-
Notifications
You must be signed in to change notification settings - Fork 0
/
Symbol.py
78 lines (57 loc) · 1.61 KB
/
Symbol.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
from Scope import Scope
class Symbol(object):
def __init__(self, name = None, s_type = None):
self.__name = name if name else "Object at -> " + str(id(self))
self.__type = s_type
def __str__(self):
return ("Name: " + str(self.__name) + " Type: "+
str(self.__type))
@property
def name(self):
return self.__name
@property
def type(self):
return self.__type
@property
def value_symbol(self):
return None
def is_object(self):
return False
class BuiltInTypeSymbol(Symbol):
def __init__(self, name):
super(BuiltInTypeSymbol, self).__init__(name,
self.__class__)
def __str__(self):
return "BuiltIn(" + str(self.name) + ")"
class ObjectSymbol(Symbol, Scope):
def __init__(self, enclosing_scope):
Symbol.__init__(self)
scope_name = self.make_name(enclosing_scope.scope_name)
Scope.__init__(self, scope_name, enclosing_scope)
def is_object(self):
return True
def make_name(self, enclosing_scope_name):
return (str(enclosing_scope_name) + " : " +
str(self.name))
class ArraySymbol(Symbol):
def __init__(self):
super(ArraySymbol, self).__init__()
self.__size = 0
self.__elements = list()
def __str__(self):
result = ""
for e in self.__elements:
result += str(e) + ', '
return result
def append(self, symbol):
self.__elements.append(symbol)
self.__size += 1
def get_array_element(self, idx):
return self.__elements[int(idx)]
class KeyValueSymbol(Symbol):
def __init__(self, name, type, value_symbol):
super(KeyValueSymbol, self).__init__(name, type)
self.__value_symbol = value_symbol
@property
def value_symbol(self):
return self.__value_symbol