Renaming of files in preparation for code style tools.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

1 files changed, 970 insertions, 0 deletions

diff --git a/kspread/kspread_value.cpp b/kspread/kspread_value.cpp
new file mode 100644
index 00000000..898abd11
--- /dev/null
+++ b/kspread/kspread_value.cpp
@@ -0,0 +1,970 @@
+/* This file is part of the KDE project
+   Copyright (C) 2003,2004 Ariya Hidayat <ariya@kde.org>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License.
+
+   This library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#include "kspread_value.h"
+
+#include <kdebug.h>
+
+#include <tqstring.h>
+#include <tqtextstream.h>
+
+#include <float.h>
+#include <math.h>
+#include <limits.h>
+
+using namespace KSpread;
+
+// helper struct for array implementation
+// this struct holds one piece of an array of size CHUNK_COLS x CHUNK_ROWS
+// or less
+struct arrayChunk {
+  arrayChunk (int c, int r) {
+    cols = c; rows = r;
+    ptr = new Value* [c*r];
+    for (int i = 0; i < c*r; ++i) ptr[i] = 0;
+  }
+  
+  ~arrayChunk () {
+    if (!ptr) return;
+    unsigned count = cols * rows;
+    for (unsigned i = 0; i < count; i++)
+      delete ptr[i];
+    delete [] ptr;
+  }
+
+  arrayChunk( const arrayChunk& ac )
+  {
+    operator=( ac );
+  }
+  
+  arrayChunk& operator= ( const arrayChunk& ac )
+  {
+    cols = ac.cols; rows = ac.rows;
+    ptr = new Value* [cols*rows];
+    unsigned count = cols * rows;
+    for( unsigned i = 0; i < count; i++ )
+      if( ac.ptr[i] )
+        ptr[i] = new Value( *ac.ptr[i] );
+      else
+        ptr[i] = 0;
+    return *this;
+  }
+  
+  Value **ptr;
+  unsigned cols, rows;
+};
+
+#define CHUNK_COLS 128
+#define CHUNK_ROWS 128
+// helper class for array implementation
+class ValueArray
+{
+public:
+  arrayChunk **chunks;
+  unsigned columns;
+  unsigned rows;
+  unsigned chunkCols, chunkRows;
+  
+  ValueArray(): chunks(0), columns(0), rows(0), chunkCols(0), chunkRows(0) {};
+  
+  ~ValueArray()
+  { 
+    clear();
+  };
+   
+  ValueArray( const ValueArray& va )
+    : chunks(0), columns(0), rows(0), chunkCols(0), chunkRows(0)
+  {
+    operator=( va );
+  }
+  
+  ValueArray& operator= ( const ValueArray& va )
+  {
+    init( va.columns, va.rows );
+    unsigned count = chunkCols * chunkRows;
+    for( unsigned i = 0; i < count; i++ )
+      if( va.chunks[i] )
+        chunks[i] = new arrayChunk (*va.chunks[i]);
+      else
+        chunks[i] = 0;
+    return *this;
+  }
+   
+  void clear()
+  {
+    int c = columns / CHUNK_COLS;
+    int r = rows / CHUNK_ROWS;
+    if (columns % CHUNK_COLS != 0) c++;
+    if (rows % CHUNK_ROWS != 0) r++;
+    if( !chunks ) return;
+    unsigned count = c*r;
+    if( !count ) return;
+    for (unsigned i = 0; i < count; i++)
+      delete chunks[i];
+    delete [] chunks;
+    chunks = 0;
+    columns = rows = chunkCols = chunkRows = 0;
+  }
+  
+  void init( unsigned c, unsigned r )
+  {
+    if (chunks) clear();
+    columns = c; rows = r;
+    int cc = columns / CHUNK_COLS;
+    int rr = rows / CHUNK_ROWS;
+    if (columns % CHUNK_COLS != 0) cc++;
+    if (rows % CHUNK_ROWS != 0) rr++;
+    chunkCols = cc;
+    chunkRows = rr;
+    unsigned count = cc*rr;
+    chunks = new arrayChunk* [count];
+    for( unsigned i = 0; i < count; i++ )
+      chunks[i] = 0;
+  }
+  
+  Value* at( unsigned c, unsigned r ) const
+  {
+    if( !chunks ) return 0;
+    if( c >= columns ) return 0;
+    if( r >= rows ) return 0;
+    
+    int col = c / CHUNK_COLS;
