#!/bin/sh
##############################################################################
#                      __                                                    #
#      ________ ___   / /  ___     Scala Tools Launch Script                 #
#     / __/ __// _ | / /  / _ |    (c) 2002-2005, LAMP/EPFL                  #
#   __\ \/ /__/ __ |/ /__/ __ |                                              #
#  /____/\___/_/ |_/____/_/ | |                                              #
#                           |/                                               #
##############################################################################

# $Id$

##############################################################################
# Configuration

# The configure function contains all the configurable variables of
# this script. Each of these variables may be overridden by defining
# an environment variable with the same but where the "default_" has
# been replaced by "SCALA_". For example, to start scalaint with a big
# initial heap size, one may run the following command:
#
#   env SCALA_SCALA_ARGS=-Xms1024m scalaint".
#
# These variables must use the Unix form for paths and path lists
# (i.e. use '/' as file separator and ':' as path separator). There
# are two exceptions: JAVA_ARGS and SCALA_ARGS which must use the
# paltform-specific form.
#
# The following environment variables are also read by this script:
#
# - SCALA_CLASSPATH: if defined, it is used as the default classpath
#   by all Scala tools.
#
# - CLASSPATH: if defined and SCALA_CLASSPATH is undefined, it is used
#   as the default classpath by all Scala tools.
#
# - SCALA_SOURCEPATH: if defined, it is used as the default sourcepath
#   by all Scala tools.
#
# - SCALA_BOOTCLASSPATH: if defined, it is used as the default
#   bootclasspath by all Scala tools.
#
# - SCALA_EXTDIRS: if defined, it is used as the default extdirs by
#   all Scala tools.
#
# These variables must use the platform-specific form for paths and
# path lists.

configure() {

    # Location of the Scala library sources.
    default_LIBRARY_SOURCES={#LIBRARY_SOURCES#};

    # Location of the Scala library.
    default_LIBRARY_CLASSES={#LIBRARY_CLASSES#};

    # Location of the Scala tools library.
    default_TOOLS_CLASSES={#TOOLS_CLASSES#};

    # Location of the FJBG library.
    default_FJBG_CLASSES={#FJBG_CLASSES#};

    # Location of the MSIL library.
    default_MSIL_CLASSES={#MSIL_CLASSES#};

    # Command to start the Java VM.
    default_JAVA_CMD={#JAVA_CMD#};

    # Additional arguments to pass to the Java VM.
    default_JAVA_ARGS={#JAVA_ARGS#};

    # Command to start the Scala VM.
    default_SCALA_CMD={#SCALA_CMD#};

    # Additional arguments to pass to the Scala VM.
    default_SCALA_ARGS={#SCALA_ARGS#};

    # Command to start subprocesses. This is mainly for debugging
    # purposes. For example, one may display the Java command that is
    # started by "scala", by running "env SCALA_EXEC=echo scala".
    default_EXEC="exec";

}

##############################################################################
# Error functions

# Prints a warning message on stderr.
warning() {
    echo "$0: warning:" "$@" 1>&2;
}

# Prints an error message on stderr.
error() {
    echo "$0:" "$@" 1>&2;
}

# Prints an error message on stderr and exits with a non-zero status.
abort() {
    error "$@";
    exit 1;
}

##############################################################################
# Printing functions

# Initializes the printf functions
printf_initialization() {
    case "$1" in
        many )
            printf_font_outline="printf \\033[1;39m";
            printf_font_success="printf \\033[1;32m";
            printf_font_failure="printf \\033[1;31m";
            printf_font_warning="printf \\033[1;33m";
            printf_font_default="printf \\033[0;39m";
            ;;
        some )
            printf_font_outline="printf \\033[1m";
            printf_font_success="printf \\033[0m";
            printf_font_failure="printf \\033[1m";
            printf_font_warning="printf \\033[1m";
            printf_font_default="printf \\033[0m";
            ;;
        none )
            printf_font_outline="";
            printf_font_success="";
            printf_font_failure="";
            printf_font_warning="";
            printf_font_default="";
            ;;
        * )
            abort "unknown color mode \`$1'";
            ;;
    esac;
}

# Prints formated text in outline font.
printf_outline() {
    $printf_font_outline;
    printf "$@";
    $printf_font_default;
}

# Prints formated text in success font.
printf_success() {
    $printf_font_success;
    printf "$@";
    $printf_font_default;
}

# Prints formated text in failure font.
printf_failure() {
    $printf_font_failure;
    printf "$@";
    $printf_font_default;
}

