This removes a limitation on the number of port types, simplifies the
API, and removes a central point of coordination.
* libguile/ports-internal.h (struct scm_t_port_type): Rename from
scm_t_ptob_descriptor, now that it's private. Add GOOPS class
fields.
(struct scm_t_port): Rename from struct scm_port, especially
considering that deprecated.h redefines scm_port using the
preprocessor :(.
* libguile/ports.h: Add definitions of SCM_PORT and SCM_PORT_TYPE,
though the scm_t_port and scm_t_port_type types are incomplete.
(SCM_TC2PTOBNUM, SCM_PTOBNUM, SCM_PTOBNAME): Remove, as there are no
more typecodes for port types.
(scm_c_num_port_types, scm_c_port_type_ref, scm_c_port_type_add_x):
Remove.
(scm_make_port_type): Return a scm_t_port_type*. All methods adapted
to take a scm_t_port_type* instead of a ptobnum.
(scm_c_make_port_with_encoding, scm_c_make_port): Take a port type
pointer instead of a tag.
(scm_new_port_table_entry): Remove; not useful.
* libguile/ports.c: Remove things related to the port kind table. Adapt
uses of SCM_PORT_DESCRIPTOR / scm_t_ptob_descriptor to use
SCM_PORT_TYPE and scm_t_port_type.
* libguile/deprecated.c:
* libguile/deprecated.h:
* libguile/filesys.c:
* libguile/fports.c:
* libguile/fports.h:
* libguile/print.c:
* libguile/r6rs-ports.c:
* libguile/strports.c:
* libguile/strports.h:
* libguile/tags.h:
* libguile/vports.c:
* test-suite/standalone/test-scm-c-read.c: Adapt to change.
* libguile/goops.c (scm_class_of, make_port_classes)
(scm_make_port_classes, create_port_classes): Adapt to store the
classes in the ptob.
* libguile/goops.h (SCM_VTABLE_FLAG_GOOPS_STATIC): Reserve the fourth
GOOPS flag to indicate that a class has static slot allocation.
* libguile/goops.c (scm_init_goops_builtins): Define
vtable-flag-goops-static for goops.scm.
* module/oop/goops.scm (class-has-statically-allocated-slots?): New
helper.
(build-slots-list): Instead of the ad-hoc checks for <class> or
<slot>, use the new helper.
(initialize): Accept #:static-slot-allocation? keyword.
* module/system/foreign-object.scm (make-foreign-object-type): Declare
foreign object classes as having static slot allocation.
* test-suite/tests/goops.test ("static slot allocation"): Add tests.
* libguile/goops.h (SCM_VTABLE_FLAG_GOOPS_SLOT): Allocate another vtable
flag to indicate that instances of this vtable are slots.
* libguile/goops.c (scm_init_goops_builtins): Export
vtable-flag-goops-slot to Scheme.
* module/oop/goops.scm (<slot>, slot?, make-standard-class, initialize):
Arrange for <slot> classes to have the vtable-flag-goops.slot.
(build-slots-list): Ensure that <slot> slots are statically laid out.
* module/oop/goops.scm (fold-class-slots): Change format to use proper
slot specifications.
(fold-slot-slots): Flesh out with all needed slots.
(<class>): Update cons-layout to deal with new fold-class-slots form.
Don't create slots; we do that later.
(is-a?, get-keyword, *unbound, unbound?, %allocate-instance): Move
definitions up.
(<slot>, slot?): New definitions.
(slot-definition-name, slot-definition-allocation)
(slot-definition-init-keyword, slot-definition-init-form)
(slot-definition-init-value, slot-definition-init-thunk)
(slot-definition-options, slot-definition-getter)
(slot-definition-setter, slot-definition-accessor)
(slot-definition-slot-ref, slot-definition-slot-set!)
(slot-definition-index, slot-definition-size): New definitions as
accessors on <slot> objects.
