1 //===-- BitReader.cpp -----------------------------------------------------===//
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 #include "llvm-c/BitReader.h"
11 #include "llvm/Bitcode/ReaderWriter.h"
12 #include "llvm/LLVMContext.h"
13 #include "llvm/Support/MemoryBuffer.h"
14 #include <string>
15 #include <cstring>
16
17 using namespace llvm;
18
19 /* Builds a module from the bitcode in the specified memory buffer, returning a
20 reference to the module via the OutModule parameter. Returns 0 on success.
21 Optionally returns a human-readable error message via OutMessage. */
LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutModule,char ** OutMessage)22 LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
23 LLVMModuleRef *OutModule, char **OutMessage) {
24 return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule,
25 OutMessage);
26 }
27
LLVMParseBitcodeInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutModule,char ** OutMessage)28 LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
29 LLVMMemoryBufferRef MemBuf,
30 LLVMModuleRef *OutModule,
31 char **OutMessage) {
32 std::string Message;
33
34 *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
35 &Message));
36 if (!*OutModule) {
37 if (OutMessage)
38 *OutMessage = strdup(Message.c_str());
39 return 1;
40 }
41
42 return 0;
43 }
44
45 /* Reads a module from the specified path, returning via the OutModule parameter
46 a module provider which performs lazy deserialization. Returns 0 on success.
47 Optionally returns a human-readable error message via OutMessage. */
LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutM,char ** OutMessage)48 LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
49 LLVMMemoryBufferRef MemBuf,
50 LLVMModuleRef *OutM,
51 char **OutMessage) {
52 std::string Message;
53
54 *OutM = wrap(getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef),
55 &Message));
56 if (!*OutM) {
57 if (OutMessage)
58 *OutMessage = strdup(Message.c_str());
59 return 1;
60 }
61
62 return 0;
63
64 }
65
LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf,LLVMModuleRef * OutM,char ** OutMessage)66 LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
67 char **OutMessage) {
68 return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
69 OutMessage);
70 }
71
72 /* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */
LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,LLVMMemoryBufferRef MemBuf,LLVMModuleProviderRef * OutMP,char ** OutMessage)73 LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
74 LLVMMemoryBufferRef MemBuf,
75 LLVMModuleProviderRef *OutMP,
76 char **OutMessage) {
77 return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf,
78 reinterpret_cast<LLVMModuleRef*>(OutMP),
79 OutMessage);
80 }
81
82 /* Deprecated: Use LLVMGetBitcodeModule instead. */
LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,LLVMModuleProviderRef * OutMP,char ** OutMessage)83 LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
84 LLVMModuleProviderRef *OutMP,
85 char **OutMessage) {
86 return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf,
87 OutMP, OutMessage);
88 }
89