# Prints formated text in warning font.
printf_warning() {
    $printf_font_warning;
    printf "$@";
    $printf_font_default;
}

##############################################################################
# File name and path list conversion functions

# Prints the OS-specific form of the specified Unix form file name.
get_os_filename() {
    [ $# = 1 ] || abort "internal error";
    case "$UNAME" in
        CYGWIN* ) cygpath --windows "$1";;
        *       ) echo "$@";;
    esac;
}

# Prints the Unix form of the specified OS-specific form file name.
get_unix_filename() {
    [ $# = 1 ] || abort "internal error";
    case "$UNAME" in
        CYGWIN* ) cygpath --unix "$1";;
        *       ) echo "$@";;
    esac;
}

# Prints the OS-specific form of the specified Unix form path list.
get_os_pathlist() {
    [ $# = 1 ] || abort "internal error";
    case "$UNAME" in
        CYGWIN* ) cygpath --window --path "$1";;
        *       ) echo "$@";;
    esac;
}

# Prints the Unix form of the specified OS-specific form path list.
get_unix_pathlist() {
    [ $# = 1 ] || abort "internal error";
    case "$UNAME" in
        CYGWIN* ) cygpath --unix --path "$1";;
        *       ) echo "$@";;
    esac;
}

##############################################################################
# Path list construction functions

# Prints the concatenation of two path lists.
append_pathlists() {
    [ $# = 2 ] || abort "internal error";

    if [ -z "$1" ]; then
        echo "$2";
    elif [ -z "$2" ]; then
        echo "$1";
    else
        echo "$1:$2";
    fi;
}

##############################################################################
# Value computation functions

# Computes and stores the value "$1" in the variable "current_$1". If
# the variable "SCALA_$1" is defined, its content is used. Otherwise,
# the content of the variable "default_$1" is used.
compute_value() {
    [ $# = 1 ] || abort "internal error";

    eval current_$1=\"\$default_$1\";
    case "$1" in

        LIBRARY_SOURCES  | \
        LIBRARY_CLASSES  | \
        TOOLS_CLASSES    | \
        NLIBRARY_CLASSES | \
        NTOOLS_CLASSES   | \
        FJBG_CLASSES     | \
        MSIL_CLASSES     )
            if eval [ -n \"\$SCALA_$1\" ]; then
                if eval [ -f \"\$SCALA_$1\" -o -d \"\$SCALA_$1\" ]; then
                    eval current_$1=\"\$SCALA_$1\";
                else
                    eval warning \""File referred by SCALA_$1 (\$SCALA_$1)" \
                        "does not exist, using default value instead."\";
                    unset SCALA_$1;
                fi;
            fi;
            if eval [ -f \"\$current_$1\" -o -d \"\$current_$1\" ]; then
                :;
            else
                eval abort \""File referred by default_$1 (\$default_$1)" \
                    "does not exist. Please, fix definition of default_$1 in" \
                    "file $SOURCE or define environment variable SCALA_$1."\";
            fi;
            ;;

        JAVA_CMD   | \
        JAVA_ARGS  | \
        SCALA_CMD  | \
        SCALA_ARGS | \
        EXEC       )
            if eval [ -n \"\$SCALA_$1\" ]; then
                eval current_$1=\"\$SCALA_$1\";
            fi;
            ;;

        * )
            abort "internal error: $1";
            ;;

    esac;
}

##############################################################################
# Default paths

# Prints the default scala classpath or nothing if it's unspecified.
get_scala_classpath() {
    if [ -n "$SCALA_CLASSPATH" ]; then
        get_unix_pathlist "$SCALA_CLASSPATH";
    elif [ -n "$CLASSPATH" ]; then
        get_unix_pathlist "$CLASSPATH";
    fi;
}

# Prints the default scala sourcepath or nothing if it's unspecified.
get_scala_sourcepath() {
    if [ -n "$SCALA_SOURCEPATH" ]; then
        get_unix_pathlist "$SCALA_SOURCEPATH";
    fi;
}

# Prints the default scala bootclasspath or nothing if it's unspecified.
get_scala_bootclasspath() {
    if [ -n "$SCALA_BOOTCLASSPATH" ]; then
        get_unix_pathlist "$SCALA_BOOTCLASSPATH";
    fi;
}

# Prints the default scala extdirs or nothing if it's unspecified.
get_scala_extdirs() {
    if [ -n "$SCALA_EXTDIRS" ]; then
        get_unix_pathlist "$SCALA_EXTDIRS";
    fi;
}

##############################################################################
# VM invocation functions

