* 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.
* module/system/vm/program.scm (source:line-for-user): New exported
procedure, returns a 1-indexed line, suitable for presentation to a
user.
(write-program): Use source:line-for-user when making fallback names.
* module/system/vm/coverage.scm (coverage-data->lcov):
* module/language/assembly/disassemble.scm (source->string):
* module/system/repl/debug.scm (print-frame): Use source:line-for-user.
* libguile/frames.h:
* libguile/frames.c (scm_frame_stack_pointer): New function.
* module/system/repl/debug.scm (print-registers): New function, prints
out registers.
* module/system/repl/command.scm (registers): New debugging
meta-command.
(inspect): Not a stack-command, a normal meta-command.
* module/system/vm/trap-state.scm (add-trap-at-source-location!): New
proc.
* module/system/repl/command.scm (break-at-source): New repl
meta-command. Doesn't work as well as it could now because it doesn't
know about nested functions, but that's coming.
* module/system/vm/trap-state.scm (list-traps): Just return the integers
identifying the traps; people can use trap-name to get the names.
* module/system/repl/command.scm (traps): Adapt.
* module/system/vm/trace.scm (print-return, print-application)
(frame-return-values): Factored out of other things.
(trace-calls-to-procedure): New proc, installs a trap tracing only
calls to the given proc.
(trace-calls-in-procedure): Refactor a bit.
* module/system/vm/trap-state.scm (add-trace-at-procedure-call!): New
proc.
* module/system/repl/command.scm (tracepoint): New command, installs a
tracepoint on a procedure.
* module/system/vm/trap-state.scm (with-default-trap-handler): Don't
enable traps if we are setting a handler of #f.
* module/system/repl/error-handling.scm (call-with-error-handling): Add
#:trap-handler arg.
* module/system/repl/repl.scm (run-repl): Only have traps enabled while
running the thunk. Otherwise we trace on procedures called as part of
the repl.
* module/system/repl/command.scm (profile, trace, inspect)
(pretty-print): Use repl-prepare-eval-thunk instead of the lower-level
compile and make-program.
* module/system/vm/trap-state.scm: New file, tracks a VM-specific set of
traps.
* module/Makefile.am: Add trap-state.scm.
* module/system/repl/error-handling.scm: While in a with-error-handling
block, bind a default trap handler that invokes a recursive prompt.
* module/system/repl/command.scm: Add a `break' repl meta-command.
* module/system/repl/error-handling.scm: use the error string to
construct the <debug> instance.
* module/system/repl/command.scm: new debug command `error-message'
that extracts the new <debug> field, available to stack commands as
`message'.
* doc/ref/scheme-using.texi: documentation for new command.
* module/system/repl/debug.scm: <debug> stores the error string in a
new field.
* module/system/repl/error-handling.scm (call-with-error-handling):
Previous post-error changed to "report"; now "catch", the default,
doesn't re-print the error.
* module/system/repl/repl.scm (run-repl): Run the thunk in a stack in a
prompt, similar to the default prompt. Gives proper backtraces.
* module/system/repl/error-handling.scm (call-with-error-handling):
Narrow one more outer frame, for the %start-stack thunk invocation.
* module/ice-9/boot-9.scm (%start-stack): Reindent.
* module/system/repl/common.scm: Use (ice-9 history). Turns on value
history by default.
(repl-default-options): Expand the format of options to include an
optional value transformer, run when setting a value. Add prompt and
value-history options.
(repl-prepare-eval-thunk): Use repl-option-ref.
(repl-option-ref): Error if the option is unknown.
(repl-option-set!, repl-default-option-set!): Error if the option is
unknown. Pass the val through the transformer procedure.
(repl-default-prompt-set!): Just use repl-default-option-set!.
* module/system/repl/command.scm (option): Update for the new options
format.
* module/system/repl/common.scm (repl-default-options): Heap-allocate
the repl-default-options, to avoid mutating a literal.
(make-repl): Copy repl-default-options.
* module/system/repl/repl.scm (abort-on-error): New helper.
(run-repl): Don't enter the debugger during parsing or compilation of
a repl expression. If you want to debug compilation, run compilation
from the repl, not as part of the repl.
* module/system/repl/debug.scm (print-locals): Run the before-print-hook
on the values, so we can hook into (ice-9 history) if available. Don't
bother printing binding indices. Give a little per-line-prefix.
* module/system/repl/command.scm (read-command): Remove a pk.
* module/system/repl/repl.scm (run-repl): Export. Use % and abort to
implement the prompt.
* module/system/repl/debug.scm: New file, defines a data type to hold
state for a debugger stack, and some helper procedures to print the
stack or print a frame. Most pieces are from (system vm debug).
* module/system/repl/error-handling.scm: New file, implements
call-with-error-handling and with-error-handling, and instead of going
into a debugger, we go into a recursive repl that happens to have
debugging information. Will be removing the old debugger from (system
vm debug) shortly.
* module/Makefile.am (SYSTEM_SOURCES): Add error-handling and debug scm
files.
* module/system/repl/repl.scm (prompting-meta-read): Better error
handling -- we don't want to go into a debugger when reading a
command.
(start-repl): Add #:debug keyword argument, and just dispatch to
run-repl.
(run-repl): New function, with the guts of the old start-repl. Added a
prompt, to which a throw to 'quit will abort.
* module/system/repl/common.scm (repl-prepare-eval-thunk): New
helper. In the future we will use this to not enter the debugger on
errors that happen at compile time.
(repl-eval): Use repl-prepare-eval-thunk.
(repl-print): Run the before-print-hook when printing a value.
* module/system/repl/command.scm (*command-table*): Move `option' to the
`system' group. Move `trace' to the `profile' group. Add `debug' and
`inspect' groups.
(command-abbrevs): Rename from command-abbrev, and allow multiple
abbreviations.
(display-group): Fix the case where abbrev? was #f.
(display-summary): Fix alignment of the command and
abbreviations. Allow multiple abbreviations.
(read-command): Rename from read-datum, and have better error
handling.
(meta-command): Better error handling.
(define-meta-command): Better error handling.
(help, show, import, compile, disassemble, time, profile, trace): Fix
docstrings and error messages.
(define-stack-command): New helper, for commands that operate on a
saved stack.
(backtrace, up, down, frame, procedure, locals): New debugger
commands, in the REPL now.
(inspect, pretty-print): New "inspect" commands.
* module/ice-9/boot-9.scm (*repl-stack*): Instead of repl-level, have a
stack.
(batch-mode?): Change to poke the stack.
* module/ice-9/deprecated.scm (set-batch-mode?!): Update deprecation
method.
* module/system/repl/common.scm (repl-prompt): Update to poke
*repl-stack* to get the level.
* module/system/repl/repl.scm (start-repl): Bind *repl-stack*
appropriately.
* module/system/repl/common.scm (<repl>): Add inport and outport fields
and accessors.
(make-repl): Add optional "debug" argument. Bind inport and outport to
the current inport and output ports at the time of repl creation.
(repl-read): Read from the repl inport.
(repl-print): Write to the repl outport.
* module/system/repl/command.scm (read-datum, read-line, meta-command):
Respect repl-inport, and bind the outport of meta-commands to the repl
outport.
