blob: e6a67e0ad3266e8dd5c2ed87c64e444f5a1ed901 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
//===--- DefaultArgumentsCheck.cpp - clang-tidy----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DefaultArgumentsCheck.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace fuchsia {
void DefaultArgumentsCheck::registerMatchers(MatchFinder *Finder) {
// Calling a function which uses default arguments is disallowed.
Finder->addMatcher(cxxDefaultArgExpr().bind("stmt"), this);
// Declaring default parameters is disallowed.
Finder->addMatcher(parmVarDecl(hasDefaultArgument()).bind("decl"), this);
}
void DefaultArgumentsCheck::check(const MatchFinder::MatchResult &Result) {
if (const auto *S =
Result.Nodes.getNodeAs<CXXDefaultArgExpr>("stmt")) {
diag(S->getUsedLocation(),
"calling a function that uses a default argument is disallowed");
diag(S->getParam()->getBeginLoc(), "default parameter was declared here",
DiagnosticIDs::Note);
} else if (const ParmVarDecl *D =
Result.Nodes.getNodeAs<ParmVarDecl>("decl")) {
SourceRange DefaultArgRange = D->getDefaultArgRange();
if (DefaultArgRange.getEnd() != D->getEndLoc()) {
return;
} else if (DefaultArgRange.getBegin().isMacroID()) {
diag(D->getBeginLoc(),
"declaring a parameter with a default argument is disallowed");
} else {
SourceLocation StartLocation =
D->getName().empty() ? D->getBeginLoc() : D->getLocation();
SourceRange RemovalRange(Lexer::getLocForEndOfToken(
StartLocation, 0,
*Result.SourceManager,
Result.Context->getLangOpts()
),
DefaultArgRange.getEnd()
);
diag(D->getBeginLoc(),
"declaring a parameter with a default argument is disallowed")
<< D << FixItHint::CreateRemoval(RemovalRange);
}
}
}
} // namespace fuchsia
} // namespace tidy
} // namespace clang
|
