error.cpp

一个编译器原码

#include "compile.h"

//******************************************************************/
//函数原型：void errorOccur(int errorNum)
//参数说明：错误代码
//函数功能：出错处理程序
//返回值  ：无
//******************************************************************/
void errorOccur(int errorNum)
{
	errorCount++;
	printf("error:");
	switch(errorNum)
	{
	case 0:printf("number too large");break;
	case 1:printf("need keyword 'program' here");break;
	case 2:printf("need keyword 'begin' here");break;
	case 3:printf("need keyword 'end' here");break;
	case 4:printf("need a identifier here, compile terminate");exit(0);break;
	case 5:printf("identifier not defined");break;
	case 6:printf("need ':=' here");break;
	case 7:printf("need keyword 'then' here");break;
	case 8:printf("need keyword 'do' here");break;
	case 9:printf("need keyword 'until' here");break;
	case 10:printf("need one of 'if','while','repeat','write',aident,bident here");break;
	case 11:printf("need aident here, not bident");break;
	case 12:printf("need ')' here");break;
	case 13:printf("need one of '(',aident,number here");break;
	case 14:printf("need one of aident,number here");break;
	case 15:printf("need one of '=','>','>=','<','<=' here");break;
	}
	printf("\n");
	
	return;
}