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prog2.cpp
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prog2.cpp
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/*
* main.cpp
*
* CS280 - Spring 2021
* parser testing program
*/
#include <iostream>
#include <fstream>
#include "lex.h"
#include "parse.h"
using namespace std;
//extern int error_count;
int main(int argc, char *argv[])
{
int lineNumber = 1;
istream *in = NULL;
ifstream file;
for( int i=1; i<argc; i++ )
{
string arg = argv[i];
if( in != NULL )
{
cerr << "ONLY ONE FILE NAME ALLOWED" << endl;
return 0;
}
else
{
file.open(arg.c_str());
if( file.is_open() == false )
{
cerr << "CANNOT OPEN " << arg << endl;
return 0;
}
in = &file;
}
}
if(argc == 1)
{
cerr << "Missing File Name." << endl;
return 0;
}
//cout << "before entering parser" << endl;
bool status = Prog(*in, lineNumber);
//cout << "returned from parser" << endl;
if( !status )
{
cout << "Unsuccessful Parsing " << endl << "Number of Syntax Errors " << ErrCount() << endl;
}
else
{
cout << "Successful Parsing" << endl;
}
return 0;
}