SillyTavern/public/scripts/slash-commands/SlashCommandClosure.js

293 lines
12 KiB
JavaScript

import { substituteParams } from '../../script.js';
import { delay, escapeRegex } from '../utils.js';
import { SlashCommand } from './SlashCommand.js';
import { SlashCommandAbortController } from './SlashCommandAbortController.js';
import { SlashCommandClosureExecutor } from './SlashCommandClosureExecutor.js';
import { SlashCommandClosureResult } from './SlashCommandClosureResult.js';
import { SlashCommandExecutor } from './SlashCommandExecutor.js';
import { SlashCommandNamedArgumentAssignment } from './SlashCommandNamedArgumentAssignment.js';
import { SlashCommandScope } from './SlashCommandScope.js';
export class SlashCommandClosure {
/**@type {SlashCommandScope}*/ scope;
/**@type {boolean}*/ executeNow = false;
// @ts-ignore
/**@type {SlashCommandNamedArgumentAssignment[]}*/ argumentList = [];
// @ts-ignore
/**@type {SlashCommandNamedArgumentAssignment[]}*/ providedArgumentList = [];
/**@type {SlashCommandExecutor[]}*/ executorList = [];
/**@type {SlashCommandAbortController}*/ abortController;
/**@type {(done:number, total:number)=>void}*/ onProgress;
/**@type {string}*/ rawText;
/**@type {number}*/
get commandCount() {
return this.executorList.map(executor=>executor.commandCount).reduce((sum,cur)=>sum + cur, 0);
}
constructor(parent) {
this.scope = new SlashCommandScope(parent);
}
toString() {
return '[Closure]';
}
/**
*
* @param {string} text
* @param {SlashCommandScope} scope
* @returns
*/
substituteParams(text, scope = null) {
let isList = false;
let listValues = [];
scope = scope ?? this.scope;
const macros = scope.macroList.map(it=>escapeRegex(it.key)).join('|');
const re = new RegExp(`({{pipe}})|(?:{{var::([^\\s]+?)(?:::((?!}}).+))?}})|(?:{{(${macros})}})`);
let done = '';
let remaining = text;
while (re.test(remaining)) {
const match = re.exec(remaining);
const before = substituteParams(remaining.slice(0, match.index));
const after = remaining.slice(match.index + match[0].length);
const replacer = match[1] ? scope.pipe : match[2] ? scope.getVariable(match[2], match[3]) : scope.macroList.find(it=>it.key == match[4])?.value;
if (replacer instanceof SlashCommandClosure) {
isList = true;
if (match.index > 0) {
listValues.push(before);
}
listValues.push(replacer);
if (match.index + match[0].length + 1 < remaining.length) {
const rest = this.substituteParams(after, scope);
listValues.push(...(Array.isArray(rest) ? rest : [rest]));
}
break;
} else {
done = `${done}${before}${replacer}`;
remaining = after;
}
}
if (!isList) {
text = `${done}${substituteParams(remaining)}`;
}
if (isList) {
if (listValues.length > 1) return listValues;
return listValues[0];
}
return text;
}
getCopy() {
const closure = new SlashCommandClosure();
closure.scope = this.scope.getCopy();
closure.executeNow = this.executeNow;
closure.argumentList = this.argumentList;
closure.providedArgumentList = this.providedArgumentList;
closure.executorList = this.executorList;
closure.abortController = this.abortController;
closure.onProgress = this.onProgress;
return closure;
}
/**
*
* @returns {Promise<SlashCommandClosureResult>}
*/
async execute() {
const closure = this.getCopy();
return await closure.executeDirect();
}
async executeDirect() {
// closure arguments
for (const arg of this.argumentList) {
let v = arg.value;
if (v instanceof SlashCommandClosure) {
/**@type {SlashCommandClosure}*/
const closure = v;
closure.scope.parent = this.scope;
if (closure.executeNow) {
v = (await closure.execute())?.pipe;
} else {
v = closure;
}
} else {
v = this.substituteParams(v);
}
// unescape value
if (typeof v == 'string') {
v = v
?.replace(/\\\{/g, '{')
?.replace(/\\\}/g, '}')
;
}
this.scope.letVariable(arg.name, v);
}
for (const arg of this.providedArgumentList) {
let v = arg.value;
if (v instanceof SlashCommandClosure) {
/**@type {SlashCommandClosure}*/
const closure = v;
closure.scope.parent = this.scope;
if (closure.executeNow) {
v = (await closure.execute())?.pipe;
} else {
v = closure;
}
} else {
