from __future__ import (absolute_import, division, print_function,

unicode_literals)

import six

import os, sys

from six import unichr

from math import ceil

import unicodedata

from warnings import warn

from numpy import inf, isinf

import numpy as np

import pyparsing

from pyparsing import (Combine, Group, Optional, Forward,

Literal, OneOrMore, ZeroOrMore, ParseException, Empty,

ParseResults, Suppress, oneOf, StringEnd, ParseFatalException,

FollowedBy, Regex, ParserElement, QuotedString, ParseBaseException)

if (six.PY3 and

[int(x) for x in pyparsing.__version__.split('.')] < [2, 0, 0]):

warn("Due to a bug in pyparsing <= 2.0.0 on Python 3.x, packrat parsing "

"has been disabled. Mathtext rendering will be much slower as a "

"result. Install pyparsing 2.0.0 or later to improve performance.")

else:

ParserElement.enablePackrat()

from matplotlib.afm import AFM

from matplotlib.cbook import (Bunch, get_realpath_and_stat, is_string_like,

maxdict)

from matplotlib.ft2font import (FT2Image, KERNING_DEFAULT, LOAD_FORCE_AUTOHINT,

LOAD_NO_HINTING)

from matplotlib.font_manager import findfont, FontProperties, get_font

from matplotlib._mathtext_data import (latex_to_bakoma, latex_to_standard,

tex2uni, latex_to_cmex,

stix_virtual_fonts)

from matplotlib import get_data_path, rcParams

import matplotlib.colors as mcolors

import matplotlib._png as _png

def get_unicode_index(symbol, math=True):

raise ValueError(message)

def unichr_safe(index):

return unichr(0xFFFD)

class MathtextBackend(object):

return LOAD_NO_HINTING

class MathtextBackendAgg(MathtextBackend):

return backend_agg.get_hinting_flag()

class MathtextBackendBitmap(MathtextBackendAgg):

return image, depth

class MathtextBackendPs(MathtextBackend):

used_characters)

class MathtextBackendPdf(MathtextBackend):

used_characters)

class MathtextBackendSvg(MathtextBackend):

used_characters)

class MathtextBackendPath(MathtextBackend):

self.rects)

class MathtextBackendCairo(MathtextBackend):

self.rects)

class Fonts(object):

return [(fontname, sym)]

class TruetypeFonts(Fonts):

font2, fontclass2, sym2, fontsize2, dpi)

class BakomaFonts(TruetypeFonts):

return self._size_alternatives.get(sym, [(fontname, sym)])

class UnicodeFonts(TruetypeFonts):

return [(fontname, sym)]

class DejaVuFonts(UnicodeFonts):

font_class, sym, fontsize, math)

class DejaVuSerifFonts(DejaVuFonts):

}

class DejaVuSansFonts(DejaVuFonts):

}

class StixFonts(UnicodeFonts):