+    int row = r / CHUNK_ROWS;
+    int cpos = c % CHUNK_COLS;
+    int rpos = r % CHUNK_ROWS;
+    arrayChunk *chunk = chunks[row * chunkCols + col];
+    if (!chunk) return 0;
+    return chunk->ptr[rpos * chunk->cols + cpos];
+  };
+  
+  void set( unsigned c, unsigned r, Value* v )
+  {
+    if (!chunks) return;
+    if( c >= columns ) return;
+    if( r >= rows ) return;
+    unsigned col = c / CHUNK_COLS;
+    unsigned row = r / CHUNK_ROWS;
+    unsigned cpos = c % CHUNK_COLS;
+    unsigned rpos = r % CHUNK_ROWS;
+    arrayChunk *chunk = chunks[row * chunkCols + col];
+    if (!chunk) {
+      unsigned cc = (col==chunkCols-1) ? (columns % CHUNK_COLS) : CHUNK_COLS;
+      unsigned rr = (row==chunkRows-1) ? (rows % CHUNK_ROWS) : CHUNK_ROWS;
+      chunk = new arrayChunk (cc, rr);
+      chunks[row * chunkCols + col] = chunk;
+    }
+    delete chunk->ptr[rpos * chunk->cols + cpos];
+    chunk->ptr[rpos * chunk->cols + cpos] = v;
+  }
+
+  bool operator==( const ValueArray& other ) const
+  {
+    if ( columns != other.columns || rows != other.rows )
+      return false;
+    for ( unsigned r = 0; r < rows; ++r )
+      for ( unsigned c = 0; c < columns; ++c ) {
+        Value* v1 = at( c, r );
+        Value* v2 = other.at( c, r );
+        if ( ( v1 && !v2 ) || ( !v1 && v2 ) )
+            return false;
+        if ( !( v1 && v2 && *v1 == *v2 ) )
+            return false;
+    }
+    return true;
+  }
+
+};
+
+
+// helper class for Value
+class KSpread::ValueData
+{
+  public:
+
+    Value::Type type:4;
+    Value::Format format:4;
+
+    // reference count, at least one when object exists
+    unsigned int count:24;
+
+    union
+    {
+      bool b;
+      long i;
+      double f;
+      TQString* ps;
+      ValueArray* pa;
+    };
+
+    // create empty data
+    ValueData(): type( Value::Empty ),
+      format (Value::fmt_None), count( 1 ), ps( 0 ) { };
+
+    // destroys data
+    ~ValueData(){ if( this == s_null ) s_null = 0;
+       if( type == Value::Array ) delete pa;
+       if( type == Value::String ) delete ps;
+       if( type == Value::Error ) delete ps;
+     }
+
+    // static empty data to be shared
+    static ValueData* null()
+      { if( !s_null) s_null = new ValueData; else s_null->ref(); return s_null; }
+
+    // increase reference count
+    void ref() { count++; }
+
+    // decrease reference count
+    void unref()
+      {  --count; if( !count ) delete this; }
+
+    // true if it's null (which is shared)
+    bool isNull(){ return this == s_null; }
+
+    /** set most probable formatting based on the type */
+    void setFormatByType ();
+
+  private:
+
+    static ValueData* s_null;
+};
+
+void KSpread::ValueData::setFormatByType ()
+{
+  switch (type) {
+    case Value::Empty:
+      format = Value::fmt_None;
+    break;
+    case Value::Boolean:
+      format = Value::fmt_Boolean;
+    break;
+    case Value::Integer:
+      format = Value::fmt_Number;
+    break;
+    case Value::Float:
+      format = Value::fmt_Number;
+    break;
+    case Value::String:
+      format = Value::fmt_String;
+    break;
+    case Value::Array:
+      format = Value::fmt_None;
+    break;
+    case Value::CellRange:
+      format = Value::fmt_None;
+    break;
+    case Value::Error:
+      format = Value::fmt_String;
+    break;
+  };
+}
+
+// to be shared between all empty value
+ValueData* ValueData::s_null = 0;
+
+// static things
+Value ks_value_empty;
+Value ks_error_div0;
+Value ks_error_na;
+Value ks_error_name;
