[clang] [clang-format] Add support for additional C++ declaration specifiers in QualifierOrder (PR #160853)

[Björn Schäpers via cfe-commits]

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@@ -1384,6 +1397,65 @@ TEST_F(QualifierFixerTest, TemplatesLeft) {
                "TemplateType<Container const> t;", Style);
 }
 
+TEST_F(QualifierFixerTest, NewQualifierSupport) {
+  FormatStyle Style = getLLVMStyle();
+  Style.QualifierAlignment = FormatStyle::QAS_Custom;
+  
+  // Test typedef qualifier
+  Style.QualifierOrder = {"typedef", "type"};
+  verifyFormat("typedef int MyInt;", Style);
+  
+  // Test consteval qualifier
+  Style.QualifierOrder = {"consteval", "type"};
+  verifyFormat("consteval int func();", "int consteval func();", Style);
+  
+  // Test constinit qualifier
+  Style.QualifierOrder = {"constinit", "static", "type"};
+  verifyFormat("constinit static int var = 10;", "static constinit int var = 10;", Style);
+  
+  // Test thread_local qualifier
+  Style.QualifierOrder = {"thread_local", "static", "type"};
+  verifyFormat("thread_local static int counter;", "static thread_local int counter;", Style);
+  
+  // Test extern qualifier
+  Style.QualifierOrder = {"extern", "type"};
+  verifyFormat("extern int global_var;", "int extern global_var;", Style);
+  
+  // Test mutable qualifier
+  Style.QualifierOrder = {"mutable", "type"};
+  verifyFormat("mutable int cache;", "int mutable cache;", Style);
+  
+  // Test signed/unsigned qualifiers
+  Style.QualifierOrder = {"signed", "type"};
+  verifyFormat("signed int num;", "int signed num;", Style);
+  Style.QualifierOrder = {"unsigned", "type"};
+  verifyFormat("unsigned int num;", "int unsigned num;", Style);
+  
+  // Test long/short qualifiers
+  Style.QualifierOrder = {"long", "type"};
+  verifyFormat("long int num;", "int long num;", Style);
+  Style.QualifierOrder = {"short", "type"};
+  verifyFormat("short int num;", "int short num;", Style);
+  
+  // Test decltype qualifier
+  Style.QualifierOrder = {"decltype", "type"};
+  // Note: decltype is typically used with parentheses and doesn't usually get reordered
+  // This test mainly verifies it's recognized as a qualifier
+  
+  // Test explicit qualifier 
+  Style.QualifierOrder = {"explicit", "type"};
+  // Note: explicit is typically used with constructors and doesn't usually get reordered
+  // This test mainly verifies it's recognized as a qualifier
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HazardyKnusperkeks wrote:

Plainly drop it.

https://github.com/llvm/llvm-project/pull/160853