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Diff for /parser3/src/main/execute.C between versions 1.228 and 1.245

version 1.228, 2002/04/15 10:35:22	version 1.245, 2002/08/07 13:24:30
Line 3	Line 3

Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)	Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)

$Id$
*/	*/

	static const char* IDENT_EXECUTE_C="$Date$";

#include "pa_opcode.h"	#include "pa_opcode.h"
#include "pa_array.h"	#include "pa_array.h"
#include "pa_request.h"	#include "pa_request.h"
Line 45 char *opcode_name[]={	Line 45 char *opcode_name[]={
"CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",	"CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
"WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",	"WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
"GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE",	"GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE",
"OBJECT_POOL",	"OBJECT_POOL", "STRING_POOL",
"STRING_POOL",
"GET_METHOD_FRAME",
"STORE_PARAM",	"STORE_PARAM",
"PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", "CALL",	"PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
	"CALL", "CALL__WRITE",

// expression ops: unary	// expression ops: unary
"NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",	"NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
Line 99 void debug_dump(Pool& pool, int level, c	Line 98 void debug_dump(Pool& pool, int level, c
case OP_NESTED_CODE:	case OP_NESTED_CODE:
case OP_OBJECT_POOL:	case OP_OBJECT_POOL:
case OP_STRING_POOL:	case OP_STRING_POOL:
	case OP_CALL:
const Array local_ops=reinterpret_cast<const Array >(i.next());	const Array local_ops=reinterpret_cast<const Array >(i.next());
debug_dump(pool, level+1, *local_ops);	debug_dump(pool, level+1, *local_ops);
}	}
Line 111 void debug_dump(Pool& pool, int level, c	Line 111 void debug_dump(Pool& pool, int level, c
#define POP_NAME() static_cast<Value *>(stack.pop())->as_string()	#define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
#define POP_CODE() static_cast<Array *>(stack.pop())	#define POP_CODE() static_cast<Array *>(stack.pop())

	/**
	Helps preventing evaluation of junctions in outdated context

	To stop situations like this:
	@code
	@main[]
	^method1[]
	^method2[]

	@method1[]
	$junction{
	some code
	}

	@method2[]
	^junction[]
	@endcode

	All Junctions, generated by OP_CURLY_CODE__CONSTRUCT are registered here,
	and on scope exit got cleaned - there Junction::root becomes 0,
	which later in Request::process triggers exception
	*/
	class Auto_junction_cleaner {
	public:
	Auto_junction_cleaner () : junctions(0) {}
	~Auto_junction_cleaner () {
	if(junctions) {
	Array_iter i(*junctions);
	while(i.has_next())
	static_cast<Junction *>(i.next())->change_context(0);
	// someday free junctions
	}
	}
	void register_junction(Pool& apool, Junction& ajunction) {
	if(!junctions)
	junctions=new(apool) Array(apool);
	if(junctions)
	*junctions+=&ajunction;
	}
	private:
	Array *junctions;
	};

void Request::execute(const Array& ops) {	void Request::execute(const Array& ops) {
// _asm int 3;	// _asm int 3;
#ifdef DEBUG_EXECUTE	#ifdef DEBUG_EXECUTE
Line 119 void Request::execute(const Array& ops)	Line 162 void Request::execute(const Array& ops)
debug_printf(pool(), "execution-------------------------\n");	debug_printf(pool(), "execution-------------------------\n");
#endif	#endif

	Auto_junction_cleaner junction_cleaner;
	const String *last_get_element_name=0;

Array_iter i(ops);	Array_iter i(ops);
while(i.has_next()) {	while(i.has_next()) {
Operation op;	Operation op;
Line 141 void Request::execute(const Array& ops)	Line 187 void Request::execute(const Array& ops)
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_CURLY_CODE__STORE_PARAM:
case OP_EXPR_CODE__STORE_PARAM:
{
VMethodFrame frame=static_cast<VMethodFrame >(stack.top_value());
// code
const Array local_ops=reinterpret_cast<const Array >(i.next());
#ifdef DEBUG_EXECUTE
debug_printf(pool(), " (%d)\n", local_ops->size());
debug_dump(pool(), 1, *local_ops);
#endif
// when they evaluate expression parameter,
// the object expression result
// does not need to be written into calling frame
// it must go into any expressions using that parameter
// hence, we zero junction.wcontext here, and later
// in .process we would test that field
// in decision "which wwrapper to use"
Junction& j=*NEW Junction(pool(),
*self, 0, 0,
root,
rcontext,
op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
local_ops);

value=NEW VJunction(j);

