# -*- coding: utf-8 -*-
"""
    pygments.lexers.misc.nit
    ~~~~~~~~~~~~~~~~~~~~~~~~

    Lexer for the Nit language.

    :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

from pygments.lexer import RegexLexer, words
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
    Number, Punctuation

__all__ = ['NitLexer']


class NitLexer(RegexLexer):
    """
    For `nit <http://nitlanguage.org>`_ source.

    .. versionadded:: 2.0
    """

    name = 'Nit'
    aliases = ['nit']
    filenames = ['*.nit']
    tokens = {
        'root': [
            (r'#.*?$', Comment.Single),
            (words((
                'package', 'module', 'import', 'class', 'abstract', 'interface',
                'universal', 'enum', 'end', 'fun', 'type', 'init', 'redef',
                'isa', 'do', 'readable', 'writable', 'var', 'intern', 'extern',
                'public', 'protected', 'private', 'intrude', 'if', 'then',
                'else', 'while', 'loop', 'for', 'in', 'and', 'or', 'not',
                'implies', 'return', 'continue', 'break', 'abort', 'assert',
                'new', 'is', 'once', 'super', 'self', 'true', 'false', 'nullable',
                'null', 'as', 'isset', 'label', '__debug__'), suffix='(?=( |\n|\t|\r|\())'),
             Keyword),
            (r'[A-Z][A-Za-z0-9_]*', Name.Class),
            (r'"""(([^\'\\]|\\.)|\\r|\\n)*(({{?)?(""?{{?)*""""*)', String),  # Simple long string
            (r'\'\'\'(((\\.|[^\'\\])|\\r|\\n)|\'((\\.|[^\'\\])|\\r|\\n)|'
             r'\'\'((\\.|[^\'\\])|\\r|\\n))*\'\'\'', String),  # Simple long string alt
            (r'"""(([^\'\\]|\\.)|\\r|\\n)*((""?)?({{?""?)*{{{{*)', String),  # Start long string
            (r'}}}(((\\.|[^\'\\])|\\r|\\n))*(""?)?({{?""?)*{{{{*', String),  # Mid long string
            (r'}}}(((\\.|[^\'\\])|\\r|\\n))*({{?)?(""?{{?)*""""*', String),  # End long string
            (r'"(\\.|([^"}{\\]))*"', String),  # Simple String
            (r'"(\\.|([^"}{\\]))*{', String),  # Start string
            (r'}(\\.|([^"}{\\]))*{', String),  # Mid String
            (r'}(\\.|([^"}{\\]))*"', String),  # End String
            (r'(\'[^\'\\]\')|(\'\\.\')', String.Char),
            (r'[0-9]+', Number.Integer),
            (r'[0-9]*.[0-9]+', Number.Float),
            (r'0(x|X)[0-9A-Fa-f]+', Number.Hex),
            (r'[a-z][A-Za-z0-9_]*', Name),
            (r'_[A-Za-z0-9_]+', Name.Variable.Instance),
            (r'==|!=|<==>|>=|>>|>|<=|<<|<|\+|-|=|/|\*|%|\+=|-=|!|@', Operator),
            (r'\(|\)|\[|\]|,|\.\.\.|\.\.|\.|::|:', Punctuation),
            (r'`{[^`]*`}', Text),  # Extern blocks won't be Lexed by Nit
            ('(\r|\n| |\t)+', Text),
        ],
    }