47 lines
1.7 KiB
JavaScript
47 lines
1.7 KiB
JavaScript
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'use strict';
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var $TypeError = require('es-errors/type');
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var CompletionRecord = require('es-abstract/2024/CompletionRecord');
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var CreateIterResultObject = require('es-abstract/2024/CreateIterResultObject');
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var GeneratorValidate = require('./GeneratorValidate');
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var NormalCompletion = require('es-abstract/2024/NormalCompletion');
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var SLOT = require('internal-slot');
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module.exports = function GeneratorResumeAbrupt(generator, abruptCompletion, generatorBrand) {
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if (!(abruptCompletion instanceof CompletionRecord)) {
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throw new $TypeError('Assertion failed: abruptCompletion must be a Completion Record');
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}
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var state = GeneratorValidate(generator, generatorBrand); // step 1
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if (state === 'suspendedStart') { // step 2
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SLOT.set(generator, '[[GeneratorState]]', 'completed'); // step 3.a
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SLOT.set(generator, '[[GeneratorContext]]', null); // step 3.b
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state = 'completed'; // step 3.c
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}
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var value = abruptCompletion.value();
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if (state === 'completed') { // step 3
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return CreateIterResultObject(value, true); // steps 3.a-b
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}
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if (state !== 'suspendedYield') {
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throw new $TypeError('Assertion failed: generator state is unexpected: ' + state); // step 4
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}
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if (abruptCompletion.type() === 'return') {
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// due to representing `GeneratorContext` as a function, we can't safely re-invoke it, so we can't support sending it a return completion
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return CreateIterResultObject(SLOT.get(generator, '[[CloseIfAbrupt]]')(NormalCompletion(abruptCompletion.value())), true);
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}
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var genContext = SLOT.get(generator, '[[GeneratorContext]]'); // step 5
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SLOT.set(generator, '[[GeneratorState]]', 'executing'); // step 8
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var result = genContext(value); // steps 6-7, 8-11
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return result; // step 12
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};
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