[clang] 5426b2f - [clang-format] PR48535 clang-format Incorrectly Removes Space After C Style Cast When Type Is Not a Pointer

[via cfe-commits]

Author: mydeveloperday
Date: 2020-12-23T14:45:14Z
New Revision: 5426b2f9ed9f6f3a3e1d6452325f7a49a5d08ec4

URL: https://github.com/llvm/llvm-project/commit/5426b2f9ed9f6f3a3e1d6452325f7a49a5d08ec4
DIFF: https://github.com/llvm/llvm-project/commit/5426b2f9ed9f6f3a3e1d6452325f7a49a5d08ec4.diff

LOG: [clang-format] PR48535 clang-format Incorrectly Removes Space After C Style Cast When Type Is Not a Pointer

https://bugs.llvm.org/show_bug.cgi?id=48535

using `SpaceAfterCStyleCast: true`

```
size_t idx = (size_t) a;
size_t idx = (size_t) (a - 1);
```

is formatted as:

```
size_t idx = (size_t) a;
size_t idx = (size_t)(a - 1);
```

This revision aims to improve that by improving the function which tries to identify a CastRParen

Reviewed By: curdeius

Differential Revision: https://reviews.llvm.org/D93626

Added: 
    

Modified: 
    clang/lib/Format/TokenAnnotator.cpp
    clang/unittests/Format/FormatTest.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 733ca1e0e852..a0cb86cfcebf 100755
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -1915,6 +1915,13 @@ class AnnotatingParser {
     if (Tok.Next->isOneOf(tok::identifier, tok::kw_this))
       return true;
 
+    if (Tok.Next->is(tok::l_paren) &&
+        !(Tok.Previous && Tok.Previous->is(tok::identifier) &&
+          Tok.Previous->Previous &&
+          Tok.Previous->Previous->isOneOf(tok::arrowstar, tok::arrow,
+                                          tok::star)))
+      return true;
+
     if (!Tok.Next->Next)
       return false;
 

diff  --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index d2aed304f213..ee757c14eafb 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -11989,6 +11989,20 @@ TEST_F(FormatTest, ConfigurableSpacesInParentheses) {
                "  do_something((int) i);\n"
                "} while (something( ));",
                Spaces);
+
+  verifyFormat("size_t idx = (size_t) (ptr - ((char *) file));", Spaces);
+  verifyFormat("size_t idx = (size_t) a;", Spaces);
+  verifyFormat("size_t idx = (size_t) (a - 1);", Spaces);
+  verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
+  verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
+  verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
+  Spaces.SpaceAfterCStyleCast = false;
+  verifyFormat("size_t idx = (size_t)(ptr - ((char *)file));", Spaces);
+  verifyFormat("size_t idx = (size_t)a;", Spaces);
+  verifyFormat("size_t idx = (size_t)(a - 1);", Spaces);
+  verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
+  verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
+  verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
 }
 
 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) {