parser3/src/main/execute.C - diff

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Diff for /parser3/src/main/execute.C between versions 1.243 and 1.283

version 1.243, 2002/08/01 11:26:49	version 1.283, 2002/10/15 10:05:00
Line 5	Line 5
Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
*/	*/

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

#include "pa_opcode.h"	#include "pa_opcode.h"
#include "pa_array.h"	#include "pa_array.h"
Line 44 char *opcode_name[]={	Line 44 char *opcode_name[]={
"GET_CLASS",	"GET_CLASS",
"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", "OP_GET_ELEMENT_OR_JUNCTION_EXPAND",
	"GET_ELEMENT", "GET_ELEMENT__WRITE",
"OBJECT_POOL", "STRING_POOL",	"OBJECT_POOL", "STRING_POOL",
"STORE_PARAM",	"STORE_PARAM",
"PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",	"PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
Line 54 char *opcode_name[]={	Line 55 char *opcode_name[]={
"NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",	"NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
// expression ops: binary	// expression ops: binary
"SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",	"SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
	"BIN_SL", "BIN_SR",
"BIN_AND", "BIN_OR", "BIN_XOR",	"BIN_AND", "BIN_OR", "BIN_XOR",
"LOG_AND", "LOG_OR", "LOG_XOR",	"LOG_AND", "LOG_OR", "LOG_XOR",
"NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",	"NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
Line 111 void debug_dump(Pool& pool, int level, c	Line 113 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Helps preventing evaluation of junctions in outdated context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 161 void Request::execute(const Array& ops)	Line 120 void Request::execute(const Array& ops)
debug_dump(pool(), 0, ops);	debug_dump(pool(), 0, 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;	const String *last_get_element_name=0;

Array_iter i(ops);	Array_iter i(ops);
Line 206 void Request::execute(const Array& ops)	Line 163 void Request::execute(const Array& ops)
// OP_WITH	// OP_WITH
case OP_WITH_ROOT:	case OP_WITH_ROOT:
{	{
PUSH(root);	PUSH(method_frame);
break;	break;
}	}
case OP_WITH_SELF:	case OP_WITH_SELF:
Line 231 void Request::execute(const Array& ops)	Line 188 void Request::execute(const Array& ops)
value=POP();	value=POP();
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, false);
break;	break;
}	}
case OP_CONSTRUCT_EXPR:	case OP_CONSTRUCT_EXPR:
Line 242 void Request::execute(const Array& ops)	Line 199 void Request::execute(const Array& ops)
value=POP();	value=POP();
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(), false);
break;	break;
}	}
case OP_CURLY_CODE__CONSTRUCT:	case OP_CURLY_CODE__CONSTRUCT:
Line 253 void Request::execute(const Array& ops)	Line 210 void Request::execute(const Array& ops)
debug_dump(pool(), 1, *local_ops);	debug_dump(pool(), 1, *local_ops);
#endif	#endif
Junction& j=*NEW Junction(pool(),	Junction& j=*NEW Junction(pool(),
*self, 0, 0,	*self, 0,
root,	method_frame,
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, false);
break;	break;
}	}
case OP_NESTED_CODE:	case OP_NESTED_CODE:
Line 304 void Request::execute(const Array& ops)	Line 260 void Request::execute(const Array& ops)

case OP_GET_ELEMENT_OR_OPERATOR:	case OP_GET_ELEMENT_OR_OPERATOR:
{	{
// maybe they do ^object.method[] call, remember the fact
wcontext->set_somebody_entered_some_object(true);

//_asm int 3;
value=get_element(last_get_element_name, true);	value=get_element(last_get_element_name, true);
PUSH(value);	PUSH(value);
break;	break;
}	}
	case OP_GET_ELEMENT_OR_JUNCTION_EXPAND:
	{
	value=get_element(last_get_element_name, false, true/* the only user */);
	PUSH(value);
	break;
	}
case OP_GET_ELEMENT:	case OP_GET_ELEMENT:
{	{
// maybe they do ^object.method[] call, remember the fact
wcontext->set_somebody_entered_some_object(true);

