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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | 15x 15x 15x 15x 41x 41x 41805x 41805x 851305x 851305x 851305x 851261x 407820x 203682x 4004x 204138x 201262x 443441x 441233x 1952x 1944x 853x 8x 5x 439281x 2208x 397x 1811x 1623x 25x 3x 16x 2x 140x 2x 4146x 4146x 278509x 278509x 278508x 4145x 410253x 410253x 410253x 404752x 404752x 404752x 404752x 5501x 5493x 5493x 5175x 5175x 5175x 326x 326x 318x 8x 2894x 267937x 2894x 14x 14x 14x 14x 14x 14x | import {Reader} from '@jsonjoy.com/buffers/lib/Reader';
import sharedCachedUtf8Decoder from '@jsonjoy.com/buffers/lib/utf8/sharedCachedUtf8Decoder';
import {JsonPackExtension} from '../JsonPackExtension';
import {ERROR} from '../cbor/constants';
import type {BinaryJsonDecoder, PackValue} from '../types';
import type {CachedUtf8Decoder} from '@jsonjoy.com/buffers/lib/utf8/CachedUtf8Decoder';
/**
* @category Decoder
*/
export class MsgPackDecoderFast<R extends Reader> implements BinaryJsonDecoder {
public constructor(
public reader: R = new Reader() as R,
protected readonly keyDecoder: CachedUtf8Decoder = sharedCachedUtf8Decoder,
) {}
/** @deprecated */
public decode(uint8: Uint8Array): unknown {
this.reader.reset(uint8);
return this.readAny();
}
public read(uint8: Uint8Array): PackValue {
this.reader.reset(uint8);
return this.readAny() as PackValue;
}
public val(): unknown {
return this.readAny();
}
public readAny(): unknown {
const reader = this.reader;
const byte = reader.u8();
if (byte >= 0xe0) return byte - 0x100; // 0xe0
if (byte <= 0xbf) {
if (byte < 0x90) {
if (byte <= 0b1111111) return byte; // 0x7f
return this.obj(byte & 0b1111); // 0x80
} else {
if (byte < 0xa0) return this.arr(byte & 0b1111);
// 0x90
else return reader.utf8(byte & 0b11111); // 0xa0
}
}
if (byte <= 0xd0) {
if (byte <= 0xc8) {
if (byte <= 0xc4) {
if (byte <= 0xc2) return byte === 0xc2 ? false : byte === 0xc0 ? null : undefined;
else return byte === 0xc4 ? reader.buf(reader.u8()) : true;
} else {
if (byte <= 0xc6) return byte === 0xc6 ? reader.buf(reader.u32()) : reader.buf(reader.u16());
else return byte === 0xc8 ? this.ext(reader.u16()) : this.ext(reader.u8());
}
} else {
return byte <= 0xcc
? byte <= 0xca
? byte === 0xca
? reader.f32()
: this.ext(reader.u32())
: byte === 0xcc
? reader.u8()
: reader.f64()
: byte <= 0xce
? byte === 0xce
? reader.u32()
: reader.u16()
: byte === 0xd0
? reader.i8()
: reader.u32() * 4294967296 + reader.u32();
}
} else if (byte <= 0xd8) {
return byte <= 0xd4
? byte <= 0xd2
? byte === 0xd2
? reader.i32()
: reader.i16()
: byte === 0xd4
? this.ext(1)
: reader.i32() * 4294967296 + reader.u32()
: byte <= 0xd6
? byte === 0xd6
? this.ext(4)
: this.ext(2)
: byte === 0xd8
? this.ext(16)
: this.ext(8);
} else {
switch (byte) {
case 0xd9:
return reader.utf8(reader.u8());
case 0xda:
return reader.utf8(reader.u16());
case 0xdb:
return reader.utf8(reader.u32());
case 0xdc:
return this.arr(reader.u16());
case 0xdd:
return this.arr(reader.u32());
case 0xde:
return this.obj(reader.u16());
case 0xdf:
return this.obj(reader.u32());
}
}
return undefined;
}
public str(): unknown {
const reader = this.reader;
const byte = reader.u8();
if (byte >> 5 === 0b101) return reader.utf8(byte & 0b11111);
switch (byte) {
case 0xd9:
return reader.utf8(reader.u8());
case 0xda:
return reader.utf8(reader.u16());
case 0xdb:
return reader.utf8(reader.u32());
}
return undefined;
}
/** @ignore */
protected obj(size: number): object {
const obj: Record<string, unknown> = {};
for (let i = 0; i < size; i++) {
const key = this.key();
if (key === '__proto__') throw ERROR.UNEXPECTED_OBJ_KEY;
obj[key] = this.readAny();
}
return obj;
}
/** @ignore */
protected key(): string {
const reader = this.reader;
const byte = reader.view.getUint8(reader.x);
if (byte >= 0b10100000 && byte <= 0b10111111) {
const size = byte & 0b11111;
const key = this.keyDecoder.decode(reader.uint8, reader.x + 1, size);
reader.x += 1 + size;
return key;
} else if (byte === 0xd9) {
const size = reader.view.getUint8(reader.x + 1);
if (size < 32) {
const key = this.keyDecoder.decode(reader.uint8, reader.x + 2, size);
reader.x += 2 + size;
return key;
}
}
reader.x++;
switch (byte) {
case 0xd9:
return reader.utf8(reader.u8());
case 0xda:
return reader.utf8(reader.u16());
case 0xdb:
return reader.utf8(reader.u32());
default:
return '';
}
}
/** @ignore */
protected arr(size: number): unknown[] {
const arr: unknown[] = [];
for (let i = 0; i < size; i++) arr.push(this.readAny());
return arr;
}
/** @ignore */
protected ext(size: number): JsonPackExtension {
const reader = this.reader;
const type = reader.u8();
const end = reader.x + size;
const buf = reader.uint8.subarray(reader.x, end);
reader.x = end;
return new JsonPackExtension(type, buf);
}
protected back(bytes: number) {
this.reader.x -= bytes;
}
}
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