forked from FoundKeyGang/FoundKey
543 lines
16 KiB
TypeScript
543 lines
16 KiB
TypeScript
/**
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* AiScript
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* evaluator & type checker
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*/
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import autobind from 'autobind-decorator';
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import * as seedrandom from 'seedrandom';
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import {
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faSuperscript,
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faAlignLeft,
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faShareAlt,
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faSquareRootAlt,
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faPlus,
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faMinus,
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faTimes,
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faDivide,
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faList,
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faQuoteRight,
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faEquals,
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faGreaterThan,
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faLessThan,
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faGreaterThanEqual,
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faLessThanEqual,
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faExclamation,
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faNotEqual,
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faDice,
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faSortNumericUp,
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faExchangeAlt,
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faRecycle,
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} from '@fortawesome/free-solid-svg-icons';
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import { faFlag } from '@fortawesome/free-regular-svg-icons';
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import { version } from '../../config';
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export type Block<V = any> = {
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id: string;
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type: string;
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args: Block[];
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value: V;
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};
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type FnBlock = Block<{
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slots: {
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name: string;
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type: Type;
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}[];
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expression: Block;
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}>;
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export type Variable = Block & {
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name: string;
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};
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type Type = 'string' | 'number' | 'boolean' | 'stringArray';
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type TypeError = {
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arg: number;
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expect: Type;
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actual: Type;
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};
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const funcDefs = {
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if: { in: ['boolean', 0, 0], out: 0, category: 'flow', icon: faShareAlt, },
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for: { in: ['number', 'function'], out: null, category: 'flow', icon: faRecycle, },
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not: { in: ['boolean'], out: 'boolean', category: 'logical', icon: faFlag, },
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or: { in: ['boolean', 'boolean'], out: 'boolean', category: 'logical', icon: faFlag, },
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and: { in: ['boolean', 'boolean'], out: 'boolean', category: 'logical', icon: faFlag, },
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add: { in: ['number', 'number'], out: 'number', category: 'operation', icon: faPlus, },
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subtract: { in: ['number', 'number'], out: 'number', category: 'operation', icon: faMinus, },
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multiply: { in: ['number', 'number'], out: 'number', category: 'operation', icon: faTimes, },
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divide: { in: ['number', 'number'], out: 'number', category: 'operation', icon: faDivide, },
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eq: { in: [0, 0], out: 'boolean', category: 'comparison', icon: faEquals, },
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notEq: { in: [0, 0], out: 'boolean', category: 'comparison', icon: faNotEqual, },
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gt: { in: ['number', 'number'], out: 'boolean', category: 'comparison', icon: faGreaterThan, },
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lt: { in: ['number', 'number'], out: 'boolean', category: 'comparison', icon: faLessThan, },
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gtEq: { in: ['number', 'number'], out: 'boolean', category: 'comparison', icon: faGreaterThanEqual, },
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ltEq: { in: ['number', 'number'], out: 'boolean', category: 'comparison', icon: faLessThanEqual, },
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strLen: { in: ['string'], out: 'number', category: 'text', icon: faQuoteRight, },
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strPick: { in: ['string', 'number'], out: 'string', category: 'text', icon: faQuoteRight, },
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strReplace: { in: ['string', 'string', 'string'], out: 'string', category: 'text', icon: faQuoteRight, },
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strReverse: { in: ['string'], out: 'string', category: 'text', icon: faQuoteRight, },
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strConcat: { in: ['string', 'string'], out: 'string', category: 'text', icon: faQuoteRight, },
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join: { in: ['stringArray', 'string'], out: 'string', category: 'text', icon: faQuoteRight, },
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stringToNumber: { in: ['string'], out: 'number', category: 'convert', icon: faExchangeAlt, },
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numberToString: { in: ['number'], out: 'string', category: 'convert', icon: faExchangeAlt, },
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rannum: { in: ['number', 'number'], out: 'number', category: 'random', icon: faDice, },
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dailyRannum: { in: ['number', 'number'], out: 'number', category: 'random', icon: faDice, },
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seedRannum: { in: [null, 'number', 'number'], out: 'number', category: 'random', icon: faDice, },
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random: { in: ['number'], out: 'boolean', category: 'random', icon: faDice, },
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dailyRandom: { in: ['number'], out: 'boolean', category: 'random', icon: faDice, },
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seedRandom: { in: [null, 'number'], out: 'boolean', category: 'random', icon: faDice, },
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randomPick: { in: [0], out: 0, category: 'random', icon: faDice, },
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dailyRandomPick: { in: [0], out: 0, category: 'random', icon: faDice, },
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seedRandomPick: { in: [null, 0], out: 0, category: 'random', icon: faDice, },
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};
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const literalDefs = {
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text: { out: 'string', category: 'value', icon: faQuoteRight, },
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multiLineText: { out: 'string', category: 'value', icon: faAlignLeft, },
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textList: { out: 'stringArray', category: 'value', icon: faList, },
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number: { out: 'number', category: 'value', icon: faSortNumericUp, },
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ref: { out: null, category: 'value', icon: faSuperscript, },
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fn: { out: 'function', category: 'value', icon: faSuperscript, },
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};
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const blockDefs = [
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...Object.entries(literalDefs).map(([k, v]) => ({
