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# -*- coding: utf-8 -*-
"""
pygments.lexers.stata
~~~~~~~~~~~~~~~~~~~~~
Lexer for Stata
:copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, include, words
from pygments.token import Comment, Keyword, Name, Number, \
String, Text, Operator
from pygments.lexers._stata_builtins import builtins_base, builtins_functions
__all__ = ['StataLexer']
class StataLexer(RegexLexer):
"""
For `Stata <http://www.stata.com/>`_ do files.
.. versionadded:: 2.2
"""
# Syntax based on
# - http://fmwww.bc.edu/RePEc/bocode/s/synlightlist.ado
# - http://github.com/isagalaev/highlight.js/blob/master/src/languages/stata.js
# - http://github.com/jpitblado/vim-stata/blob/master/syntax/stata.vim
name = 'Stata'
aliases = ['stata', 'do']
filenames = ['*.do', '*.ado']
mimetypes = ['text/x-stata', 'text/stata', 'application/x-stata']
tokens = {
'root': [
include('comments'),
include('vars-strings'),
include('numbers'),
include('keywords'),
(r'.', Text),
],
# Global and local macros; regular and special strings
'vars-strings': [
(r'\$[a-zA-Z_0-9\{]', Name.Variable.Global, 'var_validglobal'),
(r'`[a-zA-Z_0-9]{0,31}\'', Name.Variable),
(r'"', String, 'string_dquote'),
(r'`"', String, 'string_mquote'),
],
# For either string type, highlight macros as macros
'string_dquote': [
(r'"', String, '#pop'),
(r'\\\\|\\"|\\\n', String.Escape),
(r'\$', Name.Variable.Global, 'var_validglobal'),
(r'`', Name.Variable, 'var_validlocal'),
(r'[^$\$`"\\]+', String),
(r'[$"\\]', String),
],
'string_mquote': [
(r'"\'', String, '#pop'),
(r'\\\\|\\"|\\\n', String.Escape),
(r'\$', Name.Variable.Global, 'var_validglobal'),
(r'`', Name.Variable, 'var_validlocal'),
(r'[^$\$`"\\]+', String),
(r'[$"\\]', String),
],
'var_validglobal': [
(r'\{?[a-zA-Z0-9_]{0,32}\}?', Name.Variable.Global, '#pop'),
],
'var_validlocal': [
(r'[a-zA-Z0-9_]{0,31}\'', Name.Variable, '#pop'),
],
# * only OK at line start, // OK anywhere
'comments': [
(r'^\s*\*.*$', Comment),
(r'//.*', Comment.Single),
(r'/\*.*?\*/', Comment.Multiline),
(r'/[*](.|\n)*?[*]/', Comment.Multiline),
],
# Built in functions and statements
'keywords': [
(words(builtins_functions, prefix = r'\b', suffix = r'\('),
Name.Function),
(words(builtins_base, prefix = r'(^\s*|\s)', suffix = r'\b'),
Keyword),
],
# http://www.stata.com/help.cgi?operators
'operators': [
(r'-|==|<=|>=|<|>|&|!=', Operator),
(r'\*|\+|\^|/|!|~|==|~=', Operator)
],
# Stata numbers
'numbers': [
# decimal number
(r'\b[+-]?([0-9]+(\.[0-9]+)?|\.[0-9]+|\.)([eE][+-]?[0-9]+)?[i]?\b',
Number),
],
# Stata formats
'format': [
(r'%-?\d{1,2}(\.\d{1,2})?[gfe]c?', Name.Variable),
(r'%(21x|16H|16L|8H|8L)', Name.Variable),
(r'%-?(tc|tC|td|tw|tm|tq|th|ty|tg).{0,32}', Name.Variable),
(r'%[-~]?\d{1,4}s', Name.Variable),
]
}
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