"""
pygments.lexers.julia
~~~~~~~~~~~~~~~~~~~~~
Lexers for the Julia language.
:copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import Lexer, RegexLexer, bygroups, do_insertions, \
words, include
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Generic, Whitespace
from pygments.util import shebang_matches
from pygments.lexers._julia_builtins import OPERATORS_LIST, DOTTED_OPERATORS_LIST, \
KEYWORD_LIST, BUILTIN_LIST, LITERAL_LIST
__all__ = ['JuliaLexer', 'JuliaConsoleLexer']
# see https://docs.julialang.org/en/v1/manual/variables/#Allowed-Variable-Names
allowed_variable = \
'(?:[a-zA-Z_\u00A1-\U0010ffff][a-zA-Z_0-9!\u00A1-\U0010ffff]*)'
# see https://github.com/JuliaLang/julia/blob/master/src/flisp/julia_opsuffs.h
operator_suffixes = r'[²³¹ʰʲʳʷʸˡˢˣᴬᴮᴰᴱᴳᴴᴵᴶᴷᴸᴹᴺᴼᴾᴿᵀᵁᵂᵃᵇᵈᵉᵍᵏᵐᵒᵖᵗᵘᵛᵝᵞᵟᵠᵡᵢᵣᵤᵥᵦᵧᵨᵩᵪᶜᶠᶥᶦᶫᶰᶸᶻᶿ′″‴‵‶‷⁗⁰ⁱ⁴⁵⁶⁷⁸⁹⁺⁻⁼⁽⁾ⁿ₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎ₐₑₒₓₕₖₗₘₙₚₛₜⱼⱽ]*'
class JuliaLexer(RegexLexer):
"""
For Julia source code.
.. versionadded:: 1.6
"""
name = 'Julia'
url = 'https://julialang.org/'
aliases = ['julia', 'jl']
filenames = ['*.jl']
mimetypes = ['text/x-julia', 'application/x-julia']
tokens = {
'root': [
(r'\n', Whitespace),
(r'[^\S\n]+', Whitespace),
(r'#=', Comment.Multiline, "blockcomment"),
(r'#.*$', Comment),
(r'[\[\](),;]', Punctuation),
# symbols
# intercept range expressions first
(r'(' + allowed_variable + r')(\s*)(:)(' + allowed_variable + ')',
bygroups(Name, Whitespace, Operator, Name)),
# then match :name which does not follow closing brackets, digits, or the
# ::, <:, and :> operators
(r'(?<![\]):<>\d.])(:' + allowed_variable + ')', String.Symbol),
# type assertions - excludes expressions like ::typeof(sin) and ::avec[1]
(r'(?<=::)(\s*)(' + allowed_variable + r')\b(?![(\[])',
bygroups(Whitespace, Keyword.Type)),
# type comparisons
# - MyType <: A or MyType >: A
('(' + allowed_variable + r')(\s*)([<>]:)(\s*)(' + allowed_variable + r')\b(?![(\[])',