+Value ks_error_null;
+Value ks_error_num;
+Value ks_error_ref;
+Value ks_error_value;
+
+// create an empty value
+Value::Value()
+{
+  d = ValueData::null();
+}
+
+// destructor
+Value::~Value()
+{
+  d->unref();
+}
+
+// create value of certain type
+Value::Value( Value::Type _type )
+{
+  d = new ValueData;
+  d->type = _type;
+  d->setFormatByType ();
+}
+
+// copy constructor
+Value::Value( const Value& _value )
+{
+  d = ValueData::null();
+  assign( _value );
+}
+
+// assignment operator
+Value& Value::operator=( const Value& _value )
+{
+  return assign( _value );
+}
+
+// comparison operator - returns true only if strictly identical, unlike equal()/compare()
+bool Value::operator==( const Value& v ) const
+{
+  const ValueData* n = v.d;
+  if ( (uint)d->type != n->type )
+    return false;
+  switch( d->type )
+  {
+    case Empty: return true;
+    case Boolean: return n->b == d->b;
+    case Integer: return n->i == d->i;
+    case Float:   return compare( n->f, d->f ) == 0;
+    case String:  return *n->ps == *d->ps;
+    case Array:   return *n->pa == *d->pa;
+    case Error:   return *n->ps == *d->ps;
+    default: break;
+  }
+  kdWarning() << "Unhandled type in Value::operator==: " << d->type << endl;
+  return false;
+}
+
+// create a boolean value
+Value::Value( bool b )
+{
+  d = ValueData::null();
+  setValue( b );
+}
+
+// create an integer value
+Value::Value( long i )
+{
+  d = ValueData::null();
+  setValue ( i );
+}
+
+// create an integer value
+Value::Value( int i )
+{
+  d = ValueData::null();
+  setValue ( i );
+}
+
+// create a floating-point value
+Value::Value( double f )
+{
+  d = ValueData::null();
+  setValue( f );
+}
+
+// create a string value
+Value::Value( const TQString& s )
+{
+  d = ValueData::null();
+  setValue( s );
+}
+
+// create a string value
+Value::Value (const char *s)
+{
+  d = ValueData::null();
+  setValue (TQString (s));
+}
+
+// create a floating-point value from date/time
+Value::Value( const TQDateTime& dt )
+{
+  d = ValueData::null();
+  setValue( dt );
+}
+
+// create a floating-point value from time
+Value::Value( const TQTime& dt )
+{
+  d = ValueData::null();
+  setValue( dt );
+}
+
+// create a floating-point value from date
+Value::Value( const TQDate& dt )
+{
+  d = ValueData::null();
+  setValue( dt );
+}
+
+// create an array value
+Value::Value( unsigned columns, unsigned rows )
+{
+  d = new ValueData;
+  d->type = Array;
+  d->format = fmt_None;
+  d->pa = new ValueArray;
+  d->pa->init( columns, rows );
+}
+
+// assign value from other
+// shallow copy: only copy the data pointer
+Value& Value::assign( const Value& _value )
+{
+  d->unref();
+  d = _value.d;
+  d->ref();
+  return *this;
+}
+
+// return type of the value
+Value::Type Value::type() const
+{
+  return d ? d->type : Empty;
+}
+
+// set the value to boolean
+void Value::setValue( bool b )
+{
+  detach();
+  d->type = Boolean;
+  d->b = b;
+  d->format = fmt_Boolean;
+}
+
+// get the value as boolean
+bool Value::asBoolean() const
+{
+  bool result = false;
+
+  if( type() == Value::Boolean )
+    result = d->b;
+
+  return result;
+}
+
+// set the value to integer
+void Value::setValue( long i )
+{
+  detach();
+  d->type = Integer;
+  d->i = i;
+  d->format = fmt_Number;
+}
+
+// set the value to integer
+void Value::setValue( int i )
+{
+  detach();
+  d->type = Integer;
+  d->i = static_cast<long>( i );
+  d->format = fmt_Number;
+}
+
+// get the value as integer
+long Value::asInteger() const
+{
+  long result = 0;
