From f25d7b52290853614506808954908226217aa2b2 Mon Sep 17 00:00:00 2001
From: "rogerl%netscape.com" <rogerl%netscape.com>
Date: Fri, 11 Jun 1999 23:05:16 +0000
Subject: [PATCH] Mucking about with stuff.

---
 js/js2/java/Environment.java    |  7 ++++++-
 js/js2/java/JSGrammar.g         |  8 ++++----
 js/js2/java/JSObject.java       | 20 +++++++++++++++-----
 js/js2/java/NativeFunction.java |  3 +--
 js/js2/java/NativeNumber.java   |  2 +-
 5 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/js/js2/java/Environment.java b/js/js2/java/Environment.java
index 006320df63ab..76a393adc33b 100644
--- a/js/js2/java/Environment.java
+++ b/js/js2/java/Environment.java
@@ -3,7 +3,12 @@ import java.util.Hashtable;
 
 class Environment {
 
-    JSObject scope = new JSObject("globals");
+    JSObject scope = new JSObject("globals", null);
+
+    void enterNewScope(JSObject newScope)
+    {
+        
+    }
 
     String print()
     {
diff --git a/js/js2/java/JSGrammar.g b/js/js2/java/JSGrammar.g
index 4a0f2594bccb..78eb2fc33d1e 100644
--- a/js/js2/java/JSGrammar.g
+++ b/js/js2/java/JSGrammar.g
@@ -81,15 +81,15 @@ primary_expression[boolean initial] returns [ExpressionNode e]
 
 simple_expression returns [ExpressionNode e]
     { e = null; }
-	:	"null"      { e = new JSObject("null"); }
+	:	"null"      { e = new JSObject("null", null); }             // XXX
 	|	"true"      { e = JSBoolean.JSTrue; }
 	|	"false"     { e = JSBoolean.JSFalse; }
 	|	opN:NUMBER  { e = new JSDouble(opN.getText()); }
 	|	opS:STRING  { e = new JSString(opS.getText()); }
-	|	"this"      { e = new JSObject("this"); }
-	|	"super"     { e = new JSObject("super"); }
+	|	"this"      { e = new JSObject("this", null); }             // XXX
+	|	"super"     { e = new JSObject("super", null); }            // XXX
 	|	e = qualified_identifier_or_parenthesized_expression[true]
-	|	opR:REGEXP  { e = new JSObject(opR.getText()); }
+	|	opR:REGEXP  { e = new JSObject(opR.getText(), null); }      // XXX
 	|	e = array_literal
 	;
 
diff --git a/js/js2/java/JSObject.java b/js/js2/java/JSObject.java
index db444dafdda9..361fc4100171 100644
--- a/js/js2/java/JSObject.java
+++ b/js/js2/java/JSObject.java
@@ -3,11 +3,12 @@ import java.util.Hashtable;
 
 class JSObject extends JSValue {
     
-    static JSObject JSUndefined = new JSObject("undefined");
+    static JSObject JSUndefined = new JSObject("undefined", null);
     
-    JSObject(String aValue)
+    JSObject(String aValue, JSObject aPrototype)
     {
         value = aValue;
+        prototype = aPrototype;
     }
     
     String print(String indent)
@@ -38,9 +39,17 @@ class JSObject extends JSValue {
     JSDouble toJSDouble(Environment theEnv) {
         return toPrimitive(theEnv, "Number").toJSDouble(theEnv);
     }
-        
-    JSValue getProp(Environment theEnv, JSString id) {
-        return (JSValue)(contents.get(id.s));
+    
+    JSValue getProp(Environment theEnv, JSString id)
+    {
+        Object v = contents.get(id.s);
+        if (v == null)
+            if (prototype == null)
+                return JSUndefined;
+            else
+                return prototype.getProp(theEnv, id);
+        else
+            return (JSValue)v;
     }
         
     JSValue putProp(Environment theEnv, JSString id, JSValue rV) {
@@ -53,4 +62,5 @@ class JSObject extends JSValue {
         
     String value;
     
+    JSObject prototype;
 }
\ No newline at end of file
diff --git a/js/js2/java/NativeFunction.java b/js/js2/java/NativeFunction.java
index 6e838be01cf3..99761a252fb6 100644
--- a/js/js2/java/NativeFunction.java
+++ b/js/js2/java/NativeFunction.java
@@ -2,7 +2,7 @@ class NativeFunction extends JSObject {
     
     NativeFunction(ControlNode aBody)
     {
-        super("Function");
+        super("Function", null);
         body = aBody;
     }
     
@@ -14,7 +14,6 @@ class NativeFunction extends JSObject {
         return theEnv.resultValue;
     }
     
-    
     ControlNode body;
     
 }
\ No newline at end of file
diff --git a/js/js2/java/NativeNumber.java b/js/js2/java/NativeNumber.java
index e08063c14d3f..e5874497089e 100644
--- a/js/js2/java/NativeNumber.java
+++ b/js/js2/java/NativeNumber.java
@@ -1,7 +1,7 @@
 class NativeNumber extends JSObject {
     
     NativeNumber(double p) {
-        super("Number");
+        super("Number", null);
         d = p;
     }