forked from OSchip/llvm-project
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
//===--- DefaultArgumentsCheck.cpp - clang-tidy----------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DefaultArgumentsCheck.h"
|
|
|
|
using namespace clang::ast_matchers;
|
|
|
|
namespace clang {
|
|
namespace tidy {
|
|
namespace fuchsia {
|
|
|
|
void DefaultArgumentsCheck::registerMatchers(MatchFinder *Finder) {
|
|
// Calling a function which uses default arguments is disallowed.
|
|
Finder->addMatcher(cxxDefaultArgExpr().bind("stmt"), this);
|
|
// Declaring default parameters is disallowed.
|
|
Finder->addMatcher(parmVarDecl(hasDefaultArgument()).bind("decl"), this);
|
|
}
|
|
|
|
void DefaultArgumentsCheck::check(const MatchFinder::MatchResult &Result) {
|
|
if (const auto *S =
|
|
Result.Nodes.getNodeAs<CXXDefaultArgExpr>("stmt")) {
|
|
diag(S->getUsedLocation(),
|
|
"calling a function that uses a default argument is disallowed");
|
|
diag(S->getParam()->getBeginLoc(), "default parameter was declared here",
|
|
DiagnosticIDs::Note);
|
|
} else if (const ParmVarDecl *D =
|
|
Result.Nodes.getNodeAs<ParmVarDecl>("decl")) {
|
|
SourceRange DefaultArgRange = D->getDefaultArgRange();
|
|
|
|
if (DefaultArgRange.getEnd() != D->getEndLoc()) {
|
|
return;
|
|
} else if (DefaultArgRange.getBegin().isMacroID()) {
|
|
diag(D->getBeginLoc(),
|
|
"declaring a parameter with a default argument is disallowed");
|
|
} else {
|
|
SourceLocation StartLocation =
|
|
D->getName().empty() ? D->getBeginLoc() : D->getLocation();
|
|
|
|
SourceRange RemovalRange(Lexer::getLocForEndOfToken(
|
|
StartLocation, 0,
|
|
*Result.SourceManager,
|
|
Result.Context->getLangOpts()
|
|
),
|
|
DefaultArgRange.getEnd()
|
|
);
|
|
|
|
diag(D->getBeginLoc(),
|
|
"declaring a parameter with a default argument is disallowed")
|
|
<< D << FixItHint::CreateRemoval(RemovalRange);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace fuchsia
|
|
} // namespace tidy
|
|
} // namespace clang
|