Stephen Hines | 932bc6e | 2011-07-27 16:26:26 -0700 | [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 | return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule, |
| 25 | OutMessage); |
| 26 | } |
| 27 | |
| 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. */ |
| 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 | |
| 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. */ |
| 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. */ |
| 83 | LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf, |
| 84 | LLVMModuleProviderRef *OutMP, |
| 85 | char **OutMessage) { |
| 86 | return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf, |
| 87 | OutMP, OutMessage); |
| 88 | } |