| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "qualify_declval.hpp" |
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| 10 | |
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| 11 | namespace { |
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| 12 | AST_MATCHER(clang::UnresolvedLookupExpr, requiresADL) { return Node.requiresADL(); } |
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| 13 | AST_MATCHER(clang::UnresolvedLookupExpr, isDeclval) { return Node.getName().getAsString() == "declval" ; } |
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| 14 | } // namespace |
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| 15 | |
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| 16 | namespace libcpp { |
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| 17 | qualify_declval::qualify_declval(llvm::StringRef name, clang::tidy::ClangTidyContext* context) |
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| 18 | : clang::tidy::ClangTidyCheck(name, context) {} |
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| 19 | |
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| 20 | void qualify_declval::registerMatchers(clang::ast_matchers::MatchFinder* finder) { |
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| 21 | using namespace clang::ast_matchers; |
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| 22 | finder->addMatcher(callExpr(has(unresolvedLookupExpr(requiresADL(), isDeclval()))).bind("ADLcall" ), this); |
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| 23 | } |
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| 24 | |
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| 25 | void qualify_declval::check(const clang::ast_matchers::MatchFinder::MatchResult& result) { |
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| 26 | if (const auto* call = result.Nodes.getNodeAs<clang::CallExpr>("ADLcall" ); call != nullptr) { |
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| 27 | diag(call->getBeginLoc(), "declval should be qualified to get better error messages" ) |
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| 28 | << clang::FixItHint::CreateInsertion(call->getBeginLoc(), "std::" ); |
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| 29 | } |
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| 30 | } |
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| 31 | } // namespace libcpp |
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| 32 | |
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