* module/ice-9/boot-9.scm (exception-kind, exception-args): Export.
* module/ice-9/exceptions.scm (exception-kind, exception-args):
Re-export.
* module/srfi/srfi-18.scm: Rewrite exception support in terms of core
exceptions, not SRFI-34/35.
* test-suite/tests/srfi-18.test: Since Guile doesn't expose the current
exception handler as such, SRFI-18 captures it using delimited
continuations. This means that we can't compare the result
of (current-exception-handler) with the installed handler using eq?,
even though the procedures are indeed equivalent. So, instead test
handler behavior.
* doc/ref/api-control.texi (Prompt Primitives): Reference the newer
exception facilities.
(Exceptions): Rewrite to use the new exception primitives.
(Exception Terminology): Remove superfluous section.
(Exception Objects): New section.
(Raising and Handling Exceptions): New section.
(Throw and Catch): New section, coalescing the previous catch,
with-throw-handler, and throw sections.
(Exceptions and C): New section, for miscellaneous procedures.
(Handling Errors): Mention the transitional period regarding exception
handling.
* doc/ref/api-debug.texi (Catching Exceptions): Rewrite to use newer
exception facilities.
(Capturing Stacks): Remove, as it's not really recommendable any
more.
(Pre-Unwind Debugging): Rewrite to use the new primitives.
(Standard Error Handling): Add note about transitional status.
(Stack Overflow): Reference new exception section.
* doc/ref/api-scheduling.texi (Mutexes and Condition Variables):
Reference new exception section.
* doc/ref/r6rs.texi (rnrs exceptions, rnrs conditions): Update to
mention compatibility with SRFI-34/35 and to relate to core
exceptions.
* doc/ref/srfi-modules.texi (SRFI-34): Document.
* libguile/exceptions.c:
* libguile/exceptions.h: New files.
* libguile.h: Add exceptions.h.
* libguile/Makefile.am (libguile_@GUILE_EFFECTIVE_VERSION@_la_SOURCES):
(DOT_X_FILES, DOT_DOC_FILES, modinclude_HEADERS): Add exceptions.c and
exceptions.h.
* libguile/init.c (scm_i_init_guile): Initialize exceptions.
* libguile/threads.c (scm_spawn_thread): Use new names for
scm_i_make_catch_handler and scm_c_make_thunk.
* libguile/throw.c: Rewrite to be implemented in terms of
with-exception-handler / raise-exception.
* libguile/throw.h: Use data types from exceptions.h. Move
scm_report_stack_overflow and scm_report_out_of_memory to
exceptions.[ch].
* module/ice-9/boot-9.scm (&error, &programming-error)
(&non-continuable, make-exception-from-throw, raise-exception)
(with-exception-handler): New top-level definitions.
(throw, catch, with-throw-handler): Rewrite in terms of
with-exception-handler and raise-exception.
: New top-level definitions.
* module/ice-9/exceptions.scm: Adapt to re-export &error,
&programming-error, &non-continuable, raise-exception, and
with-exception-handler from boot-9.
(make-quit-exception, guile-quit-exception-converter): New exception
converters.
(make-exception-from-throw): Override core binding.
* test-suite/tests/eval.test ("inner trim with prompt tag"): Adapt to
"with-exception-handler" being the procedure on the stack.
("outer trim with prompt tag"): Likewise.
* test-suite/tests/exceptions.test (throw-test): Use pass-if-equal.
* module/srfi/srfi-34.scm: Reimplement in terms of core exceptions, and
make "guard" actually re-raise continuations with the original "raise"
continuation.
* module/ice-9/exceptions.scm: New file, derived from (rnrs
conditions). Perhaps unadvisedly, in this file I've renamed a number
of the identifiers. I have never found that the R6RS identifiers made
sense to me. For now this is an internal module that R6RS and SRFI-35
will be based on.
* module/Makefile.am (SOURCES): Add the new file.
* module/rnrs/conditions.scm (rnrs): Export renamed identifiers
from (ice-9 exceptions).
* module/rnrs/conditions.scm: Use core record facilities to define the
base condition types, define-condition-type, and the standard
condition hierarchy.
(simple-condition?): Rename from condition-internal?.
* module/rnrs/exceptions.scm: Move `raise' definition here, out from the
procedural records layer.
(format-simple-condition): Reimplement in a simpler way, hopefully
producing the same output.
* module/rnrs/records/procedural.scm:
* module/rnrs/records/inspection.scm: Import the exceptions and
conditions modules, and use the normal raise function.
