# Copyright 2022-2023 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/>.

# Basic DAP test.

require allow_dap_tests

load_lib dap-support.exp

standard_testfile

if {[build_executable ${testfile}.exp $testfile] == -1} {
    return
}

if {[dap_launch $testfile] == ""} {
    return
}

set obj [dap_check_request_and_response "set breakpoint on two functions" \
	     setFunctionBreakpoints \
	     {o breakpoints [a [o name [s function_breakpoint_here]] \
				 [o name [s do_not_stop_here]]]}]
set fn_bpno [dap_get_breakpoint_number $obj]

# This also tests that the previous do_not_stop_here breakpoint is
# cleared.
set obj [dap_check_request_and_response "set breakpoint on function" \
	     setFunctionBreakpoints \
	     {o breakpoints [a [o name [s function_breakpoint_here]]]}]
set fn_bpno [dap_get_breakpoint_number $obj]

set obj [dap_check_request_and_response "set breakpoint with invalid filename" \
	     setBreakpoints \
	     [format {o source [o path [s nosuchfilename.c]] breakpoints [a [o line [i 29]]]}]]

set line [gdb_get_line_number "BREAK"]
set obj [dap_check_request_and_response "set breakpoint by line number" \
	     setBreakpoints \
	     [format {o source [o path [%s]] breakpoints [a [o line [i %d]]]} \
		  [list s $srcfile] $line]]
set line_bpno [dap_get_breakpoint_number $obj]

# Check the new breakpoint event.
set ok 1
foreach d [lindex $obj 1] {
    if {[dict get $d type] != "event"
	|| [dict get $d event] != "breakpoint"} {
	continue
    }
    if {[dict get $d body reason] == "new"
	&& [dict get $d body breakpoint verified] == "true"} {
	set ok 0
	break
    }
}
if {$ok} {
    pass "check lack of new breakpoint event"
} else {
    fail "check lack of new breakpoint event"
}

# Check that there are breakpoint locations on each line between FIRST
# and BREAK.
set first_line [gdb_get_line_number "FIRST"]
set last_line [expr {$line - 1}]
set obj [dap_check_request_and_response "breakpoint locations" \
	     breakpointLocations \
	     [format {o source [o path [%s]] line [i %d] endLine [i %d]} \
		  [list s $srcfile] $first_line $last_line]]
# We know gdb returns the lines in sorted order.
foreach entry [dict get [lindex $obj 0] body breakpoints] {
    gdb_assert {[dict get $entry line] == $first_line} \
	"line $first_line in result"
    incr first_line
}

# Note that in this request, we add a 'source' field to the
# SourceBreakpoint object.  This isn't in the spec but it once caused
# an incorrect exception in the Python code.  See PR dap/30820.
set obj [dap_check_request_and_response "reset breakpoint by line number" \
	     setBreakpoints \
	     [format {o source [o path [%s]] \
			  breakpoints [a [o source [o path [%s]] \
					      line [i %d]]]} \
		  [list s $srcfile] [list s $srcfile] $line]]
set new_line_bpno [dap_get_breakpoint_number $obj]
gdb_assert {$new_line_bpno == $line_bpno} "re-setting kept same breakpoint number"

# This uses "&address_breakpoint_here" as the address -- this is a
# hack because we know how this is implemented under the hood.
set obj [dap_check_request_and_response "set breakpoint by address" \
	     setInstructionBreakpoints \
	     {o breakpoints [a [o instructionReference [s &address_breakpoint_here]]]}]
set insn_bpno [dap_get_breakpoint_number $obj]

set response [lindex $obj 0]
set bplist [dict get $response body breakpoints]
set insn_pc [dict get [lindex $bplist 0] instructionReference]

dap_check_request_and_response "start inferior" configurationDone
dap_wait_for_event_and_check "inferior started" thread "body reason" started

# While waiting for the stopped event, we might receive breakpoint changed
# events indicating some breakpoint addresses were relocated.  Update INSN_PC
# if necessary.
lassign [dap_wait_for_event_and_check "stopped at function breakpoint" stopped \
	    "body reason" breakpoint \
	    "body hitBreakpointIds" $fn_bpno] unused objs
foreach obj $objs {
    if { [dict get $obj "type"] != "event" } {
	continue
    }

    if { [dict get $obj "event"] != "breakpoint" } {
	continue
    }

    set body [dict get $obj "body"]

    if { [dict get $body "reason"] != "changed" } {
	continue
    }

    set breakpoint [dict get $body "breakpoint"]
    set breakpoint_id [dict get $breakpoint "id"]

    if { $breakpoint_id != $insn_bpno } {
	continue
    }

    set insn_pc [dict get $breakpoint "instructionReference"]
}

set obj [dap_check_request_and_response "evaluate global in function" \
	     evaluate {o expression [s global_variable]}]
dap_match_values "global value in function" [lindex $obj 0] \
    "body result" 23

dap_check_request_and_response step stepIn {o threadId [i 1]}
dap_wait_for_event_and_check "stopped after step" stopped "body reason" step

set obj [dap_check_request_and_response "evaluate global second time" \
	     evaluate {o expression [s global_variable]}]
dap_match_values "global value after step" [lindex $obj 0] \
    "body result" 24

dap_check_request_and_response "continue to address" continue \
    {o threadId [i 1]}
dap_wait_for_event_and_check "stopped at address breakpoint" stopped \
    "body reason" breakpoint \
    "body hitBreakpointIds" $insn_bpno

dap_check_request_and_response "continue to line" continue \
    {o threadId [i 1]}
dap_wait_for_event_and_check "stopped at line breakpoint" stopped \
    "body reason" breakpoint \
    "body hitBreakpointIds" $line_bpno \
    "body allThreadsStopped" true

dap_check_request_and_response "return from function" stepOut \
    {o threadId [i 1]}
dap_wait_for_event_and_check "stopped after return" stopped \
    "body reason" step

set obj [dap_check_request_and_response "evaluate global in main" \
	     evaluate {o expression [s global_variable]}]
dap_match_values "global value in main" [lindex $obj 0] \
    "body result" 25

set obj [dap_check_request_and_response "set global in main" \
	     setExpression {o expression [s global_variable] value [s 23]}]
dap_match_values "global value in main after set" [lindex $obj 0] \
    "body value" 23 \
    "body type" int

set obj [dap_request_and_response \
	     evaluate {o expression [s nosuchvariable]}]
set response [lindex $obj 0]
gdb_assert { [dict get $response success] == "false" } "result of invalid request"

set obj [dap_check_request_and_response "disassemble one instruction" \
	     disassemble \
	     [format {o memoryReference [s %s] instructionCount [i 1]} \
		  $insn_pc]]
set response [lindex $obj 0]
gdb_assert { [dict exists $response body instructions] } "instructions in disassemble output"
foreach insn [dict get $response body instructions] {
    gdb_assert {[dict exists $insn instructionBytes]} \
	"instruction bytes in disassemble output"
    set bytes [dict get $insn instructionBytes]
    gdb_assert {[string length $bytes] % 2 == 0} \
	"even number of digits"
    gdb_assert {[regexp "^\[0-9A-Fa-f\]+\$" $bytes]} \
	"instructionBytes is hex"
}

set obj [dap_check_request_and_response "command repl" \
	     evaluate {o expression [s {output 23}] context [s repl]}]
set response [lindex $obj 0]
gdb_assert {[dict get $response body result] == 23}

dap_shutdown