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+# -*- coding: utf-8 -*-
+"""
+ pygments.lexers.chapel
+ ~~~~~~~~~~~~~~~~~~~~~~
+
+ Lexer for the Chapel language.
+
+ :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
+ :license: BSD, see LICENSE for details.
+"""
+
+from pygments.lexer import RegexLexer, bygroups, words
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+ Number, Punctuation
+
+__all__ = ['ChapelLexer']
+
+
+class ChapelLexer(RegexLexer):
+ """
+ For `Chapel <http://chapel.cray.com/>`_ source.
+
+ .. versionadded:: 2.0
+ """
+ name = 'Chapel'
+ filenames = ['*.chpl']
+ aliases = ['chapel', 'chpl']
+ # mimetypes = ['text/x-chapel']
+
+ tokens = {
+ 'root': [
+ (r'\n', Text),
+ (r'\s+', Text),
+ (r'\\\n', Text),
+
+ (r'//(.*?)\n', Comment.Single),
+ (r'/(\\\n)?[*](.|\n)*?[*](\\\n)?/', Comment.Multiline),
+
+ (r'(config|const|in|inout|out|param|ref|type|var)\b',
+ Keyword.Declaration),
+ (r'(false|nil|true)\b', Keyword.Constant),
+ (r'(bool|complex|imag|int|opaque|range|real|string|uint)\b',
+ Keyword.Type),
+ (words((
+ 'align', 'atomic', 'begin', 'break', 'by', 'cobegin', 'coforall',
+ 'continue', 'delete', 'dmapped', 'do', 'domain', 'else', 'enum',
+ 'export', 'extern', 'for', 'forall', 'if', 'index', 'inline',
+ 'iter', 'label', 'lambda', 'let', 'local', 'new', 'noinit', 'on',
+ 'otherwise', 'pragma', 'reduce', 'return', 'scan', 'select',
+ 'serial', 'single', 'sparse', 'subdomain', 'sync', 'then', 'use',
+ 'when', 'where', 'while', 'with', 'yield', 'zip'), suffix=r'\b'),
+ Keyword),
+ (r'(proc)((?:\s|\\\s)+)', bygroups(Keyword, Text), 'procname'),
+ (r'(class|module|record|union)(\s+)', bygroups(Keyword, Text),
+ 'classname'),
+
+ # imaginary integers
+ (r'\d+i', Number),
+ (r'\d+\.\d*([Ee][-+]\d+)?i', Number),
+ (r'\.\d+([Ee][-+]\d+)?i', Number),
+ (r'\d+[Ee][-+]\d+i', Number),
+
+ # reals cannot end with a period due to lexical ambiguity with
+ # .. operator. See reference for rationale.
+ (r'(\d*\.\d+)([eE][+-]?[0-9]+)?i?', Number.Float),
+ (r'\d+[eE][+-]?[0-9]+i?', Number.Float),
+
+ # integer literals
+ # -- binary
+ (r'0[bB][0-1]+', Number.Bin),
+ # -- hex
+ (r'0[xX][0-9a-fA-F]+', Number.Hex),
+ # -- octal
+ (r'0[oO][0-7]+', Number.Oct),
+ # -- decimal
+ (r'[0-9]+', Number.Integer),
+
+ # strings
+ (r'["\'](\\\\|\\"|[^"\'])*["\']', String),
+
+ # tokens
+ (r'(=|\+=|-=|\*=|/=|\*\*=|%=|&=|\|=|\^=|&&=|\|\|=|<<=|>>=|'
+ r'<=>|<~>|\.\.|by|#|\.\.\.|'
+ r'&&|\|\||!|&|\||\^|~|<<|>>|'
+ r'==|!=|<=|>=|<|>|'
+ r'[+\-*/%]|\*\*)', Operator),
+ (r'[:;,.?()\[\]{}]', Punctuation),
+
+ # identifiers
+ (r'[a-zA-Z_][\w$]*', Name.Other),
+ ],
+ 'classname': [
+ (r'[a-zA-Z_][\w$]*', Name.Class, '#pop'),
+ ],
+ 'procname': [
+ (r'[a-zA-Z_][\w$]*', Name.Function, '#pop'),
+ ],
+ }