source: frontend/node_modules/es-abstract/2015/CompletionRecord.js

'use strict';

var $SyntaxError = require('es-errors/syntax');

var SLOT = require('internal-slot');

// https://262.ecma-international.org/6.0/#sec-completion-record-specification-type

var CompletionRecord = function CompletionRecord(type, value) {
        if (!(this instanceof CompletionRecord)) {
                return new CompletionRecord(type, value);
        }
        if (type !== 'normal' && type !== 'break' && type !== 'continue' && type !== 'return' && type !== 'throw') {
                throw new $SyntaxError('Assertion failed: `type` must be one of "normal", "break", "continue", "return", or "throw"');
        }
        SLOT.set(this, '[[type]]', type);
        SLOT.set(this, '[[value]]', value);
        // [[target]] slot?
};

CompletionRecord.prototype.type = function type() {
        return SLOT.get(this, '[[type]]');
};

CompletionRecord.prototype.value = function value() {
        return SLOT.get(this, '[[value]]');
};

CompletionRecord.prototype['?'] = function ReturnIfAbrupt() {
        var type = SLOT.get(this, '[[type]]');
        var value = SLOT.get(this, '[[value]]');

        if (type === 'throw') {
                throw value;
        }
        return value;
};

CompletionRecord.prototype['!'] = function assert() {
        var type = SLOT.get(this, '[[type]]');

        if (type !== 'normal') {
                throw new $SyntaxError('Assertion failed: Completion Record is not of type "normal"');
        }
        return SLOT.get(this, '[[value]]');
};

module.exports = CompletionRecord;