def ParseCheckerAssertion(parent, line, variant, lineNo):
""" This method parses the content of a check line stripped of the initial
comment symbol and the CHECK keyword.
"""
assertion = TestAssertion(parent, variant, line, lineNo)
# Loop as long as there is something to parse.
while line:
# Search for the nearest occurrence of the special markers.
matchWhitespace = re.search(r"\s+", line)
matchPattern = re.search(RegexExpression.Regex.regexPattern, line)
matchVariableReference = re.search(RegexExpression.Regex.regexVariableReference, line)
matchVariableDefinition = re.search(RegexExpression.Regex.regexVariableDefinition, line)
# If one of the above was identified at the current position, extract them
# from the line, parse them and add to the list of line parts.
if __isMatchAtStart(matchWhitespace):
# A whitespace in the check line creates a new separator of line parts.
# This allows for ignored output between the previous and next parts.
line = line[matchWhitespace.end():]
assertion.addExpression(RegexExpression.createSeparator())
elif __isMatchAtStart(matchPattern):
pattern = line[0:matchPattern.end()]
pattern = pattern[2:-2]
line = line[matchPattern.end():]
assertion.addExpression(RegexExpression.createPattern(pattern))
elif __isMatchAtStart(matchVariableReference):
var = line[0:matchVariableReference.end()]
line = line[matchVariableReference.end():]
name = var[2:-2]
assertion.addExpression(RegexExpression.createVariableReference(name))
elif __isMatchAtStart(matchVariableDefinition):
var = line[0:matchVariableDefinition.end()]
line = line[matchVariableDefinition.end():]
colonPos = var.find(":")
name = var[2:colonPos]
body = var[colonPos+1:-2]
assertion.addExpression(RegexExpression.createVariableDefinition(name, body))
else:
# If we're not currently looking at a special marker, this is a plain
# text match all the way until the first special marker (or the end
# of the line).
firstMatch = __firstMatch([ matchWhitespace,
matchPattern,
matchVariableReference,
matchVariableDefinition ],
line)
text = line[0:firstMatch]
line = line[firstMatch:]
assertion.addExpression(RegexExpression.createText(text))
return assertion
def assertEqualsPattern(self, string, pattern): self.assertEqual(self.parseExpression(string), RegexExpression.createPattern(pattern))