--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/src/java/lang/util.d	Mon Mar 02 14:44:16 2009 +0100
@@ -0,0 +1,1076 @@
+module java.lang.util;
+
+void implMissing( String file, uint line ){
+    Stderr.formatln( "implementation missing in file {} line {}", file, line );
+    Stderr.formatln( "exiting ..." );
+    exit(1);
+}
+
+alias char[] String;
+public import Math = tango.math.Math;
+
+public import tango.core.Exception : IllegalArgumentException, IOException;
+
+import tango.io.Stdout;
+import tango.io.stream.Format;
+static import tango.stdc.stringz;
+static import tango.text.Util;
+static import tango.text.Text;
+static import tango.text.Ascii;
+import tango.text.Unicode;
+import tango.text.convert.Utf;
+import tango.core.Exception;
+import tango.stdc.stdlib : exit;
+
+import tango.util.log.Trace;
+import tango.util.log.Log;
+import tango.text.UnicodeData;
+Logger getDwtLogger(){
+    return Log.lookup( "org.eclipse.swt" );
+}
+
+alias tango.text.Text.Text!(char) StringBuffer;
+
+alias ArrayBoundsException ArrayIndexOutOfBoundsException;
+
+abstract class ArrayWrapper{
+}
+abstract class ValueWrapper{
+}
+
+class ArrayWrapperT(T) : ArrayWrapper {
+    public T[] array;
+    public this( T[] data ){
+        array = data;
+    }
+    public override int opEquals( Object o ){
+        if( auto other = cast(ArrayWrapperT!(T))o){
+            return array == other.array;
+        }
+        return false;
+    }
+    public override hash_t toHash(){
+        return (typeid(T[])).getHash(&array);
+    }
+    static if( is( T == char )){
+        public override char[] toString(){
+            return array;
+        }
+    }
+}
+
+class ValueWrapperT(T) : ValueWrapper {
+    public T value;
+    public this( T data ){
+        value = data;
+    }
+    static if( is(T==class) || is(T==interface)){
+        public int opEquals( Object other ){
+            if( auto o = cast(ValueWrapperT!(T))other ){
+                return value == o.value;
+            }
+            if( auto o = cast(T)other ){
+                if( value is o ){
+                    return true;
+                }
+                if( value is null || o is null ){
+                    return false;
+                }
+                return value == o;
+            }
+            return false;
+        }
+    }
+    else{
+        public int opEquals( Object other ){
+            if( auto o = cast(ValueWrapperT!(T))other ){
+                return value == o.value;
+            }
+            return false;
+        }
+        public int opEquals( T other ){
+            return value == other;
+        }
+    }
+    public override hash_t toHash(){
+        return (typeid(T)).getHash(&value);
+    }
+}
+
+alias ArrayWrapperT!(byte)    ArrayWrapperByte;
+alias ArrayWrapperT!(int)     ArrayWrapperInt;
+alias ArrayWrapperT!(Object)  ArrayWrapperObject;
+alias ArrayWrapperT!(char)    ArrayWrapperString;
+alias ArrayWrapperT!(String)  ArrayWrapperString2;
+
+Object[] StringArrayToObjectArray( String[] strs ){
+    Object[] res = new Object[strs.length];
+    foreach( idx, str; strs ){
+        res[idx] = new ArrayWrapperString(str);
+    }
+    return res;
+}
+int codepointIndexToIndex( String str, int cpIndex ){
+    int cps = cpIndex;
+    int res = 0;
+    while( cps > 0 ){
+        cps--;
+        if( str[res] < 0x80 ){
+            res+=1;
+        }
+        else if( str[res] < 0xE0 ){
+            res+=2;
+        }
+        else if( str[res] & 0xF0 ){
+            res+=3;
+        }
+        else{
+            res+=4;
+        }
+    }
+    return res;
+}
+
+/++
+ +
+ +/
+int indexToCodepointIndex( String str, int index ){
+    if( index < 0 ) return index;
+    int i = 0;
+    int res = 0;
+    while( i < index ){
+        if( i >= str.length ){
+            break;
+        }
+        if( str[i] < 0x80 ){
+            i+=1;
+        }
+        else if( str[i] < 0xE0 ){
+            i+=2;
+        }
+        else if( str[i] & 0xF0 ){
+            i+=3;
+        }
+        else{
+            i+=4;
+        }
+        res++;
+    }
+    return res;
+}
+
+/++
+ + Get that String, that contains the next codepoint of a String.
