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# -*- coding: utf-8 -*-
"""
pygments.lexers.nimrod
~~~~~~~~~~~~~~~~~~~~~~
Lexer for the Nim language (formerly known as Nimrod).
:copyright: Copyright 2006-2019 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, default
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Punctuation, Error
__all__ = ['NimrodLexer']
class NimrodLexer(RegexLexer):
"""
For `Nim <http://nim-lang.org/>`_ source code.
.. versionadded:: 1.5
"""
name = 'Nimrod'
aliases = ['nim', 'nimrod']
filenames = ['*.nim', '*.nimrod']
mimetypes = ['text/x-nim']
flags = re.MULTILINE | re.IGNORECASE | re.UNICODE
def underscorize(words):
newWords = []
new = ""
for word in words:
for ch in word:
new += (ch + "_?")
newWords.append(new)
new = ""
return "|".join(newWords)
keywords = [
'addr', 'and', 'as', 'asm', 'atomic', 'bind', 'block', 'break', 'case',
'cast', 'concept', 'const', 'continue', 'converter', 'defer', 'discard',
'distinct', 'div', 'do', 'elif', 'else', 'end', 'enum', 'except',
'export', 'finally', 'for', 'func', 'if', 'in', 'yield', 'interface',
'is', 'isnot', 'iterator', 'let', 'macro', 'method', 'mixin', 'mod',
'not', 'notin', 'object', 'of', 'or', 'out', 'proc', 'ptr', 'raise',
'ref', 'return', 'shared', 'shl', 'shr', 'static', 'template', 'try',
'tuple', 'type', 'when', 'while', 'with', 'without', 'xor'
]
keywordsPseudo = [
'nil', 'true', 'false'
]
opWords = [
'and', 'or', 'not', 'xor', 'shl', 'shr', 'div', 'mod', 'in',
'notin', 'is', 'isnot'
]
types = [
'int', 'int8', 'int16', 'int32', 'int64', 'float', 'float32', 'float64',
'bool', 'char', 'range', 'array', 'seq', 'set', 'string'
]
tokens = {
'root': [
(r'##.*$', String.Doc),
(r'#.*$', Comment),
(r'[*=><+\-/@$~&%!?|\\\[\]]', Operator),
(r'\.\.|\.|,|\[\.|\.\]|\{\.|\.\}|\(\.|\.\)|\{|\}|\(|\)|:|\^|`|;',
Punctuation),
# Strings
(r'(?:[\w]+)"', String, 'rdqs'),
(r'"""', String, 'tdqs'),
('"', String, 'dqs'),
# Char
("'", String.Char, 'chars'),
# Keywords
(r'(%s)\b' % underscorize(opWords), Operator.Word),
(r'(p_?r_?o_?c_?\s)(?![(\[\]])', Keyword, 'funcname'),
(r'(%s)\b' % underscorize(keywords), Keyword),
(r'(%s)\b' % underscorize(['from', 'import', 'include']),
Keyword.Namespace),
(r'(v_?a_?r)\b', Keyword.Declaration),
(r'(%s)\b' % underscorize(types), Keyword.Type),
(r'(%s)\b' % underscorize(keywordsPseudo), Keyword.Pseudo),
# Identifiers
(r'\b((?![_\d])\w)(((?!_)\w)|(_(?!_)\w))*', Name),
# Numbers
(r'[0-9][0-9_]*(?=([e.]|\'f(32|64)))',
Number.Float, ('float-suffix', 'float-number')),
(r'0x[a-f0-9][a-f0-9_]*', Number.Hex, 'int-suffix'),
(r'0b[01][01_]*', Number.Bin, 'int-suffix'),
(r'0o[0-7][0-7_]*', Number.Oct, 'int-suffix'),
(r'[0-9][0-9_]*', Number.Integer, 'int-suffix'),
# Whitespace
(r'\s+', Text),
(r'.+$', Error),
],
'chars': [
(r'\\([\\abcefnrtvl"\']|x[a-f0-9]{2}|[0-9]{1,3})', String.Escape),
(r"'", String.Char, '#pop'),
(r".", String.Char)
],
'strings': [
(r'(?<!\$)\$(\d+|#|\w+)+', String.Interpol),
(r'[^\\\'"$\n]+', String),
# quotes, dollars and backslashes must be parsed one at a time
(r'[\'"\\]', String),
# unhandled string formatting sign
(r'\$', String)
# newlines are an error (use "nl" state)
],
'dqs': [
(r'\\([\\abcefnrtvl"\']|\n|x[a-f0-9]{2}|[0-9]{1,3})',
String.Escape),
(r'"', String, '#pop'),
include('strings')
],
'rdqs': [
(r'"(?!")', String, '#pop'),
(r'""', String.Escape),
include('strings')
],
'tdqs': [
(r'"""(?!")', String, '#pop'),
include('strings'),
include('nl')
],
'funcname': [
(r'((?![\d_])\w)(((?!_)\w)|(_(?!_)\w))*', Name.Function, '#pop'),
(r'`.+`', Name.Function, '#pop')
],
'nl': [
(r'\n', String)
],
'float-number': [
(r'\.(?!\.)[0-9_]*', Number.Float),
(r'e[+-]?[0-9][0-9_]*', Number.Float),
default('#pop')
],
'float-suffix': [
(r'\'f(32|64)', Number.Float),
default('#pop')
],
'int-suffix': [
(r'\'i(32|64)', Number.Integer.Long),
(r'\'i(8|16)', Number.Integer),
default('#pop')
],
}
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