+
+  if( type() == Value::Integer )
+    result = d->i;
+
+  if( type() == Value::Float )
+    result = static_cast<long>(d->f);
+
+  return result;
+}
+
+void Value::setValue( const Value& v )
+{
+  assign( v );
+}
+
+// set the value as floating-point
+void Value::setValue( double f )
+{
+  detach();
+  d->type = Float;
+  d->f = f;
+  d->format = fmt_Number;
+}
+
+// get the value as floating-point
+double Value::asFloat() const
+{
+  double result = 0.0;
+
+  if( type() == Value::Float )
+    result = d->f;
+
+  if( type() == Value::Integer )
+    result = static_cast<double>(d->i);
+
+  return result;
+}
+
+// set the value as string
+void Value::setValue( const TQString& s )
+{
+  detach();
+  d->type = String;
+  d->ps = new TQString( s );
+  d->format = fmt_String;
+}
+
+// get the value as string
+TQString Value::asString() const
+{
+  TQString result;
+
+  if( type() == Value::String )
+  if( d->ps )
+    result = TQString( *d->ps );
+
+  return result;
+}
+
+// set error message
+void Value::setError( const TQString& msg )
+{
+  detach();
+  d->type = Error;
+  d->ps = new TQString( msg );
+}
+
+// get error message
+TQString Value::errorMessage() const
+{
+  TQString result;
+
+  if( type() == Value::Error )
+  if( d->ps )
+    result = TQString( *d->ps );
+
+  return result;
+}
+
+// set the value as date/time
+// NOTE: date/time is stored as serial number
+// Day 61 means 1st of March, 1900
+void Value::setValue( const TQDateTime& dt )
+{
+  // reference is 31 Dec, 1899 midnight
+  TQDate refDate( 1899, 12, 31 );
+  TQTime refTime( 0, 0 );
+
+  int i = refDate.daysTo( dt.date() ) + 1;
+  i += refTime.secsTo( dt.time() ) / 86400;
+
+  setValue( i );
+  d->format = fmt_DateTime;
+}
+
+void Value::setValue( const TQTime& time )
+{
+  // reference time is midnight
+  TQTime refTime( 0, 0 );
+  int i = refTime.msecsTo( time ) /* / 86400000 */;
+
+  setValue( i );
+  d->format = fmt_Time;
+}
+
+void Value::setValue( const TQDate& date )
+{
+  // reference date is 31 Dec, 1899
+  TQDate refDate = TQDate( 1899, 12, 31 );
+  int i = refDate.daysTo( date ) + 1;
+
+  setValue( i );
+  d->format = fmt_Date;
+}
+
+// get the value as date/time
+TQDateTime Value::asDateTime() const
+{
+  return TQDateTime( asDate(), asTime() );
+}
+
+// get the value as date
+TQDate Value::asDate() const
+{
+  TQDate dt( 1899, 12, 30 );
+
+  int i = asInteger();
+  dt = dt.addDays( i );
+  
+  return dt;
+}
+
+// get the value as time
+TQTime Value::asTime() const
+{
+  TQTime dt;
+  
+  int i = asInteger();
+  dt = dt.addMSecs(i) /*( f * 86400 * 1000  )*/;
+  
+  return dt;
+}
+
+Value::Format Value::format() const
+{
+  return d ? d->format : fmt_None;
+}
+
+void Value::setFormat (Value::Format fmt)
+{
+  detach();
+  d->format = fmt;
+}
+
+Value Value::element( unsigned column, unsigned row ) const
+{
+  if( (uint)d->type != Array ) return *this;
+  if( !d->pa ) return *this;
+  Value* v = d->pa->at (column % columns(), row % rows());
+  return v ? Value( *v ) : empty();
+}
+
+void Value::setElement( unsigned column, unsigned row, const Value& v )
+{
+  if( (uint)d->type != Array ) return;
+  if( !d->pa ) return;
+  detach();
+  d->pa->set( column, row, new Value( v ) );
+}
+
+unsigned Value::columns() const
+{
+  if( (uint)d->type != Array ) return 1;
+  if( !d->pa ) return 1;
+  return d->pa->columns;
+}
+
+unsigned Value::rows() const
+{
+  if( (uint)d->type != Array ) return 1;
+  if( !d->pa ) return 1;
+  return d->pa->rows;
+}
+
+// reference to empty value