+ +/
+String firstCodePointStr( String str, out int consumed ){
+    dchar[1] buf;
+    uint ate;
+    dchar[] res = str.toString32( buf, &ate );
+    consumed = ate;
+    return str[ 0 .. ate ];
+}
+
+/++
+ + Get first codepoint of a String. If an offset is needed, simply use a slice:
+ + ---
+ + dchar res = str[ offset .. $ ].firstCodePoint();
+ + ---
+ +/
+dchar firstCodePoint( String str ){
+    int dummy;
+    return firstCodePoint( str, dummy );
+}
+dchar firstCodePoint( String str, out int consumed ){
+    dchar[1] buf;
+    uint ate;
+    dchar[] res = str.toString32( buf, &ate );
+    consumed = ate;
+    if( ate is 0 || res.length is 0 ){
+        Trace.formatln( "dwthelper.utils {}: str.length={} str={:X2}", __LINE__, str.length, cast(ubyte[])str );
+    }
+    assert( ate > 0 );
+    assert( res.length is 1 );
+    return res[0];
+}
+dchar firstCodePoint( wchar[] str, out int consumed ){
+    dchar[1] buf;
+    uint ate;
+    dchar[] res = str.toString32( buf, &ate );
+    consumed = ate;
+    if( ate is 0 || res.length is 0 ){
+        Trace.formatln( "dwthelper.utils {}: str.length={} str={:X2}", __LINE__, str.length, cast(ubyte[])str );
+    }
+    assert( ate > 0 );
+    assert( res.length is 1 );
+    return res[0];
+}
+
+String dcharToString( dchar key ){
+    dchar[1] buf;
+    buf[0] = key;
+    return tango.text.convert.Utf.toString( buf );
+}
+
+int codepointCount( String str ){
+    scope dchar[] buf = new dchar[]( str.length );
+    uint ate;
+    dchar[] res = tango.text.convert.Utf.toString32( str, buf, &ate );
+    assert( ate is str.length );
+    return res.length;
+}
+
+//alias tango.text.convert.Utf.toString16 toString16;
+//alias tango.text.convert.Utf.toString toString;
+
+int toAbsoluteCodePointStartOffset( String str, int index ){
+    //Trace.formatln( "str={}, str.length={}, index={}", str, str.length, index );
+    //Trace.memory( str );
+    if( str.length is index ){
+        return index;
+    }
+    if( ( str[index] & 0x80 ) is 0x00 ) {
+        return index;
+    }
+    else{
+        int steps = 0;
+        while(( str[index] & 0xC0 ) is 0x80 ){
+            index--;
+            steps++;
+            if( steps > 3 || index < 0 ){
+                break;
+            }
+        }
+        if((( str[index] & 0xE0 ) is 0xC0) && ( steps <= 1 )){
+            // ok
+        }
+        else if((( str[index] & 0xF0 ) is 0xE0) && ( steps <= 2 )){
+            // ok
+        }
+        else if((( str[index] & 0xF8 ) is 0xF0) && ( steps <= 3 )){
+            // ok
+        }
+        else{
+            tango.text.convert.Utf.onUnicodeError( "invalid utf8 input to toAbsoluteCodePointStartOffset" );
+        }
+        return index;
+    }
+}
+int getRelativeCodePointOffset( String str, int startIndex, int searchRelCp ){
+    return getAbsoluteCodePointOffset( str, startIndex, searchRelCp ) - startIndex;
+}
+int getAbsoluteCodePointOffset( String str, int startIndex, int searchRelCp ){
+
+    //Trace.formatln( "str={}, str.length={}, startIndex={}, searchRelCp={}", str, str.length, startIndex, searchRelCp );
+    //Trace.memory( str );
+
+    int ignore;
+    int i = startIndex;
+    if( searchRelCp > 0 ){
+        while( searchRelCp !is 0 ){
+
+            if( ( i < str.length )
+            && (( str[i] & 0x80 ) is 0x00 ))
+            {
+                i+=1;
+            }
+            else if( ( i+1 < str.length )
+                && (( str[i+1] & 0xC0 ) is 0x80 )
+                && (( str[i  ] & 0xE0 ) is 0xC0 ))
+            {
+                i+=2;
+            }
+            else if( ( i+2 < str.length )
+                && (( str[i+2] & 0xC0 ) is 0x80 )
+                && (( str[i+1] & 0xC0 ) is 0x80 )
+                && (( str[i  ] & 0xF0 ) is 0xE0 ))
+            {
+                i+=3;
+            }
+            else if(( i+3 < str.length )
+                && (( str[i+3] & 0xC0 ) is 0x80 )
+                && (( str[i+2] & 0xC0 ) is 0x80 )
+                && (( str[i+1] & 0xC0 ) is 0x80 )
+                && (( str[i  ] & 0xF8 ) is 0xF0 ))
+            {
