2003/12/03 06:18:13

[org.ibex.core.git] / src / org / xwt / js / Interpreter.java

diff --git a/src/org/xwt/js/Interpreter.java b/src/org/xwt/js/Interpreter.java
index fe118e5..df802e2 100644 (file)
--- a/src/org/xwt/js/Interpreter.java
+++ b/src/org/xwt/js/Interpreter.java
@@ -32,7 +32,7 @@ class Interpreter implements ByteCodes, Tokens {
     }
     
     /** this is the only synchronization point we need in order to be threadsafe */
-    synchronized Object resume() {
+    synchronized Object resume() throws JSExn {
         Thread t = Thread.currentThread();
         Interpreter old = (Interpreter)threadToInterpreter.get(t);
         threadToInterpreter.put(t, this);
@@ -167,7 +167,7 @@ class Interpreter implements ByteCodes, Tokens {
                                 Trap t = ts.t.next;
                                 while (t != null && t.f.numFormalArgs == 0) t = t.next;
                                 if (t == null) {
-                                    ((JS)ts.t.trapee).put(t.name, ts.val);
+                                    ((JS)ts.t.trapee).put(ts.t.name, ts.val);
                                     if (pausecount > initialPauseCount) { pc++; return null; }   // we were paused
                                 } else {
                                     stack.push(o);
@@ -203,7 +203,7 @@ class Interpreter implements ByteCodes, Tokens {
                     throw je("tried to assign \"" + (val==null?"(null)":val.toString()) + "\" to the null key");
                 Trap t = null;
                 if (target instanceof JS) {
-                    t = ((JS)target).getTrap(val);
+                    t = ((JS)target).getTrap(key);
                     while (t != null && t.f.numFormalArgs == 0) t = t.next;
                 } else if (target instanceof Trap.TrapScope && key.equals("cascade")) {
                     Trap.TrapScope ts = (Trap.TrapScope)target;
@@ -241,7 +241,7 @@ class Interpreter implements ByteCodes, Tokens {
                 }
                 Object ret = null;
                 if (v == null) throw je("tried to get the null key from " + o);
-                if (o == null) throw je("tried to get property \"" + v + "\" from the null value @" + pc + "\n" + f.dump());
+                if (o == null) throw je("tried to get property \"" + v + "\" from the null object");
                 if (o instanceof String || o instanceof Number || o instanceof Boolean) {
                     ret = getFromPrimitive(o,v);
                     stack.push(ret);
@@ -285,6 +285,10 @@ class Interpreter implements ByteCodes, Tokens {
                     if (object == JS.METHOD) {
                         method = stack.pop();
                         object = stack.pop();
+                    } else if (object == null) {
+                        Object name = stack.pop();
+                        stack.pop();
+                        throw new JSExn("function '"+name+"' not found");
                     } else {
                         stack.pop();
                         stack.pop();
@@ -523,7 +527,7 @@ class Interpreter implements ByteCodes, Tokens {
 
     // Operations on Primitives //////////////////////////////////////////////////////////////////////
 
-    static Object callMethodOnPrimitive(Object o, Object method, Object arg0, Object arg1, Object arg2, Object[] rest, int alength) {
+    static Object callMethodOnPrimitive(Object o, Object method, Object arg0, Object arg1, Object arg2, Object[] rest, int alength) throws JSExn {
         if (o instanceof Number) {
             //#switch(method)
             case "toFixed": throw new JSExn("toFixed() not implemented");
@@ -612,7 +616,7 @@ class Interpreter implements ByteCodes, Tokens {
         throw new JSExn("Attempted to call non-existent method: " + method);
     }
     
-    static Object getFromPrimitive(Object o, Object key) {
+    static Object getFromPrimitive(Object o, Object key) throws JSExn {
         boolean returnJS = false;
         if (o instanceof Boolean) {
             throw new JSExn("cannot call methods on Booleans");
@@ -643,14 +647,14 @@ class Interpreter implements ByteCodes, Tokens {
             case "toLowerCase": returnJS = true; break; 
             case "toUpperCase": returnJS = true; break; 
             case "toString": returnJS = true; break; 
-            case "substr": returnJS = true; break; 
-            //#end
+            case "substr": returnJS = true; break;  
+           //#end
         }
         if (returnJS) {
             final Object target = o;
             final String method = key.toString();
             return new JS() {
-                    public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) {
+                    public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
                         if (nargs > 2) throw new JSExn("cannot call that method with that many arguments");
                         return callMethodOnPrimitive(target, method, a0, a1, a2, rest, nargs);
                     }
@@ -663,7 +667,7 @@ class Interpreter implements ByteCodes, Tokens {
         private Object method;
         JS obj;
         public Stub(JS obj, Object method) { this.obj = obj; this.method = method; }
-        public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) {
+        public Object call(Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
             return ((JS)obj).callMethod(method, a0, a1, a2, rest, nargs);
         }
     }