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"""
pygments.lexers.esoteric
~~~~~~~~~~~~~~~~~~~~~~~~
Lexers for esoteric languages.
:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, include, words, bygroups
from pygments.token import Comment, Operator, Keyword, Name, String, Number, \
Punctuation, Error, Whitespace
__all__ = ['BrainfuckLexer', 'BefungeLexer', 'RedcodeLexer', 'CAmkESLexer',
'CapDLLexer', 'AheuiLexer']
class BrainfuckLexer(RegexLexer):
"""
Lexer for the esoteric BrainFuck language.
"""
name = 'Brainfuck'
url = 'http://www.muppetlabs.com/~breadbox/bf/'
aliases = ['brainfuck', 'bf']
filenames = ['*.bf', '*.b']
mimetypes = ['application/x-brainfuck']
version_added = ''
tokens = {
'common': [
# use different colors for different instruction types
(r'[.,]+', Name.Tag),
(r'[+-]+', Name.Builtin),
(r'[<>]+', Name.Variable),
(r'[^.,+\-<>\[\]]+', Comment),
],
'root': [
(r'\[', Keyword, 'loop'),
(r'\]', Error),
include('common'),
],
'loop': [
(r'\[', Keyword, '#push'),
(r'\]', Keyword, '#pop'),
include('common'),
]
}
def analyse_text(text):
"""It's safe to assume that a program which mostly consists of + -
and < > is brainfuck."""
plus_minus_count = 0
greater_less_count = 0
range_to_check = max(256, len(text))
for c in text[:range_to_check]:
if c == '+' or c == '-':
plus_minus_count += 1
if c == '<' or c == '>':
greater_less_count += 1
if plus_minus_count > (0.25 * range_to_check):
return 1.0
if greater_less_count > (0.25 * range_to_check):
return 1.0
result = 0
if '[-]' in text:
result += 0.5
return result
class BefungeLexer(RegexLexer):
"""
Lexer for the esoteric Befunge language.
"""
name = 'Befunge'
url = 'http://en.wikipedia.org/wiki/Befunge'
aliases = ['befunge']
filenames = ['*.befunge']
mimetypes = ['application/x-befunge']
version_added = '0.7'
tokens = {
'root': [
(r'[0-9a-f]', Number),
(r'[+*/%!`-]', Operator), # Traditional math
(r'[<>^v?\[\]rxjk]', Name.Variable), # Move, imperatives
(r'[:\\$.,n]', Name.Builtin), # Stack ops, imperatives
(r'[|_mw]', Keyword),
(r'[{}]', Name.Tag), # Befunge-98 stack ops
(r'".*?"', String.Double), # Strings don't appear to allow escapes
(r'\'.', String.Single), # Single character
(r'[#;]', Comment), # Trampoline... depends on direction hit
(r'[pg&~=@iotsy]', Keyword), # Misc
(r'[()A-Z]', Comment), # Fingerprints
(r'\s+', Whitespace), # Whitespace doesn't matter
],
}
class CAmkESLexer(RegexLexer):
"""
Basic lexer for the input language for the CAmkES component platform.
"""
name = 'CAmkES'
url = 'https://sel4.systems/CAmkES/'
aliases = ['camkes', 'idl4']
filenames = ['*.camkes', '*.idl4']
version_added = '2.1'
tokens = {
'root': [
# C pre-processor directive
(r'^(\s*)(#.*)(\n)', bygroups(Whitespace, Comment.Preproc,
Whitespace)),
# Whitespace, comments
(r'\s+', Whitespace),
(r'/\*(.|\n)*?\*/', Comment),
(r'//.*$', Comment),
(r'[\[(){},.;\]]', Punctuation),
(r'[~!%^&*+=|?:<>/-]', Operator),
(words(('assembly', 'attribute', 'component', 'composition',
'configuration', 'connection', 'connector', 'consumes',
'control', 'dataport', 'Dataport', 'Dataports', 'emits',
'event', 'Event', 'Events', 'export', 'from', 'group',
'hardware', 'has', 'interface', 'Interface', 'maybe',
'procedure', 'Procedure', 'Procedures', 'provides',
'template', 'thread', 'threads', 'to', 'uses', 'with'),
suffix=r'\b'), Keyword),
(words(('bool', 'boolean', 'Buf', 'char', 'character', 'double',
'float', 'in', 'inout', 'int', 'int16_6', 'int32_t',
'int64_t', 'int8_t', 'integer', 'mutex', 'out', 'real',
'refin', 'semaphore', 'signed', 'string', 'struct',
'uint16_t', 'uint32_t', 'uint64_t', 'uint8_t', 'uintptr_t',
'unsigned', 'void'),
suffix=r'\b'), Keyword.Type),
# Recognised attributes
(r'[a-zA-Z_]\w*_(priority|domain|buffer)', Keyword.Reserved),
(words(('dma_pool', 'from_access', 'to_access'), suffix=r'\b'),
Keyword.Reserved),
# CAmkES-level include
(r'(import)(\s+)((?:<[^>]*>|"[^"]*");)',
bygroups(Comment.Preproc, Whitespace, Comment.Preproc)),
# C-level include
(r'(include)(\s+)((?:<[^>]*>|"[^"]*");)',
bygroups(Comment.Preproc, Whitespace, Comment.Preproc)),
# Literals
(r'0[xX][\da-fA-F]+', Number.Hex),
(r'-?[\d]+', Number),
(r'-?[\d]+\.[\d]+', Number.Float),
(r'"[^"]*"', String),
(r'[Tt]rue|[Ff]alse', Name.Builtin),
# Identifiers
(r'[a-zA-Z_]\w*', Name),
],
}
class CapDLLexer(RegexLexer):
"""
Basic lexer for CapDL.
