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Struct objects can now define methods car, cdr and nullify.
With these, they can participate in operations on sequences.
* eval.h (car_s, cdr_s): Declared.
* lib.c (nullify_s): New symbol variable.
(car, cdr): Implement for struct objects via, respectively,
their car and cdr methods.
(tolist): Handle objects by mapping through identity.
(nullify): Implement for objects optionally: if an object
is a struct with a nullify method, use it, otherwise go
through default case of just returning the object.
(empty): Implement for objects that have nullify method.
(obj_init): Initialize nullify_s.
* struct.c (maybe_slot): New function.
* struct.h (maybe_slot): Declared.
* txr.1: Documented car, cdr and nullify method
convention.
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* LICENSE, METALICENSE, Makefile, args.c, args.h, arith.c,
arith.h, cadr.c, cadr.h, combi.c, combi.h, configure,
debug.c, debug.h, eval.c, eval.h, filter.c, filter.h, gc.c,
gc.h, glob.c, glob.h, hash.c, hash.h, jmp.S, lib.c, lib.h,
lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h,
parser.l, parser.y, rand.c, rand.h, regex.c, regex.h,
share/txr/stdlib/cadr.tl, share/txr/stdlib/except.tl,
share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl,
share/txr/stdlib/path-test.tl, share/txr/stdlib/place.tl,
share/txr/stdlib/struct.tl, share/txr/stdlib/txr-case.tl,
share/txr/stdlib/type.tl, share/txr/stdlib/with-resources.tl,
share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl,
signal.c, signal.h, stream.c, stream.h, struct.c, struct.h,
sysif.c, sysif.h, syslog.c, syslog.h, txr.1, txr.c, txr.h,
unwind.c, unwind.h, utf8.c, utf8.h: Add 2016 copyright.
* linenoise/LICENSE, linenoise/linenoise.c,
linenoise/linenoise.h: Bump one principal author's copyright
from 2014 to 2015. The code is based on a snapshot of 2015
upstream work.
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Structs can now have code which executes after an object is
initialized, which is useful for doing work like registering
objects in global lists and whatever, when those actions need
access to the initialized slots of the object.
* share/txr/stdlib/struct.tl (defstruct): Handle :posinit
syntax, by generating lambda as eighth argument of sys:make-struct
call.
* struct.c (struct struct_type): New member, postinitfun.
(struct_init): Adjust registrations of make_struct_type
to account for new parameter. The user visible
make-struct-type is registered as having one optional
argument, for backward compat.
(make_struct_type): New argument, postinitfun. Store this
in the structure. For backward compatibility, the argument
is defaulted.
(struct_type_mark): Mark the new postinitfun member.
(call_postinitfun_chain): New static function.
(make_struct, lazy_struct_init): Call call_postinitfun_chain
after slots are initialized, and after the boa function is
called.
* struct.h (make_struct_type): Declaration updated.
* lib.c (time_init): Pass eighth argument to make_struct type.
* sysif.c (sysif_init): Likewise.
* unwind.c (uw_late_init): Likewise.
* tests/012/struct.tl: Update defstruct expansion test case.
* txr.1: Document new argument of make-struct-type,
and clarify ordering of initfun with regard to
other actions. Likewise, document :postinit, and clarify
ordering of :init actions with regard to other actions.
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* eval.c (op_defun): Handle (meth type name) syntax
in place of name via sys:defmeth function, which
is dynamically resolved and autoloaded as necessary.
(builtin_reject_test): When defun is being checked,
recognize a (method ...) form and allow it.
* struct.h (meth_s): Declaration added.
* txr.1: Documented new defun capability.
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* eval.c (func_get_name): Use try to use new method_name
function, if unable to get name from the lexical or
global environment for functions.
* struct.c (meth_s): New symbol variable.
(struct_init): Initialize meth_s variable.
(method_name): New function.
* struct.h (method_name): Declared.
* txr.1: Re-documented func-get-name.
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* share/txr/stdlib/struct.tl (lnew): New macro.
* struct.c (struct_type): Turn id into a bitfield one bit
smaller than cnum. New Boolean bitfield lazy.
(struct_init): Register make-lazy-struct intrinsic.
(make_struct): Initialize lazy bitfield to zero.
(lazy_struct_init, check_init_lazy_struct): New static
functions.
(make_lazy_struct): New function.
(copy_struct, clear_struct, replace_struct, reset_struct,
lookup_slot, struct_inst_equal, struct_inst_hash):
Call check_init_lazy_struct on all structures involved.
(lookup_slot): Call check_init_lazy_struct.
(struct_inst_mark): If the struct is lazy, it has one
instance slot which must be marked, holding the argfun
function passed into make_lazy_struct.
* struct.h (make_lazy_struct): Declared.
* txr.1: Documented lnew and make-lazy-struct.
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* struct.c (struct_init): Register uslot intrinsic function.
(uslot_fun): New static function.
(uslot): New function.
* struct.h (uslot): Declared.
* share/txr/stdlib/struct.tl (usl): New macro.
* lisplib.c (struct_set_entries): Add usl macro.
