Class IntRange
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractList<java.lang.Integer>
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- groovy.lang.IntRange
 
 
 
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- All Implemented Interfaces:
- Range<java.lang.Integer>,- java.lang.Iterable<java.lang.Integer>,- java.util.Collection<java.lang.Integer>,- java.util.List<java.lang.Integer>
 
 public class IntRange extends java.util.AbstractList<java.lang.Integer> implements Range<java.lang.Integer> Represents a list of Integer objects starting at a specifiedfromvalue up (or down) to and potentially including a giventovalue.Instances of this class may be either inclusive aware or non-inclusive aware. See the relevant constructors for creating each type. Inclusive aware IntRange instances are suitable for use with Groovy's range indexing - in particular if the from or to values might be negative. This normally happens underneath the covers but is worth keeping in mind if creating these ranges yourself explicitly. Note: the design of this class might seem a little strange at first. It contains a Boolean field, inclusive, which can betrue,falseornull. This design is for backwards compatibility reasons. Groovy uses this class under the covers to represent range indexing, e.g.someList[x..y]andsomeString[x..<y]. In early versions of Groovy the ranges in these expressions were represented under the covers by thenew IntRange(x, y)andnew IntRange(x, y-1). This turns out to be a lossy abstraction when x and/or y are negative values. Now the latter case is represented bynew IntRange(false, x, y).Note: This class is a copy of ObjectRangeoptimized forint. If you make any changes to this class, you might consider making parallel changes toObjectRange.
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Constructor SummaryConstructors Modifier Constructor Description IntRange(boolean inclusive, int from, int to)Creates a new inclusive awareIntRange.IntRange(int from, int to)Creates a new non-inclusive awareIntRange.protectedIntRange(int from, int to, boolean reverse)Creates a new non-inclusive awareIntRange.
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Method SummaryAll Methods Instance Methods Concrete Methods Modifier and Type Method Description <T extends java.lang.Number & java.lang.Comparable>
 NumberRangeby(T stepSize)Creates a new NumberRange with the samefromandtoas this IntRange but with a step size ofstepSize.booleancontains(java.lang.Object value)booleancontainsAll(java.util.Collection other)booleancontainsWithinBounds(java.lang.Object o)Indicates whether an object is greater than or equal to thefromvalue for the range and less than or equal to thetovalue.booleanequals(IntRange that)booleanequals(java.lang.Object that)Determines if this object is equal to another object.java.lang.Integerget(int index)java.lang.IntegergetFrom()The lower value in the range.intgetFromInt()Gets the 'from' value as a primitive integer.java.lang.BooleangetInclusive()Returns the inclusive flag.java.lang.IntegergetTo()The upper value in the range.intgetToInt()Gets the 'to' value as a primitive integer.inthashCode()java.lang.Stringinspect()booleanisReverse()Indicates whether this is a reverse range which iterates backwards starting from the to value and ending on the from valuejava.util.Iterator<java.lang.Integer>iterator()intsize()java.util.List<java.lang.Integer>step(int step)Forms a list by stepping through the range by the indicated interval.voidstep(int step, Closure closure)Steps through the range, calling a closure for each item.java.util.List<java.lang.Integer>subList(int fromIndex, int toIndex)RangeInfosubListBorders(int size)A method for determining from and to information when using this IntRange to index an aggregate object of the specified size.java.lang.StringtoString()- 
Methods inherited from class java.util.AbstractListadd, add, addAll, clear, indexOf, lastIndexOf, listIterator, listIterator, remove, removeRange, set
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Methods inherited from class java.util.AbstractCollectionaddAll, isEmpty, remove, removeAll, retainAll, toArray, toArray
 
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Constructor Detail- 
IntRangepublic IntRange(int from, int to)Creates a new non-inclusive awareIntRange. Iffromis greater thanto, a reverse range is created withfromandtoswapped.- Parameters:
- from- the first number in the range.
- to- the last number in the range.
- Throws:
- java.lang.IllegalArgumentException- if the range would contain more than- Integer.MAX_VALUEvalues.
 
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IntRangeprotected IntRange(int from, int to, boolean reverse)Creates a new non-inclusive awareIntRange.- Parameters:
- from- the first value in the range.
- to- the last value in the range.
- reverse-- trueif the range should count from- toto- from.
- Throws:
- java.lang.IllegalArgumentException- if- fromis greater than- to.
 
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IntRangepublic IntRange(boolean inclusive, int from, int to)Creates a new inclusive awareIntRange.- Parameters:
- from- the first value in the range.
- to- the last value in the range.
- inclusive-- trueif the to value is included in the range.
 
