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""" |
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pygments.lexers.pddl |
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~~~~~~~~~~~~~~~~~~~~ |
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Lexer for the Planning Domain Definition Language. |
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:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS. |
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:license: BSD, see LICENSE for details. |
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""" |
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from pygments.lexer import RegexLexer, words, include |
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from pygments.token import Punctuation, Keyword, Whitespace, Name, Comment, \ |
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Operator, Number |
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__all__ = ['PddlLexer'] |
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class PddlLexer(RegexLexer): |
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""" |
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A PDDL lexer. |
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It should support up to PDDL 3.1. |
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""" |
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name = 'PDDL' |
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aliases = ['pddl'] |
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filenames = ['*.pddl'] |
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url = 'https://en.wikipedia.org/wiki/Planning_Domain_Definition_Language' |
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version_added = '2.19' |
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tokens = { |
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'root': [ |
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(r'\s+', Whitespace), |
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(r';.*$', Comment.Singleline), |
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include('keywords'), |
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include('builtins'), |
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(r'[()]', Punctuation), |
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(r'[=/*+><-]', Operator), |
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(r'[a-zA-Z][a-zA-Z0-9_-]*', Name), |
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(r'\?[a-zA-Z][a-zA-Z0-9_-]*', Name.Variable), |
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(r'[0-9]+\.[0-9]+', Number.Float), |
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(r'[0-9]+', Number.Integer), |
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], |
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'keywords': [ |
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(words(( |
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':requirements', ':types', ':constants', |
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':predicates', ':functions', ':action', ':agent', |
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':parameters', ':precondition', ':effect', |
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':durative-action', ':duration', ':condition', |
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':derived', ':domain', ':objects', ':init', |
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':goal', ':metric', ':length', ':serial', ':parallel', |
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':strips', ':typing', ':negative-preconditions', |
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':disjunctive-preconditions', ':equality', |
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':existential-preconditions', ':universal-preconditions', |
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':conditional-effects', ':fluents', ':numeric-fluents', |
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':object-fluents', ':adl', ':durative-actions', |
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':continuous-effects', ':derived-predicates', |
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':time-intial-literals', ':preferences', |
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':constraints', ':action-costs', ':multi-agent', |
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':unfactored-privacy', ':factored-privacy', |
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':non-deterministic' |
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), suffix=r'\b'), Keyword) |
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], |
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'builtins': [ |
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(words(( |
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'define', 'domain', 'object', 'either', 'and', |
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'forall', 'preference', 'imply', 'or', 'exists', |
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'not', 'when', 'assign', 'scale-up', 'scale-down', |
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'increase', 'decrease', 'at', 'over', 'start', |
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'end', 'all', 'problem', 'always', 'sometime', |
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'within', 'at-most-once', 'sometime-after', |
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'sometime-before', 'always-within', 'hold-during', |
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'hold-after', 'minimize', 'maximize', |
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'total-time', 'is-violated'), suffix=r'\b'), |
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Name.Builtin) |
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] |
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} |
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