| Shih-wei Liao | e264f62 | 2010-02-10 11:10:31 -0800 | [diff] [blame^] | 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. */ |
| 22 | LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf, |
| 23 | LLVMModuleRef *OutModule, char **OutMessage) { |
| 24 | std::string Message; |
| 25 | |
| 26 | *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), getGlobalContext(), |
| 27 | &Message)); |
| 28 | if (!*OutModule) { |
| 29 | if (OutMessage) |
| 30 | *OutMessage = strdup(Message.c_str()); |
| 31 | return 1; |
| 32 | } |
| 33 | |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef, |
| 38 | LLVMMemoryBufferRef MemBuf, |
| 39 | LLVMModuleRef *OutModule, |
| 40 | char **OutMessage) { |
| 41 | std::string Message; |
| 42 | |
| 43 | *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef), |
| 44 | &Message)); |
| 45 | if (!*OutModule) { |
| 46 | if (OutMessage) |
| 47 | *OutMessage = strdup(Message.c_str()); |
| 48 | return 1; |
| 49 | } |
| 50 | |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | /* Reads a module from the specified path, returning via the OutModule parameter |
| 55 | a module provider which performs lazy deserialization. Returns 0 on success. |
| 56 | Optionally returns a human-readable error message via OutMessage. */ |
| 57 | LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf, |
| 58 | LLVMModuleProviderRef *OutMP, |
| 59 | char **OutMessage) { |
| 60 | std::string Message; |
| 61 | |
| 62 | *OutMP = reinterpret_cast<LLVMModuleProviderRef>( |
| 63 | getLazyBitcodeModule(unwrap(MemBuf), getGlobalContext(), &Message)); |
| 64 | |
| 65 | if (!*OutMP) { |
| 66 | if (OutMessage) |
| 67 | *OutMessage = strdup(Message.c_str()); |
| 68 | return 1; |
| 69 | } |
| 70 | |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef, |
| 75 | LLVMMemoryBufferRef MemBuf, |
| 76 | LLVMModuleProviderRef *OutMP, |
| 77 | char **OutMessage) { |
| 78 | std::string Message; |
| 79 | |
| 80 | *OutMP = reinterpret_cast<LLVMModuleProviderRef>( |
| 81 | getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef), &Message)); |
| 82 | if (!*OutMP) { |
| 83 | if (OutMessage) |
| 84 | *OutMessage = strdup(Message.c_str()); |
| 85 | return 1; |
| 86 | } |
| 87 | |
| 88 | return 0; |
| 89 | } |