* module/ice-9/boot-9.scm (map, for-each): Implement in Scheme instead
of C. There are boot versions before `cond' is defined.
(map-in-order): Define this alias here instead of in evalext.h.
* libguile/eval.c: Stub out the map and for-each definitions to just
call into Scheme.
* libguile/evalext.c: Remove map-in-order definition.
* module/srfi/srfi-1.scm: Replace all calls to map1 with calls to map.
(map, for-each): Define implementations here, in Scheme, instead of in
C.
* test-suite/tests/eval.test (exception:wrong-length, "map"): Update the
expected exception for mapping over lists of different lengths.
* libguile/srfi-1.h:
* libguile/srfi-1.c: Remove map and for-each definitions. Remove the
bit that extended the core `map' primitive with another method: the
right way to do that is with modules.
* libguile/eval.c (truncate_values): New helper.
(EVAL1): New macro, does an eval then truncates the values.
(eval, prepare_boot_closure_env_for_apply)
(prepare_boot_closure_env_for_eval): Use EVAL1 in appropriate places
to get multiple-values truncation even here in the boot evaluator.
eval.c fixen
* libguile/control.h:
* libguile/control.c (scm_i_prompt_pop_abort_args_x): Take a VM instead
of a prompt, given that it's the VM's registers that record the abort
arguments, not the prompt registers (which actually point right below
the abort values).
* libguile/eval.c (eval):
* libguile/throw.c (pre_init_catch): Pass the vm instead of a prompt.
* libguile/bytevectors.c:
* libguile/eval.c:
* libguile/goops.c:
* libguile/i18n.c:
* libguile/load.c:
* libguile/memoize.c:
* libguile/modules.c:
* libguile/ports.c:
* libguile/print.c:
* libguile/procs.c:
* libguile/programs.c:
* libguile/read.c:
* libguile/script.c:
* libguile/srfi-14.c:
* libguile/stacks.c:
* libguile/strings.c:
* libguile/throw.c:
* libguile/vm.c: Use scm_from_latin1_symboln to make symbols from string
literals, because they aren't in the user's locale -- they are in
ASCII, and we can optimize this case.
* libguile/vm-i-loader.c: Also use scm_from_latin1_symboln when loading
narrow symbols.
* libguile/debug.c:
* libguile/eval.c:
* libguile/frames.c:
* libguile/objcodes.c:
* libguile/print.c:
* libguile/programs.c:
* libguile/read.c:
* libguile/struct.c:
* libguile/vm.c: Fix a number of instances in which we assumed we could
fit a pointer into a long.
* libguile/eval.c:
* libguile/debug.c (scm_debug_opts): Move here, from eval.c. Change
SCM_BACKTRACE_P to 1, initially.
* libguile/private-options.h: Make all options vars private.
* libguile/vm.h (scm_c_vm_run): Make internal.
* libguile/vm.c (vm_default_engine): New static global variable.
(make_vm): Set vp->engine based on
(scm_vm_apply): Remove in favor of call-with-vm.
(scm_thread_vm, scm_set_thread_vm_x): Remove these, as they did not
have a well-defined meaning, and were dangerous to call on other
threads.
(scm_the_vm): Reinstate previous definition.
(symbol_to_vm_engine, vm_engine_to_symbol)
(vm_has_pending_computation): New helpers.
(scm_vm_engine, scm_set_vm_engine_x, scm_c_set_vm_engine_x): New
accessors for VM engines.
(scm_c_set_default_vm_engine_x, scm_set_default_vm_engine_x): New
setters for the default VM engine.
(scm_call_with_vm): New function, applies a procedure to arguments in
a context in which a given VM is current.
* libguile/eval.c (eval, scm_apply): VM dispatch goes through
scm_call_with_vm.
* test-suite/tests/control.test ("the-vm"):
* module/system/vm/coverage.scm (with-code-coverage): Use call-with-vm.
