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1 /*===-- clang-c/Index.h - Indexing Public C Interface -------------*- C -*-===*\
2 |*                                                                            *|
3 |*                     The LLVM Compiler Infrastructure                       *|
4 |*                                                                            *|
5 |* This file is distributed under the University of Illinois Open Source      *|
6 |* License. See LICENSE.TXT for details.                                      *|
7 |*                                                                            *|
8 |*===----------------------------------------------------------------------===*|
9 |*                                                                            *|
10 |* This header provides a public inferface to a Clang library for extracting  *|
11 |* high-level symbol information from source files without exposing the full  *|
12 |* Clang C++ API.                                                             *|
13 |*                                                                            *|
14 \*===----------------------------------------------------------------------===*/
15 
16 #ifndef LLVM_CLANG_C_INDEX_H
17 #define LLVM_CLANG_C_INDEX_H
18 
19 #include <time.h>
20 
21 #include "clang-c/Platform.h"
22 #include "clang-c/CXErrorCode.h"
23 #include "clang-c/CXString.h"
24 #include "clang-c/BuildSystem.h"
25 
26 /**
27  * \brief The version constants for the libclang API.
28  * CINDEX_VERSION_MINOR should increase when there are API additions.
29  * CINDEX_VERSION_MAJOR is intended for "major" source/ABI breaking changes.
30  *
31  * The policy about the libclang API was always to keep it source and ABI
32  * compatible, thus CINDEX_VERSION_MAJOR is expected to remain stable.
33  */
34 #define CINDEX_VERSION_MAJOR 0
35 #define CINDEX_VERSION_MINOR 35
36 
37 #define CINDEX_VERSION_ENCODE(major, minor) ( \
38       ((major) * 10000)                       \
39     + ((minor) *     1))
40 
41 #define CINDEX_VERSION CINDEX_VERSION_ENCODE( \
42     CINDEX_VERSION_MAJOR,                     \
43     CINDEX_VERSION_MINOR )
44 
45 #define CINDEX_VERSION_STRINGIZE_(major, minor)   \
46     #major"."#minor
47 #define CINDEX_VERSION_STRINGIZE(major, minor)    \
48     CINDEX_VERSION_STRINGIZE_(major, minor)
49 
50 #define CINDEX_VERSION_STRING CINDEX_VERSION_STRINGIZE( \
51     CINDEX_VERSION_MAJOR,                               \
52     CINDEX_VERSION_MINOR)
53 
54 #ifdef __cplusplus
55 extern "C" {
56 #endif
57 
58 /** \defgroup CINDEX libclang: C Interface to Clang
59  *
60  * The C Interface to Clang provides a relatively small API that exposes
61  * facilities for parsing source code into an abstract syntax tree (AST),
62  * loading already-parsed ASTs, traversing the AST, associating
63  * physical source locations with elements within the AST, and other
64  * facilities that support Clang-based development tools.
65  *
66  * This C interface to Clang will never provide all of the information
67  * representation stored in Clang's C++ AST, nor should it: the intent is to
68  * maintain an API that is relatively stable from one release to the next,
69  * providing only the basic functionality needed to support development tools.
70  *
71  * To avoid namespace pollution, data types are prefixed with "CX" and
72  * functions are prefixed with "clang_".
73  *
74  * @{
75  */
76 
77 /**
78  * \brief An "index" that consists of a set of translation units that would
79  * typically be linked together into an executable or library.
80  */
81 typedef void *CXIndex;
82 
83 /**
84  * \brief A single translation unit, which resides in an index.
85  */
86 typedef struct CXTranslationUnitImpl *CXTranslationUnit;
87 
88 /**
89  * \brief Opaque pointer representing client data that will be passed through
90  * to various callbacks and visitors.
91  */
92 typedef void *CXClientData;
93 
94 /**
95  * \brief Provides the contents of a file that has not yet been saved to disk.
96  *
97  * Each CXUnsavedFile instance provides the name of a file on the
98  * system along with the current contents of that file that have not
99  * yet been saved to disk.
100  */
101 struct CXUnsavedFile {
102   /**
103    * \brief The file whose contents have not yet been saved.
104    *
105    * This file must already exist in the file system.
106    */
107   const char *Filename;
108 
109   /**
110    * \brief A buffer containing the unsaved contents of this file.
111    */
112   const char *Contents;
113 
114   /**
115    * \brief The length of the unsaved contents of this buffer.
116    */
117   unsigned long Length;
118 };
119 
120 /**
121  * \brief Describes the availability of a particular entity, which indicates
122  * whether the use of this entity will result in a warning or error due to
123  * it being deprecated or unavailable.
124  */
125 enum CXAvailabilityKind {
126   /**
127    * \brief The entity is available.
128    */
129   CXAvailability_Available,
130   /**
131    * \brief The entity is available, but has been deprecated (and its use is
132    * not recommended).
133    */
134   CXAvailability_Deprecated,
135   /**
136    * \brief The entity is not available; any use of it will be an error.
137    */
138   CXAvailability_NotAvailable,
139   /**
140    * \brief The entity is available, but not accessible; any use of it will be
141    * an error.
142    */
143   CXAvailability_NotAccessible
144 };
145 
146 /**
147  * \brief Describes a version number of the form major.minor.subminor.
148  */
149 typedef struct CXVersion {
150   /**
151    * \brief The major version number, e.g., the '10' in '10.7.3'. A negative
152    * value indicates that there is no version number at all.
153    */
154   int Major;
155   /**
156    * \brief The minor version number, e.g., the '7' in '10.7.3'. This value
157    * will be negative if no minor version number was provided, e.g., for
158    * version '10'.
159    */
160   int Minor;
161   /**
162    * \brief The subminor version number, e.g., the '3' in '10.7.3'. This value
163    * will be negative if no minor or subminor version number was provided,
164    * e.g., in version '10' or '10.7'.
165    */
166   int Subminor;
167 } CXVersion;
168 
169 /**
170  * \brief Provides a shared context for creating translation units.
171  *
172  * It provides two options:
173  *
174  * - excludeDeclarationsFromPCH: When non-zero, allows enumeration of "local"
175  * declarations (when loading any new translation units). A "local" declaration
176  * is one that belongs in the translation unit itself and not in a precompiled
177  * header that was used by the translation unit. If zero, all declarations
178  * will be enumerated.
179  *
180  * Here is an example:
181  *
182  * \code
183  *   // excludeDeclsFromPCH = 1, displayDiagnostics=1
184  *   Idx = clang_createIndex(1, 1);
185  *
186  *   // IndexTest.pch was produced with the following command:
187  *   // "clang -x c IndexTest.h -emit-ast -o IndexTest.pch"
188  *   TU = clang_createTranslationUnit(Idx, "IndexTest.pch");
189  *
190  *   // This will load all the symbols from 'IndexTest.pch'
191  *   clang_visitChildren(clang_getTranslationUnitCursor(TU),
192  *                       TranslationUnitVisitor, 0);
193  *   clang_disposeTranslationUnit(TU);
194  *
195  *   // This will load all the symbols from 'IndexTest.c', excluding symbols
196  *   // from 'IndexTest.pch'.
197  *   char *args[] = { "-Xclang", "-include-pch=IndexTest.pch" };
198  *   TU = clang_createTranslationUnitFromSourceFile(Idx, "IndexTest.c", 2, args,
199  *                                                  0, 0);
200  *   clang_visitChildren(clang_getTranslationUnitCursor(TU),
201  *                       TranslationUnitVisitor, 0);
202  *   clang_disposeTranslationUnit(TU);
203  * \endcode
204  *
205  * This process of creating the 'pch', loading it separately, and using it (via
206  * -include-pch) allows 'excludeDeclsFromPCH' to remove redundant callbacks
207  * (which gives the indexer the same performance benefit as the compiler).
208  */
209 CINDEX_LINKAGE CXIndex clang_createIndex(int excludeDeclarationsFromPCH,
210                                          int displayDiagnostics);
211 
212 /**
213  * \brief Destroy the given index.
214  *
215  * The index must not be destroyed until all of the translation units created
216  * within that index have been destroyed.
217  */
218 CINDEX_LINKAGE void clang_disposeIndex(CXIndex index);
219 
220 typedef enum {
221   /**
222    * \brief Used to indicate that no special CXIndex options are needed.
223    */
224   CXGlobalOpt_None = 0x0,
225 
226   /**
227    * \brief Used to indicate that threads that libclang creates for indexing
228    * purposes should use background priority.
229    *
230    * Affects #clang_indexSourceFile, #clang_indexTranslationUnit,
231    * #clang_parseTranslationUnit, #clang_saveTranslationUnit.
232    */
233   CXGlobalOpt_ThreadBackgroundPriorityForIndexing = 0x1,
234 
235   /**
236    * \brief Used to indicate that threads that libclang creates for editing
237    * purposes should use background priority.
238    *
239    * Affects #clang_reparseTranslationUnit, #clang_codeCompleteAt,
240    * #clang_annotateTokens
241    */
242   CXGlobalOpt_ThreadBackgroundPriorityForEditing = 0x2,
243 
244   /**
245    * \brief Used to indicate that all threads that libclang creates should use
246    * background priority.
247    */
248   CXGlobalOpt_ThreadBackgroundPriorityForAll =
249       CXGlobalOpt_ThreadBackgroundPriorityForIndexing |
250       CXGlobalOpt_ThreadBackgroundPriorityForEditing
251 
252 } CXGlobalOptFlags;
253 
254 /**
255  * \brief Sets general options associated with a CXIndex.
256  *
257  * For example:
258  * \code
259  * CXIndex idx = ...;
260  * clang_CXIndex_setGlobalOptions(idx,
261  *     clang_CXIndex_getGlobalOptions(idx) |
262  *     CXGlobalOpt_ThreadBackgroundPriorityForIndexing);
263  * \endcode
264  *
265  * \param options A bitmask of options, a bitwise OR of CXGlobalOpt_XXX flags.
266  */
267 CINDEX_LINKAGE void clang_CXIndex_setGlobalOptions(CXIndex, unsigned options);
268 
269 /**
270  * \brief Gets the general options associated with a CXIndex.
271  *
272  * \returns A bitmask of options, a bitwise OR of CXGlobalOpt_XXX flags that
273  * are associated with the given CXIndex object.
274  */
275 CINDEX_LINKAGE unsigned clang_CXIndex_getGlobalOptions(CXIndex);
276 
277 /**
278  * \defgroup CINDEX_FILES File manipulation routines
279  *
280  * @{
281  */
282 
283 /**
284  * \brief A particular source file that is part of a translation unit.
285  */
286 typedef void *CXFile;
287 
288 /**
289  * \brief Retrieve the complete file and path name of the given file.
290  */
291 CINDEX_LINKAGE CXString clang_getFileName(CXFile SFile);
292 
293 /**
294  * \brief Retrieve the last modification time of the given file.
295  */
296 CINDEX_LINKAGE time_t clang_getFileTime(CXFile SFile);
297 
298 /**
299  * \brief Uniquely identifies a CXFile, that refers to the same underlying file,
300  * across an indexing session.
301  */
302 typedef struct {
303   unsigned long long data[3];
304 } CXFileUniqueID;
305 
306 /**
307  * \brief Retrieve the unique ID for the given \c file.
308  *
309  * \param file the file to get the ID for.
310  * \param outID stores the returned CXFileUniqueID.
311  * \returns If there was a failure getting the unique ID, returns non-zero,
312  * otherwise returns 0.
313 */
314 CINDEX_LINKAGE int clang_getFileUniqueID(CXFile file, CXFileUniqueID *outID);
315 
316 /**
317  * \brief Determine whether the given header is guarded against
318  * multiple inclusions, either with the conventional
319  * \#ifndef/\#define/\#endif macro guards or with \#pragma once.
320  */
321 CINDEX_LINKAGE unsigned
322 clang_isFileMultipleIncludeGuarded(CXTranslationUnit tu, CXFile file);
323 
324 /**
325  * \brief Retrieve a file handle within the given translation unit.
326  *
327  * \param tu the translation unit
328  *
329 * \param file_name the name of the file.
330  *
331  * \returns the file handle for the named file in the translation unit \p tu,
332  * or a NULL file handle if the file was not a part of this translation unit.
333  */
334 CINDEX_LINKAGE CXFile clang_getFile(CXTranslationUnit tu,
335                                     const char *file_name);
336 
337 /**
338  * \brief Returns non-zero if the \c file1 and \c file2 point to the same file,
339  * or they are both NULL.
340  */
341 CINDEX_LINKAGE int clang_File_isEqual(CXFile file1, CXFile file2);
342 
343 /**
344  * @}
345  */
346 
347 /**
348  * \defgroup CINDEX_LOCATIONS Physical source locations
349  *
350  * Clang represents physical source locations in its abstract syntax tree in
351  * great detail, with file, line, and column information for the majority of
352  * the tokens parsed in the source code. These data types and functions are
353  * used to represent source location information, either for a particular
354  * point in the program or for a range of points in the program, and extract
355  * specific location information from those data types.
356  *
357  * @{
358  */
359 
360 /**
361  * \brief Identifies a specific source location within a translation
362  * unit.
363  *
364  * Use clang_getExpansionLocation() or clang_getSpellingLocation()
365  * to map a source location to a particular file, line, and column.
366  */
367 typedef struct {
368   const void *ptr_data[2];
369   unsigned int_data;
370 } CXSourceLocation;
371 
372 /**
373  * \brief Identifies a half-open character range in the source code.
374  *
375  * Use clang_getRangeStart() and clang_getRangeEnd() to retrieve the
376  * starting and end locations from a source range, respectively.
377  */
378 typedef struct {
379   const void *ptr_data[2];
380   unsigned begin_int_data;
381   unsigned end_int_data;
382 } CXSourceRange;
383 
384 /**
385  * \brief Retrieve a NULL (invalid) source location.
386  */
387 CINDEX_LINKAGE CXSourceLocation clang_getNullLocation(void);
388 
389 /**
390  * \brief Determine whether two source locations, which must refer into
391  * the same translation unit, refer to exactly the same point in the source
392  * code.
393  *
394  * \returns non-zero if the source locations refer to the same location, zero
395  * if they refer to different locations.
396  */
397 CINDEX_LINKAGE unsigned clang_equalLocations(CXSourceLocation loc1,
398                                              CXSourceLocation loc2);
399 
400 /**
401  * \brief Retrieves the source location associated with a given file/line/column
402  * in a particular translation unit.
403  */
404 CINDEX_LINKAGE CXSourceLocation clang_getLocation(CXTranslationUnit tu,
405                                                   CXFile file,
406                                                   unsigned line,
407                                                   unsigned column);
408 /**
409  * \brief Retrieves the source location associated with a given character offset
410  * in a particular translation unit.
411  */
412 CINDEX_LINKAGE CXSourceLocation clang_getLocationForOffset(CXTranslationUnit tu,
413                                                            CXFile file,
414                                                            unsigned offset);
415 
416 /**
417  * \brief Returns non-zero if the given source location is in a system header.
418  */
419 CINDEX_LINKAGE int clang_Location_isInSystemHeader(CXSourceLocation location);
420 
421 /**
422  * \brief Returns non-zero if the given source location is in the main file of
423  * the corresponding translation unit.
424  */
425 CINDEX_LINKAGE int clang_Location_isFromMainFile(CXSourceLocation location);
426 
427 /**
428  * \brief Retrieve a NULL (invalid) source range.
429  */
430 CINDEX_LINKAGE CXSourceRange clang_getNullRange(void);
431 
432 /**
433  * \brief Retrieve a source range given the beginning and ending source
434  * locations.
435  */
436 CINDEX_LINKAGE CXSourceRange clang_getRange(CXSourceLocation begin,
437                                             CXSourceLocation end);
438 
439 /**
440  * \brief Determine whether two ranges are equivalent.
441  *
442  * \returns non-zero if the ranges are the same, zero if they differ.
443  */
444 CINDEX_LINKAGE unsigned clang_equalRanges(CXSourceRange range1,
445                                           CXSourceRange range2);
446 
447 /**
448  * \brief Returns non-zero if \p range is null.
449  */
450 CINDEX_LINKAGE int clang_Range_isNull(CXSourceRange range);
451 
452 /**
453  * \brief Retrieve the file, line, column, and offset represented by
454  * the given source location.
455  *
456  * If the location refers into a macro expansion, retrieves the
457  * location of the macro expansion.
458  *
459  * \param location the location within a source file that will be decomposed
460  * into its parts.
461  *
462  * \param file [out] if non-NULL, will be set to the file to which the given
463  * source location points.
464  *
465  * \param line [out] if non-NULL, will be set to the line to which the given
466  * source location points.
467  *
468  * \param column [out] if non-NULL, will be set to the column to which the given
469  * source location points.
470  *
471  * \param offset [out] if non-NULL, will be set to the offset into the
472  * buffer to which the given source location points.
473  */
474 CINDEX_LINKAGE void clang_getExpansionLocation(CXSourceLocation location,
475                                                CXFile *file,
476                                                unsigned *line,
477                                                unsigned *column,
478                                                unsigned *offset);
479 
480 /**
481  * \brief Retrieve the file, line, column, and offset represented by
482  * the given source location, as specified in a # line directive.
483  *
484  * Example: given the following source code in a file somefile.c
485  *
486  * \code
487  * #123 "dummy.c" 1
488  *
489  * static int func(void)
490  * {
491  *     return 0;
492  * }
493  * \endcode
494  *
495  * the location information returned by this function would be
496  *
497  * File: dummy.c Line: 124 Column: 12
498  *
499  * whereas clang_getExpansionLocation would have returned
500  *
501  * File: somefile.c Line: 3 Column: 12
502  *
503  * \param location the location within a source file that will be decomposed
504  * into its parts.
505  *
506  * \param filename [out] if non-NULL, will be set to the filename of the
507  * source location. Note that filenames returned will be for "virtual" files,
508  * which don't necessarily exist on the machine running clang - e.g. when
509  * parsing preprocessed output obtained from a different environment. If
510  * a non-NULL value is passed in, remember to dispose of the returned value
511  * using \c clang_disposeString() once you've finished with it. For an invalid
512  * source location, an empty string is returned.
513  *
514  * \param line [out] if non-NULL, will be set to the line number of the
515  * source location. For an invalid source location, zero is returned.
516  *
517  * \param column [out] if non-NULL, will be set to the column number of the
518  * source location. For an invalid source location, zero is returned.
519  */
520 CINDEX_LINKAGE void clang_getPresumedLocation(CXSourceLocation location,
521                                               CXString *filename,
522                                               unsigned *line,
523                                               unsigned *column);
524 
525 /**
526  * \brief Legacy API to retrieve the file, line, column, and offset represented
527  * by the given source location.
528  *
529  * This interface has been replaced by the newer interface
530  * #clang_getExpansionLocation(). See that interface's documentation for
531  * details.
532  */
533 CINDEX_LINKAGE void clang_getInstantiationLocation(CXSourceLocation location,
534                                                    CXFile *file,
535                                                    unsigned *line,
536                                                    unsigned *column,
537                                                    unsigned *offset);
538 
539 /**
540  * \brief Retrieve the file, line, column, and offset represented by
541  * the given source location.
542  *
543  * If the location refers into a macro instantiation, return where the
544  * location was originally spelled in the source file.
545  *
546  * \param location the location within a source file that will be decomposed
547  * into its parts.
548  *
549  * \param file [out] if non-NULL, will be set to the file to which the given
550  * source location points.
551  *
552  * \param line [out] if non-NULL, will be set to the line to which the given
553  * source location points.
554  *
555  * \param column [out] if non-NULL, will be set to the column to which the given
556  * source location points.
557  *
558  * \param offset [out] if non-NULL, will be set to the offset into the
559  * buffer to which the given source location points.
560  */
561 CINDEX_LINKAGE void clang_getSpellingLocation(CXSourceLocation location,
562                                               CXFile *file,
563                                               unsigned *line,
564                                               unsigned *column,
565                                               unsigned *offset);
566 
567 /**
568  * \brief Retrieve the file, line, column, and offset represented by
569  * the given source location.
570  *
571  * If the location refers into a macro expansion, return where the macro was
572  * expanded or where the macro argument was written, if the location points at
573  * a macro argument.
574  *
575  * \param location the location within a source file that will be decomposed
576  * into its parts.
577  *
578  * \param file [out] if non-NULL, will be set to the file to which the given
579  * source location points.
580  *
581  * \param line [out] if non-NULL, will be set to the line to which the given
582  * source location points.
583  *
584  * \param column [out] if non-NULL, will be set to the column to which the given
585  * source location points.
586  *
587  * \param offset [out] if non-NULL, will be set to the offset into the
588  * buffer to which the given source location points.
589  */
590 CINDEX_LINKAGE void clang_getFileLocation(CXSourceLocation location,
591                                           CXFile *file,
592                                           unsigned *line,
593                                           unsigned *column,
594                                           unsigned *offset);
595 
596 /**
597  * \brief Retrieve a source location representing the first character within a
598  * source range.
599  */
600 CINDEX_LINKAGE CXSourceLocation clang_getRangeStart(CXSourceRange range);
601 
602 /**
603  * \brief Retrieve a source location representing the last character within a
604  * source range.
605  */
606 CINDEX_LINKAGE CXSourceLocation clang_getRangeEnd(CXSourceRange range);
607 
608 /**
609  * \brief Identifies an array of ranges.
610  */
611 typedef struct {
612   /** \brief The number of ranges in the \c ranges array. */
613   unsigned count;
614   /**
615    * \brief An array of \c CXSourceRanges.
616    */
617   CXSourceRange *ranges;
618 } CXSourceRangeList;
619 
620 /**
621  * \brief Retrieve all ranges that were skipped by the preprocessor.
622  *
623  * The preprocessor will skip lines when they are surrounded by an
624  * if/ifdef/ifndef directive whose condition does not evaluate to true.
625  */
626 CINDEX_LINKAGE CXSourceRangeList *clang_getSkippedRanges(CXTranslationUnit tu,
627                                                          CXFile file);
628 
629 /**
630  * \brief Destroy the given \c CXSourceRangeList.
631  */
632 CINDEX_LINKAGE void clang_disposeSourceRangeList(CXSourceRangeList *ranges);
633 
634 /**
635  * @}
636  */
637 
638 /**
639  * \defgroup CINDEX_DIAG Diagnostic reporting
640  *
641  * @{
642  */
643 
644 /**
645  * \brief Describes the severity of a particular diagnostic.
646  */
647 enum CXDiagnosticSeverity {
648   /**
649    * \brief A diagnostic that has been suppressed, e.g., by a command-line
650    * option.
651    */
652   CXDiagnostic_Ignored = 0,
653 
654   /**
655    * \brief This diagnostic is a note that should be attached to the
656    * previous (non-note) diagnostic.
657    */
658   CXDiagnostic_Note    = 1,
659 
660   /**
661    * \brief This diagnostic indicates suspicious code that may not be
662    * wrong.
663    */
664   CXDiagnostic_Warning = 2,
665 
666   /**
667    * \brief This diagnostic indicates that the code is ill-formed.
668    */
669   CXDiagnostic_Error   = 3,
670 
671   /**
672    * \brief This diagnostic indicates that the code is ill-formed such
673    * that future parser recovery is unlikely to produce useful
674    * results.
675    */
676   CXDiagnostic_Fatal   = 4
677 };
678 
679 /**
680  * \brief A single diagnostic, containing the diagnostic's severity,
681  * location, text, source ranges, and fix-it hints.
682  */
683 typedef void *CXDiagnostic;
684 
685 /**
686  * \brief A group of CXDiagnostics.
687  */
688 typedef void *CXDiagnosticSet;
689 
690 /**
691  * \brief Determine the number of diagnostics in a CXDiagnosticSet.
692  */
693 CINDEX_LINKAGE unsigned clang_getNumDiagnosticsInSet(CXDiagnosticSet Diags);
694 
695 /**
696  * \brief Retrieve a diagnostic associated with the given CXDiagnosticSet.
697  *
698  * \param Diags the CXDiagnosticSet to query.
699  * \param Index the zero-based diagnostic number to retrieve.
700  *
701  * \returns the requested diagnostic. This diagnostic must be freed
702  * via a call to \c clang_disposeDiagnostic().
703  */
704 CINDEX_LINKAGE CXDiagnostic clang_getDiagnosticInSet(CXDiagnosticSet Diags,
705                                                      unsigned Index);
706 
707 /**
708  * \brief Describes the kind of error that occurred (if any) in a call to
709  * \c clang_loadDiagnostics.
710  */
711 enum CXLoadDiag_Error {
712   /**
713    * \brief Indicates that no error occurred.
714    */
715   CXLoadDiag_None = 0,
716 
717   /**
718    * \brief Indicates that an unknown error occurred while attempting to
719    * deserialize diagnostics.
720    */
721   CXLoadDiag_Unknown = 1,
722 
723   /**
724    * \brief Indicates that the file containing the serialized diagnostics
725    * could not be opened.
726    */
727   CXLoadDiag_CannotLoad = 2,
728 
729   /**
730    * \brief Indicates that the serialized diagnostics file is invalid or
731    * corrupt.
732    */
733   CXLoadDiag_InvalidFile = 3
734 };
735 
736 /**
737  * \brief Deserialize a set of diagnostics from a Clang diagnostics bitcode
738  * file.
739  *
740  * \param file The name of the file to deserialize.
741  * \param error A pointer to a enum value recording if there was a problem
742  *        deserializing the diagnostics.
743  * \param errorString A pointer to a CXString for recording the error string
744  *        if the file was not successfully loaded.
745  *
746  * \returns A loaded CXDiagnosticSet if successful, and NULL otherwise.  These
747  * diagnostics should be released using clang_disposeDiagnosticSet().
748  */
749 CINDEX_LINKAGE CXDiagnosticSet clang_loadDiagnostics(const char *file,
750                                                   enum CXLoadDiag_Error *error,
751                                                   CXString *errorString);
752 
753 /**
754  * \brief Release a CXDiagnosticSet and all of its contained diagnostics.
755  */
756 CINDEX_LINKAGE void clang_disposeDiagnosticSet(CXDiagnosticSet Diags);
757 
758 /**
759  * \brief Retrieve the child diagnostics of a CXDiagnostic.
760  *
761  * This CXDiagnosticSet does not need to be released by
762  * clang_disposeDiagnosticSet.
763  */
764 CINDEX_LINKAGE CXDiagnosticSet clang_getChildDiagnostics(CXDiagnostic D);
765 
766 /**
767  * \brief Determine the number of diagnostics produced for the given
768  * translation unit.
769  */
770 CINDEX_LINKAGE unsigned clang_getNumDiagnostics(CXTranslationUnit Unit);
771 
772 /**
773  * \brief Retrieve a diagnostic associated with the given translation unit.
774  *
775  * \param Unit the translation unit to query.
776  * \param Index the zero-based diagnostic number to retrieve.
777  *
778  * \returns the requested diagnostic. This diagnostic must be freed
779  * via a call to \c clang_disposeDiagnostic().
780  */
781 CINDEX_LINKAGE CXDiagnostic clang_getDiagnostic(CXTranslationUnit Unit,
782                                                 unsigned Index);
783 
784 /**
785  * \brief Retrieve the complete set of diagnostics associated with a
786  *        translation unit.
787  *
788  * \param Unit the translation unit to query.
789  */
790 CINDEX_LINKAGE CXDiagnosticSet
791   clang_getDiagnosticSetFromTU(CXTranslationUnit Unit);
792 
793 /**
794  * \brief Destroy a diagnostic.
795  */
796 CINDEX_LINKAGE void clang_disposeDiagnostic(CXDiagnostic Diagnostic);
797 
798 /**
799  * \brief Options to control the display of diagnostics.
800  *
801  * The values in this enum are meant to be combined to customize the
802  * behavior of \c clang_formatDiagnostic().
803  */
804 enum CXDiagnosticDisplayOptions {
805   /**
806    * \brief Display the source-location information where the
807    * diagnostic was located.
808    *
809    * When set, diagnostics will be prefixed by the file, line, and
810    * (optionally) column to which the diagnostic refers. For example,
811    *
812    * \code
813    * test.c:28: warning: extra tokens at end of #endif directive
814    * \endcode
815    *
816    * This option corresponds to the clang flag \c -fshow-source-location.
817    */
818   CXDiagnostic_DisplaySourceLocation = 0x01,
819 
820   /**
821    * \brief If displaying the source-location information of the
822    * diagnostic, also include the column number.
823    *
824    * This option corresponds to the clang flag \c -fshow-column.