The source of the primary tool that reads such specifications is available
at https://github.com/seL4/capdl/tree/master/capDL-tool. Note that this
lexer only supports a subset of the grammar. For example, identifiers can
shadow type names, but these instances are currently incorrectly
highlighted as types. Supporting this would need a stateful lexer that is
considered unnecessarily complex for now.
"""
name = 'CapDL'
url = 'https://ssrg.nicta.com.au/publications/nictaabstracts/Kuz_KLW_10.abstract.pml'
aliases = ['capdl']
filenames = ['*.cdl']
version_added = '2.2'
tokens = {
'root': [
# C pre-processor directive
(r'^(\s*)(#.*)(\n)',
bygroups(Whitespace, Comment.Preproc, Whitespace)),
# Whitespace, comments
(r'\s+', Whitespace),
(r'/\*(.|\n)*?\*/', Comment),
(r'(//|--).*$', Comment),
(r'[<>\[(){},:;=\]]', Punctuation),
(r'\.\.', Punctuation),
(words(('arch', 'arm11', 'caps', 'child_of', 'ia32', 'irq', 'maps',
'objects'), suffix=r'\b'), Keyword),
(words(('aep', 'asid_pool', 'cnode', 'ep', 'frame', 'io_device',
'io_ports', 'io_pt', 'notification', 'pd', 'pt', 'tcb',
'ut', 'vcpu'), suffix=r'\b'), Keyword.Type),
# Properties
(words(('asid', 'addr', 'badge', 'cached', 'dom', 'domainID', 'elf',
'fault_ep', 'G', 'guard', 'guard_size', 'init', 'ip',
'prio', 'sp', 'R', 'RG', 'RX', 'RW', 'RWG', 'RWX', 'W',
'WG', 'WX', 'level', 'masked', 'master_reply', 'paddr',
'ports', 'reply', 'uncached'), suffix=r'\b'),
Keyword.Reserved),
# Literals
(r'0[xX][\da-fA-F]+', Number.Hex),
(r'\d+(\.\d+)?(k|M)?', Number),
(words(('bits',), suffix=r'\b'), Number),
(words(('cspace', 'vspace', 'reply_slot', 'caller_slot',
'ipc_buffer_slot'), suffix=r'\b'), Number),
# Identifiers
(r'[a-zA-Z_][-@\.\w]*', Name),
],
}
class RedcodeLexer(RegexLexer):
"""
A simple Redcode lexer based on ICWS'94.
Contributed by Adam Blinkinsop <blinks@acm.org>.
"""
name = 'Redcode'
aliases = ['redcode']
filenames = ['*.cw']
url = 'https://en.wikipedia.org/wiki/Core_War'
version_added = '0.8'
opcodes = ('DAT', 'MOV', 'ADD', 'SUB', 'MUL', 'DIV', 'MOD',
'JMP', 'JMZ', 'JMN', 'DJN', 'CMP', 'SLT', 'SPL',
'ORG', 'EQU', 'END')
modifiers = ('A', 'B', 'AB', 'BA', 'F', 'X', 'I')
tokens = {
'root': [
# Whitespace:
(r'\s+', Whitespace),
(r';.*$', Comment.Single),
# Lexemes:
# Identifiers
(r'\b({})\b'.format('|'.join(opcodes)), Name.Function),
(r'\b({})\b'.format('|'.join(modifiers)), Name.Decorator),
(r'[A-Za-z_]\w+', Name),
# Operators
(r'[-+*/%]', Operator),
(r'[#$@<>]', Operator), # mode
(r'[.,]', Punctuation), # mode
# Numbers
(r'[-+]?\d+', Number.Integer),
],
}
class AheuiLexer(RegexLexer):
"""
Aheui is esoteric language based on Korean alphabets.
"""
name = 'Aheui'
url = 'http://aheui.github.io/'
aliases = ['aheui']
filenames = ['*.aheui']
version_added = ''
tokens = {
'root': [
('['
'나-낳냐-냫너-넣녀-녛노-놓뇨-눟뉴-닇'
'다-닿댜-댷더-덯뎌-뎧도-돟됴-둫듀-딓'
'따-땋땨-떃떠-떻뗘-뗳또-똫뚀-뚷뜌-띟'
'라-랗랴-럏러-렇려-렿로-롷료-뤃류-릫'
'마-맣먀-먛머-멓며-몋모-뫃묘-뭏뮤-믷'
'바-밯뱌-뱧버-벟벼-볗보-봏뵤-붛뷰-빃'
'빠-빻뺘-뺳뻐-뻫뼈-뼣뽀-뽛뾰-뿧쀼-삏'
'사-샇샤-샿서-섷셔-셯소-솧쇼-숳슈-싛'
'싸-쌓쌰-썋써-쎃쎠-쎻쏘-쏳쑈-쑿쓔-씧'
'자-잫쟈-쟣저-젛져-졓조-좋죠-줗쥬-즿'
'차-챃챠-챻처-첳쳐-쳫초-촣쵸-춯츄-칗'
'카-캏캬-컇커-컿켜-켷코-콯쿄-쿻큐-킣'
'타-탛탸-턓터-텋텨-톃토-톻툐-퉇튜-틯'
'파-팧퍄-퍟퍼-펗펴-폏포-퐇표-풓퓨-픻'
'하-핳햐-햫허-헣혀-혛호-홓효-훟휴-힇'
']', Operator),
('.', Comment),
],
}