* module/system/vm/vm.scm: Update exports.
* test-suite/vm/run-vm-tests.scm (run-vm-program):
* test-suite/tests/compiler.test ("current-reader"): Just rely on the
result of make-program being an applicable.
* test-suite/tests/eval.test ("stack overflow"): Add a note that this
test does not test what it should.
* libguile/eval.c: Mark "breakpoints", "trace", and "procnames" debug
options as obsolete. There is lots of work left to do here, though.
* libguile/srcprop.h (scm_sym_breakpoint)
(scm_c_source_property_breakpoint_p, SRCBRKP): Remove these
definitions, without replacements.
* libguile/srcprop.c: Remove all code that has to do with breakpoints.
* module/ice-9/eval.scm (primitive-eval):
* libguile/eval.c (scm_c_primitive_eval): Don't expect a memoized
expression -- expect either raw source or an *expanded* expression. We
handle memoization ourselves.
* libguile/expand.c (scm_macroexpand): Settle down into its proper name,
"macroexpand", even as we comment that it is but a fleeting boot
expander.
(scm_macroexpanded_p): New predicate for expanded code.
* libguile/expand.h: Add scm_macroexpanded_p.
* libguile/memoize.c (scm_memoize_expression): Require that the
expression be expanded.
(scm_init_memoize): Don't alias memoize-expression to macroexpand.
* module/ice-9/psyntax-pp.scm:
* module/ice-9/psyntax.scm: Always produce macroexpanded expressions,
and hand them to primitive-eval. No more calls to memoize-expression
here.
* test-suite/tests/optargs.test: Remove some tests, as unfortunately we
have no way to invoke the boot expander after boot.
* libguile/Makefile.am:
* libguile/init.c:
* libguile/expand.c:
* libguile/expand.h: Add new expander. The idea is that macroexpansion
is one thing, and whether to compile or interpret the result of that
is another thing.
* libguile/memoize.c: Adapt to expand as necessary, and then memoize
expanded source without worrying about syntax errors.
* module/ice-9/eval.scm (make-general-closure): Allow alt clauses to not
possess the full make-general-closure arity.
* libguile/memoize.c (patch_case_lambda, scm_m_case_lambda)
(scm_m_case_lambda_star): Add memoizers for case-lambda and
case-lambda*.
(unmemoize): Unmemoize lambdas with multiple arities.
* libguile/eval.c (prepare_boot_closure_env_for_apply):
(prepare_boot_closure_env_for_eval): Adapt to return both body and
env, so that case-lambda clauses can be selected appropriately.
(eval, boot_closure_apply): Adapt callers.
* module/ice-9/eval.scm (make-general-closure): Support multiple
arities.
* libguile/memoize.c (scm_m_lambda_star): Define lambda* in the
pre-psyntax env, and make it memoize lambda* expressions.
* libguile/eval.c (BOOT_CLOSURE_PARSE_FULL): New helper.
(error_invalid_keyword, error_unrecognized_keyword): New helpers.
(prepare_boot_closure_env_for_apply): Flesh out application of boot
closures with "full" arity.
(prepare_boot_closure_env_for_eval): Punt to
prepare_boot_closure_env_for_eval for the full-arity case.
* module/ice-9/eval.scm (make-fixed-closure): Rename from `closure', and
just handle fixed arities, where there is no rest argument..
(make-general-closure): New helper, a procedure, that returns a
closure that can take rest, optional, and keyword arguments.
(eval): Adapt to call make-fixed-closure or make-general-closure as
appropriate.
* test-suite/tests/optargs.test ("lambda* inits"): Test the memoizer as
well.
* libguile/memoize.c (scm_m_lambda, memoize_named_let)
(scm_memoize_lambda, unmemoize)
* libguile/eval.c (eval, prepare_boot_closure_env_for_apply)
(prepare_boot_closure_env_for_eval, boot_closure_apply):
* module/ice-9/eval.scm (primitive-eval): Change the format for memoized
lambda expressions, so as to allow, in the future, case-lambda* to be
supported by the evaluator.