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type: k, out: v.out, category: v.category, icon: v.icon
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})),
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...Object.entries(funcDefs).map(([k, v]) => ({
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type: k, out: v.out, category: v.category, icon: v.icon
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}))
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];
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function isFnBlock(block: Block): block is FnBlock {
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return block.type === 'fn';
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}
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type PageVar = { name: string; value: any; type: Type; };
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const envVarsDef = {
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AI: 'string',
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URL: 'string',
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VERSION: 'string',
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LOGIN: 'boolean',
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NAME: 'string',
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USERNAME: 'string',
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USERID: 'string',
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NOTES_COUNT: 'number',
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FOLLOWERS_COUNT: 'number',
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FOLLOWING_COUNT: 'number',
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IS_CAT: 'boolean',
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MY_NOTES_COUNT: 'number',
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MY_FOLLOWERS_COUNT: 'number',
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MY_FOLLOWING_COUNT: 'number',
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SEED: null,
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YMD: 'string',
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};
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class AiScriptError extends Error {
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public info?: any;
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constructor(message: string, info?: any) {
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super(message);
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this.info = info;
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// Maintains proper stack trace for where our error was thrown (only available on V8)
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if (Error.captureStackTrace) {
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Error.captureStackTrace(this, AiScriptError);
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}
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}
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}
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class Scope {
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private layerdStates: Record<string, any>[];
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public name: string;
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constructor(layerdStates: Scope['layerdStates'], name?: Scope['name']) {
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this.layerdStates = layerdStates;
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this.name = name || 'anonymous';
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}
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@autobind
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public createChildScope(states: Record<string, any>, name?: Scope['name']): Scope {
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const layer = [states, ...this.layerdStates];
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return new Scope(layer, name);
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}
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/**
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* 指定した名前の変数の値を取得します
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* @param name 変数名
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*/
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@autobind
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public getState(name: string): any {
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for (const later of this.layerdStates) {
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const state = later[name];
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if (state !== undefined) {
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return state;
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}
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}
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throw new AiScriptError(
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`No such variable '${name}' in scope '${this.name}'`, {
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scope: this.layerdStates
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});
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}
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}
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export class AiScript {
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private variables: Variable[];
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private pageVars: PageVar[];
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private envVars: Record<keyof typeof envVarsDef, any>;
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public static envVarsDef = envVarsDef;
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public static blockDefs = blockDefs;
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public static funcDefs = funcDefs;
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private opts: {
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randomSeed?: string; user?: any; visitor?: any; page?: any; url?: string;
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};
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constructor(variables: Variable[] = [], pageVars: PageVar[] = [], opts: AiScript['opts'] = {}) {
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this.variables = variables;
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this.pageVars = pageVars;
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this.opts = opts;
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const date = new Date();
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this.envVars = {
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AI: 'kawaii',
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VERSION: version,
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URL: opts.page ? `${opts.url}/@${opts.page.user.username}/pages/${opts.page.name}` : '',
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LOGIN: opts.visitor != null,
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NAME: opts.visitor ? opts.visitor.name : '',
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USERNAME: opts.visitor ? opts.visitor.username : '',
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USERID: opts.visitor ? opts.visitor.id : '',
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NOTES_COUNT: opts.visitor ? opts.visitor.notesCount : 0,
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FOLLOWERS_COUNT: opts.visitor ? opts.visitor.followersCount : 0,
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FOLLOWING_COUNT: opts.visitor ? opts.visitor.followingCount : 0,
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IS_CAT: opts.visitor ? opts.visitor.isCat : false,
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MY_NOTES_COUNT: opts.user ? opts.user.notesCount : 0,
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MY_FOLLOWERS_COUNT: opts.user ? opts.user.followersCount : 0,
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MY_FOLLOWING_COUNT: opts.user ? opts.user.followingCount : 0,
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SEED: opts.randomSeed ? opts.randomSeed : '',
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YMD: `${date.getFullYear()}/${date.getMonth() + 1}/${date.getDate()}`
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};
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}
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@autobind
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public injectVars(vars: Variable[]) {
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this.variables = vars;
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}
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@autobind
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public injectPageVars(pageVars: PageVar[]) {
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this.pageVars = pageVars;
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}
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@autobind
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public updatePageVar(name: string, value: any) {
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this.pageVars.find(v => v.name === name).value = value;