* module/ice-9/boot-9.scm (record-type-uid): New accessor.
(make-record-type): Record UID in record type properties.
* module/rnrs/conditions.scm (define-condition-type): Fix invalid
invocation of make-record-type.
* module/rnrs/records/inspection.scm: Rewrite to use core record
inspection facilities.
* module/rnrs/records/procedural.scm: Rewrite to use core
make-record-type. Incidentally the result is that instances of
derived R6RS record types are now flat instead of nested.
* test-suite/tests/r6rs-records-procedural.test
("make-record-type-descriptor"): Relax a couple condition type checks,
while we redo the exception system.
* module/ice-9/boot-9.scm (make-record-type): Allow (mutable NAME)
or (immutable NAME) as a field name, and record field mutability in a
bitfield.
(record-modifier): Throw an error if the field isn't mutable.
* test-suite/tests/records.test ("records"): Add tests.
* doc/ref/api-data.texi (Records): Update.
* module/srfi/srfi-35.scm: Import (ice-9 match), and remove now-unused
srfi-1 import.
(print-condition): Print more like records, as appears to be the
intention.
(&condition): Define using make-record-type. Adapt all callers.
Also, compound conditions are now a disjoint type, handled specially
by condition-ref, condition?, and so on.
* test-suite/tests/srfi-35.test (v3): Fix an error in which a
subcondition was initialized without initializers for all of its
fields.
* module/ice-9/boot-9.scm (make-record-type): Validate that the fields
are a unique list of symbols. Deprecate passing a string as a type
name.
* module/system/base/syntax.scm (define-record): Update to pass a symbol
as a type name.
* test-suite/tests/records.test (rtd-foo, rtd-fŏŏ, "records"): Adapt to
make record types with symbol names.
* module/ice-9/boot-9.scm (make-record-type): Don't allow subtyping of
final types.
(%record-type-error): Remove helper.
(record-accessor, record-modifier): Use computed record type
predicate, to allow for subtyping.
(define-record-type): Adapt to %record-type-error going away; these
types are final so no accessor adaptation is needed.
* test-suite/tests/records.test: Add tests.
* doc/ref/api-data.texi (Records): Update.
* module/ice-9/boot-9.scm (record-type-vtable): Add slots for "flags"
and a parent vector.
(record-type-name, record-type-fields): Move up in the file.
(record-type-constructor, record-type-flags, record-type-parents): New
accessors.
(make-record-type): Take #:final? and #:parent keyword arguments.
(record-constructor): Delegate to record-type-constructor.
(record-predicate): For non-final types --types that can be extended
by subtyping -- implement an O(1) type predicate.
(define-record-type): Initialize the new fields.
* module/srfi/srfi-9.scm (%define-record-type): Initialize flags and
parent fields.
* module/ice-9/channel.scm: Remove. This file has had a bug since
2.0 or so that prevented loading the module; I can only conclude that
it hasn't worked for years.
* module/Makefile.am (SOURCES): Remove ice-9/channel.scm.
* module/ice-9/peg/using-parsers.scm (prec): Use SRFI-9 to define PEG
record types.
(peg:start, peg:end, peg:string, peg:tree, peg:substring): Implement
in a more efficient way.
* module/ice-9/safe-r5rs.scm: Define local versions of `case' and `cond'
that assume aux syntax is unbound. If this doesn't work, we can
switch to exporting aux syntax.
* module/ice-9/top-repl.scm (top-repl): Don't add (ice-9 r5rs) to the
REPL environment.
* module/ice-9/boot-9.scm (else, =>, ..., _): New definitions. These
are specified by the r6rs and the r7rs.
* module/ice-9/sandbox.scm (core-bindings): Include the aux syntax
definitions.
* module/rnrs/base.scm:
* module/rnrs.scm: Re-export aux syntax.
Since the change in 2.2 noted in the NEWS as "Fix literal matching for
module-bound literals", defining `_' makes `syntax-rules' and `match'
fail to recognize `_' as the catch-all literal. This change adapts the
recommendations to current practice in 2.2, as users have had to adapt
to this change.
* doc/ref/api-i18n.texi (Gettext Support): Update documentation.
* module/language/tree-il/analyze.scm (proc-ref?, gettext?): G_ is the
conventional abbreviation, not _.
* test-suite/tests/tree-il.test: Adapt.
* module/ice-9/command-line.scm: Use G_ instead of _.
