mirror of
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127 lines
4.6 KiB
C++
127 lines
4.6 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "sandboxed_api/tools/clang_generator/generator.h"
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#include <fstream>
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#include <iostream>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "clang/AST/Type.h"
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#include "clang/Format/Format.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "sandboxed_api/tools/clang_generator/diagnostics.h"
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#include "sandboxed_api/tools/clang_generator/emitter.h"
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#include "sandboxed_api/util/fileops.h"
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#include "sandboxed_api/util/status_macros.h"
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namespace sapi {
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namespace {
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// Replaces the file extension of a path name.
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std::string ReplaceFileExtension(absl::string_view path,
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absl::string_view new_extension) {
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auto last_slash = path.rfind('/');
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auto pos = path.rfind('.', last_slash);
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if (pos != absl::string_view::npos && last_slash != absl::string_view::npos) {
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pos += last_slash;
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}
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return absl::StrCat(path.substr(0, pos), new_extension);
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}
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} // namespace
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std::string GetOutputFilename(absl::string_view source_file) {
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return ReplaceFileExtension(source_file, ".sapi.h");
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}
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bool GeneratorASTVisitor::VisitFunctionDecl(clang::FunctionDecl* decl) {
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if (!decl->isCXXClassMember() && // Skip classes
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decl->isExternC() && // Skip non external functions
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!decl->isTemplated() && // Skip function templates
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// Process either all function or just the requested ones
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(options_.function_names.empty() ||
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options_.function_names.count(ToStringView(decl->getName())) > 0)) {
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functions_.push_back(decl);
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collector_.CollectRelatedTypes(decl->getDeclaredReturnType());
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for (const clang::ParmVarDecl* param : decl->parameters()) {
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collector_.CollectRelatedTypes(param->getType());
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}
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}
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return true;
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}
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void GeneratorASTConsumer::HandleTranslationUnit(clang::ASTContext& context) {
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if (!visitor_.TraverseDecl(context.getTranslationUnitDecl())) {
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ReportFatalError(context.getDiagnostics(),
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context.getTranslationUnitDecl()->getBeginLoc(),
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"AST traversal exited early");
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}
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for (clang::QualType qual : visitor_.collector_.collected()) {
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emitter_.CollectType(qual);
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}
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for (clang::FunctionDecl* func : visitor_.functions_) {
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emitter_.CollectFunction(func);
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}
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}
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bool GeneratorFactory::runInvocation(
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std::shared_ptr<clang::CompilerInvocation> invocation,
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clang::FileManager* files,
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std::shared_ptr<clang::PCHContainerOperations> pch_container_ops,
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clang::DiagnosticConsumer* diag_consumer) {
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auto& options = invocation->getPreprocessorOpts();
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// Explicitly ask to define __clang_analyzer__ macro.
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options.SetUpStaticAnalyzer = true;
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for (const auto& def : {
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// Enable code to detect whether it is being SAPI-ized
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"__SAPI__",
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// TODO(b/222241644): Figure out how to deal with intrinsics properly
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"__builtin_ia32_paddsb128=",
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"__builtin_ia32_paddsb256=",
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"__builtin_ia32_paddsb512=",
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"__builtin_ia32_paddsw128=",
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"__builtin_ia32_paddsw256=",
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"__builtin_ia32_paddsw512=",
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"__builtin_ia32_paddusb128=",
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"__builtin_ia32_paddusb256=",
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"__builtin_ia32_paddusb512=",
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"__builtin_ia32_paddusw128=",
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"__builtin_ia32_paddusw256=",
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"__builtin_ia32_paddusw512=",
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"__builtin_ia32_psubsb128=",
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"__builtin_ia32_psubsb256=",
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"__builtin_ia32_psubsb512=",
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"__builtin_ia32_psubsw128=",
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"__builtin_ia32_psubsw256=",
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"__builtin_ia32_psubsw512=",
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"__builtin_ia32_psubusb128=",
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"__builtin_ia32_psubusb256=",
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"__builtin_ia32_psubusb512=",
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"__builtin_ia32_psubusw128=",
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"__builtin_ia32_psubusw256=",
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"__builtin_ia32_psubusw512=",
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}) {
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options.addMacroDef(def);
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}
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return FrontendActionFactory::runInvocation(std::move(invocation), files,
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std::move(pch_container_ops),
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diag_consumer);
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}
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} // namespace sapi
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