packages/codemode/src/stdlib/number.ts

export const numberMethods = new Set(["toFixed", "toPrecision", "toExponential", "toString"])

export const numberConstants = new Set(["MAX_SAFE_INTEGER", "MIN_SAFE_INTEGER", "MAX_VALUE", "MIN_VALUE", "EPSILON"])

export const numberStatics = new Set(["isInteger", "isFinite", "isNaN", "isSafeInteger", "parseInt", "parseFloat"])

export const invokeNumberMethod = (value: number, name: string, args: Array<unknown>, node: AstNode): unknown => {
  const optNum = (index: number): number | undefined => {
    const arg = args[index]
    if (arg === undefined) return undefined
    if (typeof arg !== "number") throw new InterpreterRuntimeError(`Number.${name} expects a number argument.`, node)
    return arg
  }
  let result: unknown
  switch (name) {
    case "toFixed":
      result = value.toFixed(optNum(0))
      break
    case "toExponential":
      result = value.toExponential(optNum(0))
      break
    case "toPrecision": {
      const digits = optNum(0)
      result = digits === undefined ? value.toString() : value.toPrecision(digits)
      break
    }
    case "toString": {
      const radix = optNum(0)
      if (radix !== undefined && (radix < 2 || radix > 36)) {
        throw new InterpreterRuntimeError("Number.toString radix must be between 2 and 36.", node)
      }
      result = value.toString(radix)
      break
    }
    default:
      throw new InterpreterRuntimeError(`Number method '${name}' is not available in CodeMode.`, node)
  }
  return boundedData(result, `Number.${name} result`)
}

export const invokeNumberStatic = (name: string, args: Array<unknown>, node: AstNode): unknown => {
  const value = args[0]
  switch (name) {
    case "isInteger":
      return Number.isInteger(value)
    case "isFinite":
      return Number.isFinite(value)
    case "isNaN":
      return Number.isNaN(value)
    case "isSafeInteger":
      return Number.isSafeInteger(value)
    case "parseInt": {
      const radix = args[1]
      if (radix !== undefined && typeof radix !== "number") {
        throw new InterpreterRuntimeError("Number.parseInt expects a numeric radix.", node)
      }
      return parseInt(coerceToString(value), radix)
    }
    case "parseFloat":
      return parseFloat(coerceToString(value))
    default:
      throw new InterpreterRuntimeError(`Number.${name} is not available in CodeMode.`, node)
  }
}
import { type AstNode, InterpreterRuntimeError } from "../interpreter/model.js"
import { boundedData, coerceToString } from "./value.js"