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//===- Parser.cpp - Main dispatch module for the Parser library -----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This library implements the functionality defined in llvm/AsmParser/Parser.h
//
//===----------------------------------------------------------------------===//
#include "llvm/AsmParser/Parser.h"
#include "LLParser.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/ModuleSummaryIndex.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
#include <cstring>
#include <system_error>
using namespace llvm;
bool llvm::parseAssemblyInto(MemoryBufferRef F, Module *M,
ModuleSummaryIndex *Index, SMDiagnostic &Err,
SlotMapping *Slots, bool UpgradeDebugInfo,
StringRef DataLayoutString) {
SourceMgr SM;
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(F);
SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
LLVMContext Context;
return LLParser(F.getBuffer(), SM, Err, M, Index,
M ? M->getContext() : Context, Slots, UpgradeDebugInfo,
DataLayoutString)
.Run();
}
std::unique_ptr<Module>
llvm::parseAssembly(MemoryBufferRef F, SMDiagnostic &Err, LLVMContext &Context,
SlotMapping *Slots, bool UpgradeDebugInfo,
StringRef DataLayoutString) {
std::unique_ptr<Module> M =
make_unique<Module>(F.getBufferIdentifier(), Context);
if (parseAssemblyInto(F, M.get(), nullptr, Err, Slots, UpgradeDebugInfo,
DataLayoutString))
return nullptr;
return M;
}
std::unique_ptr<Module>
llvm::parseAssemblyFile(StringRef Filename, SMDiagnostic &Err,
LLVMContext &Context, SlotMapping *Slots,
bool UpgradeDebugInfo, StringRef DataLayoutString) {
ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
MemoryBuffer::getFileOrSTDIN(Filename);
if (std::error_code EC = FileOrErr.getError()) {
Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
"Could not open input file: " + EC.message());
return nullptr;
}
return parseAssembly(FileOrErr.get()->getMemBufferRef(), Err, Context, Slots,
UpgradeDebugInfo, DataLayoutString);
}
ParsedModuleAndIndex llvm::parseAssemblyWithIndex(
MemoryBufferRef F, SMDiagnostic &Err, LLVMContext &Context,
SlotMapping *Slots, bool UpgradeDebugInfo, StringRef DataLayoutString) {
std::unique_ptr<Module> M =
make_unique<Module>(F.getBufferIdentifier(), Context);
std::unique_ptr<ModuleSummaryIndex> Index =
make_unique<ModuleSummaryIndex>(/*HaveGVs=*/true);
if (parseAssemblyInto(F, M.get(), Index.get(), Err, Slots, UpgradeDebugInfo,
DataLayoutString))
return {nullptr, nullptr};
return {std::move(M), std::move(Index)};
}
ParsedModuleAndIndex llvm::parseAssemblyFileWithIndex(
StringRef Filename, SMDiagnostic &Err, LLVMContext &Context,
SlotMapping *Slots, bool UpgradeDebugInfo, StringRef DataLayoutString) {
ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
MemoryBuffer::getFileOrSTDIN(Filename);
if (std::error_code EC = FileOrErr.getError()) {
Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
"Could not open input file: " + EC.message());
return {nullptr, nullptr};
}
return parseAssemblyWithIndex(FileOrErr.get()->getMemBufferRef(), Err,
Context, Slots, UpgradeDebugInfo,
DataLayoutString);
}
std::unique_ptr<Module>
llvm::parseAssemblyString(StringRef AsmString, SMDiagnostic &Err,
LLVMContext &Context, SlotMapping *Slots,
bool UpgradeDebugInfo, StringRef DataLayoutString) {
MemoryBufferRef F(AsmString, "<string>");
return parseAssembly(F, Err, Context, Slots, UpgradeDebugInfo,
DataLayoutString);
}
static bool parseSummaryIndexAssemblyInto(MemoryBufferRef F,
ModuleSummaryIndex &Index,
SMDiagnostic &Err) {
SourceMgr SM;
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(F);
SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
// The parser holds a reference to a context that is unused when parsing the
// index, but we need to initialize it.
LLVMContext unusedContext;
return LLParser(F.getBuffer(), SM, Err, nullptr, &Index, unusedContext).Run();
}
std::unique_ptr<ModuleSummaryIndex>
llvm::parseSummaryIndexAssembly(MemoryBufferRef F, SMDiagnostic &Err) {
std::unique_ptr<ModuleSummaryIndex> Index =
make_unique<ModuleSummaryIndex>(/*HaveGVs=*/false);
if (parseSummaryIndexAssemblyInto(F, *Index, Err))
return nullptr;
return Index;
}
std::unique_ptr<ModuleSummaryIndex>
llvm::parseSummaryIndexAssemblyFile(StringRef Filename, SMDiagnostic &Err) {
ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
MemoryBuffer::getFileOrSTDIN(Filename);
if (std::error_code EC = FileOrErr.getError()) {
Err = SMDiagnostic(Filename, SourceMgr::DK_Error,
"Could not open input file: " + EC.message());
return nullptr;
}
return parseSummaryIndexAssembly(FileOrErr.get()->getMemBufferRef(), Err);
}
Constant *llvm::parseConstantValue(StringRef Asm, SMDiagnostic &Err,
const Module &M, const SlotMapping *Slots) {
SourceMgr SM;
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Asm);
SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
Constant *C;
if (LLParser(Asm, SM, Err, const_cast<Module *>(&M), nullptr, M.getContext())
.parseStandaloneConstantValue(C, Slots))
return nullptr;
return C;
}
Type *llvm::parseType(StringRef Asm, SMDiagnostic &Err, const Module &M,
const SlotMapping *Slots) {
unsigned Read;
Type *Ty = parseTypeAtBeginning(Asm, Read, Err, M, Slots);
if (!Ty)
return nullptr;
if (Read != Asm.size()) {
SourceMgr SM;
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Asm);
SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
Err = SM.GetMessage(SMLoc::getFromPointer(Asm.begin() + Read),
SourceMgr::DK_Error, "expected end of string");
return nullptr;
}
return Ty;
}
Type *llvm::parseTypeAtBeginning(StringRef Asm, unsigned &Read,
SMDiagnostic &Err, const Module &M,
const SlotMapping *Slots) {
SourceMgr SM;
std::unique_ptr<MemoryBuffer> Buf = MemoryBuffer::getMemBuffer(Asm);
SM.AddNewSourceBuffer(std::move(Buf), SMLoc());
Type *Ty;
if (LLParser(Asm, SM, Err, const_cast<Module *>(&M), nullptr, M.getContext())
.parseTypeAtBeginning(Ty, Read, Slots))
return nullptr;
return Ty;
}
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