825    */
826   CXDiagnostic_DisplayColumn = 0x02,
827 
828   /**
829    * \brief If displaying the source-location information of the
830    * diagnostic, also include information about source ranges in a
831    * machine-parsable format.
832    *
833    * This option corresponds to the clang flag
834    * \c -fdiagnostics-print-source-range-info.
835    */
836   CXDiagnostic_DisplaySourceRanges = 0x04,
837 
838   /**
839    * \brief Display the option name associated with this diagnostic, if any.
840    *
841    * The option name displayed (e.g., -Wconversion) will be placed in brackets
842    * after the diagnostic text. This option corresponds to the clang flag
843    * \c -fdiagnostics-show-option.
844    */
845   CXDiagnostic_DisplayOption = 0x08,
846 
847   /**
848    * \brief Display the category number associated with this diagnostic, if any.
849    *
850    * The category number is displayed within brackets after the diagnostic text.
851    * This option corresponds to the clang flag
852    * \c -fdiagnostics-show-category=id.
853    */
854   CXDiagnostic_DisplayCategoryId = 0x10,
855 
856   /**
857    * \brief Display the category name associated with this diagnostic, if any.
858    *
859    * The category name is displayed within brackets after the diagnostic text.
860    * This option corresponds to the clang flag
861    * \c -fdiagnostics-show-category=name.
862    */
863   CXDiagnostic_DisplayCategoryName = 0x20
864 };
865 
866 /**
867  * \brief Format the given diagnostic in a manner that is suitable for display.
868  *
869  * This routine will format the given diagnostic to a string, rendering
870  * the diagnostic according to the various options given. The
871  * \c clang_defaultDiagnosticDisplayOptions() function returns the set of
872  * options that most closely mimics the behavior of the clang compiler.
873  *
874  * \param Diagnostic The diagnostic to print.
875  *
876  * \param Options A set of options that control the diagnostic display,
877  * created by combining \c CXDiagnosticDisplayOptions values.
878  *
879  * \returns A new string containing for formatted diagnostic.
880  */
881 CINDEX_LINKAGE CXString clang_formatDiagnostic(CXDiagnostic Diagnostic,
882                                                unsigned Options);
883 
884 /**
885  * \brief Retrieve the set of display options most similar to the
886  * default behavior of the clang compiler.
887  *
888  * \returns A set of display options suitable for use with \c
889  * clang_formatDiagnostic().
890  */
891 CINDEX_LINKAGE unsigned clang_defaultDiagnosticDisplayOptions(void);
892 
893 /**
894  * \brief Determine the severity of the given diagnostic.
895  */
896 CINDEX_LINKAGE enum CXDiagnosticSeverity
897 clang_getDiagnosticSeverity(CXDiagnostic);
898 
899 /**
900  * \brief Retrieve the source location of the given diagnostic.
901  *
902  * This location is where Clang would print the caret ('^') when
903  * displaying the diagnostic on the command line.
904  */
905 CINDEX_LINKAGE CXSourceLocation clang_getDiagnosticLocation(CXDiagnostic);
906 
907 /**
908  * \brief Retrieve the text of the given diagnostic.
909  */
910 CINDEX_LINKAGE CXString clang_getDiagnosticSpelling(CXDiagnostic);
911 
912 /**
913  * \brief Retrieve the name of the command-line option that enabled this
914  * diagnostic.
915  *
916  * \param Diag The diagnostic to be queried.
917  *
918  * \param Disable If non-NULL, will be set to the option that disables this
919  * diagnostic (if any).
920  *
921  * \returns A string that contains the command-line option used to enable this
922  * warning, such as "-Wconversion" or "-pedantic".
923  */
924 CINDEX_LINKAGE CXString clang_getDiagnosticOption(CXDiagnostic Diag,
925                                                   CXString *Disable);
926 
927 /**
928  * \brief Retrieve the category number for this diagnostic.
929  *
930  * Diagnostics can be categorized into groups along with other, related
931  * diagnostics (e.g., diagnostics under the same warning flag). This routine
932  * retrieves the category number for the given diagnostic.
933  *
934  * \returns The number of the category that contains this diagnostic, or zero
935  * if this diagnostic is uncategorized.
936  */
937 CINDEX_LINKAGE unsigned clang_getDiagnosticCategory(CXDiagnostic);
938 
939 /**
940  * \brief Retrieve the name of a particular diagnostic category.  This
941  *  is now deprecated.  Use clang_getDiagnosticCategoryText()
942  *  instead.
943  *
944  * \param Category A diagnostic category number, as returned by
945  * \c clang_getDiagnosticCategory().
946  *
947  * \returns The name of the given diagnostic category.
948  */
949 CINDEX_DEPRECATED CINDEX_LINKAGE
950 CXString clang_getDiagnosticCategoryName(unsigned Category);
951 
952 /**
953  * \brief Retrieve the diagnostic category text for a given diagnostic.
954  *
955  * \returns The text of the given diagnostic category.
956  */
957 CINDEX_LINKAGE CXString clang_getDiagnosticCategoryText(CXDiagnostic);
958 
959 /**
960  * \brief Determine the number of source ranges associated with the given
961  * diagnostic.
962  */
963 CINDEX_LINKAGE unsigned clang_getDiagnosticNumRanges(CXDiagnostic);
964 
965 /**
966  * \brief Retrieve a source range associated with the diagnostic.
967  *
968  * A diagnostic's source ranges highlight important elements in the source
969  * code. On the command line, Clang displays source ranges by
970  * underlining them with '~' characters.
971  *
972  * \param Diagnostic the diagnostic whose range is being extracted.
973  *
974  * \param Range the zero-based index specifying which range to
975  *
976  * \returns the requested source range.
977  */
978 CINDEX_LINKAGE CXSourceRange clang_getDiagnosticRange(CXDiagnostic Diagnostic,
979                                                       unsigned Range);
980 
981 /**
982  * \brief Determine the number of fix-it hints associated with the
983  * given diagnostic.
984  */
985 CINDEX_LINKAGE unsigned clang_getDiagnosticNumFixIts(CXDiagnostic Diagnostic);
986 
987 /**
988  * \brief Retrieve the replacement information for a given fix-it.
989  *
990  * Fix-its are described in terms of a source range whose contents
991  * should be replaced by a string. This approach generalizes over
992  * three kinds of operations: removal of source code (the range covers
993  * the code to be removed and the replacement string is empty),
994  * replacement of source code (the range covers the code to be
995  * replaced and the replacement string provides the new code), and
996  * insertion (both the start and end of the range point at the
997  * insertion location, and the replacement string provides the text to
998  * insert).
999  *
1000  * \param Diagnostic The diagnostic whose fix-its are being queried.
1001  *
1002  * \param FixIt The zero-based index of the fix-it.
1003  *
1004  * \param ReplacementRange The source range whose contents will be
1005  * replaced with the returned replacement string. Note that source
1006  * ranges are half-open ranges [a, b), so the source code should be
1007  * replaced from a and up to (but not including) b.
1008  *
1009  * \returns A string containing text that should be replace the source
1010  * code indicated by the \c ReplacementRange.
1011  */
1012 CINDEX_LINKAGE CXString clang_getDiagnosticFixIt(CXDiagnostic Diagnostic,
1013                                                  unsigned FixIt,
1014                                                CXSourceRange *ReplacementRange);
1015 
1016 /**
1017  * @}
1018  */
1019 
1020 /**
1021  * \defgroup CINDEX_TRANSLATION_UNIT Translation unit manipulation
1022  *
1023  * The routines in this group provide the ability to create and destroy
1024  * translation units from files, either by parsing the contents of the files or
1025  * by reading in a serialized representation of a translation unit.
1026  *
1027  * @{
1028  */
1029 
1030 /**
1031  * \brief Get the original translation unit source file name.
1032  */
1033 CINDEX_LINKAGE CXString
1034 clang_getTranslationUnitSpelling(CXTranslationUnit CTUnit);
1035 
1036 /**
1037  * \brief Return the CXTranslationUnit for a given source file and the provided
1038  * command line arguments one would pass to the compiler.
1039  *
1040  * Note: The 'source_filename' argument is optional.  If the caller provides a
1041  * NULL pointer, the name of the source file is expected to reside in the
1042  * specified command line arguments.
1043  *
1044  * Note: When encountered in 'clang_command_line_args', the following options
1045  * are ignored:
1046  *
1047  *   '-c'
1048  *   '-emit-ast'
1049  *   '-fsyntax-only'
1050  *   '-o \<output file>'  (both '-o' and '\<output file>' are ignored)
1051  *
1052  * \param CIdx The index object with which the translation unit will be
1053  * associated.
1054  *
1055  * \param source_filename The name of the source file to load, or NULL if the
1056  * source file is included in \p clang_command_line_args.
1057  *
1058  * \param num_clang_command_line_args The number of command-line arguments in
1059  * \p clang_command_line_args.
1060  *
1061  * \param clang_command_line_args The command-line arguments that would be
1062  * passed to the \c clang executable if it were being invoked out-of-process.
1063  * These command-line options will be parsed and will affect how the translation
1064  * unit is parsed. Note that the following options are ignored: '-c',
1065  * '-emit-ast', '-fsyntax-only' (which is the default), and '-o \<output file>'.
1066  *
1067  * \param num_unsaved_files the number of unsaved file entries in \p
1068  * unsaved_files.
1069  *
1070  * \param unsaved_files the files that have not yet been saved to disk
1071  * but may be required for code completion, including the contents of
1072  * those files.  The contents and name of these files (as specified by
1073  * CXUnsavedFile) are copied when necessary, so the client only needs to
1074  * guarantee their validity until the call to this function returns.
1075  */
1076 CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnitFromSourceFile(
1077                                          CXIndex CIdx,
1078                                          const char *source_filename,
1079                                          int num_clang_command_line_args,
1080                                    const char * const *clang_command_line_args,
1081                                          unsigned num_unsaved_files,
1082                                          struct CXUnsavedFile *unsaved_files);
1083 
1084 /**
1085  * \brief Same as \c clang_createTranslationUnit2, but returns
1086  * the \c CXTranslationUnit instead of an error code.  In case of an error this
1087  * routine returns a \c NULL \c CXTranslationUnit, without further detailed
1088  * error codes.
1089  */
1090 CINDEX_LINKAGE CXTranslationUnit clang_createTranslationUnit(
1091     CXIndex CIdx,
1092     const char *ast_filename);
1093 
1094 /**
1095  * \brief Create a translation unit from an AST file (\c -emit-ast).
1096  *
1097  * \param[out] out_TU A non-NULL pointer to store the created
1098  * \c CXTranslationUnit.
1099  *
1100  * \returns Zero on success, otherwise returns an error code.
1101  */
1102 CINDEX_LINKAGE enum CXErrorCode clang_createTranslationUnit2(
1103     CXIndex CIdx,
1104     const char *ast_filename,
1105     CXTranslationUnit *out_TU);
1106 
1107 /**
1108  * \brief Flags that control the creation of translation units.
1109  *
1110  * The enumerators in this enumeration type are meant to be bitwise
1111  * ORed together to specify which options should be used when
1112  * constructing the translation unit.
1113  */
1114 enum CXTranslationUnit_Flags {
1115   /**
1116    * \brief Used to indicate that no special translation-unit options are
1117    * needed.
1118    */
1119   CXTranslationUnit_None = 0x0,
1120 
1121   /**
1122    * \brief Used to indicate that the parser should construct a "detailed"
1123    * preprocessing record, including all macro definitions and instantiations.
1124    *
1125    * Constructing a detailed preprocessing record requires more memory
1126    * and time to parse, since the information contained in the record
1127    * is usually not retained. However, it can be useful for
1128    * applications that require more detailed information about the
1129    * behavior of the preprocessor.
1130    */
1131   CXTranslationUnit_DetailedPreprocessingRecord = 0x01,
1132 
1133   /**
1134    * \brief Used to indicate that the translation unit is incomplete.
1135    *
1136    * When a translation unit is considered "incomplete", semantic
1137    * analysis that is typically performed at the end of the
1138    * translation unit will be suppressed. For example, this suppresses
1139    * the completion of tentative declarations in C and of
1140    * instantiation of implicitly-instantiation function templates in
1141    * C++. This option is typically used when parsing a header with the
1142    * intent of producing a precompiled header.
1143    */
1144   CXTranslationUnit_Incomplete = 0x02,
1145 
1146   /**
1147    * \brief Used to indicate that the translation unit should be built with an
1148    * implicit precompiled header for the preamble.
1149    *
1150    * An implicit precompiled header is used as an optimization when a
1151    * particular translation unit is likely to be reparsed many times
1152    * when the sources aren't changing that often. In this case, an
1153    * implicit precompiled header will be built containing all of the
1154    * initial includes at the top of the main file (what we refer to as
1155    * the "preamble" of the file). In subsequent parses, if the
1156    * preamble or the files in it have not changed, \c
1157    * clang_reparseTranslationUnit() will re-use the implicit
1158    * precompiled header to improve parsing performance.
1159    */
1160   CXTranslationUnit_PrecompiledPreamble = 0x04,
1161 
1162   /**
1163    * \brief Used to indicate that the translation unit should cache some
1164    * code-completion results with each reparse of the source file.
1165    *
1166    * Caching of code-completion results is a performance optimization that
1167    * introduces some overhead to reparsing but improves the performance of
1168    * code-completion operations.
1169    */
1170   CXTranslationUnit_CacheCompletionResults = 0x08,
1171 
1172   /**
1173    * \brief Used to indicate that the translation unit will be serialized with
1174    * \c clang_saveTranslationUnit.
1175    *
1176    * This option is typically used when parsing a header with the intent of
1177    * producing a precompiled header.
1178    */
1179   CXTranslationUnit_ForSerialization = 0x10,
1180 
1181   /**
1182    * \brief DEPRECATED: Enabled chained precompiled preambles in C++.
1183    *
1184    * Note: this is a *temporary* option that is available only while
1185    * we are testing C++ precompiled preamble support. It is deprecated.
1186    */
1187   CXTranslationUnit_CXXChainedPCH = 0x20,
1188 
1189   /**
1190    * \brief Used to indicate that function/method bodies should be skipped while
1191    * parsing.
1192    *
1193    * This option can be used to search for declarations/definitions while
1194    * ignoring the usages.
1195    */
1196   CXTranslationUnit_SkipFunctionBodies = 0x40,
1197 
1198   /**
1199    * \brief Used to indicate that brief documentation comments should be
1200    * included into the set of code completions returned from this translation
1201    * unit.
1202    */
1203   CXTranslationUnit_IncludeBriefCommentsInCodeCompletion = 0x80,
1204 
1205   /**
1206    * \brief Used to indicate that the precompiled preamble should be created on
1207    * the first parse. Otherwise it will be created on the first reparse. This
1208    * trades runtime on the first parse (serializing the preamble takes time) for
1209    * reduced runtime on the second parse (can now reuse the preamble).
1210    */
1211   CXTranslationUnit_CreatePreambleOnFirstParse = 0x100,
1212 
1213   /**
1214    * \brief Do not stop processing when fatal errors are encountered.
1215    *
1216    * When fatal errors are encountered while parsing a translation unit,
1217    * semantic analysis is typically stopped early when compiling code. A common
1218    * source for fatal errors are unresolvable include files. For the
1219    * purposes of an IDE, this is undesirable behavior and as much information
1220    * as possible should be reported. Use this flag to enable this behavior.
1221    */
1222   CXTranslationUnit_KeepGoing = 0x200
1223 };
1224 
1225 /**
1226  * \brief Returns the set of flags that is suitable for parsing a translation
1227  * unit that is being edited.
1228  *
1229  * The set of flags returned provide options for \c clang_parseTranslationUnit()
1230  * to indicate that the translation unit is likely to be reparsed many times,
1231  * either explicitly (via \c clang_reparseTranslationUnit()) or implicitly
1232  * (e.g., by code completion (\c clang_codeCompletionAt())). The returned flag
1233  * set contains an unspecified set of optimizations (e.g., the precompiled
1234  * preamble) geared toward improving the performance of these routines. The
1235  * set of optimizations enabled may change from one version to the next.
1236  */
1237 CINDEX_LINKAGE unsigned clang_defaultEditingTranslationUnitOptions(void);
1238 
1239 /**
1240  * \brief Same as \c clang_parseTranslationUnit2, but returns
1241  * the \c CXTranslationUnit instead of an error code.  In case of an error this
1242  * routine returns a \c NULL \c CXTranslationUnit, without further detailed
1243  * error codes.
1244  */
1245 CINDEX_LINKAGE CXTranslationUnit
1246 clang_parseTranslationUnit(CXIndex CIdx,
1247                            const char *source_filename,
1248                            const char *const *command_line_args,
1249                            int num_command_line_args,
1250                            struct CXUnsavedFile *unsaved_files,
1251                            unsigned num_unsaved_files,
1252                            unsigned options);
1253 
1254 /**
1255  * \brief Parse the given source file and the translation unit corresponding
1256  * to that file.
1257  *
1258  * This routine is the main entry point for the Clang C API, providing the
1259  * ability to parse a source file into a translation unit that can then be
1260  * queried by other functions in the API. This routine accepts a set of
1261  * command-line arguments so that the compilation can be configured in the same
1262  * way that the compiler is configured on the command line.
1263  *
1264  * \param CIdx The index object with which the translation unit will be
1265  * associated.
1266  *
1267  * \param source_filename The name of the source file to load, or NULL if the
1268  * source file is included in \c command_line_args.
1269  *
1270  * \param command_line_args The command-line arguments that would be
1271  * passed to the \c clang executable if it were being invoked out-of-process.
1272  * These command-line options will be parsed and will affect how the translation
1273  * unit is parsed. Note that the following options are ignored: '-c',
1274  * '-emit-ast', '-fsyntax-only' (which is the default), and '-o \<output file>'.
1275  *
1276  * \param num_command_line_args The number of command-line arguments in
1277  * \c command_line_args.
1278  *
1279  * \param unsaved_files the files that have not yet been saved to disk
1280  * but may be required for parsing, including the contents of
1281  * those files.  The contents and name of these files (as specified by
1282  * CXUnsavedFile) are copied when necessary, so the client only needs to
1283  * guarantee their validity until the call to this function returns.
1284  *
1285  * \param num_unsaved_files the number of unsaved file entries in \p
1286  * unsaved_files.
1287  *
1288  * \param options A bitmask of options that affects how the translation unit
1289  * is managed but not its compilation. This should be a bitwise OR of the
1290  * CXTranslationUnit_XXX flags.
1291  *
1292  * \param[out] out_TU A non-NULL pointer to store the created
1293  * \c CXTranslationUnit, describing the parsed code and containing any
1294  * diagnostics produced by the compiler.
1295  *
1296  * \returns Zero on success, otherwise returns an error code.
1297  */
1298 CINDEX_LINKAGE enum CXErrorCode
1299 clang_parseTranslationUnit2(CXIndex CIdx,
1300                             const char *source_filename,
1301                             const char *const *command_line_args,
1302                             int num_command_line_args,
1303                             struct CXUnsavedFile *unsaved_files,
1304                             unsigned num_unsaved_files,
1305                             unsigned options,
1306                             CXTranslationUnit *out_TU);
1307 
1308 /**
1309  * \brief Same as clang_parseTranslationUnit2 but requires a full command line
1310  * for \c command_line_args including argv[0]. This is useful if the standard
1311  * library paths are relative to the binary.
1312  */
1313 CINDEX_LINKAGE enum CXErrorCode clang_parseTranslationUnit2FullArgv(
1314     CXIndex CIdx, const char *source_filename,
1315     const char *const *command_line_args, int num_command_line_args,
1316     struct CXUnsavedFile *unsaved_files, unsigned num_unsaved_files,
1317     unsigned options, CXTranslationUnit *out_TU);
1318 
1319 /**
1320  * \brief Flags that control how translation units are saved.
1321  *
1322  * The enumerators in this enumeration type are meant to be bitwise
1323  * ORed together to specify which options should be used when
1324  * saving the translation unit.
1325  */
1326 enum CXSaveTranslationUnit_Flags {
1327   /**
1328    * \brief Used to indicate that no special saving options are needed.
1329    */
1330   CXSaveTranslationUnit_None = 0x0
1331 };
1332 
1333 /**
1334  * \brief Returns the set of flags that is suitable for saving a translation
1335  * unit.
1336  *
1337  * The set of flags returned provide options for
1338  * \c clang_saveTranslationUnit() by default. The returned flag
1339  * set contains an unspecified set of options that save translation units with
1340  * the most commonly-requested data.
1341  */
1342 CINDEX_LINKAGE unsigned clang_defaultSaveOptions(CXTranslationUnit TU);
1343 
1344 /**
1345  * \brief Describes the kind of error that occurred (if any) in a call to
1346  * \c clang_saveTranslationUnit().
1347  */
1348 enum CXSaveError {
1349   /**
1350    * \brief Indicates that no error occurred while saving a translation unit.
1351    */
1352   CXSaveError_None = 0,
1353 
1354   /**
1355    * \brief Indicates that an unknown error occurred while attempting to save
1356    * the file.
1357    *
1358    * This error typically indicates that file I/O failed when attempting to
1359    * write the file.
1360    */
1361   CXSaveError_Unknown = 1,
1362 
1363   /**
1364    * \brief Indicates that errors during translation prevented this attempt
1365    * to save the translation unit.
1366    *
1367    * Errors that prevent the translation unit from being saved can be
1368    * extracted using \c clang_getNumDiagnostics() and \c clang_getDiagnostic().
1369    */
1370   CXSaveError_TranslationErrors = 2,
1371 
1372   /**
1373    * \brief Indicates that the translation unit to be saved was somehow
1374    * invalid (e.g., NULL).
1375    */
1376   CXSaveError_InvalidTU = 3
1377 };
1378 
1379 /**
1380  * \brief Saves a translation unit into a serialized representation of
1381  * that translation unit on disk.
1382  *
1383  * Any translation unit that was parsed without error can be saved
1384  * into a file. The translation unit can then be deserialized into a
1385  * new \c CXTranslationUnit with \c clang_createTranslationUnit() or,
1386  * if it is an incomplete translation unit that corresponds to a
1387  * header, used as a precompiled header when parsing other translation
1388  * units.
1389  *
1390  * \param TU The translation unit to save.
1391  *
1392  * \param FileName The file to which the translation unit will be saved.
1393  *
1394  * \param options A bitmask of options that affects how the translation unit
1395  * is saved. This should be a bitwise OR of the
1396  * CXSaveTranslationUnit_XXX flags.
1397  *
1398  * \returns A value that will match one of the enumerators of the CXSaveError
1399  * enumeration. Zero (CXSaveError_None) indicates that the translation unit was
1400  * saved successfully, while a non-zero value indicates that a problem occurred.
1401  */
1402 CINDEX_LINKAGE int clang_saveTranslationUnit(CXTranslationUnit TU,
1403                                              const char *FileName,
1404                                              unsigned options);
1405 
1406 /**
1407  * \brief Destroy the specified CXTranslationUnit object.
1408  */
1409 CINDEX_LINKAGE void clang_disposeTranslationUnit(CXTranslationUnit);
1410 
1411 /**
1412  * \brief Flags that control the reparsing of translation units.
1413  *
1414  * The enumerators in this enumeration type are meant to be bitwise
1415  * ORed together to specify which options should be used when
1416  * reparsing the translation unit.
1417  */
1418 enum CXReparse_Flags {
1419   /**
1420    * \brief Used to indicate that no special reparsing options are needed.
1421    */
1422   CXReparse_None = 0x0
1423 };
1424 
1425 /**
1426  * \brief Returns the set of flags that is suitable for reparsing a translation
1427  * unit.
1428  *
1429  * The set of flags returned provide options for
1430  * \c clang_reparseTranslationUnit() by default. The returned flag
1431  * set contains an unspecified set of optimizations geared toward common uses
1432  * of reparsing. The set of optimizations enabled may change from one version
1433  * to the next.
1434  */
1435 CINDEX_LINKAGE unsigned clang_defaultReparseOptions(CXTranslationUnit TU);
1436 
1437 /**
1438  * \brief Reparse the source files that produced this translation unit.
1439  *
1440  * This routine can be used to re-parse the source files that originally
1441  * created the given translation unit, for example because those source files
1442  * have changed (either on disk or as passed via \p unsaved_files). The
1443  * source code will be reparsed with the same command-line options as it
1444  * was originally parsed.
1445  *
1446  * Reparsing a translation unit invalidates all cursors and source locations
1447  * that refer into that translation unit. This makes reparsing a translation
1448  * unit semantically equivalent to destroying the translation unit and then
1449  * creating a new translation unit with the same command-line arguments.
1450  * However, it may be more efficient to reparse a translation
1451  * unit using this routine.
1452  *
1453  * \param TU The translation unit whose contents will be re-parsed. The
1454  * translation unit must originally have been built with
1455  * \c clang_createTranslationUnitFromSourceFile().
1456  *
1457  * \param num_unsaved_files The number of unsaved file entries in \p
1458  * unsaved_files.
1459  *
1460  * \param unsaved_files The files that have not yet been saved to disk
1461  * but may be required for parsing, including the contents of
1462  * those files.  The contents and name of these files (as specified by
1463  * CXUnsavedFile) are copied when necessary, so the client only needs to
1464  * guarantee their validity until the call to this function returns.
1465  *
1466  * \param options A bitset of options composed of the flags in CXReparse_Flags.
1467  * The function \c clang_defaultReparseOptions() produces a default set of
1468  * options recommended for most uses, based on the translation unit.
1469  *
1470  * \returns 0 if the sources could be reparsed.  A non-zero error code will be
1471  * returned if reparsing was impossible, such that the translation unit is
1472  * invalid. In such cases, the only valid call for \c TU is
1473  * \c clang_disposeTranslationUnit(TU).  The error codes returned by this
1474  * routine are described by the \c CXErrorCode enum.
1475  */
1476 CINDEX_LINKAGE int clang_reparseTranslationUnit(CXTranslationUnit TU,
1477                                                 unsigned num_unsaved_files,
1478                                           struct CXUnsavedFile *unsaved_files,
1479                                                 unsigned options);
1480 
1481 /**
1482   * \brief Categorizes how memory is being used by a translation unit.
1483   */
1484 enum CXTUResourceUsageKind {
1485   CXTUResourceUsage_AST = 1,
1486   CXTUResourceUsage_Identifiers = 2,
1487   CXTUResourceUsage_Selectors = 3,
1488   CXTUResourceUsage_GlobalCompletionResults = 4,
1489   CXTUResourceUsage_SourceManagerContentCache = 5,
1490   CXTUResourceUsage_AST_SideTables = 6,
1491   CXTUResourceUsage_SourceManager_Membuffer_Malloc = 7,
1492   CXTUResourceUsage_SourceManager_Membuffer_MMap = 8,
1493   CXTUResourceUsage_ExternalASTSource_Membuffer_Malloc = 9,
1494   CXTUResourceUsage_ExternalASTSource_Membuffer_MMap = 10,
1495   CXTUResourceUsage_Preprocessor = 11,
1496   CXTUResourceUsage_PreprocessingRecord = 12,
1497   CXTUResourceUsage_SourceManager_DataStructures = 13,
1498   CXTUResourceUsage_Preprocessor_HeaderSearch = 14,
1499   CXTUResourceUsage_MEMORY_IN_BYTES_BEGIN = CXTUResourceUsage_AST,
1500   CXTUResourceUsage_MEMORY_IN_BYTES_END =
1501     CXTUResourceUsage_Preprocessor_HeaderSearch,
1502 
1503   CXTUResourceUsage_First = CXTUResourceUsage_AST,
1504   CXTUResourceUsage_Last = CXTUResourceUsage_Preprocessor_HeaderSearch
1505 };
1506 
1507 /**
1508   * \brief Returns the human-readable null-terminated C string that represents
1509   *  the name of the memory category.  This string should never be freed.
1510   */
1511 CINDEX_LINKAGE
1512 const char *clang_getTUResourceUsageName(enum CXTUResourceUsageKind kind);
1513 
1514 typedef struct CXTUResourceUsageEntry {
1515   /* \brief The memory usage category. */
1516   enum CXTUResourceUsageKind kind;
1517   /* \brief Amount of resources used.
1518       The units will depend on the resource kind. */
1519   unsigned long amount;
1520 } CXTUResourceUsageEntry;
1521 
1522 /**
1523   * \brief The memory usage of a CXTranslationUnit, broken into categories.
