73 lines
1.7 KiB
Python
73 lines
1.7 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# vim:fenc=utf-8
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#
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# Copyright © 2017 lafrite <lafrite@Poivre>
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#
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# Distributed under terms of the MIT license.
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"""
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Expression
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"""
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from ..core import tree2txt, tree2tex
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class Render(object):
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""" Object which render Expression or token """
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def __init__(self, default="txt"):
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self._default = default
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self._render = default
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self.renders = {}
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def register_render(self, name, func, attribute):
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""" register a render """
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try:
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self.renders[name]
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except KeyError:
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self.renders[name] = {"name": name, "func": func, "attribute": attribute}
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else:
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raise ValueError("This render name already exists")
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@property
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def render_name(self):
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return self._render
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@property
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def render(self):
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return self.renders[self._render]
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def __call__(self, mo_tree, tmp_render=''):
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if tmp_render:
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r = self.renders[tmp_render]
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else:
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r = self.render
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try:
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return r["func"](mo_tree)
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except ValueError:
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pass
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try:
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return getattr(mo_tree, r["attribute"])
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except AttributeError:
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return str(mo_tree)
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def set_render(self, render):
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""" Define the render """
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if render in self.renders.keys():
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self._render = render
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else:
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raise ValueError("This render does not exists")
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render = Render()
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render.register_render("txt", tree2txt, "__txt__")
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render.register_render("tex", tree2tex, "__tex__")
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# -----------------------------
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# Reglages pour 'vim'
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# vim:set autoindent expandtab tabstop=4 shiftwidth=4:
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# cursor: 16 del
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