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//===-- BitReader.cpp -----------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/BitReader.h"
#include "llvm-c/Core.h"
#include "llvm/Bitcode/BitcodeReader.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include <cstring>
#include <string>
using namespace llvm;
/* Builds a module from the bitcode in the specified memory buffer, returning a
reference to the module via the OutModule parameter. Returns 0 on success.
Optionally returns a human-readable error message via OutMessage. */
LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutModule,
char **OutMessage) {
return LLVMParseBitcodeInContext(LLVMGetGlobalContext(), MemBuf, OutModule,
OutMessage);
}
LLVMBool LLVMParseBitcode2(LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutModule) {
return LLVMParseBitcodeInContext2(LLVMGetGlobalContext(), MemBuf, OutModule);
}
static void diagnosticHandler(const DiagnosticInfo &DI, void *C) {
auto *Message = reinterpret_cast<std::string *>(C);
raw_string_ostream Stream(*Message);
DiagnosticPrinterRawOStream DP(Stream);
DI.print(DP);
}
LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutModule,
char **OutMessage) {
MemoryBufferRef Buf = unwrap(MemBuf)->getMemBufferRef();
LLVMContext &Ctx = *unwrap(ContextRef);
LLVMContext::DiagnosticHandlerTy OldDiagnosticHandler =
Ctx.getDiagnosticHandler();
void *OldDiagnosticContext = Ctx.getDiagnosticContext();
std::string Message;
Ctx.setDiagnosticHandler(diagnosticHandler, &Message, true);
ErrorOr<std::unique_ptr<Module>> ModuleOrErr = parseBitcodeFile(Buf, Ctx);
Ctx.setDiagnosticHandler(OldDiagnosticHandler, OldDiagnosticContext, true);
if (ModuleOrErr.getError()) {
if (OutMessage)
*OutMessage = strdup(Message.c_str());
*OutModule = wrap((Module *)nullptr);
return 1;
}
*OutModule = wrap(ModuleOrErr.get().release());
return 0;
}
LLVMBool LLVMParseBitcodeInContext2(LLVMContextRef ContextRef,
LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutModule) {
MemoryBufferRef Buf = unwrap(MemBuf)->getMemBufferRef();
LLVMContext &Ctx = *unwrap(ContextRef);
ErrorOr<std::unique_ptr<Module>> ModuleOrErr = parseBitcodeFile(Buf, Ctx);
if (ModuleOrErr.getError()) {
*OutModule = wrap((Module *)nullptr);
return 1;
}
*OutModule = wrap(ModuleOrErr.get().release());
return 0;
}
/* Reads a module from the specified path, returning via the OutModule parameter
a module provider which performs lazy deserialization. Returns 0 on success.
Optionally returns a human-readable error message via OutMessage. */
LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutM, char **OutMessage) {
LLVMContext &Ctx = *unwrap(ContextRef);
LLVMContext::DiagnosticHandlerTy OldDiagnosticHandler =
Ctx.getDiagnosticHandler();
void *OldDiagnosticContext = Ctx.getDiagnosticContext();
std::string Message;
Ctx.setDiagnosticHandler(diagnosticHandler, &Message, true);
std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
ErrorOr<std::unique_ptr<Module>> ModuleOrErr =
getOwningLazyBitcodeModule(std::move(Owner), Ctx);
Owner.release();
Ctx.setDiagnosticHandler(OldDiagnosticHandler, OldDiagnosticContext, true);
if (ModuleOrErr.getError()) {
*OutM = wrap((Module *)nullptr);
if (OutMessage)
*OutMessage = strdup(Message.c_str());
return 1;
}
*OutM = wrap(ModuleOrErr.get().release());
return 0;
}
LLVMBool LLVMGetBitcodeModuleInContext2(LLVMContextRef ContextRef,
LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutM) {
LLVMContext &Ctx = *unwrap(ContextRef);
std::unique_ptr<MemoryBuffer> Owner(unwrap(MemBuf));
ErrorOr<std::unique_ptr<Module>> ModuleOrErr =
getOwningLazyBitcodeModule(std::move(Owner), Ctx);
Owner.release();
if (ModuleOrErr.getError()) {
*OutM = wrap((Module *)nullptr);
return 1;
}
*OutM = wrap(ModuleOrErr.get().release());
return 0;
}
LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
char **OutMessage) {
return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
OutMessage);
}
LLVMBool LLVMGetBitcodeModule2(LLVMMemoryBufferRef MemBuf,
LLVMModuleRef *OutM) {
return LLVMGetBitcodeModuleInContext2(LLVMGetGlobalContext(), MemBuf, OutM);
}
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