+                i+=4;
+            }
+            else{
+                Trace.formatln( "getAbsoluteCodePointOffset invalid utf8 characters:  {:X2}", cast(ubyte[]) str );
+                tango.text.convert.Utf.onUnicodeError( "invalid utf8 input", i );
+            }
+            searchRelCp--;
+        }
+    }
+    else if( searchRelCp < 0 ){
+        while( searchRelCp !is 0 ){
+            do{
+                i--;
+                if( i < 0 ){
+                    return startIndex-1;
+                }
+            } while(( str[i] & 0xC0 ) is 0x80 );
+            searchRelCp++;
+        }
+    }
+    return i;
+}
+int getAbsoluteCodePointOffset( wchar[] str, int startIndex, int searchRelCp ){
+    int ignore;
+    int i = startIndex;
+    if( searchRelCp > 0 ){
+        while( searchRelCp !is 0 ){
+
+            if( ( i < str.length )
+                && ( str[i] & 0xD800 ) !is 0xD800 )
+            {
+                i+=1;
+            }
+            else if( ( i+1 < str.length )
+                && (( str[i+1] & 0xDC00 ) is 0xDC00 )
+                && (( str[i  ] & 0xDC00 ) is 0xD800 ))
+            {
+                i+=2;
+            }
+            else{
+                Trace.formatln( "invalid utf16 characters:  {:X2}", cast(ubyte[]) str );
+                tango.text.convert.Utf.onUnicodeError( "invalid utf16 input", i );
+            }
+            searchRelCp--;
+        }
+    }
+    else if( searchRelCp < 0 ){
+        while( searchRelCp !is 0 ){
+            do{
+                i--;
+                if( i < 0 ){
+                    return startIndex-1;
+                    //Trace.formatln( "dwthelper.utils getRelativeCodePointOffset {}: str={}, startIndex={}, searchRelCp={}", __LINE__, str, startIndex, searchRelCp );
+                    //tango.text.convert.Utf.onUnicodeError( "invalid utf16 input", i );
+                }
+            } while(( str[i] & 0xDC00 ) is 0xDC00 );
+            searchRelCp++;
+        }
+    }
+    return i;
+}
+dchar getRelativeCodePoint( String str, int startIndex, int searchRelCp ){
+    int dummy;
+    return getRelativeCodePoint( str, startIndex, dummy );
+}
+dchar getRelativeCodePoint( String str, int startIndex, int searchRelCp, out int relIndex ){
+    relIndex = getRelativeCodePointOffset( str, startIndex, searchRelCp );
+    int ignore;
+    return firstCodePoint( str[ startIndex+relIndex .. $ ], ignore );
+}
+
+int utf8AdjustOffset( String str, int offset ){
+    if( str.length <= offset || offset <= 0 ){
+        return offset;
+    }
+    while(( str[offset] & 0xC0 ) is 0x80 ){
+        offset--;
+    }
+    return offset;
+}
+int utf8OffsetIncr( String str, int offset ){
+    int res = offset +1;
+    if( str.length <= res || res <= 0 ){
+        return res;
+    }
+    int tries = 4;
+    while(( str[res] & 0xC0 ) is 0x80 ){
+        res++;
+        assert( tries-- > 0 );
+    }
+    return res;
+}
+int utf8OffsetDecr( String str, int offset ){
+    int res = offset-1;
+    if( str.length <= res || res <= 0 ){
+        return res;
+    }
+    int tries = 4;
+    while(( str[res] & 0xC0 ) is 0x80 ){
+        res--;
+        assert( tries-- > 0 );
+    }
+    Trace.formatln( "utf8OffsetDecr {}->{}", offset, res );
+    Trace.memory( str );
+    return res;
+}
+
+class Character {
+    public static bool isUpperCase( dchar c ){
+        implMissing( __FILE__, __LINE__);
+        return false;
+    }
+    public static dchar toUpperCase( dchar c ){
+        dchar[] r = tango.text.Unicode.toUpper( [c] );
+        return r[0];
+    }
+    public static dchar toLowerCase( dchar c ){
+        dchar[] r = tango.text.Unicode.toLower( [c] );
+        return r[0];
+    }
+    public static bool isWhitespace( dchar c ){
+        return tango.text.Unicode.isWhitespace( c );
+    }
+    public static bool isDigit( dchar c ){
+        return tango.text.Unicode.isDigit( c );
+    }
+    public static bool isLetterOrDigit( dchar c ){
+        return isDigit(c) || isLetter(c);
+    }
+    public static bool isUnicodeIdentifierPart(char ch){
