--- parser3/src/main/execute.C	2002/10/31 10:27:57	1.288
+++ parser3/src/main/execute.C	2003/04/07 12:39:32	1.296
@@ -1,11 +1,11 @@
 /** @file
 	Parser: executor part of request class.
 
-	Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
+	Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
 	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */
 
-static const char* IDENT_EXECUTE_C="$Date: 2002/10/31 10:27:57 $";
+static const char* IDENT_EXECUTE_C="$Date: 2003/04/07 12:39:32 $";
 
 #include "pa_opcode.h"
 #include "pa_array.h" 
@@ -123,6 +123,11 @@ void Request::execute(const Array& ops)
 
 	Array_iter i(ops);
 	while(i.has_next()) {
+		if(interrupted())
+			throw Exception("parser.interrupted",
+				0,
+				"execution stopped");
+
 		Operation op;
 		op.cast=i.next();
 #ifdef DEBUG_EXECUTE
@@ -721,48 +726,54 @@ void Request::execute(const Array& ops)
 		case OP_NUM_LT: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result < 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double<b_double);
 				PUSH(value);
 				break;
 			}
 		case OP_NUM_GT: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result > 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double>b_double);
 				PUSH(value);
 				break;
 			}
 		case OP_NUM_LE: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result <= 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double<=b_double);
 				PUSH(value);
 				break;
 			}
 		case OP_NUM_GE: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result >= 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double>=b_double);
 				PUSH(value);
 				break;
 			}
 		case OP_NUM_EQ: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result == 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double==b_double);
 				PUSH(value);
 				break;
 			}
 		case OP_NUM_NE: 
 			{
 				b=POP();  a=POP();
-				double result=a->as_double() - b->as_double();
-				value=NEW VBool(pool(), result != 0.0);
+				volatile double a_double=a->as_double(); 
+				volatile double b_double=b->as_double();
+				value=NEW VBool(pool(), a_double!=b_double);
 				PUSH(value);
 				break;
 			}
@@ -824,14 +835,16 @@ void Request::execute(const Array& ops)
 	}
 }
 
-/// @todo cache|prepare junctions 
+/**
+	@todo cache|prepare junctions
+	@bug ^superbase:method would dynamically call ^base:method if there is any
+*/
 Value *Request::get_element(const String *& remember_name, bool can_call_operator) {
 	const String& name=POP_NAME();  remember_name=&name;
 	Value *ncontext=POP();
 	Value *value=0;
 	if(can_call_operator) {
 		if(Method* method=main_class.get_method(name)) { // looking operator of that name FIRST
-			// as if that method were in self and we have normal dynamic method here
 			Junction& junction=*NEW Junction(pool(), 
 				main_class, method, 0,0,0,0);
 			value=NEW VJunction(junction);
@@ -843,18 +856,26 @@ Value *Request::get_element(const String
 			if(VStateless_class *called_class=ncontext->get_class())
 				if(VStateless_class *read_class=rcontext->get_class())
 					if(read_class->derived_from(*called_class)) // current derived from called
-						if(Value *base_object=get_self()->base_object()) { // doing DYNAMIC call
-							Temp_derived temp_derived(*base_object, 0); // temporarily prevent go-back-down virtual calls
-							value=base_object->get_element(name, base_object, false); // virtual-up lookup starting from parent
-							goto _void;
+						if(Value *base=get_self()->base()) { // doing DYNAMIC call
+							Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
+							value=base->get_element(name, *base, false); // virtual-up lookup starting from parent
+							goto value_ready;
 						}
 	}
 	if(!value)
-		value=ncontext->get_element(name, ncontext, false);
+		value=ncontext->get_element(name, *ncontext, false);
+
+	if(value && wcontext->get_constructing())
+		if(Junction *junction=value->get_junction()) {
+			if(junction->self.get_class()!=ncontext)
+				throw Exception("parser.runtime",
+					&name,
+					"constructor must be declared in class %s", ncontext->get_class()->name_cstr());
+		}
 
-_void:
+value_ready:
 	if(value)
-			value=&process_to_value(*value); // process possible code-junction
+		value=&process_to_value(*value); // process possible code-junction
 	else
 		value=NEW VVoid(pool());
 
@@ -1006,7 +1027,7 @@ void Request::execute_nonvirtual_method(
 
 const String *Request::execute_virtual_method(Value& aself, 
 											  const String& method_name) {
-	if(Value *value=aself.get_element(method_name, &aself, false))
+	if(Value *value=aself.get_element(method_name, aself, false))
 		if(Junction *junction=value->get_junction())
 			if(const Method *method=junction->method) {
 				const String *result;