# Prints the VM script-suffix-specific arguments.
vm_get_script_suffix_args() {
    case "$SCRIPT" in
        *-debug* ) echo "-Djava.compiler=NONE -ea";;
    esac;
}

# Starts a Java VM with the specified arguments.
vm_start_java() {
    # compute values
    compute_value EXEC;
    compute_value JAVA_CMD;
    compute_value JAVA_ARGS;

    # start Java VM
    $current_EXEC $current_JAVA_CMD $current_JAVA_ARGS \
        `vm_get_script_suffix_args` "$@";
}

# Starts a Scala VM with the specified arguments.
vm_start_scala() {
    # compute values
    compute_value EXEC;
    compute_value SCALA_CMD;
    compute_value SCALA_ARGS;

    # start Java VM
    $current_EXEC $current_SCALA_CMD $current_SCALA_ARGS \
        `vm_get_script_suffix_args` "$@";
}

##############################################################################
# Scala invocation functions

# Returns true if the given arguments contain a flag -Xbootclasspath.
scala_has_bootclasspath() {
    while [ $# != 0 ]; do
        case "$1" in
            -Xbootclasspath:* ) return 0;;
            -cp | -classpath  ) shift 1; [ $# != 0 ] && shift 1;;
            -jar              ) return 1;;
            -*                ) shift 1;;
            *                 ) return 1;;
        esac;
    done;
    return 1;
}

# Implements "scala [<option>...] <class> [<args>...]".
scala_main() {
    if scala_has_bootclasspath "$@"; then
        vm_start_java "$@";
    else
        compute_value LIBRARY_CLASSES;
        classes="$current_LIBRARY_CLASSES";
        vm_start_java "-Xbootclasspath/a:`get_os_filename "$classes"`" "$@";
    fi;
}

##############################################################################
# Tool invocation functions

# Starts a Scala tool. The first argument is added to the runtime
# classpath. The following ones are passed to vm_start_scala. They
# must, at least, contain the name of the main class.
tool_start() {
    [ $# -gt 1 ] || abort "internal error";
    classpath="$1"; shift 1;

    # compute value
    compute_value LIBRARY_SOURCES;
    compute_value LIBRARY_CLASSES;
    compute_value TOOLS_CLASSES;

    # append tools library to classpath
    classpath=`append_pathlists "$classpath" "$current_TOOLS_CLASSES"`;

    # start Scala VM
    tool_start0 -classpath "`get_os_pathlist "$classpath"`" "$@";
}

tool_start0() {
    if [ -n "`get_scala_extdirs`" ]; then
        tool_start1 -Dscala.ext.dirs="`get_scala_extdirs`" "$@";
    else
        tool_start1 "$@";
    fi;
}

tool_start1() {
    if [ -n "`get_scala_bootclasspath`" ]; then
        tool_start2 -Dscala.boot.class.path="`get_scala_bootclasspath`" "$@";
    else
        tool_start2 "$@";
    fi;
}

tool_start2() {
    if [ -n "`get_scala_sourcepath`" ]; then
        tool_start3 -Dscala.source.path="`get_scala_sourcepath`" "$@";
    else
        tool_start3 "$@";
    fi;
}

tool_start3() {
    if [ -n "`get_scala_classpath`" ]; then
        tool_start4 -Dscala.class.path="`get_scala_classpath`" "$@";
    else
        tool_start4 "$@";
    fi;
}

tool_start4() {
    sources="$current_LIBRARY_SOURCES";
    classes="$current_LIBRARY_CLASSES";
    vm_start_scala \
        -Dscala.product="$SCRIPT" \
        -Dscala.version="$VERSION" \
        -Dscala.home="$PREFIX" \
        -Dscala.library.source.path="`get_os_filename "$sources"`" \
        -Dscala.library.class.path="`get_os_filename "$classes"`" \
        "$@";
}

##############################################################################
# Compiler invocation functions

# Starts a Scala compiler. The first argument is added to the runtime
# classpath. The following ones are passed to vm_start_scala. They
# must, at least, contain the name of the main class.
compiler_start() {
    [ $# -gt 1 ] || abort "internal error";
    classpath="$1"; shift 1;

    # compute values
    compute_value FJBG_CLASSES;
    compute_value MSIL_CLASSES;

    # append FJBG and MSIL libraries to classpath
    classpath=`append_pathlists "$classpath" "$current_FJBG_CLASSES"`;
    classpath=`append_pathlists "$classpath" "$current_MSIL_CLASSES"`;

