diff

19a20,39
> class Table(object):
> 	def __init__(self, data):
> 		self.data = data
> 		self.parent = None
> 		self.child_tables = []
> 		self.variables = {}
> 
> 	def add_table(self, obj):
> 		self.child_tables.append(obj)
> 		obj.parent = self
> 
> 	def add_variable(self, obj, setType):
> 		if obj in self.variables:
> 			return False
> 		else:
> 			self.variables[obj] = {}
> 			self.variables[obj]['type'] = setType
> 			self.variables[obj]['size'] = 0
> 			return True
> 
27a48,53
> 
> lineno = 1
> global_scope = Table('Global_variables')
> current_scope = global_scope
> tableux = 1
> 
29c55
< f = open('ast.dot','wb')
---
> f = open('st.dot','wb')
42a69,79
> def print_table(obj):
> 	print "\nPrinting table", obj.data
> 	print "Children: ",
> 	for i in obj.child_tables:
> 		print i.data,
> 	print " "
> 	for j in obj.variables:
> 		print j, ':', obj.variables[j]
> 	for i in obj.child_tables:
> 		print_table(i)
> 
46d82
< 	print t[0].data
49a86,87
> 	global global_scope
> 	print_table(global_scope)
142a181,184
> 	global current_scope
> 	for i in current_scope.variables:
> 		if(current_scope.variables[i]['type']=='NA'):
> 			current_scope.variables[i]['type'] = t[1].data
148a191,194
> 	global current_scope
> 	new_var = current_scope.add_variable(t[1], 'NA')
> 	if(not new_var):
> 		print "Error:", lineno, ": Variable", t[1], "declared twice in same scope."
157a204,207
> 	global current_scope
> 	new_var = current_scope.add_variable(t[1], 'NA')
> 	if(not new_var):
> 		print "Error:", lineno, ": Variable", t[1], "declared twice in same scope."
168a219,222
> 	global current_scope
> 	new_var = current_scope.add_variable(t[1], 'NA')
> 	if(not new_var):
> 		print "Error:", lineno, ": Variable", t[1], "declared twice in same scope."
173a228,231
> 	global current_scope
> 	new_var = current_scope.add_variable(t[1], 'NA')
> 	if(not new_var):
> 		print "Error:", lineno, ": Variable", t[1], "declared twice in same scope."
503c561
< 	'iterative_statement : FOR LPAREN iterative_exp SEMI_COLON iterative_exp SEMI_COLON iterative_exp RPAREN LBRACE statements RBRACE'
---
> 	'iterative_statement : FOR LPAREN iterative_exp SEMI_COLON iterative_exp SEMI_COLON iterative_exp RPAREN lbrace statements rbrace'
535c593
< 	'iterative_statement : FOR LPAREN iterative_exp SEMI_COLON iterative_exp SEMI_COLON iterative_exp RPAREN LBRACE RBRACE'
---
> 	'iterative_statement : FOR LPAREN iterative_exp SEMI_COLON iterative_exp SEMI_COLON iterative_exp RPAREN lbrace rbrace'
573c631
< 	'iterative_statement : WHILE LPAREN exp RPAREN LBRACE statements RBRACE'
---
> 	'iterative_statement : WHILE LPAREN exp RPAREN lbrace statements rbrace'
586c644
< 	'iterative_statement : WHILE LPAREN exp RPAREN LBRACE RBRACE'
---
> 	'iterative_statement : WHILE LPAREN exp RPAREN lbrace rbrace'
611c669
< 	'iterative_statement : DO LBRACE statements RBRACE WHILE LPAREN exp RPAREN SEMI_COLON'
---
> 	'iterative_statement : DO lbrace statements rbrace WHILE LPAREN exp RPAREN SEMI_COLON'
639c697
< 	'iterative_statement : DO LBRACE RBRACE WHILE LPAREN exp RPAREN SEMI_COLON'
---
> 	'iterative_statement : DO lbrace rbrace WHILE LPAREN exp RPAREN SEMI_COLON'
679c737
< 	'conditional_statement : IF LPAREN exp RPAREN LBRACE statements RBRACE %prec UELSE'
---
> 	'conditional_statement : IF LPAREN exp RPAREN lbrace statements rbrace %prec UELSE'
705c763
< 	'conditional_statement : IF LPAREN exp RPAREN LBRACE statements RBRACE ELSE statement'
---
