62 lines
1.3 KiB
JavaScript
62 lines
1.3 KiB
JavaScript
'use strict';
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const stream = require('stream');
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const EventEmitter = require('events').EventEmitter;
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let lib = require('bindings')('vcd.node');
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module.exports = () => {
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const wires = {};
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const info = {stack: [wires], wires: wires};
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const s = new stream.Writable();
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// const lifee = new EventEmitter();
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// gets called by c with 1 argument, a number
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const lifemit = s.emit.bind(s);
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const triee = new EventEmitter();
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// gets called by c with 5 arguments
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// string eventName
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// bigint state->time
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// int command
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// bigint state->value
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// bigint state->mask
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const triemit = triee.emit.bind(triee);
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let triemit2 = triemit;
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const cxt = lib.init(lifemit, triemit, info);
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s._write = function (chunk, encoding, callback) {
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lib.execute(cxt, lifemit, triemit2, info, chunk);
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callback();
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};
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s.change = {
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on: (id, fn) => {
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triemit2 = triemit;
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triee.on(id, fn);
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const triggerString = triee.eventNames().join(' ') + ' ';
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lib.setTrigger(cxt, triggerString);
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},
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any: fn => {
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triemit2 = fn;
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lib.setTrigger(cxt, '\0');
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}
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};
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s.info = info;
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s.getTime = () => lib.getTime(cxt);
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s.kill = () => {
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lib.done(cxt, lifemit, triemit2, info);
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s.end();
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};
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return s;
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};
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