variable references work!

scripting.py

@@ -108,6 +108,10 @@ class Synt(Typeable):
     def SyntDefault(cls, syntParent):
         return cls(syntParent)
 
+    @classmethod
+    def RgsyntReplace(cls, syntChild, st, rtype):
+        return []
+        
     def ProjectTypeinForChild(self, pwParent, syntChild, st):
         def OnSelect(synt, psel):
             self.Replace(syntChild, synt)
@@ -168,9 +172,7 @@ class SyntDesc(Synt):
             return self.rgsynt[isynt]
         def set(self, syntNew):
             self.Replace(isynt, syntNew)
-        def delete(self):
-            self.Replace(isynt, None)
-        return property(get, set, delete)
+        return property(get, set)
 
     def Populate(self):
         for desce in self.desc:
@@ -189,18 +191,31 @@ class SyntDesc(Synt):
             self.Replace(isynt, None)
         return property(get, set, delete)
     
-    def RtypeTopForChild(self, syntChild):
-        isyntChild = self.Isynt(syntChild)
-        isyntDesce = 0
+    def DesceChild(self, isyntChild):
+        isyntDesce = 0;
         for desce in self.desc:
             if isinstance(desce, tuple):
                 if isyntDesce == isyntChild:
-                    if isinstance(desce[1], tuple):
-                        return desce[1][0]
-                    return None
+                    return desce
                 isyntDesce += 1
         return None        
         
+    def RtypeTopForChild(self, syntChild):
+        isyntChild = self.Isynt(syntChild)
+        desce = self.DesceChild(isyntChild)
+        if desce != None and isinstance(desce[1], tuple):
+            return desce[1][0]
+        return None
+
+    def RgsyntForChild(self, syntChild, st):
+        isyntChild = self.Isynt(syntChild)
+        desce = self.DesceChild(isyntChild)
+        if desce != None:
+            rtype = None
+            if isinstance(desce[1], tuple):
+                rtype = desce[1][1]
+            return desce[0].RgsyntReplace(syntChild, st, rtype)
+        return []
     def Project(self, pcur):
         "adds more horizontal pws to a horizontal pw"        
         isynt = 0
@@ -217,9 +232,14 @@ class SyntDesc(Synt):
         
 class SyntName(Synt):
     def Project(self, pcur):
-        PwTypein(pcur.PwHoriz(self), self.GetStTypein(), self)
+        PwTypein(pcur.PwHoriz(self), self.St(), self)
+    def St(self):
+        return self.GetStTypein()
         
 class SyntExpr(Synt):
+    @classmethod
+    def RgsyntReplace(cls, syntChild, st, rtype):
+        return RtypeAny().RgsyntFromSt(syntChild.syntParent, st)
     def Project(self, pcur):
         self.syntParent.ProjectTypeinForChild(pcur.PwHoriz(self), self, "     ")
     
@@ -274,9 +294,12 @@ class SyntLit(Synt):
         Synt.InitPersistent(self, syntParent)
         self.value = value
         self.rtype = rtype
-
+    def StForTypein(self):
+        return self.rtype.StForSobj(self.value)
     def Rtype(self):
-        return rtype
+        return self.rtype
+    def Project(self, pcur):
+        self.syntParent.ProjectTypeinForChild(pcur.PwHoriz(self), self, self.StForTypein())
         
 @RegStmt
 class SyntBlank(SyntDesc):
@@ -289,7 +312,7 @@ class SyntVar(SyntDesc):
     expr = SyntDesc.DefProp(1)
     @classmethod
     def FVarOfType(cls, synt, rtype):
-        return isinstance(synt, cls) and synt.expr != None and rtype.FOverlap(expr.Rtype())
+        return isinstance(synt, cls) and synt.expr != None and rtype.FOverlap(synt.expr.Rtype())
 
 class SyntVarRef(Synt):
     def __init__(self, syntParent, syntVar = None):
@@ -297,6 +320,10 @@ class SyntVarRef(Synt):
         self.syntVar = syntVar
     def Rtype(self):
         return self.syntVar.Rtype()
+    def StForTypein(self):
+        return self.syntVar.name.St()
+    def Project(self, pcur):
+        self.syntParent.ProjectTypeinForChild(pcur.PwHoriz(self), self, self.StForTypein())
     
 @RegStmt    
 class SyntIf(SyntDesc):