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object.ops
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object.ops
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/*
Copyright (C) 2001-2007, The Perl Foundation.
$Id$
object.ops
*/
VERSION = PARROT_VERSION;
=head1 NAME
object.ops
=head1 DESCRIPTION
Parrot's library of object ops
=over 4
=cut
=item B<callmethodcc>(invar PMC, in STR)
Call method $2 with invocant $1 and generate a new return continuation.
The invocant ($1) is used for method lookup. The object is passed as
the first argument in B<set_args>.
Throws a Method_Not_Found_Exception for a non-existent method.
=item B<callmethodcc>(invar PMC, invar PMC)
Like above but use the Sub object $2 as method.
=item B<callmethod>(invar PMC, in STR, invar PMC)
=item B<callmethod>(invar PMC, invar PMC, invar PMC)
Like above, but use continuation $3 instead of creating a new continuation.
=cut
=item B<tailcallmethod>(invar PMC, in STR)
=item B<tailcallmethod>(invar PMC, invar PMC)
Make a tailcall to method $2 with invocant $1.
=cut
op callmethodcc(invar PMC, in STR) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next;
STRING *meth;
object = $1;
meth = $2;
next = expr NEXT();
method_pmc = VTABLE_find_method(interp, object, meth);
if (PMC_IS_NULL(method_pmc)) {
real_exception(interp, next, METH_NOT_FOUND,
"Method '%Ss' not found", meth);
}
interp->current_object = object;
interp->current_cont = NEED_CONTINUATION;
dest = VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
op callmethodcc(invar PMC, invar PMC) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next;
object = $1;
method_pmc = $2;
/* RT#42371 should we check if object.can(method) */
next = expr NEXT();
interp->current_object = object;
interp->current_cont = NEED_CONTINUATION;
dest = VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
op callmethod(invar PMC, in STR, invar PMC) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next;
STRING *meth;
object = $1;
meth = $2;
next = expr NEXT();
method_pmc = VTABLE_find_method(interp, object, meth);
if (PMC_IS_NULL(method_pmc)) {
real_exception(interp, next, METH_NOT_FOUND,
"Method '%Ss' not found", meth);
}
interp->current_object = object;
interp->current_cont = $3;
dest = (opcode_t *)VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
op callmethod(invar PMC, invar PMC, invar PMC) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next;
object = $1;
method_pmc = $2;
next = expr NEXT();
interp->current_object = object;
interp->current_cont = $3;
dest = (opcode_t *)VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
op tailcallmethod(invar PMC, in STR) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next = expr NEXT();
STRING *meth;
object = $1;
meth = $2;
method_pmc = VTABLE_find_method(interp, object, meth);
if (PMC_IS_NULL(method_pmc)) {
real_exception(interp, next, METH_NOT_FOUND,
"Method '%Ss' not found", meth);
}
interp->current_cont = CONTEXT(interp->ctx)->current_cont;
PObj_get_FLAGS(interp->current_cont) |= SUB_FLAG_TAILCALL;
interp->current_object = object;
dest = (opcode_t *)VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
op tailcallmethod(invar PMC, invar PMC) :object_base {
opcode_t *dest;
PMC *method_pmc, *object;
opcode_t *next = expr NEXT();
object = $1;
method_pmc = $2;
interp->current_cont = CONTEXT(interp->ctx)->current_cont;
PObj_get_FLAGS(interp->current_cont) |= SUB_FLAG_TAILCALL;
interp->current_object = object;
dest = (opcode_t *)VTABLE_invoke(interp, method_pmc, next);
goto ADDRESS(dest);
}
=item B<addmethod>(invar PMC, in STR, invar PMC)
Adds $3 as a method named $2 to $1.
=cut
inline op addmethod(invar PMC, in STR, invar PMC) :object_classes {
VTABLE_add_method(interp, $1, $2, $3);
goto NEXT();
}
=item B<can>(out INT, invar PMC, in STR)
Sets result $1 to the result of the "can" vtable function for PMC $2,
given method $3.
=cut
inline op can(out INT, invar PMC, in STR) :object_base {
$1 = $2->vtable->can(interp, $2, $3);
goto NEXT();
}
=item B<does>(out INT, invar PMC, in STR)
Sets result $1 to the result of the "does" vtable function for PMC $2,
given interface $3.
See L<tools/build/pmc2c.pl> for a list of available interfaces.
inline op does(out INT, invar PMC, in STR) :object_base {
$1 = $3 ? $2->vtable->does(interp, $2, $3) : 0;
goto NEXT();
}
=item B<isa>(out INT, invar PMC, in STR)
=item B<isa>(out INT, invar PMC, in PMC)
Sets result $1 to the result of the "isa" vtable function for PMC $2,
given class $3.
=cut
inline op isa(out INT, invar PMC, in STR) :object_base {
$1 = $3 ? $2->vtable->isa(interp, $2, $3) : 0;
goto NEXT();
}
inline op isa(out INT, invar PMC, in PMC) :object_base {
$1 = $3 ? $2->vtable->isa_pmc(interp, $2, $3) : 0;
goto NEXT();
}
###############################################################################
=item B<newclass>(out PMC, in STR)
Create a new Parrot-style class, named $2, and puts the new PMC for it
into $1.
