# Copyright 2018-2020 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/>.

load_lib "ada.exp"

if { [skip_ada_tests] } { return -1 }

standard_ada_testfile bla
set cfile "foo"
set csrcfile ${srcdir}/${subdir}/${testdir}/${cfile}.c
set cobject [standard_output_file ${cfile}.o]

gdb_compile "${csrcfile}" "${cobject}" object [list debug]

# Note we don't test the "none" (no -fgnat-encodings option) scenario
# here, because "all" and "minimal" cover the cases, and this way we
# don't have to update the test when gnat changes its default.
foreach_with_prefix scenario {all minimal} {
    set flags [list debug additional_flags=-largs \
		   additional_flags=${cobject} \
		   additional_flags=-margs \
		   additional_flags=-fgnat-encodings=$scenario]

    if {[gdb_compile_ada "${srcfile}" "${binfile}" executable $flags] != ""} {
	return -1
    }

    clean_restart ${testfile}

    set bp_location [gdb_get_line_number "STOP" ${testdir}/foo.c]
    runto "foo.c:$bp_location"

    gdb_test_no_output "set print frame-arguments all"

    # Here is the scenario:
    #  - Once stopped in a C function, with language_mode set to auto, print
    #    backtrace, we should see the Ada frame arguments printed using Ada
    #    syntax.
    #  - Set language to C, then check that printing backtrace shows the Ada
    #    frame arguments using C syntax.
    #  - Set language back to auto, check language mode value, then print
    #    backtrace, we should see Ada frame arguments printed using Ada C
    #    syntax.

    gdb_test "show lang" \
	"The current source language is \"auto; currently c\"." \
	"show language when set to 'auto; c'"

    gdb_test "bt" \
	"#1  $hex in pck\\.call_me \\(s=\"test\"\\).*" \
	"backtrace with auto: c"

    gdb_test_no_output "set language c" \
	"Set current source language to \"manual; currently c\"."

    gdb_test "show lang" \
	"The current source language is \"c\"." \
	"show language when set to 'c'"

    # With -fgnat-encodings=minimal, this works properly in C as well.
    if {$scenario == "minimal"} {
	set expected "\"test\""
    } else {
	set expected "{P_ARRAY = $hex, P_BOUNDS = $hex}"
    }
    gdb_test "bt" \
	"#1  $hex in pck\\.call_me \\(s=$expected\\).*" \
	"backtrace with language forced to 'c'"

    gdb_test_no_output "set language auto" \
	"Set current source language to \"auto; currently c\"."

    gdb_test "show lang" \
	"The current source language is \"auto; currently c\"." \
	"show language when set back to 'auto; c'"

    gdb_test "bt" \
	"#1  $hex in pck\\.call_me \\(s=\"test\"\\).*" \
	"backtrace with language back to 'auto; c'"
}