[Reflect] Add accessor method to get list of instructions from a pack…

…file.

src/reflect/Deserializer.winxed

@@ -32,10 +32,25 @@ class Rosella.Reflect.Deserializer
     function get_bytecode_raw(var bc_seg, int start_offs, int end_offs)
     {
         int bc[] = [];
-        for (int i = start_offs; i < elements(bc_seg) && i < end_offs; i++) {
-            int val = bc_seg[i];
-            bc[i - start_offs] = val;
+
+        if (start_offs > end_offs ||
+            (start_offs == end_offs && start_offs != 0) ||
+            start_offs > elements(bc_seg) || end_offs > elements(bc_seg) ||
+            start_offs < 0 || end_offs < 0)
+            Rosella.Error.invalid(__FUNCTION__, "Cannot get bytecode from offset range [%d, %d]", start_offs, end_offs);
+
+        if (start_offs == 0 && end_offs == 0) {
+            for (int i = start_offs; i < elements(bc_seg); i++) {
+                int val = bc_seg[i];
+                bc[i - start_offs] = val;
+            }
+        } else if (start_offs != end_offs) {
+            for (int i = start_offs; i < elements(bc_seg) && i < end_offs; i++) {
+                int val = bc_seg[i];
+                bc[i - start_offs] = val;
+            }
         }
+
         return bc;
     }
 

src/reflect/Module.winxed

@@ -31,6 +31,7 @@ class Rosella.Reflect.Module
     var classes;            // A list of all classes defined at compile-time
     var namespaces;         // A list of all namespaces defined at compile-time
     var functions_by_ns;    // A hash of functions arranged by namespace
+    var instructions;       // A listing of disassembled opcodes
 
     // Constructor. Take an existing PackfileView
     function Module(var pf)
@@ -153,4 +154,10 @@ class Rosella.Reflect.Module
         self.functions = functions;
         self.functions_by_ns = functions_by_ns;
     }
+
+    function get_instructions()
+    {
+        var d = new Rosella.Reflect.Deserializer();
+        return d.get_instructions(self.pf, 0, 0);
+    }
 }