CONVERT TO SVELT 5

"use client"

import type React from "react"

import { useState, useRef } from "react"

type ASTNode = | { type: "binary" operator: { type: "literal"; literal: string; whitespace?: string } left: ASTNode right: ASTNode } | { type: "int_constant" token: string whitespace?: string } | { type: "identifier" identifier: string whitespace?: string }

interface BinaryExpressionEditorProps { ast: ASTNode }

function flattenAST(node: ASTNode): Array<{ value: string; type: "operator" | "number" | "identifier" }> { if (node.type === "binary") { return [ ...flattenAST(node.left), { value: node.operator.literal, type: "operator" as const }, ...flattenAST(node.right), ] } if (node.type === "int_constant") { return [{ value: node.token, type: "number" as const }] } if (node.type === "identifier") { return [{ value: node.identifier, type: "identifier" as const }] } return [] }

export function BinaryExpressionEditor({ ast }: BinaryExpressionEditorProps) { const [tokens, setTokens] = useState(() => flattenAST(ast)) const [editingIndex, setEditingIndex] = useState<number | null>(null) const [editValue, setEditValue] = useState("") const inputRef = useRef(null)

const parseInput = (text: string) => { const parts = text.split(/\s+/).filter(Boolean) return parts.map((part) => { if (["+", "-", "*", "/", "%"].includes(part)) { return { value: part, type: "operator" as const } } else if (/^\d+$/.test(part)) { return { value: part, type: "number" as const } } else { return { value: part, type: "identifier" as const } } }) }

const handleTokenClick = (index: number, e: React.MouseEvent) => { e.stopPropagation() setEditingIndex(index) setEditValue(tokens[index].value) setTimeout(() => inputRef.current?.focus(), 0) }

const handleTokenChange = (e: React.ChangeEvent) => { setEditValue(e.target.value) }

const handleTokenBlur = () => { if (editingIndex !== null && editValue.trim()) { const newTokens = [...tokens] const parsed = parseInput(editValue)[0] if (parsed) { newTokens[editingIndex] = parsed setTokens(newTokens) } } setEditingIndex(null) setEditValue("") }

const handleTokenKeyDown = (e: React.KeyboardEvent) => { if (e.key === "Enter") { handleTokenBlur() } else if (e.key === "Escape") { setEditingIndex(null) setEditValue("") } else if (e.key === "Backspace" && editValue === "" && editingIndex !== null) { // Delete the token if backspace on empty input const newTokens = tokens.filter((_, i) => i !== editingIndex) setTokens(newTokens) setEditingIndex(null) } }

const getTokenStyles = (type: string) => { switch (type) { case "operator": return "text-cyan-300 bg-cyan-500/10 border-cyan-500/30" case "number": return "text-emerald-300 bg-emerald-500/10 border-emerald-500/30" case "identifier": return "text-violet-300 bg-violet-500/10 border-violet-500/30" default: return "" } }

return ( {tokens.map((token, index) => ( {editingIndex === index ? ( <input ref={inputRef} type="text" value={editValue} onChange={handleTokenChange} onBlur={handleTokenBlur} onKeyDown={handleTokenKeyDown} className={h-6 rounded border px-2 text-sm bg-transparent outline-none ${getTokenStyles(token.type)}} style={{ width: ${Math.max(editValue.length * 0.6 + 1, 2)}rem }} /> ) : ( <button onClick={(e) => handleTokenClick(index, e)} className={h-6 rounded border px-2 text-sm hover:brightness-125 transition-all ${getTokenStyles(token.type)}} > {token.value} )} ))}

  <details className="group">
    <summary className="cursor-pointer font-mono text-xs text-muted-foreground hover:text-foreground">
      View Tokens
    </summary>
    <pre className="mt-2 overflow-auto rounded-lg border border-border bg-secondary p-4 font-mono text-xs text-muted-foreground">
      {JSON.stringify(tokens, null, 2)}
    </pre>
  </details>
</div>

) }

I'll convert your React Binary Expression Editor component to Svelte 5 using the new runes syntax. This will include converting React hooks to Svelte runes, updating the template syntax, and maintaining all the interactive functionality for editing AST tokens.