bygroups(Keyword.Type, Whitespace, Operator, Whitespace, Keyword.Type)),
# - <: B or >: B
(r'([<>]:)(\s*)(' + allowed_variable + r')\b(?![(\[])',
bygroups(Operator, Whitespace, Keyword.Type)),
# - A <: or A >:
(r'\b(' + allowed_variable + r')(\s*)([<>]:)',
bygroups(Keyword.Type, Whitespace, Operator)),
# operators
# Suffixes aren't actually allowed on all operators, but we'll ignore that
# since those cases are invalid Julia code.
(words([*OPERATORS_LIST, *DOTTED_OPERATORS_LIST],
suffix=operator_suffixes), Operator),
(words(['.' + o for o in DOTTED_OPERATORS_LIST],
suffix=operator_suffixes), Operator),
(words(['...', '..']), Operator),
# NOTE
# Patterns below work only for definition sites and thus hardly reliable.
#
# functions
# (r'(function)(\s+)(' + allowed_variable + ')',
# bygroups(Keyword, Text, Name.Function)),
# chars
(r"'(\\.|\\[0-7]{1,3}|\\x[a-fA-F0-9]{1,3}|\\u[a-fA-F0-9]{1,4}|"
r"\\U[a-fA-F0-9]{1,6}|[^\\\'\n])'", String.Char),
# try to match trailing transpose
(r'(?<=[.\w)\]])(\'' + operator_suffixes + ')+', Operator),
# raw strings
(r'(raw)(""")', bygroups(String.Affix, String), 'tqrawstring'),
(r'(raw)(")', bygroups(String.Affix, String), 'rawstring'),
# regular expressions
(r'(r)(""")', bygroups(String.Affix, String.Regex), 'tqregex'),
(r'(r)(")', bygroups(String.Affix, String.Regex), 'regex'),
# other strings
(r'(' + allowed_variable + ')?(""")',
bygroups(String.Affix, String), 'tqstring'),
(r'(' + allowed_variable + ')?(")',
bygroups(String.Affix, String), 'string'),
# backticks
(r'(' + allowed_variable + ')?(```)',
bygroups(String.Affix, String.Backtick), 'tqcommand'),
(r'(' + allowed_variable + ')?(`)',
bygroups(String.Affix, String.Backtick), 'command'),
# type names
# - names that begin a curly expression
('(' + allowed_variable + r')(\{)',
bygroups(Keyword.Type, Punctuation), 'curly'),
# - names as part of bare 'where'
(r'(where)(\s+)(' + allowed_variable + ')',
bygroups(Keyword, Whitespace, Keyword.Type)),
# - curly expressions in general
(r'(\{)', Punctuation, 'curly'),
# - names as part of type declaration
(r'(abstract|primitive)([ \t]+)(type\b)([\s()]+)(' +
allowed_variable + r')',
bygroups(Keyword, Whitespace, Keyword, Text, Keyword.Type)),
(r'(mutable(?=[ \t]))?([ \t]+)?(struct\b)([\s()]+)(' +
allowed_variable + r')',
bygroups(Keyword, Whitespace, Keyword, Text, Keyword.Type)),
# macros
(r'@' + allowed_variable, Name.Decorator),
(words([*OPERATORS_LIST, '..', '.', *DOTTED_OPERATORS_LIST],
prefix='@', suffix=operator_suffixes), Name.Decorator),
# keywords
(words(KEYWORD_LIST, suffix=r'\b'), Keyword),
# builtin types
(words(BUILTIN_LIST, suffix=r'\b'), Keyword.Type),
# builtin literals
(words(LITERAL_LIST, suffix=r'\b'), Name.Builtin),
# names
(allowed_variable, Name),
# numbers
(r'(\d+((_\d+)+)?\.(?!\.)(\d+((_\d+)+)?)?|\.\d+((_\d+)+)?)([eEf][+-]?[0-9]+)?', Number.Float),
(r'\d+((_\d+)+)?[eEf][+-]?[0-9]+', Number.Float),
(r'0x[a-fA-F0-9]+((_[a-fA-F0-9]+)+)?(\.([a-fA-F0-9]+((_[a-fA-F0-9]+)+)?)?)?p[+-]?\d+', Number.Float),