    # start tool
    tool_start "$classpath" "$@";
}

##############################################################################
# Implementation of scala-info

# Prints given error message, prints usage and exits with error code 1.
info_abort() {
    error "$@";
    info_print_usage 1>&2;
    exit 1;
}

# Prints value of variable $1.
info_print_variable() {
    [ $# = 1 ] || abort "internal error";
    eval echo \"\$$1\";
}

# Prints default value of value $1.
info_print_default_value() {
    [ $# = 1 ] || abort "internal error";
    info_print_variable "default_$1";
}

# Prints current value of value $1.
info_print_current_value() {
    [ $# = 1 ] || abort "internal error";
    compute_value "$1";
    info_print_variable "current_$1";
}

# Implements "scala-info --home".
info_option_home() {
    [ $# -gt 0 ] && abort "too many arguments";
    echo "$PREFIX";
}

# Implements "scala-info --version".
info_option_version() {
    [ $# -gt 0 ] && abort "too many arguments";
    echo "$VERSION";
}

# Implements "scala-info --$1 <value>"
info_option_x_value() {
    [ $# -lt 2 ] && abort "missing value name";
    [ $# -gt 2 ] && abort "too many arguments";
    case "$2" in
        LIBRARY_SOURCES     ) value=$2;;
        LIBRARY_CLASSES     ) value=$2;;
        TOOLS_CLASSES       ) value=$2;;
        NLIBRARY_CLASSES    ) value=$2;;
        NTOOLS_CLASSES      ) value=$2;;
        FJBG_CLASSES        ) value=$2;;
        MSIL_CLASSES        ) value=$2;;
        JAVA_CMD            ) value=$2;;
        JAVA_ARGS           ) value=$2;;
        SCALA_CMD           ) value=$2;;
        SCALA_ARGS          ) value=$2;;
        EXEC                ) value=$2;;
        *                   ) abort "Unknown value \`$2'";;
    esac;
    info_print_$1_value $value;
}

# Implements "scala-info --help".
info_option_help() {
    echo "usage: $0 <option>";
    echo "where possible options include:";
    echo "  --home            Print Scala home directory";
    echo "  --version         Print Scala version";
    echo "  --default <name>  Print default value of value <name>";
    echo "  --current <name>  Print current value of value <name>";
    echo "  -? --help         Print this help message";
    echo "";
    echo "valid value names include:";
    echo "  LIBRARY_SOURCES   Location of the Scala library sources";
    echo "  LIBRARY_CLASSES   Location of the Scala library";
    echo "  TOOLS_CLASSES     Location of the Scala tools";
    echo "  NLIBRARY_CLASSES  Location of the new Scala library";
    echo "  NTOOLS_CLASSES    Location of the new Scala tools";
    echo "  FJBG_CLASSES      Location of the fjbg library";
    echo "  MSIL_CLASSES      Location of the msil library";
    echo "  JAVA_CMD          Command to start the Java VM";
    echo "  JAVA_ARGS         Additional arguments to pass to the Java VM";
    echo "  SCALA_CMD         Command to start the Scala VM";
    echo "  SCALA_ARGS        Additional arguments to pass to the Scala VM";
    echo "  EXEC              Command to start subprocesses";
}

# Implements "scala-info <option>".
info_main() {
    [ $# = 0 ] && abort "missing option";

    case "$1" in
        --home      ) shift 1; info_option_home "$@";;
        --version   ) shift 1; info_option_version "$@";;
        --default   ) shift 1; info_option_x_value default "$@";;
        --current   ) shift 1; info_option_x_value current "$@";;
        -? | --help ) shift 1; info_option_help "$@";;
        -*          ) abort "unrecognised option \`$1'";;
        *           ) abort "illegal argument \`$1'";;
    esac;
}

##############################################################################
# Implementation of scalatest

# Prints the scalatest usage.
test_print_usage() {
    [ $# = 0 ] || abort "internal error";
    echo "Usage: $0 [OPTION]..."
}

# Prints the scalatest help.
test_print_help() {
    [ $# = 0 ] || abort "internal error";
    test_print_usage;
    echo "";
    echo "--auto          use filenames to select the test to run";
    echo "--run           next files test the interpreter and all backends";
    echo "--jvm           next files test the JVM backend";
    echo "--int           next files test the interpreter";
    echo "--shl           next files test the interpreter shell";
    echo "--dis           next files test the disassembler";
    echo "--pos           next files test a compilation success";
    echo "--neg           next files test a compilation failure";
    echo "--msil          next files test the .NET backend";
    echo "--no-run        run no test, use results of last run";
    echo "--show-log      show output of failed tests";
    echo "--show-diff     show differences between actual and expected output";
    echo "--failed        test only files that failed last time";
    echo "--errors=<int>  specify the number of expected errors";
    echo "--flags=<flags> specify flags to pass on to the executable";
    echo "--color=USAGE   control the color usage (USAGE=none|some|many)";
    echo "--objdir=<dir>  specify where to place generated files";
    echo "--help, -?      display this help and exit";
    echo "--version       output version information and exit";
}

