Create response_parameters as part of mojom

mojo/public/bindings/pylib/parse/mojo_lexer.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import re
 import sys
 import os.path
 
 # Try to load the ply module, if not, then assume it is in the third_party
 # directory.
@@ skipping 63 matching lines @@
     'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
     'LOR', 'LAND', 'LNOT',
     'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
 
     # Assignment
     'EQUALS',
 
     # Conditional operator (?)
     'CONDOP',
 
+    # Request / response
+    'RESPONSE',
+
     # Delimeters
     'LPAREN', 'RPAREN',         # ( )
     'LBRACKET', 'RBRACKET',     # [ ]
     'LBRACE', 'RBRACE',         # { }
     'SEMI', 'COLON',            # ; :
     'COMMA', 'DOT'              # , .
   )
 
   ##
   ## Regexes for use in tokens
@@ skipping 88 matching lines @@
   t_GE                = r'>='
   t_EQ                = r'=='
   t_NE                = r'!='
 
   # =
   t_EQUALS            = r'='
 
   # ?
   t_CONDOP            = r'\?'
 
+  # =>
+  t_RESPONSE          = r'=>'
+
   # Delimeters
   t_LPAREN            = r'\('
   t_RPAREN            = r'\)'
   t_LBRACKET          = r'\['
   t_RBRACKET          = r'\]'
   t_LBRACE            = r'\{'
   t_RBRACE            = r'\}'
   t_COMMA             = r','
   t_DOT               = r'.'
   t_SEMI              = r';'
@@ skipping 70 matching lines @@
     return t
 
   # Ignore C and C++ style comments
   def t_COMMENT(self, t):
     r'(/\*(.|\n)*?\*/)|(//.*(\n[ \t]*//.*)*)'
     pass
 
   def t_error(self, t):
     msg = 'Illegal character %s' % repr(t.value[0])
     self._error(msg, t)