+const Value& Value::empty()
+{
+  return ks_value_empty;
+}
+
+// reference to #DIV/0! error
+const Value& Value::errorDIV0()
+{
+  if( !ks_error_div0.isError() )
+    ks_error_div0.setError( "#DIV/0!" );
+  return ks_error_div0;
+}
+
+// reference to #N/A error
+const Value& Value::errorNA()
+{
+  if( !ks_error_na.isError() )
+    ks_error_na.setError( "#N/A" );
+  return ks_error_na;
+}
+
+// reference to #NAME? error
+const Value& Value::errorNAME()
+{
+  if( !ks_error_name.isError() )
+    ks_error_name.setError( "#NAME?" );
+  return ks_error_name;
+}
+
+// reference to #NUM! error
+const Value& Value::errorNUM()
+{
+  if( !ks_error_num.isError() )
+    ks_error_num.setError( "#NUM!" );
+  return ks_error_num;
+}
+
+// reference to #NULL! error
+const Value& Value::errorNULL()
+{
+  if( !ks_error_null.isError() )
+    ks_error_null.setError( "#NULL!" );
+  return ks_error_null;
+}
+
+// reference to #REF! error
+const Value& Value::errorREF()
+{
+  if( !ks_error_ref.isError() )
+    ks_error_ref.setError( "#REF!" );
+  return ks_error_ref;
+}
+
+// reference to #VALUE! error
+const Value& Value::errorVALUE()
+{
+  if( !ks_error_value.isError() )
+    ks_error_value.setError( "#VALUE!" );
+  return ks_error_value;
+}
+
+// detach, create deep copy of ValueData
+void Value::detach()
+{
+  if( d->isNull() || ( d->count > 1 ) )
+  {
+    ValueData* n;
+    n = new ValueData;
+
+    n->type = d->type;
+    switch( n->type )
+    {
+    case Empty: break;
+    case Boolean: n->b = d->b; break;
+    case Integer: n->i = d->i; break;
+    case Float:   n->f = d->f; break;
+    case String:  n->ps = new TQString( *d->ps ); break;
+    case Array:   n->pa = new ValueArray; *n->pa = (*d->pa); break;
+    case Error:   n->ps = new TQString( *d->ps ); break;
+    default: break;
+    }
+
+    d->unref();
+    d = n;
+  }
+}
+
+int Value::compare( double v1, double v2 )
+{
+  double v3 = v1 - v2;
+  if( v3 > DBL_EPSILON ) return 1;
+  if( v3 < -DBL_EPSILON ) return -1;
+  return 0;
+}
+
+bool Value::isZero( double v )
+{
+  return fabs( v ) < DBL_EPSILON;
+}
+
+bool Value::isZero() const
+{
+  if( !isNumber() ) return false;
+  return isZero( asFloat() );
+}
+
+bool Value::allowComparison( const Value& v ) const
+{
+  Value::Type t1 = d->type;
+  Value::Type t2 = v.type();
+  
+  if( ( t1 == Empty ) && ( t2 == Empty ) ) return true;
+  if( ( t1 == Empty ) && ( t2 == String ) ) return true;
+  
+  if( ( t1 == Boolean ) && ( t2 == Boolean ) ) return true;
+  if( ( t1 == Boolean ) && ( t2 == Integer ) ) return true;
+  if( ( t1 == Boolean ) && ( t2 == Float ) ) return true;
+  if( ( t1 == Boolean ) && ( t2 == String ) ) return true;
+    
+  if( ( t1 == Integer ) && ( t2 == Boolean ) ) return true;
+  if( ( t1 == Integer ) && ( t2 == Integer ) ) return true;
+  if( ( t1 == Integer ) && ( t2 == Float ) ) return true;
+  if( ( t1 == Integer ) && ( t2 == String ) ) return true;
+  
+  if( ( t1 == Float ) && ( t2 == Boolean ) ) return true;
+  if( ( t1 == Float ) && ( t2 == Integer ) ) return true;
+  if( ( t1 == Float ) && ( t2 == Float ) ) return true;
+  if( ( t1 == Float ) && ( t2 == String ) ) return true;
+  
+  if( ( t1 == String ) && ( t2 == Empty ) ) return true;
+  if( ( t1 == String ) && ( t2 == Boolean ) ) return true;
+  if( ( t1 == String ) && ( t2 == Integer ) ) return true;
+  if( ( t1 == String ) && ( t2 == Float ) ) return true;
+  if( ( t1 == String ) && ( t2 == String ) ) return true;
+  
+  // errors can be compared too ...
