for and doFor in KissInterp2, roughly

src/kiss/KissInterp2.kiss

@@ -26,7 +26,7 @@
 
 (prop :Map<String,(Array<ReaderExp>,Dynamic->Void)->Void> specialForms)
 
-(method makeExp [:ReaderExpDef def]
+(function makeExp [:ReaderExpDef def]
 	(object pos null def def))
 
 (method declareInScope [:Map<String,Dynamic> scope]
@@ -35,8 +35,33 @@
 			(evalCC (second args) ->val {(dictSet scope name val) (cc val)})))
 
 (function callSymbol [:String symbolName :Array<ReaderExp> args]
-	(ReaderExpDef.CallExp
-		(object pos null def (ReaderExpDef.Symbol symbolName)) args))
+	(makeExp (ReaderExpDef.CallExp
+		(makeExp (ReaderExpDef.Symbol symbolName)) args)))
+
+(function listExp [:Array<ReaderExp> args]
+	(makeExp (ReaderExpDef.ListExp args)))
+
+(method forLoop [collect]
+	->[args cc]
+		(let [varName (first args) collectionExp (second args) body (args.slice 2)]
+		 	(localScopes.push (new Map))
+			(evalCC collectionExp ->collection
+				(let [:Iterable<Dynamic> collection collection
+						:Array<Dynamic> results []
+						iter (collection.iterator)]
+					(dictSet (last localScopes) "__iter__" iter)
+					(localFunction run []
+						(if (iter.hasNext)
+								(evalCC (callSymbol "let" (.concat [(listExp [varName (callSymbol "__iter__.next" [])])] body))
+									->v {(when collect
+												(results.push v))
+										(run)
+										})
+							{
+								(localScopes.pop)
+								(cc results)
+							}))
+					(run)))))
 
 (method makeFunction [:Array<ReaderExp> argExps :Array<ReaderExp> bodyExps]
 	(let [capture (localScopes.copy)
@@ -87,7 +112,8 @@
 					(if val
 							(evalCC (second args) cc)
 						(evalCC (third args) cc)))
-	// TODO handle early return
+	// TODO handle early return, loop break/continue
+	// TODO this should make a local scope!
 	=>"begin"
 		->[args cc]
 			(_evalAllCC args ->values
@@ -96,6 +122,7 @@
 		(declareInScope globals)
 	=>"localVar"
 	 	(declareInScope (nth localScopes -1))
+	// TODO support list unpacking 
 	=>"let"
 		->[args cc]
 			(let [bindings (first args)
@@ -155,12 +182,10 @@
 					func (makeFunction argExps bodyExps)]
 				(dictSet globals name func)
 				(cc func))
-	/*
 	=>"for"
 		(forLoop true)
 	=>"doFor"
 		(forLoop false)
-		*/
 	=>"while"
 		->[args cc]
 			(let [condition (first args) body (rest args)]

src/test/cases/KissInterp2TestCase.hx

@@ -43,5 +43,8 @@ class KissInterp2TestCase extends Test {
    function testWhile() {
         _testWhile();
     }
+    function testFor() {
+        _testFor();
+    }
      
 }

src/test/cases/KissInterp2TestCase.kiss

@@ -55,3 +55,7 @@
 							(while (< c 9)
 								(set c (+ c 1)))
 							c)")))
+
+(function _testFor []
+	(let [interp (new Interp)]
+	(assertEval [1 2 3] "(for i (range 3) (+ i 1))")))