clang-tools 6.0.0

StaticDefinitionInAnonymousNamespaceCheck.cpp
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1 //===--- StaticDefinitionInAnonymousNamespaceCheck.cpp - clang-tidy--------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "StaticDefinitionInAnonymousNamespaceCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13 #include "clang/Lex/Lexer.h"
14
15 using namespace clang::ast_matchers;
16
17 namespace clang {
18 namespace tidy {
19 namespace readability {
20
21 void StaticDefinitionInAnonymousNamespaceCheck::registerMatchers(
22 MatchFinder *Finder) {
23 Finder->addMatcher(
24 namedDecl(anyOf(functionDecl(isDefinition(), isStaticStorageClass()),
25 varDecl(isDefinition(), isStaticStorageClass())),
26 hasParent(namespaceDecl(isAnonymous())))
27 .bind("static-def"),
28 this);
29 }
30
31 void StaticDefinitionInAnonymousNamespaceCheck::check(
32 const MatchFinder::MatchResult &Result) {
33 const auto *Def = Result.Nodes.getNodeAs<NamedDecl>("static-def");
34 // Skips all static definitions defined in Macro.
35 if (Def->getLocation().isMacroID())
36 return;
37
38 // Skips all static definitions in function scope.
39 const DeclContext *DC = Def->getDeclContext();
40 if (DC->getDeclKind() != Decl::Namespace)
41 return;
42
43 auto Diag =
44 diag(Def->getLocation(), "%0 is a static definition in "
45 "anonymous namespace; static is redundant here")
46 << Def;
47 Token Tok;
48 SourceLocation Loc = Def->getSourceRange().getBegin();
49 while (Loc < Def->getSourceRange().getEnd() &&
50 !Lexer::getRawToken(Loc, Tok, *Result.SourceManager, getLangOpts(),
51 true)) {
52 SourceRange TokenRange(Tok.getLocation(), Tok.getEndLoc());
53 StringRef SourceText =
54 Lexer::getSourceText(CharSourceRange::getTokenRange(TokenRange),
55 *Result.SourceManager, getLangOpts());
56 if (SourceText == "static") {
57 Diag << FixItHint::CreateRemoval(TokenRange);
58 break;
59 }
60 Loc = Tok.getEndLoc();
61 }
62 }
63
64 } // namespace readability
65 } // namespace tidy
66 } // namespace clang
Loc
SourceLocation Loc
&#39;#&#39; location in the include directive
Definition: IncludeOrderCheck.cpp:36
clang::ast_matchers
Definition: ClangTidyDiagnosticConsumer.h:27
StaticDefinitionInAnonymousNamespaceCheck.h
clang
Definition: AndroidTidyModule.cpp:28