(class-slot-definition): Adapt to class-slots change.
(direct-slot-definition-class, make-slot): New definitions.
(make): Define a boot version that can allocate <slot> instances.
(compute-direct-slot-definition)
(compute-direct-slot-definition-initargs)
(effective-slot-definition-class, compute-effective-slot-definition):
New definitions.
(build-slots-list): Adapt to slots being <slot> objects.
(compute-get-n-set): New boot definition.
(allocate-slots): New definition. Replaces
compute-getters-n-setters.
(%compute-layout, %prep-layout): Adapt to changes.
(make-standard-class): Make <slot> objects for direct-slots, and
handle the allocate-slots protocol.
(<foreign-slot>): Inherit from <slot>.
(get-slot-value-using-name, set-slot-value-using-name!)
(test-slot-existence): Adapt to using slot definition objects.
(make-class): Allow slot specs or <slot> objects as the `slots'
argument.
(write): New method on <slot>.
(class-slot-ref, class-slot-set!): Reimplement.
(compute-slot-accessors, compute-getter-method)
(compute-setter-method): Adapt to changes.
(compute-getters-n-setters): Remove. Yay!
(compute-get-n-set): Adapt to use effective slot definitions instead
of the getters-n-setters for #:class / #:each-subclass allocation.
(%initialize-object): Adapt.
(initialize): New method for <slot>. Adapt method for <class>.
* module/oop/goops/active-slot.scm (compute-get-n-set):
* module/oop/goops/composite-slot.scm (compute-propagated-get-n-set):
Use slot-definition-options to access options of slot.
* test-suite/tests/goops.test ("bad init-thunk"): Fix to be a "pass-if"
instead of an "expect-fail".
* libguile/goops.c (SCM_GOOPS_UNBOUND, SCM_GOOPS_UNBOUNDP): Remove
internal macros.
(scm_make_unbound, scm_unbound_p): Remove internal functions.
(scm_sys_clear_fields_x): Add "unbound" parameter, for the init
value.
* module/oop/goops.scm (*unbound*): Define in Scheme as a simple
heap-allocated value.
(unbound?): New definition.
(%allocate-instance): Pass *unbound* to %clear-fields!.
(make-class, slot-definition-init-value)
(slot-definition-init-form, make-closure-variable): Use *unbound*
instead of (make-unbound), which is now gone.
* module/oop/goops/active-slot.scm (compute-get-n-set): Use *unbound*
instead of make-unbound. This module uses the GOOPS internals module;
perhaps we should export make-unbound or something...
* module/oop/goops/save.scm (make-unbound): Export our own make-unbound
definition, for use by residualized save code.
* module/language/ecmascript/base.scm (<undefined>, *undefined*): Use a
unique object kind and instance for the undefined value.
* libguile/vm.c (scm_i_vm_mark_stack): Fill the stack with
SCM_UNSPECIFIED instead of SCM_UNBOUND.
* libguile/deprecated.h:
* libguile/goops.c:
* libguile/goops.h:
* libguile/deprecated.c (scm_slot_ref_using_class):
(scm_slot_set_using_class_x):
(scm_slot_bound_using_class_p):
(scm_slot_exists_using_class_p): Deprecate.
* module/oop/goops.scm (slot-ref-using-class, slot-set-using-class!)
(slot-bound-using-class?, slot-exists-using-class?): Deprecate.
Change to check that `class' is indeed the class of `obj', as
required, and then dispatch to slot-ref et al.
* libguile/goops.h: Remove unimplemented declarations of
scm_make_next_method, scm_sys_invalidate_method_cache_x, and
stklos_version.
(scm_sys_invalidate_class_x): Remove helper definition. This was
exported in the past but shouldn't have been.
* libguile/goops.c (scm_sys_make_vtable_vtable): Rename from
scm_sys_make_root_class, and don't do anything about flags.
