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[clang-tidy] Fixed abseil-time-subtraction to work on C++17 

Summary: Fixed abseil-time-subtraction to work on C++17

Reviewers: hokein, gribozavr

Subscribers: xazax.hun, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D63261

Patch by Johan Vikström.

llvm-svn: 363272
This commit is contained in:
Dmitri Gribenko 2019-06-13 15:11:02 +00:00
parent 8f30e322ab
commit 0030306555
2 changed files with 36 additions and 17 deletions
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51
clang-tools-extra/clang-tidy/abseil/TimeSubtractionCheck.cpp
View File

@ -29,33 +29,52 @@ static bool InsideMacroDefinition(const MatchFinder::MatchResult &Result,
static bool isConstructorAssignment(const MatchFinder::MatchResult &Result,
const Expr *Node) {
// For C++14 and earlier there are elidable constructors that must be matched
// in hasParent. The elidable constructors do not exist in C++17 and later and
// therefore an additional check that does not match against the elidable
// constructors are needed for this case.
return selectFirst<const Expr>(
"e", match(expr(hasParent(materializeTemporaryExpr(hasParent(
cxxConstructExpr(hasParent(exprWithCleanups(
hasParent(varDecl()))))))))
.bind("e"),
*Node, *Result.Context)) != nullptr;
"e",
match(expr(anyOf(
callExpr(hasParent(materializeTemporaryExpr(hasParent(
cxxConstructExpr(hasParent(exprWithCleanups(
hasParent(varDecl()))))))))
.bind("e"),
callExpr(hasParent(varDecl())).bind("e"))),
*Node, *Result.Context)) != nullptr;
}
static bool isArgument(const MatchFinder::MatchResult &Result,
const Expr *Node) {
// For the same reason as in isConstructorAssignment two AST shapes need to be
// matched here.
return selectFirst<const Expr>(
"e",
match(expr(hasParent(
materializeTemporaryExpr(hasParent(cxxConstructExpr(
hasParent(callExpr()),
unless(hasParent(cxxOperatorCallExpr())))))))
.bind("e"),
*Node, *Result.Context)) != nullptr;
match(
expr(anyOf(
expr(hasParent(materializeTemporaryExpr(
hasParent(cxxConstructExpr(
hasParent(callExpr()),
unless(hasParent(cxxOperatorCallExpr())))))))
.bind("e"),
expr(hasParent(callExpr()),
unless(hasParent(cxxOperatorCallExpr())))
.bind("e"))),
*Node, *Result.Context)) != nullptr;
}
static bool isReturn(const MatchFinder::MatchResult &Result, const Expr *Node) {
// For the same reason as in isConstructorAssignment two AST shapes need to be
// matched here.
return selectFirst<const Expr>(
"e", match(expr(hasParent(materializeTemporaryExpr(hasParent(
cxxConstructExpr(hasParent(exprWithCleanups(
hasParent(returnStmt()))))))))
.bind("e"),
*Node, *Result.Context)) != nullptr;
"e",
match(expr(anyOf(
expr(hasParent(materializeTemporaryExpr(hasParent(
cxxConstructExpr(hasParent(exprWithCleanups(
hasParent(returnStmt()))))))))
.bind("e"),
expr(hasParent(returnStmt())).bind("e"))),
*Node, *Result.Context)) != nullptr;
}
static bool parensRequired(const MatchFinder::MatchResult &Result,

2
clang-tools-extra/test/clang-tidy/abseil-time-subtraction.cpp
View File

@ -1,4 +1,4 @@
// RUN: %check_clang_tidy -std=c++11,c++14 %s abseil-time-subtraction %t -- -- -I %S/Inputs
// RUN: %check_clang_tidy -std=c++11-or-later %s abseil-time-subtraction %t -- -- -I %S/Inputs
// FIXME: Fix the checker to work in C++17 mode.
#include "absl/time/time.h"