1524   */
1525 typedef struct CXTUResourceUsage {
1526   /* \brief Private data member, used for queries. */
1527   void *data;
1528 
1529   /* \brief The number of entries in the 'entries' array. */
1530   unsigned numEntries;
1531 
1532   /* \brief An array of key-value pairs, representing the breakdown of memory
1533             usage. */
1534   CXTUResourceUsageEntry *entries;
1535 
1536 } CXTUResourceUsage;
1537 
1538 /**
1539   * \brief Return the memory usage of a translation unit.  This object
1540   *  should be released with clang_disposeCXTUResourceUsage().
1541   */
1542 CINDEX_LINKAGE CXTUResourceUsage clang_getCXTUResourceUsage(CXTranslationUnit TU);
1543 
1544 CINDEX_LINKAGE void clang_disposeCXTUResourceUsage(CXTUResourceUsage usage);
1545 
1546 /**
1547  * @}
1548  */
1549 
1550 /**
1551  * \brief Describes the kind of entity that a cursor refers to.
1552  */
1553 enum CXCursorKind {
1554   /* Declarations */
1555   /**
1556    * \brief A declaration whose specific kind is not exposed via this
1557    * interface.
1558    *
1559    * Unexposed declarations have the same operations as any other kind
1560    * of declaration; one can extract their location information,
1561    * spelling, find their definitions, etc. However, the specific kind
1562    * of the declaration is not reported.
1563    */
1564   CXCursor_UnexposedDecl                 = 1,
1565   /** \brief A C or C++ struct. */
1566   CXCursor_StructDecl                    = 2,
1567   /** \brief A C or C++ union. */
1568   CXCursor_UnionDecl                     = 3,
1569   /** \brief A C++ class. */
1570   CXCursor_ClassDecl                     = 4,
1571   /** \brief An enumeration. */
1572   CXCursor_EnumDecl                      = 5,
1573   /**
1574    * \brief A field (in C) or non-static data member (in C++) in a
1575    * struct, union, or C++ class.
1576    */
1577   CXCursor_FieldDecl                     = 6,
1578   /** \brief An enumerator constant. */
1579   CXCursor_EnumConstantDecl              = 7,
1580   /** \brief A function. */
1581   CXCursor_FunctionDecl                  = 8,
1582   /** \brief A variable. */
1583   CXCursor_VarDecl                       = 9,
1584   /** \brief A function or method parameter. */
1585   CXCursor_ParmDecl                      = 10,
1586   /** \brief An Objective-C \@interface. */
1587   CXCursor_ObjCInterfaceDecl             = 11,
1588   /** \brief An Objective-C \@interface for a category. */
1589   CXCursor_ObjCCategoryDecl              = 12,
1590   /** \brief An Objective-C \@protocol declaration. */
1591   CXCursor_ObjCProtocolDecl              = 13,
1592   /** \brief An Objective-C \@property declaration. */
1593   CXCursor_ObjCPropertyDecl              = 14,
1594   /** \brief An Objective-C instance variable. */
1595   CXCursor_ObjCIvarDecl                  = 15,
1596   /** \brief An Objective-C instance method. */
1597   CXCursor_ObjCInstanceMethodDecl        = 16,
1598   /** \brief An Objective-C class method. */
1599   CXCursor_ObjCClassMethodDecl           = 17,
1600   /** \brief An Objective-C \@implementation. */
1601   CXCursor_ObjCImplementationDecl        = 18,
1602   /** \brief An Objective-C \@implementation for a category. */
1603   CXCursor_ObjCCategoryImplDecl          = 19,
1604   /** \brief A typedef. */
1605   CXCursor_TypedefDecl                   = 20,
1606   /** \brief A C++ class method. */
1607   CXCursor_CXXMethod                     = 21,
1608   /** \brief A C++ namespace. */
1609   CXCursor_Namespace                     = 22,
1610   /** \brief A linkage specification, e.g. 'extern "C"'. */
1611   CXCursor_LinkageSpec                   = 23,
1612   /** \brief A C++ constructor. */
1613   CXCursor_Constructor                   = 24,
1614   /** \brief A C++ destructor. */
1615   CXCursor_Destructor                    = 25,
1616   /** \brief A C++ conversion function. */
1617   CXCursor_ConversionFunction            = 26,
1618   /** \brief A C++ template type parameter. */
1619   CXCursor_TemplateTypeParameter         = 27,
1620   /** \brief A C++ non-type template parameter. */
1621   CXCursor_NonTypeTemplateParameter      = 28,
1622   /** \brief A C++ template template parameter. */
1623   CXCursor_TemplateTemplateParameter     = 29,
1624   /** \brief A C++ function template. */
1625   CXCursor_FunctionTemplate              = 30,
1626   /** \brief A C++ class template. */
1627   CXCursor_ClassTemplate                 = 31,
1628   /** \brief A C++ class template partial specialization. */
1629   CXCursor_ClassTemplatePartialSpecialization = 32,
1630   /** \brief A C++ namespace alias declaration. */
1631   CXCursor_NamespaceAlias                = 33,
1632   /** \brief A C++ using directive. */
1633   CXCursor_UsingDirective                = 34,
1634   /** \brief A C++ using declaration. */
1635   CXCursor_UsingDeclaration              = 35,
1636   /** \brief A C++ alias declaration */
1637   CXCursor_TypeAliasDecl                 = 36,
1638   /** \brief An Objective-C \@synthesize definition. */
1639   CXCursor_ObjCSynthesizeDecl            = 37,
1640   /** \brief An Objective-C \@dynamic definition. */
1641   CXCursor_ObjCDynamicDecl               = 38,
1642   /** \brief An access specifier. */
1643   CXCursor_CXXAccessSpecifier            = 39,
1644 
1645   CXCursor_FirstDecl                     = CXCursor_UnexposedDecl,
1646   CXCursor_LastDecl                      = CXCursor_CXXAccessSpecifier,
1647 
1648   /* References */
1649   CXCursor_FirstRef                      = 40, /* Decl references */
1650   CXCursor_ObjCSuperClassRef             = 40,
1651   CXCursor_ObjCProtocolRef               = 41,
1652   CXCursor_ObjCClassRef                  = 42,
1653   /**
1654    * \brief A reference to a type declaration.
1655    *
1656    * A type reference occurs anywhere where a type is named but not
1657    * declared. For example, given:
1658    *
1659    * \code
1660    * typedef unsigned size_type;
1661    * size_type size;
1662    * \endcode
1663    *
1664    * The typedef is a declaration of size_type (CXCursor_TypedefDecl),
1665    * while the type of the variable "size" is referenced. The cursor
1666    * referenced by the type of size is the typedef for size_type.
1667    */
1668   CXCursor_TypeRef                       = 43,
1669   CXCursor_CXXBaseSpecifier              = 44,
1670   /**
1671    * \brief A reference to a class template, function template, template
1672    * template parameter, or class template partial specialization.
1673    */
1674   CXCursor_TemplateRef                   = 45,
1675   /**
1676    * \brief A reference to a namespace or namespace alias.
1677    */
1678   CXCursor_NamespaceRef                  = 46,
1679   /**
1680    * \brief A reference to a member of a struct, union, or class that occurs in
1681    * some non-expression context, e.g., a designated initializer.
1682    */
1683   CXCursor_MemberRef                     = 47,
1684   /**
1685    * \brief A reference to a labeled statement.
1686    *
1687    * This cursor kind is used to describe the jump to "start_over" in the
1688    * goto statement in the following example:
1689    *
1690    * \code
1691    *   start_over:
1692    *     ++counter;
1693    *
1694    *     goto start_over;
1695    * \endcode
1696    *
1697    * A label reference cursor refers to a label statement.
1698    */
1699   CXCursor_LabelRef                      = 48,
1700 
1701   /**
1702    * \brief A reference to a set of overloaded functions or function templates
1703    * that has not yet been resolved to a specific function or function template.
1704    *
1705    * An overloaded declaration reference cursor occurs in C++ templates where
1706    * a dependent name refers to a function. For example:
1707    *
1708    * \code
1709    * template<typename T> void swap(T&, T&);
1710    *
1711    * struct X { ... };
1712    * void swap(X&, X&);
1713    *
1714    * template<typename T>
1715    * void reverse(T* first, T* last) {
1716    *   while (first < last - 1) {
1717    *     swap(*first, *--last);
1718    *     ++first;
1719    *   }
1720    * }
1721    *
1722    * struct Y { };
1723    * void swap(Y&, Y&);
1724    * \endcode
1725    *
1726    * Here, the identifier "swap" is associated with an overloaded declaration
1727    * reference. In the template definition, "swap" refers to either of the two
1728    * "swap" functions declared above, so both results will be available. At
1729    * instantiation time, "swap" may also refer to other functions found via
1730    * argument-dependent lookup (e.g., the "swap" function at the end of the
1731    * example).
1732    *
1733    * The functions \c clang_getNumOverloadedDecls() and
1734    * \c clang_getOverloadedDecl() can be used to retrieve the definitions
1735    * referenced by this cursor.
1736    */
1737   CXCursor_OverloadedDeclRef             = 49,
1738 
1739   /**
1740    * \brief A reference to a variable that occurs in some non-expression
1741    * context, e.g., a C++ lambda capture list.
1742    */
1743   CXCursor_VariableRef                   = 50,
1744 
1745   CXCursor_LastRef                       = CXCursor_VariableRef,
1746 
1747   /* Error conditions */
1748   CXCursor_FirstInvalid                  = 70,
1749   CXCursor_InvalidFile                   = 70,
1750   CXCursor_NoDeclFound                   = 71,
1751   CXCursor_NotImplemented                = 72,
1752   CXCursor_InvalidCode                   = 73,
1753   CXCursor_LastInvalid                   = CXCursor_InvalidCode,
1754 
1755   /* Expressions */
1756   CXCursor_FirstExpr                     = 100,
1757 
1758   /**
1759    * \brief An expression whose specific kind is not exposed via this
1760    * interface.
1761    *
1762    * Unexposed expressions have the same operations as any other kind
1763    * of expression; one can extract their location information,
1764    * spelling, children, etc. However, the specific kind of the
1765    * expression is not reported.
1766    */
1767   CXCursor_UnexposedExpr                 = 100,
1768 
1769   /**
1770    * \brief An expression that refers to some value declaration, such
1771    * as a function, variable, or enumerator.
1772    */
1773   CXCursor_DeclRefExpr                   = 101,
1774 
1775   /**
1776    * \brief An expression that refers to a member of a struct, union,
1777    * class, Objective-C class, etc.
1778    */
1779   CXCursor_MemberRefExpr                 = 102,
1780 
1781   /** \brief An expression that calls a function. */
1782   CXCursor_CallExpr                      = 103,
1783 
1784   /** \brief An expression that sends a message to an Objective-C
1785    object or class. */
1786   CXCursor_ObjCMessageExpr               = 104,
1787 
1788   /** \brief An expression that represents a block literal. */
1789   CXCursor_BlockExpr                     = 105,
1790 
1791   /** \brief An integer literal.
1792    */
1793   CXCursor_IntegerLiteral                = 106,
1794 
1795   /** \brief A floating point number literal.
1796    */
1797   CXCursor_FloatingLiteral               = 107,
1798 
1799   /** \brief An imaginary number literal.
1800    */
1801   CXCursor_ImaginaryLiteral              = 108,
1802 
1803   /** \brief A string literal.
1804    */
1805   CXCursor_StringLiteral                 = 109,
1806 
1807   /** \brief A character literal.
1808    */
1809   CXCursor_CharacterLiteral              = 110,
1810 
1811   /** \brief A parenthesized expression, e.g. "(1)".
1812    *
1813    * This AST node is only formed if full location information is requested.
1814    */
1815   CXCursor_ParenExpr                     = 111,
1816 
1817   /** \brief This represents the unary-expression's (except sizeof and
1818    * alignof).
1819    */
1820   CXCursor_UnaryOperator                 = 112,
1821 
1822   /** \brief [C99 6.5.2.1] Array Subscripting.
1823    */
1824   CXCursor_ArraySubscriptExpr            = 113,
1825 
1826   /** \brief A builtin binary operation expression such as "x + y" or
1827    * "x <= y".
1828    */
1829   CXCursor_BinaryOperator                = 114,
1830 
1831   /** \brief Compound assignment such as "+=".
1832    */
1833   CXCursor_CompoundAssignOperator        = 115,
1834 
1835   /** \brief The ?: ternary operator.
1836    */
1837   CXCursor_ConditionalOperator           = 116,
1838 
1839   /** \brief An explicit cast in C (C99 6.5.4) or a C-style cast in C++
1840    * (C++ [expr.cast]), which uses the syntax (Type)expr.
1841    *
1842    * For example: (int)f.
1843    */
1844   CXCursor_CStyleCastExpr                = 117,
1845 
1846   /** \brief [C99 6.5.2.5]
1847    */
1848   CXCursor_CompoundLiteralExpr           = 118,
1849 
1850   /** \brief Describes an C or C++ initializer list.
1851    */
1852   CXCursor_InitListExpr                  = 119,
1853 
1854   /** \brief The GNU address of label extension, representing &&label.
1855    */
1856   CXCursor_AddrLabelExpr                 = 120,
1857 
1858   /** \brief This is the GNU Statement Expression extension: ({int X=4; X;})
1859    */
1860   CXCursor_StmtExpr                      = 121,
1861 
1862   /** \brief Represents a C11 generic selection.
1863    */
1864   CXCursor_GenericSelectionExpr          = 122,
1865 
1866   /** \brief Implements the GNU __null extension, which is a name for a null
1867    * pointer constant that has integral type (e.g., int or long) and is the same
1868    * size and alignment as a pointer.
1869    *
1870    * The __null extension is typically only used by system headers, which define
1871    * NULL as __null in C++ rather than using 0 (which is an integer that may not
1872    * match the size of a pointer).
1873    */
1874   CXCursor_GNUNullExpr                   = 123,
1875 
1876   /** \brief C++'s static_cast<> expression.
1877    */
1878   CXCursor_CXXStaticCastExpr             = 124,
1879 
1880   /** \brief C++'s dynamic_cast<> expression.
1881    */
1882   CXCursor_CXXDynamicCastExpr            = 125,
1883 
1884   /** \brief C++'s reinterpret_cast<> expression.
1885    */
1886   CXCursor_CXXReinterpretCastExpr        = 126,
1887 
1888   /** \brief C++'s const_cast<> expression.
1889    */
1890   CXCursor_CXXConstCastExpr              = 127,
1891 
1892   /** \brief Represents an explicit C++ type conversion that uses "functional"
1893    * notion (C++ [expr.type.conv]).
1894    *
1895    * Example:
1896    * \code
1897    *   x = int(0.5);
1898    * \endcode
1899    */
1900   CXCursor_CXXFunctionalCastExpr         = 128,
1901 
1902   /** \brief A C++ typeid expression (C++ [expr.typeid]).
1903    */
1904   CXCursor_CXXTypeidExpr                 = 129,
1905 
1906   /** \brief [C++ 2.13.5] C++ Boolean Literal.
1907    */
1908   CXCursor_CXXBoolLiteralExpr            = 130,
1909 
1910   /** \brief [C++0x 2.14.7] C++ Pointer Literal.
1911    */
1912   CXCursor_CXXNullPtrLiteralExpr         = 131,
1913 
1914   /** \brief Represents the "this" expression in C++
1915    */
1916   CXCursor_CXXThisExpr                   = 132,
1917 
1918   /** \brief [C++ 15] C++ Throw Expression.
1919    *
1920    * This handles 'throw' and 'throw' assignment-expression. When
1921    * assignment-expression isn't present, Op will be null.
1922    */
1923   CXCursor_CXXThrowExpr                  = 133,
1924 
1925   /** \brief A new expression for memory allocation and constructor calls, e.g:
1926    * "new CXXNewExpr(foo)".
1927    */
1928   CXCursor_CXXNewExpr                    = 134,
1929 
1930   /** \brief A delete expression for memory deallocation and destructor calls,
1931    * e.g. "delete[] pArray".
1932    */
1933   CXCursor_CXXDeleteExpr                 = 135,
1934 
1935   /** \brief A unary expression. (noexcept, sizeof, or other traits)
1936    */
1937   CXCursor_UnaryExpr                     = 136,
1938 
1939   /** \brief An Objective-C string literal i.e. @"foo".
1940    */
1941   CXCursor_ObjCStringLiteral             = 137,
1942 
1943   /** \brief An Objective-C \@encode expression.
1944    */
1945   CXCursor_ObjCEncodeExpr                = 138,
1946 
1947   /** \brief An Objective-C \@selector expression.
1948    */
1949   CXCursor_ObjCSelectorExpr              = 139,
1950 
1951   /** \brief An Objective-C \@protocol expression.
1952    */
1953   CXCursor_ObjCProtocolExpr              = 140,
1954 
1955   /** \brief An Objective-C "bridged" cast expression, which casts between
1956    * Objective-C pointers and C pointers, transferring ownership in the process.
1957    *
1958    * \code
1959    *   NSString *str = (__bridge_transfer NSString *)CFCreateString();
1960    * \endcode
1961    */
1962   CXCursor_ObjCBridgedCastExpr           = 141,
1963 
1964   /** \brief Represents a C++0x pack expansion that produces a sequence of
1965    * expressions.
1966    *
1967    * A pack expansion expression contains a pattern (which itself is an
1968    * expression) followed by an ellipsis. For example:
1969    *
1970    * \code
1971    * template<typename F, typename ...Types>
1972    * void forward(F f, Types &&...args) {
1973    *  f(static_cast<Types&&>(args)...);
1974    * }
1975    * \endcode
1976    */
1977   CXCursor_PackExpansionExpr             = 142,
1978 
1979   /** \brief Represents an expression that computes the length of a parameter
1980    * pack.
1981    *
1982    * \code
1983    * template<typename ...Types>
1984    * struct count {
1985    *   static const unsigned value = sizeof...(Types);
1986    * };
1987    * \endcode
1988    */
1989   CXCursor_SizeOfPackExpr                = 143,
1990 
1991   /* \brief Represents a C++ lambda expression that produces a local function
1992    * object.
1993    *
1994    * \code
1995    * void abssort(float *x, unsigned N) {
1996    *   std::sort(x, x + N,
1997    *             [](float a, float b) {
1998    *               return std::abs(a) < std::abs(b);
1999    *             });
2000    * }
2001    * \endcode
2002    */
2003   CXCursor_LambdaExpr                    = 144,
2004 
2005   /** \brief Objective-c Boolean Literal.
2006    */
2007   CXCursor_ObjCBoolLiteralExpr           = 145,
2008 
2009   /** \brief Represents the "self" expression in an Objective-C method.
2010    */
2011   CXCursor_ObjCSelfExpr                  = 146,
2012 
2013   /** \brief OpenMP 4.0 [2.4, Array Section].
2014    */
2015   CXCursor_OMPArraySectionExpr           = 147,
2016 
2017   CXCursor_LastExpr                      = CXCursor_OMPArraySectionExpr,
2018 
2019   /* Statements */
2020   CXCursor_FirstStmt                     = 200,
2021   /**
2022    * \brief A statement whose specific kind is not exposed via this
2023    * interface.
2024    *
2025    * Unexposed statements have the same operations as any other kind of
2026    * statement; one can extract their location information, spelling,
2027    * children, etc. However, the specific kind of the statement is not
2028    * reported.
2029    */
2030   CXCursor_UnexposedStmt                 = 200,
2031 
2032   /** \brief A labelled statement in a function.
2033    *
2034    * This cursor kind is used to describe the "start_over:" label statement in
2035    * the following example:
2036    *
2037    * \code
2038    *   start_over:
2039    *     ++counter;
2040    * \endcode
2041    *
2042    */
2043   CXCursor_LabelStmt                     = 201,
2044 
2045   /** \brief A group of statements like { stmt stmt }.
2046    *
2047    * This cursor kind is used to describe compound statements, e.g. function
2048    * bodies.
2049    */
2050   CXCursor_CompoundStmt                  = 202,
2051 
2052   /** \brief A case statement.
2053    */
2054   CXCursor_CaseStmt                      = 203,
2055 
2056   /** \brief A default statement.
2057    */
2058   CXCursor_DefaultStmt                   = 204,
2059 
2060   /** \brief An if statement
2061    */
2062   CXCursor_IfStmt                        = 205,
2063 
2064   /** \brief A switch statement.
2065    */
2066   CXCursor_SwitchStmt                    = 206,
2067 
2068   /** \brief A while statement.
2069    */
2070   CXCursor_WhileStmt                     = 207,
2071 
2072   /** \brief A do statement.
2073    */
2074   CXCursor_DoStmt                        = 208,
2075 
2076   /** \brief A for statement.
2077    */
2078   CXCursor_ForStmt                       = 209,
2079 
2080   /** \brief A goto statement.
2081    */
2082   CXCursor_GotoStmt                      = 210,
2083 
2084   /** \brief An indirect goto statement.
2085    */
2086   CXCursor_IndirectGotoStmt              = 211,
2087 
2088   /** \brief A continue statement.
2089    */
2090   CXCursor_ContinueStmt                  = 212,
2091 
2092   /** \brief A break statement.
2093    */
2094   CXCursor_BreakStmt                     = 213,
2095 
2096   /** \brief A return statement.
2097    */
2098   CXCursor_ReturnStmt                    = 214,
2099 
2100   /** \brief A GCC inline assembly statement extension.
2101    */
2102   CXCursor_GCCAsmStmt                    = 215,
2103   CXCursor_AsmStmt                       = CXCursor_GCCAsmStmt,
2104 
2105   /** \brief Objective-C's overall \@try-\@catch-\@finally statement.
2106    */
2107   CXCursor_ObjCAtTryStmt                 = 216,
2108 
2109   /** \brief Objective-C's \@catch statement.
2110    */
2111   CXCursor_ObjCAtCatchStmt               = 217,
2112 
2113   /** \brief Objective-C's \@finally statement.
2114    */
2115   CXCursor_ObjCAtFinallyStmt             = 218,
2116 
2117   /** \brief Objective-C's \@throw statement.
2118    */
2119   CXCursor_ObjCAtThrowStmt               = 219,
2120 
2121   /** \brief Objective-C's \@synchronized statement.
2122    */
2123   CXCursor_ObjCAtSynchronizedStmt        = 220,
2124 
2125   /** \brief Objective-C's autorelease pool statement.
2126    */
2127   CXCursor_ObjCAutoreleasePoolStmt       = 221,
2128 
2129   /** \brief Objective-C's collection statement.
2130    */
2131   CXCursor_ObjCForCollectionStmt         = 222,
2132 
2133   /** \brief C++'s catch statement.
2134    */
2135   CXCursor_CXXCatchStmt                  = 223,
2136 
2137   /** \brief C++'s try statement.
2138    */
2139   CXCursor_CXXTryStmt                    = 224,
2140 
2141   /** \brief C++'s for (* : *) statement.
2142    */
2143   CXCursor_CXXForRangeStmt               = 225,
2144 
2145   /** \brief Windows Structured Exception Handling's try statement.
2146    */
2147   CXCursor_SEHTryStmt                    = 226,
2148 
2149   /** \brief Windows Structured Exception Handling's except statement.
2150    */
2151   CXCursor_SEHExceptStmt                 = 227,
2152 
2153   /** \brief Windows Structured Exception Handling's finally statement.
2154    */
2155   CXCursor_SEHFinallyStmt                = 228,
2156 
2157   /** \brief A MS inline assembly statement extension.
2158    */
2159   CXCursor_MSAsmStmt                     = 229,
2160 
2161   /** \brief The null statement ";": C99 6.8.3p3.
2162    *
2163    * This cursor kind is used to describe the null statement.
2164    */
2165   CXCursor_NullStmt                      = 230,
2166 
2167   /** \brief Adaptor class for mixing declarations with statements and
2168    * expressions.
2169    */
2170   CXCursor_DeclStmt                      = 231,
2171 
2172   /** \brief OpenMP parallel directive.
2173    */
2174   CXCursor_OMPParallelDirective          = 232,
2175 
2176   /** \brief OpenMP SIMD directive.
2177    */
2178   CXCursor_OMPSimdDirective              = 233,
2179 
2180   /** \brief OpenMP for directive.
2181    */
2182   CXCursor_OMPForDirective               = 234,
2183 
2184   /** \brief OpenMP sections directive.
2185    */
2186   CXCursor_OMPSectionsDirective          = 235,
2187 
2188   /** \brief OpenMP section directive.
2189    */
2190   CXCursor_OMPSectionDirective           = 236,
2191 
2192   /** \brief OpenMP single directive.
2193    */
2194   CXCursor_OMPSingleDirective            = 237,
2195 
2196   /** \brief OpenMP parallel for directive.
2197    */
2198   CXCursor_OMPParallelForDirective       = 238,
2199 
2200   /** \brief OpenMP parallel sections directive.
2201    */
2202   CXCursor_OMPParallelSectionsDirective  = 239,
2203 
2204   /** \brief OpenMP task directive.
2205    */
2206   CXCursor_OMPTaskDirective              = 240,
2207 
2208   /** \brief OpenMP master directive.
2209    */
2210   CXCursor_OMPMasterDirective            = 241,
2211 
2212   /** \brief OpenMP critical directive.
2213    */
2214   CXCursor_OMPCriticalDirective          = 242,
2215 
2216   /** \brief OpenMP taskyield directive.
2217    */
2218   CXCursor_OMPTaskyieldDirective         = 243,
2219 
2220   /** \brief OpenMP barrier directive.
2221    */
2222   CXCursor_OMPBarrierDirective           = 244,
2223 
2224   /** \brief OpenMP taskwait directive.
2225    */
2226   CXCursor_OMPTaskwaitDirective          = 245,
2227 
2228   /** \brief OpenMP flush directive.
2229    */
2230   CXCursor_OMPFlushDirective             = 246,
2231 
2232   /** \brief Windows Structured Exception Handling's leave statement.
2233    */
2234   CXCursor_SEHLeaveStmt                  = 247,
2235 
2236   /** \brief OpenMP ordered directive.
2237    */
2238   CXCursor_OMPOrderedDirective           = 248,
2239 
2240   /** \brief OpenMP atomic directive.
2241    */
2242   CXCursor_OMPAtomicDirective            = 249,
2243 
2244   /** \brief OpenMP for SIMD directive.
2245    */
2246   CXCursor_OMPForSimdDirective           = 250,
2247 
2248   /** \brief OpenMP parallel for SIMD directive.
2249    */
2250   CXCursor_OMPParallelForSimdDirective   = 251,
2251 
2252   /** \brief OpenMP target directive.
2253    */
2254   CXCursor_OMPTargetDirective            = 252,
2255 
2256   /** \brief OpenMP teams directive.
2257    */
2258   CXCursor_OMPTeamsDirective             = 253,
2259 
2260   /** \brief OpenMP taskgroup directive.
2261    */
2262   CXCursor_OMPTaskgroupDirective         = 254,
2263 
2264   /** \brief OpenMP cancellation point directive.
2265    */
2266   CXCursor_OMPCancellationPointDirective = 255,
2267 
2268   /** \brief OpenMP cancel directive.
2269    */
2270   CXCursor_OMPCancelDirective            = 256,
2271 
2272   /** \brief OpenMP target data directive.
2273    */
2274   CXCursor_OMPTargetDataDirective        = 257,
2275 
2276   /** \brief OpenMP taskloop directive.
2277    */
2278   CXCursor_OMPTaskLoopDirective          = 258,
2279 
2280   /** \brief OpenMP taskloop simd directive.
2281    */
2282   CXCursor_OMPTaskLoopSimdDirective      = 259,
2283 
2284   /** \brief OpenMP distribute directive.
2285    */
2286   CXCursor_OMPDistributeDirective        = 260,
2287 
2288   /** \brief OpenMP target enter data directive.
2289    */
2290   CXCursor_OMPTargetEnterDataDirective   = 261,
2291 
2292   /** \brief OpenMP target exit data directive.
2293    */
2294   CXCursor_OMPTargetExitDataDirective    = 262,
2295 
2296   /** \brief OpenMP target parallel directive.
2297    */
2298   CXCursor_OMPTargetParallelDirective    = 263,
2299 
2300   /** \brief OpenMP target parallel for directive.
2301    */
2302   CXCursor_OMPTargetParallelForDirective = 264,
2303 
2304   /** \brief OpenMP target update directive.
2305    */
2306   CXCursor_OMPTargetUpdateDirective      = 265,
2307 
2308   /** \brief OpenMP distribute parallel for directive.