(scm_sys_bless_applicable_struct_vtables_x, scm_class_p)
(scm_sys_invalidate_class_x): Remove; we do these in Scheme now.
(scm_init_goops_builtins): Define Scheme values for vtable flags.
* module/oop/goops.scm (vtable-flag-goops-metaclass)
(class-add-flags!, class-clear-flags!, class-has-flags?)
(class?, instance?): New definitions.
(<class>): Add GOOPS metaclass flags from Scheme.
(<applicable-struct-class>, <applicable-struct-with-setter-class>):
Add flags from Scheme.
(make, initialize): Add class flags as appropriate.
(class-redefinition): Clear the "valid" flag on the old class.
(check-slot-args): Use instance? instead of a CPL check.
* libguile/goops.c (scm_class_of): Access "redefined" slot by name in
the case where we need to change the class of an instance.
(scm_sys_goops_early_init): Move up capture of class-precedence-list
so SCM_SUBCLASSP can use it.
* libguile/goops.h (SCM_CLASS_CLASS_LAYOUT, scm_si_redefined)
(scm_si_direct_supers, scm_si_direct_slots, scm_si_direct_subclasses)
(scm_si_direct_methods, scm_si_cpl scm_si_slots)
(scm_si_getters_n_setters, SCM_N_CLASS_SLOTS, SCM_OBJ_CLASS_REDEF):
Remove. Now C code has no special knowledge about the layout of
GOOPS classes.
(SCM_SUBCLASSP): Use scm_class_precedence_list to get CPL.
(SCM_INST, SCM_ACCESSORS_OF): Remove unused macros that were
undocumented and nonsensical.
* libguile/goops.c: Move captured keywords and symbols up to the top.
(scm_i_inherit_applicable): Dispatch to Scheme.
(scm_sys_goops_early_init): Capture inherit-applicable!.
* module/oop/goops.scm (inherit-applicable!): Scheme implementation.
* libguile/goops.c (scm_sys_clear_fields_x): New function.
(scm_sys_allocate_instance): Remove. It was available to C but not to
Scheme and it's really internal.
* libguile/goops.h: Remove scm_sys_allocate_instance.
* module/oop/goops.scm (%allocate-instance): Implement in Scheme, using
allocate-struct and %clear-fields!.
(make, shallow-clone, deep-clone, allocate-instance): Adapt to
%allocate-instance not taking an initargs argument.
* module/oop/goops.scm (fold-<class>-slots): The first "reserved" slot
is actually for instance sizes, used by the "simple struct"
mechanism. Reuse this field for GOOPS's "nfields".
(make-standard-class, <class>, initialize): Adapt order of field
initializations.
* libguile/goops.h (SCM_CLASS_CLASS_LAYOUT, SCM_N_CLASS_SLOTS)
* libguile/goops.c (scm_sys_allocate_instance): Adapt.
* libguile/goops.c (scm_sys_make_root_class): Just make the
vtable-vtable, and leave initialization to Scheme.
* libguile/struct.c (scm_i_make_vtable_vtable): Change to take a full
list of fields, not just the extra fields.
(scm_init_struct): Adapt to scm_i_make_vtable_vtable change.
* module/oop/goops.scm (<class>): Compute layout for <class>, and
initialize <class> from here.
* libguile/goops.h:
* libguile/goops.c (scm_sys_initialize_object): Remove C interface.
This function was only really useful as part of a GOOPS initialize
method but was not exported from the goops module.
* module/oop/goops.scm (get-keyword, %initialize-object): Implement in
Scheme.
* libguile/goops.h (scm_c_extend_primitive_generic): Remove public
interface. This was introduced in 2003 with the "extended" generics
but never documented, unused as far as I can tell, and is better
accessed from Scheme.
* libguile/goops.c: Remove support for scm_c_extend_primitive_generic.
Simplify capture of change-class.
* libguile/goops.c: Remove unused #includes.