# Prints the scalatest version.
test_print_version() {
    [ $# = 0 ] || abort "internal error";
    echo "$SCRIPT "'$Revision$';
}

# Prints the name of the specified test file.
test_print_testing() {
    [ $# = 1 ] || abort "internal error";
    printf_outline "testing: ";
    case "$1" in
        "$TESTROOT"* )
            printf "%-60s " "[...]`expr "$1" : "$TESTROOT\(.*\)"`";
            return 0;
            ;;
    esac;
    printf "%-60s " "$1";
}

# Prints a test success notification.
test_print_success() {
    [ $# = 0 ] || abort "internal error";
    printf "[";
    printf_success "  OK  ";
    printf "]\\n";
}

# Prints a test failure notification.
test_print_failure() {
    [ $# = 0 ] || abort "internal error";
    printf "[";
    printf_failure "FAILED";
    printf "]\\n";
}


# Tests a compilation success.
test_run_pos() {
    rm -rf "$dstbase".obj &&
    mkdir -p "$dstbase".obj &&
    $SOCOS -d "$os_dstbase".obj "$@" "$os_srcbase".scala &&
    rm -rf "$dstbase".obj;
}

# Tests a compilation failure.
test_run_neg() {
    rm -rf "$dstbase".obj &&
    mkdir -p "$dstbase".obj &&
    ( cd "$srcdir" && $SOCOS -d "$os_dstbase".obj "$@" "$testname".scala; );
    status=$?;
    rm -rf "$dstbase".obj;
    if [ "$status" = 0 ]; then return 1; else return 0; fi;
}

# Tests the JVM backend.
test_run_jvm() {
    rm -rf "$dstbase".obj &&
    mkdir -p "$dstbase".obj &&
    $SOCOS -d "$os_dstbase".obj "$@" "$os_srcbase".scala &&
    $SCALA -classpath "$os_dstbase".obj Test "jvm" &&
    rm -rf "$dstbase".obj;
}

# Tests the interpreter.
test_run_int() {
    $SURUS "$@" "$os_srcbase".scala -- Test "int";
}

# Tests the interpreter shell.
test_run_shl() {
    cat "$os_srcbase".scala | $SURUS -interactive -nologo "$@";
}

# Test the disassemblers.
test_run_dis() {
    argsfile="$srcbase".args;
    if [ ! -f "$argsfile" ]; then
        argsfile=/dev/null;
    fi;
    rm -rf "$dstbase".obj &&
    mkdir -p "$dstbase".obj &&
    $SOCOS -d "$os_dstbase".obj "$@" "$os_srcbase".scala &&
    $SCALAP -classpath "$os_dstbase".obj `cat "$argsfile"` &&
    rm -rf "$dstbase".obj;
}

# Tests the .NET backend.
test_run_msil() {
    assemblies=`get_os_pathlist {#TEST_ASSEMBLIES#}`;
    rm -f "$dstbase".il &&
    rm -f "$dstbase".EXE &&
    $SOCOS -nowarn -target:msil -o "$os_dstbase" -r $assemblies "$@" \
        "$os_srcbase".scala &&
    case "$UNAME" in
        CYGWIN* )
            ilasm /qui /nol /out="$os_dstbase".EXE "$os_dstbase".il \
                > /dev/null &&
#             peverify /il "$os_dstbase".EXE > /dev/null &&
            "$dstbase".EXE "msil";;
        * )
            ilasm /output:"$os_dstbase".EXE "$os_dstbase".il \
                > /dev/null &&
            mono "$dstbase".EXE "msil";;
    esac &&
    rm -f "$dstbase".EXE &&
    rm -f "$dstbase".il;
}

# Checks the specified test.
test_check_test() {
    [ $# = 1 ] || abort "internal error";
    testfile="$1"; shift 1;
    # compute test name
    testname=`basename "$testfile" .scala`;

    # compute source and destination directories (absolute paths)
    srcdir=`dirname "$testfile"`;
    srcdir=`cd "$srcdir"; pwd`;
    dstdir="$OBJDIR""$srcdir";