2309    */
2310   CXCursor_OMPDistributeParallelForDirective = 266,
2311 
2312   /** \brief OpenMP distribute parallel for simd directive.
2313    */
2314   CXCursor_OMPDistributeParallelForSimdDirective = 267,
2315 
2316   /** \brief OpenMP distribute simd directive.
2317    */
2318   CXCursor_OMPDistributeSimdDirective = 268,
2319 
2320   /** \brief OpenMP target parallel for simd directive.
2321    */
2322   CXCursor_OMPTargetParallelForSimdDirective = 269,
2323 
2324   CXCursor_LastStmt = CXCursor_OMPTargetParallelForSimdDirective,
2325 
2326   /**
2327    * \brief Cursor that represents the translation unit itself.
2328    *
2329    * The translation unit cursor exists primarily to act as the root
2330    * cursor for traversing the contents of a translation unit.
2331    */
2332   CXCursor_TranslationUnit               = 300,
2333 
2334   /* Attributes */
2335   CXCursor_FirstAttr                     = 400,
2336   /**
2337    * \brief An attribute whose specific kind is not exposed via this
2338    * interface.
2339    */
2340   CXCursor_UnexposedAttr                 = 400,
2341 
2342   CXCursor_IBActionAttr                  = 401,
2343   CXCursor_IBOutletAttr                  = 402,
2344   CXCursor_IBOutletCollectionAttr        = 403,
2345   CXCursor_CXXFinalAttr                  = 404,
2346   CXCursor_CXXOverrideAttr               = 405,
2347   CXCursor_AnnotateAttr                  = 406,
2348   CXCursor_AsmLabelAttr                  = 407,
2349   CXCursor_PackedAttr                    = 408,
2350   CXCursor_PureAttr                      = 409,
2351   CXCursor_ConstAttr                     = 410,
2352   CXCursor_NoDuplicateAttr               = 411,
2353   CXCursor_CUDAConstantAttr              = 412,
2354   CXCursor_CUDADeviceAttr                = 413,
2355   CXCursor_CUDAGlobalAttr                = 414,
2356   CXCursor_CUDAHostAttr                  = 415,
2357   CXCursor_CUDASharedAttr                = 416,
2358   CXCursor_VisibilityAttr                = 417,
2359   CXCursor_DLLExport                     = 418,
2360   CXCursor_DLLImport                     = 419,
2361   CXCursor_LastAttr                      = CXCursor_DLLImport,
2362 
2363   /* Preprocessing */
2364   CXCursor_PreprocessingDirective        = 500,
2365   CXCursor_MacroDefinition               = 501,
2366   CXCursor_MacroExpansion                = 502,
2367   CXCursor_MacroInstantiation            = CXCursor_MacroExpansion,
2368   CXCursor_InclusionDirective            = 503,
2369   CXCursor_FirstPreprocessing            = CXCursor_PreprocessingDirective,
2370   CXCursor_LastPreprocessing             = CXCursor_InclusionDirective,
2371 
2372   /* Extra Declarations */
2373   /**
2374    * \brief A module import declaration.
2375    */
2376   CXCursor_ModuleImportDecl              = 600,
2377   CXCursor_TypeAliasTemplateDecl         = 601,
2378   /**
2379    * \brief A static_assert or _Static_assert node
2380    */
2381   CXCursor_StaticAssert                  = 602,
2382   CXCursor_FirstExtraDecl                = CXCursor_ModuleImportDecl,
2383   CXCursor_LastExtraDecl                 = CXCursor_StaticAssert,
2384 
2385   /**
2386    * \brief A code completion overload candidate.
2387    */
2388   CXCursor_OverloadCandidate             = 700
2389 };
2390 
2391 /**
2392  * \brief A cursor representing some element in the abstract syntax tree for
2393  * a translation unit.
2394  *
2395  * The cursor abstraction unifies the different kinds of entities in a
2396  * program--declaration, statements, expressions, references to declarations,
2397  * etc.--under a single "cursor" abstraction with a common set of operations.
2398  * Common operation for a cursor include: getting the physical location in
2399  * a source file where the cursor points, getting the name associated with a
2400  * cursor, and retrieving cursors for any child nodes of a particular cursor.
2401  *
2402  * Cursors can be produced in two specific ways.
2403  * clang_getTranslationUnitCursor() produces a cursor for a translation unit,
2404  * from which one can use clang_visitChildren() to explore the rest of the
2405  * translation unit. clang_getCursor() maps from a physical source location
2406  * to the entity that resides at that location, allowing one to map from the
2407  * source code into the AST.
2408  */
2409 typedef struct {
2410   enum CXCursorKind kind;
2411   int xdata;
2412   const void *data[3];
2413 } CXCursor;
2414 
2415 /**
2416  * \defgroup CINDEX_CURSOR_MANIP Cursor manipulations
2417  *
2418  * @{
2419  */
2420 
2421 /**
2422  * \brief Retrieve the NULL cursor, which represents no entity.
2423  */
2424 CINDEX_LINKAGE CXCursor clang_getNullCursor(void);
2425 
2426 /**
2427  * \brief Retrieve the cursor that represents the given translation unit.
2428  *
2429  * The translation unit cursor can be used to start traversing the
2430  * various declarations within the given translation unit.
2431  */
2432 CINDEX_LINKAGE CXCursor clang_getTranslationUnitCursor(CXTranslationUnit);
2433 
2434 /**
2435  * \brief Determine whether two cursors are equivalent.
2436  */
2437 CINDEX_LINKAGE unsigned clang_equalCursors(CXCursor, CXCursor);
2438 
2439 /**
2440  * \brief Returns non-zero if \p cursor is null.
2441  */
2442 CINDEX_LINKAGE int clang_Cursor_isNull(CXCursor cursor);
2443 
2444 /**
2445  * \brief Compute a hash value for the given cursor.
2446  */
2447 CINDEX_LINKAGE unsigned clang_hashCursor(CXCursor);
2448 
2449 /**
2450  * \brief Retrieve the kind of the given cursor.
2451  */
2452 CINDEX_LINKAGE enum CXCursorKind clang_getCursorKind(CXCursor);
2453 
2454 /**
2455  * \brief Determine whether the given cursor kind represents a declaration.
2456  */
2457 CINDEX_LINKAGE unsigned clang_isDeclaration(enum CXCursorKind);
2458 
2459 /**
2460  * \brief Determine whether the given cursor kind represents a simple
2461  * reference.
2462  *
2463  * Note that other kinds of cursors (such as expressions) can also refer to
2464  * other cursors. Use clang_getCursorReferenced() to determine whether a
2465  * particular cursor refers to another entity.
2466  */
2467 CINDEX_LINKAGE unsigned clang_isReference(enum CXCursorKind);
2468 
2469 /**
2470  * \brief Determine whether the given cursor kind represents an expression.
2471  */
2472 CINDEX_LINKAGE unsigned clang_isExpression(enum CXCursorKind);
2473 
2474 /**
2475  * \brief Determine whether the given cursor kind represents a statement.
2476  */
2477 CINDEX_LINKAGE unsigned clang_isStatement(enum CXCursorKind);
2478 
2479 /**
2480  * \brief Determine whether the given cursor kind represents an attribute.
2481  */
2482 CINDEX_LINKAGE unsigned clang_isAttribute(enum CXCursorKind);
2483 
2484 /**
2485  * \brief Determine whether the given cursor has any attributes.
2486  */
2487 CINDEX_LINKAGE unsigned clang_Cursor_hasAttrs(CXCursor C);
2488 
2489 /**
2490  * \brief Determine whether the given cursor kind represents an invalid
2491  * cursor.
2492  */
2493 CINDEX_LINKAGE unsigned clang_isInvalid(enum CXCursorKind);
2494 
2495 /**
2496  * \brief Determine whether the given cursor kind represents a translation
2497  * unit.
2498  */
2499 CINDEX_LINKAGE unsigned clang_isTranslationUnit(enum CXCursorKind);
2500 
2501 /***
2502  * \brief Determine whether the given cursor represents a preprocessing
2503  * element, such as a preprocessor directive or macro instantiation.
2504  */
2505 CINDEX_LINKAGE unsigned clang_isPreprocessing(enum CXCursorKind);
2506 
2507 /***
2508  * \brief Determine whether the given cursor represents a currently
2509  *  unexposed piece of the AST (e.g., CXCursor_UnexposedStmt).
2510  */
2511 CINDEX_LINKAGE unsigned clang_isUnexposed(enum CXCursorKind);
2512 
2513 /**
2514  * \brief Describe the linkage of the entity referred to by a cursor.
2515  */
2516 enum CXLinkageKind {
2517   /** \brief This value indicates that no linkage information is available
2518    * for a provided CXCursor. */
2519   CXLinkage_Invalid,
2520   /**
2521    * \brief This is the linkage for variables, parameters, and so on that
2522    *  have automatic storage.  This covers normal (non-extern) local variables.
2523    */
2524   CXLinkage_NoLinkage,
2525   /** \brief This is the linkage for static variables and static functions. */
2526   CXLinkage_Internal,
2527   /** \brief This is the linkage for entities with external linkage that live
2528    * in C++ anonymous namespaces.*/
2529   CXLinkage_UniqueExternal,
2530   /** \brief This is the linkage for entities with true, external linkage. */
2531   CXLinkage_External
2532 };
2533 
2534 /**
2535  * \brief Determine the linkage of the entity referred to by a given cursor.
2536  */
2537 CINDEX_LINKAGE enum CXLinkageKind clang_getCursorLinkage(CXCursor cursor);
2538 
2539 enum CXVisibilityKind {
2540   /** \brief This value indicates that no visibility information is available
2541    * for a provided CXCursor. */
2542   CXVisibility_Invalid,
2543 
2544   /** \brief Symbol not seen by the linker. */
2545   CXVisibility_Hidden,
2546   /** \brief Symbol seen by the linker but resolves to a symbol inside this object. */
2547   CXVisibility_Protected,
2548   /** \brief Symbol seen by the linker and acts like a normal symbol. */
2549   CXVisibility_Default
2550 };
2551 
2552 /**
2553  * \brief Describe the visibility of the entity referred to by a cursor.
2554  *
2555  * This returns the default visibility if not explicitly specified by
2556  * a visibility attribute. The default visibility may be changed by
2557  * commandline arguments.
2558  *
2559  * \param cursor The cursor to query.
2560  *
2561  * \returns The visibility of the cursor.
2562  */
2563 CINDEX_LINKAGE enum CXVisibilityKind clang_getCursorVisibility(CXCursor cursor);
2564 
2565 /**
2566  * \brief Determine the availability of the entity that this cursor refers to,
2567  * taking the current target platform into account.
2568  *
2569  * \param cursor The cursor to query.
2570  *
2571  * \returns The availability of the cursor.
2572  */
2573 CINDEX_LINKAGE enum CXAvailabilityKind
2574 clang_getCursorAvailability(CXCursor cursor);
2575 
2576 /**
2577  * Describes the availability of a given entity on a particular platform, e.g.,
2578  * a particular class might only be available on Mac OS 10.7 or newer.
2579  */
2580 typedef struct CXPlatformAvailability {
2581   /**
2582    * \brief A string that describes the platform for which this structure
2583    * provides availability information.
2584    *
2585    * Possible values are "ios" or "macos".
2586    */
2587   CXString Platform;
2588   /**
2589    * \brief The version number in which this entity was introduced.
2590    */
2591   CXVersion Introduced;
2592   /**
2593    * \brief The version number in which this entity was deprecated (but is
2594    * still available).
2595    */
2596   CXVersion Deprecated;
2597   /**
2598    * \brief The version number in which this entity was obsoleted, and therefore
2599    * is no longer available.
2600    */
2601   CXVersion Obsoleted;
2602   /**
2603    * \brief Whether the entity is unconditionally unavailable on this platform.
2604    */
2605   int Unavailable;
2606   /**
2607    * \brief An optional message to provide to a user of this API, e.g., to
2608    * suggest replacement APIs.
2609    */
2610   CXString Message;
2611 } CXPlatformAvailability;
2612 
2613 /**
2614  * \brief Determine the availability of the entity that this cursor refers to
2615  * on any platforms for which availability information is known.
2616  *
2617  * \param cursor The cursor to query.
2618  *
2619  * \param always_deprecated If non-NULL, will be set to indicate whether the
2620  * entity is deprecated on all platforms.
2621  *
2622  * \param deprecated_message If non-NULL, will be set to the message text
2623  * provided along with the unconditional deprecation of this entity. The client
2624  * is responsible for deallocating this string.
2625  *
2626  * \param always_unavailable If non-NULL, will be set to indicate whether the
2627  * entity is unavailable on all platforms.
2628  *
2629  * \param unavailable_message If non-NULL, will be set to the message text
2630  * provided along with the unconditional unavailability of this entity. The
2631  * client is responsible for deallocating this string.
2632  *
2633  * \param availability If non-NULL, an array of CXPlatformAvailability instances
2634  * that will be populated with platform availability information, up to either
2635  * the number of platforms for which availability information is available (as
2636  * returned by this function) or \c availability_size, whichever is smaller.
2637  *
2638  * \param availability_size The number of elements available in the
2639  * \c availability array.
2640  *
2641  * \returns The number of platforms (N) for which availability information is
2642  * available (which is unrelated to \c availability_size).
2643  *
2644  * Note that the client is responsible for calling
2645  * \c clang_disposeCXPlatformAvailability to free each of the
2646  * platform-availability structures returned. There are
2647  * \c min(N, availability_size) such structures.
2648  */
2649 CINDEX_LINKAGE int
2650 clang_getCursorPlatformAvailability(CXCursor cursor,
2651                                     int *always_deprecated,
2652                                     CXString *deprecated_message,
2653                                     int *always_unavailable,
2654                                     CXString *unavailable_message,
2655                                     CXPlatformAvailability *availability,
2656                                     int availability_size);
2657 
2658 /**
2659  * \brief Free the memory associated with a \c CXPlatformAvailability structure.
2660  */
2661 CINDEX_LINKAGE void
2662 clang_disposeCXPlatformAvailability(CXPlatformAvailability *availability);
2663 
2664 /**
2665  * \brief Describe the "language" of the entity referred to by a cursor.
2666  */
2667 enum CXLanguageKind {
2668   CXLanguage_Invalid = 0,
2669   CXLanguage_C,
2670   CXLanguage_ObjC,
2671   CXLanguage_CPlusPlus
2672 };
2673 
2674 /**
2675  * \brief Determine the "language" of the entity referred to by a given cursor.
2676  */
2677 CINDEX_LINKAGE enum CXLanguageKind clang_getCursorLanguage(CXCursor cursor);
2678 
2679 /**
2680  * \brief Returns the translation unit that a cursor originated from.
2681  */
2682 CINDEX_LINKAGE CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor);
2683 
2684 /**
2685  * \brief A fast container representing a set of CXCursors.
2686  */
2687 typedef struct CXCursorSetImpl *CXCursorSet;
2688 
2689 /**
2690  * \brief Creates an empty CXCursorSet.
2691  */
2692 CINDEX_LINKAGE CXCursorSet clang_createCXCursorSet(void);
2693 
2694 /**
2695  * \brief Disposes a CXCursorSet and releases its associated memory.
2696  */
2697 CINDEX_LINKAGE void clang_disposeCXCursorSet(CXCursorSet cset);
2698 
2699 /**
2700  * \brief Queries a CXCursorSet to see if it contains a specific CXCursor.
2701  *
2702  * \returns non-zero if the set contains the specified cursor.
2703 */
2704 CINDEX_LINKAGE unsigned clang_CXCursorSet_contains(CXCursorSet cset,
2705                                                    CXCursor cursor);
2706 
2707 /**
2708  * \brief Inserts a CXCursor into a CXCursorSet.
2709  *
2710  * \returns zero if the CXCursor was already in the set, and non-zero otherwise.
2711 */
2712 CINDEX_LINKAGE unsigned clang_CXCursorSet_insert(CXCursorSet cset,
2713                                                  CXCursor cursor);
2714 
2715 /**
2716  * \brief Determine the semantic parent of the given cursor.
2717  *
2718  * The semantic parent of a cursor is the cursor that semantically contains
2719  * the given \p cursor. For many declarations, the lexical and semantic parents
2720  * are equivalent (the lexical parent is returned by
2721  * \c clang_getCursorLexicalParent()). They diverge when declarations or
2722  * definitions are provided out-of-line. For example:
2723  *
2724  * \code
2725  * class C {
2726  *  void f();
2727  * };
2728  *
2729  * void C::f() { }
2730  * \endcode
2731  *
2732  * In the out-of-line definition of \c C::f, the semantic parent is
2733  * the class \c C, of which this function is a member. The lexical parent is
2734  * the place where the declaration actually occurs in the source code; in this
2735  * case, the definition occurs in the translation unit. In general, the
2736  * lexical parent for a given entity can change without affecting the semantics
2737  * of the program, and the lexical parent of different declarations of the
2738  * same entity may be different. Changing the semantic parent of a declaration,
2739  * on the other hand, can have a major impact on semantics, and redeclarations
2740  * of a particular entity should all have the same semantic context.
2741  *
2742  * In the example above, both declarations of \c C::f have \c C as their
2743  * semantic context, while the lexical context of the first \c C::f is \c C
2744  * and the lexical context of the second \c C::f is the translation unit.
2745  *
2746  * For global declarations, the semantic parent is the translation unit.
2747  */
2748 CINDEX_LINKAGE CXCursor clang_getCursorSemanticParent(CXCursor cursor);
2749 
2750 /**
2751  * \brief Determine the lexical parent of the given cursor.
2752  *
2753  * The lexical parent of a cursor is the cursor in which the given \p cursor
2754  * was actually written. For many declarations, the lexical and semantic parents
2755  * are equivalent (the semantic parent is returned by
2756  * \c clang_getCursorSemanticParent()). They diverge when declarations or
2757  * definitions are provided out-of-line. For example:
2758  *
2759  * \code
2760  * class C {
2761  *  void f();
2762  * };
2763  *
2764  * void C::f() { }
2765  * \endcode
2766  *
2767  * In the out-of-line definition of \c C::f, the semantic parent is
2768  * the class \c C, of which this function is a member. The lexical parent is
2769  * the place where the declaration actually occurs in the source code; in this
2770  * case, the definition occurs in the translation unit. In general, the
2771  * lexical parent for a given entity can change without affecting the semantics
2772  * of the program, and the lexical parent of different declarations of the
2773  * same entity may be different. Changing the semantic parent of a declaration,
2774  * on the other hand, can have a major impact on semantics, and redeclarations
2775  * of a particular entity should all have the same semantic context.
2776  *
2777  * In the example above, both declarations of \c C::f have \c C as their
2778  * semantic context, while the lexical context of the first \c C::f is \c C
2779  * and the lexical context of the second \c C::f is the translation unit.
2780  *
2781  * For declarations written in the global scope, the lexical parent is
2782  * the translation unit.
2783  */
2784 CINDEX_LINKAGE CXCursor clang_getCursorLexicalParent(CXCursor cursor);
2785 
2786 /**
2787  * \brief Determine the set of methods that are overridden by the given
2788  * method.
2789  *
2790  * In both Objective-C and C++, a method (aka virtual member function,
2791  * in C++) can override a virtual method in a base class. For
2792  * Objective-C, a method is said to override any method in the class's
2793  * base class, its protocols, or its categories' protocols, that has the same
2794  * selector and is of the same kind (class or instance).
2795  * If no such method exists, the search continues to the class's superclass,
2796  * its protocols, and its categories, and so on. A method from an Objective-C
2797  * implementation is considered to override the same methods as its
2798  * corresponding method in the interface.
2799  *
2800  * For C++, a virtual member function overrides any virtual member
2801  * function with the same signature that occurs in its base
2802  * classes. With multiple inheritance, a virtual member function can
2803  * override several virtual member functions coming from different
2804  * base classes.
2805  *
2806  * In all cases, this function determines the immediate overridden
2807  * method, rather than all of the overridden methods. For example, if
2808  * a method is originally declared in a class A, then overridden in B
2809  * (which in inherits from A) and also in C (which inherited from B),
2810  * then the only overridden method returned from this function when
2811  * invoked on C's method will be B's method. The client may then
2812  * invoke this function again, given the previously-found overridden
2813  * methods, to map out the complete method-override set.
2814  *
2815  * \param cursor A cursor representing an Objective-C or C++
2816  * method. This routine will compute the set of methods that this
2817  * method overrides.
2818  *
2819  * \param overridden A pointer whose pointee will be replaced with a
2820  * pointer to an array of cursors, representing the set of overridden
2821  * methods. If there are no overridden methods, the pointee will be
2822  * set to NULL. The pointee must be freed via a call to
2823  * \c clang_disposeOverriddenCursors().
2824  *
2825  * \param num_overridden A pointer to the number of overridden
2826  * functions, will be set to the number of overridden functions in the
2827  * array pointed to by \p overridden.
2828  */
2829 CINDEX_LINKAGE void clang_getOverriddenCursors(CXCursor cursor,
2830                                                CXCursor **overridden,
2831                                                unsigned *num_overridden);
2832 
2833 /**
2834  * \brief Free the set of overridden cursors returned by \c
2835  * clang_getOverriddenCursors().
2836  */
2837 CINDEX_LINKAGE void clang_disposeOverriddenCursors(CXCursor *overridden);
2838 
2839 /**
2840  * \brief Retrieve the file that is included by the given inclusion directive
2841  * cursor.
2842  */
2843 CINDEX_LINKAGE CXFile clang_getIncludedFile(CXCursor cursor);
2844 
2845 /**
2846  * @}
2847  */
2848 
2849 /**
2850  * \defgroup CINDEX_CURSOR_SOURCE Mapping between cursors and source code
2851  *
2852  * Cursors represent a location within the Abstract Syntax Tree (AST). These
2853  * routines help map between cursors and the physical locations where the
2854  * described entities occur in the source code. The mapping is provided in
2855  * both directions, so one can map from source code to the AST and back.
2856  *
2857  * @{
2858  */
2859 
2860 /**
2861  * \brief Map a source location to the cursor that describes the entity at that
2862  * location in the source code.
2863  *
2864  * clang_getCursor() maps an arbitrary source location within a translation
2865  * unit down to the most specific cursor that describes the entity at that
2866  * location. For example, given an expression \c x + y, invoking
2867  * clang_getCursor() with a source location pointing to "x" will return the
2868  * cursor for "x"; similarly for "y". If the cursor points anywhere between
2869  * "x" or "y" (e.g., on the + or the whitespace around it), clang_getCursor()
2870  * will return a cursor referring to the "+" expression.
2871  *
2872  * \returns a cursor representing the entity at the given source location, or
2873  * a NULL cursor if no such entity can be found.
2874  */
2875 CINDEX_LINKAGE CXCursor clang_getCursor(CXTranslationUnit, CXSourceLocation);
2876 
2877 /**
2878  * \brief Retrieve the physical location of the source constructor referenced
2879  * by the given cursor.
2880  *
2881  * The location of a declaration is typically the location of the name of that
2882  * declaration, where the name of that declaration would occur if it is
2883  * unnamed, or some keyword that introduces that particular declaration.
2884  * The location of a reference is where that reference occurs within the
2885  * source code.
2886  */
2887 CINDEX_LINKAGE CXSourceLocation clang_getCursorLocation(CXCursor);
2888 
2889 /**
2890  * \brief Retrieve the physical extent of the source construct referenced by
2891  * the given cursor.
2892  *
2893  * The extent of a cursor starts with the file/line/column pointing at the
2894  * first character within the source construct that the cursor refers to and
2895  * ends with the last character within that source construct. For a
2896  * declaration, the extent covers the declaration itself. For a reference,
2897  * the extent covers the location of the reference (e.g., where the referenced
2898  * entity was actually used).
2899  */
2900 CINDEX_LINKAGE CXSourceRange clang_getCursorExtent(CXCursor);
2901 
2902 /**
2903  * @}
2904  */
2905 
2906 /**
2907  * \defgroup CINDEX_TYPES Type information for CXCursors
2908  *
2909  * @{
2910  */
2911 
2912 /**
2913  * \brief Describes the kind of type
2914  */
2915 enum CXTypeKind {
2916   /**
2917    * \brief Represents an invalid type (e.g., where no type is available).
2918    */
2919   CXType_Invalid = 0,
2920 
2921   /**
2922    * \brief A type whose specific kind is not exposed via this
2923    * interface.
2924    */
2925   CXType_Unexposed = 1,
2926 
2927   /* Builtin types */
2928   CXType_Void = 2,
2929   CXType_Bool = 3,
2930   CXType_Char_U = 4,
2931   CXType_UChar = 5,
2932   CXType_Char16 = 6,
2933   CXType_Char32 = 7,
2934   CXType_UShort = 8,
2935   CXType_UInt = 9,
2936   CXType_ULong = 10,
2937   CXType_ULongLong = 11,
2938   CXType_UInt128 = 12,
2939   CXType_Char_S = 13,
2940   CXType_SChar = 14,
2941   CXType_WChar = 15,
2942   CXType_Short = 16,
2943   CXType_Int = 17,
2944   CXType_Long = 18,
2945   CXType_LongLong = 19,
2946   CXType_Int128 = 20,
2947   CXType_Float = 21,
2948   CXType_Double = 22,
2949   CXType_LongDouble = 23,
2950   CXType_NullPtr = 24,
2951   CXType_Overload = 25,
2952   CXType_Dependent = 26,
2953   CXType_ObjCId = 27,
2954   CXType_ObjCClass = 28,
2955   CXType_ObjCSel = 29,
2956   CXType_Float128 = 30,
2957   CXType_FirstBuiltin = CXType_Void,
2958   CXType_LastBuiltin  = CXType_ObjCSel,
2959 
2960   CXType_Complex = 100,
2961   CXType_Pointer = 101,
2962   CXType_BlockPointer = 102,
2963   CXType_LValueReference = 103,
2964   CXType_RValueReference = 104,
2965   CXType_Record = 105,
2966   CXType_Enum = 106,
2967   CXType_Typedef = 107,
2968   CXType_ObjCInterface = 108,
2969   CXType_ObjCObjectPointer = 109,
2970   CXType_FunctionNoProto = 110,
2971   CXType_FunctionProto = 111,
2972   CXType_ConstantArray = 112,
2973   CXType_Vector = 113,
2974   CXType_IncompleteArray = 114,
2975   CXType_VariableArray = 115,
2976   CXType_DependentSizedArray = 116,
2977   CXType_MemberPointer = 117,
2978   CXType_Auto = 118,
2979 
2980   /**
2981    * \brief Represents a type that was referred to using an elaborated type keyword.
2982    *
2983    * E.g., struct S, or via a qualified name, e.g., N::M::type, or both.
2984    */
2985   CXType_Elaborated = 119
2986 };
2987 
2988 /**
2989  * \brief Describes the calling convention of a function type
2990  */
2991 enum CXCallingConv {
2992   CXCallingConv_Default = 0,
2993   CXCallingConv_C = 1,
2994   CXCallingConv_X86StdCall = 2,
2995   CXCallingConv_X86FastCall = 3,
2996   CXCallingConv_X86ThisCall = 4,
2997   CXCallingConv_X86Pascal = 5,
2998   CXCallingConv_AAPCS = 6,
2999   CXCallingConv_AAPCS_VFP = 7,
3000   /* Value 8 was PnaclCall, but it was never used, so it could safely be re-used. */
3001   CXCallingConv_IntelOclBicc = 9,
3002   CXCallingConv_X86_64Win64 = 10,
3003   CXCallingConv_X86_64SysV = 11,
3004   CXCallingConv_X86VectorCall = 12,
3005   CXCallingConv_Swift = 13,
3006   CXCallingConv_PreserveMost = 14,
3007   CXCallingConv_PreserveAll = 15,
3008 
3009   CXCallingConv_Invalid = 100,
3010   CXCallingConv_Unexposed = 200
3011 };
3012 
3013 /**
3014  * \brief The type of an element in the abstract syntax tree.
3015  *
3016  */
3017 typedef struct {
3018   enum CXTypeKind kind;
3019   void *data[2];
3020 } CXType;
3021 
3022 /**
3023  * \brief Retrieve the type of a CXCursor (if any).
3024  */
3025 CINDEX_LINKAGE CXType clang_getCursorType(CXCursor C);
3026 
3027 /**
3028  * \brief Pretty-print the underlying type using the rules of the
3029  * language of the translation unit from which it came.
