def testInvalid():
testValidGrammar = r"""
testValid
<toolset>
def noX(node):
if node.value == 'x':
message = "'x' is an invalid letter."
(pattern,pos,source) = (node.pattern,node.start,node.source)
raise Invalidation(message, pattern=pattern, source=source,pos=pos)
<definition>
x : "x" : noX
letter : [a..z] : noX
text : letter{4..6}
"""
make_parser = makeParser(testValidGrammar)
parser = make_parser()
source = "abcxyz"
# check 'x' not matched alone
parser.x.test('x')
# check 'x' not matched in sequence
parser.letter.test(source, "findAll")
# check repetition match stops on 'x'
parser.test(source)
def testInvalid():
testValidGrammar = r"""
testValid
<toolset>
def noX(node):
if node.value == 'x':
message = "'x' is an invalid letter."
(pattern,pos,source) = (node.pattern,node.start,node.source)
raise Invalidation(message, pattern=pattern, source=source,pos=pos)
<definition>
x : "x" : noX
letter : [a..z] : noX
text : letter{4..6}
"""
make_parser = makeParser(testValidGrammar)
parser = make_parser()
source = "abcxyz"
# check 'x' not matched alone
parser.x.test('x')
# check 'x' not matched in sequence
parser.letter.test(source, "findAll")
# check repetition match stops on 'x'
parser.test(source)
def do():
''' write parser from grammar '''
# get source grammar from command line argument
try:
grammar = file(arguments[1], 'r').read()
except IndexError:
message = ("\nCall Format:\n"
"\tpython gen.py grammar_file_name\n"
"or\n"
"\tpython gen.py grammar_file_name parserFileName\n\n")
write(message)
end()
# write parser into target file
try:
parserFile = file(arguments[2], 'w')
makeParser(grammar, parserFile)
except Exception:
makeParser(grammar)
def do():
''' write parser from grammar '''
# get source grammar from command line argument
try:
grammar = file(arguments[1], 'r').read()
except IndexError:
message = ("\nCall Format:\n"
"\tpython gen.py grammar_file_name\n"
"or\n"
"\tpython gen.py grammar_file_name parserFileName\n\n"
)
write(message)
end()
# write parser into target file
try:
parserFile = file(arguments[2], 'w')
makeParser(grammar, parserFile)
except Exception:
makeParser(grammar)
def testGrammar():
print("=== parser from grammar ===")
grammar = r"""
testParser
<definition>
w1 : "foo"
w2 : "bar"
ch : w1 / w2
"""
make_parser = makeParser(grammar)
parser = make_parser()
print "parser :", parser
print "top pattern :", parser.topPattern
parser.test("barfoz")
def testGrammar():
print ("=== parser from grammar ===")
grammar = r"""
testParser
<definition>
w1 : "foo"
w2 : "bar"
ch : w1 / w2
"""
make_parser = makeParser(grammar)
parser = make_parser()
print "parser :", parser
print "top pattern :", parser.topPattern
parser.test("barfoz")
#~ grammar = """ #~ genTest #~ <toolset> #~ pass #~ <definition> #~ X : 'x' #~ XX : X XXX : join #~ XXX : XX / X : @ #~ """ #~ parser = makeParser(grammar) #~ source = r"""x xxx xxxxx""" #~ parser.test(source,"findAll") #~ end() make_parser = makeParser(grammar) parser = make_parser() # test it sources = """\ 1 - 1.1 1.1 * -2 -3 + +4.4 -3 ++4.4 3 *-4.4 9*8*7*6*5 1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1 9+8+7+6+5 3*(2+1) 1*4 + 3*2
#~ grammar = """ #~ genTest #~ <toolset> #~ pass #~ <definition> #~ X : 'x' #~ XX : X XXX : join #~ XXX : XX / X : @ #~ """ #~ parser = makeParser(grammar) #~ source = r"""x xxx xxxxx""" #~ parser.test(source,"findAll") #~ end() make_parser = makeParser(grammar) parser = make_parser() # test it sources = """\ 1 - 1.1 1.1 * -2 -3 + +4.4 -3 ++4.4 3 *-4.4 9*8*7*6*5 1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1*1 9+8+7+6+5 3*(2+1) 1*4 + 3*2