// store param
frame->store_param(frame->name(), value);
break;
}
case OP_GET_CLASS:	case OP_GET_CLASS:
{	{
// maybe they do ^class:method[] call, remember the fact	// maybe they do ^class:method[] call, remember the fact
Line 216 void Request::execute(const Array& ops)	Line 232 void Request::execute(const Array& ops)
const String& name=POP_NAME();	const String& name=POP_NAME();
Value *ncontext=POP();	Value *ncontext=POP();
ncontext->put_element(name, value);	ncontext->put_element(name, value);
value->set_name(name);
break;	break;
}	}
case OP_CONSTRUCT_EXPR:	case OP_CONSTRUCT_EXPR:
Line 228 void Request::execute(const Array& ops)	Line 243 void Request::execute(const Array& ops)
const String& name=POP_NAME();	const String& name=POP_NAME();
Value *ncontext=POP();	Value *ncontext=POP();
ncontext->put_element(name, value->as_expr_result());	ncontext->put_element(name, value->as_expr_result());
value->set_name(name);
break;	break;
}	}
case OP_CURLY_CODE__CONSTRUCT:	case OP_CURLY_CODE__CONSTRUCT:
Line 244 void Request::execute(const Array& ops)	Line 258 void Request::execute(const Array& ops)
rcontext,	rcontext,
wcontext,	wcontext,
local_ops);	local_ops);
	junction_cleaner.register_junction(pool(), j);

value=NEW VJunction(j);	value=NEW VJunction(j);
const String& name=POP_NAME();	const String& name=POP_NAME();
Value *ncontext=POP();	Value *ncontext=POP();
ncontext->put_element(name, value);	ncontext->put_element(name, value);
value->set_name(name);
break;	break;
}	}
case OP_NESTED_CODE:	case OP_NESTED_CODE:
Line 265 void Request::execute(const Array& ops)	Line 279 void Request::execute(const Array& ops)
case OP_WRITE_VALUE:	case OP_WRITE_VALUE:
{	{
value=POP();	value=POP();
write_assign_lang(*value);	write_assign_lang(*value, last_get_element_name);

// forget the fact they've entered some ^object.method[].
// see OP_GET_ELEMENT
wcontext->set_somebody_entered_some_object(false);
break;	break;
}	}
case OP_WRITE_EXPR_RESULT:	case OP_WRITE_EXPR_RESULT:
{	{
	value=POP();
	write_no_lang(*value->as_expr_result());

	// must be after write(result) and
// see OP_PREPARE_TO_EXPRESSION	// see OP_PREPARE_TO_EXPRESSION
wcontext->set_in_expression(false);	wcontext->set_in_expression(false);

value=POP();
write_expr_result(*value->as_expr_result());
break;	break;
}	}
case OP_STRING__WRITE:	case OP_STRING__WRITE:
Line 297 void Request::execute(const Array& ops)	Line 308 void Request::execute(const Array& ops)
wcontext->set_somebody_entered_some_object(true);	wcontext->set_somebody_entered_some_object(true);

//_asm int 3;	//_asm int 3;
value=get_element(true);	value=get_element(last_get_element_name, true);
PUSH(value);	PUSH(value);
break;	break;
}	}
Line 307 void Request::execute(const Array& ops)	Line 318 void Request::execute(const Array& ops)
wcontext->set_somebody_entered_some_object(true);	wcontext->set_somebody_entered_some_object(true);

//_asm int 3;	//_asm int 3;
value=get_element(false);	value=get_element(last_get_element_name, false);
PUSH(value);	PUSH(value);
break;	break;
}	}

case OP_GET_ELEMENT__WRITE:	case OP_GET_ELEMENT__WRITE:
{	{
value=get_element(false);	value=get_element(last_get_element_name/not followed by call, not needed really/, false);
write_assign_lang(*value);	write_assign_lang(*value, last_get_element_name);
break;	break;
}	}

Line 363 void Request::execute(const Array& ops)	Line 374 void Request::execute(const Array& ops)
}	}

