* libguile/tags.h (scm_tc7_with_fluids): Allocate a tc7 for
"with-fluids" objects, which will only live on the dynamic stack (wind
list), not in normal scheme-land.
* libguile/fluids.h (SCM_WITH_FLUIDS_P, SCM_WITH_FLUIDS_LEN)
(SCM_WITH_FLUIDS_NTH_FLUID, SCM_WITH_FLUIDS_NTH_VAL)
(SCM_WITH_FLUIDS_SET_NTH_VAL): Add some accessors.
* libguile/fluids.c (scm_i_make_with_fluids, scm_i_swap_with_fluids):
New internal functions.
(scm_c_with_fluids, scm_c_with_fluid): Push with-fluids objects on the
dynwind list, not winders.
* libguile/dynwind.c (scm_i_dowinds): Add cases for winding and
unwinding with-fluids objects.
* libguile/memoize.h (scm_sym_with_fluids, SCM_M_BEGIN): New public
data.
* libguile/memoize.c (scm_m_with_fluids): Define with-fluids as a
primitive syntax.
(unmemoize): Add with-fluids case.
* libguile/eval.c (eval):
* module/ice-9/eval.scm (primitive-eval): Add with-fluids cases.
* test-suite/tests/fluids.test
("fluids not modified if nonfluid passed to with-fluids"): Enable a
now-passing test.
* libguile/memoize.h (scm_sym_at_dynamic_wind, SCM_M_DYNWIND)
* libguile/memoize.c (memoized_tags, MAKMEMO_DYNWIND)
(scm_m_at_dynamic_wind, unmemoize): Add dynwind as a primitive
expression type.
* libguile/dynwind.c (scm_dynamic_wind): Downgrade to a normal C
function.
* libguile/eval.c (eval):
* module/ice-9/eval.scm (primitive-eval): Add dynwind support.
* module/ice-9/r4rs.scm: More relevant docs.
(apply): Define in a more regular way.
(dynamic-wind): Add to this file, with docs, dispatching to
@dynamic-wind.
* module/language/tree-il/primitives.scm: Parse @dynamic-wind into a
tree-il dynamic-wind.
There are some incompatible changes here, but only to interfaces that
were introduced earlier in 1.9, or interfaces which have been broken
since early in 1.9.
* libguile/_scm.h (SCM_OBJCODE_MINOR_VERSION): Bump, as the macro
changes affect the interface that is called by psyntax-generated macro
definitions.
* libguile/inline.h (scm_words): New function, allocates a variable
number of contiguous scm_t_bits locations, with a given value in the
0th word, and 0 in the rest of the words.
* libguile/macros.h: Rework interface to correspond more closely, and
minimally, to the needs of memoize.c and psyntax.
(SCM_ASSYNT, SCM_MACRO_TYPE_BITS, SCM_MACRO_TYPE_MASK)
(SCM_F_MACRO_EXTENDED, SCM_MACROP, SCM_MACRO_TYPE)
(SCM_MACRO_IS_EXTENDED, SCM_BUILTIN_MACRO_P, SCM_SYNCASE_MACRO_P)
(SCM_MACRO_CODE, scm_tc16_macro): Remove CPP macros related to the
representation of Scheme macros.
(scm_i_make_primitive_macro): Renamed from scm_i_makbimacro.
(scm_i_macro_primitive): New accessor so that memoize.c can get to the
primitive syntax transformer.
(scm_make_syncase_macro, scm_make_extended_syncase_macro)
(scm_syncase_macro_type, scm_syncase_macro_binding): Removed these
functions, replaced by make-syntax-transformer and its accessors.
(scm_macro_binding): New accessor, the same as what
scm_syncase_macro_binding was.
* libguile/macros.c: All representation details of syntax transformers
are private to this file now.
(macro_print): Print macros as #<syntax-transformer ...>, or
#<primitive-syntax-transformer ...> if psyntax has not attached a
transformer of its own.
(scm_i_make_primitive_macro): Represent macros as 5-word smobs.
(scm_make_syntax_transformer): New constructor for syntax transformers
(macros), exported to scheme. Takes a name, and looks it up in the
current module to determine the previous primitive transformer, if
any.
(scm_macro_type): Instead of returning 'builtin-macro!, etc, return
the type as set by psyntax, or #f if it's a primitive.
(scm_macro_name): Return the stored macro name.
(scm_macro_transformer): Return the psyntax-set syntax transformer.
Hacky, but should help introspection somewhat.
* libguile/memoize.c (memoize_env_ref_transformer): Use the new
scm_i_macro_primitive, and adapt to other macro API changes.
