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# `mfdg' - overrides parts of general purpose testcase driver.
# Copyright (C) 1994 - 2001, 2003, 2009 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; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.


# This is a modified excerpt of dejagnu/lib/dg.exp.

load_lib dg.exp


# dg-test -- runs a new style DejaGnu test
#
# Syntax: dg-test [-keep-output] prog tool_flags default_extra_tool_flags
#
# PROG is the full path name of the file to pass to the tool (eg: compiler).
# TOOL_FLAGS is a set of options to always pass.
# DEFAULT_EXTRA_TOOL_FLAGS are additional options if the testcase has none.

#proc dg-test { prog tool_flags default_extra_tool_flags } {
proc dg-test { args } {
    global dg-do-what-default dg-interpreter-batch-mode dg-linenum-format
    global errorCode errorInfo
    global tool
    global srcdir               ;# eg: /calvin/dje/build/gcc/./testsuite/
    global host_triplet target_triplet

    set keep 0
    set i 0
    set dg-repetitions 1 ;# may be overridden by { dg-repetitions N }
    unset_timeout_vars

    if { [string index [lindex $args 0] 0] == "-" } {
        for { set i 0 } { $i < [llength $args] } { incr i } {
            if { [lindex $args $i] == "--" } {
                incr i
                break
            } elseif { [lindex $args $i] == "-keep-output" } {
                set keep 1
            } elseif { [string index [lindex $args $i] 0] == "-" } {
                clone_output "ERROR: dg-test: illegal argument: [lindex $args $i]"
                return
            } else {
                break
            }
        }
    }

    if { $i + 3 != [llength $args] } {
        clone_output "ERROR: dg-test: missing arguments in call"
        return
    }
    set prog [lindex $args $i]
    set tool_flags [lindex $args [expr $i + 1]]
    set default_extra_tool_flags [lindex $args [expr $i + 2]]

    set text "\[- A-Za-z0-9\.\;\"\_\:\'\`\(\)\!\#\=\+\?\&\*]*"

    set name [dg-trim-dirname $srcdir $prog]
    # If we couldn't rip $srcdir out of `prog' then just do the best we can.
    # The point is to reduce the unnecessary noise in the logs.  Don't strip
    # out too much because different testcases with the same name can confuse
    # `test-tool'.
    if [string match "/*" $name] {
        set name "[file tail [file dirname $prog]]/[file tail $prog]"
    }

    if {$tool_flags != ""} {
        append name " ($tool_flags)"
    }

    # Process any embedded dg options in the testcase.

    # Use "" for the second element of dg-do-what so we can tell if it's been
    # explicitly set to "S".
    set dg-do-what [list ${dg-do-what-default} "" P]
    set dg-excess-errors-flag 0
    set dg-messages ""
    set dg-extra-tool-flags $default_extra_tool_flags
    set dg-final-code ""

    # `dg-output-text' is a list of two elements: pass/fail and text.
    # Leave second element off for now (indicates "don't perform test")
    set dg-output-text "P"

    # Define our own "special function" `unknown' so we catch spelling errors.
    # But first rename the existing one so we can restore it afterwards.
    catch {rename dg-save-unknown ""}
    rename unknown dg-save-unknown
    proc unknown { args } {
        return -code error "unknown dg option: $args"
    }

    set tmp [dg-get-options $prog]
    foreach op $tmp {
        verbose "Processing option: $op" 3
        set status [catch "$op" errmsg]
        if { $status != 0 } {
            if { 0 && [info exists errorInfo] } {
                # This also prints a backtrace which will just confuse
                # testcase writers, so it's disabled.
                perror "$name: $errorInfo\n"
            } else {
                perror "$name: $errmsg for \"$op\"\n"
            }
            # ??? The call to unresolved here is necessary to clear `errcnt'.
            # What we really need is a proc like perror that doesn't set errcnt.
            # It should also set exit_status to 1.
            unresolved "$name: $errmsg for \"$op\""
            return
        }
    }