3030  *
3031  * If the type is invalid, an empty string is returned.
3032  */
3033 CINDEX_LINKAGE CXString clang_getTypeSpelling(CXType CT);
3034 
3035 /**
3036  * \brief Retrieve the underlying type of a typedef declaration.
3037  *
3038  * If the cursor does not reference a typedef declaration, an invalid type is
3039  * returned.
3040  */
3041 CINDEX_LINKAGE CXType clang_getTypedefDeclUnderlyingType(CXCursor C);
3042 
3043 /**
3044  * \brief Retrieve the integer type of an enum declaration.
3045  *
3046  * If the cursor does not reference an enum declaration, an invalid type is
3047  * returned.
3048  */
3049 CINDEX_LINKAGE CXType clang_getEnumDeclIntegerType(CXCursor C);
3050 
3051 /**
3052  * \brief Retrieve the integer value of an enum constant declaration as a signed
3053  *  long long.
3054  *
3055  * If the cursor does not reference an enum constant declaration, LLONG_MIN is returned.
3056  * Since this is also potentially a valid constant value, the kind of the cursor
3057  * must be verified before calling this function.
3058  */
3059 CINDEX_LINKAGE long long clang_getEnumConstantDeclValue(CXCursor C);
3060 
3061 /**
3062  * \brief Retrieve the integer value of an enum constant declaration as an unsigned
3063  *  long long.
3064  *
3065  * If the cursor does not reference an enum constant declaration, ULLONG_MAX is returned.
3066  * Since this is also potentially a valid constant value, the kind of the cursor
3067  * must be verified before calling this function.
3068  */
3069 CINDEX_LINKAGE unsigned long long clang_getEnumConstantDeclUnsignedValue(CXCursor C);
3070 
3071 /**
3072  * \brief Retrieve the bit width of a bit field declaration as an integer.
3073  *
3074  * If a cursor that is not a bit field declaration is passed in, -1 is returned.
3075  */
3076 CINDEX_LINKAGE int clang_getFieldDeclBitWidth(CXCursor C);
3077 
3078 /**
3079  * \brief Retrieve the number of non-variadic arguments associated with a given
3080  * cursor.
3081  *
3082  * The number of arguments can be determined for calls as well as for
3083  * declarations of functions or methods. For other cursors -1 is returned.
3084  */
3085 CINDEX_LINKAGE int clang_Cursor_getNumArguments(CXCursor C);
3086 
3087 /**
3088  * \brief Retrieve the argument cursor of a function or method.
3089  *
3090  * The argument cursor can be determined for calls as well as for declarations
3091  * of functions or methods. For other cursors and for invalid indices, an
3092  * invalid cursor is returned.
3093  */
3094 CINDEX_LINKAGE CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i);
3095 
3096 /**
3097  * \brief Describes the kind of a template argument.
3098  *
3099  * See the definition of llvm::clang::TemplateArgument::ArgKind for full
3100  * element descriptions.
3101  */
3102 enum CXTemplateArgumentKind {
3103   CXTemplateArgumentKind_Null,
3104   CXTemplateArgumentKind_Type,
3105   CXTemplateArgumentKind_Declaration,
3106   CXTemplateArgumentKind_NullPtr,
3107   CXTemplateArgumentKind_Integral,
3108   CXTemplateArgumentKind_Template,
3109   CXTemplateArgumentKind_TemplateExpansion,
3110   CXTemplateArgumentKind_Expression,
3111   CXTemplateArgumentKind_Pack,
3112   /* Indicates an error case, preventing the kind from being deduced. */
3113   CXTemplateArgumentKind_Invalid
3114 };
3115 
3116 /**
3117  *\brief Returns the number of template args of a function decl representing a
3118  * template specialization.
3119  *
3120  * If the argument cursor cannot be converted into a template function
3121  * declaration, -1 is returned.
3122  *
3123  * For example, for the following declaration and specialization:
3124  *   template <typename T, int kInt, bool kBool>
3125  *   void foo() { ... }
3126  *
3127  *   template <>
3128  *   void foo<float, -7, true>();
3129  *
3130  * The value 3 would be returned from this call.
3131  */
3132 CINDEX_LINKAGE int clang_Cursor_getNumTemplateArguments(CXCursor C);
3133 
3134 /**
3135  * \brief Retrieve the kind of the I'th template argument of the CXCursor C.
3136  *
3137  * If the argument CXCursor does not represent a FunctionDecl, an invalid
3138  * template argument kind is returned.
3139  *
3140  * For example, for the following declaration and specialization:
3141  *   template <typename T, int kInt, bool kBool>
3142  *   void foo() { ... }
3143  *
3144  *   template <>
3145  *   void foo<float, -7, true>();
3146  *
3147  * For I = 0, 1, and 2, Type, Integral, and Integral will be returned,
3148  * respectively.
3149  */
3150 CINDEX_LINKAGE enum CXTemplateArgumentKind clang_Cursor_getTemplateArgumentKind(
3151     CXCursor C, unsigned I);
3152 
3153 /**
3154  * \brief Retrieve a CXType representing the type of a TemplateArgument of a
3155  *  function decl representing a template specialization.
3156  *
3157  * If the argument CXCursor does not represent a FunctionDecl whose I'th
3158  * template argument has a kind of CXTemplateArgKind_Integral, an invalid type
3159  * is returned.
3160  *
3161  * For example, for the following declaration and specialization:
3162  *   template <typename T, int kInt, bool kBool>
3163  *   void foo() { ... }
3164  *
3165  *   template <>
3166  *   void foo<float, -7, true>();
3167  *
3168  * If called with I = 0, "float", will be returned.
3169  * Invalid types will be returned for I == 1 or 2.
3170  */
3171 CINDEX_LINKAGE CXType clang_Cursor_getTemplateArgumentType(CXCursor C,
3172                                                            unsigned I);
3173 
3174 /**
3175  * \brief Retrieve the value of an Integral TemplateArgument (of a function
3176  *  decl representing a template specialization) as a signed long long.
3177  *
3178  * It is undefined to call this function on a CXCursor that does not represent a
3179  * FunctionDecl or whose I'th template argument is not an integral value.
3180  *
3181  * For example, for the following declaration and specialization:
3182  *   template <typename T, int kInt, bool kBool>
3183  *   void foo() { ... }
3184  *
3185  *   template <>
3186  *   void foo<float, -7, true>();
3187  *
3188  * If called with I = 1 or 2, -7 or true will be returned, respectively.
3189  * For I == 0, this function's behavior is undefined.
3190  */
3191 CINDEX_LINKAGE long long clang_Cursor_getTemplateArgumentValue(CXCursor C,
3192                                                                unsigned I);
3193 
3194 /**
3195  * \brief Retrieve the value of an Integral TemplateArgument (of a function
3196  *  decl representing a template specialization) as an unsigned long long.
3197  *
3198  * It is undefined to call this function on a CXCursor that does not represent a
3199  * FunctionDecl or whose I'th template argument is not an integral value.
3200  *
3201  * For example, for the following declaration and specialization:
3202  *   template <typename T, int kInt, bool kBool>
3203  *   void foo() { ... }
3204  *
3205  *   template <>
3206  *   void foo<float, 2147483649, true>();
3207  *
3208  * If called with I = 1 or 2, 2147483649 or true will be returned, respectively.
3209  * For I == 0, this function's behavior is undefined.
3210  */
3211 CINDEX_LINKAGE unsigned long long clang_Cursor_getTemplateArgumentUnsignedValue(
3212     CXCursor C, unsigned I);
3213 
3214 /**
3215  * \brief Determine whether two CXTypes represent the same type.
3216  *
3217  * \returns non-zero if the CXTypes represent the same type and
3218  *          zero otherwise.
3219  */
3220 CINDEX_LINKAGE unsigned clang_equalTypes(CXType A, CXType B);
3221 
3222 /**
3223  * \brief Return the canonical type for a CXType.
3224  *
3225  * Clang's type system explicitly models typedefs and all the ways
3226  * a specific type can be represented.  The canonical type is the underlying
3227  * type with all the "sugar" removed.  For example, if 'T' is a typedef
3228  * for 'int', the canonical type for 'T' would be 'int'.
3229  */
3230 CINDEX_LINKAGE CXType clang_getCanonicalType(CXType T);
3231 
3232 /**
3233  * \brief Determine whether a CXType has the "const" qualifier set,
3234  * without looking through typedefs that may have added "const" at a
3235  * different level.
3236  */
3237 CINDEX_LINKAGE unsigned clang_isConstQualifiedType(CXType T);
3238 
3239 /**
3240  * \brief Determine whether a  CXCursor that is a macro, is
3241  * function like.
3242  */
3243 CINDEX_LINKAGE unsigned clang_Cursor_isMacroFunctionLike(CXCursor C);
3244 
3245 /**
3246  * \brief Determine whether a  CXCursor that is a macro, is a
3247  * builtin one.
3248  */
3249 CINDEX_LINKAGE unsigned clang_Cursor_isMacroBuiltin(CXCursor C);
3250 
3251 /**
3252  * \brief Determine whether a  CXCursor that is a function declaration, is an
3253  * inline declaration.
3254  */
3255 CINDEX_LINKAGE unsigned clang_Cursor_isFunctionInlined(CXCursor C);
3256 
3257 /**
3258  * \brief Determine whether a CXType has the "volatile" qualifier set,
3259  * without looking through typedefs that may have added "volatile" at
3260  * a different level.
3261  */
3262 CINDEX_LINKAGE unsigned clang_isVolatileQualifiedType(CXType T);
3263 
3264 /**
3265  * \brief Determine whether a CXType has the "restrict" qualifier set,
3266  * without looking through typedefs that may have added "restrict" at a
3267  * different level.
3268  */
3269 CINDEX_LINKAGE unsigned clang_isRestrictQualifiedType(CXType T);
3270 
3271 /**
3272  * \brief For pointer types, returns the type of the pointee.
3273  */
3274 CINDEX_LINKAGE CXType clang_getPointeeType(CXType T);
3275 
3276 /**
3277  * \brief Return the cursor for the declaration of the given type.
3278  */
3279 CINDEX_LINKAGE CXCursor clang_getTypeDeclaration(CXType T);
3280 
3281 /**
3282  * Returns the Objective-C type encoding for the specified declaration.
3283  */
3284 CINDEX_LINKAGE CXString clang_getDeclObjCTypeEncoding(CXCursor C);
3285 
3286 /**
3287  * Returns the Objective-C type encoding for the specified CXType.
3288  */
3289 CINDEX_LINKAGE CXString clang_Type_getObjCEncoding(CXType type);
3290 
3291 /**
3292  * \brief Retrieve the spelling of a given CXTypeKind.
3293  */
3294 CINDEX_LINKAGE CXString clang_getTypeKindSpelling(enum CXTypeKind K);
3295 
3296 /**
3297  * \brief Retrieve the calling convention associated with a function type.
3298  *
3299  * If a non-function type is passed in, CXCallingConv_Invalid is returned.
3300  */
3301 CINDEX_LINKAGE enum CXCallingConv clang_getFunctionTypeCallingConv(CXType T);
3302 
3303 /**
3304  * \brief Retrieve the return type associated with a function type.
3305  *
3306  * If a non-function type is passed in, an invalid type is returned.
3307  */
3308 CINDEX_LINKAGE CXType clang_getResultType(CXType T);
3309 
3310 /**
3311  * \brief Retrieve the number of non-variadic parameters associated with a
3312  * function type.
3313  *
3314  * If a non-function type is passed in, -1 is returned.
3315  */
3316 CINDEX_LINKAGE int clang_getNumArgTypes(CXType T);
3317 
3318 /**
3319  * \brief Retrieve the type of a parameter of a function type.
3320  *
3321  * If a non-function type is passed in or the function does not have enough
3322  * parameters, an invalid type is returned.
3323  */
3324 CINDEX_LINKAGE CXType clang_getArgType(CXType T, unsigned i);
3325 
3326 /**
3327  * \brief Return 1 if the CXType is a variadic function type, and 0 otherwise.
3328  */
3329 CINDEX_LINKAGE unsigned clang_isFunctionTypeVariadic(CXType T);
3330 
3331 /**
3332  * \brief Retrieve the return type associated with a given cursor.
3333  *
3334  * This only returns a valid type if the cursor refers to a function or method.
3335  */
3336 CINDEX_LINKAGE CXType clang_getCursorResultType(CXCursor C);
3337 
3338 /**
3339  * \brief Return 1 if the CXType is a POD (plain old data) type, and 0
3340  *  otherwise.
3341  */
3342 CINDEX_LINKAGE unsigned clang_isPODType(CXType T);
3343 
3344 /**
3345  * \brief Return the element type of an array, complex, or vector type.
3346  *
3347  * If a type is passed in that is not an array, complex, or vector type,
3348  * an invalid type is returned.
3349  */
3350 CINDEX_LINKAGE CXType clang_getElementType(CXType T);
3351 
3352 /**
3353  * \brief Return the number of elements of an array or vector type.
3354  *
3355  * If a type is passed in that is not an array or vector type,
3356  * -1 is returned.
3357  */
3358 CINDEX_LINKAGE long long clang_getNumElements(CXType T);
3359 
3360 /**
3361  * \brief Return the element type of an array type.
3362  *
3363  * If a non-array type is passed in, an invalid type is returned.
3364  */
3365 CINDEX_LINKAGE CXType clang_getArrayElementType(CXType T);
3366 
3367 /**
3368  * \brief Return the array size of a constant array.
3369  *
3370  * If a non-array type is passed in, -1 is returned.
3371  */
3372 CINDEX_LINKAGE long long clang_getArraySize(CXType T);
3373 
3374 /**
3375  * \brief Retrieve the type named by the qualified-id.
3376  *
3377  * If a non-elaborated type is passed in, an invalid type is returned.
3378  */
3379 CINDEX_LINKAGE CXType clang_Type_getNamedType(CXType T);
3380 
3381 /**
3382  * \brief List the possible error codes for \c clang_Type_getSizeOf,
3383  *   \c clang_Type_getAlignOf, \c clang_Type_getOffsetOf and
3384  *   \c clang_Cursor_getOffsetOf.
3385  *
3386  * A value of this enumeration type can be returned if the target type is not
3387  * a valid argument to sizeof, alignof or offsetof.
3388  */
3389 enum CXTypeLayoutError {
3390   /**
3391    * \brief Type is of kind CXType_Invalid.
3392    */
3393   CXTypeLayoutError_Invalid = -1,
3394   /**
3395    * \brief The type is an incomplete Type.
3396    */
3397   CXTypeLayoutError_Incomplete = -2,
3398   /**
3399    * \brief The type is a dependent Type.
3400    */
3401   CXTypeLayoutError_Dependent = -3,
3402   /**
3403    * \brief The type is not a constant size type.
3404    */
3405   CXTypeLayoutError_NotConstantSize = -4,
3406   /**
3407    * \brief The Field name is not valid for this record.
3408    */
3409   CXTypeLayoutError_InvalidFieldName = -5
3410 };
3411 
3412 /**
3413  * \brief Return the alignment of a type in bytes as per C++[expr.alignof]
3414  *   standard.
3415  *
3416  * If the type declaration is invalid, CXTypeLayoutError_Invalid is returned.
3417  * If the type declaration is an incomplete type, CXTypeLayoutError_Incomplete
3418  *   is returned.
3419  * If the type declaration is a dependent type, CXTypeLayoutError_Dependent is
3420  *   returned.
3421  * If the type declaration is not a constant size type,
3422  *   CXTypeLayoutError_NotConstantSize is returned.
3423  */
3424 CINDEX_LINKAGE long long clang_Type_getAlignOf(CXType T);
3425 
3426 /**
3427  * \brief Return the class type of an member pointer type.
3428  *
3429  * If a non-member-pointer type is passed in, an invalid type is returned.
3430  */
3431 CINDEX_LINKAGE CXType clang_Type_getClassType(CXType T);
3432 
3433 /**
3434  * \brief Return the size of a type in bytes as per C++[expr.sizeof] standard.
3435  *
3436  * If the type declaration is invalid, CXTypeLayoutError_Invalid is returned.
3437  * If the type declaration is an incomplete type, CXTypeLayoutError_Incomplete
3438  *   is returned.
3439  * If the type declaration is a dependent type, CXTypeLayoutError_Dependent is
3440  *   returned.
3441  */
3442 CINDEX_LINKAGE long long clang_Type_getSizeOf(CXType T);
3443 
3444 /**
3445  * \brief Return the offset of a field named S in a record of type T in bits
3446  *   as it would be returned by __offsetof__ as per C++11[18.2p4]
3447  *
3448  * If the cursor is not a record field declaration, CXTypeLayoutError_Invalid
3449  *   is returned.
3450  * If the field's type declaration is an incomplete type,
3451  *   CXTypeLayoutError_Incomplete is returned.
3452  * If the field's type declaration is a dependent type,
3453  *   CXTypeLayoutError_Dependent is returned.
3454  * If the field's name S is not found,
3455  *   CXTypeLayoutError_InvalidFieldName is returned.
3456  */
3457 CINDEX_LINKAGE long long clang_Type_getOffsetOf(CXType T, const char *S);
3458 
3459 /**
3460  * \brief Return the offset of the field represented by the Cursor.
3461  *
3462  * If the cursor is not a field declaration, -1 is returned.
3463  * If the cursor semantic parent is not a record field declaration,
3464  *   CXTypeLayoutError_Invalid is returned.
3465  * If the field's type declaration is an incomplete type,
3466  *   CXTypeLayoutError_Incomplete is returned.
3467  * If the field's type declaration is a dependent type,
3468  *   CXTypeLayoutError_Dependent is returned.
3469  * If the field's name S is not found,
3470  *   CXTypeLayoutError_InvalidFieldName is returned.
3471  */
3472 CINDEX_LINKAGE long long clang_Cursor_getOffsetOfField(CXCursor C);
3473 
3474 /**
3475  * \brief Determine whether the given cursor represents an anonymous record
3476  * declaration.
3477  */
3478 CINDEX_LINKAGE unsigned clang_Cursor_isAnonymous(CXCursor C);
3479 
3480 enum CXRefQualifierKind {
3481   /** \brief No ref-qualifier was provided. */
3482   CXRefQualifier_None = 0,
3483   /** \brief An lvalue ref-qualifier was provided (\c &). */
3484   CXRefQualifier_LValue,
3485   /** \brief An rvalue ref-qualifier was provided (\c &&). */
3486   CXRefQualifier_RValue
3487 };
3488 
3489 /**
3490  * \brief Returns the number of template arguments for given class template
3491  * specialization, or -1 if type \c T is not a class template specialization.
3492  *
3493  * Variadic argument packs count as only one argument, and can not be inspected
3494  * further.
3495  */
3496 CINDEX_LINKAGE int clang_Type_getNumTemplateArguments(CXType T);
3497 
3498 /**
3499  * \brief Returns the type template argument of a template class specialization
3500  * at given index.
3501  *
3502  * This function only returns template type arguments and does not handle
3503  * template template arguments or variadic packs.
3504  */
3505 CINDEX_LINKAGE CXType clang_Type_getTemplateArgumentAsType(CXType T, unsigned i);
3506 
3507 /**
3508  * \brief Retrieve the ref-qualifier kind of a function or method.
3509  *
3510  * The ref-qualifier is returned for C++ functions or methods. For other types
3511  * or non-C++ declarations, CXRefQualifier_None is returned.
3512  */
3513 CINDEX_LINKAGE enum CXRefQualifierKind clang_Type_getCXXRefQualifier(CXType T);
3514 
3515 /**
3516  * \brief Returns non-zero if the cursor specifies a Record member that is a
3517  *   bitfield.
3518  */
3519 CINDEX_LINKAGE unsigned clang_Cursor_isBitField(CXCursor C);
3520 
3521 /**
3522  * \brief Returns 1 if the base class specified by the cursor with kind
3523  *   CX_CXXBaseSpecifier is virtual.
3524  */
3525 CINDEX_LINKAGE unsigned clang_isVirtualBase(CXCursor);
3526 
3527 /**
3528  * \brief Represents the C++ access control level to a base class for a
3529  * cursor with kind CX_CXXBaseSpecifier.
3530  */
3531 enum CX_CXXAccessSpecifier {
3532   CX_CXXInvalidAccessSpecifier,
3533   CX_CXXPublic,
3534   CX_CXXProtected,
3535   CX_CXXPrivate
3536 };
3537 
3538 /**
3539  * \brief Returns the access control level for the referenced object.
3540  *
3541  * If the cursor refers to a C++ declaration, its access control level within its
3542  * parent scope is returned. Otherwise, if the cursor refers to a base specifier or
3543  * access specifier, the specifier itself is returned.
3544  */
3545 CINDEX_LINKAGE enum CX_CXXAccessSpecifier clang_getCXXAccessSpecifier(CXCursor);
3546 
3547 /**
3548  * \brief Represents the storage classes as declared in the source. CX_SC_Invalid
3549  * was added for the case that the passed cursor in not a declaration.
3550  */
3551 enum CX_StorageClass {
3552   CX_SC_Invalid,
3553   CX_SC_None,
3554   CX_SC_Extern,
3555   CX_SC_Static,
3556   CX_SC_PrivateExtern,
3557   CX_SC_OpenCLWorkGroupLocal,
3558   CX_SC_Auto,
3559   CX_SC_Register
3560 };
3561 
3562 /**
3563  * \brief Returns the storage class for a function or variable declaration.
3564  *
3565  * If the passed in Cursor is not a function or variable declaration,
3566  * CX_SC_Invalid is returned else the storage class.
3567  */
3568 CINDEX_LINKAGE enum CX_StorageClass clang_Cursor_getStorageClass(CXCursor);
3569 
3570 /**
3571  * \brief Determine the number of overloaded declarations referenced by a
3572  * \c CXCursor_OverloadedDeclRef cursor.
3573  *
3574  * \param cursor The cursor whose overloaded declarations are being queried.
3575  *
3576  * \returns The number of overloaded declarations referenced by \c cursor. If it
3577  * is not a \c CXCursor_OverloadedDeclRef cursor, returns 0.
3578  */
3579 CINDEX_LINKAGE unsigned clang_getNumOverloadedDecls(CXCursor cursor);
3580 
3581 /**
3582  * \brief Retrieve a cursor for one of the overloaded declarations referenced
3583  * by a \c CXCursor_OverloadedDeclRef cursor.
3584  *
3585  * \param cursor The cursor whose overloaded declarations are being queried.
3586  *
3587  * \param index The zero-based index into the set of overloaded declarations in
3588  * the cursor.
3589  *
3590  * \returns A cursor representing the declaration referenced by the given
3591  * \c cursor at the specified \c index. If the cursor does not have an
3592  * associated set of overloaded declarations, or if the index is out of bounds,
3593  * returns \c clang_getNullCursor();
3594  */
3595 CINDEX_LINKAGE CXCursor clang_getOverloadedDecl(CXCursor cursor,
3596                                                 unsigned index);
3597 
3598 /**
3599  * @}
3600  */
3601 
3602 /**
3603  * \defgroup CINDEX_ATTRIBUTES Information for attributes
3604  *
3605  * @{
3606  */
3607 
3608 /**
3609  * \brief For cursors representing an iboutletcollection attribute,
3610  *  this function returns the collection element type.
3611  *
3612  */
3613 CINDEX_LINKAGE CXType clang_getIBOutletCollectionType(CXCursor);
3614 
3615 /**
3616  * @}
3617  */
3618 
3619 /**
3620  * \defgroup CINDEX_CURSOR_TRAVERSAL Traversing the AST with cursors
3621  *
3622  * These routines provide the ability to traverse the abstract syntax tree
3623  * using cursors.
3624  *
3625  * @{
3626  */
3627 
3628 /**
3629  * \brief Describes how the traversal of the children of a particular
3630  * cursor should proceed after visiting a particular child cursor.
3631  *
3632  * A value of this enumeration type should be returned by each
3633  * \c CXCursorVisitor to indicate how clang_visitChildren() proceed.
3634  */
3635 enum CXChildVisitResult {
3636   /**
3637    * \brief Terminates the cursor traversal.
3638    */
3639   CXChildVisit_Break,
3640   /**
3641    * \brief Continues the cursor traversal with the next sibling of
3642    * the cursor just visited, without visiting its children.
3643    */
3644   CXChildVisit_Continue,
3645   /**
3646    * \brief Recursively traverse the children of this cursor, using
3647    * the same visitor and client data.
3648    */
3649   CXChildVisit_Recurse
3650 };
3651 
3652 /**
3653  * \brief Visitor invoked for each cursor found by a traversal.
3654  *
3655  * This visitor function will be invoked for each cursor found by
3656  * clang_visitCursorChildren(). Its first argument is the cursor being
3657  * visited, its second argument is the parent visitor for that cursor,
3658  * and its third argument is the client data provided to
3659  * clang_visitCursorChildren().
3660  *
3661  * The visitor should return one of the \c CXChildVisitResult values
3662  * to direct clang_visitCursorChildren().
3663  */
3664 typedef enum CXChildVisitResult (*CXCursorVisitor)(CXCursor cursor,
3665                                                    CXCursor parent,
3666                                                    CXClientData client_data);
3667 
3668 /**
3669  * \brief Visit the children of a particular cursor.
3670  *
3671  * This function visits all the direct children of the given cursor,
3672  * invoking the given \p visitor function with the cursors of each
3673  * visited child. The traversal may be recursive, if the visitor returns
3674  * \c CXChildVisit_Recurse. The traversal may also be ended prematurely, if
3675  * the visitor returns \c CXChildVisit_Break.
3676  *
3677  * \param parent the cursor whose child may be visited. All kinds of
3678  * cursors can be visited, including invalid cursors (which, by
3679  * definition, have no children).
3680  *
3681  * \param visitor the visitor function that will be invoked for each
3682  * child of \p parent.
3683  *
3684  * \param client_data pointer data supplied by the client, which will
3685  * be passed to the visitor each time it is invoked.
3686  *
3687  * \returns a non-zero value if the traversal was terminated
3688  * prematurely by the visitor returning \c CXChildVisit_Break.
3689  */
3690 CINDEX_LINKAGE unsigned clang_visitChildren(CXCursor parent,
3691                                             CXCursorVisitor visitor,
3692                                             CXClientData client_data);
3693 #ifdef __has_feature
3694 #  if __has_feature(blocks)
3695 /**
3696  * \brief Visitor invoked for each cursor found by a traversal.
3697  *
3698  * This visitor block will be invoked for each cursor found by
3699  * clang_visitChildrenWithBlock(). Its first argument is the cursor being
3700  * visited, its second argument is the parent visitor for that cursor.
3701  *
3702  * The visitor should return one of the \c CXChildVisitResult values
3703  * to direct clang_visitChildrenWithBlock().
3704  */
3705 typedef enum CXChildVisitResult
3706      (^CXCursorVisitorBlock)(CXCursor cursor, CXCursor parent);
3707 
3708 /**
3709  * Visits the children of a cursor using the specified block.  Behaves
3710  * identically to clang_visitChildren() in all other respects.
3711  */
3712 CINDEX_LINKAGE unsigned clang_visitChildrenWithBlock(CXCursor parent,
3713                                                     CXCursorVisitorBlock block);
3714 #  endif
3715 #endif
3716 
3717 /**
3718  * @}
3719  */
3720 
3721 /**
3722  * \defgroup CINDEX_CURSOR_XREF Cross-referencing in the AST
3723  *
3724  * These routines provide the ability to determine references within and
3725  * across translation units, by providing the names of the entities referenced
3726  * by cursors, follow reference cursors to the declarations they reference,
3727  * and associate declarations with their definitions.
3728  *
3729  * @{
3730  */
3731 
3732 /**
3733  * \brief Retrieve a Unified Symbol Resolution (USR) for the entity referenced
3734  * by the given cursor.
3735  *
3736  * A Unified Symbol Resolution (USR) is a string that identifies a particular
3737  * entity (function, class, variable, etc.) within a program. USRs can be
3738  * compared across translation units to determine, e.g., when references in
3739  * one translation refer to an entity defined in another translation unit.
3740  */
3741 CINDEX_LINKAGE CXString clang_getCursorUSR(CXCursor);
3742 
3743 /**
3744  * \brief Construct a USR for a specified Objective-C class.
3745  */
3746 CINDEX_LINKAGE CXString clang_constructUSR_ObjCClass(const char *class_name);
3747 
3748 /**
3749  * \brief Construct a USR for a specified Objective-C category.