 
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Method Detail- 
bypublic <T extends java.lang.Number & java.lang.Comparable> NumberRange by(T stepSize) Creates a new NumberRange with the samefromandtoas this IntRange but with a step size ofstepSize.- Parameters:
- stepSize- the desired step size
- Returns:
- a new NumberRange
- Since:
- 2.5.0
 
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subListBorderspublic RangeInfo subListBorders(int size) A method for determining from and to information when using this IntRange to index an aggregate object of the specified size. Normally only used internally within Groovy but useful if adding range indexing support for your own aggregates.- Parameters:
- size- the size of the aggregate being indexed
- Returns:
- the calculated range information (with 1 added to the to value, ready for providing to subList
 
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equalspublic boolean equals(java.lang.Object that) Determines if this object is equal to another object. Delegates toAbstractList.equals(Object)ifthatis anything other than anIntRange.It is not necessary to override hashCode, asAbstractList.hashCode()provides a suitable hash code.Note that equals is generally handled by DefaultGroovyMethods.equals(List, List)instead of this method.- Specified by:
- equalsin interface- java.util.Collection<java.lang.Integer>
- Specified by:
- equalsin interface- java.util.List<java.lang.Integer>
- Overrides:
- equalsin class- java.util.AbstractList<java.lang.Integer>
- Parameters:
- that- the object to compare
- Returns:
- trueif the objects are equal
 
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equalspublic boolean equals(IntRange that) - Parameters:
- that- the object to compare for equality
- Returns:
- trueif the ranges are equal
 
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getFrompublic java.lang.Integer getFrom() Description copied from interface:RangeThe lower value in the range.
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getTopublic java.lang.Integer getTo() Description copied from interface:RangeThe upper value in the range.
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getInclusivepublic java.lang.Boolean getInclusive() Returns the inclusive flag. Null for non-inclusive aware ranges or non-null for inclusive aware ranges.
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getFromIntpublic int getFromInt() Gets the 'from' value as a primitive integer.- Returns:
- the 'from' value as a primitive integer.
 
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getToIntpublic int getToInt() Gets the 'to' value as a primitive integer.- Returns:
- the 'to' value as a primitive integer.
 
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isReversepublic boolean isReverse() Description copied from interface:RangeIndicates whether this is a reverse range which iterates backwards starting from the to value and ending on the from value
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containsWithinBoundspublic boolean containsWithinBounds(java.lang.Object o) Description copied from interface:RangeIndicates whether an object is greater than or equal to thefromvalue for the range and less than or equal to thetovalue.This may be true even for values not contained in the range. Example: from = 1.5, to = 3, next() increments by 1 containsWithinBounds(2) == true contains(2) == false - Specified by:
- containsWithinBoundsin interface- Range<java.lang.Integer>
- Parameters:
- o- the object to check against the boundaries of the range
- Returns:
- trueif the object is between the from and to values
 
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getpublic java.lang.Integer get(int index) - Specified by:
- getin interface- java.util.List<java.lang.Integer>
- Specified by:
- getin class- java.util.AbstractList<java.lang.Integer>
 
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sizepublic int size() - Specified by:
- sizein interface- java.util.Collection<java.lang.Integer>
- Specified by:
- sizein interface- java.util.List<java.lang.Integer>
- Specified by:
- sizein class- java.util.AbstractCollection<java.lang.Integer>
 
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iteratorpublic java.util.Iterator<java.lang.Integer> iterator() - Specified by:
- iteratorin interface- java.util.Collection<java.lang.Integer>
- Specified by:
- iteratorin interface- java.lang.Iterable<java.lang.Integer>
- Specified by:
- iteratorin interface- java.util.List<java.lang.Integer>
- Overrides:
- iteratorin class- java.util.AbstractList<java.lang.Integer>
 
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subListpublic java.util.List<java.lang.Integer> subList(int fromIndex, int toIndex)- Specified by:
- subListin interface- java.util.List<java.lang.Integer>
- Overrides:
- subListin class- java.util.AbstractList<java.lang.Integer>
 
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toStringpublic java.lang.String toString() - Overrides:
- toStringin class- java.util.AbstractCollection<java.lang.Integer>
 
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inspectpublic java.lang.String inspect() 
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containspublic boolean contains(java.lang.Object value) - Specified by:
- containsin interface- java.util.Collection<java.lang.Integer>
- Specified by:
- containsin interface- java.util.List<java.lang.Integer>
- Overrides:
- containsin class- java.util.AbstractCollection<java.lang.Integer>
 
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containsAllpublic boolean containsAll(java.util.Collection other) - Specified by:
- containsAllin interface- java.util.Collection<java.lang.Integer>
- Specified by:
- containsAllin interface- java.util.List<java.lang.Integer>
- Overrides:
- containsAllin class- java.util.AbstractCollection<java.lang.Integer>
 
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steppublic void step(int step, Closure closure)Description copied from interface:RangeSteps through the range, calling a closure for each item.
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steppublic java.util.List<java.lang.Integer> step(int step) Description copied from interface:RangeForms a list by stepping through the range by the indicated interval.
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hashCodepublic int hashCode() - Specified by:
- hashCodein interface- java.util.Collection<java.lang.Integer>
- Specified by:
- hashCodein interface- java.util.List<java.lang.Integer>
- Overrides:
- hashCodein class- java.util.AbstractList<java.lang.Integer>
 
 
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