def pattern(self, ast, *args):
pattern = ast
try:
re.compile(pattern, RE_FLAGS)
except (TypeError, re.error) as e:
raise FailedSemantics('regexp error: ' + str(e))
return grammars.Pattern(pattern)
def any(self, ast):
return model.Pattern('\w+|\S+')
def newrange(self, ast):
return model.Pattern('[%s]' % re.escape(ast))
def range(self, ast):
return model.Pattern('[%s-%s]' % (ast.first, ast.last))
def negative(self, ast):
neg = model.NegativeLookahead(ast)
any = model.Pattern('.')
return model.Sequence(AST(sequence=[neg, any]))
def negative(self, ast):
neg = model.LookaheadNot(ast)
any = model.Pattern('.')
return model.Sequence([neg, any])
def pattern(self, ast, *args):
return grammars.Pattern(ast)
def newranges(self, ast):
pattern = ''.join(ast)
re.compile(pattern)
return model.Pattern(pattern)
def regexp(self, ast):
pattern = ''.join(ast)
re.compile(pattern)
return model.Pattern(pattern)