From d403acf6e1266e73a4ed43b63032be04da2c71d8 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Thu, 11 Feb 2016 20:33:14 +0000
Subject: Change FieldAccessNode to support static fields

---
 .../org/zwobble/couscous/ast/FieldAccessNode.java  | 35 +++++++++++++++++-----
 .../backends/python/PythonCodeGenerator.java       |  2 +-
 .../zwobble/couscous/interpreter/Evaluator.java    |  6 ++--
 3 files changed, 33 insertions(+), 10 deletions(-)

(limited to 'src/main/java/org')

diff --git a/src/main/java/org/zwobble/couscous/ast/FieldAccessNode.java b/src/main/java/org/zwobble/couscous/ast/FieldAccessNode.java
index d05a06a..a949630 100644
--- a/src/main/java/org/zwobble/couscous/ast/FieldAccessNode.java
+++ b/src/main/java/org/zwobble/couscous/ast/FieldAccessNode.java
@@ -4,28 +4,49 @@ import org.zwobble.couscous.ast.visitors.AssignableExpressionNodeVisitor;
 import org.zwobble.couscous.ast.visitors.ExpressionNodeMapper;
 import org.zwobble.couscous.ast.visitors.NodeTransformer;
 
+import static org.zwobble.couscous.ast.InstanceReceiver.instanceReceiver;
+import static org.zwobble.couscous.ast.StaticReceiver.staticReceiver;
+
 public class FieldAccessNode implements AssignableExpressionNode {
     public static FieldAccessNode fieldAccess(
             ExpressionNode left,
             String fieldName,
-            TypeName type) {
+            TypeName type)
+    {
+        return fieldAccess(instanceReceiver(left), fieldName, type);
+    }
+
+    public static FieldAccessNode fieldAccess(
+        TypeName left,
+        String fieldName,
+        TypeName type)
+    {
+        return fieldAccess(staticReceiver(left), fieldName, type);
+    }
+
+    public static FieldAccessNode fieldAccess(
+        Receiver left,
+        String fieldName,
+        TypeName type)
+    {
         return new FieldAccessNode(left, fieldName, type);
     }
     
-    private final ExpressionNode left;
+    private final Receiver left;
     private final String fieldName;
     private final TypeName type;
     
     public FieldAccessNode(
-            ExpressionNode left,
-            String fieldName,
-            TypeName type) {
+        Receiver left,
+        String fieldName,
+        TypeName type)
+    {
         this.left = left;
         this.fieldName = fieldName;
         this.type = type;
     }
     
-    public ExpressionNode getLeft() {
+    public Receiver getLeft() {
         return left;
     }
     
@@ -45,7 +66,7 @@ public class FieldAccessNode implements AssignableExpressionNode {
     @Override
     public ExpressionNode transform(NodeTransformer transformer) {
         return new FieldAccessNode(
-            transformer.transformExpression(left),
+            transformer.transformReceiver(left),
             fieldName,
             transformer.transform(type));
     }
diff --git a/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java b/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
index d7e56aa..c1b04db 100644
--- a/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
+++ b/src/main/java/org/zwobble/couscous/backends/python/PythonCodeGenerator.java
@@ -290,7 +290,7 @@ public class PythonCodeGenerator {
 
         @Override
         public PythonExpressionNode visit(FieldAccessNode fieldAccess) {
-            return pythonAttributeAccess(generateExpression(fieldAccess.getLeft()), fieldAccess.getFieldName());
+            return pythonAttributeAccess(generateReceiver(fieldAccess.getLeft()), fieldAccess.getFieldName());
         }
 
         @Override
diff --git a/src/main/java/org/zwobble/couscous/interpreter/Evaluator.java b/src/main/java/org/zwobble/couscous/interpreter/Evaluator.java
index 815bf10..68469fd 100644
--- a/src/main/java/org/zwobble/couscous/interpreter/Evaluator.java
+++ b/src/main/java/org/zwobble/couscous/interpreter/Evaluator.java
@@ -55,7 +55,8 @@ public class Evaluator implements ExpressionNodeMapper<InterpreterValue> {
         assignment.getTarget().accept(new AssignableExpressionNodeVisitor(){
             @Override
             public void visit(FieldAccessNode fieldAccess) {
-                InterpreterValue left = eval(fieldAccess.getLeft());
+                // TODO: handle static receiver
+                InterpreterValue left = eval(((InstanceReceiver)fieldAccess.getLeft()).getExpression());
                 left.setField(fieldAccess.getFieldName(), value);
             }
             
@@ -117,7 +118,8 @@ public class Evaluator implements ExpressionNodeMapper<InterpreterValue> {
 
     @Override
     public InterpreterValue visit(FieldAccessNode fieldAccess) {
-        InterpreterValue left = eval(fieldAccess.getLeft());
+        // TODO: handle static receiver
+        InterpreterValue left = eval(((InstanceReceiver)fieldAccess.getLeft()).getExpression());
         return left.getField(fieldAccess.getFieldName());
     }
 
-- 
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