clang-tools 10.0.0

StaticDefinitionInAnonymousNamespaceCheck.cpp
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1 //===--- StaticDefinitionInAnonymousNamespaceCheck.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 "StaticDefinitionInAnonymousNamespaceCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 #include "clang/Lex/Lexer.h"
13
14 using namespace clang::ast_matchers;
15
16 namespace clang {
17 namespace tidy {
18 namespace readability {
19
20 void StaticDefinitionInAnonymousNamespaceCheck::registerMatchers(
21 MatchFinder *Finder) {
22 Finder->addMatcher(
23 namedDecl(anyOf(functionDecl(isDefinition(), isStaticStorageClass()),
24 varDecl(isDefinition(), isStaticStorageClass())),
25 hasParent(namespaceDecl(isAnonymous())))
26 .bind("static-def"),
27 this);
28 }
29
30 void StaticDefinitionInAnonymousNamespaceCheck::check(
31 const MatchFinder::MatchResult &Result) {
32 const auto *Def = Result.Nodes.getNodeAs<NamedDecl>("static-def");
33 // Skips all static definitions defined in Macro.
34 if (Def->getLocation().isMacroID())
35 return;
36
37 // Skips all static definitions in function scope.
38 const DeclContext *DC = Def->getDeclContext();
39 if (DC->getDeclKind() != Decl::Namespace)
40 return;
41
42 auto Diag =
43 diag(Def->getLocation(), "%0 is a static definition in "
44 "anonymous namespace; static is redundant here")
45 << Def;
46 Token Tok;
47 SourceLocation Loc = Def->getSourceRange().getBegin();
48 while (Loc < Def->getSourceRange().getEnd() &&
49 !Lexer::getRawToken(Loc, Tok, *Result.SourceManager, getLangOpts(),
50 true)) {
51 SourceRange TokenRange(Tok.getLocation(), Tok.getEndLoc());
52 StringRef SourceText =
53 Lexer::getSourceText(CharSourceRange::getTokenRange(TokenRange),
54 *Result.SourceManager, getLangOpts());
55 if (SourceText == "static") {
56 Diag << FixItHint::CreateRemoval(TokenRange);
57 break;
58 }
59 Loc = Tok.getEndLoc();
60 }
61 }
62
63 } // namespace readability
64 } // namespace tidy
65 } // namespace clang
Loc
SourceLocation Loc
&#39;#&#39; location in the include directive
Definition: IncludeOrderCheck.cpp:37
clang::ast_matchers
Definition: AbseilMatcher.h:14
clang::clangd::getTokenRange
llvm::Optional< Range > getTokenRange(const SourceManager &SM, const LangOptions &LangOpts, SourceLocation TokLoc)
Returns the taken range at TokLoc.
Definition: SourceCode.cpp:227
StaticDefinitionInAnonymousNamespaceCheck.h
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
clang::clangd::isAnonymous
static bool isAnonymous(const DeclarationName &N)
Definition: AST.cpp:184