ba007a60d0
These are identified by misc-include-cleaner. I've filtered out those that break builds. Also, I'm staying away from llvm-config.h, config.h, and Compiler.h, which likely cause platform- or compiler-specific build failures.
50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
//===--- IntegerDivisionCheck.cpp - clang-tidy-----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "IntegerDivisionCheck.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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using namespace clang::ast_matchers;
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namespace clang::tidy::bugprone {
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void IntegerDivisionCheck::registerMatchers(MatchFinder *Finder) {
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const auto IntType = hasType(isInteger());
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const auto BinaryOperators = binaryOperator(
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hasAnyOperatorName("%", "<<", ">>", "<<", "^", "|", "&", "||", "&&", "<",
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">", "<=", ">=", "==", "!="));
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const auto UnaryOperators = unaryOperator(hasAnyOperatorName("~", "!"));
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const auto Exceptions =
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anyOf(BinaryOperators, conditionalOperator(), binaryConditionalOperator(),
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callExpr(IntType), explicitCastExpr(IntType), UnaryOperators);
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Finder->addMatcher(
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traverse(TK_AsIs,
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binaryOperator(
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hasOperatorName("/"), hasLHS(expr(IntType)),
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hasRHS(expr(IntType)),
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hasAncestor(castExpr(hasCastKind(CK_IntegralToFloating))
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.bind("FloatCast")),
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unless(hasAncestor(expr(
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Exceptions,
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hasAncestor(castExpr(equalsBoundNode("FloatCast")))))))
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.bind("IntDiv")),
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this);
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}
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void IntegerDivisionCheck::check(const MatchFinder::MatchResult &Result) {
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const auto *IntDiv = Result.Nodes.getNodeAs<BinaryOperator>("IntDiv");
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diag(IntDiv->getBeginLoc(), "result of integer division used in a floating "
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"point context; possible loss of precision");
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}
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} // namespace clang::tidy::bugprone
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