happybot/ok/ircconvert.js
2018-08-14 19:24:26 -04:00

74 lines
1.9 KiB
JavaScript

////////////////////////////////////
//
// A companion to oK which bridges
// the gap between k-values and
// native JavaScript types.
//
// John Earnest
//
////////////////////////////////////
//
// See ok-license.txt for the license.
// Modified by zgrep because zgrep is just that annoying.
"use strict";
function tok(v) {
if (typeof v == 'number') {
return { t:0, v:v };
}
if (v === false) { return { t:0, v:0 }; }
if (v === true) { return { t:0, v:1 }; }
if (typeof v == 'string') {
var r = [];
for(var z=0;z<v.length;z++) { r[z] = { t:1, v:v.charCodeAt(z) }; }
return { t:3, v:r };
}
if (v instanceof Array) {
var r = [];
for(var z=0;z<v.length;z++) { r[z] = tok(v[z]); }
return { t:3, v:r };
}
if (typeof v == 'object') {
var r = { t:4, k:{ t:3, v:[] }, v:{ t:3, v:[] }};
var k = Object.keys(v);
for(var z=0;z<k.length;z++) {
r.k.v.push( { t:2, v:k[z] } );
r.v.v.push( tok(v[k[z]]) );
}
return r;
}
throw new Error("cannot convert '"+v+"' to a K datatype.");
}
function tojs(v) {
if (v.t == 0 || v.t == 2) {
return v.v;
}
if (v.t == 1) {
return String.fromCharCode(v.v);
}
if (v.t == 3) {
var r = [];
var same = true;
for(var z=0;z<v.v.length;z++) { r[z] = tojs(v.v[z]); same &= v.v[z].t == v.v[0].t; }
if (same && v.v.length != 0 && v.v[0].t == 1) { return r.join(""); }
return r;
}
if (v.t == 4) {
var r = {};
for(var z=0;z<v.k.v.length;z++) { r[v.k.v[z]] = tojs(v.v.v[z]); }
return r;
}
throw new Error("cannot convert '"+JSON.stringify(v)+"' to a JavaScript datatype.");
}
function trampoline(env, name, args, body) {
// construct a function-wrapper trampoline for a pseudonative.
// this permits dyadic/triadic extension functions to be properly curryable.
var arguse = []; for(var z=0; z<args.length; z++) { arguse.push({"t":7, "v":args[z]}); }
env.put(ks(name), true, {t: 5, args:args, v: [ {"t":8,"v":name,"curry":arguse} ]});
}
this.tok = tok;
this.tojs = tojs;