clang-tools 10.0.0

DurationDivisionCheck.cpp
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1 //===--- DurationDivisionCheck.cpp - clang-tidy----------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "DurationDivisionCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12
13 namespace clang {
14 namespace tidy {
15 namespace abseil {
16
17 using namespace clang::ast_matchers;
18
19 void DurationDivisionCheck::registerMatchers(MatchFinder *finder) {
20 if (!getLangOpts().CPlusPlus)
21 return;
22
23 const auto DurationExpr =
24 expr(hasType(cxxRecordDecl(hasName("::absl::Duration"))));
25 finder->addMatcher(
26 implicitCastExpr(
27 hasSourceExpression(ignoringParenCasts(
28 cxxOperatorCallExpr(hasOverloadedOperatorName("/"),
29 hasArgument(0, DurationExpr),
30 hasArgument(1, DurationExpr))
31 .bind("OpCall"))),
32 hasImplicitDestinationType(qualType(unless(isInteger()))),
33 unless(hasParent(cxxStaticCastExpr())),
34 unless(hasParent(cStyleCastExpr())),
35 unless(isInTemplateInstantiation())),
36 this);
37 }
38
39 void DurationDivisionCheck::check(const MatchFinder::MatchResult &result) {
40 const auto *OpCall = result.Nodes.getNodeAs<CXXOperatorCallExpr>("OpCall");
41 diag(OpCall->getOperatorLoc(),
42 "operator/ on absl::Duration objects performs integer division; "
43 "did you mean to use FDivDuration()?")
44 << FixItHint::CreateInsertion(OpCall->getBeginLoc(),
45 "absl::FDivDuration(")
46 << FixItHint::CreateReplacement(
47 SourceRange(OpCall->getOperatorLoc(), OpCall->getOperatorLoc()),
48 ", ")
49 << FixItHint::CreateInsertion(
50 Lexer::getLocForEndOfToken(
51 result.SourceManager->getSpellingLoc(OpCall->getEndLoc()), 0,
52 *result.SourceManager, result.Context->getLangOpts()),
53 ")");
54 }
55
56 } // namespace abseil
57 } // namespace tidy
58 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
DurationDivisionCheck.h
clang::tidy::abseil::DurationDivisionCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition: DurationDivisionCheck.cpp:39
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
clang::tidy::abseil::DurationDivisionCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *finder) override
Override this to register AST matchers with Finder.
Definition: DurationDivisionCheck.cpp:19