[PATCH] D128709: [clang-format] Handle Verilog attributes

[sstwcw via Phabricator via cfe-commits]

sstwcw created this revision.
sstwcw added reviewers: HazardyKnusperkeks, MyDeveloperDay, curdeius, owenpan.
Herald added a project: All.
sstwcw requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128709

Files:
  clang/lib/Format/TokenAnnotator.cpp
  clang/lib/Format/UnwrappedLineParser.cpp
  clang/unittests/Format/FormatTestVerilog.cpp


Index: clang/unittests/Format/FormatTestVerilog.cpp
===================================================================
--- clang/unittests/Format/FormatTestVerilog.cpp
+++ clang/unittests/Format/FormatTestVerilog.cpp
@@ -71,6 +71,12 @@
 TEST_F(FormatTestVerilog, If) {
   verifyFormat("if (x)\n"
                "  x = x;");
+  verifyFormat("unique if (x)\n"
+               "  x = x;");
+  verifyFormat("unique0 if (x)\n"
+               "  x = x;");
+  verifyFormat("priority if (x)\n"
+               "  x = x;");
   verifyFormat("if (x)\n"
                "  x = x;\n"
                "x = x;");
@@ -137,6 +143,14 @@
                "  x = {x};\n"
                "else\n"
                "  {x} = {x};");
+
+  // With attributes.
+  verifyFormat("(* x *) if (x)\n"
+               "  x = x;");
+  verifyFormat("(* x = \"x\" *) if (x)\n"
+               "  x = x;");
+  verifyFormat("(* x, x = \"x\" *) if (x)\n"
+               "  x = x;");
 }
 
 TEST_F(FormatTestVerilog, Preprocessor) {
Index: clang/lib/Format/UnwrappedLineParser.cpp
===================================================================
--- clang/lib/Format/UnwrappedLineParser.cpp
+++ clang/lib/Format/UnwrappedLineParser.cpp
@@ -1456,6 +1456,26 @@
     addUnwrappedLine();
     return;
   }
+
+  if (Style.isVerilog()) {
+    // Skip things that can exist before keywords like 'if' and 'case'.
+    while (true) {
+      if (FormatTok->isOneOf(Keywords.kw_priority, Keywords.kw_unique,
+                             Keywords.kw_unique0)) {
+        nextToken();
+      } else if (FormatTok->is(tok::l_paren)) {
+        const FormatToken *Next = Tokens->peekNextToken();
+        if (Next && Next->is(tok::star))
+          parseParens();
+        else
+          break;
+      } else {
+        break;
+      }
+    }
+  }
+
+  // Tokens that only make sense at the beginning of a line.
   switch (FormatTok->Tok.getKind()) {
   case tok::kw_asm:
     nextToken();
Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -3957,6 +3957,9 @@
           Left.MatchingParen->endsSequence(tok::l_paren, tok::at)))) {
       return true;
     }
+    // Add space in attribute like `(* ASYNC_REG = "TRUE" *)`.
+    if (Left.endsSequence(tok::star, tok::l_paren) && Right.is(tok::identifier))
+      return true;
   }
   if (Left.is(TT_ImplicitStringLiteral))
     return Right.hasWhitespaceBefore();


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