+  if ((t1 == Error) && (t2 == Error)) return true;
+  
+  return false;
+}
+
+// compare values. looks strange in order to be compatible with Excel
+int Value::compare( const Value& v ) const 
+{
+  Value::Type t1 = d->type;
+  Value::Type t2 = v.type();
+  
+  // errors always less than everything else
+  if( ( t1 == Error ) && ( t2 != Error ) )
+    return -1;
+  if( ( t2 == Error ) && ( t1 != Error ) )
+    return 1;
+    
+  // comparing errors only yields 0 if they are the same  
+  if( ( t1 == Error ) && ( t2 == Error ) )
+    return errorMessage() != v.errorMessage();
+  
+  // empty == empty
+  if( ( t1 == Empty ) && ( t2 == Empty ) )
+    return 0;
+  
+  // empty value is always less than string
+  // (except when the string is empty)
+  if( ( t1 == Empty ) && ( t2 == String ) )
+    return( v.asString().isEmpty() ) ? 0 : -1;
+    
+  // boolean vs boolean
+  if( ( t1 == Boolean ) && ( t2 == Boolean ) )
+  {
+    bool p = asBoolean();
+    bool q = v.asBoolean();
+    if( p ) return q ? 0 : 1;
+    else return q ? -1 : 0;
+  }
+  
+  // boolean is always greater than integer
+  if( ( t1 == Boolean ) && ( t2 == Integer ) )
+    return 1;
+  
+  // boolean is always greater than float
+  if( ( t1 == Boolean ) && ( t2 == Float ) )
+    return 1;
+  
+  // boolean is always greater than string
+  if( ( t1 == Boolean ) && ( t2 == String ) )
+    return 1;
+  
+  // integer is always less than boolean
+  if( ( t1 == Integer ) && ( t2 == Boolean ) )
+    return -1;
+    
+  // integer vs integer
+  if( ( t1 == Integer ) && ( t2 == Integer ) )
+  {
+    long p = asInteger();
+    long q = v.asInteger();
+    return ( p == q ) ? 0 : ( p < q ) ? -1 : 1;
+  }  
+  
+  // integer vs float
+  if( ( t1 == Integer ) && ( t2 == Float ) )
+    return compare( asFloat(), v.asFloat() );
+  
+  // integer is always less than string
+  if( ( t1 == Integer ) && ( t2 == String ) )
+    return -1;
+  
+  // float is always less than boolean
+  if( ( t1 == Float ) && ( t2 == Boolean ) )
+    return -1;
+  
+  // float vs integer
+  if( ( t1 == Float ) && ( t2 == Integer ) )
+    return compare( asFloat(), v.asFloat() );
+  
+  // float vs float
+  if( ( t1 == Float ) && ( t2 == Float ) )
+    return compare( asFloat(), v.asFloat() );
+  
+  // float is always less than string
+  if( ( t1 == Float ) && ( t2 == String ) )
+    return -1;
+
+  // string is always greater than empty value
+  // (except when the string is empty)
+  if( ( t1 == String ) && ( t2 == Empty ) )
+    return( asString().isEmpty() ) ? 0 : 1;
+  
+  // string is always less than boolean
+  if( ( t1 == String ) && ( t2 == Boolean ) )
+    return -1;
+  
+  // string is always greater than integer
+  if( ( t1 == String ) && ( t2 == Integer ) )
+    return 1;
+    
+  // string is always greater than float
+  if( ( t1 == String ) && ( t2 == Float ) )
+    return 1;
+
+  // The-Real-String comparison
+  if( ( t1 == String ) && ( t2 == String ) )
+    return asString().compare( v.asString() );
+
+  // Undefined, actually allowComparison would return false
+  return 0;
+}
+
+bool Value::equal( const Value& v ) const
+{
+  if (!allowComparison (v)) return false;
+  return compare( v ) == 0;
+}
+
+bool Value::less( const Value& v ) const
+{
+  if (!allowComparison (v)) return false;
+  return compare( v ) < 0;
+}
+
+bool Value::greater( const Value& v ) const
+{
+  if (!allowComparison (v)) return false;
+  return compare( v ) > 0;
+}
+
+TQTextStream& operator<<( TQTextStream& ts, Value::Type type ) 
+{
+  switch( type )
+  {
+    case Value::Empty:   ts << "Empty"; break;
+    case Value::Boolean: ts << "Boolean"; break;
+    case Value::Integer: ts << "Integer"; break;
+    case Value::Float:   ts << "Float"; break;
+    case Value::String:  ts << "String"; break;
+    case Value::Array:   ts << "Array"; break;
+    case Value::Error:   ts << "Error"; break;
+    default: ts << "Unknown!"; break;
+  };
+  return ts;
+}
+
+TQTextStream& operator<<( TQTextStream& ts, Value value ) 
+{
+  ts << value.type();
+  switch( value.type() )
+  {
+    case Value::Empty:   break;
+    
+    case Value::Boolean: 
+      ts << ": "; 
+      if (value.asBoolean()) ts << "TRUE"; 
+      else ts << "FALSE"; break;
+      
+    case Value::Integer: 
+      ts << ": " << value.asInteger(); break;
+      
+    case Value::Float:   
+      ts << ": " << value.asFloat(); break;
+      
+    case Value::String:  
+      ts << ": " << value.asString(); break;
+      
+    case Value::Error: 
+      ts << "(" << value.errorMessage() << ")"; break;
+    
+    default: break;
+  }
+  return ts;
+}