# Copyright (C) 2009-2020 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file is part of the GDB testsuite.  It tests the mechanism
# for defining new GDB commands in Scheme.

load_lib gdb-guile.exp

standard_testfile

if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
    return
}

# Skip all tests if Guile scripting is not enabled.
if { [skip_guile_tests] } { continue }

if ![gdb_guile_runto_main] {
    fail "can't run to main"
    return
}

# Test a simple command, and command? while we're at it.

gdb_test_multiline "input simple command" \
    "guile" "" \
    "(define test-cmd" "" \
    " (make-command \"test-cmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"test-cmd output, arg = ~a\\n\" arg)))))" "" \
    "(register-command! test-cmd)" "" \
    "end" ""

gdb_test "guile (print (command? test-cmd))" "= #t"
gdb_test "guile (print (command? 42))" "= #f"

gdb_test "test-cmd ugh" "test-cmd output, arg = ugh" "call simple command"

# Test a prefix command, and a subcommand within it.

gdb_test_multiline "input prefix command" \
    "guile" "" \
    "(register-command! (make-command \"prefix-cmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:completer-class COMPLETE_NONE" "" \
    "  #:prefix? #t" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"prefix-cmd output, arg = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "prefix-cmd ugh" "prefix-cmd output, arg = ugh" "call prefix command"

gdb_test_multiline "input subcommand" \
    "guile" "" \
    "(register-command! (make-command \"prefix-cmd subcmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"subcmd output, arg = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "prefix-cmd subcmd ugh" "subcmd output, arg = ugh" "call subcmd"

# Test a subcommand in an existing GDB prefix.

gdb_test_multiline "input new subcommand" \
    "guile" "" \
    "(register-command! (make-command \"info newsubcmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"newsubcmd output, arg = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "info newsubcmd ugh" "newsubcmd output, arg = ugh" "call newsubcmd"

# Test a command that throws gdb:user-error.

gdb_test_multiline "input command to throw error" \
    "guile" "" \
    "(register-command! (make-command \"test-error-cmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (throw-user-error \"you lose! ~a\" arg))))" "" \
    "end" ""

gdb_test "test-error-cmd ugh" "ERROR: you lose! ugh" "call error command"

# Test string->argv.

gdb_test "guile (raw-print (string->argv \"1 2 3\"))" \
    {= \("1" "2" "3"\)} \
    "(string->argv \"1 2 3\")"

gdb_test "guile (raw-print (string->argv \"'1 2' 3\"))" \
    {= \("1 2" "3"\)} \
    "(string->argv \"'1 2' 3\")"

gdb_test "guile (raw-print (string->argv \"\\\"1 2\\\" 3\"))" \
    {= \("1 2" "3"\)} \
    "(string->argv (\"\\\"1 2\\\" 3\")"

gdb_test "guile (raw-print (string->argv \"1\\\\ 2 3\"))" \
    {= \("1 2" "3"\)} \
    "(string->argv \"1\\\\ 2 3\")"

# Test user-defined guile commands.

gdb_test_multiline "input simple user-defined command" \
    "guile" "" \
    "(register-command! (make-command \"test-help\"" "" \
    "  #:doc \"Docstring\"" "" \
    "  #:command-class COMMAND_USER" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"test-cmd output, arg = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "test-help ugh" "test-cmd output, arg = ugh" \
    "call simple user-defined command"

# Make sure the command shows up in `help user-defined`.
test_user_defined_class_help {"test-help -- Docstring[\r\n]"}

# Make sure the command does not show up in `show user`.
gdb_test "show user test-help" "Not a user command\." \
    "don't show user-defined scheme command in `show user command`"

# Test expression completion on fields.

gdb_test_multiline "expression completion command" \
    "guile" "" \
    "(register-command! (make-command \"expr-test\"" "" \
    "  #:command-class COMMAND_USER" ""\
    "  #:completer-class COMPLETE_EXPRESSION" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"invoked on = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "complete expr-test bar\." \
    "expr-test bar\.bc.*expr-test bar\.ij.*" \
    "test completion through complete command"

set test "complete 'expr-test bar.i'"
send_gdb "expr-test bar\.i\t\t"
gdb_test_multiple "" "$test" {
    -re "expr-test bar\.ij \\\x07$" {
	send_gdb "\n"
	gdb_test_multiple "" $test {
	    -re "invoked on = bar.ij.*$gdb_prompt $" {
		pass "$test"
	    }
	}
    }
}

# Test using a function for completion.

gdb_test_multiline "completer-as-function command" \
    "guile" "" \
    "(register-command! (make-command \"completer-as-function\"" "" \
    "  #:command-class COMMAND_USER" ""\
    "  #:completer-class (lambda (self text word)" "" \
    "    (list \"1\" \"2\" \"3\"))" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    (display (format #f \"invoked on = ~a\\n\" arg)))))" "" \
    "end" ""

gdb_test "complete completer-as-function 42\." \
    "completer-as-function 42\.1.*completer-as-function 42\.2.*completer-as-function 42\.3" \
    "test completion with completion function"

# Test Scheme error in invoke function.

gdb_test_multiline "input command with Scheme error" \
    "guile" "" \
    "(register-command! (make-command \"test-scheme-error-cmd\"" "" \
    "  #:command-class COMMAND_OBSCURE" "" \
    "  #:invoke (lambda (self arg from-tty)" "" \
    "    oops-bad-spelling)))" "" \
    "end" ""

gdb_test "test-scheme-error-cmd ugh" \
    "Error occurred in Scheme-implemented GDB command." \
    "call scheme-error command"

# If there is a problem with object management, this can often trigger it.
# It is useful to do this last, after we've created a bunch of command objects.

gdb_test_no_output "guile (gc)"