+        implMissing( __FILE__, __LINE__);
+        return false;
+    }
+    public static bool isUnicodeIdentifierStart(char ch){
+        implMissing( __FILE__, __LINE__);
+        return false;
+    }
+    public static bool isIdentifierIgnorable(char ch){
+        implMissing( __FILE__, __LINE__);
+        return false;
+    }
+    public static bool isJavaIdentifierPart(char ch){
+        implMissing( __FILE__, __LINE__);
+        return false;
+    }
+
+    this( char c ){
+        // must be correct for container storage
+        implMissing( __FILE__, __LINE__);
+    }
+}
+
+String new_String( String cont, int offset, int len ){
+    return cont[ offset .. offset+len ].dup;
+}
+String new_String( String cont ){
+    return cont.dup;
+}
+String String_valueOf( bool v ){
+    return v ? "true" : "false";
+}
+String String_valueOf( int v ){
+    return tango.text.convert.Integer.toString(v);
+}
+String String_valueOf( long v ){
+    return tango.text.convert.Integer.toString(v);
+}
+String String_valueOf( float v ){
+    return tango.text.convert.Float.toString(v);
+}
+String String_valueOf( double v ){
+    return tango.text.convert.Float.toString(v);
+}
+String String_valueOf( dchar v ){
+    return dcharToString(v);
+}
+String String_valueOf( char[] v ){
+    return v.dup;
+}
+String String_valueOf( char[] v, int offset, int len ){
+    return v[ offset .. offset+len ].dup;
+}
+String String_valueOf( Object v ){
+    return v is null ? "null" : v.toString();
+}
+bool CharacterIsDefined( dchar ch ){
+    return (ch in tango.text.UnicodeData.unicodeData) !is null;
+}
+dchar CharacterFirstToLower( String str ){
+    int consumed;
+    return CharacterFirstToLower( str, consumed );
+}
+dchar CharacterFirstToLower( String str, out int consumed ){
+    dchar[1] buf;
+    buf[0] = firstCodePoint( str, consumed );
+    dchar[] r = tango.text.Unicode.toLower( buf );
+    return r[0];
+}
+int length( String str ){
+    return str.length;
+}
+dchar CharacterToLower( dchar c ){
+    dchar[] r = tango.text.Unicode.toLower( [c] );
+    return r[0];
+}
+dchar CharacterToUpper( dchar c ){
+    dchar[] r = tango.text.Unicode.toUpper( [c] );
+    return r[0];
+}
+bool CharacterIsWhitespace( dchar c ){
+    return tango.text.Unicode.isWhitespace( c );
+}
+bool CharacterIsDigit( dchar c ){
+    return tango.text.Unicode.isDigit( c );
+}
+bool CharacterIsLetter( dchar c ){
+    return tango.text.Unicode.isLetter( c );
+}
+public String toUpperCase( String str ){
+    return tango.text.Unicode.toUpper( str );
+}
+
+public String replaceFirst( String str, String regex, String replacement ){
+    implMissing(__FILE__,__LINE__);
+    return str;
+}
+
+public int indexOf( String str, char searched ){
+    int res = tango.text.Util.locate( str, searched );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public int indexOf( String str, char searched, int startpos ){
+    int res = tango.text.Util.locate( str, searched, startpos );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public int indexOf(String str, String ch){
+    return indexOf( str, ch, 0 );
+}
+
+public int indexOf(String str, String ch, int start){
+    int res = tango.text.Util.locatePattern( str, ch, start );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public int lastIndexOf(String str, char ch){
+    return lastIndexOf( str, ch, str.length );
+}
+public int lastIndexOf(String str, char ch, int formIndex){
+    int res = tango.text.Util.locatePrior( str, ch, formIndex );
+    if( res is str.length ) res = -1;
+    return res;
+}
+public int lastIndexOf(String str, String ch ){
+    return lastIndexOf( str, ch, str.length );
+}
+public int lastIndexOf(String str, String ch, int start ){
+    int res = tango.text.Util.locatePatternPrior( str, ch, start );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public String replaceAll( String str, String regex, String replacement ){
+    implMissing(__FILE__,__LINE__);
+    return null;
+}
+public String replace( String str, char from, char to ){
+    return tango.text.Util.replace( str.dup, from, to );
