# Copyright (C) 1988, 90, 91, 92, 1994, 1996, 1997 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 2 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, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# Please email any bugs, comments, and/or additions to this file to:
# bug-g++@prep.ai.mit.edu

# This file was written by Rob Savoye. (rob@cygnus.com)
# With modifications by Mike Stump <mrs@cygnus.com>.

# These tests come from the original DejaGnu test suite 
# developed at Cygnus Support. If this isn't deja gnu, I
# don't know what is.
#
# Language independence is achieved by:
#
# 1) Using global $tool to indicate the language (eg: gcc, g++, etc.).
#    This should only be used to look up other objects.  We don't want to
#    have to add code for each new language that is supported.  If this is
#    done right, no code needs to be added here for each new language.
#
# 2) Passing compiler options in as arguments.
#
# We require a bit of smarts in our caller to isolate us from the vagaries of
# each language.  See old-deja.exp for the g++ example.

# Useful subroutines.

# process-option -- Look for and process a test harness option in the testcase.
#
# PROG is the pathname of the testcase.
# OPTION is the string to look for.
# MESSAGE is what to print if $verbose > 1.
# FLAG_NAME is one of ERROR, WARNING, etc.
# PATTERN is ???

proc process-option { prog option message flag_name pattern } {
    global verbose

    set result ""

    set tmp [grep $prog "$option.*" line]
    if ![string match "" $tmp] then {
	foreach i $tmp {
	    #send_user "Found: $i\n"
	    set xfail_test 0
	    set triplet_match 0
	    regsub "\\*/$" [string trim $i] "" i
	    if [regexp "LINE +\[0-9\]+" $i xopt] then {
		regsub "LINE" $xopt "" xopt;
		regsub "LINE +\[0-9\]+" $i "" i
		set i [lreplace $i 0 0 [expr "${xopt}-0"]];
	    }
	    if [regexp "XFAIL( +\[^ \]+-\[^ \]+-\[^ \]+)*" $i xopt] then {
		set xfail_test 1
		regsub "XFAIL( +\[^ \]+-\[^ \]+-\[^ \]+)*" $i "" i
		regsub "XFAIL" $xopt "" xopt
		if ![string match "" [string trim $xopt]] then {
		    foreach triplet $xopt {
			if [istarget $triplet] {
			    set triplet_match 1;
			    break;
			}
		    }
		} else {
		    set triplet_match 1
		}
	    }
	    set compos [expr [llength $option] + 1] ;# Start of comment, if any
	    if { $xfail_test && $triplet_match } then {
		lappend result [list [lindex $i 0] "X$flag_name" [lrange $i $compos end] "$pattern"]
	    } else {
		lappend result [list [lindex $i 0] "$flag_name" [lrange $i $compos end] "$pattern"]
	    }
	    if { $verbose > 1 } then {
		if [string match "" [lrange $i $compos end]] then {
		    send_user "Found $message for line [lindex $i 0]\n"
		} else {
		    send_user "Found $message \"[lrange $i $compos end]\" for line [lindex $i 0]\n"
		}
	    }
	}
    }

    #send_user "Returning: $result\n"
    return $result
}

# old-dejagnu-init -- set up some statistics collectors
#
# There currently isn't much to do, but always calling it allows us to add
# enhancements without having to update our callers.
# It must be run before calling `old-dejagnu'.

proc old-dejagnu-init { } {
}

# old-dejagnu-stat -- print the stats of this run
#
# ??? This is deprecated, and can be removed.

proc old-dejagnu-stat { } {
}

# old-dejagnu -- runs an old style DejaGnu test.
#
# Returns 0 if successful, 1 if their were any errors.
# PROG is the full path name of the file to compile.
#
# CFLAGS_VAR is the name of the global variable containing compiler flags.
# We ignore this now.
#
# CFLAGS is the options to always pass to the compiler.
# This is also ignored.
#
# DEFAULT_CFLAGS are additional options if the testcase has none.
#
# LIBS_VAR is the name of the global variable containing libraries (-lxxx's).
# This is also ignored.
#
# LIBS is any additional libraries to link with.  This *cannot* be specified
# with the compiler flags because otherwise gcc will issue, for example, a
# "-lg++ argument not used since linking not done" warning which will screw up
# the test for excess errors.  We could ignore such messages instead.
#
# Think of "cflags" here as "compiler flags", not "C compiler flags".