    # compute source and destination base names
    srcbase="$srcdir"/"$testname";
    dstbase="$dstdir"/"$testname"-$kind;
    os_srcbase=`get_os_filename "$srcbase"`;
    os_dstbase=`get_os_filename "$dstbase"`;

    # compute flags file
    flagsfile="$srcbase".flags;
    if [ ! -f "$flagsfile" ]; then
        flagsfile=/dev/null;
    fi;

    # compute check file
    checkfile="$srcbase"-$kind.check;
    if [ ! -f "$checkfile" ]; then
        checkfile="$srcbase".check;
    fi;
    if [ ! -f "$checkfile" ]; then
        checkfile=/dev/null;
    fi;

    # compute log file
    logfile="$dstbase".log;

    # if we are testing only failed tests, skip successful tests
    if [ "$FAILED" = "true" -a ! -f "$logfile" ]; then
        return 0;
    fi;

    # if that's the first file of the section print section header
    if [ -n "$header" ]; then
        printf_outline "$header\\n";
        unset header;
    fi;

    # print tested file
    test_print_testing "$testfile";

    # run test
    if [ "$NORUN" = "true" ]; then
        [ ! -f "$logfile" ];
    else
        rm -f "$logfile";
        { [ -d "$dstdir" ] || mkdir -p "$dstdir"; } &&
        ( test_run_$kind `cat "$flagsfile"` $FLAGS 1> "$logfile" 2>&1; ) &&
        $DIFF "$logfile" "$checkfile" 1> /dev/null 2>&1 &&
        rm -f "$logfile";
    fi;

    # print result
    if [ "$?" = 0 ]; then
        SUCCESS_COUNT=`echo "$SUCCESS_COUNT+1" | bc`;
        test_print_success;
    else
        FAILURE_COUNT=`echo "$FAILURE_COUNT+1" | bc`;
        test_print_failure;
        if [ ! -f "$logfile" ]; then
            logfile=/dev/null;
        fi;
        if [ "$SHOWLOG" = "true" ]; then
            cat "$logfile";
        fi;
        if [ "$SHOWDIFF" = "true" ]; then
            $DIFF "$logfile" "$checkfile";
        fi;
    fi;
}

# Checks the specified file
test_check_file() {
    [ $# = 1 ] || abort "internal error";
    file="$1"; shift 1;
    for testfile in "" `find "$file" -name "*.obj" -prune -o -name "*.scala" -a -type f -print`; do
        [ -z "$testfile" ] && continue;
        test_check_test "$testfile";
    done;
}

# Checks all files of the specified kind.
test_check_kind() {
    [ $# -ge 2 ] || abort "internal error";
    header="$1"; shift 1;
    kind="$1"; shift 1;
    for file in "" "$@"; do
        [ -z "$file" ] && continue;
        test_check_file "$file";
    done
    if [ -z "$header" ]; then
        echo "";
    fi;
}

# Checks everything.
test_check_all() {
    [ $# = 0 ] || abort "internal error";
    test_check_kind "Testing JVM backend" \
        "jvm" $FILES_RUN $FILES_JVM;
    test_check_kind "Testing interpreter shell" \
        "shl" $FILES_SHL;
    test_check_kind "Testing disassembler" \
        "dis" $FILES_DIS;
    test_check_kind "Testing compiler (on files whose compilation should succeed)" \
        "pos" $FILES_POS;
    test_check_kind "Testing compiler (on files whose compilation should fail)" \
        "neg" $FILES_NEG;
    test_check_kind "Testing .NET backend" \
	"msil" $FILES_MSIL;
    test_check_kind "Testing interpreter" \
        "int" $FILES_RUN $FILES_INT;
}