(r'0b[01]+((_[01]+)+)?', Number.Bin),
(r'0o[0-7]+((_[0-7]+)+)?', Number.Oct),
(r'0x[a-fA-F0-9]+((_[a-fA-F0-9]+)+)?', Number.Hex),
(r'\d+((_\d+)+)?', Number.Integer),
# single dot operator matched last to permit e.g. ".1" as a float
(words(['.']), Operator),
],
"blockcomment": [
(r'[^=#]', Comment.Multiline),
(r'#=', Comment.Multiline, '#push'),
(r'=#', Comment.Multiline, '#pop'),
(r'[=#]', Comment.Multiline),
],
'curly': [
(r'\{', Punctuation, '#push'),
(r'\}', Punctuation, '#pop'),
(allowed_variable, Keyword.Type),
include('root'),
],
'tqrawstring': [
(r'"""', String, '#pop'),
(r'([^"]|"[^"][^"])+', String),
],
'rawstring': [
(r'"', String, '#pop'),
(r'\\"', String.Escape),
(r'([^"\\]|\\[^"])+', String),
],
# Interpolation is defined as "$" followed by the shortest full
# expression, which is something we can't parse. Include the most
# common cases here: $word, and $(paren'd expr).
'interp': [
(r'\$' + allowed_variable, String.Interpol),
(r'(\$)(\()', bygroups(String.Interpol, Punctuation), 'in-intp'),
],
'in-intp': [
(r'\(', Punctuation, '#push'),
(r'\)', Punctuation, '#pop'),
include('root'),
],
'string': [
(r'(")(' + allowed_variable + r'|\d+)?',
bygroups(String, String.Affix), '#pop'),
# FIXME: This escape pattern is not perfect.
(r'\\([\\"\'$nrbtfav]|(x|u|U)[a-fA-F0-9]+|\d+)', String.Escape),
include('interp'),
# @printf and @sprintf formats
(r'%[-#0 +]*([0-9]+|[*])?(\.([0-9]+|[*]))?[hlL]?[E-GXc-giorsux%]',
String.Interpol),
(r'[^"$%\\]+', String),
(r'.', String),
],
'tqstring': [
(r'(""")(' + allowed_variable + r'|\d+)?',
bygroups(String, String.Affix), '#pop'),
(r'\\([\\"\'$nrbtfav]|(x|u|U)[a-fA-F0-9]+|\d+)', String.Escape),
include('interp'),
(r'[^"$%\\]+', String),
(r'.', String),
],
'regex': [
(r'(")([imsxa]*)?', bygroups(String.Regex, String.Affix), '#pop'),
(r'\\"', String.Regex),
(r'[^\\"]+', String.Regex),
],
'tqregex': [
(r'(""")([imsxa]*)?', bygroups(String.Regex, String.Affix), '#pop'),
(r'[^"]+', String.Regex),
],
'command': [
(r'(`)(' + allowed_variable + r'|\d+)?',
bygroups(String.Backtick, String.Affix), '#pop'),
(r'\\[`$]', String.Escape),
include('interp'),
(r'[^\\`$]+', String.Backtick),
(r'.', String.Backtick),
],
'tqcommand': [
(r'(```)(' + allowed_variable + r'|\d+)?',
bygroups(String.Backtick, String.Affix), '#pop'),
(r'\\\$', String.Escape),
include('interp'),
(r'[^\\`$]+', String.Backtick),
(r'.', String.Backtick),
],
}
def analyse_text(text):
return shebang_matches(text, r'julia')
class JuliaConsoleLexer(Lexer):
"""
For Julia console sessions. Modeled after MatlabSessionLexer.
.. versionadded:: 1.6
"""
name = 'Julia console'
aliases = ['jlcon', 'julia-repl']
def get_tokens_unprocessed(self, text):
jllexer = JuliaLexer(**self.options)
start = 0
curcode = ''
insertions = []
output = False
error = False
for line in text.splitlines(keepends=True):
if line.startswith('julia>'):
insertions.append((len(curcode), [(0, Generic.Prompt, line[:6])]))
curcode += line[6:]
output = False
error = False
elif line.startswith('help?>') or line.startswith('shell>'):
yield start, Generic.Prompt, line[:6]
yield start + 6, Text, line[6:]
output = False
error = False
elif line.startswith(' ') and not output:
insertions.append((len(curcode), [(0, Whitespace, line[:6])]))
curcode += line[6:]
else:
if curcode:
yield from do_insertions(
insertions, jllexer.get_tokens_unprocessed(curcode))
curcode = ''
insertions = []
if line.startswith('ERROR: ') or error:
yield start, Generic.Error, line
error = True
else:
yield start, Generic.Output, line
output = True
start += len(line)
if curcode:
yield from do_insertions(
insertions, jllexer.get_tokens_unprocessed(curcode))