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The recent commit 225ff2fa2fdb9e5169db5e2c06dc3b0053b775bb
titled "errors: avoid premature release of deferred warnings."
obviates the need for dealing with noise when detecting
errors from test cases.
* patmatch.tl: Remove macro-time-let around several
test cases.
* tests/012/ifa.tl: Likewise.
* tests/common.tl (macro-time-let): Macro removed.
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* share/txr/stdlib/error.tl (compile-error): Print the
error message on *stderr*, like we do with warnings.
This allows the programming environment to pick up the
error message and navigate to that line accordingly.
The error message is also output by the unhandled exception
logic but with a prefix that prevents parsing by the tooling.
To avoid sending double error messages to the interactive
user, we only issue the *stderr* message if *load-recursive*
is true.
* tests/common.tl (macro-time-let): New macro. This lets us
bind special variables around the macro-expansion of the body,
which is useful when expansion-time logic reacts to values
of special variables.
* tests/012/ifa.tl: Use macro-time-let to suppress *stderr*
around the expansion of the erroneous ifa form.
We now needs this because the error situation spits out a
message on *stderr*, in addition to throwing.
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* tests/012/ifa.tl: The "ambiguous" test case is not ambiguous
at all. The reason it was yielding :error previously was not
due to the ifa macro identifying an ambiguity but due to the
funcion < not accepting nil arguments. Since < now does accept
nil arguments, this test broke. Fixing this test, and adding
one that tests for the ambiguous case: multiple it-candidates
being rejected by ifa at expansion time.
* tests/common.tl (vtest): This macro requires maintenance. To
test for expansion-time failure, we must use expand, not just
macroexpand. In this case, the (ifa ...) macro call is wrapped
in a (let ...) so macroexpand won't do it. Secondly, the
expected value is an quote expression that must be evaluated
if we need its value in vtest itself. Otherwise it won't
compare equal to :error, since it is actually (quote :error).
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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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* tests/012/ifa.tl: New test cases which test the expansion
when the it-form is a place and there are forms before
and after it.
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* Makefile (TESTS_OUT): Don't use find to hunt down tests;
but rather wildcard. This way common.tl is not mistakenly
identified as an independent test file.
* tests/012/ifa.tl: Removed test code, placed in new file
which is loaded.
* tests/common.tl: New file.
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* share/txr/stdlib/ifa.tl (conda): New macro.
* tests/012/ifa.tl: Adding test for conda.
* txr.1: Documenting conda.
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* Makefile (TEST_OUT): Include .tl files.
(tst/%.out): New rule variant, from .tl prerequisite.
* tests/012/ifa.expected: New file.
* tests/012/ifa.tl: New file.
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