+}
+
+public String substring( String str, int start ){
+    return str[ start .. $ ].dup;
+}
+
+public String substring( String str, int start, int end ){
+    return str[ start .. end ].dup;
+}
+
+public wchar[] substring( wchar[] str, int start ){
+    return str[ start .. $ ].dup;
+}
+
+public wchar[] substring( wchar[] str, int start, int end ){
+    return str[ start .. end ].dup;
+}
+
+public char charAt( String str, int pos ){
+    return str[ pos ];
+}
+
+public void getChars( String src, int srcBegin, int srcEnd, String dst, int dstBegin){
+    dst[ dstBegin .. dstBegin + srcEnd - srcBegin ] = src[ srcBegin .. srcEnd ];
+}
+
+public wchar[] toWCharArray( String str ){
+    return toString16(str);
+}
+
+public char[] toCharArray( String str ){
+    return str;
+}
+
+public bool endsWith( String src, String pattern ){
+    if( src.length < pattern.length ){
+        return false;
+    }
+    return src[ $-pattern.length .. $ ] == pattern;
+}
+
+public bool equals( String src, String other ){
+    return src == other;
+}
+
+public bool equalsIgnoreCase( String src, String other ){
+    return tango.text.Unicode.toFold(src) == tango.text.Unicode.toFold(other);
+}
+
+public int compareToIgnoreCase( String src, String other ){
+    return compareTo( tango.text.Unicode.toFold(src), tango.text.Unicode.toFold(other));
+}
+public int compareTo( String src, String other ){
+    return typeid(String).compare( cast(void*)&src, cast(void*)&other );
+}
+
+public bool startsWith( String src, String pattern ){
+    if( src.length < pattern.length ){
+        return false;
+    }
+    return src[ 0 .. pattern.length ] == pattern;
+}
+
+public String toLowerCase( String src ){
+    return tango.text.Unicode.toLower( src );
+}
+
+public hash_t toHash( String src ){
+    return typeid(String).getHash(&src);
+}
+
+public String trim( String str ){
+    return tango.text.Util.trim( str ).dup;
+}
+public String intern( String str ){
+    return str;
+}
+
+/++
+ + This is like tango.stdc.stringz.toStringz, but in case of an empty input string,
+ + this function returns a pointer to a null value instead of a null ptr.
+ +/
+public char* toStringzValidPtr( String src ){
+    if( src ){
+        return src.toStringz();
+    }
+    else{
+        static const String nullPtr = "\0";
+        return nullPtr.ptr;
+    }
+}
+
+public alias tango.stdc.stringz.toStringz toStringz;
+public alias tango.stdc.stringz.toString16z toString16z;
+public alias tango.stdc.stringz.fromStringz fromStringz;
+public alias tango.stdc.stringz.fromString16z fromString16z;
+
+static String toHex(uint value, bool prefix = true, int radix = 8){
+    return tango.text.convert.Integer.toString(
+            value,
+            radix is 10 ? "d" :
+            radix is  8 ? "o" :
+            radix is 16 ? "x" :
+                          "d" );
+}
+
+class RuntimeException : Exception {
+    this( char[] file, long line, char[] msg = null){
+        super( msg, file, line );
+    }
+    this( String e = null){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+        next = e;
+    }
+    public Exception getCause() {
+        return next;
+    }
+
+}
+class IndexOutOfBoundsException : Exception {
+    this( String e = null){
+        super(e);
+    }
+}
+
+class UnsupportedOperationException : RuntimeException {
+    this( String e = null){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+    }
+}
+class NumberFormatException : IllegalArgumentException {
+    this( String e ){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+    }
+}
+class NullPointerException : Exception {
+    this( String e = null ){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+    }
+}
+class IllegalStateException : Exception {
+    this( String e = null ){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+    }
+}
+class InterruptedException : Exception {
+    this( String e = null ){
+        super(e);
+    }
+    this( Exception e ){
+        super(e.toString);
+    }
+}
+class InvocationTargetException : Exception {
+    Exception cause;
