analysestack.cpp

语法分析程序 实现C语言的语法分析过程

/*//此文件是保存分析栈的类，并能输出到文件analyse_tree.txt

typedef struct Stack
{
	string analyse_stack;
	string action;
};
class AnalyseStack
{
	private:
		vector<Stack> vc_analyseStack;
	public:
		AnalyseStack();
		bool push(Stack st);
		bool pop();
		void disPlay(ofstream out);
		~AnalyseStack();	
};*/

#include "main.h"

using namespace std;

void AnalyseStack::disPlay(std::ofstream &out)
{
	vector<Stack>::iterator it_begin=vc_analyseStack.begin(),it_end=vc_analyseStack.end();
	while(it_begin != it_end)
	{	
		vector<string>:: iterator it=(*it_begin).analyse_stack.begin();
		while(it!=(*it_begin).analyse_stack.end())
		{
				out<<(*it)<<" ";
				it++;
		}
		out<<"\t\t\t"<<(*it_begin).action<<endl;
		it_begin++;
	}
}

void AnalyseStack::push(Stack st)
{
	vc_analyseStack.push_back(st);
}

Stack AnalyseStack::pop()
{
	Stack st;
	st.action=vc_analyseStack[vc_analyseStack.size()-1].action;
	st.analyse_stack=vc_analyseStack[vc_analyseStack.size()-1].analyse_stack;
	vc_analyseStack.pop_back();
	return st;
}

AnalyseStack::~AnalyseStack() { }