* txr.1: Documented uslot and usl.
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* share/txr/stdlib/struct.tl (defmeth): New macro.
* struct.c (struct struct_type): New member, dvtypes.
(struct_init): Register static-slot-ensure
intrinsic.
(make_struct_type): Initialize dvtypes of newly instantiated
struct_type struct. If a super is specified, add new type
to the super's dvtypes.
(struct_type_mark): Mark st->dvtypes.
(static_slot_ensure): New function.
* struct.h (static_slot_ensure): Declared.
* txr.1: Documented defmeth and static-slot-ensure.
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* struct.c (reset_struct): New function.
(struct_init): Register reset_struct intrinsic.
* struct.h (reset_struct): Declared.
* txr.1: documented reset-struct.
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* struct.c (replace_struct): New function.
(struct_init): Register replace_struct intrinsic.
* struct.h (replace_struct): Declared.
* txr.1: documented replace-struct.
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* struct.c (clear_struct): New function.
(struct_init): Register clear-struct intrinsic.
* struct.h (struct_init): Declared.
* txr.1: documented clear-struct.
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* share/txr/stdlib/struct.tl (sys:prune-nil-inits):
Use of slot-p renamed.
* struct.c (struct_init): Register slotp, and make
registration of slot-p conditional on compatibility option.
(slot_p): Function renamed to slotp.
* struct.h (slot_p): Declaration renamed.
* txr.1: References to slot-p fixed to slotp. Compat notes
added.
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* share/txr/stdlib/struct.tl (umeth): New macro.
* struct.c (struct_init): Registered umethod intrinsic.
(umethod_fun): New static function.
(umethod): New function.
* txr.1: Documented.
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* struct.c (struct_init): Register super-method.
(super_method): New function.
* struct.h (super_method): Declared.
* txr.1: Documented.
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* share/txr/stdlib/struct.tl (sys:bad-slot-syntax): New helper function.
(defstruct): Macro revamped with new slot specifier syntax for
writing static slots as well as methods.
* struct.c (STATIC_SLOT_BASE): New preprocessor symbol.
(struct struct_type): New members, nstslots, stinitfun, stslot.
(make_struct_type_compat): New static function.
(struct_init): Register make-struct-type to make_struct_type_compat
if compatibility is 117 or lower.
Register new intrinsics static-slot, static-slot-set, call-super-method,
call-super-fun, slot-p and static-slot-p.
(call_stinitfun_chain): New static function.
(make_struct_type): Two new arguments for specifying static slots and
an initialization function for them. Logic added for setting
up static slots and handling inheritance.
(struct_type_destroy): New static function.
(struct_type_mark): Mark the new stinitfun member of struct type.
Also iterate over the static slots in the new stslot array and
mark them.
(lookup_slot): Altered to return a loc instead of a raw pointer,
and also to accept the instance object as a member.
Now resolves static slots: it can return a loc which references
a static slot in the structure type, or an instance slot in
the structure.
(lookup_static_slot): New static function.
(slot, slotset): Implementation adjusted due to new lookup_slot interface.
(static_slot, static_slot_set, slot_p, static_slot_p): New functions.
(call_super_method, call_super_fun): New static functions.
(struct_inst_print): This function can no longer assume that the slots
list lines up with the array of slots, since it contains a mixture of
static and instance slots. Earnest slot lookup has to be performed.
(struct_type_ops): Point the destroy function to struct_type_destroy
instead of cobj_destroy_free_op. A structure type now has an array
of static slots to free.
* struct.h (make_struct_type): Declaration updated.
(static_slot, static_slot_set, slot_p, static_slot_p): Declared.
* lib.c (time_init): Update call to make_struct_type with new
arguments.
* sysif.c (sysif_init): Likewise.
* tests/012/struct.tl: Update defstruct macro expansion test.
* txr.1: Documented static slots and new functions.
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* args.c (args_cat_zap): New function.
* args.h: (args_cat_zap): Declared.
* eval.c (struct_lit_s): New symbol variable.
(eval_init): Initialize struct_lit_s.
* eval.h (struct_lit_s): Declared.
* gc.c (finalize): If a symbol has a struct slot
hash attached to it, we must free it when
the symbol is reclaimed.
* lib.c (make_sym): Initialize symbol's slot_cache pointer
to null.
(copy): Copy structure objects.
(init): Call struct_init to initialize struct module.
* lib.h (SLOT_CACHE_SIZE): New preprocessor symbol
(slot_cache_line_t, slot_cache_t): New typedefs.
(struct sym): New member, slot_cache.
* lisplib.c (struct_set_entries, struct_instantiate): New
static functions.
(liplib_init): Register new functions in dl_table.
parser.y (HASH_S): New terminal symbol.
(struct): New grammar rule.
(n_expr): Derive struct.
(yybadtoken): Map HASH_S to #S string.
parser.l (grammar): Recognize #S and return HASH_S token.
share/txr/stdlib/place.tl (slot): New defplace.
share/txr/stdlib/struct.tl: New file.
struct.c: New file.
struct.h: New file.
* Makefile (OBJS): Adding struct.o.
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