3750  */
3751 CINDEX_LINKAGE CXString
3752   clang_constructUSR_ObjCCategory(const char *class_name,
3753                                  const char *category_name);
3754 
3755 /**
3756  * \brief Construct a USR for a specified Objective-C protocol.
3757  */
3758 CINDEX_LINKAGE CXString
3759   clang_constructUSR_ObjCProtocol(const char *protocol_name);
3760 
3761 /**
3762  * \brief Construct a USR for a specified Objective-C instance variable and
3763  *   the USR for its containing class.
3764  */
3765 CINDEX_LINKAGE CXString clang_constructUSR_ObjCIvar(const char *name,
3766                                                     CXString classUSR);
3767 
3768 /**
3769  * \brief Construct a USR for a specified Objective-C method and
3770  *   the USR for its containing class.
3771  */
3772 CINDEX_LINKAGE CXString clang_constructUSR_ObjCMethod(const char *name,
3773                                                       unsigned isInstanceMethod,
3774                                                       CXString classUSR);
3775 
3776 /**
3777  * \brief Construct a USR for a specified Objective-C property and the USR
3778  *  for its containing class.
3779  */
3780 CINDEX_LINKAGE CXString clang_constructUSR_ObjCProperty(const char *property,
3781                                                         CXString classUSR);
3782 
3783 /**
3784  * \brief Retrieve a name for the entity referenced by this cursor.
3785  */
3786 CINDEX_LINKAGE CXString clang_getCursorSpelling(CXCursor);
3787 
3788 /**
3789  * \brief Retrieve a range for a piece that forms the cursors spelling name.
3790  * Most of the times there is only one range for the complete spelling but for
3791  * Objective-C methods and Objective-C message expressions, there are multiple
3792  * pieces for each selector identifier.
3793  *
3794  * \param pieceIndex the index of the spelling name piece. If this is greater
3795  * than the actual number of pieces, it will return a NULL (invalid) range.
3796  *
3797  * \param options Reserved.
3798  */
3799 CINDEX_LINKAGE CXSourceRange clang_Cursor_getSpellingNameRange(CXCursor,
3800                                                           unsigned pieceIndex,
3801                                                           unsigned options);
3802 
3803 /**
3804  * \brief Retrieve the display name for the entity referenced by this cursor.
3805  *
3806  * The display name contains extra information that helps identify the cursor,
3807  * such as the parameters of a function or template or the arguments of a
3808  * class template specialization.
3809  */
3810 CINDEX_LINKAGE CXString clang_getCursorDisplayName(CXCursor);
3811 
3812 /** \brief For a cursor that is a reference, retrieve a cursor representing the
3813  * entity that it references.
3814  *
3815  * Reference cursors refer to other entities in the AST. For example, an
3816  * Objective-C superclass reference cursor refers to an Objective-C class.
3817  * This function produces the cursor for the Objective-C class from the
3818  * cursor for the superclass reference. If the input cursor is a declaration or
3819  * definition, it returns that declaration or definition unchanged.
3820  * Otherwise, returns the NULL cursor.
3821  */
3822 CINDEX_LINKAGE CXCursor clang_getCursorReferenced(CXCursor);
3823 
3824 /**
3825  *  \brief For a cursor that is either a reference to or a declaration
3826  *  of some entity, retrieve a cursor that describes the definition of
3827  *  that entity.
3828  *
3829  *  Some entities can be declared multiple times within a translation
3830  *  unit, but only one of those declarations can also be a
3831  *  definition. For example, given:
3832  *
3833  *  \code
3834  *  int f(int, int);
3835  *  int g(int x, int y) { return f(x, y); }
3836  *  int f(int a, int b) { return a + b; }
3837  *  int f(int, int);
3838  *  \endcode
3839  *
3840  *  there are three declarations of the function "f", but only the
3841  *  second one is a definition. The clang_getCursorDefinition()
3842  *  function will take any cursor pointing to a declaration of "f"
3843  *  (the first or fourth lines of the example) or a cursor referenced
3844  *  that uses "f" (the call to "f' inside "g") and will return a
3845  *  declaration cursor pointing to the definition (the second "f"
3846  *  declaration).
3847  *
3848  *  If given a cursor for which there is no corresponding definition,
3849  *  e.g., because there is no definition of that entity within this
3850  *  translation unit, returns a NULL cursor.
3851  */
3852 CINDEX_LINKAGE CXCursor clang_getCursorDefinition(CXCursor);
3853 
3854 /**
3855  * \brief Determine whether the declaration pointed to by this cursor
3856  * is also a definition of that entity.
3857  */
3858 CINDEX_LINKAGE unsigned clang_isCursorDefinition(CXCursor);
3859 
3860 /**
3861  * \brief Retrieve the canonical cursor corresponding to the given cursor.
3862  *
3863  * In the C family of languages, many kinds of entities can be declared several
3864  * times within a single translation unit. For example, a structure type can
3865  * be forward-declared (possibly multiple times) and later defined:
3866  *
3867  * \code
3868  * struct X;
3869  * struct X;
3870  * struct X {
3871  *   int member;
3872  * };
3873  * \endcode
3874  *
3875  * The declarations and the definition of \c X are represented by three
3876  * different cursors, all of which are declarations of the same underlying
3877  * entity. One of these cursor is considered the "canonical" cursor, which
3878  * is effectively the representative for the underlying entity. One can
3879  * determine if two cursors are declarations of the same underlying entity by
3880  * comparing their canonical cursors.
3881  *
3882  * \returns The canonical cursor for the entity referred to by the given cursor.
3883  */
3884 CINDEX_LINKAGE CXCursor clang_getCanonicalCursor(CXCursor);
3885 
3886 /**
3887  * \brief If the cursor points to a selector identifier in an Objective-C
3888  * method or message expression, this returns the selector index.
3889  *
3890  * After getting a cursor with #clang_getCursor, this can be called to
3891  * determine if the location points to a selector identifier.
3892  *
3893  * \returns The selector index if the cursor is an Objective-C method or message
3894  * expression and the cursor is pointing to a selector identifier, or -1
3895  * otherwise.
3896  */
3897 CINDEX_LINKAGE int clang_Cursor_getObjCSelectorIndex(CXCursor);
3898 
3899 /**
3900  * \brief Given a cursor pointing to a C++ method call or an Objective-C
3901  * message, returns non-zero if the method/message is "dynamic", meaning:
3902  *
3903  * For a C++ method: the call is virtual.
3904  * For an Objective-C message: the receiver is an object instance, not 'super'
3905  * or a specific class.
3906  *
3907  * If the method/message is "static" or the cursor does not point to a
3908  * method/message, it will return zero.
3909  */
3910 CINDEX_LINKAGE int clang_Cursor_isDynamicCall(CXCursor C);
3911 
3912 /**
3913  * \brief Given a cursor pointing to an Objective-C message, returns the CXType
3914  * of the receiver.
3915  */
3916 CINDEX_LINKAGE CXType clang_Cursor_getReceiverType(CXCursor C);
3917 
3918 /**
3919  * \brief Property attributes for a \c CXCursor_ObjCPropertyDecl.
3920  */
3921 typedef enum {
3922   CXObjCPropertyAttr_noattr    = 0x00,
3923   CXObjCPropertyAttr_readonly  = 0x01,
3924   CXObjCPropertyAttr_getter    = 0x02,
3925   CXObjCPropertyAttr_assign    = 0x04,
3926   CXObjCPropertyAttr_readwrite = 0x08,
3927   CXObjCPropertyAttr_retain    = 0x10,
3928   CXObjCPropertyAttr_copy      = 0x20,
3929   CXObjCPropertyAttr_nonatomic = 0x40,
3930   CXObjCPropertyAttr_setter    = 0x80,
3931   CXObjCPropertyAttr_atomic    = 0x100,
3932   CXObjCPropertyAttr_weak      = 0x200,
3933   CXObjCPropertyAttr_strong    = 0x400,
3934   CXObjCPropertyAttr_unsafe_unretained = 0x800,
3935   CXObjCPropertyAttr_class = 0x1000
3936 } CXObjCPropertyAttrKind;
3937 
3938 /**
3939  * \brief Given a cursor that represents a property declaration, return the
3940  * associated property attributes. The bits are formed from
3941  * \c CXObjCPropertyAttrKind.
3942  *
3943  * \param reserved Reserved for future use, pass 0.
3944  */
3945 CINDEX_LINKAGE unsigned clang_Cursor_getObjCPropertyAttributes(CXCursor C,
3946                                                              unsigned reserved);
3947 
3948 /**
3949  * \brief 'Qualifiers' written next to the return and parameter types in
3950  * Objective-C method declarations.
3951  */
3952 typedef enum {
3953   CXObjCDeclQualifier_None = 0x0,
3954   CXObjCDeclQualifier_In = 0x1,
3955   CXObjCDeclQualifier_Inout = 0x2,
3956   CXObjCDeclQualifier_Out = 0x4,
3957   CXObjCDeclQualifier_Bycopy = 0x8,
3958   CXObjCDeclQualifier_Byref = 0x10,
3959   CXObjCDeclQualifier_Oneway = 0x20
3960 } CXObjCDeclQualifierKind;
3961 
3962 /**
3963  * \brief Given a cursor that represents an Objective-C method or parameter
3964  * declaration, return the associated Objective-C qualifiers for the return
3965  * type or the parameter respectively. The bits are formed from
3966  * CXObjCDeclQualifierKind.
3967  */
3968 CINDEX_LINKAGE unsigned clang_Cursor_getObjCDeclQualifiers(CXCursor C);
3969 
3970 /**
3971  * \brief Given a cursor that represents an Objective-C method or property
3972  * declaration, return non-zero if the declaration was affected by "@optional".
3973  * Returns zero if the cursor is not such a declaration or it is "@required".
3974  */
3975 CINDEX_LINKAGE unsigned clang_Cursor_isObjCOptional(CXCursor C);
3976 
3977 /**
3978  * \brief Returns non-zero if the given cursor is a variadic function or method.
3979  */
3980 CINDEX_LINKAGE unsigned clang_Cursor_isVariadic(CXCursor C);
3981 
3982 /**
3983  * \brief Given a cursor that represents a declaration, return the associated
3984  * comment's source range.  The range may include multiple consecutive comments
3985  * with whitespace in between.
3986  */
3987 CINDEX_LINKAGE CXSourceRange clang_Cursor_getCommentRange(CXCursor C);
3988 
3989 /**
3990  * \brief Given a cursor that represents a declaration, return the associated
3991  * comment text, including comment markers.
3992  */
3993 CINDEX_LINKAGE CXString clang_Cursor_getRawCommentText(CXCursor C);
3994 
3995 /**
3996  * \brief Given a cursor that represents a documentable entity (e.g.,
3997  * declaration), return the associated \\brief paragraph; otherwise return the
3998  * first paragraph.
3999  */
4000 CINDEX_LINKAGE CXString clang_Cursor_getBriefCommentText(CXCursor C);
4001 
4002 /**
4003  * @}
4004  */
4005 
4006 /** \defgroup CINDEX_MANGLE Name Mangling API Functions
4007  *
4008  * @{
4009  */
4010 
4011 /**
4012  * \brief Retrieve the CXString representing the mangled name of the cursor.
4013  */
4014 CINDEX_LINKAGE CXString clang_Cursor_getMangling(CXCursor);
4015 
4016 /**
4017  * \brief Retrieve the CXStrings representing the mangled symbols of the C++
4018  * constructor or destructor at the cursor.
4019  */
4020 CINDEX_LINKAGE CXStringSet *clang_Cursor_getCXXManglings(CXCursor);
4021 
4022 /**
4023  * @}
4024  */
4025 
4026 /**
4027  * \defgroup CINDEX_MODULE Module introspection
4028  *
4029  * The functions in this group provide access to information about modules.
4030  *
4031  * @{
4032  */
4033 
4034 typedef void *CXModule;
4035 
4036 /**
4037  * \brief Given a CXCursor_ModuleImportDecl cursor, return the associated module.
4038  */
4039 CINDEX_LINKAGE CXModule clang_Cursor_getModule(CXCursor C);
4040 
4041 /**
4042  * \brief Given a CXFile header file, return the module that contains it, if one
4043  * exists.
4044  */
4045 CINDEX_LINKAGE CXModule clang_getModuleForFile(CXTranslationUnit, CXFile);
4046 
4047 /**
4048  * \param Module a module object.
4049  *
4050  * \returns the module file where the provided module object came from.
4051  */
4052 CINDEX_LINKAGE CXFile clang_Module_getASTFile(CXModule Module);
4053 
4054 /**
4055  * \param Module a module object.
4056  *
4057  * \returns the parent of a sub-module or NULL if the given module is top-level,
4058  * e.g. for 'std.vector' it will return the 'std' module.
4059  */
4060 CINDEX_LINKAGE CXModule clang_Module_getParent(CXModule Module);
4061 
4062 /**
4063  * \param Module a module object.
4064  *
4065  * \returns the name of the module, e.g. for the 'std.vector' sub-module it
4066  * will return "vector".
4067  */
4068 CINDEX_LINKAGE CXString clang_Module_getName(CXModule Module);
4069 
4070 /**
4071  * \param Module a module object.
4072  *
4073  * \returns the full name of the module, e.g. "std.vector".
4074  */
4075 CINDEX_LINKAGE CXString clang_Module_getFullName(CXModule Module);
4076 
4077 /**
4078  * \param Module a module object.
4079  *
4080  * \returns non-zero if the module is a system one.
4081  */
4082 CINDEX_LINKAGE int clang_Module_isSystem(CXModule Module);
4083 
4084 /**
4085  * \param Module a module object.
4086  *
4087  * \returns the number of top level headers associated with this module.
4088  */
4089 CINDEX_LINKAGE unsigned clang_Module_getNumTopLevelHeaders(CXTranslationUnit,
4090                                                            CXModule Module);
4091 
4092 /**
4093  * \param Module a module object.
4094  *
4095  * \param Index top level header index (zero-based).
4096  *
4097  * \returns the specified top level header associated with the module.
4098  */
4099 CINDEX_LINKAGE
4100 CXFile clang_Module_getTopLevelHeader(CXTranslationUnit,
4101                                       CXModule Module, unsigned Index);
4102 
4103 /**
4104  * @}
4105  */
4106 
4107 /**
4108  * \defgroup CINDEX_CPP C++ AST introspection
4109  *
4110  * The routines in this group provide access information in the ASTs specific
4111  * to C++ language features.
4112  *
4113  * @{
4114  */
4115 
4116 /**
4117  * \brief Determine if a C++ constructor is a converting constructor.
4118  */
4119 CINDEX_LINKAGE unsigned clang_CXXConstructor_isConvertingConstructor(CXCursor C);
4120 
4121 /**
4122  * \brief Determine if a C++ constructor is a copy constructor.
4123  */
4124 CINDEX_LINKAGE unsigned clang_CXXConstructor_isCopyConstructor(CXCursor C);
4125 
4126 /**
4127  * \brief Determine if a C++ constructor is the default constructor.
4128  */
4129 CINDEX_LINKAGE unsigned clang_CXXConstructor_isDefaultConstructor(CXCursor C);
4130 
4131 /**
4132  * \brief Determine if a C++ constructor is a move constructor.
4133  */
4134 CINDEX_LINKAGE unsigned clang_CXXConstructor_isMoveConstructor(CXCursor C);
4135 
4136 /**
4137  * \brief Determine if a C++ field is declared 'mutable'.
4138  */
4139 CINDEX_LINKAGE unsigned clang_CXXField_isMutable(CXCursor C);
4140 
4141 /**
4142  * \brief Determine if a C++ method is declared '= default'.
4143  */
4144 CINDEX_LINKAGE unsigned clang_CXXMethod_isDefaulted(CXCursor C);
4145 
4146 /**
4147  * \brief Determine if a C++ member function or member function template is
4148  * pure virtual.
4149  */
4150 CINDEX_LINKAGE unsigned clang_CXXMethod_isPureVirtual(CXCursor C);
4151 
4152 /**
4153  * \brief Determine if a C++ member function or member function template is
4154  * declared 'static'.
4155  */
4156 CINDEX_LINKAGE unsigned clang_CXXMethod_isStatic(CXCursor C);
4157 
4158 /**
4159  * \brief Determine if a C++ member function or member function template is
4160  * explicitly declared 'virtual' or if it overrides a virtual method from
4161  * one of the base classes.
4162  */
4163 CINDEX_LINKAGE unsigned clang_CXXMethod_isVirtual(CXCursor C);
4164 
4165 /**
4166  * \brief Determine if a C++ member function or member function template is
4167  * declared 'const'.
4168  */
4169 CINDEX_LINKAGE unsigned clang_CXXMethod_isConst(CXCursor C);
4170 
4171 /**
4172  * \brief Given a cursor that represents a template, determine
4173  * the cursor kind of the specializations would be generated by instantiating
4174  * the template.
4175  *
4176  * This routine can be used to determine what flavor of function template,
4177  * class template, or class template partial specialization is stored in the
4178  * cursor. For example, it can describe whether a class template cursor is
4179  * declared with "struct", "class" or "union".
4180  *
4181  * \param C The cursor to query. This cursor should represent a template
4182  * declaration.
4183  *
4184  * \returns The cursor kind of the specializations that would be generated
4185  * by instantiating the template \p C. If \p C is not a template, returns
4186  * \c CXCursor_NoDeclFound.
4187  */
4188 CINDEX_LINKAGE enum CXCursorKind clang_getTemplateCursorKind(CXCursor C);
4189 
4190 /**
4191  * \brief Given a cursor that may represent a specialization or instantiation
4192  * of a template, retrieve the cursor that represents the template that it
4193  * specializes or from which it was instantiated.
4194  *
4195  * This routine determines the template involved both for explicit
4196  * specializations of templates and for implicit instantiations of the template,
4197  * both of which are referred to as "specializations". For a class template
4198  * specialization (e.g., \c std::vector<bool>), this routine will return
4199  * either the primary template (\c std::vector) or, if the specialization was
4200  * instantiated from a class template partial specialization, the class template
4201  * partial specialization. For a class template partial specialization and a
4202  * function template specialization (including instantiations), this
4203  * this routine will return the specialized template.
4204  *
4205  * For members of a class template (e.g., member functions, member classes, or
4206  * static data members), returns the specialized or instantiated member.
4207  * Although not strictly "templates" in the C++ language, members of class
4208  * templates have the same notions of specializations and instantiations that
4209  * templates do, so this routine treats them similarly.
4210  *
4211  * \param C A cursor that may be a specialization of a template or a member
4212  * of a template.
4213  *
4214  * \returns If the given cursor is a specialization or instantiation of a
4215  * template or a member thereof, the template or member that it specializes or
4216  * from which it was instantiated. Otherwise, returns a NULL cursor.
4217  */
4218 CINDEX_LINKAGE CXCursor clang_getSpecializedCursorTemplate(CXCursor C);
4219 
4220 /**
4221  * \brief Given a cursor that references something else, return the source range
4222  * covering that reference.
4223  *
4224  * \param C A cursor pointing to a member reference, a declaration reference, or
4225  * an operator call.
4226  * \param NameFlags A bitset with three independent flags:
4227  * CXNameRange_WantQualifier, CXNameRange_WantTemplateArgs, and
4228  * CXNameRange_WantSinglePiece.
4229  * \param PieceIndex For contiguous names or when passing the flag
4230  * CXNameRange_WantSinglePiece, only one piece with index 0 is
4231  * available. When the CXNameRange_WantSinglePiece flag is not passed for a
4232  * non-contiguous names, this index can be used to retrieve the individual
4233  * pieces of the name. See also CXNameRange_WantSinglePiece.
4234  *
4235  * \returns The piece of the name pointed to by the given cursor. If there is no
4236  * name, or if the PieceIndex is out-of-range, a null-cursor will be returned.
4237  */
4238 CINDEX_LINKAGE CXSourceRange clang_getCursorReferenceNameRange(CXCursor C,
4239                                                 unsigned NameFlags,
4240                                                 unsigned PieceIndex);
4241 
4242 enum CXNameRefFlags {
4243   /**
4244    * \brief Include the nested-name-specifier, e.g. Foo:: in x.Foo::y, in the
4245    * range.
4246    */
4247   CXNameRange_WantQualifier = 0x1,
4248 
4249   /**
4250    * \brief Include the explicit template arguments, e.g. \<int> in x.f<int>,
4251    * in the range.
4252    */
4253   CXNameRange_WantTemplateArgs = 0x2,
4254 
4255   /**
4256    * \brief If the name is non-contiguous, return the full spanning range.
4257    *
4258    * Non-contiguous names occur in Objective-C when a selector with two or more
4259    * parameters is used, or in C++ when using an operator:
4260    * \code
4261    * [object doSomething:here withValue:there]; // Objective-C
4262    * return some_vector[1]; // C++
4263    * \endcode
4264    */
4265   CXNameRange_WantSinglePiece = 0x4
4266 };
4267 
4268 /**
4269  * @}
4270  */
4271 
4272 /**
4273  * \defgroup CINDEX_LEX Token extraction and manipulation
4274  *
4275  * The routines in this group provide access to the tokens within a
4276  * translation unit, along with a semantic mapping of those tokens to
4277  * their corresponding cursors.
4278  *
4279  * @{
4280  */
4281 
4282 /**
4283  * \brief Describes a kind of token.
4284  */
4285 typedef enum CXTokenKind {
4286   /**
4287    * \brief A token that contains some kind of punctuation.
4288    */
4289   CXToken_Punctuation,
4290 
4291   /**
4292    * \brief A language keyword.
4293    */
4294   CXToken_Keyword,
4295 
4296   /**
4297    * \brief An identifier (that is not a keyword).
4298    */
4299   CXToken_Identifier,
4300 
4301   /**
4302    * \brief A numeric, string, or character literal.
4303    */
4304   CXToken_Literal,
4305 
4306   /**
4307    * \brief A comment.
4308    */
4309   CXToken_Comment
4310 } CXTokenKind;
4311 
4312 /**
4313  * \brief Describes a single preprocessing token.
4314  */
4315 typedef struct {
4316   unsigned int_data[4];
4317   void *ptr_data;
4318 } CXToken;
4319 
4320 /**
4321  * \brief Determine the kind of the given token.
4322  */
4323 CINDEX_LINKAGE CXTokenKind clang_getTokenKind(CXToken);
4324 
4325 /**
4326  * \brief Determine the spelling of the given token.
4327  *
4328  * The spelling of a token is the textual representation of that token, e.g.,
4329  * the text of an identifier or keyword.
4330  */
4331 CINDEX_LINKAGE CXString clang_getTokenSpelling(CXTranslationUnit, CXToken);
4332 
4333 /**
4334  * \brief Retrieve the source location of the given token.
4335  */
4336 CINDEX_LINKAGE CXSourceLocation clang_getTokenLocation(CXTranslationUnit,
4337                                                        CXToken);
4338 
4339 /**
4340  * \brief Retrieve a source range that covers the given token.
4341  */
4342 CINDEX_LINKAGE CXSourceRange clang_getTokenExtent(CXTranslationUnit, CXToken);
4343 
4344 /**
4345  * \brief Tokenize the source code described by the given range into raw
4346  * lexical tokens.
4347  *
4348  * \param TU the translation unit whose text is being tokenized.
4349  *
4350  * \param Range the source range in which text should be tokenized. All of the
4351  * tokens produced by tokenization will fall within this source range,
4352  *
4353  * \param Tokens this pointer will be set to point to the array of tokens
4354  * that occur within the given source range. The returned pointer must be
4355  * freed with clang_disposeTokens() before the translation unit is destroyed.
4356  *
4357  * \param NumTokens will be set to the number of tokens in the \c *Tokens
4358  * array.
4359  *
4360  */
4361 CINDEX_LINKAGE void clang_tokenize(CXTranslationUnit TU, CXSourceRange Range,
4362                                    CXToken **Tokens, unsigned *NumTokens);
4363 
4364 /**
4365  * \brief Annotate the given set of tokens by providing cursors for each token
4366  * that can be mapped to a specific entity within the abstract syntax tree.
4367  *
4368  * This token-annotation routine is equivalent to invoking
4369  * clang_getCursor() for the source locations of each of the
4370  * tokens. The cursors provided are filtered, so that only those
4371  * cursors that have a direct correspondence to the token are
4372  * accepted. For example, given a function call \c f(x),
4373  * clang_getCursor() would provide the following cursors:
4374  *
4375  *   * when the cursor is over the 'f', a DeclRefExpr cursor referring to 'f'.
4376  *   * when the cursor is over the '(' or the ')', a CallExpr referring to 'f'.
4377  *   * when the cursor is over the 'x', a DeclRefExpr cursor referring to 'x'.
4378  *
4379  * Only the first and last of these cursors will occur within the
4380  * annotate, since the tokens "f" and "x' directly refer to a function
4381  * and a variable, respectively, but the parentheses are just a small
4382  * part of the full syntax of the function call expression, which is
4383  * not provided as an annotation.
4384  *
4385  * \param TU the translation unit that owns the given tokens.
4386  *
4387  * \param Tokens the set of tokens to annotate.
4388  *
4389  * \param NumTokens the number of tokens in \p Tokens.
4390  *
4391  * \param Cursors an array of \p NumTokens cursors, whose contents will be
4392  * replaced with the cursors corresponding to each token.
4393  */
4394 CINDEX_LINKAGE void clang_annotateTokens(CXTranslationUnit TU,
4395                                          CXToken *Tokens, unsigned NumTokens,
4396                                          CXCursor *Cursors);
4397 
4398 /**
4399  * \brief Free the given set of tokens.
4400  */
4401 CINDEX_LINKAGE void clang_disposeTokens(CXTranslationUnit TU,
4402                                         CXToken *Tokens, unsigned NumTokens);
4403 
4404 /**
4405  * @}
4406  */
4407 
4408 /**
4409  * \defgroup CINDEX_DEBUG Debugging facilities
4410  *
4411  * These routines are used for testing and debugging, only, and should not
4412  * be relied upon.
4413  *
4414  * @{
4415  */
4416 
4417 /* for debug/testing */
4418 CINDEX_LINKAGE CXString clang_getCursorKindSpelling(enum CXCursorKind Kind);
4419 CINDEX_LINKAGE void clang_getDefinitionSpellingAndExtent(CXCursor,
4420                                           const char **startBuf,
4421                                           const char **endBuf,
4422                                           unsigned *startLine,
4423                                           unsigned *startColumn,
4424                                           unsigned *endLine,
4425                                           unsigned *endColumn);
4426 CINDEX_LINKAGE void clang_enableStackTraces(void);
4427 CINDEX_LINKAGE void clang_executeOnThread(void (*fn)(void*), void *user_data,
4428                                           unsigned stack_size);
4429 
4430 /**
4431  * @}
4432  */
4433 
4434 /**
4435  * \defgroup CINDEX_CODE_COMPLET Code completion
4436  *
4437  * Code completion involves taking an (incomplete) source file, along with
4438  * knowledge of where the user is actively editing that file, and suggesting
4439  * syntactically- and semantically-valid constructs that the user might want to
4440  * use at that particular point in the source code. These data structures and
4441  * routines provide support for code completion.
4442  *
4443  * @{
4444  */
4445 
4446 /**
4447  * \brief A semantic string that describes a code-completion result.
4448  *
4449  * A semantic string that describes the formatting of a code-completion
4450  * result as a single "template" of text that should be inserted into the
4451  * source buffer when a particular code-completion result is selected.
4452  * Each semantic string is made up of some number of "chunks", each of which
4453  * contains some text along with a description of what that text means, e.g.,
4454  * the name of the entity being referenced, whether the text chunk is part of
4455  * the template, or whether it is a "placeholder" that the user should replace
4456  * with actual code,of a specific kind. See \c CXCompletionChunkKind for a
4457  * description of the different kinds of chunks.
4458  */
4459 typedef void *CXCompletionString;
4460 
4461 /**
4462  * \brief A single result of code completion.
4463  */
4464 typedef struct {
4465   /**
4466    * \brief The kind of entity that this completion refers to.
4467    *
4468    * The cursor kind will be a macro, keyword, or a declaration (one of the
4469    * *Decl cursor kinds), describing the entity that the completion is
4470    * referring to.
4471    *
4472    * \todo In the future, we would like to provide a full cursor, to allow
4473    * the client to extract additional information from declaration.
4474    */
4475   enum CXCursorKind CursorKind;
4476 
4477   /**
4478    * \brief The code-completion string that describes how to insert this
4479    * code-completion result into the editing buffer.
