main.cpp

PL语言到中间代码的编译程序

#include "common.h"

void main(int argc,char **argv)
{	
	char obj_filename[FILENAMESIZE];
	FILE *obj_file;
	int obj_length;
	int *code;

	if(argc>1)
		strcpy(obj_filename,argv[1]);
	else
	{
		printf("Please input the source file name : ");
		scanf("%s",obj_filename);
	}
	if(!(obj_file=fopen(obj_filename,"rb")))
	{
		printf("Error : source file %s not found\n",obj_filename);
		exit(1);
	}
	fseek(obj_file,0,SEEK_END);
	obj_length=ftell(obj_file);
	rewind(obj_file);

	if(obj_length%(3*sizeof(int)))
	{
		printf("Error object file");
		exit(2);
	}
	code=new int[obj_length/sizeof(int)];
	if(!code)
	{
		printf("Not enough heap");
		exit(3);
	}
	fread(code,obj_length,1,obj_file);
	//全部指令读入内存
	Interpret(code);

	delete code;
	fclose(obj_file);
}