* module/ice-9/psyntax.scm (put-global-definition-hook)
(get-global-definition-hook, chi-install-global): Call (and generate
calls to) the new macro constructors and accessors.
* module/ice-9/psyntax-pp.scm: Doubly regenerated.
* module/ice-9/debugging/traps.scm (trap-here): Comment out this
definition and export, while it's not working.
* libguile/snarf.h (SCM_SYNTAX): Remove snarf macro, users can't define
primitive syntax any more.
* libguile/memoize.c (SCM_SYNTAX): Define locally, and just call
scm_i_makbimacro as there's no difference between that and
scm_makmmacro. Alter invocations to suit.
* libguile/macros.h:
* libguile/macros.c (scm_i_makmmacro): Remove; users can't define
primitive syntax any more. Use define-syntax instead.
(scm_make_synt): Remove, this was only used by the SCM_SYNTAX snarf
macro.
(scm_i_makbimacro): Change prototype of this internal function to make
the gsubr on behalf of the caller.
(macro_print, scm_macro_type): Remove cases for mmacros.
* libguile/memoize.c (MAKMEMO_CALL): Memoize in the number of arguments
at the call site.
(memoize, scm_m_cond, memoize_named_let, unmemoize):
* libguile/eval.c (eval): Adapt to changes in call memoization.
* module/ice-9/eval.scm (primitive-eval): For calls, pass the first N
arguments directly on the stack, and only the rest as a consed
argument list to apply. Currently N is 4.
* libguile/struct.h (scm_c_make_struct, scm_c_make_structv): New
functions with which you can make a struct without consing a rest
list.
* libguile/struct.c (scm_struct_init): Refactor to take an array of init
values, not a list.
(scm_make_struct, scm_make_vtable_vtable): Pull the rest arg out into
a list and pass it down to the new array-taking functions.
* libguile/memoize.c: Remove a neeless #include <alloca>.
* libguile/tags.h: Remove tc7 #defines for subrs, replacing them with
placeholders. These were public, but hopfully unused. I don't see how
to usefully deprecate them.
* libguile/array-map.c (scm_array_map_x): Remove special cases for
certain subr types. This might make things slower for the moment,
otoh, native compilation should moot that question.
* libguile/eval.i.c:
* libguile/eval.c: Remove subr-handling cases. To regain this speed and
more won't have to wait for native compilation, though -- this change
smooths the way for subr dispatch in the VM.
* libguile/gsubr.c (scm_i_gsubr_apply): Fix a bug in which we didn't
detect too-many-arguments. This would only show up when using ceval,
as only ceval called this function.
* test-suite/tests/ramap.test ("array-map!"): Change the expected
exception if passed a procedure of the wrong arity. It now gives
wrong-num-args.
more won't have to wait for native compilation, though -- this change
smooths the way for subr dispatch in the VM.
* libguile/goops.c (scm_class_of): Remove subr cases. No speed
implication.
* libguile/objects.c (scm_valid_object_procedure_p): Remove this public
but undocumented, and useless, function. I do not think this will
affect anyone at all.
(scm_set_object_procedure_x): Replace a call to
scm_valid_object_procedure_p with scm_procedure_p, and actually wrap
with a scm_is_true.
* module/oop/goops.scm (initialize-object-procedure): Don't call
valid-object-procedure?.
* libguile/eval.c: Fix a comment.
(eval): Abstract out the variable memoization into a function,
scm_memoize_variable_access_x.
* libguile/memoize.c (memoized_tags): Fix a couple names.
(scm_memoize_variable_access_x): New internal function. Actually it's
public to Scheme, but we can't do much about that, because the new
evaluator will need it.
(scm_memoized_expression_typecode, scm_memoized_expression_data): New
accessors for memoized code, for Scheme.
(scm_memoized_typecode): Looks up the typecode for a symbol.
* libguile/eval.c: So, ladies & gents, a new evaluator. It's similar to
the old one, in that we memoize and then evaluate, but in this
incarnation, memoization of an expression happens before evaluation,
not lazily as the expression is evaluated. This makes the evaluation
itself much cleaner, in addition to being threadsafe. In addition,
since this C evaluator will in the future just serve to bootstrap the
Scheme evaluator, we don't have to pay much concern for debugging
conveniences. So the environment is just a list of values, and the
memoizer pre-computes where it's going to find each individual value
in the environment.
Interface changes are commented below, with eval.h.
(scm_evaluator_traps): No need to reset the debug mode after rnning te
traps thing. But really, the whole traps system needs some love.
* libguile/memoize.h:
* libguile/memoize.c: New memoizer, which runs before evaluation,
checking all syntax before evaluation begins. Significantly, no
debugging information is left for lexical variables, which is not so
great for interactive debugging; perhaps we should change this to have
a var list in the future as per the classic interpreters. But it's
quite fast, and the resulting code is quite good. Also note that it
doesn't produce ilocs, memoized code is a smob whose type is in the
first word of the smob itself.