4480    */
4481   CXCompletionString CompletionString;
4482 } CXCompletionResult;
4483 
4484 /**
4485  * \brief Describes a single piece of text within a code-completion string.
4486  *
4487  * Each "chunk" within a code-completion string (\c CXCompletionString) is
4488  * either a piece of text with a specific "kind" that describes how that text
4489  * should be interpreted by the client or is another completion string.
4490  */
4491 enum CXCompletionChunkKind {
4492   /**
4493    * \brief A code-completion string that describes "optional" text that
4494    * could be a part of the template (but is not required).
4495    *
4496    * The Optional chunk is the only kind of chunk that has a code-completion
4497    * string for its representation, which is accessible via
4498    * \c clang_getCompletionChunkCompletionString(). The code-completion string
4499    * describes an additional part of the template that is completely optional.
4500    * For example, optional chunks can be used to describe the placeholders for
4501    * arguments that match up with defaulted function parameters, e.g. given:
4502    *
4503    * \code
4504    * void f(int x, float y = 3.14, double z = 2.71828);
4505    * \endcode
4506    *
4507    * The code-completion string for this function would contain:
4508    *   - a TypedText chunk for "f".
4509    *   - a LeftParen chunk for "(".
4510    *   - a Placeholder chunk for "int x"
4511    *   - an Optional chunk containing the remaining defaulted arguments, e.g.,
4512    *       - a Comma chunk for ","
4513    *       - a Placeholder chunk for "float y"
4514    *       - an Optional chunk containing the last defaulted argument:
4515    *           - a Comma chunk for ","
4516    *           - a Placeholder chunk for "double z"
4517    *   - a RightParen chunk for ")"
4518    *
4519    * There are many ways to handle Optional chunks. Two simple approaches are:
4520    *   - Completely ignore optional chunks, in which case the template for the
4521    *     function "f" would only include the first parameter ("int x").
4522    *   - Fully expand all optional chunks, in which case the template for the
4523    *     function "f" would have all of the parameters.
4524    */
4525   CXCompletionChunk_Optional,
4526   /**
4527    * \brief Text that a user would be expected to type to get this
4528    * code-completion result.
4529    *
4530    * There will be exactly one "typed text" chunk in a semantic string, which
4531    * will typically provide the spelling of a keyword or the name of a
4532    * declaration that could be used at the current code point. Clients are
4533    * expected to filter the code-completion results based on the text in this
4534    * chunk.
4535    */
4536   CXCompletionChunk_TypedText,
4537   /**
4538    * \brief Text that should be inserted as part of a code-completion result.
4539    *
4540    * A "text" chunk represents text that is part of the template to be
4541    * inserted into user code should this particular code-completion result
4542    * be selected.
4543    */
4544   CXCompletionChunk_Text,
4545   /**
4546    * \brief Placeholder text that should be replaced by the user.
4547    *
4548    * A "placeholder" chunk marks a place where the user should insert text
4549    * into the code-completion template. For example, placeholders might mark
4550    * the function parameters for a function declaration, to indicate that the
4551    * user should provide arguments for each of those parameters. The actual
4552    * text in a placeholder is a suggestion for the text to display before
4553    * the user replaces the placeholder with real code.
4554    */
4555   CXCompletionChunk_Placeholder,
4556   /**
4557    * \brief Informative text that should be displayed but never inserted as
4558    * part of the template.
4559    *
4560    * An "informative" chunk contains annotations that can be displayed to
4561    * help the user decide whether a particular code-completion result is the
4562    * right option, but which is not part of the actual template to be inserted
4563    * by code completion.
4564    */
4565   CXCompletionChunk_Informative,
4566   /**
4567    * \brief Text that describes the current parameter when code-completion is
4568    * referring to function call, message send, or template specialization.
4569    *
4570    * A "current parameter" chunk occurs when code-completion is providing
4571    * information about a parameter corresponding to the argument at the
4572    * code-completion point. For example, given a function
4573    *
4574    * \code
4575    * int add(int x, int y);
4576    * \endcode
4577    *
4578    * and the source code \c add(, where the code-completion point is after the
4579    * "(", the code-completion string will contain a "current parameter" chunk
4580    * for "int x", indicating that the current argument will initialize that
4581    * parameter. After typing further, to \c add(17, (where the code-completion
4582    * point is after the ","), the code-completion string will contain a
4583    * "current paremeter" chunk to "int y".
4584    */
4585   CXCompletionChunk_CurrentParameter,
4586   /**
4587    * \brief A left parenthesis ('('), used to initiate a function call or
4588    * signal the beginning of a function parameter list.
4589    */
4590   CXCompletionChunk_LeftParen,
4591   /**
4592    * \brief A right parenthesis (')'), used to finish a function call or
4593    * signal the end of a function parameter list.
4594    */
4595   CXCompletionChunk_RightParen,
4596   /**
4597    * \brief A left bracket ('[').
4598    */
4599   CXCompletionChunk_LeftBracket,
4600   /**
4601    * \brief A right bracket (']').
4602    */
4603   CXCompletionChunk_RightBracket,
4604   /**
4605    * \brief A left brace ('{').
4606    */
4607   CXCompletionChunk_LeftBrace,
4608   /**
4609    * \brief A right brace ('}').
4610    */
4611   CXCompletionChunk_RightBrace,
4612   /**
4613    * \brief A left angle bracket ('<').
4614    */
4615   CXCompletionChunk_LeftAngle,
4616   /**
4617    * \brief A right angle bracket ('>').
4618    */
4619   CXCompletionChunk_RightAngle,
4620   /**
4621    * \brief A comma separator (',').
4622    */
4623   CXCompletionChunk_Comma,
4624   /**
4625    * \brief Text that specifies the result type of a given result.
4626    *
4627    * This special kind of informative chunk is not meant to be inserted into
4628    * the text buffer. Rather, it is meant to illustrate the type that an
4629    * expression using the given completion string would have.
4630    */
4631   CXCompletionChunk_ResultType,
4632   /**
4633    * \brief A colon (':').
4634    */
4635   CXCompletionChunk_Colon,
4636   /**
4637    * \brief A semicolon (';').
4638    */
4639   CXCompletionChunk_SemiColon,
4640   /**
4641    * \brief An '=' sign.
4642    */
4643   CXCompletionChunk_Equal,
4644   /**
4645    * Horizontal space (' ').
4646    */
4647   CXCompletionChunk_HorizontalSpace,
4648   /**
4649    * Vertical space ('\n'), after which it is generally a good idea to
4650    * perform indentation.
4651    */
4652   CXCompletionChunk_VerticalSpace
4653 };
4654 
4655 /**
4656  * \brief Determine the kind of a particular chunk within a completion string.
4657  *
4658  * \param completion_string the completion string to query.
4659  *
4660  * \param chunk_number the 0-based index of the chunk in the completion string.
4661  *
4662  * \returns the kind of the chunk at the index \c chunk_number.
4663  */
4664 CINDEX_LINKAGE enum CXCompletionChunkKind
4665 clang_getCompletionChunkKind(CXCompletionString completion_string,
4666                              unsigned chunk_number);
4667 
4668 /**
4669  * \brief Retrieve the text associated with a particular chunk within a
4670  * completion string.
4671  *
4672  * \param completion_string the completion string to query.
4673  *
4674  * \param chunk_number the 0-based index of the chunk in the completion string.
4675  *
4676  * \returns the text associated with the chunk at index \c chunk_number.
4677  */
4678 CINDEX_LINKAGE CXString
4679 clang_getCompletionChunkText(CXCompletionString completion_string,
4680                              unsigned chunk_number);
4681 
4682 /**
4683  * \brief Retrieve the completion string associated with a particular chunk
4684  * within a completion string.
4685  *
4686  * \param completion_string the completion string to query.
4687  *
4688  * \param chunk_number the 0-based index of the chunk in the completion string.
4689  *
4690  * \returns the completion string associated with the chunk at index
4691  * \c chunk_number.
4692  */
4693 CINDEX_LINKAGE CXCompletionString
4694 clang_getCompletionChunkCompletionString(CXCompletionString completion_string,
4695                                          unsigned chunk_number);
4696 
4697 /**
4698  * \brief Retrieve the number of chunks in the given code-completion string.
4699  */
4700 CINDEX_LINKAGE unsigned
4701 clang_getNumCompletionChunks(CXCompletionString completion_string);
4702 
4703 /**
4704  * \brief Determine the priority of this code completion.
4705  *
4706  * The priority of a code completion indicates how likely it is that this
4707  * particular completion is the completion that the user will select. The
4708  * priority is selected by various internal heuristics.
4709  *
4710  * \param completion_string The completion string to query.
4711  *
4712  * \returns The priority of this completion string. Smaller values indicate
4713  * higher-priority (more likely) completions.
4714  */
4715 CINDEX_LINKAGE unsigned
4716 clang_getCompletionPriority(CXCompletionString completion_string);
4717 
4718 /**
4719  * \brief Determine the availability of the entity that this code-completion
4720  * string refers to.
4721  *
4722  * \param completion_string The completion string to query.
4723  *
4724  * \returns The availability of the completion string.
4725  */
4726 CINDEX_LINKAGE enum CXAvailabilityKind
4727 clang_getCompletionAvailability(CXCompletionString completion_string);
4728 
4729 /**
4730  * \brief Retrieve the number of annotations associated with the given
4731  * completion string.
4732  *
4733  * \param completion_string the completion string to query.
4734  *
4735  * \returns the number of annotations associated with the given completion
4736  * string.
4737  */
4738 CINDEX_LINKAGE unsigned
4739 clang_getCompletionNumAnnotations(CXCompletionString completion_string);
4740 
4741 /**
4742  * \brief Retrieve the annotation associated with the given completion string.
4743  *
4744  * \param completion_string the completion string to query.
4745  *
4746  * \param annotation_number the 0-based index of the annotation of the
4747  * completion string.
4748  *
4749  * \returns annotation string associated with the completion at index
4750  * \c annotation_number, or a NULL string if that annotation is not available.
4751  */
4752 CINDEX_LINKAGE CXString
4753 clang_getCompletionAnnotation(CXCompletionString completion_string,
4754                               unsigned annotation_number);
4755 
4756 /**
4757  * \brief Retrieve the parent context of the given completion string.
4758  *
4759  * The parent context of a completion string is the semantic parent of
4760  * the declaration (if any) that the code completion represents. For example,
4761  * a code completion for an Objective-C method would have the method's class
4762  * or protocol as its context.
4763  *
4764  * \param completion_string The code completion string whose parent is
4765  * being queried.
4766  *
4767  * \param kind DEPRECATED: always set to CXCursor_NotImplemented if non-NULL.
4768  *
4769  * \returns The name of the completion parent, e.g., "NSObject" if
4770  * the completion string represents a method in the NSObject class.
4771  */
4772 CINDEX_LINKAGE CXString
4773 clang_getCompletionParent(CXCompletionString completion_string,
4774                           enum CXCursorKind *kind);
4775 
4776 /**
4777  * \brief Retrieve the brief documentation comment attached to the declaration
4778  * that corresponds to the given completion string.
4779  */
4780 CINDEX_LINKAGE CXString
4781 clang_getCompletionBriefComment(CXCompletionString completion_string);
4782 
4783 /**
4784  * \brief Retrieve a completion string for an arbitrary declaration or macro
4785  * definition cursor.
4786  *
4787  * \param cursor The cursor to query.
4788  *
4789  * \returns A non-context-sensitive completion string for declaration and macro
4790  * definition cursors, or NULL for other kinds of cursors.
4791  */
4792 CINDEX_LINKAGE CXCompletionString
4793 clang_getCursorCompletionString(CXCursor cursor);
4794 
4795 /**
4796  * \brief Contains the results of code-completion.
4797  *
4798  * This data structure contains the results of code completion, as
4799  * produced by \c clang_codeCompleteAt(). Its contents must be freed by
4800  * \c clang_disposeCodeCompleteResults.
4801  */
4802 typedef struct {
4803   /**
4804    * \brief The code-completion results.
4805    */
4806   CXCompletionResult *Results;
4807 
4808   /**
4809    * \brief The number of code-completion results stored in the
4810    * \c Results array.
4811    */
4812   unsigned NumResults;
4813 } CXCodeCompleteResults;
4814 
4815 /**
4816  * \brief Flags that can be passed to \c clang_codeCompleteAt() to
4817  * modify its behavior.
4818  *
4819  * The enumerators in this enumeration can be bitwise-OR'd together to
4820  * provide multiple options to \c clang_codeCompleteAt().
4821  */
4822 enum CXCodeComplete_Flags {
4823   /**
4824    * \brief Whether to include macros within the set of code
4825    * completions returned.
4826    */
4827   CXCodeComplete_IncludeMacros = 0x01,
4828 
4829   /**
4830    * \brief Whether to include code patterns for language constructs
4831    * within the set of code completions, e.g., for loops.
4832    */
4833   CXCodeComplete_IncludeCodePatterns = 0x02,
4834 
4835   /**
4836    * \brief Whether to include brief documentation within the set of code
4837    * completions returned.
4838    */
4839   CXCodeComplete_IncludeBriefComments = 0x04
4840 };
4841 
4842 /**
4843  * \brief Bits that represent the context under which completion is occurring.
4844  *
4845  * The enumerators in this enumeration may be bitwise-OR'd together if multiple
4846  * contexts are occurring simultaneously.
4847  */
4848 enum CXCompletionContext {
4849   /**
4850    * \brief The context for completions is unexposed, as only Clang results
4851    * should be included. (This is equivalent to having no context bits set.)
4852    */
4853   CXCompletionContext_Unexposed = 0,
4854 
4855   /**
4856    * \brief Completions for any possible type should be included in the results.
4857    */
4858   CXCompletionContext_AnyType = 1 << 0,
4859 
4860   /**
4861    * \brief Completions for any possible value (variables, function calls, etc.)
4862    * should be included in the results.
4863    */
4864   CXCompletionContext_AnyValue = 1 << 1,
4865   /**
4866    * \brief Completions for values that resolve to an Objective-C object should
4867    * be included in the results.
4868    */
4869   CXCompletionContext_ObjCObjectValue = 1 << 2,
4870   /**
4871    * \brief Completions for values that resolve to an Objective-C selector
4872    * should be included in the results.
4873    */
4874   CXCompletionContext_ObjCSelectorValue = 1 << 3,
4875   /**
4876    * \brief Completions for values that resolve to a C++ class type should be
4877    * included in the results.
4878    */
4879   CXCompletionContext_CXXClassTypeValue = 1 << 4,
4880 
4881   /**
4882    * \brief Completions for fields of the member being accessed using the dot
4883    * operator should be included in the results.
4884    */
4885   CXCompletionContext_DotMemberAccess = 1 << 5,
4886   /**
4887    * \brief Completions for fields of the member being accessed using the arrow
4888    * operator should be included in the results.
4889    */
4890   CXCompletionContext_ArrowMemberAccess = 1 << 6,
4891   /**
4892    * \brief Completions for properties of the Objective-C object being accessed
4893    * using the dot operator should be included in the results.
4894    */
4895   CXCompletionContext_ObjCPropertyAccess = 1 << 7,
4896 
4897   /**
4898    * \brief Completions for enum tags should be included in the results.
4899    */
4900   CXCompletionContext_EnumTag = 1 << 8,
4901   /**
4902    * \brief Completions for union tags should be included in the results.
4903    */
4904   CXCompletionContext_UnionTag = 1 << 9,
4905   /**
4906    * \brief Completions for struct tags should be included in the results.
4907    */
4908   CXCompletionContext_StructTag = 1 << 10,
4909 
4910   /**
4911    * \brief Completions for C++ class names should be included in the results.
4912    */
4913   CXCompletionContext_ClassTag = 1 << 11,
4914   /**
4915    * \brief Completions for C++ namespaces and namespace aliases should be
4916    * included in the results.
4917    */
4918   CXCompletionContext_Namespace = 1 << 12,
4919   /**
4920    * \brief Completions for C++ nested name specifiers should be included in
4921    * the results.
4922    */
4923   CXCompletionContext_NestedNameSpecifier = 1 << 13,
4924 
4925   /**
4926    * \brief Completions for Objective-C interfaces (classes) should be included
4927    * in the results.
4928    */
4929   CXCompletionContext_ObjCInterface = 1 << 14,
4930   /**
4931    * \brief Completions for Objective-C protocols should be included in
4932    * the results.
4933    */
4934   CXCompletionContext_ObjCProtocol = 1 << 15,
4935   /**
4936    * \brief Completions for Objective-C categories should be included in
4937    * the results.
4938    */
4939   CXCompletionContext_ObjCCategory = 1 << 16,
4940   /**
4941    * \brief Completions for Objective-C instance messages should be included
4942    * in the results.
4943    */
4944   CXCompletionContext_ObjCInstanceMessage = 1 << 17,
4945   /**
4946    * \brief Completions for Objective-C class messages should be included in
4947    * the results.
4948    */
4949   CXCompletionContext_ObjCClassMessage = 1 << 18,
4950   /**
4951    * \brief Completions for Objective-C selector names should be included in
4952    * the results.
4953    */
4954   CXCompletionContext_ObjCSelectorName = 1 << 19,
4955 
4956   /**
4957    * \brief Completions for preprocessor macro names should be included in
4958    * the results.
4959    */
4960   CXCompletionContext_MacroName = 1 << 20,
4961 
4962   /**
4963    * \brief Natural language completions should be included in the results.
4964    */
4965   CXCompletionContext_NaturalLanguage = 1 << 21,
4966 
4967   /**
4968    * \brief The current context is unknown, so set all contexts.
4969    */
4970   CXCompletionContext_Unknown = ((1 << 22) - 1)
4971 };
4972 
4973 /**
4974  * \brief Returns a default set of code-completion options that can be
4975  * passed to\c clang_codeCompleteAt().
4976  */
4977 CINDEX_LINKAGE unsigned clang_defaultCodeCompleteOptions(void);
4978 
4979 /**
4980  * \brief Perform code completion at a given location in a translation unit.
4981  *
4982  * This function performs code completion at a particular file, line, and
4983  * column within source code, providing results that suggest potential
4984  * code snippets based on the context of the completion. The basic model
4985  * for code completion is that Clang will parse a complete source file,
4986  * performing syntax checking up to the location where code-completion has
4987  * been requested. At that point, a special code-completion token is passed
4988  * to the parser, which recognizes this token and determines, based on the
4989  * current location in the C/Objective-C/C++ grammar and the state of
4990  * semantic analysis, what completions to provide. These completions are
4991  * returned via a new \c CXCodeCompleteResults structure.
4992  *
4993  * Code completion itself is meant to be triggered by the client when the
4994  * user types punctuation characters or whitespace, at which point the
4995  * code-completion location will coincide with the cursor. For example, if \c p
4996  * is a pointer, code-completion might be triggered after the "-" and then
4997  * after the ">" in \c p->. When the code-completion location is afer the ">",
4998  * the completion results will provide, e.g., the members of the struct that
4999  * "p" points to. The client is responsible for placing the cursor at the
5000  * beginning of the token currently being typed, then filtering the results
5001  * based on the contents of the token. For example, when code-completing for
5002  * the expression \c p->get, the client should provide the location just after
5003  * the ">" (e.g., pointing at the "g") to this code-completion hook. Then, the
5004  * client can filter the results based on the current token text ("get"), only
5005  * showing those results that start with "get". The intent of this interface
5006  * is to separate the relatively high-latency acquisition of code-completion
5007  * results from the filtering of results on a per-character basis, which must
5008  * have a lower latency.
5009  *
5010  * \param TU The translation unit in which code-completion should
5011  * occur. The source files for this translation unit need not be
5012  * completely up-to-date (and the contents of those source files may
5013  * be overridden via \p unsaved_files). Cursors referring into the
5014  * translation unit may be invalidated by this invocation.
5015  *
5016  * \param complete_filename The name of the source file where code
5017  * completion should be performed. This filename may be any file
5018  * included in the translation unit.
5019  *
5020  * \param complete_line The line at which code-completion should occur.
5021  *
5022  * \param complete_column The column at which code-completion should occur.
5023  * Note that the column should point just after the syntactic construct that
5024  * initiated code completion, and not in the middle of a lexical token.
5025  *
5026  * \param unsaved_files the Files that have not yet been saved to disk
5027  * but may be required for parsing or code completion, including the
5028  * contents of those files.  The contents and name of these files (as
5029  * specified by CXUnsavedFile) are copied when necessary, so the
5030  * client only needs to guarantee their validity until the call to
5031  * this function returns.
5032  *
5033  * \param num_unsaved_files The number of unsaved file entries in \p
5034  * unsaved_files.
5035  *
5036  * \param options Extra options that control the behavior of code
5037  * completion, expressed as a bitwise OR of the enumerators of the
5038  * CXCodeComplete_Flags enumeration. The
5039  * \c clang_defaultCodeCompleteOptions() function returns a default set
5040  * of code-completion options.
5041  *
5042  * \returns If successful, a new \c CXCodeCompleteResults structure
5043  * containing code-completion results, which should eventually be
5044  * freed with \c clang_disposeCodeCompleteResults(). If code
5045  * completion fails, returns NULL.
5046  */
5047 CINDEX_LINKAGE
5048 CXCodeCompleteResults *clang_codeCompleteAt(CXTranslationUnit TU,
5049                                             const char *complete_filename,
5050                                             unsigned complete_line,
5051                                             unsigned complete_column,
5052                                             struct CXUnsavedFile *unsaved_files,
5053                                             unsigned num_unsaved_files,
5054                                             unsigned options);
5055 
5056 /**
5057  * \brief Sort the code-completion results in case-insensitive alphabetical
5058  * order.
5059  *
5060  * \param Results The set of results to sort.
5061  * \param NumResults The number of results in \p Results.
5062  */
5063 CINDEX_LINKAGE
5064 void clang_sortCodeCompletionResults(CXCompletionResult *Results,
5065                                      unsigned NumResults);
5066 
5067 /**
5068  * \brief Free the given set of code-completion results.
5069  */
5070 CINDEX_LINKAGE
5071 void clang_disposeCodeCompleteResults(CXCodeCompleteResults *Results);
5072 
5073 /**
5074  * \brief Determine the number of diagnostics produced prior to the
5075  * location where code completion was performed.
5076  */
5077 CINDEX_LINKAGE
5078 unsigned clang_codeCompleteGetNumDiagnostics(CXCodeCompleteResults *Results);
5079 
5080 /**
5081  * \brief Retrieve a diagnostic associated with the given code completion.
5082  *
5083  * \param Results the code completion results to query.
5084  * \param Index the zero-based diagnostic number to retrieve.
5085  *
5086  * \returns the requested diagnostic. This diagnostic must be freed
5087  * via a call to \c clang_disposeDiagnostic().
5088  */
5089 CINDEX_LINKAGE
5090 CXDiagnostic clang_codeCompleteGetDiagnostic(CXCodeCompleteResults *Results,
5091                                              unsigned Index);
5092 
5093 /**
5094  * \brief Determines what completions are appropriate for the context
5095  * the given code completion.
5096  *
5097  * \param Results the code completion results to query
5098  *
5099  * \returns the kinds of completions that are appropriate for use
5100  * along with the given code completion results.
5101  */
5102 CINDEX_LINKAGE
5103 unsigned long long clang_codeCompleteGetContexts(
5104                                                 CXCodeCompleteResults *Results);
5105 
5106 /**
5107  * \brief Returns the cursor kind for the container for the current code
5108  * completion context. The container is only guaranteed to be set for
5109  * contexts where a container exists (i.e. member accesses or Objective-C
5110  * message sends); if there is not a container, this function will return
5111  * CXCursor_InvalidCode.
5112  *
5113  * \param Results the code completion results to query
5114  *
5115  * \param IsIncomplete on return, this value will be false if Clang has complete
5116  * information about the container. If Clang does not have complete
5117  * information, this value will be true.
5118  *
5119  * \returns the container kind, or CXCursor_InvalidCode if there is not a
5120  * container
5121  */
5122 CINDEX_LINKAGE
5123 enum CXCursorKind clang_codeCompleteGetContainerKind(
5124                                                  CXCodeCompleteResults *Results,
5125                                                      unsigned *IsIncomplete);
5126 
5127 /**
5128  * \brief Returns the USR for the container for the current code completion
5129  * context. If there is not a container for the current context, this
5130  * function will return the empty string.
5131  *
5132  * \param Results the code completion results to query
5133  *
5134  * \returns the USR for the container
5135  */
5136 CINDEX_LINKAGE
5137 CXString clang_codeCompleteGetContainerUSR(CXCodeCompleteResults *Results);
5138 
5139 /**
5140  * \brief Returns the currently-entered selector for an Objective-C message
5141  * send, formatted like "initWithFoo:bar:". Only guaranteed to return a
5142  * non-empty string for CXCompletionContext_ObjCInstanceMessage and
5143  * CXCompletionContext_ObjCClassMessage.
5144  *
5145  * \param Results the code completion results to query
5146  *
5147  * \returns the selector (or partial selector) that has been entered thus far
5148  * for an Objective-C message send.
5149  */
5150 CINDEX_LINKAGE
5151 CXString clang_codeCompleteGetObjCSelector(CXCodeCompleteResults *Results);
5152 
5153 /**
5154  * @}
5155  */
5156 
5157 /**
5158  * \defgroup CINDEX_MISC Miscellaneous utility functions
5159  *
5160  * @{
5161  */
5162 
5163 /**
5164  * \brief Return a version string, suitable for showing to a user, but not
5165  *        intended to be parsed (the format is not guaranteed to be stable).
5166  */
5167 CINDEX_LINKAGE CXString clang_getClangVersion(void);
5168 
5169 /**
5170  * \brief Enable/disable crash recovery.
5171  *
5172  * \param isEnabled Flag to indicate if crash recovery is enabled.  A non-zero
5173  *        value enables crash recovery, while 0 disables it.
5174  */
5175 CINDEX_LINKAGE void clang_toggleCrashRecovery(unsigned isEnabled);
5176 
5177  /**
5178   * \brief Visitor invoked for each file in a translation unit
5179   *        (used with clang_getInclusions()).
5180   *
5181   * This visitor function will be invoked by clang_getInclusions() for each
5182   * file included (either at the top-level or by \#include directives) within
5183   * a translation unit.  The first argument is the file being included, and
5184   * the second and third arguments provide the inclusion stack.  The
5185   * array is sorted in order of immediate inclusion.  For example,
5186   * the first element refers to the location that included 'included_file'.
5187   */
5188 typedef void (*CXInclusionVisitor)(CXFile included_file,
5189                                    CXSourceLocation* inclusion_stack,
5190                                    unsigned include_len,
5191                                    CXClientData client_data);
5192 
5193 /**
5194  * \brief Visit the set of preprocessor inclusions in a translation unit.
5195  *   The visitor function is called with the provided data for every included
5196  *   file.  This does not include headers included by the PCH file (unless one
5197  *   is inspecting the inclusions in the PCH file itself).
5198  */
5199 CINDEX_LINKAGE void clang_getInclusions(CXTranslationUnit tu,
5200                                         CXInclusionVisitor visitor,
5201                                         CXClientData client_data);
5202 
5203 typedef enum {
5204   CXEval_Int = 1 ,
5205   CXEval_Float = 2,
5206   CXEval_ObjCStrLiteral = 3,
5207   CXEval_StrLiteral = 4,
5208   CXEval_CFStr = 5,
5209   CXEval_Other = 6,
5210 
5211   CXEval_UnExposed = 0
5212 
5213 } CXEvalResultKind ;
5214 
5215 /**
5216  * \brief Evaluation result of a cursor
5217  */
5218 typedef void * CXEvalResult;
5219 
5220 /**
5221  * \brief If cursor is a statement declaration tries to evaluate the
5222  * statement and if its variable, tries to evaluate its initializer,
5223  * into its corresponding type.
5224  */
5225 CINDEX_LINKAGE CXEvalResult clang_Cursor_Evaluate(CXCursor C);
5226 
5227 /**
5228  * \brief Returns the kind of the evaluated result.
5229  */
5230 CINDEX_LINKAGE CXEvalResultKind clang_EvalResult_getKind(CXEvalResult E);
5231 
5232 /**
5233  * \brief Returns the evaluation result as integer if the
5234  * kind is Int.
5235  */
5236 CINDEX_LINKAGE int clang_EvalResult_getAsInt(CXEvalResult E);
5237 
5238 /**
5239  * \brief Returns the evaluation result as double if the
5240  * kind is double.