    # Restore normal error handling.
    rename unknown ""
    rename dg-save-unknown unknown

    # If we're not supposed to try this test on this target, we're done.
    if { [lindex ${dg-do-what} 1] == "N" } {
        unsupported "$name"
        verbose "$name not supported on this target, skipping it" 3
        return
    }

    # Run the tool and analyze the results.
    # The result of ${tool}-dg-test is in a bit of flux.
    # Currently it is the name of the output file (or "" if none).
    # If we need more than this it will grow into a list of things.
    # No intention is made (at this point) to preserve upward compatibility
    # (though at some point we'll have to).

    set results [${tool}-dg-test $prog [lindex ${dg-do-what} 0] "$tool_flags ${dg-extra-tool-flags}"];

    set comp_output [lindex $results 0];
    set output_file [lindex $results 1];

    #send_user "\nold_dejagnu.exp: comp_output1 = :$comp_output:\n\n"
    #send_user "\nold_dejagnu.exp: message = :$message:\n\n"
    #send_user "\nold_dejagnu.exp: message length = [llength $message]\n\n"

    foreach i ${dg-messages} {
        verbose "Scanning for message: $i" 4

        # Remove all error messages for the line [lindex $i 0]
        # in the source file.  If we find any, success!
        set line [lindex $i 0]
        set pattern [lindex $i 2]
        set comment [lindex $i 3]
        #send_user "Before:\n$comp_output\n"
        if [regsub -all "(^|\n)(\[^\n\]+$line\[^\n\]*($pattern)\[^\n\]*\n?)+" $comp_output "\n" comp_output] {
            set comp_output [string trimleft $comp_output]
            set ok pass
            set uhoh fail
        } else {
            set ok fail
            set uhoh pass
        }
        #send_user "After:\n$comp_output\n"

        # $line will either be a formatted line number or a number all by
        # itself.  Delete the formatting.
        scan $line ${dg-linenum-format} line
        switch [lindex $i 1] {
            "ERROR" {
                $ok "$name $comment (test for errors, line $line)"
            }
            "XERROR" {
                x$ok "$name $comment (test for errors, line $line)"
            }
            "WARNING" {
                $ok "$name $comment (test for warnings, line $line)"
            }
            "XWARNING" {
                x$ok "$name $comment (test for warnings, line $line)"
            }
            "BOGUS" {
                $uhoh "$name $comment (test for bogus messages, line $line)"
            }
            "XBOGUS" {
                x$uhoh "$name $comment (test for bogus messages, line $line)"
            }
            "BUILD" {
                $uhoh "$name $comment (test for build failure, line $line)"
            }
            "XBUILD" {
                x$uhoh "$name $comment (test for build failure, line $line)"
            }
            "EXEC" { }
            "XEXEC" { }
        }
        #send_user "\nold_dejagnu.exp: comp_output2= :$comp_output:\n\n"
    }
    #send_user "\nold_dejagnu.exp: comp_output3 = :$comp_output:\n\n"

    # Remove messages from the tool that we can ignore.
    #send_user "comp_output: $comp_output\n"
    set comp_output [prune_warnings $comp_output]

    if { [info proc ${tool}-dg-prune] != "" } {
        set comp_output [${tool}-dg-prune $target_triplet $comp_output]
        switch -glob $comp_output {
            "::untested::*" {
                regsub "::untested::" $comp_output "" message
                untested "$name: $message"
                return
            }
            "::unresolved::*" {
                regsub "::unresolved::" $comp_output "" message
                unresolved "$name: $message"
                return
            }
            "::unsupported::*" {
                regsub "::unsupported::" $comp_output "" message
                unsupported "$name: $message"
                return
            }
        }
    }

    # See if someone forgot to delete the extra lines.
    regsub -all "\n+" $comp_output "\n" comp_output
    regsub "^\n+" $comp_output "" comp_output
    #send_user "comp_output: $comp_output\n"