> 	'conditional_statement : IF LPAREN exp RPAREN lbrace statements rbrace ELSE statement'
720c778
< 	'conditional_statement : IF LPAREN exp RPAREN statement ELSE LBRACE statements RBRACE'
---
> 	'conditional_statement : IF LPAREN exp RPAREN statement ELSE lbrace statements rbrace'
735c793
< 	'conditional_statement : IF LPAREN exp RPAREN LBRACE statements RBRACE ELSE LBRACE statements RBRACE'
---
> 	'conditional_statement : IF LPAREN exp RPAREN lbrace statements rbrace ELSE lbrace statements rbrace'
763c821
< 	'main_function : type MAIN LPAREN parameters RPAREN LBRACE statements RBRACE'
---
> 	'main_function : type MAIN LPAREN parameters RPAREN lbrace statements rbrace'
777c835
< 	'main_function : type MAIN LPAREN parameters RPAREN LBRACE RBRACE'
---
> 	'main_function : type MAIN LPAREN parameters RPAREN lbrace rbrace'
790c848
< 	'main_function : MAIN LPAREN parameters RPAREN LBRACE statements RBRACE'
---
> 	'main_function : MAIN LPAREN parameters RPAREN lbrace statements rbrace'
804c862
< 	'main_function : MAIN LPAREN parameters RPAREN LBRACE RBRACE'
---
> 	'main_function : MAIN LPAREN parameters RPAREN lbrace rbrace'
816c874
< 	'main_function : type MAIN LPAREN RPAREN LBRACE statements RBRACE'
---
> 	'main_function : type MAIN LPAREN RPAREN lbrace statements rbrace'
829c887
< 	'main_function : type MAIN LPAREN RPAREN LBRACE RBRACE'
---
> 	'main_function : type MAIN LPAREN RPAREN lbrace rbrace'
841c899
< 	'main_function : MAIN LPAREN RPAREN LBRACE statements RBRACE'
---
> 	'main_function : MAIN LPAREN RPAREN lbrace statements rbrace'
854c912
< 	'main_function : MAIN LPAREN RPAREN LBRACE RBRACE'
---
> 	'main_function : MAIN LPAREN RPAREN lbrace rbrace'
867c925
< 	'normal_function : type VARIABLE LPAREN parameters RPAREN LBRACE statements RBRACE'
---
> 	'normal_function : type VARIABLE LPAREN parameters RPAREN lbrace statements rbrace'
881c939
< 	'normal_function : type VARIABLE LPAREN parameters RPAREN LBRACE RBRACE'
---
> 	'normal_function : type VARIABLE LPAREN parameters RPAREN lbrace rbrace'
894c952
< 	'normal_function : VARIABLE LPAREN parameters RPAREN LBRACE statements RBRACE'
---
> 	'normal_function : VARIABLE LPAREN parameters RPAREN lbrace statements rbrace'
908c966
< 	'normal_function : VARIABLE LPAREN parameters RPAREN LBRACE RBRACE'
---
> 	'normal_function : VARIABLE LPAREN parameters RPAREN lbrace rbrace'
921c979
< 	'normal_function : type VARIABLE LPAREN RPAREN LBRACE statements RBRACE'
---
> 	'normal_function : type VARIABLE LPAREN RPAREN lbrace statements rbrace'
934c992
< 	'normal_function : type VARIABLE LPAREN RPAREN LBRACE RBRACE'
---
> 	'normal_function : type VARIABLE LPAREN RPAREN lbrace rbrace'
946c1004
< 	'normal_function : VARIABLE LPAREN RPAREN LBRACE statements RBRACE'
---
> 	'normal_function : VARIABLE LPAREN RPAREN lbrace statements rbrace'
959c1017
< 	'normal_function : VARIABLE LPAREN RPAREN LBRACE RBRACE'
---
> 	'normal_function : VARIABLE LPAREN RPAREN lbrace rbrace'
1034a1093,1115
> def p_lbrace_1(t):
> 	'lbrace : LBRACE'
> 	t[0] = Node(t[1])
> 	global current_scope, i
> 	new_scope = Table(i)
> 	i += 1
> 	current_scope.add_table(new_scope)
> 	current_scope = new_scope
> 	pass
> 
> def p_rbrace_1(t):
> 	'rbrace : RBRACE'
> 	t[0] = Node(t[1])
> 	global current_scope
> 	current_scope = current_scope.parent
> 	pass
> 
> def p_newline_1(t):
> 	'newline : NEWLINE'
> 	global lineno
> 	lineno += 1
> 	pass
> 
1046c1127
< 	p = yacc.parse(f.read(), debug=1)
---
> 	p = yacc.parse(f.read(), debug=0)