@polygonjs/polygonjs/dist/src/engine/expressions/methods/strSub.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
import { isNumber, isString } from "../../../core/Type";
import { BaseMethod } from "./_Base";
function toString(arg) {
  if (arg == null) {
    return "";
  }
  return isString(arg) ? arg : `${arg}`;
}
function toInt(arg, defaultVal) {
  if (arg == null) {
    return defaultVal;
  }
  return isNumber(arg) ? arg : parseInt(arg);
}
export class StrSubExpression extends BaseMethod {
  // str_chars_count('bla') => 3
  static requiredArguments() {
    return [
      ["string", "string to get range from"],
      ["integer", "range start"],
      ["integer", "range size"]
    ];
  }
  // findDependency(index_or_path: number | string): MethodDependency | null {
  // 	return null;
  // 	// return this.createDependencyFromIndexOrPath(index_or_path)
  // }
  async processArguments(args) {
    const string = toString(args[0]);
    const rangeStart = toInt(args[1], 0);
    let rangeSize = toInt(args[2], 1);
    if (string) {
      return string.substring(rangeStart, rangeStart + rangeSize);
    }
    return "";
  }
}