* module/system/repl/command.scm (language): Set the
*current-language*.
* module/system/repl/repl.scm (start-repl): Create a new dynamic scope
for *current-language*.
* module/system/repl/common.scm (make-repl): Fix to accept language
objects in addition to symbols. Fixes http://debbugs.gnu.org/9857.
Thanks to Tristan Colgate for the report.
* module/system/repl/command.scm (time): Use the high-precision timers
instead of stime(2). Changes the output format of `,time' too;
perhaps there is a better way.
* module/system/repl/server.scm (run-server): Ignore SIGPIPE when we run
a server, as otherwise a rudely disconnected client could cause the
server to quit. Thanks to John Proctor for the report, and Detlev
Zundel for the debugging.
* module/language/objcode/spec.scm (decompile-value): Don't assume that
`error' will handle format strings appropriately.
* module/system/repl/command.scm (disassemble): A more human error when
you disassemble a non-procedure.
Bug reported by Andrew Horton.
* module/system/repl/error-handling.scm (call-with-error-handling):
Do _not_ enter the debugger if the thrown key is in `pass-keys'.
Previously, for example, (throw 'quit) entered the debugger when run
from the REPL, despite the fact that 'quit is in `pass-keys'.
* module/system/repl/command.scm:
* module/system/repl/debug.scm (terminal-width): Move terminal-width
here, make it thread-local, and export it.
(print-locals, print-frame, print-frames): Default width to
terminal-width.
* module/system/repl/error-handling.scm (call-with-error-handling): Add
`report' and `backtrace' on-error handlers.
* module/system/repl/common.scm (repl-default-options): Add on-error
REPL option, defaulting to `debug', but which may be changed.
* module/system/repl/repl.scm (run-repl): Pass the #:on-error REPL
option to call-with-error-handling.
* module/system/repl/command.scm (terminal-width): New parameter that
will use the true terminal width if unset.
(backtrace, locals): Default to (terminal-width).
(width): Simplify.
This meta-command allows one to set the default number of columns
that output from ,backtrace and ,locals shall occupy.
* doc/ref/scheme-using.texi (Debug Commands): document ,width
* module/system/repl/command.scm (*width*): new var
(backtrace, locals): use *width* in optarg
(width): new meta-command
* module/system/repl/repl.scm (read-comment, read-scheme-line-comment)
(read-scheme-datum-comment): New helpers.
(meta-reader): Take a language instead of a reader. If we have a
nonwhitespace char, first check to see that it's a comment, and if so,
read it off and loop.
(prompting-meta-read): Call meta-reader with the lang.
* module/system/repl/repl.scm (flush-leading-whitespace): Rename from
next-char.
(meta-reader): Use flush-leading-whitespace.
(run-repl): Use flush-to-newline after the evaluation, which seems to
be the same as what we did before.
* module/system/repl/repl.scm (flush-all-input): New helper.
(prompting-meta-read): Flush all input on a read error, as we could be
within some expression or a string or something.
* module/system/repl/error-handling.scm (error-string): Just use
print-exception instead of rolling our own printer.
(call-with-error-handling): Simplify.
* module/system/repl/error-handling.scm (display-syntax-error)
(error-string): Until we get the exception-printing patch merged in,
copy display-syntax-error into error-handling so that we avoid
display-error. Fixes bug 32365.
* module/system/repl/command.scm (warranty, copying, version): Use
`define-meta-command' to define these procedures, so they are entered
into the *command-infos* table.
Besides allowing user-defined meta-commands, this change also refactors
the meta-command machinery to split reading a command's arguments from
the procedure actually implementing it, and hence allows nesting
meta-commands. As an example of such a command, ",in" is added as a new
meta-command.
* module/system/repl/command.scm: Export `define-meta-command'.
(*command-module*): Replaced by the hash table `*command-infos*'.
(command-info, make-command-info, command-info-procedure)
(command-info-arguments-reader): New procedures, encapsulating the
information about a meta-command.
(command-procedure): Adapted to use the `command-info' lookup
procedure.
