derek.holloway
7502bf64a4
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68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "UseToStringCheck.h"
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using namespace clang::ast_matchers;
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namespace clang::tidy::boost {
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namespace {
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AST_MATCHER(Type, isStrictlyInteger) {
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return Node.isIntegerType() && !Node.isAnyCharacterType() &&
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!Node.isBooleanType();
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}
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} // namespace
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void UseToStringCheck::registerMatchers(MatchFinder *Finder) {
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Finder->addMatcher(
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callExpr(
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hasDeclaration(functionDecl(
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returns(hasDeclaration(classTemplateSpecializationDecl(
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hasName("std::basic_string"),
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hasTemplateArgument(0,
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templateArgument().bind("char_type"))))),
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hasName("boost::lexical_cast"),
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hasParameter(0, hasType(qualType(has(substTemplateTypeParmType(
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isStrictlyInteger()))))))),
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argumentCountIs(1), unless(isInTemplateInstantiation()))
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.bind("to_string"),
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this);
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}
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void UseToStringCheck::check(const MatchFinder::MatchResult &Result) {
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const auto *Call = Result.Nodes.getNodeAs<CallExpr>("to_string");
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auto CharType =
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Result.Nodes.getNodeAs<TemplateArgument>("char_type")->getAsType();
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StringRef StringType;
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if (CharType->isSpecificBuiltinType(BuiltinType::Char_S) ||
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CharType->isSpecificBuiltinType(BuiltinType::Char_U))
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StringType = "string";
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else if (CharType->isSpecificBuiltinType(BuiltinType::WChar_S) ||
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CharType->isSpecificBuiltinType(BuiltinType::WChar_U))
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StringType = "wstring";
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else
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return;
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auto Loc = Call->getBeginLoc();
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auto Diag =
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diag(Loc, "use std::to_%0 instead of boost::lexical_cast<std::%0>")
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<< StringType;
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if (Loc.isMacroID())
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return;
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Diag << FixItHint::CreateReplacement(
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CharSourceRange::getCharRange(Call->getBeginLoc(),
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Call->getArg(0)->getBeginLoc()),
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(llvm::Twine("std::to_") + StringType + "(").str());
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}
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} // namespace clang::tidy::boost
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