* libguile/eval.c (scm_c_primitive_eval):
* module/ice-9/eval.scm (primitive-eval): Rely on the expander to
produce a memoized expression. If the expression is already memoized,
just pass it through (the equivalent of the old "noexpand" hack).
* libguile/memoize.c (scm_init_memoize): Initialize `memoize-expression'
as the initial binding of `macroexpand'.
* libguile/modules.c (scm_module_transformer): Before modules are
booted, look for `macroexpand', not `%pre-modules-transformer'.
* module/ice-9/boot-9.scm: No more %pre-modules-transformer. Loading
psyntax extends `macroexpand'.
(make-module): `macroexpand' is the default transformer.
* module/ice-9/psyntax.scm: No more `noexpand'.
(top-level-eval-hook, local-eval-hook): Instead of annotating with
noexpand, memoize the expression before handing it to primitive-eval.
(macroexpand): No more noexpand hack -- in its place we have another
hack, to memoize the result when running in eval mode.
* module/ice-9/psyntax-pp.scm: Regenerated.
* libguile/eval.c (CAR, CDR, CAAR, CADR, CDAR, CDDR, CADDR, CDDDR): Use
the macro variants, not the functions.
(eval)[SCM_M_CALL]: When invoking a VM program, accumulate its
arguments on the stack rather than on the heap.
* libguile/memoize.c (CAR, CDR, CAAR, CADR, CDAR, CDDR, CADDR, CDDDR,
CADDR): Use the macro variants, not the functions.
(scm_memoized_expression_typecode): Use `SCM_I_MAKINUM' instead of
`scm_from_uint16'.
* libguile/control.h (SCM_PROMPT_HANDLER): Remove, it was unused.
(SCM_PROMPT_DYNWINDS): Rename from SCM_PROMPT_DYNENV.
* libguile/control.c: (scm_c_make_prompt): Take another arg, the winds
that are to be in place for the prompt. Fix allocation to be 4 words
instead of 5 (the handler was never used).
* libguile/eval.c (eval):
* libguile/throw.c (pre_init_catch): Adapt to scm_c_make_prompt change.
* libguile/vm-i-system.c (partial-cont-call): Grovel the new elements of
the wind list in order to call setjmp() on the new prompts. Pass
cookie to vm_reinstate_partial_continuation.
(prompt): Adapt to scm_c_make_prompt change.
* libguile/vm.c (vm_reinstate_partial_continuation): Take a cookie arg,
used when winding captured prompts onto the stack. Winding a prompt
implies making a new prompt, actually -- with new registers, a new
jump buffer, new winds, etc.
* test-suite/tests/control.test ("rewinding prompts"): Add a test for
rewinding prompts.
* libguile/control.h:
* libguile/control.c (scm_c_make_prompt): Instead of taking a VM arg,
take the registers directly.
(scm_c_abort): Declare as returning void. In fact it will never
return.
* libguile/eval.c (eval):
* libguile/throw.c (pre_init_catch): Adapt to prompt API change.
* libguile/vm-i-system.c (prompt): Pass the abort ip as the ip to
scm_c_make_prompt. This fixes a bug in which we used the "offset"
local var, but it wasn't guaranteed to be around after a longjmp.
* libguile/control.h:
* libguile/control.c (scm_c_make_prompt): Take an extra arg, a cookie.
Continuations will be rewindable only if the abort has the same cookie
as the prompt.
(scm_at_abort): Redefine from scm_abort, and instead of taking rest
args, take the abort values as a list directly. Also, don't allow
rewinding, because we won't support rewinding the C stack with
delimited continuations.
* libguile/eval.c (eval): Adapt to scm_c_make_prompt change.
* libguile/vm-engine.c (vm_engine): Use vp->cookie to get a unique value
corresponding to this VM invocation.
