Experimental parser: misc fixes.

src/lexer/lexer.re

 // Portions of this code based on re2c:
 //   (re2c/examples/push.re)
 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 253 matching lines @@
     <Normal> "="           { PUSH_TOKEN(Token::ASSIGN); }
     <Normal> "!=="         { PUSH_TOKEN(Token::NE_STRICT); }
     <Normal> "!="          { PUSH_TOKEN(Token::NE); }
     <Normal> "!"           { PUSH_TOKEN(Token::NOT); }
 
     <Normal> "//"          :=> SingleLineComment
     <Normal> "/*"          :=> MultiLineComment
     <Normal> "<!--"        :=> HtmlComment
 
     <Normal> ">>>="        { PUSH_TOKEN(Token::ASSIGN_SHR); }
+    <Normal> ">>>"         { PUSH_TOKEN(Token::SHR); }
     <Normal> "<<="         { PUSH_TOKEN(Token::ASSIGN_SHL); }
     <Normal> ">>="         { PUSH_TOKEN(Token::ASSIGN_SAR); }
     <Normal> "<="          { PUSH_TOKEN(Token::LTE); }
     <Normal> ">="          { PUSH_TOKEN(Token::GTE); }
     <Normal> "<<"          { PUSH_TOKEN(Token::SHL); }
     <Normal> ">>"          { PUSH_TOKEN(Token::SAR); }
     <Normal> "<"           { PUSH_TOKEN(Token::LT); }
     <Normal> ">"           { PUSH_TOKEN(Token::GT); }
 
     <Normal> '0x' hex_digit+ not_identifier_char                     { PUSH_TOKEN_LOOKAHEAD(Token::NUMBER); }
@@ skipping 34 matching lines @@
     <Normal> [']           :=> SingleQuoteString
 
     <Normal> identifier_start_    :=> Identifier
     <Normal> "\\u0000"            :=> IdentifierIllegal
     <Normal> "\\u" [0-9a-fA-F]{4}    :=> Identifier
     <Normal> "\\"                 { PUSH_TOKEN(Token::ILLEGAL); }
 
     <Normal> eof           { PUSH_EOF_AND_RETURN();}
     <Normal> any           { PUSH_TOKEN(Token::ILLEGAL); }
 
+    <DoubleQuoteString> "\\\\"  { goto yy0; }
     <DoubleQuoteString> "\\\""  { goto yy0; }
     <DoubleQuoteString> '"'     { PUSH_TOKEN(Token::STRING);}
     <DoubleQuoteString> "\\" "\n" "\r"? { goto yy0; }
     <DoubleQuoteString> "\\" "\r" "\n"? { goto yy0; }
     <DoubleQuoteString> "\n"    => Normal { PUSH_TOKEN_LOOKAHEAD(Token::ILLEGAL); }
     <DoubleQuoteString> "\r"    => Normal { PUSH_TOKEN_LOOKAHEAD(Token::ILLEGAL); }
     <DoubleQuoteString> eof     { TERMINATE_ILLEGAL(); }
     <DoubleQuoteString> any     { goto yy0; }
 
+    <SingleQuoteString> "\\\\"  { goto yy0; }
     <SingleQuoteString> "\\'"   { goto yy0; }
     <SingleQuoteString> "'"     { PUSH_TOKEN(Token::STRING);}
     <SingleQuoteString> "\\" "\n" "\r"? { goto yy0; }
     <SingleQuoteString> "\\" "\r" "\n"? { goto yy0; }
     <SingleQuoteString> "\n"    => Normal { PUSH_TOKEN_LOOKAHEAD(Token::ILLEGAL); }
     <SingleQuoteString> "\r"    => Normal { PUSH_TOKEN_LOOKAHEAD(Token::ILLEGAL); }
     <SingleQuoteString> eof     { TERMINATE_ILLEGAL(); }
     <SingleQuoteString> any     { goto yy0; }
 
     <Identifier> identifier_char+  { goto yy0; }
     <Identifier> "\\u0000"         :=> IdentifierIllegal
     <Identifier> "\\u" [0-9a-fA-F]{4} { goto yy0; }
     <Identifier> "\\"              { PUSH_TOKEN(Token::ILLEGAL); }
     <Identifier> any               { PUSH_TOKEN_LOOKAHEAD(Token::IDENTIFIER); }
 
     <IdentifierIllegal> identifier_char+  { goto yy0; }
     <IdentifierIllegal> "\\"+              { goto yy0; }
     <IdentifierIllegal> any               { PUSH_TOKEN_LOOKAHEAD(Token::ILLEGAL); }
 
     <SingleLineComment> line_terminator { PUSH_LINE_TERMINATOR();}
-    <SingleLineComment> eof             { PUSH_LINE_TERMINATOR();}
+    <SingleLineComment> eof             { PUSH_TOKEN(Token::EOS); }
     <SingleLineComment> any             { goto yy0; }
 
     <MultiLineComment> [*][//]  { PUSH_LINE_TERMINATOR();}
     <MultiLineComment> eof      { TERMINATE_ILLEGAL(); }
     <MultiLineComment> any      { goto yy0; }
 
     <HtmlComment> eof        { TERMINATE_ILLEGAL(); }
     <HtmlComment> "-->"      { PUSH_LINE_TERMINATOR();}
     <HtmlComment> any        { goto yy0; }
     */
@@ skipping 24 matching lines @@
     size_t start_offset = start_ - buffer_;
     memmove(buffer_, start_, limit_ - start_);
     marker_ -= start_offset;
     cursor_ -= start_offset;
     limit_ -= start_offset;
     start_ -= start_offset;
     real_start_ += start_offset;
   }
   return 0;
 }