main.c

tiny 编译器程序的设计 修改了原作者的程序 现在能生成中间代码

#include "globals.h"
#include "util.h"
#include  "scan.h"
#include  "parse.h"
#include  "analyze.h"
#include  "cgen.h"
int lineno=0;
FILE * source;
FILE * listing;
FILE *  code;
Error=FALSE;
void main()
{TreeNode *syntaxTree;
char pgm[20];
strcpy(pgm,"s.txt");
source=fopen(pgm,"r");
if(source==NULL)
{fprintf(stderr,"file %s not found \n",pgm);
exit(1);
}
listing =stdout;
fprintf(listing,"\nTINY COMPILATION: %s\n",pgm);
syntaxTree=parse();
fprintf(listing,"\nSyntax tree:\n");
printTree(syntaxTree);
if(!Error)
{
	fprintf(listing,"\nBuilding Symbol Table.....\n");
buildSymtab(syntaxTree);
fprintf(listing,"\nChecking Types...\n");
typeCheck(syntaxTree);
fprintf(listing,"\nType Checking Finished\n");
}
if(!Error)
{ 
 code=fopen("sy.txt","w");
 if(code==NULL)
 {
  printf("Unable to open file\n");
   exit(1);
 }
 GenMidCode(syntaxTree,code);
 fclose(code);
} 
}