Need Help

[Nael]

Hi,
I'm trying to make parsing arithmetic expressions in java for the following:
1. A = (B + C) * D - E;
2. F = (G + H) - (I + J);
3. G = H + A[i];
4. If (I == J) F = G + H;
Else F = G - H;
5. Loop: G = G + A[i];
I = I + J;
If (I != H) Goto Loop;
6. If (G < H) Goto Less;
7. While (save[i] == K)
I = I + J;
If anyone can help me with that
Thank you all.

[MK12]

.. You never described exactly what is wrong, and what all those variables are supposed to be.. You pretty much wrote the code yourself there, what do you need?

double A,B,C,D,E,F,G,H,I,J,K;
/* give the following doubles a value */
B = 0;
C = 0;
D = 0;
E = 0;
G = 0;
H = 0;
I = 0;
J = 0;
double[] save = new double[0]; // do same as next array
double[] Arr = new double[0]; // change the 0 then give the array doubles values
// or do this: double[] Arr = { (double1), (double2), (double3), etc };
/* end */
A = (B + C) * D - E;
F = (G + H) - (I + J);
G = H + Arr[I]; // ? A is not an array... variable changed
if (I == J) {
     F = G + H;
}
else {
     F = G - H;
}
for(double item:A) {
     G += item;
}
I += J;
if(I != H) {
     while(save[I] == K)
          I += J;
     }
}
if(G < H) {
     Goto Less; // What is less?
}

compare to this:

1. A = (B + C) * D - E;
2. F = (G + H) - (I + J);
3. G = H + A[i];
4. If (I == J) F = G + H;
Else F = G - H;
5. Loop: G = G + A[i];
I = I + J;
If (I != H) Goto Loop;
6. If (G < H) Goto Less;
7. While (save[i] == K)
I = I + J;

[Nael]

Thank you for your replay.
What I need is:
A simulation is to be performed on the assembly code level by
writing a mini-compiler for each ISA:
3, 2-Address Architecture,Accumulator Architecture, Stack Architecture, and Load-Store Architecture.
The purpose of writing a mini-compiler for each ISA,
Thank you
I hope that you got the idea

[Eranga]

Are you want to write a parser for the logic, or to the compiler you are talking about.

[Nael]

Hi
I need both.
I already done the parser
What I need now is the compiler
Thank you

[Eranga]

To do a compilation you need have to some logics to test in the code, do you?

[Nael]

yes I have.

[CJSLMAN]

Nael... this is a pretty advanced topic for the "New to Java" sub-forum (I'm not a newbie to Java, but I haven't a clue to what you're looking for. I think you want to make a mini-compiler in Java). If you don't get any responses, maybe you can request the mods that this post be moved to the "Advanced Java" sub-forum.

Luck,
CJSL