# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
if __name__ == '__main__': from __init__ import init; init()
from unittest import TestCase, main
import random
import ranger.colorschemes
from ranger.gui.colorscheme import ColorScheme
from ranger.gui.context import CONTEXT_KEYS
class Test(TestCase):
def setUp(self):
import random
import curses
curses.COLORS = 88
schemes = []
for key, mod in vars(ranger.colorschemes).items():
if type(mod) == type(random):
for key, var in vars(mod).items():
if type(var) == type and issubclass(var, ColorScheme) \
and var != ColorScheme:
schemes.append(var)
self.schemes = set(schemes)
def test_colorschemes(self):
def test(scheme):
scheme.get() # test with no arguments
for i in range(300): # test with a bunch of random (valid) arguments
sample = random.sample(CONTEXT_KEYS, random.randint(2, 9))
scheme.get(*sample)
for scheme in selfpre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>Mu - exception2.mu</title>
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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example program showing exceptions built out of delimited continuations.</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment"># Slightly less klunky than exception1.mu.</span>
<span id="L3" class="LineNr"> 3 </span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># Since Mu is statically typed, we can't build an all-purpose higher-order</span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment"># function called 'try'; it wouldn't know how many arguments the function</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment"># passed to it needs to take, what their types are, etc. Instead, until Mu</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment"># gets macros we'll directly use the continuation primitives.</span>
<span id="L8" class="LineNr"> 8 </span>
<span id="L9" class="LineNr"> 9 </span><span class="muData">exclusive-container</span> <a href='exception2.mu.html#L9'>error-or</a>:_elem [
<span id="L10" class="LineNr">10 </span> error:text
<span id="L11" class="LineNr">11 </span> value:_elem
<span id="L12" class="LineNr">12 </span>]
<span id="L13" class="LineNr">13 </span>
<span id="L14" class="LineNr">14 </span><span class="muRecipe">def</span> <a href='exception2.mu.html#L14'>main</a> [
<span id="L15" class="LineNr">15 </span> <span class="Constant">local-scope</span>
<span id="L16" class="LineNr">16 </span> <a href='exception2.mu.html#L21'>foo</a><span class="Constant"> false/no-exception</span>
<span id="L17" class="LineNr">17 </span> <a href='exception2.mu.html#L21'>foo</a><span class="Constant"> true/raise-exception</span>
<span id="L18" class="LineNr">18 </span>]
<span id="L19" class="LineNr">19 </span>
<span id="L20" class="LineNr">20 </span><span class="Comment"># example showing exception handling</span>
<span id="L21" class="LineNr">21 </span><span class="muRecipe">def</span> <a href='exception2.mu.html#L21'>foo</a> raise-exception?:bool [
<span id="L22" class="LineNr">22 </span> <span class="Constant">local-scope</span>
<span id="L23" class="LineNr">23 </span> <span class="Constant">load-inputs</span>
<span id="L24" class="LineNr">24 </span> <span class="Comment"># To run an instruction of the form:</span>
<span id="L25" class="LineNr">25 </span> <span class="Comment"># try f ...</span>
<span id="L26" class="LineNr">26 </span> <span class="Comment"># write this:</span>
<span id="L27" class="LineNr">27 </span> <span class="Comment"># call-with-continuation-mark 999/exception-tag, f, ...</span>
<span id="L28" class="LineNr">28 </span> <span class="Comment"># By convention we reserve tag 999 for exceptions.</span>
<span id="L29" class="LineNr">29 </span> <span class="Comment">#</span>
<span id="L30" class="LineNr">30 </span> <span class="Comment"># The other inputs and outputs to 'call-with-continuation-mark' depend on</span>
<span id="L31" class="LineNr">31 </span> <span class="Comment"># the function it is called with.</span>
<span id="L32" class="LineNr">32 </span> _, result:<a href='exception2.mu.html#L9'>error-or</a>:num <span class="Special"><-</span> <span class="muControl">call-with-continuation-mark</span> <span class="Constant">999/exception-tag</span>, <a href='exception2.mu.html#L47'>f</a>, raise-exception?
<span id="L33" class="LineNr">33 </span> <span class="Delimiter">{</span>
<span id="L34" class="LineNr">34 </span> val:num, normal-exit?:bool <span class="Special"><-</span> maybe-convert result, <span class="Constant">value:variant</span>
<span id="L35" class="LineNr">35 </span> <span class="muControl">break-unless</span> normal-exit?
<span id="L36" class="LineNr">36 </span> $print <span class="Constant">[normal exit; result ]</span> val <span class="Constant">10/newline</span>
<span id="L37" class="LineNr">37 </span> <span class="Delimiter">}</span>
<span id="L38" class="LineNr">38 </span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr">39 </span> err:text, error-exit?:bool <span class="Special"><-</span> maybe-convert result, <span class="Constant">error:variant</span>
<span id="L40" class="LineNr">40 </span> <span class="muControl">break-unless</span> error-exit?
<span id="L41" class="LineNr">41 </span> $print <span class="Constant">[error caught: ]</span> err <span class="Constant">10/newline</span>
<span id="L42" class="LineNr">42 </span> <span class="Delimiter">}</span>
<span id="L43" class="LineNr">43 </span>]
<span id="L44" class="LineNr">44 </span>
<span id="L45" class="LineNr">45 </span><span class="Comment"># Callee function that we catch exceptions in must always return using a</span>
<span id="L46" class="LineNr">46 </span><span class="Comment"># continuation.</span>
<span id="L47" class="LineNr">47 </span><span class="muRecipe">def</span> <a href='exception2.mu.html#L47'>f</a> raise-exception?:bool<span class="muRecipe"> -> </span>result:<a href='exception2.mu.html#L9'>error-or</a>:num [
<span id="L48" class="LineNr">48 </span> <span class="Constant">local-scope</span>
<span id="L49" class="LineNr">49 </span> <span class="Constant">load-inputs</span>
<span id="L50" class="LineNr">50 </span> <span class="Delimiter">{</span>
<span id="L51" class="LineNr">51 </span> <span class="muControl">break-unless</span> raise-exception?
<span id="L52" class="LineNr">52 </span> <span class="Comment"># throw/raise</span>
<span id="L53" class="LineNr">53 </span> result <span class="Special"><-</span> merge <span class="Constant">0/error</span>, <span class="Constant">[error will robinson!]</span>
<span id="L54" class="LineNr">54 </span> <span class="muControl">return-continuation-until-mark</span> <span class="Constant">999/exception-tag</span>, result
<span id="L55" class="LineNr">55 </span> <span class="Delimiter">}</span>
<span id="L56" class="LineNr">56 </span> <span class="Comment"># 'normal' return; still uses the continuation mark</span>
<span id="L57" class="LineNr">57 </span> result <span class="Special"><-</span> merge <span class="Constant">1/value</span>,<span class="Constant"> 34</span>
<span id="L58" class="LineNr">58 </span> <span class="muControl">return-continuation-until-mark</span> <span class="Constant">999/exception-tag</span>, result
<span id="L59" class="LineNr">59 </span> <span class="Comment"># dead code just to avoid errors</span>
<span id="L60" class="LineNr">60 </span> result <span class="Special"><-</span> merge <span class="Constant">1/value</span>,<span class="Constant"> 0</span>
<span id="L61" class="LineNr">61 </span> <span class="muControl"> return</span> result
<span id="L62" class="LineNr">62 </span>]
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