proc old-dejagnu { compiler prog cflagsx default_cflags libs } {
    global verbose
    global tool
    global subdir		;# eg: g++.old-dejagnu
    global host_triplet
    global tmpdir

    set runflag 1
    set execbug_flag 0
    set excessbug_flag 0
    set pattern ""
    set text "\[- A-Za-z0-9\.\;\"\_\:\'\`\(\)\!\#\=\+\?\&\*]*"

    if ![info exists tmpdir] then {
	set tmpdir "/tmp"
    }

# look for keywords that change the compiler options
#
# There are two types of test, negative and affirmative. Negative
# tests have the keyword of "ERROR - " or "WARNING - " on the line
# expected to produce an error. This is followed by the pattern. If
# the desired error or warning message appears, then the test passes.
# 
# Affirmative test can have the following keywords "gets bogus error",
# "causes invalid C code", "invalid assembly code", "causes abort",
# "causes segfault", "causes linker error", "execution test fails". If
# the pattern after the keyword matches, then the test is a failure.
#
# One can specify particular targets for expected failures of the above
# keywords by putting "XFAIL target-triplet" after the keyword.
#
# Example:
#
# void f ()
#{
#  int i[2], j;
#  A a (int (i[1]), j);		// gets bogus error - late parsing XFAIL *-*-*
#  A b (int (i[1]), int j);	// function
#  a.k = 0;			// gets bogus error - late parsing XFAIL *-*-*
#  b (i, j);
#}
#
# Note also, that one can add a comment with the keyword ("late parsing"
# in the above example).
#
# If any of the tests contain the special pattern "FIXME -" that test is
# not run because it will produce incorrect output.
#
# Testcases can supply special options to the compiler with a line containing
# "Special.*Options: ...", where ".*" can be anything (eg: g++) and "..." are
# the additional options to pass to the compiler.  Nothing else may appear
# after the options.  IE: for a C testcase
# /* Special Options: -fomit-frame-pointer */  /* Oops! */
# is wrong,
# /* Special Options: -fomit-frame-pointer */
# is right.  If no such Special Options are found, $default_cflags is used.
# FIXME: Can there be multiple lines of these?
#
# Other keywords: "Build don't link:", "Build don't run:".

    set name "[file tail [file dirname $prog]]/[file tail $prog]"

    set tmp [grep $prog "FIXME -.*"]
    if ![string match "" $tmp] then {
	foreach i $tmp {
	    warning "[file tail [file dirname $prog]]/[file tail $prog] [lrange $i 2 end]"
	}
	return 1
    }

    set tmp [lindex [grep $prog "Special.*Options:.*"] 0]
    set cflags ""

    regsub -all "\n\[^\n\]+(\n|$)" $tmp "\n" tmp
    set tmp [string trim $tmp]
    if ![string match "" $tmp] then {
	regsub "^.*Special.*Options:" $tmp "" tmp
	lappend cflags "additional_flags=$tmp"
	verbose "Adding special options $tmp" 2
    } else {
	lappend cflags "additional_flags=$default_cflags"
    }

    if { $cflagsx != "" } {
	lappend cflags "additional_flags=$cflagsx"
    }

    lappend cflags "compiler=$compiler"

    regsub -all "\[./\]" "$name" "-" output;
    set output "$tmpdir/$output";
    set compile_type "executable"

    set tmp [lindex [grep $prog "Build don.t link:"] 0]
    if ![string match "" $tmp] then {
	set compile_type "object"
	set runflag 0
	set output "$tmpdir/[file tail [file rootname $prog]].o"
	verbose "Will compile $prog to object" 3
    }

    set tmp [lindex [grep $prog "Build don.t run:"] 0]
    if ![string match "" $tmp] then {
	set runflag 0
	verbose "Will compile $prog to binary" 3
    }

    set tmp [grep $prog "Skip if (|not )feature:.*"];
    if { $tmp != "" } {
	foreach line $tmp {
	    if [regexp "Skip if not feature" $line] {
		set not 1;
	    } else {
		set not 0;
	    }
	    regsub "^.*Skip if (|not )feature:\[ 	\]*" "$line" "" i;
	    set is_set 0;
	    foreach j $i {
		if [target_info exists $j] {
		    set is_set 1;
		    break;
		}
	    }
	    if { $is_set != $not } {
		untested "$name: Test skipped: ${line}($j set)"
		return;
	    }
	}
    }