(make_class_name): New helper, replaces unsafe use of sprintf.
(scm_make_extended_class): Rewrite to call scm_make_standard_class
directly.
(scm_make_port_classes): Rewrite to use scm_make_standard_class, and
no need to patch the CPL any more.
* libguile/goops.h (SCM_CLASS_CLASS_LAYOUT, SCM_INSTANCE_HASH)
(SCM_SET_HASHSET):
* libguile/goops.c (prep_hashsets, scm_sys_make_root_class,
scm_sys_init_layout_x):
* module/oop/goops.scm (build-<class>-slots): Remove hashsets from
classes. We haven't implemented hashed dispatch since Guile 1.8, and
it's not clear that the particular formulation of dispatch is a good
idea.
* libguile/goops.c (scm_sys_set_object_setter_x): Remove. Instead, we
use slot-set! of 'setter.
(scm_i_define_class_for_vtable): Move lower in the file, and fold in
scm_make_extended_class_from_symbol and make_class_from_symbol.
Properly handle applicable structs with setters.
(scm_class_applicable_struct_with_setter_class): New private capture.
(scm_sys_bless_applicable_struct_vtables_x): Rename to take two
arguments, and bless the second argument as an applicable struct with
setter vtable.
(scm_sys_goops_early_init): Capture setter classes.
* libguile/deprecated.c (SPEC_OF, CPL_OF): Access slots by name, not by
index.
(applicablep, more_specificp): Adapt to use CPL_OF.
(scm_find_method): Access "methods" slot by name.
* libguile/procs.c (scm_setter): Remove special case for generics; if
it's a setter, it will be a normal applicable struct.
* module/oop/goops.scm (<applicable-struct-with-setter-class>)
(<applicable-struct-with-setter>): New classes.
(<generic-with-setter>): Now an instance of the setter metaclass and a
child of the setter class, so that the "setter" slot ends up in the
right place.
(<accessor>, <extended-generic-with-setter>, <extended-accessor>): Be
instances of the setter metaclass.
(<method>, <accessor-method>): Move definitions farther down.
(make): Use slot-set! when initializing setters here.
(initialize): Likewise for <applicable-struct-with-setter>. Remove
specialization for <generic-with-setter>.
* libguile/goops.c (scm_sys_invalidate_method_cache_x): Remove C
interface to this internal method. Instead, internal callers are all
from Scheme, so we move the implementation to Scheme.
(scm_make): Dispatch to `make' in Scheme. This is an incompatible but
great change, as it fulfills the common user perception that scm_make
is the same as GOOPS's `make'.
(scm_sys_goops_early_init): Capture `make'.
(scm_no_applicable_method): Define in Scheme and capture in C.
* module/Makefile.am: Remove oop/goops/compile.scm and
oop/goops/dispatch.scm.
* module/oop/goops/compile.scm:
* module/oop/goops/dispatch.scm: Fold into goops.scm.
* module/oop/goops.scm: Fold in the generic compile and dispatch
modules. This eliminates a circularity that caused some eval-when
shenanigans, so remove the eval-whens as well. Reimplement the boot
version of `make' in Scheme, and make the <generic> `initialize'
method handle invalidation instead of the generic %allocate-instance.
(no-applicable-method): Define here. Import the utils module in the
normal define-module block.
* libguile/deprecated.h:
* libguile/deprecated.c (scm_basic_make_class): Deprecate.
* libguile/goops.c:
* libguile/goops.h (scm_make_standard_class): New internal helper. It's
a better spelling, as it matches make-standard-class, and is internal
so as not to cause confusion between boot GOOPS helpers and "real"
GOOPS interfaces.
* module/oop/goops.scm (build-<class>-slots): New helper, replacing
build_class_class_slots.
(build-slots-list, %compute-getters-n-setters, %compute-layout): New
private helpers, moved here from C.
(%prep-layout!): Reimplement in Scheme.
