forked from pixie-lang/pixie
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathstring.py
More file actions
136 lines (110 loc) · 3.41 KB
/
string.py
File metadata and controls
136 lines (110 loc) · 3.41 KB
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
import pixie.vm.rt as rt
from pixie.vm.object import Object, Type, affirm
from pixie.vm.code import extend, as_var
from pixie.vm.primitives import nil, true, false
from pixie.vm.numbers import Integer, _add
import pixie.vm.stdlib as proto
import pixie.vm.util as util
from rpython.rlib.rarithmetic import intmask, r_uint
class String(Object):
_type = Type(u"pixie.stdlib.String")
def type(self):
return String._type
def __init__(self, s):
#assert isinstance(s, unicode)
self._str = s
@extend(proto._str, String)
def _str(x):
return x
@extend(proto._repr, String)
def _repr(self):
res = u""
assert isinstance(self, String)
for c in self._str:
if c == "\"":
res += u"\\\""
elif c == "\n":
res += u"\\n"
elif c == "\t":
res += u"\\t"
elif c == "\b":
res += u"\\b"
elif c == "\f":
res += u"\\f"
elif c == "\r":
res += u"\\r"
else:
res += c
return rt.wrap(u"\"" + res + u"\"")
@extend(proto._count, String)
def _count(self):
assert isinstance(self, String)
return rt.wrap(len(self._str))
@extend(proto._nth, String)
def _nth(self, idx):
assert isinstance(self, String)
i = idx.int_val()
if 0 <= i < len(self._str):
return Character(ord(self._str[i]))
raise IndexError()
@extend(proto._eq, String)
def _eq(self, v):
assert isinstance(self, String)
if not isinstance(v, String):
return false
return true if self._str == v._str else false
class Character(Object):
_type = Type(u"pixie.stdlib.Character")
_immutable_fields_ = ["_char_val"]
def type(self):
return Character._type
def __init__(self, i):
assert isinstance(i, int)
self._char_val = i
def char_val(self):
return self._char_val
@extend(proto._str, Character)
def _str(self):
assert isinstance(self, Character)
return rt.wrap(u"" + unichr(self.char_val()))
@extend(proto._repr, Character)
def _repr(self):
assert isinstance(self, Character)
cv = self.char_val()
if cv < 128:
return rt.wrap(u"\\"+unicode(chr(cv)))
hexv = rt.name(rt.bit_str(rt.wrap(self.char_val()), rt.wrap(4)))
return rt.wrap(u"\\u" + u"0" * (4 - len(hexv)) + hexv)
@extend(proto._eq, Character)
def _eq(self, obj):
assert isinstance(self, Character)
if self is obj:
return true
if not isinstance(obj, Character):
return false
return true if self.char_val() == obj.char_val() else false
@extend(proto._hash, Character)
def _hash(self):
return rt.wrap(intmask(util.hash_int(r_uint(self.char_val()))))
@as_var("char")
def char(val):
affirm(isinstance(val, Integer), u"First argument must be an Integer")
return Character(val.int_val())
@extend(_add, Character._type, Integer._type)
def _add(a, b):
assert isinstance(a, Character) and isinstance(b, Integer)
return rt._add(rt.wrap(a.char_val()), b)
@extend(_add, Character._type, Character._type)
def _add(a, b):
assert isinstance(a, Character) and isinstance(b, Character)
return Character(a.char_val() + b.char_val())
@extend(proto._name, String)
def _name(self):
return self
@extend(proto._namespace, String)
def _namespace(self):
return nil
@extend(proto._hash, String)
def _hash(self):
assert isinstance(self, String)
return rt.wrap(intmask(util.hash_unencoded_chars(self._str)))