    set tmp [grep $prog "Skip if (|not )target:.*"];
    if { $tmp != "" } {
	foreach line $tmp {
	    if [regexp "Skip if not target:" $line] {
		set not 1;
	    } else {
		set not 0;
	    }
	    regsub "^.*Skip if (|not )target:\[ 	\]*" "$line" "" i;
	    set ist 0;
	    foreach j $i {
		if [istarget $j] {
		    set ist 1;
		    break;
		}
	    }
	    if { $ist != $not } {
		untested "$name: Test skipped: ${line}"
		return;
	    }
	}
    }

    if ![isnative] {
	set tmp [lindex [grep $prog "Skip if not native"] 0];
	if { $tmp != "" } {
	    untested "$name: Test skipped because not native";
	    return;
	}
    } else {
	set tmp [lindex [grep $prog "Skip if native"] 0];
	if { $tmp != "" } {
	    untested "$name: Test skipped because native";
	    return;
	}
    }

    lappend cflags "libs=$libs"

#
# Look for the other keywords and extract the error messages.
# `message' contains all the things we found.
# ??? We'd like to use lappend below instead of concat, but that doesn't
# work (adds an extra level of nesting to $tmp).
#

    set message ""

    set tmp [process-option $prog "ERROR - " "an error message" ERROR "$text error$text"]
    if ![string match "" $tmp] then {
	set runflag 0
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "WARNING - " "a warning message" WARNING "warning"]
    if ![string match "" $tmp] then {
	set runflag 0
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "gets bogus error" "a bogus error" BOGUS $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "causes invalid C code" "a bad C translation" BADC $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "invalid assembly code" "some invalid assembly code" BADASM $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "causes abort" "an abort cause" ABORT $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "causes segfault" "a segfault cause" SEGFAULT $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "causes linker error" "a linker error" LINKER $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "execution test fails" "an execution failure" EXECO $text]
    if ![string match "" $tmp] then {
	set execbug_flag 1
	set message [concat $message $tmp]
	warning "please use execution test - XFAIL *-*-* in $prog instead"
    }

    set tmp [process-option $prog "execution test - " "an excess error failure" EXEC $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set tmp [process-option $prog "excess errors test fails" "an excess error failure" EXCESSO $text]
    if ![string match "" $tmp] then {
	set excessbug_flag 1
	set message [concat $message $tmp]
	warning "please use excess errors test - XFAIL *-*-* in $prog instead"
    }

    set tmp [process-option $prog "excess errors test - " "an excess error failure" EXCESS $text]
    if ![string match "" $tmp] then {
	set message [concat $message $tmp]
    }

    set expect_crash \
      [process-option $prog "crash test - " "a crash" CRASH $text]
    if {$expect_crash != "" 
        && [lindex [lindex $expect_crash 0] 1] == "XCRASH"} then {
       set expect_crash 1
    } else {
       set expect_crash 0
    }

#
#  run the compiler and analyze the results
#

    # Since we don't check return status of the compiler, make sure
    # we can't run a.out when the compilation fails.
    remote_file build delete $output
    set comp_output [${tool}_target_compile $prog $output $compile_type $cflags]

    # Delete things like "ld.so: warning" messages.
    set comp_output [prune_warnings $comp_output]

    if [string match "*Internal compiler error*" $comp_output] then {
        if $expect_crash then {
	    setup_xfail "*-*-*"
	}
        fail "$name caused compiler crash"
        remote_file build delete $output
        return 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"

    set last_line 0
    foreach i $message {

	#send_user "\nold_dejagnu.exp: i = :$i:\n\n"

