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"""
Created on 4 sept. 2010
@author: luca
Submitted by Luca DallOlio, September, 2010
"""
import unittest
from . 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")
pyparsingTreeList = pyparsingTree.asList()
print(pyparsingTreeList)
self.assertEqual(
pyparsingTreeList,
[
[
[["2"], []],
[
["-", [["5"], [["*", ["4", "2"]]]]],
["+", [["7"], [["/", ["2", "5"]]]]],
],
]
],
)
if __name__ == "__main__":
# import sys;sys.argv = ['', 'Test.testOptionsSpec']
unittest.main()
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