    # Don't do this if we're testing an interpreter.
    # FIXME: why?
    if { ${dg-interpreter-batch-mode} == 0 } {
        # Catch excess errors (new bugs or incomplete testcases).
        if ${dg-excess-errors-flag} {
            setup_xfail "*-*-*"
        }
        if ![string match "" $comp_output] {
            fail "$name (test for excess errors)"
            send_log "Excess errors:\n$comp_output\n"
        } else {
            pass "$name (test for excess errors)"
        }
    }

    # Run the executable image if asked to do so.
    # FIXME: This is the only place where we assume a standard meaning to
    # the `keyword' argument of dg-do.  This could be cleaned up.
    if { [lindex ${dg-do-what} 0] == "run" } {
        if ![file exists $output_file] {
            warning "$name compilation failed to produce executable"
        } else {
            set testname $name
            for {set rep 0} {$rep < ${dg-repetitions}} {incr rep} {
                # include repetition number in test name
                if {$rep > 0} { set name "$testname (rerun $rep)" }

                set status -1
                set result [${tool}_load $output_file]
                set status [lindex $result 0];
                set output [lindex $result 1];
                #send_user "After exec, status: $status\n"

                if { "$status" == "pass" } {
                    verbose "Exec succeeded." 3
                } elseif { "$status" == "fail" } {
                    # It would be nice to get some info out of errorCode.
                    if [info exists errorCode] {
                        verbose "Exec failed, errorCode: $errorCode" 3
                    } else {
                        verbose "Exec failed, errorCode not defined!" 3
                    }
                }
                
                if { [lindex ${dg-do-what} 2] == "F" } {
                    # Instead of modelling this as an xfail (via setup_xfail), 
                    # treat an expected crash as a success.
                    if { $status == "pass" } then { set status fail } else { set status pass }
                    set testtype "crash"
                } else { set testtype "execution" }
                
                $status "$name $testtype test"
                
                if { [llength ${dg-output-text}] > 1 } {
                    #send_user "${dg-output-text}\n"
                    if { [lindex ${dg-output-text} 0] == "F" } {
                        setup_xfail "*-*-*"
                    }
                    set texttmp [lindex ${dg-output-text} 1]
                    if { ![regexp $texttmp ${output}] } {
                        fail "$name output pattern test"
                    } else {
                        pass "$name output pattern test"
                    }
                    verbose -log "Output pattern $texttmp"
                    unset texttmp
                }
            }
        }
    }

    # Are there any further tests to perform?
    # Note that if the program has special run-time requirements, running
    # of the program can be delayed until here.  Ditto for other situations.
    # It would be a bit cumbersome though.

    if ![string match ${dg-final-code} ""] {
        regsub -all "\\\\(\[{}\])" ${dg-final-code} "\\1" dg-final-code
        # Note that the use of `args' here makes this a varargs proc.
        proc dg-final-proc { args } ${dg-final-code}
        verbose "Running dg-final tests." 3
        verbose "dg-final-proc:\n[info body dg-final-proc]" 4
        if [catch "dg-final-proc $prog" errmsg] {
            perror "$name: error executing dg-final: $errmsg"
            # ??? The call to unresolved here is necessary to clear `errcnt'.
            # What we really need is a proc like perror that doesn't set errcnt.
            # It should also set exit_status to 1.
            unresolved "$name: error executing dg-final: $errmsg"
        }
    }

    # Do some final clean up.
    # When testing an interpreter, we don't compile something and leave an
    # output file.
    if { ! ${keep} && ${dg-interpreter-batch-mode} == 0 } {
        catch "exec rm -f $output_file"
    }
}



# 
# Indicate that this test case is to be rerun several times.  This
# is useful if it is nondeterministic.  This applies to rerunning the
# test program only, not rebuilding it.
# The embedded format is "{ dg-repetitions N }", where N is the number
# of repetitions.  It better be greater than zero.
#
proc dg-repetitions { line value } {
    upvar dg-repetitions repetitions
    set repetitions $value
}