[clang-tidy] Fix bugprone-argument-comment bug: negative literal number is not checked.
Summary: For example: ``` void foo(int a); foo(-2); ``` should be fixed as: ``` foo(/*a=*/-2); ``` This change tries to fix this issue. Reviewers: alexfh, hokein, aaron.ballman Reviewed By: alexfh, aaron.ballman Subscribers: xazax.hun, cfe-commits Tags: #clang, #clang-tools-extra Patch by Yubo Xie. Differential Revision: https://reviews.llvm.org/D67084 llvm-svn: 371072
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@ -230,9 +230,11 @@ static const FunctionDecl *resolveMocks(const FunctionDecl *Func) {
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// Given the argument type and the options determine if we should
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// be adding an argument comment.
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bool ArgumentCommentCheck::shouldAddComment(const Expr *Arg) const {
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Arg = Arg->IgnoreImpCasts();
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if (isa<UnaryOperator>(Arg))
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Arg = cast<UnaryOperator>(Arg)->getSubExpr();
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if (Arg->getExprLoc().isMacroID())
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return false;
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Arg = Arg->IgnoreImpCasts();
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return (CommentBoolLiterals && isa<CXXBoolLiteralExpr>(Arg)) ||
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(CommentIntegerLiterals && isa<IntegerLiteral>(Arg)) ||
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(CommentFloatLiterals && isa<FloatingLiteral>(Arg)) ||
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@ -69,18 +69,29 @@ void test() {
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'fabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*fabc=*/1.0f);
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a.foo(-1.0f);
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'fabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*fabc=*/-1.0f);
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a.foo(1.0);
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'dabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*dabc=*/1.0);
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a.foo(-1.0);
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'dabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*dabc=*/-1.0);
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int val3 = 10;
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a.foo(val3);
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a.foo(-val3);
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float val4 = 10.0;
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a.foo(val4);
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a.foo(-val4);
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double val5 = 10.0;
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a.foo(val5);
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a.foo(-val5);
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a.foo("Hello World");
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'strabc' [bugprone-argument-comment]
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@ -98,14 +109,22 @@ void test() {
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'dabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*dabc=*/402.0_km);
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a.foo(-402.0_km);
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'dabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*dabc=*/-402.0_km);
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a.foo('A');
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// CHECK-MESSAGES: [[@LINE-1]]:9: warning: argument comment missing for literal argument 'chabc' [bugprone-argument-comment]
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// CHECK-FIXES: a.foo(/*chabc=*/'A');
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g(FOO);
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g(-FOO);
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h(1.0f);
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// CHECK-MESSAGES: [[@LINE-1]]:5: warning: argument comment missing for literal argument 'b' [bugprone-argument-comment]
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// CHECK-FIXES: h(/*b=*/1.0f);
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h(-1.0f);
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// CHECK-MESSAGES: [[@LINE-1]]:5: warning: argument comment missing for literal argument 'b' [bugprone-argument-comment]
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// CHECK-FIXES: h(/*b=*/-1.0f);
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i(__FILE__);
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j(1, X(1), X(1));
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