DusanTodorovic5/MicroJavaCompiler

This Git repository houses a micro Java compiler built in Java, employing jflex and jcup for lexical analysis and parsing. It offers an array of features, including support for global and local variables, functions, conditional statements, as well as iterative constructs like while and for loops, and a foreach loop.

MicroJava Compiler

Features:

• Global variables
• Local variables
• Functions
• Conditions
• While and For loops
• Foreach for iterating arrays

Example of a program

program example

const int one = 1;

int i;
bool ibool;

int arr2;

int arr[];
int a, curr;

{
	
	int sum(int z, int d)
	{
		return z + d;
	}
	

	int increment(int a, int inc) 
		int tmp; 
	{
		if(inc == one) tmp = 1;
		else if(inc == 2) tmp = a;

		return sum(a,tmp);
	}
	
	bool verify() {
		print('v');
		return false;
	}	
	
	void main()
	{
		
		if(1!=1) print(-6);
		else print(0);  
			
		ibool = false;
		i = 0;
		while(i < 5){
			if(i == 2) ibool = true;
			i++;
		}
		
		if(ibool)
			if(i == 5) print(1);
			else print(-1); 	
		a = 2;	
		arr = new int[3];
		arr[0] = 1 * a;
		arr[1] = 2 * a;
		arr[2] = sum(arr[1], arr[0]) * a + 1;
		if(verify() || arr[2] == 4) print(ord('A')); 
		else print(ord('a'));
		
		print(eol);
		i = 0;
		while (i < 10) {
			if(i == 3)
			{
				i++;
				continue;
			}
			if(i == 4) break;
			i = increment(i, 1);
		}
		
		if(i == 3 && verify()) print(-4);
		else print(4);  
		
		read(arr[0]);
		read(arr[1]);
		read(arr[2]);
		print(eol);
		print(sum(sum(arr[0], arr[1]), arr[2])); 
			
		print(eol); 
		print(increment(arr[2], 2));
		
		a = 3;
		i = 0;
		while (i < 3){
			arr[i] = arr[i] * 2 * a;
			i++;
		}
		
		arr.foreach(curr => print(curr););
		print(eol);
		
		arr2 = 0;
		arr.foreach(curr => {
			arr2 = arr2 + curr * curr;
		});
		print(arr2);
	
	}
}