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#pragma once
#include <iosfwd>
#include "antlr4-runtime.h"
// 以树状缩进形式直接打印 ANTLR parse tree。
// 该接口主要服务 Lab1：当文法扩展后，可以直接观察 parse tree 的层级和左右
// 顺序是否符合预期，而不必先进入后续语义或 IR 阶段。
void PrintSyntaxTree(antlr4::tree::ParseTree* tree, antlr4::Parser* parser,
std::ostream& os);