+    this( Exception e = null, String msg = null ){
+        super(msg);
+        cause = e;
+    }
+
+    alias getCause getTargetException;
+    Exception getCause(){
+        return cause;
+    }
+}
+class MissingResourceException : Exception {
+    String classname;
+    String key;
+    this( String msg, String classname, String key ){
+        super(msg);
+        this.classname = classname;
+        this.key = key;
+    }
+}
+class ParseException : Exception {
+    this( String e = null ){
+        super(e);
+    }
+}
+class ClassCastException : Exception {
+    this( String e = null ){
+        super(e);
+    }
+}
+
+interface Cloneable{
+}
+
+interface Comparable {
+    int compareTo(Object o);
+}
+interface Comparator {
+    int compare(Object o1, Object o2);
+}
+interface EventListener{
+}
+
+class EventObject {
+    protected Object source;
+
+    public this(Object source) {
+        if (source is null)
+        throw new IllegalArgumentException( "null arg" );
+        this.source = source;
+    }
+
+    public Object getSource() {
+        return source;
+    }
+
+    public override String toString() {
+        return this.classinfo.name ~ "[source=" ~ source.toString() ~ "]";
+    }
+}
+
+private struct GCStats {
+    size_t poolsize;        // total size of pool
+    size_t usedsize;        // bytes allocated
+    size_t freeblocks;      // number of blocks marked FREE
+    size_t freelistsize;    // total of memory on free lists
+    size_t pageblocks;      // number of blocks marked PAGE
+}
+private extern(C) GCStats gc_stats();
+
+size_t RuntimeTotalMemory(){
+    GCStats s = gc_stats();
+    return s.poolsize;
+}
+
+String ExceptionGetLocalizedMessage( Exception e ){
+    return e.msg;
+}
+
+void ExceptionPrintStackTrace( Exception e ){
+    ExceptionPrintStackTrace( e, Stderr );
+}
+void ExceptionPrintStackTrace( Exception e, FormatOutput!(char) print ){
+    Exception exception = e;
+    while( exception !is null ){
+        print.formatln( "Exception in {}({}): {}", exception.file, exception.line, exception.msg );
+        if( exception.info !is null ){
+            foreach( msg; exception.info ){
+                print.formatln( "trc {}", msg );
+            }
+        }
+        exception = exception.next;
+    }
+}
+
+class Reader{
+    protected Object   lock;
+    protected this(){
+        implMissing(__FILE__,__LINE__);
+    }
+    protected this(Object lock){
+        implMissing(__FILE__,__LINE__);
+    }
+    abstract  void  close();
+    void mark(int readAheadLimit){
+        implMissing(__FILE__,__LINE__);
+    }
+    bool markSupported(){
+        implMissing(__FILE__,__LINE__);
+        return false;
+    }
+    int read(){
+        implMissing(__FILE__,__LINE__);
+        return 0;
+    }
+    int read(char[] cbuf){
+        implMissing(__FILE__,__LINE__);
+        return 0;
+    }
+    abstract int read(char[] cbuf, int off, int len);
+    bool ready(){
+        implMissing(__FILE__,__LINE__);
+        return false;
+    }
+    void reset(){
+        implMissing(__FILE__,__LINE__);
+    }
+    long skip(long n){
+        implMissing(__FILE__,__LINE__);
+        return 0;
+    }
+}
+interface Writer{
+}
+
+
+class Collator : Comparator {
+    public static Collator getInstance(){
+        implMissing( __FILE__, __LINE__ );
+        return null;
+    }
+    private this(){
+    }
+    int compare(Object o1, Object o2){
+        implMissing( __FILE__, __LINE__ );
+        return 0;
+    }
+}
+
+template arraycast(T) {
+    T[] arraycast(U) (U[] u) {
+        static if (
+            (is (T == interface ) && is (U == interface )) ||
+            (is (T == class ) && is (U == class ))) {
+            return(cast(T[])u);
+        }
+        else {
+            int l = u.length;
+            T[] res;
+            res.length = l;
+            for (int i = 0; i < l; i++) {
+                res[i] = cast(T)u[i];
+            }
+            return(res);
+        }
+    }
+}
+
+String stringcast( Object o ){
+    if( auto str = cast(ArrayWrapperString) o ){
+        return str.array;
