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+# -*- coding: utf-8 -*-
+"""
+ pygments.lexers.scripting
+ ~~~~~~~~~~~~~~~~~~~~~~~~~
+
+ Lexer for scripting and embedded languages.
+
+ :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
+ :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+from pygments.lexer import RegexLexer, include, bygroups, default, combined
+from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
+ Number, Punctuation
+from pygments.util import get_bool_opt, get_list_opt, iteritems
+
+__all__ = ['LuaLexer', 'MoonScriptLexer', 'ChaiscriptLexer']
+
+
+class LuaLexer(RegexLexer):
+ """
+ For `Lua <http://www.lua.org>`_ source code.
+
+ Additional options accepted:
+
+ `func_name_highlighting`
+ If given and ``True``, highlight builtin function names
+ (default: ``True``).
+ `disabled_modules`
+ If given, must be a list of module names whose function names
+ should not be highlighted. By default all modules are highlighted.
+
+ To get a list of allowed modules have a look into the
+ `_luabuiltins` module:
+
+ .. sourcecode:: pycon
+
+ >>> from pygments.lexers._luabuiltins import MODULES
+ >>> MODULES.keys()
+ ['string', 'coroutine', 'modules', 'io', 'basic', ...]
+ """
+
+ name = 'Lua'
+ aliases = ['lua']
+ filenames = ['*.lua', '*.wlua']
+ mimetypes = ['text/x-lua', 'application/x-lua']
+
+ tokens = {
+ 'root': [
+ # lua allows a file to start with a shebang
+ (r'#!(.*?)$', Comment.Preproc),
+ default('base'),
+ ],
+ 'base': [
+ (r'(?s)--\[(=*)\[.*?\]\1\]', Comment.Multiline),
+ ('--.*$', Comment.Single),
+
+ (r'(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?', Number.Float),
+ (r'(?i)\d+e[+-]?\d+', Number.Float),
+ ('(?i)0x[0-9a-f]*', Number.Hex),
+ (r'\d+', Number.Integer),
+
+ (r'\n', Text),
+ (r'[^\S\n]', Text),
+ # multiline strings
+ (r'(?s)\[(=*)\[.*?\]\1\]', String),
+
+ (r'(==|~=|<=|>=|\.\.\.|\.\.|[=+\-*/%^<>#])', Operator),
+ (r'[\[\]\{\}\(\)\.,:;]', Punctuation),
+ (r'(and|or|not)\b', Operator.Word),
+
+ ('(break|do|else|elseif|end|for|if|in|repeat|return|then|until|'
+ r'while)\b', Keyword),
+ (r'(local)\b', Keyword.Declaration),
+ (r'(true|false|nil)\b', Keyword.Constant),
+
+ (r'(function)\b', Keyword, 'funcname'),
+
+ (r'[A-Za-z_]\w*(\.[A-Za-z_]\w*)?', Name),
+
+ ("'", String.Single, combined('stringescape', 'sqs')),
+ ('"', String.Double, combined('stringescape', 'dqs'))
+ ],
+
+ 'funcname': [
+ (r'\s+', Text),
+ ('(?:([A-Za-z_]\w*)(\.))?([A-Za-z_]\w*)',
+ bygroups(Name.Class, Punctuation, Name.Function), '#pop'),
+ # inline function
+ ('\(', Punctuation, '#pop'),
+ ],
+
+ # if I understand correctly, every character is valid in a lua string,
+ # so this state is only for later corrections
+ 'string': [
+ ('.', String)
+ ],
+
+ 'stringescape': [
+ (r'''\\([abfnrtv\\"']|\d{1,3})''', String.Escape)
+ ],
+
+ 'sqs': [
+ ("'", String, '#pop'),
+ include('string')
+ ],
+
+ 'dqs': [
+ ('"', String, '#pop'),
+ include('string')
+ ]
+ }
+
+ def __init__(self, **options):
+ self.func_name_highlighting = get_bool_opt(
+ options, 'func_name_highlighting', True)
+ self.disabled_modules = get_list_opt(options, 'disabled_modules', [])
+
+ self._functions = set()
+ if self.func_name_highlighting:
+ from pygments.lexers._luabuiltins import MODULES
+ for mod, func in iteritems(MODULES):
+ if mod not in self.disabled_modules:
+ self._functions.update(func)
+ RegexLexer.__init__(self, **options)
+
+ def get_tokens_unprocessed(self, text):
+ for index, token, value in \
+ RegexLexer.get_tokens_unprocessed(self, text):
+ if token is Name:
+ if value in self._functions:
+ yield index, Name.Builtin, value
+ continue
+ elif '.' in value:
+ a, b = value.split('.')
+ yield index, Name, a
+ yield index + len(a), Punctuation, u'.'
+ yield index + len(a) + 1, Name, b
+ continue
+ yield index, token, value
+
+
+class MoonScriptLexer(LuaLexer):
+ """
+ For `MoonScript <http://moonscript.org>`_ source code.