v = this.substituteParams(v, this.scope.parent);
}
// unescape value
if (typeof v == 'string') {
v = v
?.replace(/\\\{/g, '{')
?.replace(/\\\}/g, '}')
;
}
this.scope.setVariable(arg.name, v);
}
let done = 0;
if (this.executorList.length == 0) {
this.scope.pipe = '';
}
for (const executor of this.executorList) {
this.onProgress?.(done, this.commandCount);
if (executor instanceof SlashCommandClosureExecutor) {
const closure = this.scope.getVariable(executor.name);
if (!closure || !(closure instanceof SlashCommandClosure)) throw new Error(`${executor.name} is not a closure.`);
closure.scope.parent = this.scope;
closure.providedArgumentList = executor.providedArgumentList;
const result = await closure.execute();
this.scope.pipe = result.pipe;
} else {
/**@type {import('./SlashCommand.js').NamedArguments} */
let args = {
_scope: this.scope,
_parserFlags: executor.parserFlags,
_abortController: this.abortController,
_hasUnnamedArgument: executor.unnamedArgumentList.length > 0,
};
let value;
// substitute named arguments
for (const arg of executor.namedArgumentList) {
if (arg.value instanceof SlashCommandClosure) {
/**@type {SlashCommandClosure}*/
const closure = arg.value;
closure.scope.parent = this.scope;
if (closure.executeNow) {
args[arg.name] = (await closure.execute())?.pipe;
} else {
args[arg.name] = closure;
}
} else {
args[arg.name] = this.substituteParams(arg.value);
}
// unescape named argument
if (typeof args[arg.name] == 'string') {
args[arg.name] = args[arg.name]
?.replace(/\\\{/g, '{')
?.replace(/\\\}/g, '}')
;
}
}
// substitute unnamed argument
if (executor.unnamedArgumentList.length == 0) {
if (executor.injectPipe) {
value = this.scope.pipe;
args._hasUnnamedArgument = this.scope.pipe !== null && this.scope.pipe !== undefined;
}
} else {
value = [];
for (let i = 0; i < executor.unnamedArgumentList.length; i++) {
let v = executor.unnamedArgumentList[i].value;
if (v instanceof SlashCommandClosure) {
/**@type {SlashCommandClosure}*/
const closure = v;
closure.scope.parent = this.scope;
if (closure.executeNow) {
v = (await closure.execute())?.pipe;
} else {
v = closure;
}
} else {
v = this.substituteParams(v);
}
value[i] = v;
}
if (!executor.command.splitUnnamedArgument) {
if (value.length == 1) {
value = value[0];
} else if (!value.find(it=>it instanceof SlashCommandClosure)) {
value = value.join('');
}
}
}
// unescape unnamed argument
if (typeof value == 'string') {
value = value
?.replace(/\\\{/g, '{')
?.replace(/\\\}/g, '}')
;
} else if (Array.isArray(value)) {
value = value.map(v=>{
if (typeof v == 'string') {
return v
?.replace(/\\\{/g, '{')
?.replace(/\\\}/g, '}');
}
return v;
});
}
let abortResult = await this.testAbortController();
if (abortResult) {
return abortResult;
}
executor.onProgress = (subDone, subTotal)=>this.onProgress?.(done + subDone, this.commandCount);
this.scope.pipe = await executor.command.callback(args, value ?? '');
this.#lintPipe(executor.command);
done += executor.commandCount;
this.onProgress?.(done, this.commandCount);
abortResult = await this.testAbortController();
if (abortResult) {
return abortResult;
}
}
}
/**@type {SlashCommandClosureResult} */
const result = Object.assign(new SlashCommandClosureResult(), { pipe: this.scope.pipe });
return result;
}
async testPaused() {
while (!this.abortController?.signal?.aborted && this.abortController?.signal?.paused) {
await delay(200);
}
}
async testAbortController() {
await this.testPaused();
if (this.abortController?.signal?.aborted) {
const result = new SlashCommandClosureResult();
result.isAborted = true;
result.isQuietlyAborted = this.abortController.signal.isQuiet;
result.abortReason = this.abortController.signal.reason.toString();
return result;
}
}
/**
* Auto-fixes the pipe if it is not a valid result for STscript.
* @param {SlashCommand} command Command being executed
*/
#lintPipe(command) {
if (this.scope.pipe === undefined || this.scope.pipe === null) {
console.warn(`${command.name} returned undefined or null. Auto-fixing to empty string.`);
this.scope.pipe = '';
}
}
}