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283 lines
11 KiB
283 lines
11 KiB
"""
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pygments.lexers.julia
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~~~~~~~~~~~~~~~~~~~~~
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Lexers for the Julia language.
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:copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import re
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from pygments.lexer import Lexer, RegexLexer, bygroups, do_insertions, \
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words, include
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from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
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Number, Punctuation, Generic
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from pygments.util import shebang_matches
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from pygments.lexers._julia_builtins import OPERATORS_LIST, DOTTED_OPERATORS_LIST, \
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KEYWORD_LIST, BUILTIN_LIST, LITERAL_LIST
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__all__ = ['JuliaLexer', 'JuliaConsoleLexer']
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# see https://docs.julialang.org/en/v1/manual/variables/#Allowed-Variable-Names
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allowed_variable = \
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'(?:[a-zA-Z_\u00A1-\U0010ffff][a-zA-Z_0-9!\u00A1-\U0010ffff]*)'
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# see https://github.com/JuliaLang/julia/blob/master/src/flisp/julia_opsuffs.h
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operator_suffixes = r'[²³¹ʰʲʳʷʸˡˢˣᴬᴮᴰᴱᴳᴴᴵᴶᴷᴸᴹᴺᴼᴾᴿᵀᵁᵂᵃᵇᵈᵉᵍᵏᵐᵒᵖᵗᵘᵛᵝᵞᵟᵠᵡᵢᵣᵤᵥᵦᵧᵨᵩᵪᶜᶠᶥᶦᶫᶰᶸᶻᶿ′″‴‵‶‷⁗⁰ⁱ⁴⁵⁶⁷⁸⁹⁺⁻⁼⁽⁾ⁿ₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎ₐₑₒₓₕₖₗₘₙₚₛₜⱼⱽ]*'
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class JuliaLexer(RegexLexer):
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"""
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For `Julia <http://julialang.org/>`_ source code.
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.. versionadded:: 1.6
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"""
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name = 'Julia'
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aliases = ['julia', 'jl']
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filenames = ['*.jl']
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mimetypes = ['text/x-julia', 'application/x-julia']
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flags = re.MULTILINE | re.UNICODE
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tokens = {
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'root': [
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(r'\n', Text),
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(r'[^\S\n]+', Text),
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(r'#=', Comment.Multiline, "blockcomment"),
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(r'#.*$', Comment),
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(r'[\[\](),;]', Punctuation),
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# symbols
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# intercept range expressions first
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(r'(' + allowed_variable + r')(\s*)(:)(' + allowed_variable + ')',
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bygroups(Name, Text, Operator, Name)),
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# then match :name which does not follow closing brackets, digits, or the
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# ::, <:, and :> operators
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(r'(?<![\]):<>\d.])(:' + allowed_variable + ')', String.Symbol),
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# type assertions - excludes expressions like ::typeof(sin) and ::avec[1]
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(r'(?<=::)(\s*)(' + allowed_variable + r')\b(?![(\[])', bygroups(Text, Keyword.Type)),
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# type comparisons
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# - MyType <: A or MyType >: A
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('(' + allowed_variable + r')(\s*)([<>]:)(\s*)(' + allowed_variable + r')\b(?![(\[])',
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bygroups(Keyword.Type, Text, Operator, Text, Keyword.Type)),
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# - <: B or >: B
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(r'([<>]:)(\s*)(' + allowed_variable + r')\b(?![(\[])',
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bygroups(Operator, Text, Keyword.Type)),
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# - A <: or A >:
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(r'\b(' + allowed_variable + r')(\s*)([<>]:)',
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bygroups(Keyword.Type, Text, Operator)),
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# operators
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# Suffixes aren't actually allowed on all operators, but we'll ignore that
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# since those cases are invalid Julia code.
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(words([*OPERATORS_LIST, *DOTTED_OPERATORS_LIST], suffix=operator_suffixes), Operator),
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(words(['.' + o for o in DOTTED_OPERATORS_LIST], suffix=operator_suffixes), Operator),
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(words(['...', '..']), Operator),
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# NOTE
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# Patterns below work only for definition sites and thus hardly reliable.