# Adds a new file to the appropriate file list(s).
test_add_file() {
    [ $# = 1 ] || abort "internal error";
    case "$1" in
        *.scala )
            if [ ! \( -d "$1" -o -f "$1" \) ]; then
                abort "don't know what to do with '$1'";
            fi;;
        * )
            if [ ! -d "$1" ]; then
                abort "don't know what to do with '$1'";
            fi;;
    esac;
    TEST_ALL="false";
    case "$TEST_TYPE" in
        auto ) ;;
        run  ) FILES_RUN="$FILES_RUN $1"; return;;
        jvm  ) FILES_JVM="$FILES_JVM $1"; return;;
        int  ) FILES_INT="$FILES_INT $1"; return;;
        shl  ) FILES_SHL="$FILES_SHL $1"; return;;
        dis  ) FILES_DIS="$FILES_DIS $1"; return;;
        pos  ) FILES_POS="$FILES_POS $1"; return;;
        neg  ) FILES_NEG="$FILES_NEG $1"; return;;
	msil ) FILES_MSIL="$FILES_MSIL $1"; return;;
        *    ) abort "unknown test type \`$TEST_TYPE'";;
    esac;
    case "$1" in
        run  | */run  | */run/*  | run/*  ) FILES_RUN="$FILES_RUN $1";;
        jvm  | */jvm  | */jvm/*  | jvm/*  ) FILES_JVM="$FILES_JVM $1";;
        int  | */int  | */int/*  | int/*  ) FILES_INT="$FILES_INT $1";;
        shl  | */shl  | */shl/*  | shl/*  ) FILES_SHL="$FILES_SHL $1";;
        dis  | */dis  | */dis/*  | dis/*  ) FILES_DIS="$FILES_DIS $1";;
        pos  | */pos  | */pos/*  | pos/*  ) FILES_POS="$FILES_POS $1";;
        neg  | */neg  | */neg/*  | neg/*  ) FILES_NEG="$FILES_NEG $1";;
        msil | */msil | */msil/* | msil/* ) FILES_MSIL="$FILES_MSIL $1";;
        * ) abort "don't known what to do with \`$1'";;
    esac;
}

# Implements "scalatest ...".
test_main() {
    if [ "$SCALATEST" = "java" ]; then
        tool_start "" scala.tools.scalatest.Main "$@";
    fi;

    NORUN="false";
    SHOWLOG="false";
    SHOWDIFF="false";
    FAILED="false";
    ERRORS=0;
    SUCCESS_COUNT=0;
    FAILURE_COUNT=0;
    TESTROOT={#TEST_SRCDIR#};
    SRCDIR={#TEST_SRCDIR#};
    OBJDIR={#TEST_OBJDIR#};

    TEST_ALL="true";
    TEST_TYPE="auto";
    FILES_RUN="";
    FILES_JVM="";
    FILES_INT="";
    FILES_SHL="";
    FILES_DIS="";
    FILES_POS="";
    FILES_NEG="";
    FILES_MSIL="";

    SCALA="$PREFIX/bin/scala";
    SOCOS="$PREFIX/bin/scalac";
    SURUS="$PREFIX/bin/scalarun";
    SCALAP="$PREFIX/bin/scalap";
    DIFF="diff";

#   case "$SCRIPT" in
#       scalanstest* )
#           SOCOS="$PREFIX/bin/scalansc";
#       ;;
#   esac;

    case `uname` in
        CYGWIN* )
            DIFF="diff --text --strip-trailing-cr";
            ;;
    esac;

    while [ $# -gt 0 ]; do
        case "$1" in
            --auto       ) TEST_TYPE="auto"; shift 1;;
            --run        ) TEST_TYPE="run"; shift 1;;
            --jvm        ) TEST_TYPE="jvm"; shift 1;;
            --int        ) TEST_TYPE="int"; shift 1;;
            --shl        ) TEST_TYPE="shl"; shift 1;;
            --dis        ) TEST_TYPE="dis"; shift 1;;
            --pos        ) TEST_TYPE="pos"; shift 1;;
            --neg        ) TEST_TYPE="neg"; shift 1;;
            --msil       ) TEST_TYPE="msil"; shift 1;;
            --no-run     ) NORUN="true"; shift 1;;
            --show-log   ) SHOWLOG="true"; shift 1;;
            --show-diff  ) SHOWDIFF="true"; shift 1;;
            --failed     ) FAILED="true"; shift 1;;
            --errors=    ) abort "illegal empty argument for option --errors";;
            --errors=*   ) ERRORS=`expr "$1" : "--errors=\([0-9]*\)$"`;shift 1;;
            --flags=     ) abort "illegal empty argument for option --flags";;
            --flags=*    ) FLAGS=`expr "$1" : "--flags=\(.*\)"`; shift 1;;
            --color=     ) abort "illegal empty argument for option --color";;
            --color=*    ) COLOR=`expr "$1" : "--color=\(.*\)"`; shift 1;;
            --objdir=*   ) OBJDIR=`expr "$1" : "--objdir=\(.*\)"`; shift 1;;
            --help| -?   ) test_print_help; exit 0;;
            --version    ) test_print_version; exit 0;;
            -*           ) abort "unknown option $1";;
            *            ) test_add_file "$1"; shift 1;;
        esac;
    done;