//_asm int 3;
value=get_element(last_get_element_name, false);	value=get_element(last_get_element_name, false);
PUSH(value);	PUSH(value);
break;	break;
Line 335 void Request::execute(const Array& ops)	Line 289 void Request::execute(const Array& ops)
{	{
const Array local_ops=reinterpret_cast<const Array >(i.next());	const Array local_ops=reinterpret_cast<const Array >(i.next());

PUSH(wcontext);	WContext *saved_wcontext=wcontext;
PUSH((void *)flang);	uchar saved_lang= flang;
flang=String::UL_PASS_APPENDED;	flang=String::UL_PASS_APPENDED;
WWrapper local(pool(), 0 /empty/);	WWrapper local(pool(), 0 /empty/, wcontext);
wcontext=&local;	wcontext=&local;

execute(*local_ops);	execute(*local_ops);

value=&wcontext->result().as_value();	value=&wcontext->result().as_value();
flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));	flang=saved_lang;
wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
PUSH(value);	PUSH(value);
break;	break;
}	}
Line 354 void Request::execute(const Array& ops)	Line 308 void Request::execute(const Array& ops)
{	{
const Array local_ops=reinterpret_cast<const Array >(i.next());	const Array local_ops=reinterpret_cast<const Array >(i.next());

PUSH(wcontext);	WContext *saved_wcontext=wcontext;
WWrapper local(pool(), 0 /empty/);	WWrapper local(pool(), 0 /empty/, wcontext);
wcontext=&local;	wcontext=&local;

execute(*local_ops);	execute(*local_ops);
Line 368 void Request::execute(const Array& ops)	Line 322 void Request::execute(const Array& ops)
value=NEW VString(*string);	value=NEW VString(*string);
else	else
NEW VVoid(pool());	NEW VVoid(pool());
wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
PUSH(value);	PUSH(value);
break;	break;
}	}
Line 400 void Request::execute(const Array& ops)	Line 354 void Request::execute(const Array& ops)
// in .process we would test that field	// in .process we would test that field
// in decision "which wwrapper to use"	// in decision "which wwrapper to use"
Junction& j=*NEW Junction(pool(),	Junction& j=*NEW Junction(pool(),
*self, 0, 0,	*self, 0,
root,	method_frame,
rcontext,	rcontext,
op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,	op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
local_ops);	local_ops);
Line 438 void Request::execute(const Array& ops)	Line 392 void Request::execute(const Array& ops)
#endif	#endif
value=POP();	value=POP();

// info:
// code compiled so that this one's always method-junction,
// not a code-junction
Junction *junction=value->get_junction();	Junction *junction=value->get_junction();
if(!junction)	if(!junction)
throw Exception("parser.runtime",	throw Exception("parser.runtime",
last_get_element_name,	last_get_element_name,
"(%s) not a method or junction, can not call it",	"(%s) not a method or junction, can not call it",
value->type());	value->type());
	/* no check needed, code compiled the way that that's impossible
	// check:
	// that this is method-junction, not a code-junction
	// [disabling these contstructions:]
	// $junction{code}
	// ^junction[]
	if(!junction->method)
	throw Exception("parser.runtime",
	last_get_element_name,
	"(%s) is code junction, can not call it",
	value->type());
	*/

VMethodFrame frame(pool(), last_get_element_name, junction);	VMethodFrame frame(pool(), last_get_element_name, junction, method_frame/caller/);
if(local_ops){ // store param code goes here	if(local_ops){ // store param code goes here
PUSH(&frame); // argument for *STORE_PARAM ops	PUSH(&frame); // argument for *STORE_PARAM ops
execute(*local_ops);	execute(*local_ops);
POP();	POP();
}	}
frame.fill_unspecified_params();	frame.fill_unspecified_params();
PUSH(self);	Value *saved_self=self;
PUSH(root);	VMethodFrame *saved_method_frame=method_frame;
PUSH(rcontext);	Value *saved_rcontext=rcontext;
PUSH(wcontext);	WContext *saved_wcontext=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()) {
Line 482 void Request::execute(const Array& ops)	Line 445 void Request::execute(const Array& ops)
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	self=&frame.junction.self;

