| 1 | //===--- UseToStringCheck.cpp - clang-tidy---------------------------------===// |
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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 "UseToStringCheck.h" |
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| 10 | |
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| 11 | using namespace clang::ast_matchers; |
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| 12 | |
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| 13 | namespace clang::tidy::boost { |
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| 14 | |
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| 15 | namespace { |
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| 16 | AST_MATCHER(Type, isStrictlyInteger) { |
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| 17 | return Node.isIntegerType() && !Node.isAnyCharacterType() && |
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| 18 | !Node.isBooleanType(); |
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| 19 | } |
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| 20 | } // namespace |
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| 21 | |
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| 22 | void UseToStringCheck::registerMatchers(MatchFinder *Finder) { |
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| 23 | Finder->addMatcher( |
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| 24 | NodeMatch: callExpr( |
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| 25 | hasDeclaration(InnerMatcher: functionDecl( |
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| 26 | returns(InnerMatcher: hasDeclaration(InnerMatcher: classTemplateSpecializationDecl( |
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| 27 | hasName(Name: "std::basic_string" ), |
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| 28 | hasTemplateArgument(N: 0, |
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| 29 | InnerMatcher: templateArgument().bind(ID: "char_type" ))))), |
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| 30 | hasName(Name: "boost::lexical_cast" ), |
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| 31 | hasParameter(N: 0, InnerMatcher: hasType(InnerMatcher: qualType(has(substTemplateTypeParmType( |
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| 32 | isStrictlyInteger()))))))), |
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| 33 | argumentCountIs(N: 1), unless(isInTemplateInstantiation())) |
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| 34 | .bind(ID: "to_string" ), |
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| 35 | Action: this); |
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| 36 | } |
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| 37 | |
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| 38 | void UseToStringCheck::check(const MatchFinder::MatchResult &Result) { |
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| 39 | const auto *Call = Result.Nodes.getNodeAs<CallExpr>(ID: "to_string" ); |
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| 40 | auto CharType = |
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| 41 | Result.Nodes.getNodeAs<TemplateArgument>(ID: "char_type" )->getAsType(); |
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| 42 | |
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| 43 | StringRef StringType; |
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| 44 | if (CharType->isSpecificBuiltinType(K: BuiltinType::Char_S) || |
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| 45 | CharType->isSpecificBuiltinType(K: BuiltinType::Char_U)) |
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| 46 | StringType = "string" ; |
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| 47 | else if (CharType->isSpecificBuiltinType(K: BuiltinType::WChar_S) || |
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| 48 | CharType->isSpecificBuiltinType(K: BuiltinType::WChar_U)) |
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| 49 | StringType = "wstring" ; |
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| 50 | else |
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| 51 | return; |
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| 52 | |
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| 53 | auto Loc = Call->getBeginLoc(); |
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| 54 | auto Diag = |
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| 55 | diag(Loc, Description: "use std::to_%0 instead of boost::lexical_cast<std::%0>" ) |
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| 56 | << StringType; |
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| 57 | |
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| 58 | if (Loc.isMacroID()) |
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| 59 | return; |
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| 60 | |
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| 61 | Diag << FixItHint::CreateReplacement( |
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| 62 | CharSourceRange::getCharRange(Call->getBeginLoc(), |
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| 63 | Call->getArg(Arg: 0)->getBeginLoc()), |
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| 64 | (llvm::Twine("std::to_" ) + StringType + "(" ).str()); |
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| 65 | } |
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| 66 | |
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| 67 | } // namespace clang::tidy::boost |
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| 68 | |
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