// CALL	// CALL
case OP_GET_METHOD_FRAME:	case OP_STORE_PARAM:
{	{
value=POP();	value=POP();
	VMethodFrame frame=static_cast<VMethodFrame >(stack.top_value());
// info:	// this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0
// code compiled so that this one's always method-junction,	frame->store_param(value);
// not a code-junction
Junction *junction=value->get_junction();
if(!junction)
throw Exception("parser.runtime",
&value->name(),
"(%s) not a method or junction, can not call it",
value->type());

VMethodFrame frame=NEW VMethodFrame(pool(), value->name(), junction);
PUSH(frame);
break;	break;
}	}
case OP_STORE_PARAM:	case OP_CURLY_CODE__STORE_PARAM:
	case OP_EXPR_CODE__STORE_PARAM:
{	{
value=POP();	// code
	const Array local_ops=reinterpret_cast<const Array >(i.next());
VMethodFrame frame=static_cast<VMethodFrame >(stack.top_value());	VMethodFrame frame=static_cast<VMethodFrame >(stack.top_value());
frame->store_param(frame->name(), value);	#ifdef DEBUG_EXECUTE
	debug_printf(pool(), " (%d)\n", local_ops->size());
	debug_dump(pool(), 1, *local_ops);
	#endif
	// when they evaluate expression parameter,
	// the object expression result
	// does not need to be written into calling frame
	// it must go into any expressions using that parameter
	// hence, we zero junction.wcontext here, and later
	// in .process we would test that field
	// in decision "which wwrapper to use"
	Junction& j=*NEW Junction(pool(),
	*self, 0, 0,
	root,
	rcontext,
	op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
	local_ops);

	value=NEW VJunction(j);

	// store param
	// this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0
	frame->store_param(value);
break;	break;
}	}

Line 402 void Request::execute(const Array& ops)	Line 427 void Request::execute(const Array& ops)
}	}

case OP_CALL:	case OP_CALL:
	case OP_CALL__WRITE:
{	{
	Array local_ops=static_cast<Array >(i.next());
#ifdef DEBUG_EXECUTE	#ifdef DEBUG_EXECUTE
	debug_printf(pool(), " (%d)\n", local_ops->size());
	debug_dump(pool(), 1, *local_ops);

debug_printf(pool(), "->\n");	debug_printf(pool(), "->\n");
#endif	#endif
VMethodFrame frame=static_cast<VMethodFrame >(POP());	value=POP();
frame->fill_unspecified_params();
	// info:
	// code compiled so that this one's always method-junction,
	// not a code-junction
	Junction *junction=value->get_junction();
	if(!junction)
	throw Exception("parser.runtime",
	last_get_element_name,
	"(%s) not a method or junction, can not call it",
	value->type());

	VMethodFrame frame(pool(), last_get_element_name, junction);
	if(local_ops){ // store param code goes here
	PUSH(&frame); // argument for *STORE_PARAM ops
	execute(*local_ops);
	POP();
	}
	frame.fill_unspecified_params();
PUSH(self);	PUSH(self);
PUSH(root);	PUSH(root);
PUSH(rcontext);	PUSH(rcontext);
PUSH(wcontext);	PUSH(wcontext);

VStateless_class *called_class=frame->junction.self.get_class();	VStateless_class *called_class=frame.junction.self.get_class();
if(wcontext->get_constructing()) {	if(wcontext->get_constructing()) {
wcontext->set_constructing(false);	wcontext->set_constructing(false);
if(frame->junction.method->call_type!=Method::CT_STATIC) {	if(frame.junction.method->call_type!=Method::CT_STATIC) {
// this is a constructor call	// this is a constructor call

if(Value *value=called_class->create_new_value(pool())) {	if(Value *value=called_class->create_new_value(pool())) {
Line 424 void Request::execute(const Array& ops)	Line 471 void Request::execute(const Array& ops)
self=value;	self=value;
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&frame->name(),	&frame.name(),
"is not a constructor, system class '%s' can be constructed only implicitly",	"is not a constructor, system class '%s' can be constructed only implicitly",
called_class->name().cstr());	called_class->name().cstr());

