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