table.h

c语言做的pl0编译器

// table.h: interface for the table class.
//////////////////////////////////////////////////////////////////////
#ifndef __TABLE_H
#define __TABLE_H
#include "pl0.h"
#include "errors.h"
#include "yufa.h"
#define TABLE_SIZE	100

enum object {constant,variable,procedure};

struct table_type
{
	char name[IDENT_LENGTH+1];
	object kind;
	union{
		int val;
		struct{
			int level,adr,size;
		};
	};
};

class Ctable
{
public:
	Ctable(CPlCompiler*);
	void Enter(enum object k);
	int Position(char *id);
	int TableIndex(){return tx[lev];}
public:
	table_type table[TABLE_SIZE];
private:
	int tx[MAX_LEVEL+1];
	int lev;

	CPlCompiler *pl;
};

#endif