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/*
* Copyright (c) 2019 - Manifold Systems LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package manifold.collections.api.range;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* Defines binding functions to enable range expressions such as:
*
* {@code 5kg to 10kg}
*
* Mostly intended for use with {@code for} loops:
*
* for(int i: 1 to 10) {. . .}
* for(Length len: 10ft to 100ft step 6 unit inch) {. . .}
* for(var value: here to there) {. . .}
*
* and {@code if} statements:
*
* if (2 inside 1 to 5) {...}
*
* To use this class simply import the `to`, `step`, and other constants via:
*
*/
@SuppressWarnings("unused")
public final class RangeFun
{
public static final Closed to = Closed.instance(); // both endpoints included
public static final LeftOpen _to = LeftOpen.instance(); // left endpoint excluded
public static final RightOpen to_ = RightOpen.instance(); // right endpoint excluded
public static final Open _to_ = Open.instance(); // both endpoints excluded
public static final Step step = Step.instance(); // provides a `step` clause
public static final Unit unit = Unit.instance(); // provides a `unit` clause
public static final Inside inside = Inside.instance(); // test for range membership
public static final Outside outside = Outside.instance(); // negative test for range membership
/**
* For internal use.
*/
public static class Closed
{
private static final Closed INSTANCE = new Closed();
public static Closed instance()
{
return INSTANCE;
}
boolean _leftClosed;
boolean _rightClosed;
private Closed()
{
_leftClosed = true;
_rightClosed = true;
}
/** Comparable */
public > From_Comp postfixBind( E comparable )
{
return new From_Comp<>( comparable );
}
public class From_Comp>
{
private E _start;
From_Comp( E sequential )
{
_start = sequential;
}
public ComparableRange prefixBind( E end )
{
return new ComparableRange<>( _start, end, _leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** Sequential */
public , S, U> From_Seq postfixBind( E sequential )
{
return new From_Seq<>( sequential );
}
public class From_Seq, S, U>
{
private E _start;
From_Seq( E sequential )
{
_start = sequential;
}
public SequentialRange prefixBind( E end )
{
return new SequentialRange<>( _start, end, null, null, _leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** BigDecimal */
public From_BigDecimal postfixBind( BigDecimal bd )
{
return new From_BigDecimal( bd );
}
public class From_BigDecimal
{
private BigDecimal _start;
From_BigDecimal( BigDecimal sequential )
{
_start = sequential;
}
public BigDecimalRange prefixBind( BigDecimal end )
{
return new BigDecimalRange( _start, end, BigDecimal.ONE,
_leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** BigInteger */
public From_BigInteger postfixBind( BigInteger bd )
{
return new From_BigInteger( bd );
}
public class From_BigInteger
{
private BigInteger _start;
From_BigInteger( BigInteger sequential )
{
_start = sequential;
}
public BigIntegerRange prefixBind( BigInteger end )
{
return new BigIntegerRange( _start, end, BigInteger.ONE,
_leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** Double */
public From_Double postfixBind( Double bd )
{
return new From_Double( bd );
}
public class From_Double
{
private Double _start;
From_Double( Double sequential )
{
_start = sequential;
}
public DoubleRange prefixBind( Double end )
{
return new DoubleRange( _start, end, 1,
_leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** Long */
public From_Long postfixBind( Long bd )
{
return new From_Long( bd );
}
public class From_Long
{
private Long _start;
From_Long( Long sequential )
{
_start = sequential;
}
public LongRange prefixBind( Long end )
{
return new LongRange( _start, end, 1,
_leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
/** Integer */
public From_Integer postfixBind( Integer bd )
{
return new From_Integer( bd );
}
public class From_Integer
{
private Integer _start;
From_Integer( Integer sequential )
{
_start = sequential;
}
public IntegerRange prefixBind( Integer end )
{
return new IntegerRange( _start, end, 1,
_leftClosed, _rightClosed, _start.compareTo( end ) > 0 );
}
}
}
/**
* For internal use.
*/
public static class LeftOpen extends Closed
{
private static final LeftOpen INSTANCE = new LeftOpen();
public static LeftOpen instance()
{
return INSTANCE;
}
private LeftOpen()
{
_leftClosed = false;
}
}
/**
* For internal use.
*/
public static class RightOpen extends Closed
{
private static final RightOpen INSTANCE = new RightOpen();
public static RightOpen instance()
{
return INSTANCE;
}
private RightOpen()
{
_rightClosed = false;
}
}
/**
* For internal use.
*/
public static class Open extends Closed
{
private static final Open INSTANCE = new Open();
public static Open instance()
{
return INSTANCE;
}
private Open()
{
_leftClosed = false;
_rightClosed = false;
}
}
public static class Step
{
private static final Step INSTANCE = new Step();
public static Step instance()
{
return INSTANCE;
}
public , S, U, RANGE extends AbstractIterableRange> StepRange postfixBind( RANGE range )
{
return new StepRange<>( range );
}
public static class StepRange, S, U, RANGE extends AbstractIterableRange>
{
private final RANGE _range;
StepRange( RANGE range )
{
_range = range;
}
public RANGE prefixBind( S step )
{
return _range.step( step );
}
}
}
public static class Unit
{
private static final Unit INSTANCE = new Unit();
public static Unit instance()
{
return INSTANCE;
}
public , S, U, RANGE extends AbstractIterableRange> UnitRange postfixBind( RANGE range )
{
return new UnitRange<>( range );
}
public static class UnitRange, S, U, RANGE extends AbstractIterableRange>
{
private final RANGE _range;
UnitRange( RANGE range )
{
_range = range;
}
public RANGE prefixBind( U unit )
{
return _range.unit( unit );
}
}
}
public static class Inside
{
private static final Inside INSTANCE = new Inside();
public static Inside instance()
{
return INSTANCE;
}
public , RANGE extends AbstractRange> InsideRange prefixBind( RANGE range )
{
return new InsideRange<>( range );
}
public static class InsideRange, RANGE extends AbstractRange>
{
private final RANGE _range;
InsideRange( RANGE range )
{
_range = range;
}
public boolean postfixBind( E element )
{
return _range.contains( element );
}
}
}
public static class Outside
{
private static final Outside INSTANCE = new Outside();
public static Outside instance()
{
return INSTANCE;
}
public , RANGE extends AbstractRange> OutsideRange prefixBind( RANGE range )
{
return new OutsideRange<>( range );
}
public static class OutsideRange, RANGE extends AbstractRange>
{
private final RANGE _range;
OutsideRange( RANGE range )
{
_range = range;
}
public boolean postfixBind( E element )
{
return !_range.contains( element );
}
}
}
}
