+ for statements

Author: thoka

README.md

@@ -79,6 +79,9 @@ As demonstrated by the third example above, python scripts can step in, to chang
 - Write and collect example/test java files with supposed translations.
 - do switch statement right
 - make install
+- do java.typed right for VarArityParam (see LoopStyles)
+ 
+
 
 ### Pitfalls
 

j2py/java/util.py

@@ -1,4 +1,35 @@
-class List(list):
+class Collection(list):
+    pass
+
+
+class List(Collection):
     pass
 
 
+class Iterator(object):
+
+    def __init__(self,collection):
+        self.pos = 0
+        self.collection = collection
+
+    def hasNext(self):
+        return self.pos < len(self.collection)
+
+    def next(self):
+        self.pos += 1
+        return self.collection[self.pos-1]
+            
+
+class ArrayList(Collection):
+    def __init__(self,typ):
+        self._typ = typ
+        
+    def add(self,o):
+        self.append(o)
+      
+    def iterator(self):
+        return Iterator(self)
+        
+        
+                    
+

j2py/test/j2py/LoopStyles.java

@@ -0,0 +1,35 @@
+// taken from http://www.javapractices.com/topic/TopicAction.do?Id=125
+
+import java.util.*;
+
+public final class LoopStyles {
+
+  public static void main(String... aArguments ) {
+    List<String> flavours = new ArrayList<String>();
+    flavours.add("chocolate");
+    flavours.add("strawberry");
+    flavours.add("vanilla");
+
+    useWhileLoop( flavours );
+
+    useForLoop( flavours );
+  }
+
+  private static void useWhileLoop( Collection<String> aFlavours ) {
+    Iterator<String> flavoursIter = aFlavours.iterator();
+    while ( flavoursIter.hasNext() ){
+      System.out.println( flavoursIter.next() );
+    }
+  }
+
+  /**
+  * Note that this for-loop does not use an integer index.
+  */
+  private static void useForLoop( Collection<String> aFlavours ) {
+    for ( Iterator<String> flavoursIter = aFlavours.iterator(); flavoursIter.hasNext(); ) {
+      System.out.println( flavoursIter.next() );
+    }
+  }
+} 
+
+

tools/pp2py/statement.str

@@ -163,14 +163,14 @@ rules
   for-head :
     For(init, cond, update, body)
       ->
-    H hs=0 [
-      "::###NOTIMPL for"
-      " "
-      ~binit
-      H hs=1 [";" ~*bcond]
-      H hs=1 [";" ~bupdate]
-      ":"
+    V [  
+        ~binit
+        H hs=0 [
+          "while " ~*bcond ":"
+        ]
+        H hs=1 ["    " ~bupdate]  
     ]
+    
     where
       <separate-by-comma> update => bupdate