* libguile/vm-i-system.c (prompt): Pass the cookie to scm_c_make_prompt.
(abort): Take an additional tail arg.
* libguile/vm.c (vm_abort): Parse out the abort tail arg. This is for
the @abort case, or the (apply abort ...) case.
(make_vm): Initialize the cookie to 0.
* libguile/vm.h (struct scm_vm): Add cookie.
* module/ice-9/boot-9.scm (abort): Define here as a trampoline to
@abort. Needed to make sure that a call to abort dispatches to a VM
opcode, so the cookie will be the same.
* module/language/tree-il.scm (<tree-il>): Add a "tail" field to
<abort>, for the (apply abort ...) case, or (@abort tag args). Should
be #<const ()> in the normal case. Add support throughout.
* module/language/tree-il/analyze.scm (analyze-lexicals): Add abort-tail
support here too.
* module/language/tree-il/compile-glil.scm (flatten): Compile the tail
argument appropriately.
* module/language/tree-il/primitives.scm (*primitive-expand-table*): Fix
@abort and abort cases to pass the tail arg to make-abort.
* libguile/control.h:
* libguile/control.c: Remove scm_atcontrol and scm_atprompt.
(scm_c_make_prompt): Remove handler arg, as the handler is inline.
(scm_abort): New primitive, exported to Scheme as `abort'. The
compiler will also recognize calls to `abort', but this is the base
case.
(scm_init_control): Remove scm_register_control, just have this
function, which adds `abort' to the `(guile)' module.
* libguile/eval.c (eval): Add SCM_M_PROMPT case.
* libguile/init.c (scm_i_init_guile): Change scm_register_control call
into a nice orderly scm_init_control call.
* libguile/memoize.h: (scm_sym_at_prompt, SCM_M_PROMPT):
* libguile/memoize.c (MAKMEMO_PROMPT, scm_m_at_prompt, unmemoize): Add
prompt support to the memoizer.
* libguile/vm-i-system.c (prompt): Fix to not expect a handler on the
stack.
* module/ice-9/boot-9.scm (prompt): Add definition in terms of @prompt.
* module/ice-9/control.scm: Simplify, and don't play with the compiler
here, now that prompt and abort are primitive.
* module/ice-9/eval.scm (primitive-eval): Add a prompt case.
* module/language/tree-il/primitives.scm
(*interesting-primitive-names*): Add @prompt and prompt.
* 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.
* libguile/continuations.h
* libguile/continuations.c (scm_i_call_with_current_continuation): New
internal function. Not exported because I'm not sure whether or not
this should have a continuation barrier in the future. Uses a
hand-coded VM procedure.
* libguile/eval.c (eval): Use scm_i_call_with_current_continuation.
* libguile/eval.h:
* libguile/eval.c (scm_call_n): New function, applies a function to an
array of args.
* libguile/hooks.h:
* libguile/hooks.c (scm_c_run_hookn): New function, runs a hook with an
array of args.
* 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/root.h
* libguile/root.c (scm_sys_protects): It used to be that for some reason
we'd define a special array of "protected" values. This was a little
silly, always, but with the BDW GC it's completely unnecessary. Also
many of these variables were unused, and none of them were good API.
So remove this array, and either eliminate, make static, or make
internal the various values.
* libguile/snarf.h: No need to generate calls to scm_permanent_object.
* guile-readline/readline.c (scm_init_readline): No need to call
scm_permanent_object.
* libguile/array-map.c (ramap, rafe): Remove the dubious nullvect
optimizations.
* libguile/async.c (scm_init_async): No need to init scm_asyncs, it is
no more.
* libguile/eval.c (scm_init_eval): No need to init scm_listofnull, it is
no more.
* libguile/gc.c: Make scm_protects a static var.
(scm_storage_prehistory): Change the sanity check to use the address
of protects.
