Created
June 16, 2017 18:55
-
-
Save jkoppel/69e23d45b3873e244f99398322121208 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
adt Prog { | |
Var1 {} | |
Var2 {} | |
Const {int val; } | |
Add { Prog left; Prog right; } | |
Mul { Prog left; Prog right; } | |
} | |
int interpret(Prog prog, int x, int y) { | |
switch(prog) { | |
case Var1: return x; | |
case Var2: return y; | |
case Const: return prog.val; | |
case Add: return interpret(prog.left, x, y) + interpret(prog.right, x, y); | |
case Mul: return interpret(prog.left, x, y) * interpret(prog.right, x, y); | |
} | |
} | |
int size(Prog prog) { | |
switch (prog) { | |
case Var1: return 1; | |
case Var2: return 1; | |
case Const: return 1; | |
case Add: return 1 + size(prog.left) + size(prog.right); | |
case Mul: return 1 + size(prog.left) + size(prog.right); | |
} | |
} | |
// x + 2 * y + x * x + 5 | |
// x * y + 5 | |
harness void main() { | |
Prog p = ??; | |
//minimize(size(p)); | |
//assert(interpret(p,0,0) == 5); | |
//assert(interpret(p,0,1) == 5); | |
//assert(interpret(p,1,0) == 5); | |
//assert(interpret(p,1,1) == 6); | |
//assert(interpret(p,2,2) == 9); | |
assert(interpret(p,0,0) == 5); | |
assert(interpret(p,0,1) == 7); | |
assert(interpret(p,1,0) == 7); | |
assert(interpret(p,1,1) == 9); | |
assert(interpret(p,2,0) == 11); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment