Module swim.structure

Package swim.structure

Class Extant

java.lang.Object

swim.structure.Item

swim.structure.Value

swim.structure.Extant

All Implemented Interfaces:

Comparable<Item>, Iterable<Item>, Debug, Display

public final class Extant
extends Value

Method Summary

Modifier and Type	Method	Description
boolean	booleanValue()	Always returns true because Extant behaves like a truthy value.
boolean	booleanValue(boolean orElse)	Always returns true because Extant behaves like a truthy value.
int	compareTo(Item other)
<T> Output<T>	debug(Output<T> output)	Writes a developer readable, debug-formatted string representation of this object to output.
boolean	equals(Object other)
static Extant	extant()
int	hashCode()
boolean	isConstant()	Returns true if this Item always evaluates to the same Item.
boolean	isDefined()	Always returns true because Extant is a defined value.
boolean	isDefinite()	Always returns false because Extant is not a definite value.
boolean	isDistinct()	Always returns false because Extant is not a distinct value.
Value	not()
String	stringValue()	Always returns the empty String because Extant behaves like an empty Record, which converts to a String by concatenating the string values of all its members, if all its members convert to string values.
String	stringValue(String orElse)	Always returns the empty String because Extant behaves like an empty Record, which converts to a String by concatenating the string values of all its members, if all its members convert to string values.
int	typeOrder()	Returns the heterogeneous sort order of this Item.
Record	unflattened()	Always returns an empty Record because Extant is not a distinct value.

Methods inherited from class swim.structure.Value

absent, alias, and, and, bitwiseAnd, bitwiseAnd, bitwiseNot, bitwiseOr, bitwiseOr, bitwiseXor, bitwiseXor, body, branch, builder, byteValue, byteValue, charValue, charValue, commit, conditional, conditional, contains, containsKey, containsKey, containsValue, divide, divide, doubleValue, doubleValue, empty, eq, eq, flattened, floatValue, floatValue, fromObject, ge, ge, get, get, getAttr, getAttr, getField, getField, getItem, getSlot, getSlot, gt, gt, head, header, headers, integerValue, integerValue, intValue, intValue, inverse, isAliased, isMutable, key, keyEquals, lambda, le, le, length, longValue, longValue, lt, lt, minus, minus, modulo, modulo, ne, ne, negative, numberValue, numberValue, or, or, plus, plus, positive, removed, removed, shortValue, shortValue, tag, tail, target, times, times, toValue

Methods inherited from class swim.structure.Item

appended, appended, appended, appended, appended, appended, appended, appended, cast, cast, coerce, coerce, concat, display, evaluate, evaluate, filter, filter, globalScope, invoke, iterator, max, min, precedence, prepended, prepended, prepended, prepended, prepended, prepended, prepended, prepended, substitute, substitute, toString, updated, updated, updated, updated, updated, updated, updated, updated, updated, updated, updated, updated, updated, updated, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedAttr, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot, updatedSlot

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Details

isDefined

public boolean isDefined()

Always returns true because Extant is a defined value.

Overrides:

isDefined in class Value

isDistinct

public boolean isDistinct()

Always returns false because Extant is not a distinct value.

Overrides:

isDistinct in class Value

isDefinite

public boolean isDefinite()

Always returns false because Extant is not a definite value.

Overrides:

isDefinite in class Value

isConstant

public boolean isConstant()

Description copied from class: Item

Returns true if this Item always evaluates to the same Item.

Specified by:

isConstant in class Item

unflattened

public Record unflattened()

Always returns an empty Record because Extant is not a distinct value.

Overrides:

unflattened in class Value

not

public Value not()

Overrides:

not in class Value

stringValue

public String stringValue()

Always returns the empty String because Extant behaves like an empty Record, which converts to a String by concatenating the string values of all its members, if all its members convert to string values.

Overrides:

stringValue in class Value

stringValue

public String stringValue(String orElse)

Always returns the empty String because Extant behaves like an empty Record, which converts to a String by concatenating the string values of all its members, if all its members convert to string values.

Overrides:

stringValue in class Value

booleanValue

public boolean booleanValue()

Always returns true because Extant behaves like a truthy value.

Overrides:

booleanValue in class Value

booleanValue

public boolean booleanValue(boolean orElse)

Always returns true because Extant behaves like a truthy value.

Overrides:

booleanValue in class Value

typeOrder

public int typeOrder()

Description copied from class: Item

Returns the heterogeneous sort order of this Item. Used to impose a total order on the set of all items. When comparing two items of different types, the items order according to their typeOrder.

Specified by:

typeOrder in class Item

compareTo

public int compareTo(Item other)

Specified by:

compareTo in interface Comparable<Item>

Specified by:

compareTo in class Item

equals

public boolean equals(Object other)

Specified by:

equals in class Item

hashCode

public int hashCode()

Specified by:

hashCode in class Item

debug

public <T> Output<T> debug(Output<T> output)

Description copied from interface: Debug

Writes a developer readable, debug-formatted string representation of this object to output.

Specified by:

debug in interface Debug

Specified by:

debug in class Item

Returns:

the continuation of the output.

extant

public static Extant extant()