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#
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# functions
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# (r'(function)(\s+)(' + allowed_variable + ')',
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# bygroups(Keyword, Text, Name.Function)),
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# chars
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(r"'(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,3}|\\u[a-fA-F0-9]{1,4}|"
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r"\\U[a-fA-F0-9]{1,6}|[^\\\'\n])'", String.Char),
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# try to match trailing transpose
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(r'(?<=[.\w)\]])(\'' + operator_suffixes + ')+', Operator),
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# raw strings
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(r'(raw)(""")', bygroups(String.Affix, String), 'tqrawstring'),
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(r'(raw)(")', bygroups(String.Affix, String), 'rawstring'),
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# regular expressions
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(r'(r)(""")', bygroups(String.Affix, String.Regex), 'tqregex'),
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(r'(r)(")', bygroups(String.Affix, String.Regex), 'regex'),
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# other strings
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(r'(' + allowed_variable + ')?(""")', bygroups(String.Affix, String), 'tqstring'),
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(r'(' + allowed_variable + ')?(")', bygroups(String.Affix, String), 'string'),
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# backticks
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(r'(' + allowed_variable + ')?(```)', bygroups(String.Affix, String.Backtick), 'tqcommand'),
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(r'(' + allowed_variable + ')?(`)', bygroups(String.Affix, String.Backtick), 'command'),
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# type names
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# - names that begin a curly expression
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('(' + allowed_variable + r')(\{)',
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bygroups(Keyword.Type, Punctuation), 'curly'),
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# - names as part of bare 'where'
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(r'(where)(\s+)(' + allowed_variable + ')',
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bygroups(Keyword, Text, Keyword.Type)),
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# - curly expressions in general
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(r'(\{)', Punctuation, 'curly'),
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# - names as part of type declaration
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(r'(abstract[ \t]+type|primitive[ \t]+type|mutable[ \t]+struct|struct)([\s()]+)(' +
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allowed_variable + r')', bygroups(Keyword, Text, Keyword.Type)),
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# macros
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(r'@' + allowed_variable, Name.Decorator),
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(words([*OPERATORS_LIST, '..', '.', *DOTTED_OPERATORS_LIST],
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prefix='@', suffix=operator_suffixes), Name.Decorator),
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# keywords
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(words(KEYWORD_LIST, suffix=r'\b'), Keyword),
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# builtin types
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(words(BUILTIN_LIST, suffix=r'\b'), Keyword.Type),
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# builtin literals
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(words(LITERAL_LIST, suffix=r'\b'), Name.Builtin),
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# names
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(allowed_variable, Name),
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# numbers
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(r'(\d+((_\d+)+)?\.(?!\.)(\d+((_\d+)+)?)?|\.\d+((_\d+)+)?)([eEf][+-]?[0-9]+)?', Number.Float),
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(r'\d+((_\d+)+)?[eEf][+-]?[0-9]+', Number.Float),
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(r'0x[a-fA-F0-9]+((_[a-fA-F0-9]+)+)?(\.([a-fA-F0-9]+((_[a-fA-F0-9]+)+)?)?)?p[+-]?\d+', Number.Float),
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(r'0b[01]+((_[01]+)+)?', Number.Bin),
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(r'0o[0-7]+((_[0-7]+)+)?', Number.Oct),
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(r'0x[a-fA-F0-9]+((_[a-fA-F0-9]+)+)?', Number.Hex),
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(r'\d+((_\d+)+)?', Number.Integer),
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# single dot operator matched last to permit e.g. ".1" as a float
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(words(['.']), Operator),
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],
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"blockcomment": [
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(r'[^=#]', Comment.Multiline),
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(r'#=', Comment.Multiline, '#push'),
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(r'=#', Comment.Multiline, '#pop'),
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(r'[=#]', Comment.Multiline),
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],
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'curly': [
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(r'\{', Punctuation, '#push'),
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(r'\}', Punctuation, '#pop'),
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(allowed_variable, Keyword.Type),
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include('root'),
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],
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'tqrawstring': [
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(r'"""', String, '#pop'),
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(r'([^"]|"[^"][^"])+', String),
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],
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'rawstring': [
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(r'"', String, '#pop'),
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(r'\\"', String.Escape),
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(r'([^"\\]|\\[^"])+', String),
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],
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# Interpolation is defined as "$" followed by the shortest full expression, which is
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# something we can't parse.
