[clang-tools-extra] r307812 - [clang-tidy] Ignore blank spaces between cast's ")" and its sub expr.

[Haojian Wu via cfe-commits]

Author: hokein
Date: Wed Jul 12 09:38:59 2017
New Revision: 307812

URL: http://llvm.org/viewvc/llvm-project?rev=307812&view=rev
Log:
[clang-tidy] Ignore blank spaces between cast's ")" and its sub expr.

Summary:
Before the change:

`auto i = (Enum) 5;` => `auto i = static_cast<Enum>( 5);`

After the change:

`auto i = (Enum) 5;` => `auto i = static_cast<Enum>(5);`

Reviewers: alexfh

Reviewed By: alexfh

Subscribers: JDevlieghere, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D31700

Modified:
    clang-tools-extra/trunk/clang-tidy/google/AvoidCStyleCastsCheck.cpp
    clang-tools-extra/trunk/test/clang-tidy/google-readability-casting.cpp

Modified: clang-tools-extra/trunk/clang-tidy/google/AvoidCStyleCastsCheck.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clang-tidy/google/AvoidCStyleCastsCheck.cpp?rev=307812&r1=307811&r2=307812&view=diff
==============================================================================
--- clang-tools-extra/trunk/clang-tidy/google/AvoidCStyleCastsCheck.cpp (original)
+++ clang-tools-extra/trunk/clang-tidy/google/AvoidCStyleCastsCheck.cpp Wed Jul 12 09:38:59 2017
@@ -58,10 +58,9 @@ static bool pointedUnqualifiedTypesAreEq
 
 void AvoidCStyleCastsCheck::check(const MatchFinder::MatchResult &Result) {
   const auto *CastExpr = Result.Nodes.getNodeAs<CStyleCastExpr>("cast");
-  auto ParenRange = CharSourceRange::getTokenRange(CastExpr->getLParenLoc(),
-                                                   CastExpr->getRParenLoc());
+
   // Ignore casts in macros.
-  if (ParenRange.getBegin().isMacroID() || ParenRange.getEnd().isMacroID())
+  if (CastExpr->getExprLoc().isMacroID())
     return;
 
   // Casting to void is an idiomatic way to mute "unused variable" and similar
@@ -82,6 +81,9 @@ void AvoidCStyleCastsCheck::check(const
   const QualType SourceType = SourceTypeAsWritten.getCanonicalType();
   const QualType DestType = DestTypeAsWritten.getCanonicalType();
 
+  auto ReplaceRange = CharSourceRange::getCharRange(
+      CastExpr->getLParenLoc(), CastExpr->getSubExprAsWritten()->getLocStart());
+
   bool FnToFnCast =
       isFunction(SourceTypeAsWritten) && isFunction(DestTypeAsWritten);
 
@@ -92,7 +94,7 @@ void AvoidCStyleCastsCheck::check(const
     // pointer/reference types.
     if (SourceTypeAsWritten == DestTypeAsWritten) {
       diag(CastExpr->getLocStart(), "redundant cast to the same type")
-          << FixItHint::CreateRemoval(ParenRange);
+          << FixItHint::CreateRemoval(ReplaceRange);
       return;
     }
   }
@@ -136,7 +138,7 @@ void AvoidCStyleCastsCheck::check(const
                                      getLangOpts()),
           ")");
     }
-    Diag << FixItHint::CreateReplacement(ParenRange, CastText);
+    Diag << FixItHint::CreateReplacement(ReplaceRange, CastText);
   };
   auto ReplaceWithNamedCast = [&](StringRef CastType) {
     Diag << CastType;

Modified: clang-tools-extra/trunk/test/clang-tidy/google-readability-casting.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/test/clang-tidy/google-readability-casting.cpp?rev=307812&r1=307811&r2=307812&view=diff
==============================================================================
--- clang-tools-extra/trunk/test/clang-tidy/google-readability-casting.cpp (original)
+++ clang-tools-extra/trunk/test/clang-tidy/google-readability-casting.cpp Wed Jul 12 09:38:59 2017
@@ -85,6 +85,22 @@ void f(int a, double b, const char *cpc,
   // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: {{.*}}; use static_cast/const_cast/reinterpret_cast [
   // CHECK-FIXES: b1 = (const int&)b;
 
+  b1 = (int) b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: {{.*}}; use static_cast {{.*}}
+  // CHECK-FIXES: b1 = static_cast<int>(b);
+
+  b1 = (int)         b;
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: {{.*}}; use static_cast {{.*}}
+  // CHECK-FIXES: b1 = static_cast<int>(b);
+
+  b1 = (int) (b);
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: {{.*}}; use static_cast {{.*}}
+  // CHECK-FIXES: b1 = static_cast<int>(b);
+
+  b1 = (int)         (b);
+  // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: {{.*}}; use static_cast {{.*}}
+  // CHECK-FIXES: b1 = static_cast<int>(b);
+
   Y *pB = (Y*)pX;
   // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: {{.*}}; use static_cast/const_cast/reinterpret_cast [
   Y &rB = (Y&)*pX;
@@ -114,6 +130,14 @@ void f(int a, double b, const char *cpc,
   // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: redundant cast to the same type
   // CHECK-FIXES: {{^}}  e = e;
 
+  e = (Enum)           e;
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: redundant cast to the same type
+  // CHECK-FIXES: {{^}}  e = e;
+
+  e = (Enum)           (e);
+  // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: redundant cast to the same type
+  // CHECK-FIXES: {{^}}  e = (e);
+
   static const int kZero = 0;
   (int)kZero;
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: redundant cast to the same type