[clang-format] Recognize Verilog type dimension in module header

We had the function `verilogGroupDecl` for that.  However, the type
name would be incorrectly annotated in `isStartOfName` when it was not
a C++ keyword and followed another identifier.

Reviewed By: HazardyKnusperkeks, owenpan, MyDeveloperDay

Differential Revision: https://reviews.llvm.org/D149352

clang/lib/Format/TokenAnnotator.cpp

@@ -2165,6 +2165,10 @@ class AnnotatingParser {
   /// This is a heuristic based on whether \p Tok is an identifier following
   /// something that is likely a type.
   bool isStartOfName(const FormatToken &Tok) {
+    // Handled in ExpressionParser for Verilog.
+    if (Style.isVerilog())
+      return false;
+
     if (Tok.isNot(tok::identifier) || !Tok.Previous)
       return false;
 

clang/unittests/Format/FormatTestVerilog.cpp

@@ -359,6 +359,12 @@ TEST_F(FormatTestVerilog, Headers) {
                "     input var shortreal in2,\n"
                "     output tagged_st out);\n"
                "endmodule");
+  // There should be a space following the type but not the variable name.
+  verifyFormat("module test\n"
+               "    (input wire [7 : 0] a,\n"
+               "     input wire b[7 : 0],\n"
+               "     input wire [7 : 0] c[7 : 0]);\n"
+               "endmodule");
   // Ports should be grouped by types.
   verifyFormat("module test\n"
                "    (input [7 : 0] a,\n"

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -1615,6 +1615,13 @@ TEST_F(TokenAnnotatorTest, UnderstandsVerilogOperators) {
   Tokens = Annotate("extern function [1 : 0] x;");
   ASSERT_EQ(Tokens.size(), 10u) << Tokens;
   EXPECT_TOKEN(Tokens[4], tok::colon, TT_BitFieldColon);
+  Tokens = Annotate("module test\n"
+                    "    (input wire [7 : 0] a[7 : 0]);\n"
+                    "endmodule");
+  ASSERT_EQ(Tokens.size(), 20u) << Tokens;
+  EXPECT_TOKEN(Tokens[4], tok::identifier, TT_VerilogDimensionedTypeName);
+  EXPECT_TOKEN(Tokens[7], tok::colon, TT_BitFieldColon);
+  EXPECT_TOKEN(Tokens[13], tok::colon, TT_BitFieldColon);
   // Test case labels and ternary operators.
   Tokens = Annotate("case (x)\n"
                     "  x:\n"