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# Copyright (C) 2000, 2002, 2003, 2005, 2007, 2008
# 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 GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# Various utilities for scanning dump output, used by gcc-dg.exp and
# g++-dg.exp.
#
# This is largely borrowed from scanasm.exp.

# Extract the constant part of the dump file suffix from the regexp.
# Argument 0 is the regular expression.
proc dump-suffix { arg } {
    set idx [expr [string last "." $arg] + 1]
    return [string range $arg $idx end]
}

# Utility for scanning compiler result, invoked via dg-final.
# Call pass if pattern is present, otherwise fail.
#
# Argument 0 is the type of dump we are searching (rtl, tree, ipa)
# Argument 1 is the regexp to match.
# Argument 2 is the suffix for the dump file
# Argument 3 handles expected failures and the like
proc scan-dump { args } {

    if { [llength $args] >= 4 } {
        switch [dg-process-target [lindex $args 3]] {
            "S" { }
            "N" { return }
            "F" { setup_xfail "*-*-*" }
            "P" { }
        }
    }

    # This assumes that we are three frames down from dg-test, and that
    # it still stores the filename of the testcase in a local variable "name".
    # A cleaner solution would require a new DejaGnu release.
    upvar 3 name testcase

    set suf [dump-suffix [lindex $args 2]]
    set testname "$testcase scan-[lindex $args 0]-dump $suf \"[lindex $args 1]\""
    set src [file tail [lindex $testcase 0]]
    set output_file "[glob -nocomplain $src.[lindex $args 2]]"
    if { $output_file == "" } {
        fail "$testname: dump file does not exist"
        return
    }

    set fd [open $output_file r]
    set text [read $fd]
    close $fd

    if [regexp -- [lindex $args 1] $text] {
        pass "$testname"
    } else {
        fail "$testname"
    }
}

# Call pass if pattern is present given number of times, otherwise fail.
# Argument 0 is the type of dump we are searching (rtl, tree, ipa)
# Argument 1 is the regexp to match.
# Argument 2 is number of times the regexp must be found
# Argument 3 is the suffix for the dump file
# Argument 4 handles expected failures and the like
proc scan-dump-times { args } {

    if { [llength $args] >= 5 } {
        switch [dg-process-target [lindex $args 4]] {
            "S" { }
            "N" { return }
            "F" { setup_xfail "*-*-*" }
            "P" { }
        }
    }

    # This assumes that we are three frames down from dg-test, and that
    # it still stores the filename of the testcase in a local variable "name".
    # A cleaner solution would require a new DejaGnu release.
    upvar 3 name testcase

    set suf [dump-suffix [lindex $args 3]]
    set testname "$testcase scan-[lindex $args 0]-dump-times $suf \"[lindex $args 1]\" [lindex $args 2]"
    set src [file tail [lindex $testcase 0]]
    set output_file "[glob -nocomplain $src.[lindex $args 3]]"
    if { $output_file == "" } {
        fail "$testname: dump file does not exist"
        return
    }

    set fd [open $output_file r]
    set text [read $fd]
    close $fd

    if { [llength [regexp -inline -all -- [lindex $args 1] $text]] == [lindex $args 2]} {
        pass "$testname"
    } else {
        fail "$testname"
    }
}

# Call pass if pattern is not present, otherwise fail.
#
# Argument 0 is the type of dump we are searching (rtl, tree, ipa)
# Argument 1 is the regexp to match.
# Argument 2 is the suffix for the dump file
# Argument 3 handles expected failures and the like
proc scan-dump-not { args } {

    if { [llength $args] >= 4 } {
        switch [dg-process-target [lindex $args 3]] {
            "S" { }
            "N" { return }
            "F" { setup_xfail "*-*-*" }
            "P" { }
        }
    }