+
+ .. versionadded:: 1.5
+ """
+
+ name = "MoonScript"
+ aliases = ["moon", "moonscript"]
+ filenames = ["*.moon"]
+ mimetypes = ['text/x-moonscript', 'application/x-moonscript']
+
+ tokens = {
+ 'root': [
+ (r'#!(.*?)$', Comment.Preproc),
+ default('base'),
+ ],
+ 'base': [
+ ('--.*$', Comment.Single),
+ (r'(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?', Number.Float),
+ (r'(?i)\d+e[+-]?\d+', Number.Float),
+ (r'(?i)0x[0-9a-f]*', Number.Hex),
+ (r'\d+', Number.Integer),
+ (r'\n', Text),
+ (r'[^\S\n]+', Text),
+ (r'(?s)\[(=*)\[.*?\]\1\]', String),
+ (r'(->|=>)', Name.Function),
+ (r':[a-zA-Z_]\w*', Name.Variable),
+ (r'(==|!=|~=|<=|>=|\.\.\.|\.\.|[=+\-*/%^<>#!.\\:])', Operator),
+ (r'[;,]', Punctuation),
+ (r'[\[\]\{\}\(\)]', Keyword.Type),
+ (r'[a-zA-Z_]\w*:', Name.Variable),
+ (r"(class|extends|if|then|super|do|with|import|export|"
+ r"while|elseif|return|for|in|from|when|using|else|"
+ r"and|or|not|switch|break)\b", Keyword),
+ (r'(true|false|nil)\b', Keyword.Constant),
+ (r'(and|or|not)\b', Operator.Word),
+ (r'(self)\b', Name.Builtin.Pseudo),
+ (r'@@?([a-zA-Z_]\w*)?', Name.Variable.Class),
+ (r'[A-Z]\w*', Name.Class), # proper name
+ (r'[A-Za-z_]\w*(\.[A-Za-z_]\w*)?', Name),
+ ("'", String.Single, combined('stringescape', 'sqs')),
+ ('"', String.Double, combined('stringescape', 'dqs'))
+ ],
+ 'stringescape': [
+ (r'''\\([abfnrtv\\"']|\d{1,3})''', String.Escape)
+ ],
+ 'sqs': [
+ ("'", String.Single, '#pop'),
+ (".", String)
+ ],
+ 'dqs': [
+ ('"', String.Double, '#pop'),
+ (".", String)
+ ]
+ }
+
+ def get_tokens_unprocessed(self, text):
+ # set . as Operator instead of Punctuation
+ for index, token, value in LuaLexer.get_tokens_unprocessed(self, text):
+ if token == Punctuation and value == ".":
+ token = Operator
+ yield index, token, value
+
+
+class ChaiscriptLexer(RegexLexer):
+ """
+ For `ChaiScript <http://chaiscript.com/>`_ source code.
+
+ .. versionadded:: 2.0
+ """
+
+ name = 'ChaiScript'
+ aliases = ['chai', 'chaiscript']
+ filenames = ['*.chai']
+ mimetypes = ['text/x-chaiscript', 'application/x-chaiscript']
+
+ flags = re.DOTALL
+ tokens = {
+ 'commentsandwhitespace': [
+ (r'\s+', Text),
+ (r'//.*?\n', Comment.Single),
+ (r'/\*.*?\*/', Comment.Multiline),
+ (r'^\#.*?\n', Comment.Single)
+ ],
+ 'slashstartsregex': [
+ include('commentsandwhitespace'),
+ (r'/(\\.|[^[/\\\n]|\[(\\.|[^\]\\\n])*])+/'
+ r'([gim]+\b|\B)', String.Regex, '#pop'),
+ (r'(?=/)', Text, ('#pop', 'badregex')),
+ default('#pop')
+ ],
+ 'badregex': [
+ ('\n', Text, '#pop')
+ ],
+ 'root': [
+ include('commentsandwhitespace'),
+ (r'\n', Text),
+ (r'[^\S\n]+', Text),
+ (r'\+\+|--|~|&&|\?|:|\|\||\\(?=\n)|\.\.'
+ r'(<<|>>>?|==?|!=?|[-<>+*%&\|\^/])=?', Operator, 'slashstartsregex'),
+ (r'[{(\[;,]', Punctuation, 'slashstartsregex'),
+ (r'[})\].]', Punctuation),
+ (r'[=+\-*/]', Operator),
+ (r'(for|in|while|do|break|return|continue|if|else|'
+ r'throw|try|catch'
+ r')\b', Keyword, 'slashstartsregex'),
+ (r'(var)\b', Keyword.Declaration, 'slashstartsregex'),
+ (r'(attr|def|fun)\b', Keyword.Reserved),
+ (r'(true|false)\b', Keyword.Constant),
+ (r'(eval|throw)\b', Name.Builtin),
+ (r'`\S+`', Name.Builtin),
+ (r'[$a-zA-Z_]\w*', Name.Other),
+ (r'[0-9][0-9]*\.[0-9]+([eE][0-9]+)?[fd]?', Number.Float),
+ (r'0x[0-9a-fA-F]+', Number.Hex),
+ (r'[0-9]+', Number.Integer),
+ (r'"', String.Double, 'dqstring'),
+ (r"'(\\\\|\\'|[^'])*'", String.Single),
+ ],
+ 'dqstring': [
+ (r'\${[^"}]+?}', String.Iterpol),
+ (r'\$', String.Double),
+ (r'\\\\', String.Double),
+ (r'\\"', String.Double),
+ (r'[^\\\\\\"$]+', String.Double),
+ (r'"', String.Double, '#pop'),
+ ],
+ }
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