yzhanjsinterpreter
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A JavaScript Interpreter Using JS itself. JavaScript 解释器，包含词法分析、语法解析和执行
17 lines (16 loc) • 654 B
JavaScript
const JSFunction = require('../JSFunction.js')
const Task = require('../Task.js')
module.exports = class extends JSFunction {
constructor(executor, promiseInstance) {
super(null, executor)
this.promiseInstance = promiseInstance
this.then = null // will pass from (then instance).call
}
call(currentEnv, args) {
const rejectReason = args[0]
const { then, executor, promiseInstance } = this
if (then !== null) executor.microTaskQueue.push(new Task(currentEnv, then, [rejectReason]))
promiseInstance.setProperty('state', { value: 'rejected' })
promiseInstance.setProperty('rejectReason', { value: rejectReason })
}
}