frame->write(*self,	frame.write(*self,
String::UL_CLEAN // not used, always an object, not string	String::UL_CLEAN // not used, always an object, not string
);	);
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&frame->name(),	&frame.name(),
"method is static and can not be used as constructor");	"method is static and can not be used as constructor");
} else {	} else {
// this is not constructor call	// this is not constructor call
Line 447 void Request::execute(const Array& ops)	Line 494 void Request::execute(const Array& ops)
read_class && read_class->is_or_derived_from(*called_class)) // yes	read_class && read_class->is_or_derived_from(*called_class)) // yes
self=rcontext; // dynamic call	self=rcontext; // dynamic call
else // no, not me or relative of mine (=total stranger)	else // no, not me or relative of mine (=total stranger)
self=&frame->junction.self; // static call	self=&frame.junction.self; // static call
}	}

frame->set_self(*self);	frame.set_self(*self);

// see OP_PREPARE_TO_EXPRESSION	// see OP_PREPARE_TO_EXPRESSION
frame->set_in_expression(wcontext->get_in_expression());	frame.set_in_expression(wcontext->get_in_expression());

rcontext=wcontext=frame;	rcontext=wcontext=&frame;
{	{
// take object or class from any wrappers	// take object or class from any wrappers
// and substitute class alias to the class they are called AS	// and substitute class alias to the class they are called AS
Temp_alias temp_alias(self->get_aliased(), frame->junction.vclass);	Temp_alias temp_alias(self->get_aliased(), frame.junction.vclass);

const Method& method=*frame->junction.method;	const Method& method=*frame.junction.method;
Method::Call_type call_type=	Method::Call_type call_type=
called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;	called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
if(	if(
Line 471 void Request::execute(const Array& ops)	Line 518 void Request::execute(const Array& ops)
if(method.native_code) { // native code?	if(method.native_code) { // native code?
// root unchanged, so that ^for ^foreach & co may write to locals	// root unchanged, so that ^for ^foreach & co may write to locals
method.check_actual_numbered_params(	method.check_actual_numbered_params(
frame->junction.self,	frame.junction.self,
frame->name(), frame->numbered_params());	frame.name(), frame.numbered_params());
method.native_code(	method.native_code(
*this,	*this,
frame->name(), frame->numbered_params()); // execute it	frame.name(), frame.numbered_params()); // execute it
} else { // parser code	} else { // parser code
root=frame;	root=&frame;
// execute it	// execute it
recoursion_checked_execute(&frame->name(), *method.parser_code);	recoursion_checked_execute(&frame.name(), *method.parser_code);
}	}
} catch(...) {	} catch(...) {
// record it to stack trace	// record it to stack trace
exception_trace.push((void *)&frame->name());	exception_trace.push((void *)&frame.name());
/re/throw;	/re/throw;
}	}
} else	} else
throw Exception("parser.runtime",	throw Exception("parser.runtime",
&frame->name(),	&frame.name(),
"is not allowed to be called %s",	"is not allowed to be called %s",
call_type==Method::CT_STATIC?"statically":"dynamically");	call_type==Method::CT_STATIC?"statically":"dynamically");

}	}
value=&wcontext->result().as_value(); // todo CALL_WRITE & VString removal	StringOrValue result=wcontext->result();

wcontext=static_cast<WContext *>(POP());	wcontext=static_cast<WContext *>(POP());
rcontext=POP();	rcontext=POP();
Line 505 void Request::execute(const Array& ops)	Line 552 void Request::execute(const Array& ops)
wcontext_result_size+=s->used_rows()*sizeof(String::Chunk::Row);	wcontext_result_size+=s->used_rows()*sizeof(String::Chunk::Row);
#endif	#endif

PUSH(value);	if(op.code==OP_CALL__WRITE) {
	write_assign_lang(result, last_get_element_name);
	// forget the fact they've entered some ^object.method[].
	// see OP_GET_ELEMENT
	wcontext->set_somebody_entered_some_object(false);
	} else { // OP_CALL
	PUSH(&result.as_value());
	}

