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"""
pygments.lexers.lean
~~~~~~~~~~~~~~~~~~~~
Lexers for the Lean theorem prover.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, default, words, include
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Generic, Whitespace
__all__ = ['Lean3Lexer']
class Lean3Lexer(RegexLexer):
"""
For the Lean 3 theorem prover.
.. versionadded:: 2.0
"""
name = 'Lean'
url = 'https://leanprover-community.github.io/lean3'
aliases = ['lean', 'lean3']
filenames = ['*.lean']
mimetypes = ['text/x-lean', 'text/x-lean3']
tokens = {
'expression': [
(r'\s+', Text),
(r'/--', String.Doc, 'docstring'),
(r'/-', Comment, 'comment'),
(r'--.*?$', Comment.Single),
(words((
'forall', 'fun', 'Pi', 'from', 'have', 'show', 'assume', 'suffices',
'let', 'if', 'else', 'then', 'in', 'with', 'calc', 'match',
'do'
), prefix=r'\b', suffix=r'\b'), Keyword),
(words(('sorry', 'admit'), prefix=r'\b', suffix=r'\b'), Generic.Error),
(words(('Sort', 'Prop', 'Type'), prefix=r'\b', suffix=r'\b'), Keyword.Type),
(words((
'(', ')', ':', '{', '}', '[', ']', '⟨', '⟩', '‹', '›', '⦃', '⦄', ':=', ',',
)), Operator),
(r'[A-Za-z_\u03b1-\u03ba\u03bc-\u03fb\u1f00-\u1ffe\u2100-\u214f]'
r'[.A-Za-z_\'\u03b1-\u03ba\u03bc-\u03fb\u1f00-\u1ffe\u2070-\u2079'
r'\u207f-\u2089\u2090-\u209c\u2100-\u214f0-9]*', Name),
(r'0x[A-Za-z0-9]+', Number.Integer),
(r'0b[01]+', Number.Integer),
(r'\d+', Number.Integer),
(r'"', String.Double, 'string'),
(r"'(?:(\\[\\\"'nt])|(\\x[0-9a-fA-F]{2})|(\\u[0-9a-fA-F]{4})|.)'", String.Char),
(r'[~?][a-z][\w\']*:', Name.Variable),
(r'\S', Name.Builtin.Pseudo),
],
'root': [
(words((
'import', 'renaming', 'hiding',
'namespace',
'local',
'private', 'protected', 'section',
'include', 'omit', 'section',
'protected', 'export',
'open',
'attribute',
), prefix=r'\b', suffix=r'\b'), Keyword.Namespace),
(words((
'lemma', 'theorem', 'def', 'definition', 'example',
'axiom', 'axioms', 'constant', 'constants',
'universe', 'universes',
'inductive', 'coinductive', 'structure', 'extends',
'class', 'instance',
'abbreviation',
'noncomputable theory',
'noncomputable', 'mutual', 'meta',
'attribute',
'parameter', 'parameters',
'variable', 'variables',
'reserve', 'precedence',
'postfix', 'prefix', 'notation', 'infix', 'infixl', 'infixr',
'begin', 'by', 'end',
'set_option',
'run_cmd',
), prefix=r'\b', suffix=r'\b'), Keyword.Declaration),
(r'@\[', Keyword.Declaration, 'attribute'),
(words((
'#eval', '#check', '#reduce', '#exit',
'#print', '#help',
), suffix=r'\b'), Keyword),
include('expression')
],
'attribute': [
(r'\]', Keyword.Declaration, '#pop'),
include('expression'),
],
'comment': [
(r'[^/-]', Comment.Multiline),
(r'/-', Comment.Multiline, '#push'),
(r'-/', Comment.Multiline, '#pop'),
(r'[/-]', Comment.Multiline)
],
'docstring': [
(r'[^/-]', String.Doc),
(r'-/', String.Doc, '#pop'),
(r'[/-]', String.Doc)
],
'string': [
(r'[^\\"]+', String.Double),
(r"(?:(\\[\\\"'nt])|(\\x[0-9a-fA-F]{2})|(\\u[0-9a-fA-F]{4}))", String.Escape),
('"', String.Double, '#pop'),
],
}
LeanLexer = Lean3Lexer
|