(make-standard-class): New private helper, replacing
scm_basic_make_class.
(<class>, <top>, <object>): Define in Scheme.
(<foreign-slot>, <protected-slot>, <hidden-slot>, <opaque-slot>,
<read-only-slot>, <self-slot>, <protected-opaque-slot>,
<protected-hidden-slot>, <protected-read-only-slot>, <scm-slot>,
<int-slot>, <float-slot>, <double-slot>, <procedure-class>,
<applicable-struct-class>, <method>, <accessor-method>, <applicable>,
<applicable-struct>, <generic>, <extended-generic>,
<generic-with-setter>, <accessor>, <extended-generic-with-setter>,
<extended-accessor>): Define in Scheme.
(<boolean>, <char>, <list>, <pair>, <null>, <string>, <symbol>,
<vector>, <foreign>, <hashtable>, <fluid>, <dynamic-state>, <frame>,
<vm-continuation>, <bytevector>, <uvec>, <array>, <bitvector>,
<number>, <complex>, <real>, <integer>, <fraction>, <keyword>,
<unknown>, <procedure>, <primitive-generic>, <port>, <input-port>,
<output-port>, <input-output-port>): Define in Scheme.
(compute-slots): Use build-slots-list helper.
* libguile/goops.h:
* libguile/goops.c (scm_basic_basic_make_class, scm_sys_compute_slots)
(scm_sys_prep_layout_x): Remove. These were available to C, but were
undocumented internals that were dangerous, confusing, and
unnecessary.
* libguile/goops.c: Add note about variable versus value references.
Remove internal C routines that were just used during boot, as they
have been moved to Scheme.
(scm_basic_make_class): Change to call out to make-standard-class in
Scheme.
(scm_sys_make_root_class, scm_sys_bless_applicable_struct_vtable_x)
(scm_sys_bless_pure_generic_vtable_x, scm_sys_init_layout_x): New
private helpers.
(scm_sys_goops_early_init): Change to capture values defined in
Scheme.
* libguile/goops.h:
* libguile/goops.c (scm_sys_fast_slot_ref, scm_sys_fast_slot_set_x):
Remove these unused, unsafe functions. They were publically available
only to C.
* module/oop/goops/active-slot.scm (compute-get-n-set): Update to use
struct-ref / struct-set! instead of %fast-slot-ref / %fast-slot-set!
from (oop goops internal).
* libguile/goops.c (scm_sys_goops_early_init)
(scm_init_goops_builtins): Factor out some initialization to a
separate helper. This will be the base for moving more things from C
to Scheme in the future.
* module/oop/goops.scm: Call %goops-early-init.
* libguile/goops.h:
* libguile/goops.c (scm_init_goops, scm_init_goops_builtins): Move
%init-goops-builtins to be an extension instead of a globally
accessible function.
* module/oop/goops.scm: Adapt.
* libguile/goops.c (build_class_class_slots, create_basic_classes):
Instead of creating <class> with uninitialized `direct-slots',
`slots', and `getters-n-setters' fields and initializing them later,
create <class> with a "boot" version of unspecialized slots and later
replace the fields with specialized slot classes. This allows
slot-ref to work during early boot, which is necessary to move
compute-cpl to Scheme.
(create_standard_classes): Finish initializing <class> here.
(map, filter_cpl, compute_cpl): Remove the boot-time compute-cpl in C
and its helpers.
(scm_basic_basic_make_class): Call compute-cpl in Scheme.
(fix_cpl): Remove; since we use the correct compute-cpl from the
beginning, there's no need to correct for the deficiencies of the C
implementation any more.
(build_slots_list): Adapt to build_class_class_slots change.
* module/oop/goops.scm (compute-std-cpl, compute-cpl): Move these up to
the top, so they can be called by the boot process.
(compute-clos-cpl, top-sort, std-tie-breaker, build-transitive-closure)
(build-constraints): Remove unused private code.
