diff -r fddf099a82f8 -r 64ec1884d860 solutions/cw4/compiler.sc
--- a/solutions/cw4/compiler.sc	Sat Dec 02 21:37:04 2023 +0000
+++ b/solutions/cw4/compiler.sc	Wed Feb 21 09:14:12 2024 +0000
@@ -119,6 +119,8 @@
   case "!=" => "if_icmpeq"
   case "<" => "if_icmpge"
   case ">" => "if_icmple"
+  case "<=" => "if_icmpgt"
+  case "=>" => "if_icmplt"
 }
 
 def compile_bexp(b: BExp, env : Env, jmp: String) : String = b match {
@@ -233,6 +235,8 @@
   println(s"done.")
 }
 
+//compile_run(Stmts.parse_all(tokenise(os.read(os.pwd / "pr.while"))).head, "pr")
+
 // ---- Q1
 
 // Fibonacci
@@ -250,7 +254,7 @@
 write "Result";
 write minus2"""
 
-compile_all(Stmts.parse_all(tokenise(fibonacciProgram)).head, "fib")
+//compile_all(Stmts.parse_all(tokenise(fibonacciProgram)).head, "fib")
 
 val factorialProgram = """write "Factorial";
 read n;
@@ -265,7 +269,7 @@
 write fact
 """
 
-compile_all(Stmts.parse_all(tokenise(factorialProgram)).head, "factorial")
+//compile_all(Stmts.parse_all(tokenise(factorialProgram)).head, "factorial")
 
 // ---- Q3
 
@@ -279,9 +283,13 @@
 //compile_run(Stmts.parse_all(tokenise(os.read(os.pwd / "collatz2.while"))).head, "collatz2")
 
 
-println(tokenise(os.read(os.pwd / "forloop.while")))
-compile_all(Stmts.parse_all(tokenise(os.read(os.pwd / "forloop.while"))).head, "forloop")
+//println(tokenise(os.read(os.pwd / "forloop.while")))
+//compile_all(Stmts.parse_all(tokenise(os.read(os.pwd / "forloop.while"))).head, "forloop")
+
 
+//compile_all(Stmts.parse_all(tokenise(os.read(os.pwd / "primes.while"))).head, "primes")
+
+//compile_run(Stmts.parse_all(tokenise(os.read(os.pwd / "pr.while"))).head, "pr")
 
 
 // for automated testing
@@ -292,11 +300,40 @@
 }
 
 @main
-def test(file: String) = {
+def run(file: String) = {
   val contents = os.read(os.pwd / file)
-  val class_name = file.stripSuffix(".")
-  compile_all(Stmts.parse_all(tokenise(os.read(os.pwd / file))).head, class_name)
-  tokenise(contents)
+  val class_name = file.stripSuffix(".while")
+  val tks = tokenise(os.read(os.pwd / file))
+  //println(tks)
+  //println(Stmts.parse(tks))
+  compile_run(Stmts.parse_all(tks).head, class_name)
+  //tokenise(contents)
+  //println(Stmts.parse_all(tokenise(os.read(os.pwd / file))).head)
 }
 
 
+//println("TEST")
+//println(tokenise(os.read(os.pwd / "pr.while")))
+//println(Stmts.parse_all(tokenise(os.read(os.pwd / "pr.while"))).head)
+
+
+
+
+/* For with scopes
+
+case For(x,a,b,bl) => {
+    val loop_begin = Fresh("Loop_begin")
+    val loop_end = Fresh("Loop_end")
+
+    val ind = env.getOrElse(x, -1)
+    val new_ind = Fresh_index()
+    val (assign,env1) = (compile_aexp(a, env) ++ i"istore $new_ind \t\t; ${x}-new", env + (x -> new_ind))
+
+    val bool = l"$loop_begin" ++ compile_aexp(Var(x), env1) ++ compile_aexp(b, env1) ++ i"if_icmpgt $loop_end"
+    val (block, env2) = compile_block(bl,env1,loop_end)
+    val inc = compile_stmt(Assign(x,Aop("+", Var(x), Num(1))),env2, "")._1 ++ i"goto $loop_begin" ++ l"$loop_end"
+    (assign ++ bool ++ block ++ inc, if (ind != -1){env2 + (x -> ind)} else {env2 - x})
+  }
+
+
+*/