=item B<newclass>(out PMC, in PMC)
Create a new Parrot-style class, with the name given in $2 as a key,
namespace, or string PMC.
=cut
inline op newclass(out PMC, in STR) :object_classes {
PMC *name = pmc_new(interp, enum_class_String);
VTABLE_set_string_native(interp, name, $2);
$1 = pmc_new_init(interp, enum_class_Class, name);
goto NEXT();
}
inline op newclass(out PMC, in PMC) :object_classes {
$1 = pmc_new_init(interp, enum_class_Class, $2);
goto NEXT();
}
=item B<subclass>(out PMC, in PMC)
=item B<subclass>(out PMC, in PMC, in STR)
=item B<subclass>(out PMC, in PMC, in PMC)
Create a new class, put in $1, that is a subclass of $2. $3, if available
and not null, is the name of the new class--if not, the subclass is an
anonymous subclass.
=cut
inline op subclass(out PMC, in PMC) :object_classes {
PMC *parent_class = Parrot_oo_get_class(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", VTABLE_get_string(interp, $2));
}
$1 = pmc_new(interp, enum_class_Class);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
inline op subclass(out PMC, in PMC, in STR) :object_classes {
PMC *parent_class = Parrot_oo_get_class(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", VTABLE_get_string(interp, $2));
}
$1 = Parrot_oo_newclass_from_str(interp, $3);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
inline op subclass(out PMC, in PMC, in PMC) :object_classes {
PMC *parent_class = Parrot_oo_get_class(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", VTABLE_get_string(interp, $2));
}
$1 = pmc_new_init(interp, enum_class_Class, $3);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
=item B<subclass>(out PMC, in STR)
=item B<subclass>(out PMC, in STR, in STR)
=item B<subclass>(out PMC, in STR, in PMC)
Create a new class, put in $1, that is a subclass of the class named $2.
$3, if available and not null, is the name of the new class--if not, the
subclass is an anonymous subclass.
=cut
op subclass(out PMC, in STR) :object_classes {
PMC *parent_class = Parrot_oo_get_class_str(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", $2);
}
$1 = pmc_new(interp, enum_class_Class);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
op subclass(out PMC, in STR, in STR) :object_classes {
PMC *parent_class = Parrot_oo_get_class_str(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", $2);
}
$1 = Parrot_oo_newclass_from_str(interp, $3);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
op subclass(out PMC, in STR, in PMC) :object_classes {
PMC *parent_class = Parrot_oo_get_class_str(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(parent_class)) {
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", $2);
}
$1 = pmc_new_init(interp, enum_class_Class, $3);
VTABLE_add_parent(interp, $1, parent_class);
goto ADDRESS(next);
}
###############################################################################
=item B<getclass>(out PMC, in STR)
=item B<getclass>(out PMC, in PMC)
Find the PMC for a class, by name. Deprecated - works with the old class
system.
=cut
inline op getclass(out PMC, in STR) :object_classes {
PMC *_class = Parrot_class_lookup(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(_class)) {
char *class_name = string_to_cstring(interp, $2);
real_exception(interp, next, NO_CLASS, "Class '%s' doesn't exist",
class_name);
}
else
$1 = _class;
goto ADDRESS(next);
/* real_exception(interp, NULL, UNIMPLEMENTED,
"The 'getclass' opcode has been deprecated, use 'get_class'. See RT #47972.");*/
}
inline op getclass(out PMC, in PMC) :object_classes {
PMC *_class = Parrot_class_lookup_p(interp, $2);
opcode_t *next = expr NEXT();
if (PMC_IS_NULL(_class)) {
STRING *name = readable_name(interp, $2);
real_exception(interp, next, NO_CLASS,
"Class '%Ss' doesn't exist", name);
}
else
$1 = _class;
goto ADDRESS(next);
/* real_exception(interp, NULL, UNIMPLEMENTED,
"The 'getclass' opcode has been deprecated, use 'get_class'. See RT #47972.");*/
}
###############################################################################
=item B<get_class>(out PMC, in STR)
=item B<get_class>(out PMC, in PMC)
Find the PMC for a class, by string name or by key.
=cut
inline op get_class(out PMC, in STR) :object_classes {
$1 = Parrot_oo_get_class_str(interp, $2);
goto NEXT();
}
inline op get_class(out PMC, in PMC) :object_classes {
$1 = Parrot_oo_get_class(interp, $2);
goto NEXT();
}
###############################################################################
=item B<class>(out PMC, invar PMC)
Get the class PMC for the object in $2 and put it in $1.
=cut
inline op class(out PMC, invar PMC) :object_classes {
$1 = VTABLE_get_class(interp, $2);
goto NEXT();
}
##################################################
=item B<addparent>(invar PMC, invar PMC)
Add class $2 to the list of parent classes for $1.
=cut
inline op addparent(invar PMC, invar PMC) :object_classes {
VTABLE_add_parent(interp, $1, $2);
goto NEXT();
}
=item B<removeparent>(invar PMC, invar PMC)
Remove class $2 from class $1's list of parents.
