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
|
'''
Created on 4 sept. 2010
@author: luca
Submitted by Luca DallOlio, September, 2010
'''
import unittest
import antlr_grammar
class Test(unittest.TestCase):
def testOptionsSpec(self):
text = """options {
language = Python;
}"""
antlr_grammar.optionsSpec.parseString(text) #@UndefinedVariable
def testTokensSpec(self):
text = """tokens {
PLUS = '+' ;
MINUS = '-' ;
MULT = '*' ;
DIV = '/' ;
}"""
antlr_grammar.tokensSpec.parseString(text) #@UndefinedVariable
def testBlock(self):
text = """( PLUS | MINUS )"""
antlr_grammar.block.parseString(text) #@UndefinedVariable
def testRule(self):
text = """expr : term ( ( PLUS | MINUS ) term )* ;"""
antlr_grammar.rule.parseString(text) #@UndefinedVariable
def testLexerRule(self):
text = """fragment DIGIT : '0'..'9' ;"""
antlr_grammar.rule.parseString(text) #@UndefinedVariable
def testLexerRule2(self):
text = """WHITESPACE : ( '\t' | ' ' | '\r' | '\n'| '\u000C' )+ { $channel = HIDDEN; } ;"""
#antlr_grammar.rule.parseString(text) #@UndefinedVariable
def testGrammar(self):
text = """grammar SimpleCalc;
options {
language = Python;
}
tokens {
PLUS = '+' ;
MINUS = '-' ;
MULT = '*' ;
DIV = '/' ;
}
/*------------------------------------------------------------------
* PARSER RULES
*------------------------------------------------------------------*/
expr : term ( ( PLUS | MINUS ) term )* ;
term : factor ( ( MULT | DIV ) factor )* ;
factor : NUMBER ;
/*------------------------------------------------------------------
* LEXER RULES
*------------------------------------------------------------------*/
NUMBER : (DIGIT)+ ;
/* WHITESPACE : ( '\t' | ' ' | '\r' | '\n'| '\u000C' )+ { $channel = HIDDEN; } ; */
fragment DIGIT : '0'..'9' ;"""
antlrGrammarTree = antlr_grammar.grammarDef.parseString(text) #@UndefinedVariable
pyparsingRules = antlr_grammar.antlrConverter(antlrGrammarTree)
pyparsingRule = pyparsingRules["expr"]
pyparsingTree = pyparsingRule.parseString("2 - 5 * 42 + 7 / 25")
self.assertNotEqual(None, pyparsingTree)
if __name__ == "__main__":
#import sys;sys.argv = ['', 'Test.testOptionsSpec']
unittest.main()
|