    if [ -z "$ERRORS" ]; then
        abort "illegal non-numerical argument for option --errors";
    fi;

    if [ -z "$COLOR" -a -n "$EMACS" ]; then
        COLOR="none";
    fi;
    printf_initialization "${COLOR:-many}";

    if [ "$TEST_ALL" = "true" ]; then
        case "$TEST_TYPE" in
                   run ) FILES_RUN="$FILES_RUN $SRCDIR/run";;
        esac;
        case "$TEST_TYPE" in
            auto | jvm ) FILES_JVM="$FILES_JVM $SRCDIR/run $SRCDIR/jvm";;
        esac;
        case "$TEST_TYPE" in
            auto | int ) FILES_INT="$FILES_INT $SRCDIR/run";;
        esac;
        case "$TEST_TYPE" in
            auto | shl ) FILES_SHL="$FILES_SHL $SRCDIR/shl";;
        esac;
        case "$TEST_TYPE" in
            auto | dis ) FILES_DIS="$FILES_DIS $SRCDIR/dis";;
        esac;
        case "$TEST_TYPE" in
            auto | pos ) FILES_POS="$FILES_POS $SRCDIR/pos";;
        esac;
        case "$TEST_TYPE" in
            auto | neg ) FILES_NEG="$FILES_NEG $SRCDIR/neg";;
        esac;
        case "$TEST_TYPE" in
                   msil ) FILES_MSIL="$FILES_MSIL $SRCDIR/run";;
        esac;
    fi;

    SCALA_SCALA_ARGS="-Xmx512M $SCALA_SCALA_ARGS";
    export SCALA_SCALA_ARGS;

    if [ -n "$OBJDIR" ]; then
        if [ -d "$OBJDIR" ] || mkdir -p "$OBJDIR"; then
            OBJDIR=`cd "$OBJDIR"; pwd`;
        else
            abort "could not create directory '$OBJDIR'";
        fi
    fi

    printf_outline "Source directory is: $SRCDIR\\n\\n";

    test_check_all;

    if [ $FAILURE_COUNT -eq 0 ]; then
        printf_success "All tests were successful\\n";
    elif [ $FAILURE_COUNT -eq 1 ]; then
        printf_failure "There was 1 test that failed\\n";
    else
        printf_failure "There were $FAILURE_COUNT tests that failed\\n";
    fi;

    if [ $FAILURE_COUNT -eq "$ERRORS" ]; then
        exit 0;
    else
        exit 1;
    fi;
}

##############################################################################
# Definition of UNAME, SOURCE, SCRIPT, PREFIX and VERSION

unset SCRIPT;
UNAME=`uname`;
SOURCE=$0;
SCRIPT=`basename "$SOURCE"`;
while [ -h "$SOURCE" ]; do
    SCRIPT=`basename "$SOURCE"`;
    LOOKUP=`ls -ld "$SOURCE"`;
    TARGET=`expr "$LOOKUP" : '.*-> \(.*\)$'`;
    if expr "${TARGET:-.}/" : '/.*/$' > /dev/null; then
        SOURCE=${TARGET:-.};
    else
        SOURCE=`dirname "$SOURCE"`/${TARGET:-.};
    fi;
done;
PREFIX=`dirname "$SOURCE"`/..;
prefix=$PREFIX;
PREFIX=`cd "$PREFIX"; pwd`;

VERSION={#VERSION#};
VERSION=${VERSION:-"unknown version"};

##############################################################################
# Test of invocation method

if [ -z "$SCRIPT" ]; then
    abort "Illegal direct invocation; invoke me through a symbolic link.";
fi;

##############################################################################
# Configuration and invocation of $SCRIPT

configure;

case "$SCRIPT" in
    scala-info ) info_main "$@";;
    scala      ) scala_main "$@";;
    scala-*    ) scala_main "$@";;
    scalac*    ) compiler_start "" scala.tools.scalac.Main "$@";;
#   scalansc*  ) ncompiler_start "" scala.tools.nsc.Main "$@";;
    scalarun*  ) compiler_start "" scala.tools.scalai.Main "$@";;
    scalaint*  ) compiler_start "" scala.tools.scalai.Main -interactive "$@";;
    scaladoc*  ) tool_start "" scala.tools.scaladoc.Main "$@";;
    scalap*    ) tool_start "" scala.tools.scalap.Main "$@";;
    scalatest* ) test_main "$@";;
    scalanstest* ) test_main "$@";;
    *          ) abort "Don't know what to do for $SCRIPT.";;
esac;

##############################################################################