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