+    }
+    return null;
+}
+String[] stringcast( Object[] objs ){
+    String[] res = new String[](objs.length);
+    foreach( idx, obj; objs ){
+        res[idx] = stringcast(obj);
+    }
+    return res;
+}
+ArrayWrapperString stringcast( String str ){
+    return new ArrayWrapperString( str );
+}
+ArrayWrapperString[] stringcast( String[] strs ){
+    ArrayWrapperString[] res = new ArrayWrapperString[ strs.length ];
+    foreach( idx, str; strs ){
+        res[idx] = stringcast(str);
+    }
+    return res;
+}
+
+String[] stringArrayFromObject( Object obj ){
+    if( auto wrapper = cast(ArrayWrapperString2)obj ){
+        return wrapper.array;
+    }
+    if( auto wrapper = cast(ArrayWrapperObject)obj ){
+        String[] res = new String[ wrapper.array.length ];
+        foreach( idx, o; wrapper.array ){
+            if( auto swrapper = cast(ArrayWrapperString) o ){
+                res[idx] = swrapper.array;
+            }
+        }
+        return res;
+    }
+    assert( obj is null ); // if not null, it was the wrong type
+    return null;
+}
+
+T[] arrayFromObject(T)( Object obj ){
+    if( auto wrapper = cast(ArrayWrapperObject)obj ){
+        T[] res = new T[ wrapper.array.length ];
+        foreach( idx, o; wrapper.array ){
+            res[idx] = cast(T)o;
+        }
+        return res;
+    }
+    assert( obj is null ); // if not null, it was the wrong type
+    return null;
+}
+
+
+bool ArrayEquals(T)( T[] a, T[] b ){
+    if( a.length !is b.length ){
+        return false;
+    }
+    for( int i = 0; i < a.length; i++ ){
+        static if( is( T==class) || is(T==interface)){
+            if( a[i] !is null && b[i] !is null ){
+                if( a[i] != b[i] ){
+                    return false;
+                }
+            }
+            else if( a[i] is null && b[i] is null ){
+            }
+            else{
+                return false;
+            }
+        }
+        else{
+            if( a[i] != b[i] ){
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+/+int SeqIndexOf(T)( tango.util.collection.model.Seq.Seq!(T) s, T src ){
+    int idx;
+    foreach( e; s ){
+        if( e == src ){
+            return idx;
+        }
+        idx++;
+    }
+    return -1;
+}+/
+
+int arrayIndexOf(T)( T[] arr, T v ){
+    int res = -1;
+    int idx = 0;
+    foreach( p; arr ){
+        if( p == v){
+            res = idx;
+            break;
+        }
+        idx++;
+    }
+    return res;
+}
+
+// int seqIndexOf( tango.util.collection.model.Seq.Seq!(Object) seq, Object v ){
+//     int res = -1;
+//     int idx = 0;
+//     foreach( p; seq ){
+//         if( p == v){
+//             res = idx;
+//             break;
+//         }
+//         idx++;
+//     }
+//     return res;
+// }
+
+void PrintStackTrace( int deepth = 100, String prefix = "trc" ){
+    auto e = new Exception( null );
+    int idx = 0;
+    const start = 3;
+    foreach( msg; e.info ){
+        if( idx >= start && idx < start+deepth ) {
+            Trace.formatln( "{}: {}", prefix, msg );
+        }
+        idx++;
+    }
+}
+
+struct ImportData{
+    void[] data;
+    String name;
+
+    public static ImportData opCall( void[] data, String name ){
+        ImportData res;
+        res.data = data;
+        res.name = name;
+        return res;
+    }
+}
+
+template getImportData(String name ){
+    const ImportData getImportData = ImportData( import(name), name );
+}
+
+interface CharSequence {
+    char           charAt(int index);
+    int             length();
+    CharSequence    subSequence(int start, int end);
+    String          toString();
+}
+
+class StringCharSequence : CharSequence {
+    private String str;
+    this( String str ){
+        this.str = str;
+    }
+    char           charAt(int index){
+        return str[index];
+    }
+    int             length(){
+        return str.length;
+    }
+    CharSequence    subSequence(int start, int end){
+        return new StringCharSequence( str[ start .. end ]);
+    }
+    String          toString(){
+        return str;
+    }
+}
+
+
+