clang-tools 10.0.0

UseToStringCheck.cpp
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1 //===--- UseToStringCheck.cpp - clang-tidy---------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "UseToStringCheck.h"
10
11 using namespace clang::ast_matchers;
12
13 namespace clang {
14 namespace tidy {
15 namespace boost {
16
17 namespace {
18 AST_MATCHER(Type, isStrictlyInteger) {
19 return Node.isIntegerType() && !Node.isAnyCharacterType() &&
20 !Node.isBooleanType();
21 }
22 } // namespace
23
24 void UseToStringCheck::registerMatchers(MatchFinder *Finder) {
25 if (!getLangOpts().CPlusPlus)
26 return;
27
28 Finder->addMatcher(
29 callExpr(
30 hasDeclaration(functionDecl(
31 returns(hasDeclaration(classTemplateSpecializationDecl(
32 hasName("std::basic_string"),
33 hasTemplateArgument(0,
34 templateArgument().bind("char_type"))))),
35 hasName("boost::lexical_cast"),
36 hasParameter(0, hasType(qualType(has(substTemplateTypeParmType(
37 isStrictlyInteger()))))))),
38 argumentCountIs(1), unless(isInTemplateInstantiation()))
39 .bind("to_string"),
40 this);
41 }
42
43 void UseToStringCheck::check(const MatchFinder::MatchResult &Result) {
44 const auto *Call = Result.Nodes.getNodeAs<CallExpr>("to_string");
45 auto CharType =
46 Result.Nodes.getNodeAs<TemplateArgument>("char_type")->getAsType();
47
48 StringRef StringType;
49 if (CharType->isSpecificBuiltinType(BuiltinType::Char_S) ||
50 CharType->isSpecificBuiltinType(BuiltinType::Char_U))
51 StringType = "string";
52 else if (CharType->isSpecificBuiltinType(BuiltinType::WChar_S) ||
53 CharType->isSpecificBuiltinType(BuiltinType::WChar_U))
54 StringType = "wstring";
55 else
56 return;
57
58 auto Loc = Call->getBeginLoc();
59 auto Diag =
60 diag(Loc, "use std::to_%0 instead of boost::lexical_cast<std::%0>")
61 << StringType;
62
63 if (Loc.isMacroID())
64 return;
65
66 Diag << FixItHint::CreateReplacement(
67 CharSourceRange::getCharRange(Call->getBeginLoc(),
68 Call->getArg(0)->getBeginLoc()),
69 (llvm::Twine("std::to_") + StringType + "(").str());
70 }
71
72 } // namespace boost
73 } // namespace tidy
74 } // namespace clang
Loc
SourceLocation Loc
&#39;#&#39; location in the include directive
Definition: IncludeOrderCheck.cpp:37
clang::ast_matchers
Definition: AbseilMatcher.h:14
UseToStringCheck.h
clang::ast_matchers::AST_MATCHER
AST_MATCHER(Expr, isMacroID)
Definition: PreferIsaOrDynCastInConditionalsCheck.cpp:18
clang::clangd::CharType
CharType
Definition: FuzzyMatch.h:41
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
Type
NodeType Type
Definition: HTMLGenerator.cpp:73