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# -*- coding: utf-8 -*-
#
# Copyright (C) 2016 Andi Albrecht, albrecht.andi@gmail.com
#
# This module is part of python-sqlparse and is released under
# the BSD License: https://opensource.org/licenses/BSD-3-Clause
#
# The Token implementation is based on pygment's token system written
# by Georg Brandl.
# http://pygments.org/
"""Tokens"""
class _TokenType(tuple):
parent = None
def __contains__(self, item):
return item is not None and (self is item or item[:len(self)] == self)
def __getattr__(self, name):
new = _TokenType(self + (name,))
setattr(self, name, new)
new.parent = self
return new
def __repr__(self):
# self can be False only if its the `root` ie. Token itself
return 'Token' + ('.' if self else '') + '.'.join(self)
Token = _TokenType()
# Special token types
Text = Token.Text
Whitespace = Text.Whitespace
Newline = Whitespace.Newline
Error = Token.Error
# Text that doesn't belong to this lexer (e.g. HTML in PHP)
Other = Token.Other
# Common token types for source code
Keyword = Token.Keyword
Name = Token.Name
Literal = Token.Literal
String = Literal.String
Number = Literal.Number
Punctuation = Token.Punctuation
Operator = Token.Operator
Comparison = Operator.Comparison
Wildcard = Token.Wildcard
Comment = Token.Comment
Assignment = Token.Assignment
# Generic types for non-source code
Generic = Token.Generic
# String and some others are not direct childs of Token.
# alias them:
Token.Token = Token
Token.String = String
Token.Number = Number
# SQL specific tokens
DML = Keyword.DML
DDL = Keyword.DDL
CTE = Keyword.CTE
Command = Keyword.Command
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