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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 | 6x 6x 2584x 2584x 2580x 6x 5380x 5380x 5372x 6x 2945x 2945x 2924x 2160x 1716x 1690x 1679x 1674x 1619x 2887x 6x 2588x 2588x 2588x 2588x 2059x 1669x 1660x 1650x 1645x 1585x 2526x 6x 20548x 20548x 20501x 6x 80284x 4695x 6x 68820x 68820x 68776x 6x 10x 10x 1x 6x 7958x 7958x 7958x 6712x 65541x 6712x 7927x 6x 10662x 10662x 10662x 9635x 9635x 51619x 9635x 8625x 6x 2035x 2035x 2035x 2035x 2035x 2035x 2035x 2035x 6x 6x 119460x 116876x 108918x 108908x 5380x 26081x 20548x 68820x 8627x 8627x 49584x 49584x 8627x | import {utf8Size} from '@jsonjoy.com/util/lib/strings/utf8';
import type {Import} from './Import';
export interface AstNode<T> {
/** Node value as JS value. */
readonly val: T;
/** Node representation length. */
readonly len: number;
/** Total length of the node. */
byteLength(): number;
}
export class NullAstNode implements AstNode<null> {
public readonly val = null;
public readonly len = 1;
public byteLength(): number {
return 1;
}
}
export class BoolAstNode implements AstNode<boolean> {
public readonly len = 1;
constructor(public readonly val: boolean) {}
public byteLength(): number {
return 1;
}
}
export class UintAstNode implements AstNode<number> {
public readonly len: number;
constructor(public readonly val: number) {
if (!val) this.len = 0;
else if (val <= 0xff) this.len = 1;
else if (val <= 0xffff) this.len = 2;
else if (val <= 0xffffff) this.len = 3;
else if (val <= 0xffffffff) this.len = 4;
else if (val <= 0xffffffffff) this.len = 5;
else if (val <= 0xffffffffffff) this.len = 6;
else this.len = 7;
}
public byteLength(): number {
return 1 + this.len;
}
}
export class NintAstNode implements AstNode<number> {
public readonly len: number;
constructor(public readonly val: number) {
const uint = -val;
Iif (!uint) this.len = 0;
else if (uint <= 0xff) this.len = 1;
else if (uint <= 0xffff) this.len = 2;
else if (uint <= 0xffffff) this.len = 3;
else if (uint <= 0xffffffff) this.len = 4;
else if (uint <= 0xffffffffff) this.len = 5;
else if (uint <= 0xffffffffffff) this.len = 6;
else this.len = 7;
}
public byteLength(): number {
return 1 + this.len;
}
}
export class FloatAstNode implements AstNode<number> {
public readonly len: number = 8;
constructor(public readonly val: number) {}
public byteLength(): number {
return 1 + this.len;
}
}
const vUintLen = (num: number): number => {
if (num <= 0b1111111) return 1;
else if (num <= 0b1111111_1111111) return 2;
else Eif (num <= 0b1111111_1111111_1111111) return 3;
else if (num <= 0b1111111_1111111_1111111_1111111) return 4;
else if (num <= 0b1111111_1111111_1111111_1111111_1111111) return 5;
else return 6;
};
export class StrAstNode implements AstNode<string> {
public readonly len: number;
constructor(public readonly val: string) {
this.len = utf8Size(val);
}
public byteLength(): number {
return this.len < 14 ? 1 + this.len : 1 + vUintLen(this.len) + this.len;
}
}
export class BinAstNode implements AstNode<Uint8Array> {
public readonly len: number;
constructor(public readonly val: Uint8Array) {
this.len = val.length;
}
public byteLength(): number {
return this.len < 14 ? 1 + this.len : 1 + vUintLen(this.len) + this.len;
}
}
export class ArrAstNode implements AstNode<AstNode<unknown>[] | null> {
public readonly len: number;
constructor(public readonly val: AstNode<unknown>[] | null) {
Iif (val === null) {
this.len = 1;
} else {
if (!val.length) this.len = 0;
else {
let elementLength = 0;
for (let i = 0; i < val.length; i++) elementLength += val[i].byteLength();
this.len = elementLength;
}
}
}
public byteLength(): number {
return this.len < 14 ? 1 + this.len : 1 + vUintLen(this.len) + this.len;
}
}
export class ObjAstNode implements AstNode<Map<number, AstNode<unknown>> | null> {
public readonly len: number;
constructor(public readonly val: Map<number, AstNode<unknown>> | null) {
Iif (val === null) {
this.len = 1;
} else {
if (!val.size) this.len = 0;
else {
let len = 0;
val.forEach((node, symbolId) => {
len += vUintLen(symbolId) + node.byteLength();
});
this.len = len;
}
}
}
public byteLength(): number {
return this.len < 14 ? 1 + this.len : 1 + vUintLen(this.len) + this.len;
}
}
export class AnnotationAstNode implements AstNode<AstNode<unknown>> {
public readonly len: number;
public readonly annotationLen: number;
constructor(
public readonly val: AstNode<unknown>,
public readonly annotations: number[],
) {
let len = 0;
for (let i = 0; i < annotations.length; i++) len += vUintLen(annotations[i]);
this.annotationLen = len;
len += vUintLen(len);
len += val.byteLength();
this.len = len;
}
public byteLength(): number {
return this.len < 14 ? 1 + this.len : 1 + vUintLen(this.len) + this.len;
}
}
const isSafeInteger = Number.isSafeInteger;
export const toAst = (val: unknown, symbols: Import): AstNode<unknown> => {
if (val === null) return new NullAstNode();
if (val instanceof Array) return new ArrAstNode(val.map((el) => toAst(el, symbols)));
if (val instanceof Uint8Array) return new BinAstNode(val);
switch (typeof val) {
case 'boolean':
return new BoolAstNode(val);
case 'number': {
if (isSafeInteger(val)) return val >= 0 ? new UintAstNode(val) : new NintAstNode(val);
else return new FloatAstNode(val);
}
case 'string':
return new StrAstNode(val);
case 'object': {
const struct = new Map<number, AstNode<unknown>>();
for (const key in val) {
const symbolId = symbols.add(key);
struct.set(symbolId, toAst((val as any)[key], symbols));
}
return new ObjAstNode(struct);
}
}
throw new Error('UNKNOWN_TYPE');
};
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