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