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https://github.com/carbon-language/carbon-lang.git
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Jon Meow
6fa42a7f3c
This replaces GetAstMatcher with AddMatcher because cxxForRangeStmt is a StatementMatcher. addMatcher has multiple definitions (https://clang.llvm.org/doxygen/classclang_1_1ast__matchers_1_1MatchFinder.html) and so this approach allows using the right addMatcher without writing per-call overloads. To handle the `var`, I'm considering something like moving VarDecl logic into a VarMatcherBase so that I can just use CXXForRangeStmt's getLoopVariable. The problem is a for-range statement has multiple VarDecls, and getLoopVariable may be the easiest way to identify the real one.
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "clang/Tooling/CommonOptionsParser.h"
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#include "clang/Tooling/Refactoring.h"
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#include "migrate_cpp/cpp_refactoring/fn_inserter.h"
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#include "migrate_cpp/cpp_refactoring/for_range.h"
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#include "migrate_cpp/cpp_refactoring/matcher_manager.h"
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#include "migrate_cpp/cpp_refactoring/var_decl.h"
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using clang::tooling::RefactoringTool;
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// Initialize the files in replacements. Matcher will restrict replacements to
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// initialized files.
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static void InitReplacements(RefactoringTool* tool) {
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clang::FileManager& files = tool->getFiles();
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Carbon::Matcher::ReplacementMap& repl = tool->getReplacements();
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for (const std::string& path : tool->getSourcePaths()) {
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llvm::ErrorOr<const clang::FileEntry*> file = files.getFile(path);
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if (file.getError()) {
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llvm::report_fatal_error("Error accessing `" + path +
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"`: " + file.getError().message() + "\n");
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}
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repl.insert({files.getCanonicalName(*file).str(), {}});
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}
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}
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auto main(int argc, const char** argv) -> int {
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llvm::cl::OptionCategory category("C++ refactoring options");
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auto parser =
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clang::tooling::CommonOptionsParser::create(argc, argv, category);
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RefactoringTool tool(parser->getCompilations(), parser->getSourcePathList());
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InitReplacements(&tool);
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// Set up AST matcher callbacks.
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Carbon::MatcherManager matchers(&tool.getReplacements());
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matchers.Register(std::make_unique<Carbon::FnInserterFactory>());
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matchers.Register(std::make_unique<Carbon::ForRangeFactory>());
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matchers.Register(std::make_unique<Carbon::VarDeclFactory>());
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return tool.runAndSave(
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clang::tooling::newFrontendActionFactory(matchers.GetFinder()).get());
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}
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