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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ArithmeticArgChecker.h"
#include "CustomMatchers.h"
void ArithmeticArgChecker::registerMatchers(MatchFinder *AstMatcher) {
AstMatcher->addMatcher(
callExpr(allOf(hasDeclaration(noArithmeticExprInArgs()),
anyOf(hasDescendant(
binaryOperator(
allOf(binaryArithmeticOperator(),
hasLHS(hasDescendant(declRefExpr())),
hasRHS(hasDescendant(declRefExpr()))))
.bind("node")),
hasDescendant(
unaryOperator(
allOf(unaryArithmeticOperator(),
hasUnaryOperand(allOf(
hasType(builtinType()),
anyOf(hasDescendant(declRefExpr()),
declRefExpr())))))
.bind("node")))))
.bind("call"),
this);
AstMatcher->addMatcher(
cxxConstructExpr(
allOf(hasDeclaration(noArithmeticExprInArgs()),
anyOf(hasDescendant(
binaryOperator(
allOf(binaryArithmeticOperator(),
hasLHS(hasDescendant(declRefExpr())),
hasRHS(hasDescendant(declRefExpr()))))
.bind("node")),
hasDescendant(
unaryOperator(
allOf(unaryArithmeticOperator(),
hasUnaryOperand(allOf(
hasType(builtinType()),
anyOf(hasDescendant(declRefExpr()),
declRefExpr())))))
.bind("node")))))
.bind("call"),
this);
}
void ArithmeticArgChecker::check(const MatchFinder::MatchResult &Result) {
const char *Error =
"cannot pass an arithmetic expression of built-in types to %0";
const Expr *Expression = Result.Nodes.getNodeAs<Expr>("node");
if (const CallExpr *Call = Result.Nodes.getNodeAs<CallExpr>("call")) {
diag(Expression->getBeginLoc(), Error, DiagnosticIDs::Error)
<< Call->getDirectCallee();
} else if (const CXXConstructExpr *Ctr =
Result.Nodes.getNodeAs<CXXConstructExpr>("call")) {
diag(Expression->getBeginLoc(), Error, DiagnosticIDs::Error)
<< Ctr->getConstructor();
}
}