52 lines
863 B
JavaScript
52 lines
863 B
JavaScript
'use strict';
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function exec(gen) {
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return new Promise(function(resolve, reject) {
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function step(value, rejection) {
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var next;
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try {
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if (rejection)
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next = gen.throw(value);
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else
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next = gen.next(value);
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} catch (e) {
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reject(e);
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return;
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}
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if (next.done) {
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resolve(next.value);
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return;
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}
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if (!(next.value instanceof Promise)) {
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step(next.value);
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return;
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}
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next.value.then(step, function(e) {
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step(e, true);
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});
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}
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step(undefined);
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});
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}
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function spawn(generator, self) {
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var gen = generator.call(self);
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return exec(gen);
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}
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function co(generator) {
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return function() {
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var gen = generator.apply(this, arguments);
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return exec(gen);
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};
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}
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spawn.co = co;
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module.exports = spawn;
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