* libguile/eval.h (scm_sym_and, scm_sym_begin, scm_sym_case)
(scm_sym_cond, scm_sym_define, scm_sym_do, scm_sym_if, scm_sym_lambda)
(scm_sym_let, scm_sym_letstar, scm_sym_letrec, scm_sym_quote)
(scm_sym_quasiquote, scm_sym_unquote, scm_sym_uq_splicing, scm_sym_at)
(scm_sym_atat, scm_sym_atapply, scm_sym_atcall_cc)
(scm_sym_at_call_with_values, scm_sym_delay, scm_sym_eval_when)
(scm_sym_arrow, scm_sym_else, scm_sym_apply, scm_sym_set_x)
(scm_sym_args): Remove public declaration of these symbols.
(scm_ilookup, scm_lookupcar, scm_eval_car, scm_eval_body)
(scm_eval_args, scm_i_eval_x, scm_i_eval): Remove public declaration
of these functions.
(scm_ceval, scm_deval, scm_ceval_ptr): Remove declarations of these
deprecated functions.
(scm_i_print_iloc, scm_i_print_isym, scm_i_unmemocopy_expr)
(scm_i_unmemocopy_body): Remove declarations of these internal
functions.
(scm_primitive_eval_x, scm_eval_x): Redefine as macros for their less
destructive siblings.
* libguile/Makefile.am: Add memoize.[ch] to the build.
* libguile/debug.h (scm_debug_mode_p, scm_check_entry_p)
(scm_check_apply_p, scm_check_exit_p, scm_check_memoize_p)
(scm_debug_eframe_size): Remove these vars that were tied to the old
evaluator's execution model.
(SCM_RESET_DEBUG_MODE): Remove, no more need for this.
(SCM_MEMOIZEDP, SCM_MEMOIZED_EXP, SCM_MEMOIZED_ENV): Remove macros
referring to old memoized code representation.
(scm_local_eval, scm_procedure_environment, scm_memoized_environment)
(scm_make_memoized, scm_memoized_p): Remove functions operating on old
memoized code representation.
(scm_memcons, scm_mem_to_proc, scm_proc_to_mem): Remove debug-only
code for old evaluator.
* libguile/debug.c: Remove code to correspond with debug.h removals.
(scm_debug_options): No need to set the debug mode or frame limit
here, as we don't have C stack limits any more. Perhaps this is a bug,
but as long as we can compile eval.scm, we should be fine.
* libguile/init.c (scm_i_init_guile): Init memoize.c.
* libguile/modules.c (scm_top_level_env, scm_env_top_level)
(scm_env_module, scm_system_module_env_p): Remove these functions.
* libguile/print.c (iprin1): No more need to handle isyms. Adapt to new
form of interpreted procedures.
* libguile/procprop.c (scm_i_procedure_arity): Adapt to new form of
interpreted procedures.
* libguile/procs.c (scm_thunk_p): Adapt to new form of interpreted
procedures.
* libguile/procs.h (SCM_CLOSURE_FORMALS): Removed, this exists no more.
(SCM_CLOSURE_NUM_REQUIRED_ARGS, SCM_CLOSURE_HAS_REST_ARGS): New
accessors.
* libguile/srcprop.c (scm_source_properties, scm_source_property)
(scm_set_source_property_x): Remove special cases for memoized code.
* libguile/stacks.c (read_frame): Remove a source-property case for
interpreted code.
(NEXT_FRAME): Remove a case that I don't fully understand, that seems
to be designed to skip over apply frames. Will be obsolete in the
futures.
(read_frames): Default source value for interpreted frames to #f.
(narrow_stack): Don't pay attention to the system_module thing.
* libguile/tags.h: Remove isyms and ilocs. Whee!
* libguile/validate.h (SCM_VALIDATE_MEMOIZED): Fix to use the new
MEMOIZED_P formulation.
* module/ice-9/psyntax-pp.scm (do, quasiquote, case): Adapt for these no
longer being primitive macros.
* module/ice-9/boot-9.scm: Whitespace change, but just a poke to force a
rebuild due to and/or/cond/... not being primitives any more.
* module/ice-9/deprecated.scm (unmemoize-expr): Deprecate, it's
unmemoize-expression now.
* test-suite/tests/eval.test ("define set procedure-name"): XFAIL a
couple of tests here; I don't know what to do about them. I reckon the
expander should ensure that defined values are named.
* test-suite/tests/chars.test ("basic char handling"): Fix expected
exception when trying to apply a char.
