From f356a43d13a15542719b3d7f912e0b441aa4c075 Mon Sep 17 00:00:00 2001
From: "Jay Freeman (saurik)" <saurik@saurik.com>
Date: Thu, 17 Dec 2015 02:06:15 -0800
Subject: [PATCH] Use syntax-directed lexing to remove LexSetRegExp.

---
 Parser.ypp.in  | 16 ++++++++++++++--
 Scanner.lpp.in |  2 +-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Parser.ypp.in b/Parser.ypp.in
index 5b0c18b..923a01b 100644
--- a/Parser.ypp.in
+++ b/Parser.ypp.in
@@ -447,7 +447,7 @@ _finline int yylex(cy::parser::semantic_type *semantic, CYLocation *location, CY
 %token <identifier_> Identifier_
 %token <number_> NumericLiteral
 %token <string_> StringLiteral
-%token <literal_> RegularExpressionLiteral
+%token <literal_> RegularExpressionLiteral_
 
 %token <string_> NoSubstitutionTemplate
 %token <string_> TemplateHead
@@ -570,6 +570,8 @@ _finline int yylex(cy::parser::semantic_type *semantic, CYLocation *location, CY
 %type <property_> PropertyDefinitionList
 %type <property_> PropertyDefinitionListOpt
 %type <declaration_> PropertySetParameterList
+%type <literal_> RegularExpressionLiteral
+%type <bool_> RegularExpressionSlash
 %type <expression_> RelationalExpression
 %type <statement_> ReturnStatement
 %type <rubyProc_> RubyProcExpression
@@ -714,7 +716,7 @@ LexOf
     ;
 
 LexSetRegExp
-    : { CYLEX(); if (yyla.type == yytranslate_(token::Slash)) { yyla.clear(); driver.SetRegEx(false); } else if (yyla.type == yytranslate_(token::SlashEqual)) { yyla.clear(); driver.SetRegEx(true); } } LexOf
+    : LexOf
     ;
 
 LexNewLine
@@ -826,6 +828,16 @@ BooleanLiteral
     | "false" { $$ = CYNew CYFalse(); }
     ;
 /* }}} */
+/* 11.8.5 Regular Expression Literals {{{ */
+RegularExpressionSlash
+    : "/" { $$ = false; }
+    | "/=" { $$ = true; }
+    ;
+
+RegularExpressionLiteral
+    : RegularExpressionSlash { CYMPT(@$); driver.SetRegEx($1); } RegularExpressionLiteral_ { $$ = $3; }
+    ;
+/* }}} */
 
 /* 11.9 Automatic Semicolon Insertion {{{ */
 StrictSemi
diff --git a/Scanner.lpp.in b/Scanner.lpp.in
index 399feb8..c2aa6e4 100644
--- a/Scanner.lpp.in
+++ b/Scanner.lpp.in
@@ -279,7 +279,7 @@ XMLName {XMLNameStart}{XMLNamePart}*
 
     /* RegEx {{{ */
 <RegularExpression>{
-    \/{UnicodePart}* R CYLexBufferUnits(yytext, yyleng); CYLexBufferEnd(literal, RegEx, tk::RegularExpressionLiteral, hi::Constant);
+    \/{UnicodePart}* R CYLexBufferUnits(yytext, yyleng); CYLexBufferEnd(literal, RegEx, tk::RegularExpressionLiteral_, hi::Constant);
     \/{UnicodePart}*{UnicodeError} R E("invalid character");
 
     {RegExCharacter}+ R CYLexBufferUnits(yytext, yyleng);
-- 
2.49.0