Mojo: Mojom: Add AST types for methods, interface bodies, and interfaces.

mojo/public/tools/bindings/pylib/mojom/parse/parser.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.
 
 """Generates a syntax tree from a Mojo IDL file."""
 
 import imp
 import os.path
 import sys
 
@@ skipping 179 matching lines @@
     """default : """
     p[0] = None
 
   def p_default_2(self, p):
     """default : EQUALS constant"""
     p[0] = p[2]
 
   def p_interface(self, p):
     """interface : attribute_section INTERFACE NAME LBRACE interface_body \
                        RBRACE SEMI"""
-    p[0] = ('INTERFACE', p[3], p[1], p[5])
+    p[0] = ast.Interface(p[3], p[1], p[5])
 
-  def p_interface_body(self, p):
-    """interface_body : method interface_body
-                      | enum interface_body
-                      | const interface_body
-                      | """
-    if len(p) > 1:
-      p[0] = _ListFromConcat(p[1], p[2])
+  def p_interface_body_1(self, p):
+    """interface_body : """
+    p[0] = ast.InterfaceBody()
 
-  def p_response(self, p):
-    """response : RESPONSE LPAREN parameter_list RPAREN
-                | """
-    if len(p) > 3:
-      p[0] = p[3]
+  def p_interface_body_2(self, p):
+    """interface_body : interface_body const
+                      | interface_body enum
+                      | interface_body method"""
+    p[0] = p[1]
+    p[0].Append(p[2])
+
+  def p_response_1(self, p):
+    """response : """
+    p[0] = None
+
+  def p_response_2(self, p):
+    """response : RESPONSE LPAREN parameter_list RPAREN"""
+    p[0] = p[3]
 
   def p_method(self, p):
     """method : NAME ordinal LPAREN parameter_list RPAREN response SEMI"""
-    p[0] = ('METHOD', p[1], p[4], p[2], p[6])
+    p[0] = ast.Method(p[1], p[2], p[4], p[6])
 
   def p_parameter_list_1(self, p):
     """parameter_list : """
     p[0] = ast.ParameterList()
 
   def p_parameter_list_2(self, p):
     """parameter_list : nonempty_parameter_list"""
     p[0] = p[1]
 
   def p_nonempty_parameter_list_1(self, p):
@@ skipping 151 matching lines @@
 
 def Parse(source, filename):
   lexer = Lexer(filename)
   parser = Parser(lexer, source, filename)
 
   lex.lex(object=lexer)
   yacc.yacc(module=parser, debug=0, write_tables=0)
 
   tree = yacc.parse(source)
   return tree