// not ^name.method call, name:method call; and
// is context object or class & is it my class or my parent's class and?
VStateless_class *read_class=rcontext->get_class();
if(
!(wcontext->get_somebody_entered_some_object() &&
!wcontext->get_somebody_entered_some_class()) &&
read_class && read_class->is_or_derived_from(*called_class)) // yes
self=rcontext; // dynamic call
else // no, not me or relative of mine (=total stranger)
self=&frame.junction.self; // static call
}

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

Line 504 void Request::execute(const Array& ops)	Line 455 void Request::execute(const Array& ops)

rcontext=wcontext=&frame;	rcontext=wcontext=&frame;
{	{
// take object or class from any wrappers
// and substitute class alias to the class they are called AS
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;
Line 515 void Request::execute(const Array& ops)	Line 462 void Request::execute(const Array& ops)
method.call_type==Method::CT_ANY \|\|	method.call_type==Method::CT_ANY \|\|
method.call_type==call_type) { // allowed call type?	method.call_type==call_type) { // allowed call type?
try {	try {
	method_frame=&frame;
if(method.native_code) { // native code?	if(method.native_code) { // native code?
// 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, execute it
root=&frame;
// 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());
Line 542 void Request::execute(const Array& ops)	Line 486 void Request::execute(const Array& ops)
}	}
StringOrValue result=wcontext->result();	StringOrValue result=wcontext->result();

wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
rcontext=POP();	rcontext=saved_rcontext;
root=POP();	method_frame=saved_method_frame;
self=static_cast<VAliased *>(POP());	self=saved_self;

#ifdef DEBUG_STRING_APPENDS_VS_EXPANDS	#ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
if(const String *s=value->get_string())	if(const String *s=value->get_string())
Line 554 void Request::execute(const Array& ops)	Line 498 void Request::execute(const Array& ops)

if(op.code==OP_CALL__WRITE) {	if(op.code==OP_CALL__WRITE) {
write_assign_lang(result, last_get_element_name);	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	} else { // OP_CALL
PUSH(&result.as_value());	PUSH(&result.as_value());
}	}
Line 699 void Request::execute(const Array& ops)	Line 640 void Request::execute(const Array& ops)
PUSH(value);	PUSH(value);
break;	break;
}	}
	case OP_BIN_SL:
	{
	b=POP(); a=POP();
	value=NEW VInt(pool(),
	a->as_int() <<
	b->as_int());
	PUSH(value);
	break;
	}
	case OP_BIN_SR:
	{
	b=POP(); a=POP();
	value=NEW VInt(pool(),
	a->as_int() >>
	b->as_int());
	PUSH(value);
	break;
	}
case OP_BIN_AND:	case OP_BIN_AND:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VDouble(pool(),	value=NEW VInt(pool(),
a->as_int() &	a->as_int() &
b->as_int());	b->as_int());
PUSH(value);	PUSH(value);
Line 711 void Request::execute(const Array& ops)	Line 670 void Request::execute(const Array& ops)
case OP_BIN_OR:	case OP_BIN_OR:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VDouble(pool(),	value=NEW VInt(pool(),
a->as_int() \|	a->as_int() \|
b->as_int());	b->as_int());
PUSH(value);	PUSH(value);
Line 720 void Request::execute(const Array& ops)	Line 679 void Request::execute(const Array& ops)
case OP_BIN_XOR:	case OP_BIN_XOR:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VDouble(pool(),	value=NEW VInt(pool(),
a->as_int() ^	a->as_int() ^
b->as_int());	b->as_int());
PUSH(value);	PUSH(value);
Line 765 void Request::execute(const Array& ops)	Line 724 void Request::execute(const Array& ops)
case OP_NUM_LT:	case OP_NUM_LT:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() < b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result < 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_NUM_GT:	case OP_NUM_GT:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() > b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result > 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_NUM_LE:	case OP_NUM_LE:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() <= b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result <= 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_NUM_GE:	case OP_NUM_GE:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() >= b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result >= 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_NUM_EQ:	case OP_NUM_EQ:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() == b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result == 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
case OP_NUM_NE:	case OP_NUM_NE:
{	{
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), a->as_double() != b->as_double());	double result=a->as_double() - b->as_double();
	value=NEW VBool(pool(), result != 0.0);
PUSH(value);	PUSH(value);
break;	break;
}	}
Line 848 void Request::execute(const Array& ops)	Line 813 void Request::execute(const Array& ops)
}	}
case OP_IS:	case OP_IS:
{	{
//_asm int 3;
b=POP(); a=POP();	b=POP(); a=POP();
value=NEW VBool(pool(), b->as_string() == a->type());	value=NEW VBool(pool(), a->is(b->as_string().cstr()));
PUSH(value);	PUSH(value);
break;	break;
}	}
Line 864 void Request::execute(const Array& ops)	Line 828 void Request::execute(const Array& ops)
}	}

