feat: symbol replace and more advanced enum

symbol.ts

@@ -1,7 +1,37 @@
-export const enum Symbol {
+export enum Symbol {
 	// on parse
 	Newline = "\\nl\\",
 	Tab = "\\tab\\",
 	// on replace
 	CursorEnd = "\\end\\",
 }
+
+export namespace Symbol {
+	export const MAP: Record<string, string> = {
+		[Symbol.Newline]: "\n",
+		[Symbol.Tab]: "\t",
+		[Symbol.CursorEnd]: "",
+	};
+	export function replaceSymbols(inputStr: string): string {
+		const result: string[] = [];
+		let i = 0;
+
+		while (i < inputStr.length) {
+			let found = false;
+			for (const symbol in MAP) {
+				if (inputStr.startsWith(symbol, i)) {
+					result.push(MAP[symbol]);
+					i += symbol.length;
+					found = true;
+					break;
+				}
+			}
+			if (!found) {
+				result.push(inputStr[i]);
+				i++;
+			}
+		}
+
+		return result.join("");
+	}
+}