	# 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]

	# Multiple tests one one line don't work, because we remove all 
	# messages on the line for the first test.  So skip later ones.
	if { $line == $last_line } {
	    continue
	}
	set last_line $line

	if [regsub -all "(^|\n)\[^\n\]+:$line:\[^\n\]*" $comp_output "" comp_output] {
            set comp_output [string trimleft $comp_output]
	    set ok pass
	    set uhoh fail
	} else {
	    set ok fail
	    set uhoh pass
	}

	case [lindex $i 1] {
	    "ERROR" {
		$ok "$name $pattern (test for errors, line $line)"
	    }
	    "XERROR" {
		x$ok "$name $pattern (test for errors, line $line)"
	    }
	    "WARNING" {
		$ok "$name $pattern (test for warnings, line $line)"
	    }
	    "XWARNING" {
		x$ok "$name $pattern (test for warnings, line $line)"
	    }
	    "BOGUS" {
		$uhoh "$name $pattern (test for bogus messages, line $line)"
	    }
	    "XBOGUS" {
		x$uhoh "$name $pattern (test for bogus messages, line $line)"
	    }
	    "ABORT" {
		$uhoh "$name $pattern (test for compiler aborts, line $line)"
	    }
	    "XABORT" {
		x$uhoh "$name $pattern (test for compiler aborts, line $line)"
	    }
	    "SEGFAULT" {
		$uhoh "$name $pattern (test for compiler segfaults, line $line)"
	    }
	    "XSEGFAULT" {
		x$uhoh "$name $pattern (test for compiler segfaults, line $line)"
	    }
	    "LINKER" {
		$uhoh "$name $pattern (test for linker problems, line $line)"
	    }
	    "XLINKER" {
		x$uhoh "$name $pattern (test for linker problems, line $line)"
	    }
	    "BADC" {
		$uhoh "$name $pattern (test for Bad C code, line $line)"
	    }
	    "XBADC" {
		x$uhoh "$name $pattern (test for Bad C code, line $line)"
	    }
	    "BADASM" {
		$uhoh "$name $pattern (test for bad assembler, line $line)"
	    }
	    "XBADASM" {
		x$uhoh "$name $pattern (test for bad assembler, line $line)"
	    }
	    "XEXEC" {
		set execbug_flag 1
	    }
	    "XEXCESS" {
		set excessbug_flag 1
	    }
	}
	#send_user "\nold_dejagnu.exp: comp_output2= :$comp_output:\n\n"
    }
    #send_user "\nold_dejagnu.exp: comp_output3 = :$comp_output:\n\n"

    #look to see if this is all thats left, if so, all messages have been handled
    #send_user "comp_output: $comp_output\n"
    regsub -all "(^|\n)\[^\n\]*: In (function|method) \[^\n\]*" $comp_output "" comp_output
    regsub -all "(^|\n)\[^\n\]*: In instantiation of \[^\n\]*" $comp_output "" comp_output
    regsub -all "(^|\n)\[^\n\]*:   instantiated from \[^\n\]*" $comp_output "" comp_output
    regsub -all "(^|\n)\[^\n\]*: At top level:\[^\n\]*" $comp_output "" comp_output
    regsub -all "(^|\n)\[^\n\]*file path prefix \[^\n\]* never used" $comp_output "" comp_output
    regsub -all "(^|\n)\[^\n\]*linker input file unused since linking not done" $comp_output "" comp_output

    set unsupported_message [${tool}_check_unsupported_p $comp_output]
    if { $unsupported_message != "" } {
	unsupported "$name: $unsupported_message"
	return
    }

    # 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"
    
    # excess errors
    if $excessbug_flag then {
	setup_xfail "*-*-*"
    }
    if ![string match "" $comp_output] then {
	fail "$name (test for excess errors)"
	send_log "$comp_output\n"
    } else {
	pass "$name (test for excess errors)"
    }

    # run the executable image
    if $runflag then {
	set executable $output
	if ![file exists $executable] then {
	    # Since we couldn't run it, we consider it an expected failure,
	    # so that test cases don't appear to disappear, and reappear.
	    setup_xfail "*-*-*"
	    fail "$name $pattern Execution test"
	} else {
	    set status -1
	    set result [eval [format "%s_load %s" $tool $executable]]
	    set status [lindex $result 0];
	    set output [lindex $result 1];
	    if { $status == "pass" } {
		remote_file build delete $executable;
	    }
	    if { $execbug_flag || $excessbug_flag } then {
		setup_xfail "*-*-*"
	    }
	    $status "$name $pattern Execution test"
	}
    }

    verbose "deleting $output"
    remote_file build delete $output
    return 0
}
