[clang] [clang-format] Add SpacesInParensOption for filtering repeated parens (PR #77522)

[Owen Pan via cfe-commits]

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@@ -17310,6 +17362,63 @@ TEST_F(FormatTest, ConfigurableSpacesInParens) {
   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
   verifyFormat("size_t idx = (*(foo))(a - 1);", Spaces);
+
+  // Check ExceptDoubleParentheses spaces
+  Spaces.IndentWidth = 2;
+  Spaces.SpacesInParens = FormatStyle::SIPO_Custom;
+  Spaces.SpacesInParensOptions = {};
+  Spaces.SpacesInParensOptions.Other = true;
+  Spaces.SpacesInParensOptions.ExceptDoubleParentheses = true;
+  verifyFormat("SomeType *__attribute__(( attr )) *a = NULL;", Spaces);
+  verifyFormat("void __attribute__(( naked )) foo( int bar )", Spaces);
+  verifyFormat("void f() __attribute__(( asdf ));", Spaces);
+  verifyFormat("__attribute__(( __aligned__( x ) )) z;", Spaces);
+  verifyFormat("int x __attribute__(( aligned( 16 ) )) = 0;", Spaces);
+  verifyFormat("class __declspec( dllimport ) X {};", Spaces);
+  verifyFormat("class __declspec(( dllimport )) X {};", Spaces);
+  verifyFormat("int x = ( ( a - 1 ) * 3 );", Spaces);
+  verifyFormat("int x = ( 3 * ( a - 1 ) );", Spaces);
+  verifyFormat("decltype( x ) y = 42;", Spaces);
+  verifyFormat("decltype(( bar( 10 ) )) a = bar( 11 );", Spaces);
+  verifyFormat("if (( i = j ))\n"
+               "  do_something( i );",
+               Spaces);
+
+  Spaces.SpacesInParens = FormatStyle::SIPO_Custom;
+  Spaces.SpacesInParensOptions = {};
+  Spaces.SpacesInParensOptions.InConditionalStatements = true;
+  Spaces.SpacesInParensOptions.ExceptDoubleParentheses = true;
+  verifyFormat("while ( (bool)1 )\n"
+               "  continue;",
+               Spaces);
+  verifyFormat("while ((i = j))\n"
+               "  continue;",
+               Spaces);
+  verifyFormat("do {\n"
+               "  do_something((int)i);\n"
+               "} while ( something() );",
+               Spaces);
+  verifyFormat("do {\n"
+               "  do_something((int)i);\n"
+               "} while ((i = i + 1));",
+               Spaces);
+  verifyFormat("if ( (x - y) && (a ^ b) )\n"
+               "  f();\n",
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owenca wrote:

Ditto.

https://github.com/llvm/llvm-project/pull/77522