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diff --git a/project/templates/grasp.html b/project/templates/grasp.html deleted file mode 100644 index a213c02..0000000 --- a/project/templates/grasp.html +++ /dev/null @@ -1,76 +0,0 @@ - -{%- extends "base.html" -%} - - - -{%- block title -%}Grasp Interpreter{%- endblock -%} - - - -{%- block content %} -<h4>Grasp Interpreter</h4> - -<p>Git repository: <a href="/cgi-bin/cgit.cgi/esoteric">Link</a></p> - -<h5>1/1/2017</h5> - -<p>Like Lisp, the esoteric programming language <a href="http://esolangs.org/wiki/Grasp" -class="external">Grasp</a> is a homoiconic language that exclusively uses a single datatype. Except -instead of lists, it uses directed graphs.</p> - -<p>A Grasp program is initialised with instruction pointers to those nodes in the graph that have -a "name" edge to a node with the value "grasp:main". The nodes at each instruction pointer are -evaluated and the pointer then updated by following an available "next" edge. This continues until -all instruction pointers have no more "next" edges to follow.</p> - -<div class="figure"> - <img src="/img/grasp_helloworld.png" - alt="Hello World in Grasp" - height="176" - width="268" /> - <div class="figcaption">Hello World in Grasp</div> -</div> - -<p>In the <a href="https://github.com/fis/grajsp/wiki/Grasp-specification" class="external">current -specification</a>, the actions that can be performed are:</p> - -<ul> - <li>Add or delete an edge</li> - <li>Change the value of a node</li> - <li>Add, subtract, multiply, divide, or modulo node values</li> - <li>Call and return from functions, which take the form of subgraphs with named entry points - </li> - <li>Read and write from arbitrary file handles</li> - <li>Push, pop and pick a section of nodes arranged to act as a stack</li> -</ul> - -<p>The execution of a node may be skipped by having "cond" edges pointing to either zero values or -non-numeric values. Also, due to the way instruction pointers update and the way several -instructions are defined, there is a measure of non-determinism that can be introduced depending on -what edges are available.</p> - -<p>The language seemed like an interesting enough idea, but unfortunately nobody had done anything -with it, and there was only a specification. This has now been fixed. The interpreter currently -uses a subset of the <a href="http://www.graphviz.org/doc/info/lang.html" class="external">DOT graph -description language</a> for the file format, to enable a text format as well as relatively easy -conversion to a graph image.</p> - -<p>The above example is recorded as follows:</p> -<div class="precontain"> -<code> -digraph { - 1 [label="puts"] - 2 [label="grasp:main"] - 3 [label="Hello world!"] - - 1 -> 2 [label="name"] - 1 -> 3 [label="in"] -} -</code> -</div> - -<p>If a format that more readily converts to a comprehensible graph image is found, a parser for it -may be added.</p> -{% endblock -%} - - |