parser.h

编译器：用于实现一个简单的编译器的语法分析功能

#ifndef PARSER_H
#define PARSER_H

#include "scanner.h"

typedef double (*FuncPtr)(double);
struct ExprNode
{
	enum Token_Type OpCode;

	union
	{
		struct 	{ 	ExprNode *Left, *Right;	} CaseOperator;
		struct {ExprNode *Child;FuncPtr MathFuncPtr;} CaseFunc;
		double CaseConst;
		double *CaseParmPtr;
	}Content;

};
extern void Parser(char *SrcFilePtr);

#endif