Chloe environment building

AST.py

@@ -11,6 +11,7 @@ class ASTNode():
     #        but we will keep it for easier debugging, since effeciency is not a concern here
     def __init__(self, parseTree):
         self.parseTree = parseTree
+        self.children = []
 
     # Do certains actions on every node of the AST tree
     #   call the same method in each class and its children recursively
@@ -27,6 +28,21 @@ class ASTNode():
             if hasattr(c, 'recurseAction'):
                 c.recurseAction(actionName, result)
 
+    # This is a function to recursively build environment
+    # Modified from the function recurseAction above, to handle the proper linking of local variable environments
+    def recurseBuildEnv(self, parentEnv):
+        result = self.buildEnv(parentEnv)
+        preVarDcl = None
+        for c in self.children:
+            if c and hasattr(c, 'recurseBuildEnv'):
+                if preVarDcl:
+                    c.recurseBuildEnv(preVarDcl.env)
+                else:
+                    c.recurseBuildEnv(result)
+                if c.__class__.__name__ == 'VarDclNode':
+                    preVarDcl = c     
+
+
     def buildEnv(self, parentEnv):
         self.env = parentEnv
         return parentEnv