    # This assumes that we are three frames down from dg-test, and that
    # it still stores the filename of the testcase in a local variable "name".
    # A cleaner solution would require a new DejaGnu release.
    upvar 3 name testcase

    set suf [dump-suffix [lindex $args 2]]
    set testname "$testcase scan-[lindex $args 0]-dump-not $suf \"[lindex $args 1]\""
    set src [file tail [lindex $testcase 0]]
    set output_file "[glob -nocomplain $src.[lindex $args 2]]"
    if { $output_file == "" } {
        fail "$testname: dump file does not exist"
        return
    }

    set fd [open $output_file r]
    set text [read $fd]
    close $fd

    if ![regexp -- [lindex $args 1] $text] {
        pass "$testname"
    } else {
        fail "$testname"
    }
}

# Utility for scanning demangled compiler result, invoked via dg-final.
# Call pass if pattern is present, otherwise fail.
#
# Argument 0 is the type of dump we are searching (rtl, tree, ipa)
# Argument 1 is the regexp to match.
# Argument 2 is the suffix for the dump file
# Argument 3 handles expected failures and the like
proc scan-dump-dem { args } {
    global cxxfilt
    global base_dir

    if { [llength $args] >= 4 } {
        switch [dg-process-target [lindex $args 3]] {
            "S" { }
            "N" { return }
            "F" { setup_xfail "*-*-*" }
            "P" { }
        }
    }

    # Find c++filt like we find g++ in g++.exp.
    if ![info exists cxxfilt]  {
        set cxxfilt [findfile $base_dir/../../../binutils/cxxfilt \
                     $base_dir/../../../binutils/cxxfilt \
                     [findfile $base_dir/../../c++filt $base_dir/../../c++filt \
                      [findfile $base_dir/c++filt $base_dir/c++filt \
                       [transform c++filt]]]]
        verbose -log "c++filt is $cxxfilt"
    }

    upvar 3 name testcase
    set suf [dump-suffix [lindex $args 2]]
    set testname "$testcase scan-[lindex $args 0]-dump-dem $suf \"[lindex $args 1]\""
    set src [file tail [lindex $testcase 0]]
    set output_file "[glob -nocomplain $src.[lindex $args 2]]"
    if { $output_file == "" } {
        fail "$testname: dump file does not exist"
        return
    }

    set fd [open "| $cxxfilt < $output_file" r]
    set text [read $fd]
    close $fd

    if [regexp -- [lindex $args 1] $text] {
        pass "$testname"
    } else {
        fail "$testname"
    }
}

# Call pass if demangled pattern is not present, otherwise fail.
#
# Argument 0 is the type of dump we are searching (rtl, tree, ipa)
# Argument 1 is the regexp to match.
# Argument 2 is the suffix for the dump file
# Argument 3 handles expected failures and the like
proc scan-dump-dem-not { args } {
    global cxxfilt
    global base_dir

    if { [llength $args] >= 4 } {
        switch [dg-process-target [lindex $args 3]] {
            "S" { }
            "N" { return }
            "F" { setup_xfail "*-*-*" }
            "P" { }
        }
    }

    # Find c++filt like we find g++ in g++.exp.
    if ![info exists cxxfilt]  {
        set cxxfilt [findfile $base_dir/../../../binutils/cxxfilt \
                     $base_dir/../../../binutils/cxxfilt \
                     [findfile $base_dir/../../c++filt $base_dir/../../c++filt \
                      [findfile $base_dir/c++filt $base_dir/c++filt \
                       [transform c++filt]]]]
        verbose -log "c++filt is $cxxfilt"
    }

    upvar 3 name testcase

    set suf [dump-suffix [lindex $args 2]]
    set testname "$testcase scan-[lindex $args 0]-dump-dem-not $suf \"[lindex $args 1]\""
    set src [file tail [lindex $testcase 0]]
    set output_file "[glob -nocomplain $src.[lindex $args 2]]"
    if { $output_file == "" } {
        fail "$testname: dump file does not exist"
        return
    }

    set fd [open "| $cxxfilt < $output_file" r]
    set text [read $fd]
    close $fd

    if ![regexp -- [lindex $args 1] $text] {
        pass "$testname"
    } else {
        fail "$testname"
    }
}