#ifdef DEBUG_EXECUTE	#ifdef DEBUG_EXECUTE
debug_printf(pool(), "<-returned");	debug_printf(pool(), "<-returned");
#endif	#endif
Line 599 void Request::execute(const Array& ops)	Line 654 void Request::execute(const Array& ops)

if(b_double == 0) {	if(b_double == 0) {
const String *problem_source=&b->as_string();	const String *problem_source=&b->as_string();
#ifndef NO_STRING_ORIGIN
if(!problem_source->origin().file)
problem_source=&b->name();
#endif
throw Exception("number.zerodivision",	throw Exception("number.zerodivision",
problem_source,	problem_source,
"Division by zero");	"Division by zero");
Line 621 void Request::execute(const Array& ops)	Line 672 void Request::execute(const Array& ops)

if(b_double == 0) {	if(b_double == 0) {
const String *problem_source=&b->as_string();	const String *problem_source=&b->as_string();
#ifndef NO_STRING_ORIGIN
if(!problem_source->origin().file)
problem_source=&b->name();
#endif
throw Exception("number.zerodivision",	throw Exception("number.zerodivision",
problem_source,	problem_source,
"Modulus by zero");	"Modulus by zero");
Line 643 void Request::execute(const Array& ops)	Line 690 void Request::execute(const Array& ops)

if(b_int == 0) {	if(b_int == 0) {
const String *problem_source=&b->as_string();	const String *problem_source=&b->as_string();
#ifndef NO_STRING_ORIGIN
if(!problem_source->origin().file)
problem_source=&b->name();
#endif
throw Exception("number.zerodivision",	throw Exception("number.zerodivision",
problem_source,	problem_source,
"Division by zero");	"Division by zero");
Line 820 void Request::execute(const Array& ops)	Line 863 void Request::execute(const Array& ops)
}	}
}	}

Value *Request::get_element(bool can_call_operator) {	/// @test cache\|prepare junctions
const String& name=POP_NAME();	Value Request::get_element(const String & remember_name, bool can_call_operator) {
	const String& name=POP_NAME(); remember_name=&name;
Value *ncontext=POP();	Value *ncontext=POP();
Value *value=0;	Value *value=0;
if(can_call_operator)	if(can_call_operator)
Line 834 Value *Request::get_element(bool can_cal	Line 878 Value *Request::get_element(bool can_cal
if(!value)	if(!value)
value=ncontext->get_element(name);	value=ncontext->get_element(name);
if(value)	if(value)
value=&process_to_value(value/ ++ name*/); // process possible code-junction	value=&process_to_value(*value); // process possible code-junction
else {	else
value=NEW VVoid(pool());	value=NEW VVoid(pool());
value->set_name(name);
}

return value;	return value;
}	}
Line 854 Value *Request::get_element(bool can_cal	Line 896 Value *Request::get_element(bool can_cal

using the fact it's either string_ or value_ result requested to speed up checkes	using the fact it's either string_ or value_ result requested to speed up checkes
*/	*/
StringOrValue Request::process(	StringOrValue Request::process(Value& input_value, bool intercept_string) {
Value& input_value,
bool intercept_string,
void (postexecute)(void info), void *postexecute_info) {
StringOrValue result;	StringOrValue result;
Junction *junction=input_value.get_junction();	Junction *junction=input_value.get_junction();
if(junction && junction->code) { // is it a code-junction?	if(junction && junction->code) { // is it a code-junction?
Line 865 StringOrValue Request::process(	Line 904 StringOrValue Request::process(
#ifdef DEBUG_EXECUTE	#ifdef DEBUG_EXECUTE
debug_printf(pool(), "ja->\n");	debug_printf(pool(), "ja->\n");
#endif	#endif

	if(!junction->root)
	throw Exception("parser.runtime",
	0,
	"junction used outside of context");

PUSH(self);	PUSH(self);
PUSH(root);	PUSH(root);
PUSH(rcontext);	PUSH(rcontext);
Line 887 StringOrValue Request::process(	Line 932 StringOrValue Request::process(
// execute it	// execute it
recoursion_checked_execute(0/result_name/, *junction->code);	recoursion_checked_execute(0/result_name/, *junction->code);

// maybe-postexecute something
if(postexecute)
postexecute(postexecute_info);

// CodeFrame soul:	// CodeFrame soul:
// string writes were intercepted	// string writes were intercepted
// returning them as the result of getting code-junction	// returning them as the result of getting code-junction
result=wcontext->result();	result.set_string(*wcontext->get_string());
} else {	} else {
// plain wwrapper	// plain wwrapper
WWrapper local(pool(), 0/empty/);	WWrapper local(pool(), 0/empty/);
Line 903 StringOrValue Request::process(	Line 944 StringOrValue Request::process(
// execute it	// execute it
recoursion_checked_execute(0/result_name/, *junction->code);	recoursion_checked_execute(0/result_name/, *junction->code);

