Revision of parse_alta.py

yumaikas revidoval tento gist 11 months ago. Přejít na revizi

1 file changed, 1 insertion, 1 deletion

parse_alta.py

			@@ -4,7 +4,7 @@ import re
4	4		from collections import namedtuple
5	5
6	6		Pattern = namedtuple("Pattern", ["stack", "value"])
7		-	Rule = namedtuple("Rule", ["pattern", "consequenc"])
	7	+	Rule = namedtuple("Rule", ["pattern", "consequence"])
8	8
9	9		def parse(code):
10	10		idx = 0

yumaikas revidoval tento gist 11 months ago. Přejít na revizi

1 file changed, 111 insertions

parse_alta.py(vytvořil soubor)

		@@ -0,0 +1,111 @@
1	+	#! /bin/env python3
2	+
3	+	import re
4	+	from collections import namedtuple
5	+
6	+	Pattern = namedtuple("Pattern", ["stack", "value"])
7	+	Rule = namedtuple("Rule", ["pattern", "consequenc"])
8	+
9	+	def parse(code):
10	+	idx = 0
11	+	STATE_FIND_OUTER_DELIM = "find/outer-delim"
12	+	STATE_FIND_INNER_DELIM = "find/inner-delim"
13	+	STATE_READ_STACK_VALUE = "read/stack-name"
14	+	STATE_READ_VALUE_NAME = "read/value-name"
15	+
16	+	state = STATE_FIND_OUTER_DELIM
17	+
18	+	def EOF():
19	+	return idx > len(code)
20	+
21	+	def isWhitespace(char):
22	+	return char.isspace()
23	+
24	+	def ch():
25	+	if idx < len(code):
26	+	return code[idx]
27	+	else:
28	+	return ""
29	+
30	+	outer_delim = None
31	+	inner_delim = None
32	+
33	+	rules = []
34	+
35	+	rule_pattern = []
36	+	rule_consequence = []
37	+
38	+	pattern_target = rule_pattern
39	+
40	+	stack_label = ""
41	+	value_label = ""
42	+
43	+	def clean_str(str):
44	+	return re.sub(r"\s+", "", str).strip()
45	+
46	+	def push_pattern():
47	+	pattern_target.append(Pattern(
48	+	stack = clean_str(stack_label),
49	+	value = clean_str(value_lable)
50	+	))
51	+	stack_label = ""
52	+	value_label = ""
53	+
54	+	def push_rule():
55	+	rules.append(Rule(
56	+	pattern = rule_pattern,
57	+	consequence = rule_consequence
58	+	))
59	+	rule_pattern = []
60	+	rule_consequence = []
61	+
62	+	while not EOF():
63	+	if state == STATE_FIND_OUTER_DELIM:
64	+	if isWhitespace(ch()):
65	+	idx += 1
66	+	else:
67	+	outer_delim = ch()
68	+	pattern_target = rule_pattern
69	+	state = STATE_FIND_INNER_DELIM
70	+	idx += 1
71	+	elif state == STATE_FIND_INNER_DELIM:
72	+	if isWhitespace(ch()):
73	+	idx += 1
74	+	else:
75	+	inner_delim = ch()
76	+	idx += 1
77	+	state = STATE_READ_STACK_NAME
78	+	elif state == STATE_READ_STACK_NAME:
79	+	if ch() == inner_delim:
80	+	state = STATE_READ_VALUE_NAME
81	+	idx += 1
82	+	elif ch() == outer_delim:
83	+	push_pattern()
84	+	idx += 1
85	+	state = STATE_FIND_INNER_DELIM
86	+	else:
87	+	stack_label += ch()
88	+	idx += 1
89	+	elif state == STATE_READ_VALUE_NAME:
90	+	if ch() == inner_delim:
91	+	push_pattern()
92	+	idx += 1
93	+	state = STATE_READ_STACK_NAME
94	+	elif ch() == outer_delim and pattern_target == rule_pattern:
95	+	push_pattern()
96	+	pattern_target = rule_consequence
97	+	state = STATE_FIND_INNER_DELIM
98	+	idx += 1
99	+	elif ch() == outer_delim and pattern_target == rule_consequence:
100	+	push_pattern()
101	+	push_rule()
102	+	pattern_target = rule_pattern
103	+	state = STATE_FIND_INNER_DELIM
104	+	idx += 1
105	+	else:
106	+	value_label += ch()
107	+	idx += 1
108	+	if len(rule_consequence) > 0 or len(rule_pattern) > 0:
109	+	push_pattern()
110	+	push_rule()
111	+	return rules

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