Class MeasureUnitImpl.UnitsParser

java.lang.Object

com.ibm.icu.impl.units.MeasureUnitImpl.UnitsParser

Enclosing class:

MeasureUnitImpl

public static class MeasureUnitImpl.UnitsParser
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	MeasureUnitImpl.UnitsParser.SingleUnitOrConstant	Contains a single unit or a constant.
(package private) static class	MeasureUnitImpl.UnitsParser.Token
(package private) static enum	MeasureUnitImpl.UnitsParser.TokenState	Token states definitions.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	fAfterPer
private int	fIndex
private boolean	fJustAfterPer
private boolean	fSawAnd
private String	fSource
private static MeasureUnit.MeasurePrefix[]	measurePrefixValues
private static CharsTrie	savedTrie
private final CharsTrie	trie

Constructor Summary

Constructors

Modifier	Constructor	Description
private	UnitsParser(String identifier)

Method Summary

Modifier and Type	Method	Description
private static MeasureUnit.MeasurePrefix	getPrefixFromTrieIndex(int trieIndex)
private static int	getTrieIndexForPrefix(MeasureUnit.MeasurePrefix prefix)
private boolean	hasNext()
private MeasureUnitImpl.UnitsParser.SingleUnitOrConstant	nextSingleUnit()	Returns the next "single unit" via result.
private MeasureUnitImpl.UnitsParser.Token	nextToken()
private MeasureUnitImpl	parse()
static MeasureUnitImpl	parseForIdentifier(String identifier)	Construct a MeasureUnit from a CLDR Unit Identifier, defined in UTS 35.
private void	processAlias(MeasureUnitImpl.UnitsParser.Token token)	Helper function to process alias replacement.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

savedTrie

private static volatile CharsTrie savedTrie

trie

private final CharsTrie trie

fSource

private String fSource

fIndex

private int fIndex

fAfterPer

private boolean fAfterPer

fJustAfterPer

private boolean fJustAfterPer

fSawAnd

private boolean fSawAnd

measurePrefixValues

private static MeasureUnit.MeasurePrefix[] measurePrefixValues

Constructor Details

UnitsParser

private UnitsParser(String identifier)

Method Details

parseForIdentifier

public static MeasureUnitImpl parseForIdentifier(String identifier)

Construct a MeasureUnit from a CLDR Unit Identifier, defined in UTS 35. Validates and canonicalizes the identifier.

Returns:

MeasureUnitImpl object or null if the identifier is empty.

Throws:

IllegalArgumentException - in case of invalid identifier.

getPrefixFromTrieIndex

private static MeasureUnit.MeasurePrefix getPrefixFromTrieIndex(int trieIndex)

getTrieIndexForPrefix

private static int getTrieIndexForPrefix(MeasureUnit.MeasurePrefix prefix)

parse

private MeasureUnitImpl parse()

nextSingleUnit

private MeasureUnitImpl.UnitsParser.SingleUnitOrConstant nextSingleUnit()

Returns the next "single unit" via result.

If a "-per-" was parsed, the result will have appropriate negative dimensionality.

Throws:

IllegalArgumentException - if we parse both compound units and "-and-", since mixed compound units are not yet supported - TODO(CLDR-13701).

hasNext

private boolean hasNext()

nextToken

private MeasureUnitImpl.UnitsParser.Token nextToken()

processAlias

private void processAlias(MeasureUnitImpl.UnitsParser.Token token)

Helper function to process alias replacement.

Parameters:

token - The token of TYPE_ALIAS to process