=cut
inline op removeparent(invar PMC, invar PMC) :object_classes {
Parrot_remove_parent(interp, $2, $1);
goto NEXT();
}
=item B<addrole>(invar PMC, invar PMC)
Compose the role $2 into $1.
=cut
inline op addrole(invar PMC, invar PMC) :object_classes {
VTABLE_add_role(interp, $1, $2);
goto NEXT();
}
=item B<addattribute>(invar PMC, in STR)
Add the attribute named $2 to the class $1.
=cut
inline op addattribute(invar PMC, in STR) :object_classes {
STRING *class_name = string_from_literal(interp, "Class");
STRING *pclass_name = string_from_literal(interp, "ParrotClass");
if (VTABLE_isa(interp, $1, class_name))
VTABLE_add_attribute(interp, $1, $2, PMCNULL);
else if (VTABLE_isa(interp, $1, pclass_name))
Parrot_add_attribute(interp, $1, $2);
else
real_exception(interp, NULL, INVALID_OPERATION,
"Cannot add attribute to non-class");
goto NEXT();
}
=item B<removeattribute>(invar PMC, in STR) B<(unimplemented)>
=item B<removeattribute>(invar PMC, in INT) B<(unimplemented)>
Remove attribute $2 from class $1, specified either by name or offset.
=cut
op removeattribute(invar PMC, in STR) {
real_exception(interp, NULL, UNIMPLEMENTED, "removeattribute is not implemented");
}
op removeattribute(invar PMC, in INT) {
real_exception(interp, NULL, UNIMPLEMENTED, "removeattribute is not implemented");
}
=item B<getattribute>(out PMC, invar PMC, in INT)
=item B<getattribute>(out PMC, invar PMC, in STR)
Get the attribute $3 from object $2 and put the result in $1.
=item B<getattribute>(out PMC, invar PMC, in PMC, in STR)
Get the attribute $4 from the parent $3 of object $2 and put the
result in $1. (This is useful for storing data for a parent class
attribute that is overridden in a child class.) The parent $3 is a
class name, namespace, or key PMC.
=cut
inline op getattribute(out PMC, invar PMC, in INT) :object_classes {
real_exception(interp, NULL, UNIMPLEMENTED,
"Integer access to attributes has been deprecated, "
"use named attribute access instead. See RT #48729");
}
inline op getattribute(out PMC, invar PMC, in STR) :object_classes {
$1 = VTABLE_get_attr_str(interp, $2, $3);
goto NEXT();
}
inline op getattribute(out PMC, invar PMC, in PMC, in STR) :object_classes {
$1 = VTABLE_get_attr_keyed(interp, $2, $3, $4);
goto NEXT();
}
=item B<setattribute>(invar PMC, in INT, invar PMC)
=item B<setattribute>(invar PMC, in STR, invar PMC)
Set attribute $2 of object $1 to $3.
=item B<setattribute>(invar PMC, in PMC, in STR, invar PMC)
Set attribute $3 of the parent $2 of object $1 to $4. (This is useful
for storing data for a parent class attribute that is overridden in a
child class.) The parent $2 is a class name, namespace, or key PMC.
=cut
inline op setattribute(invar PMC, in INT, invar PMC) :object_classes {
real_exception(interp, NULL, UNIMPLEMENTED,
"Integer access to attributes has been deprecated, "
"use named attribute access instead. See RT #48729");
}
inline op setattribute(invar PMC, in STR, invar PMC) :object_classes {
VTABLE_set_attr_str(interp, $1, $2, $3);
goto NEXT();
}
inline op setattribute(invar PMC, in PMC, in STR, invar PMC) :object_classes {
VTABLE_set_attr_keyed(interp, $1, $2, $3, $4);
goto NEXT();
}
=item B<classoffset>(out INT, invar PMC, in STR)
Returns the offset of the first attribute for class $3 in object $2.
Throws an exception if $3 isn't in $2's hierarchy.
=cut
op classoffset(out INT, invar PMC, in STR) :object_classes {
real_exception(interp, NULL, UNIMPLEMENTED,
"The 'classoffset' opcode has been deprecated, "
"use named attribute access instead. See RT #48727");
}
###############################################################################
=item B<inspect>(out PMC, in PMC)
Sets $1 to a PMC hash of all introspection data available for $2, keyed on
name.
=item B<inspect>(out PMC, in PMC, in STR)
Sets $1 to a PMC Hash, Array, String, Integer, or Number value with
introspection information corresponding to the requested string name.
=cut
inline op inspect(out PMC, in PMC) :object_classes {
$1 = VTABLE_inspect(interp, $2);
goto NEXT();
}
inline op inspect(out PMC, in PMC, in STR) :object_classes {
$1 = VTABLE_inspect_str(interp, $2, $3);
goto NEXT();
}
=back
=head1 COPYRIGHT
Copyright (C) 2001-2007, The Perl Foundation.
=head1 LICENSE
This program is free software. It is subject to the same license
as the Parrot interpreter itself.
=cut
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4:
*/