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# Include the most common cases here: $word, and $(paren'd expr).
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'interp': [
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(r'\$' + allowed_variable, String.Interpol),
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(r'(\$)(\()', bygroups(String.Interpol, Punctuation), 'in-intp'),
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],
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'in-intp': [
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(r'\(', Punctuation, '#push'),
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(r'\)', Punctuation, '#pop'),
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include('root'),
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],
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'string': [
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(r'(")(' + allowed_variable + r'|\d+)?', bygroups(String, String.Affix), '#pop'),
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# FIXME: This escape pattern is not perfect.
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(r'\\([\\"\'$nrbtfav]|(x|u|U)[a-fA-F0-9]+|\d+)', String.Escape),
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include('interp'),
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# @printf and @sprintf formats
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(r'%[-#0 +]*([0-9]+|[*])?(\.([0-9]+|[*]))?[hlL]?[E-GXc-giorsux%]',
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String.Interpol),
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(r'[^"$%\\]+', String),
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(r'.', String),
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],
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'tqstring': [
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(r'(""")(' + allowed_variable + r'|\d+)?', bygroups(String, String.Affix), '#pop'),
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(r'\\([\\"\'$nrbtfav]|(x|u|U)[a-fA-F0-9]+|\d+)', String.Escape),
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include('interp'),
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(r'[^"$%\\]+', String),
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(r'.', String),
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],
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'regex': [
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(r'(")([imsxa]*)?', bygroups(String.Regex, String.Affix), '#pop'),
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(r'\\"', String.Regex),
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(r'[^\\"]+', String.Regex),
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],
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'tqregex': [
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(r'(""")([imsxa]*)?', bygroups(String.Regex, String.Affix), '#pop'),
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(r'[^"]+', String.Regex),
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],
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'command': [
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(r'(`)(' + allowed_variable + r'|\d+)?', bygroups(String.Backtick, String.Affix), '#pop'),
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(r'\\[`$]', String.Escape),
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include('interp'),
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(r'[^\\`$]+', String.Backtick),
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(r'.', String.Backtick),
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],
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'tqcommand': [
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(r'(```)(' + allowed_variable + r'|\d+)?', bygroups(String.Backtick, String.Affix), '#pop'),
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(r'\\\$', String.Escape),
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include('interp'),
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(r'[^\\`$]+', String.Backtick),
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(r'.', String.Backtick),
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],
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}
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def analyse_text(text):
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return shebang_matches(text, r'julia')
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class JuliaConsoleLexer(Lexer):
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"""
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For Julia console sessions. Modeled after MatlabSessionLexer.
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.. versionadded:: 1.6
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"""
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name = 'Julia console'
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aliases = ['jlcon', 'julia-repl']
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def get_tokens_unprocessed(self, text):
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jllexer = JuliaLexer(**self.options)
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start = 0
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curcode = ''
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insertions = []
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output = False
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error = False
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for line in text.splitlines(True):
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if line.startswith('julia>'):
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insertions.append((len(curcode), [(0, Generic.Prompt, line[:6])]))
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curcode += line[6:]
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output = False
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error = False
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elif line.startswith('help?>') or line.startswith('shell>'):
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yield start, Generic.Prompt, line[:6]
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yield start + 6, Text, line[6:]
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output = False
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error = False
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elif line.startswith(' ') and not output:
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insertions.append((len(curcode), [(0, Text, line[:6])]))
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curcode += line[6:]
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else:
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if curcode:
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yield from do_insertions(
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insertions, jllexer.get_tokens_unprocessed(curcode))
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curcode = ''
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insertions = []
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if line.startswith('ERROR: ') or error:
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yield start, Generic.Error, line
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error = True
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else:
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yield start, Generic.Output, line
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output = True
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start += len(line)
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if curcode:
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yield from do_insertions(
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insertions, jllexer.get_tokens_unprocessed(curcode))
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