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}
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@autobind
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public updateRandomSeed(seed: string) {
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this.opts.randomSeed = seed;
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this.envVars.SEED = seed;
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}
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@autobind
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public static isLiteralBlock(v: Block) {
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if (v.type === null) return true;
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if (literalDefs[v.type]) return true;
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return false;
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}
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@autobind
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public typeCheck(v: Block): TypeError | null {
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if (AiScript.isLiteralBlock(v)) return null;
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const def = AiScript.funcDefs[v.type];
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if (def == null) {
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throw new Error('Unknown type: ' + v.type);
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}
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const generic: Type[] = [];
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for (let i = 0; i < def.in.length; i++) {
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const arg = def.in[i];
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const type = this.typeInference(v.args[i]);
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if (type === null) continue;
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if (typeof arg === 'number') {
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if (generic[arg] === undefined) {
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generic[arg] = type;
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} else if (type !== generic[arg]) {
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return {
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arg: i,
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expect: generic[arg],
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actual: type
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};
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}
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} else if (type !== arg) {
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return {
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arg: i,
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expect: arg,
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actual: type
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};
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}
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}
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return null;
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}
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@autobind
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public getExpectedType(v: Block, slot: number): Type | null {
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const def = AiScript.funcDefs[v.type];
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if (def == null) {
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throw new Error('Unknown type: ' + v.type);
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}
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const generic: Type[] = [];
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for (let i = 0; i < def.in.length; i++) {
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const arg = def.in[i];
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const type = this.typeInference(v.args[i]);
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if (type === null) continue;
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if (typeof arg === 'number') {
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if (generic[arg] === undefined) {
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generic[arg] = type;
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}
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}
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}
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if (typeof def.in[slot] === 'number') {
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return generic[def.in[slot]] || null;
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} else {
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return def.in[slot];
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}
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}
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@autobind
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public typeInference(v: Block): Type | null {
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if (v.type === null) return null;
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if (v.type === 'text') return 'string';
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if (v.type === 'multiLineText') return 'string';
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if (v.type === 'textList') return 'stringArray';
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if (v.type === 'number') return 'number';
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if (v.type === 'ref') {
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const variable = this.variables.find(va => va.name === v.value);
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if (variable) {
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return this.typeInference(variable);
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}
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const pageVar = this.pageVars.find(va => va.name === v.value);
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if (pageVar) {
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return pageVar.type;
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}
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const envVar = AiScript.envVarsDef[v.value];
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if (envVar !== undefined) {
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return envVar;
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}
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return null;
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}
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if (v.type === 'fn') return null; // todo
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if (v.type.startsWith('fn:')) return null; // todo
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const generic: Type[] = [];
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const def = AiScript.funcDefs[v.type];
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for (let i = 0; i < def.in.length; i++) {
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const arg = def.in[i];
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if (typeof arg === 'number') {
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const type = this.typeInference(v.args[i]);
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if (generic[arg] === undefined) {
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generic[arg] = type;
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} else {
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if (type !== generic[arg]) {
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generic[arg] = null;
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}
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}
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}
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}
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if (typeof def.out === 'number') {
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return generic[def.out];
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} else {
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return def.out;
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}
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}
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@autobind
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public getVarsByType(type: Type | null): Variable[] {
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if (type == null) return this.variables;
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return this.variables.filter(x => (this.typeInference(x) === null) || (this.typeInference(x) === type));
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}
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@autobind
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public getVarByName(name: string): Variable {
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return this.variables.find(x => x.name === name);
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}
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@autobind