/// @test cache\|prepare junctions	/// @test cache\|prepare junctions
Value Request::get_element(const String & remember_name, bool can_call_operator) {	Value Request::get_element(const String & remember_name,
	bool can_call_operator, bool should_explode_junction) {
const String& name=POP_NAME(); remember_name=&name;	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) {
if(Method* method=OP.get_method(name)) { // looking operator of that name FIRST	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	// as if that method were in self and we have normal dynamic method here
Junction& junction=*NEW Junction(pool(),	Junction& junction=*NEW Junction(pool(),
*root, self->get_class(), method, 0,0,0,0);	main_class, method, 0,0,0,0);
value=NEW VJunction(junction);	value=NEW VJunction(junction);
}	}
	}
	if(!value) {
	if(!wcontext->get_constructing() // not constructing
	&& wcontext->get_somebody_entered_some_class() ) // ^class:method
	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=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)	if(!value)
value=ncontext->get_element(name);	value=ncontext->get_element(name, ncontext, false);
if(value)
value=&process_to_value(*value); // process possible code-junction	_void:
else	if(value) {
	if(should_explode_junction) // process $junction, but leave $junction.xxx as is
	value=&process_to_value(*value); // process possible code-junction
	} else
value=NEW VVoid(pool());	value=NEW VVoid(pool());

return value;	return value;
Line 905 StringOrValue Request::process(Value& in	Line 886 StringOrValue Request::process(Value& in
debug_printf(pool(), "ja->\n");	debug_printf(pool(), "ja->\n");
#endif	#endif

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

PUSH(self);	Value *saved_self=self;
PUSH(root);	VMethodFrame *saved_method_frame=method_frame;
PUSH(rcontext);	Value *saved_rcontext=rcontext;
PUSH(wcontext);	WContext *saved_wcontext=wcontext;

self=&junction->self;	self=&junction->self;
root=junction->root;	method_frame=junction->method_frame;
rcontext=junction->rcontext;	rcontext=junction->rcontext;

// for expression method params	// for expression method params
Line 926 StringOrValue Request::process(Value& in	Line 907 StringOrValue Request::process(Value& in
if(using_code_frame) {	if(using_code_frame) {
// almost plain wwrapper about junction wcontext,	// almost plain wwrapper about junction wcontext,
// BUT intercepts string writes	// BUT intercepts string writes
VCodeFrame local(pool(), *junction->wcontext);	VCodeFrame local(pool(), *junction->wcontext, junction->wcontext);
wcontext=&local;	wcontext=&local;

