49 lines
1.9 KiB
Plaintext
49 lines
1.9 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.reflectionCreate = void 0;
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const reflection_scalar_default_1 = require("./reflection-scalar-default");
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const message_type_contract_1 = require("./message-type-contract");
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/**
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* Creates an instance of the generic message, using the field
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* information.
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*/
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function reflectionCreate(type) {
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/**
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* This ternary can be removed in the next major version.
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* The `Object.create()` code path utilizes a new `messagePrototype`
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* property on the `IMessageType` which has this same `MESSAGE_TYPE`
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* non-enumerable property on it. Doing it this way means that we only
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* pay the cost of `Object.defineProperty()` once per `IMessageType`
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* class of once per "instance". The falsy code path is only provided
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* for backwards compatibility in cases where the runtime library is
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* updated without also updating the generated code.
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*/
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const msg = type.messagePrototype
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? Object.create(type.messagePrototype)
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: Object.defineProperty({}, message_type_contract_1.MESSAGE_TYPE, { value: type });
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for (let field of type.fields) {
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let name = field.localName;
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if (field.opt)
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continue;
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if (field.oneof)
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msg[field.oneof] = { oneofKind: undefined };
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else if (field.repeat)
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msg[name] = [];
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else
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switch (field.kind) {
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case "scalar":
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msg[name] = reflection_scalar_default_1.reflectionScalarDefault(field.T, field.L);
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break;
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case "enum":
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// we require 0 to be default value for all enums
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msg[name] = 0;
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break;
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case "map":
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msg[name] = {};
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break;
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}
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}
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return msg;
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}
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exports.reflectionCreate = reflectionCreate;
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