214 lines
6.0 KiB
Python
214 lines
6.0 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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pygments.token
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~~~~~~~~~~~~~~
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Basic token types and the standard tokens.
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:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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class _TokenType(tuple):
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parent = None
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def split(self):
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buf = []
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node = self
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while node is not None:
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buf.append(node)
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node = node.parent
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buf.reverse()
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return buf
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def __init__(self, *args):
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# no need to call super.__init__
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self.subtypes = set()
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def __contains__(self, val):
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return self is val or (
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type(val) is self.__class__ and
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val[:len(self)] == self
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)
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def __getattr__(self, val):
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if not val or not val[0].isupper():
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return tuple.__getattribute__(self, val)
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new = _TokenType(self + (val,))
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setattr(self, val, new)
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self.subtypes.add(new)
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new.parent = self
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return new
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def __repr__(self):
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return 'Token' + (self and '.' or '') + '.'.join(self)
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def __copy__(self):
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# These instances are supposed to be singletons
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return self
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def __deepcopy__(self, memo):
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# These instances are supposed to be singletons
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return self
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Token = _TokenType()
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# Special token types
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Text = Token.Text
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Whitespace = Text.Whitespace
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Escape = Token.Escape
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Error = Token.Error
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# Text that doesn't belong to this lexer (e.g. HTML in PHP)
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Other = Token.Other
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# Common token types for source code
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Keyword = Token.Keyword
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Name = Token.Name
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Literal = Token.Literal
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String = Literal.String
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Number = Literal.Number
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Punctuation = Token.Punctuation
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Operator = Token.Operator
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Comment = Token.Comment
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# Generic types for non-source code
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Generic = Token.Generic
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# String and some others are not direct children of Token.
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# alias them:
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Token.Token = Token
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Token.String = String
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Token.Number = Number
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def is_token_subtype(ttype, other):
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"""
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Return True if ``ttype`` is a subtype of ``other``.
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exists for backwards compatibility. use ``ttype in other`` now.
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"""
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return ttype in other
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def string_to_tokentype(s):
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"""
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Convert a string into a token type::
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>>> string_to_token('String.Double')
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Token.Literal.String.Double
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>>> string_to_token('Token.Literal.Number')
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Token.Literal.Number
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>>> string_to_token('')
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Token
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Tokens that are already tokens are returned unchanged:
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>>> string_to_token(String)
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Token.Literal.String
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"""
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if isinstance(s, _TokenType):
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return s
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if not s:
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return Token
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node = Token
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for item in s.split('.'):
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node = getattr(node, item)
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return node
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# Map standard token types to short names, used in CSS class naming.
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# If you add a new item, please be sure to run this file to perform
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# a consistency check for duplicate values.
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STANDARD_TYPES = {
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Token: '',
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Text: '',
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Whitespace: 'w',
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Escape: 'esc',
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Error: 'err',
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Other: 'x',
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Keyword: 'k',
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Keyword.Constant: 'kc',
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Keyword.Declaration: 'kd',
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Keyword.Namespace: 'kn',
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Keyword.Pseudo: 'kp',
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Keyword.Reserved: 'kr',
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Keyword.Type: 'kt',
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Name: 'n',
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Name.Attribute: 'na',
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Name.Builtin: 'nb',
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Name.Builtin.Pseudo: 'bp',
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Name.Class: 'nc',
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Name.Constant: 'no',
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Name.Decorator: 'nd',
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Name.Entity: 'ni',
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Name.Exception: 'ne',
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Name.Function: 'nf',
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Name.Function.Magic: 'fm',
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Name.Property: 'py',
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Name.Label: 'nl',
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Name.Namespace: 'nn',
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Name.Other: 'nx',
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Name.Tag: 'nt',
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Name.Variable: 'nv',
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Name.Variable.Class: 'vc',
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Name.Variable.Global: 'vg',
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Name.Variable.Instance: 'vi',
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Name.Variable.Magic: 'vm',
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Literal: 'l',
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Literal.Date: 'ld',
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String: 's',
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String.Affix: 'sa',
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String.Backtick: 'sb',
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String.Char: 'sc',
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String.Delimiter: 'dl',
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String.Doc: 'sd',
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String.Double: 's2',
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String.Escape: 'se',
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String.Heredoc: 'sh',
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String.Interpol: 'si',
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String.Other: 'sx',
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String.Regex: 'sr',
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String.Single: 's1',
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String.Symbol: 'ss',
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Number: 'm',
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Number.Bin: 'mb',
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Number.Float: 'mf',
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Number.Hex: 'mh',
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Number.Integer: 'mi',
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Number.Integer.Long: 'il',
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Number.Oct: 'mo',
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Operator: 'o',
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Operator.Word: 'ow',
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Punctuation: 'p',
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Comment: 'c',
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Comment.Hashbang: 'ch',
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Comment.Multiline: 'cm',
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Comment.Preproc: 'cp',
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Comment.PreprocFile: 'cpf',
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Comment.Single: 'c1',
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Comment.Special: 'cs',
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Generic: 'g',
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Generic.Deleted: 'gd',
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Generic.Emph: 'ge',
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Generic.Error: 'gr',
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Generic.Heading: 'gh',
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Generic.Inserted: 'gi',
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Generic.Output: 'go',
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Generic.Prompt: 'gp',
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Generic.Strong: 'gs',
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Generic.Subheading: 'gu',
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Generic.Traceback: 'gt',
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}
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