Reserve asterisk (*) as a punctuation token

Summary: Currently unused but reserving for potential future use.

Reviewed By: thedavekwon

Differential Revision: D67920813

fbshipit-source-id: 4d7915f37cd75d552f84b551577363f8b033729f

Author: praihan

third-party/thrift/src/thrift/compiler/whisker/test/lexer_test.cc

@@ -183,7 +183,7 @@ TEST_F(LexerTest, multiple_identifiers) {
 }
 
 TEST_F(LexerTest, ids_and_punctuations) {
-  auto lexer = make_lexer("{{ |. ! bas ^> = ic /# }}{{()}}");
+  auto lexer = make_lexer("{{ |. ! bas ^> =* ic /# }}{{()}}");
   const std::vector<token_description> expected = {
       {tok::open, {}},
       {tok::pipe, {}},
@@ -193,6 +193,7 @@ TEST_F(LexerTest, ids_and_punctuations) {
       {tok::caret, {}},
       {tok::gt, {}},
       {tok::eq, {}},
+      {tok::star, {}},
       {tok::identifier, "ic"},
       {tok::slash, {}},
       {tok::pound, {}},

third-party/thrift/src/thrift/compiler/whisker/token.cc

@@ -91,6 +91,7 @@ constexpr token_kind_info info[] = {
     {tok::pipe, "`|`"},
     {tok::gt, "`>`"},
     {tok::eq, "`=`"},
+    {tok::star, "`*`"},
 
 #define WHISKER_KEYWORD(kw) {tok::kw_##kw, "`" #kw "`"},
     WHISKER_KEYWORDS()

third-party/thrift/src/thrift/compiler/whisker/token.h

@@ -62,6 +62,7 @@ enum class tok : unsigned {
   pipe,      // "|"
   gt,        // ">"
   eq,        // "="
+  star,      // "*"
   // clang-format on
 
   // Literals:
@@ -114,6 +115,7 @@ constexpr tok to_tok(char c) {
     case '|': return tok::pipe;
     case '>': return tok::gt;
     case '=': return tok::eq;
+    case '*': return tok::star;
     default:
       return tok::error;
   }