// execute it	// execute it
Line 938 StringOrValue Request::process(Value& in	Line 919 StringOrValue Request::process(Value& in
result.set_string(*wcontext->get_string());	result.set_string(*wcontext->get_string());
} else {	} else {
// plain wwrapper	// plain wwrapper
WWrapper local(pool(), 0/empty/);	WWrapper local(pool(), 0/empty/, wcontext);
wcontext=&local;	wcontext=&local;

// execute it	// execute it
Line 947 StringOrValue Request::process(Value& in	Line 928 StringOrValue Request::process(Value& in
result=wcontext->result();	result=wcontext->result();
}	}

wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
rcontext=POP();	rcontext=saved_rcontext;
root=POP();	method_frame=saved_method_frame;
self=static_cast<VAliased *>(POP());	self=saved_self;

#ifdef DEBUG_EXECUTE	#ifdef DEBUG_EXECUTE
debug_printf(pool(), "<-ja returned");	debug_printf(pool(), "<-ja returned");
Line 961 StringOrValue Request::process(Value& in	Line 942 StringOrValue Request::process(Value& in
return result;	return result;
}	}

const String& Request::execute_method(VMethodFrame& amethodFrame, const Method& method) {	const String& Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
PUSH(self);	Value *saved_self=self;
PUSH(root);	VMethodFrame *saved_method_frame=method_frame;
PUSH(rcontext);	Value *saved_rcontext=rcontext;
PUSH(wcontext);	WContext *saved_wcontext=wcontext;

// initialize contexts	// initialize contexts
root=rcontext=self=&amethodFrame;	self=rcontext=wcontext=method_frame=&amethod_frame;
wcontext=&amethodFrame;

// execute!	// execute!
execute(*method.parser_code);	execute(*method.parser_code);
Line 977 const String& Request::execute_method(VM	Line 957 const String& Request::execute_method(VM
// result	// result
const String& result=wcontext->result().as_string();	const String& result=wcontext->result().as_string();

wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
rcontext=POP();	rcontext=saved_rcontext;
root=POP();	method_frame=saved_method_frame;
self=static_cast<VAliased *>(POP());	self=saved_self;

// return	// return
return result;	return result;
Line 989 const String& Request::execute_method(VM	Line 969 const String& Request::execute_method(VM
void Request::execute_method(Value& aself,	void Request::execute_method(Value& aself,
const Method& method, VString *optional_param,	const Method& method, VString *optional_param,
const String **return_string) {	const String **return_string) {
PUSH(self);	Value *saved_self=self;
PUSH(root);	VMethodFrame *saved_method_frame=method_frame;
PUSH(rcontext);	Value *saved_rcontext=rcontext;
PUSH(wcontext);	WContext *saved_wcontext=wcontext;

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

	// prevent non-string writes for better error reporting
	if(return_string)
	wcontext->write(local_frame);

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

// result	// result
const String *result=0;	const String *result=0;
if(return_string) {	if(return_string)
/if(Value result_var_value=wcontext->get_element(*result_var_name))
*return_string=&result_var_value->as_string();
else
return_string=&wcontext->as_string();/
*return_string=&wcontext->result().as_string();	*return_string=&wcontext->result().as_string();
}

wcontext=static_cast<WContext *>(POP());	wcontext=saved_wcontext;
rcontext=POP();	rcontext=saved_rcontext;
root=POP();	method_frame=saved_method_frame;
self=static_cast<VAliased *>(POP());	self=saved_self;
}	}

void Request::execute_nonvirtual_method(VStateless_class& aclass,	void Request::execute_nonvirtual_method(VStateless_class& aclass,
Line 1044 void Request::execute_nonvirtual_method(	Line 1023 void Request::execute_nonvirtual_method(

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, &aself, false))
if(Junction *junction=value->get_junction())	if(Junction *junction=value->get_junction())
if(const Method *method=junction->method) {	if(const Method *method=junction->method) {
const String *result;	const String *result;
Line 1054 const String *Request::execute_virtual_m	Line 1033 const String *Request::execute_virtual_m

return 0;	return 0;
}	}

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Removed from v.1.243
changed lines
	Added in v.1.283