(scm_init_gc_protect_object): No need to clear the scm_sys_protects,
as it is no more.
* libguile/keywords.c: Make the keyword obarray a static var.
* libguile/numbers.c: Make flo0 a static var.
* libguile/objprop.c: Make object_whash a static var.
* libguile/properties.c: Make properties_whash a static var.
* libguile/srcprop.h:
* libguile/srcprop.c: Make scm_source_whash a global with internal
linkage.
* libguile/strings.h:
* libguile/strings.c: Make scm_nullstr a global with internal linkage.
* libguile/vectors.c (scm_init_vectors): No need to init scm_nullvect,
it's unused.
* libguile/debug.c (scm_procedure_name): Remove a SCM_CLOSUREP case and
some dead code.
(scm_procedure_module): Remove. This was introduced a few months ago
for the hygienic expander, but now it is no longer needed, as the
expander keeps track of this information itself.
* libguile/debug.h: Remove scm_procedure_module.
* libguile/eval.c: Instead of using tc3 closures, define a "boot
closure" applicable smob type, and represent closures with that. The
advantage is that after eval.scm is compiled, boot closures take up no
address space (besides a smob number) in the runtime, and require no
special cases in procedure dispatch.
* libguile/eval.h: Remove the internal functions scm_i_call_closure_0
and scm_closure_apply, and the public function scm_closure.
* libguile/gc.c (scm_storage_prehistory): No tc3_closure displacement
registration.
(scm_i_tag_name): Remove closure case, and a dead cclo case.
* libguile/vm.c (apply_foreign):
* libguile/print.c (iprin1):
* libguile/procs.c (scm_procedure_p, scm_procedure_documentation);
* libguile/evalext.c (scm_self_evaluating_p):
* libguile/goops.c (scm_class_of): Remove tc3_closure/tcs_closure cases.
* libguile/hash.c (scm_hasher):
* libguile/hooks.c (scm_add_hook_x): Use new scm_i_procedure_arity.
* libguile/macros.c (macro_print): Print all macros using the same code.
(scm_macro_transformer): Return any procedure, not just programs.
* libguile/procprop.h:
* libguile/procprop.c (scm_i_procedure_arity): Instead of returning a
list that the caller has to parse, have the same prototype as
scm_i_program_arity. An incompatible change, but it's an internal
function anyway.
(scm_procedure_properties, scm_set_procedure_properties)
(scm_procedure_property, scm_set_procedure_property): Remove closure
cases, and use scm_i_program_arity for arity.
* libguile/procs.h (SCM_CLOSUREP, SCM_CLOSCAR, SCM_CODE)
(SCM_CLOSURE_NUM_REQUIRED_ARGS, SCM_CLOSURE_HAS_REST_ARGS)
(SCM_CLOSURE_BODY, SCM_PROCPROPS, SCM_SETPROCPROPS, SCM_ENV)
(SCM_TOP_LEVEL): Remove these macros that pertain to boot closures
only. Only eval.c should know abut boot closures.
* libguile/procs.c (scm_closure_p): Remove this function. There is a
simple stub in deprecated.scm now.
(scm_thunk_p): Use scm_i_program_arity.
* libguile/tags.h (scm_tc3_closure): Remove. Yay, another tc3 to play
with!
(scm_tcs_closures): Remove.
* libguile/validate.h (SCM_VALIDATE_CLOSURE): Remove.
* module/ice-9/deprecated.scm (closure?): Add stub.
* module/ice-9/documentation.scm (object-documentation)
* module/ice-9/session.scm (help-doc, arity)
* module/oop/goops.scm (compute-getters-n-setters)
* module/oop/goops/describe.scm (describe)
* module/system/repl/describe.scm (display-object, display-type):
Remove calls to closure?.
* libguile/gsubr.c (create_gsubr, create_gsubr_with_generic): Always
create gsubrs -- never the specialized tc7 types. Allow gsubrs to have
generics, there doesn't seem to be any reason not to.
