mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-07 06:36:05 +00:00
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
|
//===---------- TransformerClangTidyCheck.cpp - clang-tidy ----------------===//
|
||
|
|
//
|
||
|
|
// 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
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "TransformerClangTidyCheck.h"
|
||
|
|
|
||
|
|
namespace clang {
|
||
|
|
namespace tidy {
|
||
|
|
namespace utils {
|
||
|
|
using tooling::RewriteRule;
|
||
|
|
|
||
|
|
void TransformerClangTidyCheck::registerMatchers(
|
||
|
|
ast_matchers::MatchFinder *Finder) {
|
||
|
|
Finder->addDynamicMatcher(tooling::detail::buildMatcher(Rule), this);
|
||
|
|
}
|
||
|
|
|
||
|
|
void TransformerClangTidyCheck::check(
|
||
|
|
const ast_matchers::MatchFinder::MatchResult &Result) {
|
||
|
|
if (Result.Context->getDiagnostics().hasErrorOccurred())
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Verify the existence and validity of the AST node that roots this rule.
|
||
|
|
const ast_matchers::BoundNodes::IDToNodeMap &NodesMap = Result.Nodes.getMap();
|
||
|
|
auto Root = NodesMap.find(RewriteRule::RootID);
|
||
|
|
assert(Root != NodesMap.end() && "Transformation failed: missing root node.");
|
||
|
|
SourceLocation RootLoc = Result.SourceManager->getExpansionLoc(
|
||
|
|
Root->second.getSourceRange().getBegin());
|
||
|
|
assert(RootLoc.isValid() && "Invalid location for Root node of match.");
|
||
|
|
|
||
|
|
RewriteRule::Case Case = tooling::detail::findSelectedCase(Result, Rule);
|
||
|
|
Expected<SmallVector<tooling::detail::Transformation, 1>> Transformations =
|
||
|
|
tooling::detail::translateEdits(Result, Case.Edits);
|
||
|
|
if (!Transformations) {
|
||
|
|
llvm::errs() << "Rewrite failed: "
|
||
|
|
<< llvm::toString(Transformations.takeError()) << "\n";
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// No rewrite applied, but no error encountered either.
|
||
|
|
if (Transformations->empty())
|
||
|
|
return;
|
||
|
|
|
||
|
|
StringRef Message = "no explanation";
|
||
|
|
if (Case.Explanation) {
|
||
|
|
if (Expected<std::string> E = Case.Explanation(Result))
|
||
|
|
Message = *E;
|
||
|
|
else
|
||
|
|
llvm::errs() << "Error in explanation: " << llvm::toString(E.takeError())
|
||
|
|
<< "\n";
|
||
|
|
}
|
||
|
|
DiagnosticBuilder Diag = diag(RootLoc, Message);
|
||
|
|
for (const auto &T : *Transformations) {
|
||
|
|
Diag << FixItHint::CreateReplacement(T.Range, T.Replacement);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace utils
|
||
|
|
} // namespace tidy
|
||
|
|
} // namespace clang
|