1 //===-- BitReader.cpp -----------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm-c/BitReader.h"
11 #include "llvm-c/Core.h"
12 #include "llvm/Bitcode/BitcodeReader.h"
13 #include "llvm/IR/DiagnosticPrinter.h"
14 #include "llvm/IR/LLVMContext.h"
15 #include "llvm/IR/Module.h"
16 #include "llvm/Support/MemoryBuffer.h"
17 #include "llvm/Support/raw_ostream.h"
23 /* Builds a module from the bitcode in the specified memory buffer, returning a
24 reference to the module via the OutModule parameter. Returns 0 on success.
25 Optionally returns a human-readable error message via OutMessage. */
26 LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutModule,
28 return LLVMParseBitcodeInContext(LLVMGetGlobalContext(), MemBuf, OutModule,
32 LLVMBool LLVMParseBitcode2(LLVMMemoryBufferRef MemBuf,
33 LLVMModuleRef *OutModule) {
34 return LLVMParseBitcodeInContext2(LLVMGetGlobalContext(), MemBuf, OutModule);
37 LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
38 LLVMMemoryBufferRef MemBuf,
39 LLVMModuleRef *OutModule,
41 MemoryBufferRef Buf = unwrap(MemBuf)->getMemBufferRef();
42 LLVMContext &Ctx = *unwrap(ContextRef);
44 Expected<std::unique_ptr<Module>> ModuleOrErr = parseBitcodeFile(Buf, Ctx);
45 if (Error Err = ModuleOrErr.takeError()) {
47 handleAllErrors(std::move(Err), [&](ErrorInfoBase &EIB) {
48 Message = EIB.message();
51 *OutMessage = strdup(Message.c_str());
52 *OutModule = wrap((Module *)nullptr);
56 *OutModule = wrap(ModuleOrErr.get().release());
60 LLVMBool LLVMParseBitcodeInContext2(LLVMContextRef ContextRef,
61 LLVMMemoryBufferRef MemBuf,
62 LLVMModuleRef *OutModule) {
63 MemoryBufferRef Buf = unwrap(MemBuf)->getMemBufferRef();
64 LLVMContext &Ctx = *unwrap(ContextRef);
66 ErrorOr<std::unique_ptr<Module>> ModuleOrErr =
67 expectedToErrorOrAndEmitErrors(Ctx, parseBitcodeFile(Buf, Ctx));
68 if (ModuleOrErr.getError()) {
69 *OutModule = wrap((Module *)nullptr);
73 *OutModule = wrap(ModuleOrErr.get().release());
77 /* Reads a module from the specified path, returning via the OutModule parameter
78 a module provider which performs lazy deserialization. Returns 0 on success.
79 Optionally returns a human-readable error message via OutMessage. */
80 LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
81 LLVMMemoryBufferRef MemBuf,
82 LLVMModuleRef *OutM, char **OutMessage) {
83 LLVMContext &Ctx = *unwrap(ContextRef);
84 std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
85 Expected<std::unique_ptr<Module>> ModuleOrErr =
86 getOwningLazyBitcodeModule(std::move(Owner), Ctx);
87 // Release the buffer if we didn't take ownership of it since we never owned
89 (void)Owner.release();
91 if (Error Err = ModuleOrErr.takeError()) {
93 handleAllErrors(std::move(Err), [&](ErrorInfoBase &EIB) {
94 Message = EIB.message();
97 *OutMessage = strdup(Message.c_str());
98 *OutM = wrap((Module *)nullptr);
102 *OutM = wrap(ModuleOrErr.get().release());
107 LLVMBool LLVMGetBitcodeModuleInContext2(LLVMContextRef ContextRef,
108 LLVMMemoryBufferRef MemBuf,
109 LLVMModuleRef *OutM) {
110 LLVMContext &Ctx = *unwrap(ContextRef);
111 std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
113 ErrorOr<std::unique_ptr<Module>> ModuleOrErr = expectedToErrorOrAndEmitErrors(
114 Ctx, getOwningLazyBitcodeModule(std::move(Owner), Ctx));
117 if (ModuleOrErr.getError()) {
118 *OutM = wrap((Module *)nullptr);
122 *OutM = wrap(ModuleOrErr.get().release());
126 LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
128 return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
132 LLVMBool LLVMGetBitcodeModule2(LLVMMemoryBufferRef MemBuf,
133 LLVMModuleRef *OutM) {
134 return LLVMGetBitcodeModuleInContext2(LLVMGetGlobalContext(), MemBuf, OutM);