5241  */
5242 CINDEX_LINKAGE double clang_EvalResult_getAsDouble(CXEvalResult E);
5243 
5244 /**
5245  * \brief Returns the evaluation result as a constant string if the
5246  * kind is other than Int or float. User must not free this pointer,
5247  * instead call clang_EvalResult_dispose on the CXEvalResult returned
5248  * by clang_Cursor_Evaluate.
5249  */
5250 CINDEX_LINKAGE const char* clang_EvalResult_getAsStr(CXEvalResult E);
5251 
5252 /**
5253  * \brief Disposes the created Eval memory.
5254  */
5255 CINDEX_LINKAGE void clang_EvalResult_dispose(CXEvalResult E);
5256 /**
5257  * @}
5258  */
5259 
5260 /** \defgroup CINDEX_REMAPPING Remapping functions
5261  *
5262  * @{
5263  */
5264 
5265 /**
5266  * \brief A remapping of original source files and their translated files.
5267  */
5268 typedef void *CXRemapping;
5269 
5270 /**
5271  * \brief Retrieve a remapping.
5272  *
5273  * \param path the path that contains metadata about remappings.
5274  *
5275  * \returns the requested remapping. This remapping must be freed
5276  * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
5277  */
5278 CINDEX_LINKAGE CXRemapping clang_getRemappings(const char *path);
5279 
5280 /**
5281  * \brief Retrieve a remapping.
5282  *
5283  * \param filePaths pointer to an array of file paths containing remapping info.
5284  *
5285  * \param numFiles number of file paths.
5286  *
5287  * \returns the requested remapping. This remapping must be freed
5288  * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
5289  */
5290 CINDEX_LINKAGE
5291 CXRemapping clang_getRemappingsFromFileList(const char **filePaths,
5292                                             unsigned numFiles);
5293 
5294 /**
5295  * \brief Determine the number of remappings.
5296  */
5297 CINDEX_LINKAGE unsigned clang_remap_getNumFiles(CXRemapping);
5298 
5299 /**
5300  * \brief Get the original and the associated filename from the remapping.
5301  *
5302  * \param original If non-NULL, will be set to the original filename.
5303  *
5304  * \param transformed If non-NULL, will be set to the filename that the original
5305  * is associated with.
5306  */
5307 CINDEX_LINKAGE void clang_remap_getFilenames(CXRemapping, unsigned index,
5308                                      CXString *original, CXString *transformed);
5309 
5310 /**
5311  * \brief Dispose the remapping.
5312  */
5313 CINDEX_LINKAGE void clang_remap_dispose(CXRemapping);
5314 
5315 /**
5316  * @}
5317  */
5318 
5319 /** \defgroup CINDEX_HIGH Higher level API functions
5320  *
5321  * @{
5322  */
5323 
5324 enum CXVisitorResult {
5325   CXVisit_Break,
5326   CXVisit_Continue
5327 };
5328 
5329 typedef struct CXCursorAndRangeVisitor {
5330   void *context;
5331   enum CXVisitorResult (*visit)(void *context, CXCursor, CXSourceRange);
5332 } CXCursorAndRangeVisitor;
5333 
5334 typedef enum {
5335   /**
5336    * \brief Function returned successfully.
5337    */
5338   CXResult_Success = 0,
5339   /**
5340    * \brief One of the parameters was invalid for the function.
5341    */
5342   CXResult_Invalid = 1,
5343   /**
5344    * \brief The function was terminated by a callback (e.g. it returned
5345    * CXVisit_Break)
5346    */
5347   CXResult_VisitBreak = 2
5348 
5349 } CXResult;
5350 
5351 /**
5352  * \brief Find references of a declaration in a specific file.
5353  *
5354  * \param cursor pointing to a declaration or a reference of one.
5355  *
5356  * \param file to search for references.
5357  *
5358  * \param visitor callback that will receive pairs of CXCursor/CXSourceRange for
5359  * each reference found.
5360  * The CXSourceRange will point inside the file; if the reference is inside
5361  * a macro (and not a macro argument) the CXSourceRange will be invalid.
5362  *
5363  * \returns one of the CXResult enumerators.
5364  */
5365 CINDEX_LINKAGE CXResult clang_findReferencesInFile(CXCursor cursor, CXFile file,
5366                                                CXCursorAndRangeVisitor visitor);
5367 
5368 /**
5369  * \brief Find #import/#include directives in a specific file.
5370  *
5371  * \param TU translation unit containing the file to query.
5372  *
5373  * \param file to search for #import/#include directives.
5374  *
5375  * \param visitor callback that will receive pairs of CXCursor/CXSourceRange for
5376  * each directive found.
5377  *
5378  * \returns one of the CXResult enumerators.
5379  */
5380 CINDEX_LINKAGE CXResult clang_findIncludesInFile(CXTranslationUnit TU,
5381                                                  CXFile file,
5382                                               CXCursorAndRangeVisitor visitor);
5383 
5384 #ifdef __has_feature
5385 #  if __has_feature(blocks)
5386 
5387 typedef enum CXVisitorResult
5388     (^CXCursorAndRangeVisitorBlock)(CXCursor, CXSourceRange);
5389 
5390 CINDEX_LINKAGE
5391 CXResult clang_findReferencesInFileWithBlock(CXCursor, CXFile,
5392                                              CXCursorAndRangeVisitorBlock);
5393 
5394 CINDEX_LINKAGE
5395 CXResult clang_findIncludesInFileWithBlock(CXTranslationUnit, CXFile,
5396                                            CXCursorAndRangeVisitorBlock);
5397 
5398 #  endif
5399 #endif
5400 
5401 /**
5402  * \brief The client's data object that is associated with a CXFile.
5403  */
5404 typedef void *CXIdxClientFile;
5405 
5406 /**
5407  * \brief The client's data object that is associated with a semantic entity.
5408  */
5409 typedef void *CXIdxClientEntity;
5410 
5411 /**
5412  * \brief The client's data object that is associated with a semantic container
5413  * of entities.
5414  */
5415 typedef void *CXIdxClientContainer;
5416 
5417 /**
5418  * \brief The client's data object that is associated with an AST file (PCH
5419  * or module).
5420  */
5421 typedef void *CXIdxClientASTFile;
5422 
5423 /**
5424  * \brief Source location passed to index callbacks.
5425  */
5426 typedef struct {
5427   void *ptr_data[2];
5428   unsigned int_data;
5429 } CXIdxLoc;
5430 
5431 /**
5432  * \brief Data for ppIncludedFile callback.
5433  */
5434 typedef struct {
5435   /**
5436    * \brief Location of '#' in the \#include/\#import directive.
5437    */
5438   CXIdxLoc hashLoc;
5439   /**
5440    * \brief Filename as written in the \#include/\#import directive.
5441    */
5442   const char *filename;
5443   /**
5444    * \brief The actual file that the \#include/\#import directive resolved to.
5445    */
5446   CXFile file;
5447   int isImport;
5448   int isAngled;
5449   /**
5450    * \brief Non-zero if the directive was automatically turned into a module
5451    * import.
5452    */
5453   int isModuleImport;
5454 } CXIdxIncludedFileInfo;
5455 
5456 /**
5457  * \brief Data for IndexerCallbacks#importedASTFile.
5458  */
5459 typedef struct {
5460   /**
5461    * \brief Top level AST file containing the imported PCH, module or submodule.
5462    */
5463   CXFile file;
5464   /**
5465    * \brief The imported module or NULL if the AST file is a PCH.
5466    */
5467   CXModule module;
5468   /**
5469    * \brief Location where the file is imported. Applicable only for modules.
5470    */
5471   CXIdxLoc loc;
5472   /**
5473    * \brief Non-zero if an inclusion directive was automatically turned into
5474    * a module import. Applicable only for modules.
5475    */
5476   int isImplicit;
5477 
5478 } CXIdxImportedASTFileInfo;
5479 
5480 typedef enum {
5481   CXIdxEntity_Unexposed     = 0,
5482   CXIdxEntity_Typedef       = 1,
5483   CXIdxEntity_Function      = 2,
5484   CXIdxEntity_Variable      = 3,
5485   CXIdxEntity_Field         = 4,
5486   CXIdxEntity_EnumConstant  = 5,
5487 
5488   CXIdxEntity_ObjCClass     = 6,
5489   CXIdxEntity_ObjCProtocol  = 7,
5490   CXIdxEntity_ObjCCategory  = 8,
5491 
5492   CXIdxEntity_ObjCInstanceMethod = 9,
5493   CXIdxEntity_ObjCClassMethod    = 10,
5494   CXIdxEntity_ObjCProperty  = 11,
5495   CXIdxEntity_ObjCIvar      = 12,
5496 
5497   CXIdxEntity_Enum          = 13,
5498   CXIdxEntity_Struct        = 14,
5499   CXIdxEntity_Union         = 15,
5500 
5501   CXIdxEntity_CXXClass              = 16,
5502   CXIdxEntity_CXXNamespace          = 17,
5503   CXIdxEntity_CXXNamespaceAlias     = 18,
5504   CXIdxEntity_CXXStaticVariable     = 19,
5505   CXIdxEntity_CXXStaticMethod       = 20,
5506   CXIdxEntity_CXXInstanceMethod     = 21,
5507   CXIdxEntity_CXXConstructor        = 22,
5508   CXIdxEntity_CXXDestructor         = 23,
5509   CXIdxEntity_CXXConversionFunction = 24,
5510   CXIdxEntity_CXXTypeAlias          = 25,
5511   CXIdxEntity_CXXInterface          = 26
5512 
5513 } CXIdxEntityKind;
5514 
5515 typedef enum {
5516   CXIdxEntityLang_None = 0,
5517   CXIdxEntityLang_C    = 1,
5518   CXIdxEntityLang_ObjC = 2,
5519   CXIdxEntityLang_CXX  = 3
5520 } CXIdxEntityLanguage;
5521 
5522 /**
5523  * \brief Extra C++ template information for an entity. This can apply to:
5524  * CXIdxEntity_Function
5525  * CXIdxEntity_CXXClass
5526  * CXIdxEntity_CXXStaticMethod
5527  * CXIdxEntity_CXXInstanceMethod
5528  * CXIdxEntity_CXXConstructor
5529  * CXIdxEntity_CXXConversionFunction
5530  * CXIdxEntity_CXXTypeAlias
5531  */
5532 typedef enum {
5533   CXIdxEntity_NonTemplate   = 0,
5534   CXIdxEntity_Template      = 1,
5535   CXIdxEntity_TemplatePartialSpecialization = 2,
5536   CXIdxEntity_TemplateSpecialization = 3
5537 } CXIdxEntityCXXTemplateKind;
5538 
5539 typedef enum {
5540   CXIdxAttr_Unexposed     = 0,
5541   CXIdxAttr_IBAction      = 1,
5542   CXIdxAttr_IBOutlet      = 2,
5543   CXIdxAttr_IBOutletCollection = 3
5544 } CXIdxAttrKind;
5545 
5546 typedef struct {
5547   CXIdxAttrKind kind;
5548   CXCursor cursor;
5549   CXIdxLoc loc;
5550 } CXIdxAttrInfo;
5551 
5552 typedef struct {
5553   CXIdxEntityKind kind;
5554   CXIdxEntityCXXTemplateKind templateKind;
5555   CXIdxEntityLanguage lang;
5556   const char *name;
5557   const char *USR;
5558   CXCursor cursor;
5559   const CXIdxAttrInfo *const *attributes;
5560   unsigned numAttributes;
5561 } CXIdxEntityInfo;
5562 
5563 typedef struct {
5564   CXCursor cursor;
5565 } CXIdxContainerInfo;
5566 
5567 typedef struct {
5568   const CXIdxAttrInfo *attrInfo;
5569   const CXIdxEntityInfo *objcClass;
5570   CXCursor classCursor;
5571   CXIdxLoc classLoc;
5572 } CXIdxIBOutletCollectionAttrInfo;
5573 
5574 typedef enum {
5575   CXIdxDeclFlag_Skipped = 0x1
5576 } CXIdxDeclInfoFlags;
5577 
5578 typedef struct {
5579   const CXIdxEntityInfo *entityInfo;
5580   CXCursor cursor;
5581   CXIdxLoc loc;
5582   const CXIdxContainerInfo *semanticContainer;
5583   /**
5584    * \brief Generally same as #semanticContainer but can be different in
5585    * cases like out-of-line C++ member functions.
5586    */
5587   const CXIdxContainerInfo *lexicalContainer;
5588   int isRedeclaration;
5589   int isDefinition;
5590   int isContainer;
5591   const CXIdxContainerInfo *declAsContainer;
5592   /**
5593    * \brief Whether the declaration exists in code or was created implicitly
5594    * by the compiler, e.g. implicit Objective-C methods for properties.
5595    */
5596   int isImplicit;
5597   const CXIdxAttrInfo *const *attributes;
5598   unsigned numAttributes;
5599 
5600   unsigned flags;
5601 
5602 } CXIdxDeclInfo;
5603 
5604 typedef enum {
5605   CXIdxObjCContainer_ForwardRef = 0,
5606   CXIdxObjCContainer_Interface = 1,
5607   CXIdxObjCContainer_Implementation = 2
5608 } CXIdxObjCContainerKind;
5609 
5610 typedef struct {
5611   const CXIdxDeclInfo *declInfo;
5612   CXIdxObjCContainerKind kind;
5613 } CXIdxObjCContainerDeclInfo;
5614 
5615 typedef struct {
5616   const CXIdxEntityInfo *base;
5617   CXCursor cursor;
5618   CXIdxLoc loc;
5619 } CXIdxBaseClassInfo;
5620 
5621 typedef struct {
5622   const CXIdxEntityInfo *protocol;
5623   CXCursor cursor;
5624   CXIdxLoc loc;
5625 } CXIdxObjCProtocolRefInfo;
5626 
5627 typedef struct {
5628   const CXIdxObjCProtocolRefInfo *const *protocols;
5629   unsigned numProtocols;
5630 } CXIdxObjCProtocolRefListInfo;
5631 
5632 typedef struct {
5633   const CXIdxObjCContainerDeclInfo *containerInfo;
5634   const CXIdxBaseClassInfo *superInfo;
5635   const CXIdxObjCProtocolRefListInfo *protocols;
5636 } CXIdxObjCInterfaceDeclInfo;
5637 
5638 typedef struct {
5639   const CXIdxObjCContainerDeclInfo *containerInfo;
5640   const CXIdxEntityInfo *objcClass;
5641   CXCursor classCursor;
5642   CXIdxLoc classLoc;
5643   const CXIdxObjCProtocolRefListInfo *protocols;
5644 } CXIdxObjCCategoryDeclInfo;
5645 
5646 typedef struct {
5647   const CXIdxDeclInfo *declInfo;
5648   const CXIdxEntityInfo *getter;
5649   const CXIdxEntityInfo *setter;
5650 } CXIdxObjCPropertyDeclInfo;
5651 
5652 typedef struct {
5653   const CXIdxDeclInfo *declInfo;
5654   const CXIdxBaseClassInfo *const *bases;
5655   unsigned numBases;
5656 } CXIdxCXXClassDeclInfo;
5657 
5658 /**
5659  * \brief Data for IndexerCallbacks#indexEntityReference.
5660  */
5661 typedef enum {
5662   /**
5663    * \brief The entity is referenced directly in user's code.
5664    */
5665   CXIdxEntityRef_Direct = 1,
5666   /**
5667    * \brief An implicit reference, e.g. a reference of an Objective-C method
5668    * via the dot syntax.
5669    */
5670   CXIdxEntityRef_Implicit = 2
5671 } CXIdxEntityRefKind;
5672 
5673 /**
5674  * \brief Data for IndexerCallbacks#indexEntityReference.
5675  */
5676 typedef struct {
5677   CXIdxEntityRefKind kind;
5678   /**
5679    * \brief Reference cursor.
5680    */
5681   CXCursor cursor;
5682   CXIdxLoc loc;
5683   /**
5684    * \brief The entity that gets referenced.
5685    */
5686   const CXIdxEntityInfo *referencedEntity;
5687   /**
5688    * \brief Immediate "parent" of the reference. For example:
5689    *
5690    * \code
5691    * Foo *var;
5692    * \endcode
5693    *
5694    * The parent of reference of type 'Foo' is the variable 'var'.
5695    * For references inside statement bodies of functions/methods,
5696    * the parentEntity will be the function/method.
5697    */
5698   const CXIdxEntityInfo *parentEntity;
5699   /**
5700    * \brief Lexical container context of the reference.
5701    */
5702   const CXIdxContainerInfo *container;
5703 } CXIdxEntityRefInfo;
5704 
5705 /**
5706  * \brief A group of callbacks used by #clang_indexSourceFile and
5707  * #clang_indexTranslationUnit.
5708  */
5709 typedef struct {
5710   /**
5711    * \brief Called periodically to check whether indexing should be aborted.
5712    * Should return 0 to continue, and non-zero to abort.
5713    */
5714   int (*abortQuery)(CXClientData client_data, void *reserved);
5715 
5716   /**
5717    * \brief Called at the end of indexing; passes the complete diagnostic set.
5718    */
5719   void (*diagnostic)(CXClientData client_data,
5720                      CXDiagnosticSet, void *reserved);
5721 
5722   CXIdxClientFile (*enteredMainFile)(CXClientData client_data,
5723                                      CXFile mainFile, void *reserved);
5724 
5725   /**
5726    * \brief Called when a file gets \#included/\#imported.
5727    */
5728   CXIdxClientFile (*ppIncludedFile)(CXClientData client_data,
5729                                     const CXIdxIncludedFileInfo *);
5730 
5731   /**
5732    * \brief Called when a AST file (PCH or module) gets imported.
5733    *
5734    * AST files will not get indexed (there will not be callbacks to index all
5735    * the entities in an AST file). The recommended action is that, if the AST
5736    * file is not already indexed, to initiate a new indexing job specific to
5737    * the AST file.
5738    */
5739   CXIdxClientASTFile (*importedASTFile)(CXClientData client_data,
5740                                         const CXIdxImportedASTFileInfo *);
5741 
5742   /**
5743    * \brief Called at the beginning of indexing a translation unit.
5744    */
5745   CXIdxClientContainer (*startedTranslationUnit)(CXClientData client_data,
5746                                                  void *reserved);
5747 
5748   void (*indexDeclaration)(CXClientData client_data,
5749                            const CXIdxDeclInfo *);
5750 
5751   /**
5752    * \brief Called to index a reference of an entity.
5753    */
5754   void (*indexEntityReference)(CXClientData client_data,
5755                                const CXIdxEntityRefInfo *);
5756 
5757 } IndexerCallbacks;
5758 
5759 CINDEX_LINKAGE int clang_index_isEntityObjCContainerKind(CXIdxEntityKind);
5760 CINDEX_LINKAGE const CXIdxObjCContainerDeclInfo *
5761 clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *);
5762 
5763 CINDEX_LINKAGE const CXIdxObjCInterfaceDeclInfo *
5764 clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *);
5765 
5766 CINDEX_LINKAGE
5767 const CXIdxObjCCategoryDeclInfo *
5768 clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *);
5769 
5770 CINDEX_LINKAGE const CXIdxObjCProtocolRefListInfo *
5771 clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *);
5772 
5773 CINDEX_LINKAGE const CXIdxObjCPropertyDeclInfo *
5774 clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *);
5775 
5776 CINDEX_LINKAGE const CXIdxIBOutletCollectionAttrInfo *
5777 clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *);
5778 
5779 CINDEX_LINKAGE const CXIdxCXXClassDeclInfo *
5780 clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *);
5781 
5782 /**
5783  * \brief For retrieving a custom CXIdxClientContainer attached to a
5784  * container.
5785  */
5786 CINDEX_LINKAGE CXIdxClientContainer
5787 clang_index_getClientContainer(const CXIdxContainerInfo *);
5788 
5789 /**
5790  * \brief For setting a custom CXIdxClientContainer attached to a
5791  * container.
5792  */
5793 CINDEX_LINKAGE void
5794 clang_index_setClientContainer(const CXIdxContainerInfo *,CXIdxClientContainer);
5795 
5796 /**
5797  * \brief For retrieving a custom CXIdxClientEntity attached to an entity.
5798  */
5799 CINDEX_LINKAGE CXIdxClientEntity
5800 clang_index_getClientEntity(const CXIdxEntityInfo *);
5801 
5802 /**
5803  * \brief For setting a custom CXIdxClientEntity attached to an entity.
5804  */
5805 CINDEX_LINKAGE void
5806 clang_index_setClientEntity(const CXIdxEntityInfo *, CXIdxClientEntity);
5807 
5808 /**
5809  * \brief An indexing action/session, to be applied to one or multiple
5810  * translation units.
5811  */
5812 typedef void *CXIndexAction;
5813 
5814 /**
5815  * \brief An indexing action/session, to be applied to one or multiple
5816  * translation units.
5817  *
5818  * \param CIdx The index object with which the index action will be associated.
5819  */
5820 CINDEX_LINKAGE CXIndexAction clang_IndexAction_create(CXIndex CIdx);
5821 
5822 /**
5823  * \brief Destroy the given index action.
5824  *
5825  * The index action must not be destroyed until all of the translation units
5826  * created within that index action have been destroyed.
5827  */
5828 CINDEX_LINKAGE void clang_IndexAction_dispose(CXIndexAction);
5829 
5830 typedef enum {
5831   /**
5832    * \brief Used to indicate that no special indexing options are needed.
5833    */
5834   CXIndexOpt_None = 0x0,
5835 
5836   /**
5837    * \brief Used to indicate that IndexerCallbacks#indexEntityReference should
5838    * be invoked for only one reference of an entity per source file that does
5839    * not also include a declaration/definition of the entity.
5840    */
5841   CXIndexOpt_SuppressRedundantRefs = 0x1,
5842 
5843   /**
5844    * \brief Function-local symbols should be indexed. If this is not set
5845    * function-local symbols will be ignored.
5846    */
5847   CXIndexOpt_IndexFunctionLocalSymbols = 0x2,
5848 
5849   /**
5850    * \brief Implicit function/class template instantiations should be indexed.
5851    * If this is not set, implicit instantiations will be ignored.
5852    */
5853   CXIndexOpt_IndexImplicitTemplateInstantiations = 0x4,
5854 
5855   /**
5856    * \brief Suppress all compiler warnings when parsing for indexing.
5857    */
5858   CXIndexOpt_SuppressWarnings = 0x8,
5859 
5860   /**
5861    * \brief Skip a function/method body that was already parsed during an
5862    * indexing session associated with a \c CXIndexAction object.
5863    * Bodies in system headers are always skipped.
5864    */
5865   CXIndexOpt_SkipParsedBodiesInSession = 0x10
5866 
5867 } CXIndexOptFlags;
5868 
5869 /**
5870  * \brief Index the given source file and the translation unit corresponding
5871  * to that file via callbacks implemented through #IndexerCallbacks.
5872  *
5873  * \param client_data pointer data supplied by the client, which will
5874  * be passed to the invoked callbacks.
5875  *
5876  * \param index_callbacks Pointer to indexing callbacks that the client
5877  * implements.
5878  *
5879  * \param index_callbacks_size Size of #IndexerCallbacks structure that gets
5880  * passed in index_callbacks.
5881  *
5882  * \param index_options A bitmask of options that affects how indexing is
5883  * performed. This should be a bitwise OR of the CXIndexOpt_XXX flags.
5884  *
5885  * \param[out] out_TU pointer to store a \c CXTranslationUnit that can be
5886  * reused after indexing is finished. Set to \c NULL if you do not require it.
5887  *
5888  * \returns 0 on success or if there were errors from which the compiler could
5889  * recover.  If there is a failure from which there is no recovery, returns
5890  * a non-zero \c CXErrorCode.
5891  *
5892  * The rest of the parameters are the same as #clang_parseTranslationUnit.
5893  */
5894 CINDEX_LINKAGE int clang_indexSourceFile(CXIndexAction,
5895                                          CXClientData client_data,
5896                                          IndexerCallbacks *index_callbacks,
5897                                          unsigned index_callbacks_size,
5898                                          unsigned index_options,
5899                                          const char *source_filename,
5900                                          const char * const *command_line_args,
5901                                          int num_command_line_args,
5902                                          struct CXUnsavedFile *unsaved_files,
5903                                          unsigned num_unsaved_files,
5904                                          CXTranslationUnit *out_TU,
5905                                          unsigned TU_options);
5906 
5907 /**
5908  * \brief Same as clang_indexSourceFile but requires a full command line
5909  * for \c command_line_args including argv[0]. This is useful if the standard
5910  * library paths are relative to the binary.
5911  */
5912 CINDEX_LINKAGE int clang_indexSourceFileFullArgv(
5913     CXIndexAction, CXClientData client_data, IndexerCallbacks *index_callbacks,
5914     unsigned index_callbacks_size, unsigned index_options,
5915     const char *source_filename, const char *const *command_line_args,
5916     int num_command_line_args, struct CXUnsavedFile *unsaved_files,
5917     unsigned num_unsaved_files, CXTranslationUnit *out_TU, unsigned TU_options);
5918 
5919 /**
5920  * \brief Index the given translation unit via callbacks implemented through
5921  * #IndexerCallbacks.
5922  *
5923  * The order of callback invocations is not guaranteed to be the same as
5924  * when indexing a source file. The high level order will be:
5925  *
5926  *   -Preprocessor callbacks invocations
5927  *   -Declaration/reference callbacks invocations
5928  *   -Diagnostic callback invocations
5929  *
5930  * The parameters are the same as #clang_indexSourceFile.
5931  *
5932  * \returns If there is a failure from which there is no recovery, returns
5933  * non-zero, otherwise returns 0.
5934  */
5935 CINDEX_LINKAGE int clang_indexTranslationUnit(CXIndexAction,
5936                                               CXClientData client_data,
5937                                               IndexerCallbacks *index_callbacks,
5938                                               unsigned index_callbacks_size,
5939                                               unsigned index_options,
5940                                               CXTranslationUnit);
5941 
5942 /**
5943  * \brief Retrieve the CXIdxFile, file, line, column, and offset represented by
5944  * the given CXIdxLoc.
5945  *
5946  * If the location refers into a macro expansion, retrieves the
5947  * location of the macro expansion and if it refers into a macro argument
5948  * retrieves the location of the argument.
5949  */
5950 CINDEX_LINKAGE void clang_indexLoc_getFileLocation(CXIdxLoc loc,
5951                                                    CXIdxClientFile *indexFile,
5952                                                    CXFile *file,
5953                                                    unsigned *line,
5954                                                    unsigned *column,
5955                                                    unsigned *offset);
5956 
5957 /**
5958  * \brief Retrieve the CXSourceLocation represented by the given CXIdxLoc.
5959  */
5960 CINDEX_LINKAGE
5961 CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc loc);
5962 
5963 /**
5964  * \brief Visitor invoked for each field found by a traversal.
5965  *
5966  * This visitor function will be invoked for each field found by
5967  * \c clang_Type_visitFields. Its first argument is the cursor being
5968  * visited, its second argument is the client data provided to
5969  * \c clang_Type_visitFields.
5970  *
5971  * The visitor should return one of the \c CXVisitorResult values
5972  * to direct \c clang_Type_visitFields.
5973  */
5974 typedef enum CXVisitorResult (*CXFieldVisitor)(CXCursor C,
5975                                                CXClientData client_data);
5976 
5977 /**
5978  * \brief Visit the fields of a particular type.
5979  *
5980  * This function visits all the direct fields of the given cursor,
5981  * invoking the given \p visitor function with the cursors of each
5982  * visited field. The traversal may be ended prematurely, if
5983  * the visitor returns \c CXFieldVisit_Break.
5984  *
5985  * \param T the record type whose field may be visited.
5986  *
5987  * \param visitor the visitor function that will be invoked for each
5988  * field of \p T.
5989  *
5990  * \param client_data pointer data supplied by the client, which will
5991  * be passed to the visitor each time it is invoked.
5992  *
5993  * \returns a non-zero value if the traversal was terminated
5994  * prematurely by the visitor returning \c CXFieldVisit_Break.
5995  */
5996 CINDEX_LINKAGE unsigned clang_Type_visitFields(CXType T,
5997                                                CXFieldVisitor visitor,
5998                                                CXClientData client_data);
5999 
6000 /**
6001  * @}
6002  */
6003 
6004 /**
6005  * @}
6006  */
6007 
6008 #ifdef __cplusplus
6009 }
6010 #endif
6011 #endif
6012