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