litarg = Group(
number | aString
)('args*')
litkwarg = Group(argname + equal + litarg)('kwargs*')
# lookahead to prevent failing on equals
litargs = delimitedList(~litkwarg + litarg)
litkwargs = delimitedList(litkwarg)
template = Group(
Literal('template') + leftParen +
(call | pathExpression) +
Optional(comma + (litargs | litkwargs)) +
rightParen
)('template')
if __version__.startswith('1.'):
expression << Group(template | call | pathExpression)('expression')
grammar << expression
else:
expression <<= Group(template | call | pathExpression)('expression')
grammar <<= expression
def enableDebug():
for name, obj in globals().items():
try:
obj.setName(name)
obj.setDebug(True)
except:
pass
litargs = delimitedList(~litkwarg +
litarg) # lookahead to prevent failing on equals
litkwargs = delimitedList(litkwarg)
template = Group(
Literal('template') + leftParen + (call | pathExpression) +
Optional(comma + (litargs | litkwargs)) + rightParen)('template')
pipeSep = ZeroOrMore(Literal(' ')) + Literal('|') + ZeroOrMore(Literal(' '))
pipedExpression = Group(
(template | call | pathExpression) +
Group(ZeroOrMore(Suppress(pipeSep) +
Group(call)('pipedCall')))('pipedCalls'))('expression')
if __version__.startswith('1.'):
expression << pipedExpression
grammar << expression
else:
expression <<= pipedExpression
grammar <<= expression
def enableDebug():
for name, obj in list(globals().items()):
try:
obj.setName(name)
obj.setDebug(True)
except:
pass
args = delimitedList(~kwarg + arg) # lookahead to prevent failing on equals
kwargs = delimitedList(kwarg)
call = Group(funcname + leftParen + Optional(args + Optional(comma + kwargs)) + rightParen)("call")
# Metric pattern (aka. pathExpression)
validMetricChars = "".join((set(printables) - set(symbols)))
escapedChar = backslash + Word(symbols, exact=1)
partialPathElem = Combine(OneOrMore(escapedChar | Word(validMetricChars)))
matchEnum = Combine(leftBrace + delimitedList(partialPathElem, combine=True) + rightBrace)
pathElement = Combine(Group(partialPathElem | matchEnum) + ZeroOrMore(matchEnum | partialPathElem))
pathExpression = delimitedList(pathElement, delim=".", combine=True)("pathExpression")
if __version__.startswith("1."):
expression << Group(call | pathExpression)("expression")
grammar << expression
else:
expression <<= Group(call | pathExpression)("expression")
grammar <<= expression
def enableDebug():
for name, obj in globals().items():
try:
obj.setName(name)
obj.setDebug(True)
except:
pass