driver.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "compiler.h"

extern FILE* yyin;
extern int yyparse();

// A global variable that holds a pointer to the AST root
ASTNode* gASTRoot;

int main(int argc, char**argv)
{
        if (argc != 2){
                 printf("ERROR: Invalid number of command-line arguments. Usage: bcc File_Name.bc\n");
                 exit(1);
        }
    	yyin = fopen(argv[1], "r" );
        if (yyin == NULL){
                 printf("ERROR: Failed to open the input file\n");
                 exit(1);
        }

        // Call the parser. 
        // Add embedded actions to the parser (in BabyC.y) to construct the AST and store its root in gASTRoot. 
        yyparse();

        fclose(yyin);

        // Now that the AST has been constructed, pass its root to the function that traverses it and generates the ILOC code.
        char * test = strtok(argv[1], ".");
        char * outputfile = (char *) calloc(strlen(test) + 8, sizeof(char));
        strcat(outputfile, test);
        strcat(outputfile, ".iloc");
        FILE * output = fopen(outputfile, "w+");
        fputs("", output);
        fclose(output);
        output = fopen(outputfile, "a+");
        
       // FILE * outputFile = fopen(, "a+");
         GenerateILOC(gASTRoot, output);
        // Code generation is commented out in this assignment. You will implement it in the next assignment. 		
}