зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.0 KiB
C++
67 строки
2.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "NonParamInsideFunctionDeclChecker.h"
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#include "CustomMatchers.h"
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void NonParamInsideFunctionDeclChecker::registerMatchers(MatchFinder* AstMatcher) {
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AstMatcher->addMatcher(
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functionDecl(anyOf(allOf(isDefinition(),
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hasAncestor(classTemplateSpecializationDecl()
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.bind("spec"))),
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isDefinition()))
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.bind("func"),
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this);
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AstMatcher->addMatcher(
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lambdaExpr().bind("lambda"),
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this);
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}
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void NonParamInsideFunctionDeclChecker::check(
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const MatchFinder::MatchResult &Result) {
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static DenseSet<const FunctionDecl*> CheckedFunctionDecls;
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const FunctionDecl *func = Result.Nodes.getNodeAs<FunctionDecl>("func");
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if (!func) {
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const LambdaExpr *lambda = Result.Nodes.getNodeAs<LambdaExpr>("lambda");
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if (lambda) {
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func = lambda->getCallOperator();
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}
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}
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if (!func) {
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return;
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}
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if (func->isDeleted()) {
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return;
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}
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// Don't report errors on the same declarations more than once.
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if (CheckedFunctionDecls.count(func)) {
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return;
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}
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CheckedFunctionDecls.insert(func);
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const ClassTemplateSpecializationDecl *Spec =
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Result.Nodes.getNodeAs<ClassTemplateSpecializationDecl>("spec");
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for (ParmVarDecl *p : func->parameters()) {
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QualType T = p->getType().withoutLocalFastQualifiers();
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if (NonParam.hasEffectiveAnnotation(T)) {
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diag(p->getLocation(), "Type %0 must not be used as parameter",
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DiagnosticIDs::Error) << T;
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diag(p->getLocation(), "Please consider passing a const reference instead",
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DiagnosticIDs::Note);
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if (Spec) {
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diag(Spec->getPointOfInstantiation(),
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"The bad argument was passed to %0 here",
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DiagnosticIDs::Note)
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<< Spec->getSpecializedTemplate();
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}
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}
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}
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}
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