(read-command-arguments): New auxiliary procedure invoking a command's
argument reader procedure.
(meta-command): Adapted to the split of reading arguments and
executing a command.
(add-meta-command!): New auxiliary procedure, registers a meta
command's procedure and argument reader into `*command-infos* and
`*command-table*.
(define-meta-command): Extended to allow specification of the command's
category; split the argument reader and actual command procedure.
(guile:apropos, guile:load, guile:compile-file, guile:gc): Remove these
aliases, they are unnecessary as we now use a hash table instead of the
module to store the commands.
(in): New meta-command, which evaluates an expression, or alternatively
executes another meta-command, in the context of a specific module.
* doc/ref/scheme-using.texi (Module Commands): Document the `in'
meta-command.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Fixes bug in repl meta-commands after activating readline, which changes
the current input port.
* module/system/repl/common.scm (<repl>): Remove inport and outport
fields.
(make-repl): Adapt.
(repl-read, repl-print): Just read and write to the current ports.
* module/system/repl/repl.scm (meta-reader): Meta-read from the current
input port.
* module/system/repl/command.scm (read-command, define-meta-command):
Read from the current input port.
* module/system/repl/repl.scm (display-syntax-error): New helper,
displays a syntax error.
(abort-on-error, run-repl): Use it.
* libguile/throw.c (handler_message): Re-code the same thing in C.
* module/system/repl/debug.scm (print-frame): Add #:next-source? arg,
for when print-frame should use frame-next-source instead of
frame-source.
(print-frames): Add #:for-trap? arg. If true, the 0th frame should be
printed with frame-next-source.
* module/system/repl/command.scm (define-stack-command): Introduce
for-trap? into the lexical env.
(backtrace, up, down, frame): Update to do the right thing regarding
#:for-trap?.
* module/language/tree-il/analyze.scm (format-analysis): Don't warn on
non-literal format string if the format string is a lexical ref to a
variable named "fmt". A slight hack, but effective :)
* module/system/repl/command.scm (display-stat): Rename the format
string to "fmt".
* module/system/repl/debug.scm (<debug>): New field, `for-trap?'. True
if the stack is for a trap, and thus the top frame should use
frame-next-source instead of frame-source.
* module/system/repl/command.scm (repl-pop-continuation-resumer)
(repl-next-resumer):
* module/system/repl/error-handling.scm (call-with-error-handling):
Update callers.
* module/system/repl/server.scm: New module, listens on a socket for
connections, then serves repls to those sockets.
* module/Makefile.am: Add repl server.
* module/system/repl/error-handling.scm (error-string): Refactor a
little.
(call-with-error-handling): Ensure a trailing newline when printing
the error-msg.
* module/system/repl/repl.scm (run-repl): We don't know the name of the
meta-command here.
* module/system/repl/error-handling.scm (error-string): Don't call
`display-error' when STACK is empty.
(call-with-error-handling): Display ERROR-MSG instead of using
`format', since ERROR-MSG may contain `format' escapes.
* module/system/repl/repl.scm (run-repl): Add missing argument to
`format'.
* module/system/vm/trace.scm (print-application, print-return): Change
to add more whitespace, as (ice-9 debug) did.
(call-with-trace): Rename from vm-trace, and make the vm a keyword
argument.
* module/system/repl/command.scm: Don't autoload (system vm profile).
(trace): Update for call-with-trace name change.
* module/system/vm/traps.scm (trap-matching-instructions): New trap,
just installs a next hook and runs the handler when a predicate
succeeds.
* module/system/vm/trap-state.scm (add-ephemeral-stepping-trap!): New
procedure, uses trap-matching-instructions with an appropriate
predicate to handle step, stepi, next, and nexti repl metacommands.
* module/system/repl/command.scm (step, step-instruction, next)
(next-instruction): New repl debugger commands.
* module/system/repl/error-handling.scm (call-with-error-handling): If
the given index is false, assume this was an ephemeral trap, and don't
print a welcome message or reference the trap by index.