* libguile/macros.c (scm_make_synt):
* libguile/values.c (scm_init_values):
* libguile/eval.c (scm_init_eval):
* libguile/gc.c (scm_init_gc): Use scm_c_define_gsubr instead of
scm_c_define_subr.
* libguile/goops.c (scm_class_of): Allow gsubrs to be primitive
generics.
* libguile/eval.c (scm_primitive_eval, scm_c_primitive_eval):
(scm_init_eval): Rework so that scm_primitive_eval always calls out to
the primitive-eval variable. The previous definition is the default
value, which is probably overridden by scm_init_eval_in_scheme.
* libguile/init.c (scm_i_init_guile): Move ports and load-path up, so we
can debug when initing eval. Call scm_init_eval_in_scheme. Awesome.
* libguile/load.h:
* libguile/load.c (scm_init_eval_in_scheme): New procedure, loads up
ice-9/eval.scm to replace the primitive-eval definition, if everything
is there and up-to-date.
* libguile/modules.c (scm_module_transformer): Export to Scheme, so it's
there for eval.go.
* module/ice-9/boot-9.scm: No need to define module-transformer.
* module/ice-9/eval.scm (capture-env): Only reference the-root-module if
modules are booted.
(primitive-eval): Inline a definition for identity. Throw a more
standard error for "wrong number of arguments".
* module/ice-9/psyntax.scm (chi-install-global): The macro binding for a
syncase macro is now a pair: the transformer, and the module that was
current when the transformer was installed. The latter is used for
hygiene purposes, replacing the use of procedure-module, which didn't
work with the interpreter's shared-code closures.
(chi-macro): Adapt for the binding being a pair, and get the hygiene
from the cdr.
(eval-local-transformer): Adapt to new form of macro bindings.
* module/ice-9/psyntax-pp.scm: Regenerated.
* .gitignore: Ignore eval.go.stamp.
* module/Makefile.am: Reorder for fastest serial compilation, now that
there are no ordering constraints. I did a number of experiments here
and this seems to be the best; but the bulk of the time is compiling
psyntax-pp.scm with eval.scm. Not so great.
* libguile/vm-engine.c (vm-engine): Throw a more standard error for
"wrong type to apply".
* test-suite/tests/gc.test ("gc"): Remove a hack that shouldn't affect
the new evaluator, and throw in another (gc) for good measure.
* test-suite/tests/goops.test ("defining classes"):
* test-suite/tests/hooks.test (proc1): We can't currently check what the
arity is of a closure made by eval.scm -- or more accurately all
closures have 0 required args and no rest args. So punt for now.
* test-suite/tests/syntax.test ("letrec"): The scheme evaluator can't
check that a variable is unbound, currently; perhaps the full "fixing
letrec" expansion could fix this. But barring that, punt.
* libguile/eval.c (eval): Call scm_vm_apply instead of apply.
(apply): Deleted, no longer referenced. Heh.
(scm_apply): Call scm_vm_apply.
* libguile/init.c (scm_i_init_guile): Bootstrap the VM before the
evaluator.
* libguile/vm.c (scm_vm_apply): Actually it's not necessary that the
procedure is a program; so that's cool, relax the check.
* libguile/eval.h:
* libguile/eval.c (scm_closure_apply): New function, applies a closure.
Won't be necessary in the future, but for now here it is, with
internal linkage.
* libguile/gsubr.h:
* libguile/gsubr.c (scm_i_gsubr_apply_array): New function, applies a
gsubr to an array of values, potentially extending that array for
optional arguments and rest arguments and such.
* libguile/vm.c (apply_foreign): New function, applies a foreign
function to arguments on the stack, in place.
* libguile/vm-i-system.c (call): Add a case for procedures-with-setters
(will go away when they are applicable structs). Instead of calling
the evaluator for foreign functions, call apply_foreign.
* 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.