// maybe-postexecute something
if(postexecute)
postexecute(postexecute_info);

result=wcontext->result();	result=wcontext->result();
}	}

Line 924 StringOrValue Request::process(	Line 961 StringOrValue Request::process(
return result;	return result;
}	}

const String *Request::execute_method(Value& aself, const Method& method,	const String& Request::execute_method(VMethodFrame& amethodFrame, const Method& method) {
bool return_cstr) {
PUSH(self);	PUSH(self);
PUSH(root);	PUSH(root);
PUSH(rcontext);	PUSH(rcontext);
PUSH(wcontext);	PUSH(wcontext);

// initialize contexts	// initialize contexts
root=rcontext=self=&aself;	root=rcontext=self=&amethodFrame;
WWrapper local(pool(), &aself);	wcontext=&amethodFrame;
wcontext=&local;

// execute!	// execute!
execute(*method.parser_code);	execute(*method.parser_code);

// result	// result
const String *result=return_cstr ? &wcontext->as_string() : 0;	const String& result=wcontext->result().as_string();

wcontext=static_cast<WContext *>(POP());	wcontext=static_cast<WContext *>(POP());
rcontext=POP();	rcontext=POP();
Line 951 const String *Request::execute_method(Va	Line 986 const String *Request::execute_method(Va
return result;	return result;
}	}

const String& Request::execute_method(VMethodFrame& amethodFrame, const Method& method) {	void Request::execute_method(Value& aself,
	const Method& method, VString *optional_param,
	const String **return_string) {
PUSH(self);	PUSH(self);
PUSH(root);	PUSH(root);
PUSH(rcontext);	PUSH(rcontext);
PUSH(wcontext);	PUSH(wcontext);

// initialize contexts	// initialize contexts
root=rcontext=self=&amethodFrame;	//root=rcontext=self=&aself;
wcontext=&amethodFrame;	self=&aself;
	// WWrapper local(pool(), &aself);
	// wcontext=&local;
	Junction local_junction(pool(), *self, self->get_class(), &method, 0,0,0,0);
	VMethodFrame local_frame(pool(), method.name, local_junction);
	if(optional_param && local_frame.can_store_param()) {
	local_frame.store_param(optional_param);
	local_frame.fill_unspecified_params();
	}
	local_frame.set_self(*self);
	root=rcontext=wcontext=&local_frame;

// execute!	// execute!
execute(*method.parser_code);	execute(*method.parser_code);

// result	// result
const String& result=wcontext->as_string();	const String *result=0;
	if(return_string)
	*return_string=&wcontext->result().as_string();

wcontext=static_cast<WContext *>(POP());	wcontext=static_cast<WContext *>(POP());
rcontext=POP();	rcontext=POP();
root=POP();	root=POP();
self=static_cast<VAliased *>(POP());	self=static_cast<VAliased *>(POP());
	}
// return
return result;	void Request::execute_nonvirtual_method(VStateless_class& aclass,
	const String& method_name, VString *optional_param,
	const String **return_string,
	const Method **return_method) {

	const Method *method=aclass.get_method(method_name);
	if(return_string)
	*return_string=0;
	if(return_method)
	*return_method=method;

	if(method)
	execute_method(aclass, *method, optional_param, return_string);
}	}

const String *Request::execute_virtual_method(Value& aself,	const String *Request::execute_virtual_method(Value& aself,
const String& method_name) {	const String& method_name) {
if(Value *value=aself.get_element(method_name))	if(Value *value=aself.get_element(method_name))
if(Junction *junction=value->get_junction())	if(Junction *junction=value->get_junction())
if(const Method *method=junction->method)	if(const Method *method=junction->method) {
return execute_method(aself, method, true /return_cstr*/);	const String *result;
	execute_method(aself, method, 0/no params*/, &result);
	return result;
	}

return 0;	return 0;
}	}

const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
const String& method_name,
bool return_cstr) {
if(const Method *method=aclass.get_method(method_name))
return execute_method(aclass, *method, return_cstr);

return 0;
}

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Removed from v.1.228
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	Added in v.1.245