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refactor(struct): performance optimization

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Simon Chan 2022-05-15 13:48:25 +08:00
parent 7d5445aeae
commit 30faaa1438
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42 changed files with 2765 additions and 2587 deletions
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56
libraries/struct/src/struct.ts
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@ -1,6 +1,4 @@
// cspell: ignore Syncbird
import type { StructAsyncDeserializeStream, StructDeserializeStream, StructFieldDefinition, StructFieldValue, StructOptions } from './basic/index.js';
import { StructAsyncDeserializeStream, StructDeserializeStream, StructFieldDefinition, StructFieldValue, StructOptions, STRUCT_VALUE_SYMBOL } from './basic/index.js';
import { StructDefaultOptions, StructValue } from './basic/index.js';
import { SyncPromise } from "./sync-promise.js";
import { BigIntFieldDefinition, BigIntFieldType, BufferFieldSubType, FixedLengthBufferLikeFieldDefinition, NumberFieldDefinition, NumberFieldType, StringBufferFieldSubType, Uint8ArrayBufferFieldSubType, VariableLengthBufferLikeFieldDefinition, type FixedLengthBufferLikeFieldOptions, type LengthField, type VariableLengthBufferLikeFieldOptions } from './types/index.js';
@ -542,21 +540,25 @@ export class Struct<
public deserialize(
stream: StructDeserializeStream | StructAsyncDeserializeStream,
): ValueOrPromise<StructDeserializedResult<TFields, TExtra, TPostDeserialized>> {
const value = new StructValue();
Object.defineProperties(value.value, this._extra);
const structValue = new StructValue();
Object.defineProperties(structValue.value, this._extra);
return SyncPromise
.each(this._fields, ([name, definition]) => {
return SyncPromise
.try(() => {
return definition.deserialize(this.options, stream as any, value);
})
.then(fieldValue => {
value.set(name, fieldValue);
});
.try(() => {
let result = SyncPromise.resolve();
for (const [name, definition] of this._fields) {
result = result
.then(() =>
definition.deserialize(this.options, stream as any, structValue)
)
.then(fieldValue => {
structValue.set(name, fieldValue);
});
}
return result;
})
.then(() => {
const object = value.value;
const object = structValue.value;
// Run `postDeserialized`
if (this._postDeserialized) {
@ -576,18 +578,32 @@ export class Struct<
public serialize(init: Evaluate<Omit<TFields, TOmitInitKey>>): Uint8Array;
public serialize(init: Evaluate<Omit<TFields, TOmitInitKey>>, output: Uint8Array): number;
public serialize(init: Evaluate<Omit<TFields, TOmitInitKey>>, output?: Uint8Array): Uint8Array | number {
const value = new StructValue();
for (const [name, definition] of this._fields) {
const fieldValue = definition.create(this.options, value, (init as any)[name]);
value.set(name, fieldValue);
let structValue: StructValue;
if (STRUCT_VALUE_SYMBOL in init) {
structValue = (init as any)[STRUCT_VALUE_SYMBOL];
for (const [key, value] of Object.entries(init)) {
const fieldValue = structValue.get(key);
if (fieldValue) {
fieldValue.set(value);
}
}
} else {
structValue = new StructValue();
for (const [name, definition] of this._fields) {
const fieldValue = definition.create(
this.options,
structValue,
(init as any)[name]
);
structValue.set(name, fieldValue);
}
}
let structSize = 0;
const fieldsInfo: { fieldValue: StructFieldValue, size: number; }[] = [];
for (const [name] of this._fields) {
const fieldValue = value.get(name);
const fieldValue = structValue.get(name);
const size = fieldValue.getSize();
fieldsInfo.push({ fieldValue, size });
structSize += size;