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public getEnvVarsByType(type: Type | null): string[] {
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if (type == null) return Object.keys(AiScript.envVarsDef);
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return Object.entries(AiScript.envVarsDef).filter(([k, v]) => v === null || type === v).map(([k, v]) => k);
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}
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@autobind
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public getPageVarsByType(type: Type | null): string[] {
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if (type == null) return this.pageVars.map(v => v.name);
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return this.pageVars.filter(v => type === v.type).map(v => v.name);
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}
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@autobind
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private interpolate(str: string, scope: Scope) {
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return str.replace(/\{(.+?)\}/g, match => {
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const v = scope.getState(match.slice(1, -1).trim());
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return v == null ? 'NULL' : v.toString();
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});
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}
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@autobind
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public evaluateVars(): Record<string, any> {
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const values: Record<string, any> = {};
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for (const [k, v] of Object.entries(this.envVars)) {
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values[k] = v;
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}
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for (const v of this.pageVars) {
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values[v.name] = v.value;
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}
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for (const v of this.variables) {
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values[v.name] = this.evaluate(v, new Scope([values]));
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}
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return values;
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}
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@autobind
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private evaluate(block: Block, scope: Scope): any {
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if (block.type === null) {
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return null;
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}
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if (block.type === 'number') {
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return parseInt(block.value, 10);
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}
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if (block.type === 'text' || block.type === 'multiLineText') {
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return this.interpolate(block.value || '', scope);
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}
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if (block.type === 'textList') {
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return block.value.trim().split('\n');
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}
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if (block.type === 'ref') {
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return scope.getState(block.value);
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}
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if (isFnBlock(block)) { // ユーザー関数定義
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return {
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slots: block.value.slots.map(x => x.name),
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exec: slotArg => {
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return this.evaluate(block.value.expression, scope.createChildScope(slotArg, block.id));
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}
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};
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}
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if (block.type.startsWith('fn:')) { // ユーザー関数呼び出し
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const fnName = block.type.split(':')[1];
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const fn = scope.getState(fnName);
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const args = {};
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for (let i = 0; i < fn.slots.length; i++) {
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const name = fn.slots[i];
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args[name] = this.evaluate(block.args[i], scope);
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}
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return fn.exec(args);
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}
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if (block.args === undefined) return null;
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const date = new Date();
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const day = `${this.opts.visitor ? this.opts.visitor.id : ''} ${date.getFullYear()}/${date.getMonth() + 1}/${date.getDate()}`;
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const funcs: { [p in keyof typeof funcDefs]: any } = {
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not: (a) => !a,
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eq: (a, b) => a === b,
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notEq: (a, b) => a !== b,
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gt: (a, b) => a > b,
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lt: (a, b) => a < b,
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gtEq: (a, b) => a >= b,
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ltEq: (a, b) => a <= b,
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or: (a, b) => a || b,
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and: (a, b) => a && b,
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if: (bool, a, b) => bool ? a : b,
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for: (times, fn) => {
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const result = [];
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for (let i = 0; i < times; i++) {
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result.push(fn.exec({
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[fn.slots[0]]: i + 1
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}));
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}
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return result;
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},
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add: (a, b) => a + b,
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subtract: (a, b) => a - b,
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multiply: (a, b) => a * b,
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divide: (a, b) => a / b,
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strLen: (a) => a.length,
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|
strPick: (a, b) => a[b - 1],
|
|
strReplace: (a, b, c) => a.split(b).join(c),
|
|
strReverse: (a) => a.split('').reverse().join(''),
|
|
strConcat: (a, b) => a + b,
|
|
join: (texts, separator) => texts.join(separator || ''),
|
|
stringToNumber: (a) => parseInt(a),
|
|
numberToString: (a) => a.toString(),
|
|
random: (probability) => Math.floor(seedrandom(`${this.opts.randomSeed}:${block.id}`)() * 100) < probability,
|
|
rannum: (min, max) => min + Math.floor(seedrandom(`${this.opts.randomSeed}:${block.id}`)() * (max - min + 1)),
|
|
randomPick: (list) => list[Math.floor(seedrandom(`${this.opts.randomSeed}:${block.id}`)() * list.length)],
|
|
dailyRandom: (probability) => Math.floor(seedrandom(`${day}:${block.id}`)() * 100) < probability,
|
|
dailyRannum: (min, max) => min + Math.floor(seedrandom(`${day}:${block.id}`)() * (max - min + 1)),
|
|
dailyRandomPick: (list) => list[Math.floor(seedrandom(`${day}:${block.id}`)() * list.length)],
|
|
seedRandom: (seed, probability) => Math.floor(seedrandom(seed)() * 100) < probability,
|
|
seedRannum: (seed, min, max) => min + Math.floor(seedrandom(seed)() * (max - min + 1)),
|
|
seedRandomPick: (seed, list) => list[Math.floor(seedrandom(seed)() * list.length)],
|
|
};
|
|
|
|
const fnName = block.type;
|
|
const fn = funcs[fnName];
|
|
if (fn == null) {
|
|
throw new AiScriptError(`No such function '${fnName}'`);
|
|
} else {
|
|
return fn(...block.args.map(x => this.evaluate(x, scope)));
|
|
}
|
|
}
|
|
|
|
@autobind
|
|
public isUsedName(name: string) {
|
|
if (this.variables.some(v => v.name === name)) {
|
|
return true;
|
|
}
|
|
|
|
if (this.pageVars.some(v => v.name === name)) {
|
|
return true;
|
|
}
|
|
|
|
if (AiScript.envVarsDef[name]) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|