/**
 * Demonstrates the ADD opcode working with both numbers and strings
 *
 * ADD now behaves like JavaScript's + operator:
 * - If either operand is a string, it does string concatenation
 * - Otherwise, it does numeric addition
 */

import { toBytecode, run } from "#reef"

// Numeric addition
const numericAdd = toBytecode(`
  PUSH 10
  PUSH 5
  ADD
  HALT
`)

console.log('Numeric addition (10 + 5):')
console.log(await run(numericAdd))
// Output: { type: 'number', value: 15 }

// String concatenation
const stringConcat = toBytecode(`
  PUSH "hello"
  PUSH " world"
  ADD
  HALT
`)

console.log('\nString concatenation ("hello" + " world"):')
console.log(await run(stringConcat))
// Output: { type: 'string', value: 'hello world' }

// Mixed: string + number
const mixedConcat = toBytecode(`
  PUSH "count: "
  PUSH 42
  ADD
  HALT
`)

console.log('\nMixed concatenation ("count: " + 42):')
console.log(await run(mixedConcat))
// Output: { type: 'string', value: 'count: 42' }

// Building a message
const buildMessage = toBytecode(`
  PUSH "You have "
  PUSH 3
  ADD
  PUSH " new messages"
  ADD
  HALT
`)

console.log('\nBuilding a message:')
console.log(await run(buildMessage))
// Output: { type: 'string', value: 'You have 3 new messages' }

// Computing then concatenating
const computeAndConcat = toBytecode(`
  PUSH "Result: "
  PUSH 10
  PUSH 5
  ADD
  ADD
  HALT
`)

console.log('\nComputing then concatenating ("Result: " + (10 + 5)):')
console.log(await run(computeAndConcat))
// Output: { type: 'string', value: 'Result: 15' }