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The functions sys:expand, sys:expand* and
sys:expand-with-free-refs are now in the usr package and
documented for public use.
* eval.c (eval_init): Move registrations of the symbools
expand, expand* and expand-with-free-refs from the
system package to the user package.
* share/txr/stdlib/awk.tl (sys:awk-mac-let, awk): Uses of
sys:expand drop the sys: prefix.
* share/txr/stdlib/op.tl (sys:op-alpha-rename): Likewise.
* share/txr/stdlib/place.tl (call-upudate-expander,
call-clobber-expander, call-delete-expander, sys:placelet-1):
Likewise.
* tests/011/macros-2.txr, tests/012/struct.tl: Likewise.
* txr.1: Documented expand, expand* and expand-with-free-refs.
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* eval.c (do_expand): When a defmacro or defsymacro form is
traversed, do not evaluate it, except in backward
compatibility mode. Unfortunately, this breaks some code.
* tests/011/macros-1.txr: A defmacro form has to be wrapped in
macro-time.
* tests/011/macros-2.txr: Likewise.
* tests/011/mandel.txr: Likewise.
* tests/012/man-or-boy.tl (defun-cbn): This macro generates a
progn which which expects that a defmacro form will come into
effect for the subsequent lambda in the same form. We must
wrap it in macro-time to make this happen now.
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* eval.c (eval_exception): New static function.
(eval_error): Reduced to wrapper around eval_exception.
(eval_warn): New function.
(me_op): Bind the rest symbol in a shadowing env to suppress
watnings about unbound rest.
(do_expand): Throw a warning when a bindable symbol is
traversed that has no binding.
(expand): Don't install atoms as last_form_expanded.
* lib.c (warning_s, restart_s, continue_s): New symbol
variables.
(obj_init): Initialize new symbol variables.
* lib.h (warning_s, restart_s, continue_s): Declared.
* lisplib.c (except_set_entries): New entries for
ignwarn and macro-time-ignwarn.
* parser.c (repl_warning): New static function.
(repl): Use repl_warning function as a handler for
warning exceptions: to print their message and then
continue by throwing a continue exception.
* parser.y (warning_continue): New static function.
(parse_once): Use warning_continue to ignore warnings.
In other words, we suppress warnings from Lisp that is
mixed into TXR pattern language code, because this
produces too many false positives.
* share/txr/stdlib/except.tl (ignwarn, macro-time-ignwarn):
New macros.
* share/txr/stdlib/place.tl (call-update-expander,
call-clobber-expander, call-delete-expander): Ignore warnings
around calls to sys:expand, because of some gensym-related
false positives (we expand code into which we inserted some
gensyms, without having inserted the constructs which
bind them.
* tests/011/macros-2.txr: Suppress unbound variable
warnings from a test case.
* tests/012/ifa.tl: Bind unbound x y variables in one
test case.
* tests/012/struct.tl: Suppress unbound variable
warnings in some test cases.
* uwind.c (uw_throw): If a warning is unhandled, then
print its message with a "warning" prefix and then
throw a continue exception.
(uw_register_subtype): Eliminate the check for sub
already being a subtype of sup. This allows us to
officially register new types against t.
(uw_late_init): Register continue exception type as a
subtype of the restart type.
Formally register warning type.
* txr.1: Documented ignwarn.
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* eval.c (builtin, eval_initing): New global variable.
(op_defun, op_defmacro): During initialization, record functions
and macros in builtin hash.
(builtin_reject_test): New static function.
(expand_macrolet): Perform builtin reject test for fbind, lbind,
and macrolet.
(regfun, reg_mac): Add symbol to builtin hash.
(eval_init): GC-protect new hash table variable and initialize it.
Set eval_initing to true over eval initialization.
The flip function is renamed fo flipargs.
(eval_compat_fixup): New function, for dealing with the
operator/function conflict over flip.
* eval.h (eval_compat_fixup): Declared.
* lib.c (compat_fixup): Call eval_compat_fixup.
* tests/011/macros-2.txr: This test was defining a macro called
while which is now illegal. Renamed to whilst.
* tests/011/macros-2.expected: Regenerated.
* txr.1: Function flip renamed to flipargs and documented in
Compatibility section.
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The operators set, inc, dec, pop and others are now macros
which generate code, rather than built-in special forms
that use "C magic". Moreover, new such macros are easy to write, and
several new ones are already available. Moreover, new kinds of
assignable places are easy to create.
* place.tl: New file.
* lisplib.c, lisplib.h: New files.
* Makefile (OBJS): New target, lisplib.o.
(GEN_HDRS): New variable.
(LISP_TO_C_STRING): New recipe macro, with rule.
(clean): Remove generated headers named in $(GEN_HDRS).
* eval.c (dec_s, push_s, pop_s, flip_s, del_s): Variables removed.
(setq_s): New variable.
(lookup_var, lokup_sym_lisp_1, lookup_var_l, lookup_fun, lookup_mac,
lookup_symac, lookup_symac_lisp1): Trigger the delayed loading of
libraries for undefined global symbols, and re-try the lookup.
(op_modplace, dwim_loc, force_l): Static functions removed.
(op_setq): New static function.
(eval_init): Initialize setq_s; remove initializations of
removed variables; remove registrations for op_modplace;
add registration for sys:setq, sys:rplaca, sys:rplacd,
sys:dwim-set and sys:dwim-del intrinsics.
Call lisplib_init to initialize the dynamic library loading module.
* lib.c (sys_rplaca, sys_rplacd): New functions, differing
in return value from rplaca and rplacd.
(ref, refset): Handle hash table.
(dwim_set, dwim_del): New functions.
* lib.h (sys_rplaca, sys_rplacd, dwim_set, dwim_del): Declared.
* genvim.txr: Include place.tl in scan.
* tests/010/seq.txr: The del operator test
case no longer throws at run-time but at macro-expansion time, so the
test case is simply removed.
* tests/010/seq.expected: Updated output.
* tests/011/macros-2.txr: Reset *gensym-counter* to zero, because
the textual output of the test case includes gensyms, whose numberings
fluctuate with the content of the new Lisp library material.
* tests/011/macros-2.expected: Updated output.
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and let shadowing symacro.
* tests/011/macros-2.expected: Regenerated
* txr.vim: Regenerated.
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of identifiers to rule this out from being the first character of a
symbol which has no prefix. Recognize the ^ character as a token in the
NESTED state.
* lib.c (obj_print, obj_pprint): Render sys:qquote as ^.
* parser.y (choose_quote): Function removed.
(n_expr): Recognize '^' as quasiquote. Removed all the "smart quote"
hacks that try to make quote behave as quote or quasiquote, or try to
cancel out unquotes and quotes.
* tests/009/json.txr: Fixed to ^ quasiquote.
* tests/010/reghash.txr: Likewise.
* tests/011/macros-2.txr: Likewise.
* tests/011/mandel.txr: Likewise.
* tests/011/special-1.txr: Likewise.
* txr.1: Updated docs.
* genvim.txr: Revamped definitions for txr_ident and txl_ident so that
unqualified identifiers cannot start with # or ^, but ones with @ or :
in front can start with these characters.
* txr.vim: Regenerated.
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* tests/011/macros-1.expected: New file.
* tests/011/macros-1.txr: New file.
* tests/011/macros-2.expected: New file.
* tests/011/macros-2.txr: New file.
* tests/011/special-1.expected: New file.
* tests/011/special-1.txr: New file.
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