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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.
30 lines
972 B
C++
30 lines
972 B
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 "migrate_cpp/cpp_refactoring/for_range.h"
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#include "clang/ASTMatchers/ASTMatchers.h"
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namespace cam = ::clang::ast_matchers;
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namespace Carbon {
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static constexpr char Label[] = "ForRange";
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void ForRange::Run() {
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const auto& stmt = GetNodeAsOrDie<clang::CXXForRangeStmt>(Label);
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// Wrap `in` with spaces so that `for (auto i:items)` has valid results.
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AddReplacement(clang::CharSourceRange::getTokenRange(stmt.getColonLoc(),
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stmt.getColonLoc()),
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" in ");
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}
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void ForRangeFactory::AddMatcher(cam::MatchFinder* finder,
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cam::MatchFinder::MatchCallback* callback) {
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finder->addMatcher(cam::cxxForRangeStmt().bind(Label), callback);
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}
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} // namespace Carbon
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