org.graalvm.shadowed.com.ibm.icu.impl.number.parse

Class SymbolMatcher

java.lang.Object

org.graalvm.shadowed.com.ibm.icu.impl.number.parse.SymbolMatcher

All Implemented Interfaces:

NumberParseMatcher

Direct Known Subclasses:

IgnorablesMatcher, InfinityMatcher, MinusSignMatcher, NanMatcher, PaddingMatcher, PercentMatcher, PermilleMatcher, PlusSignMatcher

public abstract class SymbolMatcher
extends Object
implements NumberParseMatcher

A base class for many matchers that performs a simple match against a UnicodeString and/or UnicodeSet.

Nested Class Summary

Nested classes/interfaces inherited from interface org.graalvm.shadowed.com.ibm.icu.impl.number.parse.NumberParseMatcher

NumberParseMatcher.Flexible

Field Summary

Fields

Modifier and Type	Field and Description
protected String	string
protected UnicodeSet	uniSet

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SymbolMatcher(StaticUnicodeSets.Key key)
protected	SymbolMatcher(String symbolString, UnicodeSet symbolUniSet)

Method Summary

Modifier and Type	Method and Description
protected abstract void	accept(StringSegment segment, ParsedNumber result)
UnicodeSet	getSet()
protected abstract boolean	isDisabled(ParsedNumber result)
boolean	match(StringSegment segment, ParsedNumber result) Runs this matcher starting at the beginning of the given StringSegment.
void	postProcess(ParsedNumber result) Method called at the end of a parse, after all matchers have failed to consume any more chars.
boolean	smokeTest(StringSegment segment) Performs a fast "smoke check" for whether or not this matcher could possibly match against the given string segment.

Methods inherited from class java.lang.Object

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

Field Detail

string

protected final String string

uniSet

protected final UnicodeSet uniSet

Constructor Detail

SymbolMatcher

protected SymbolMatcher(String symbolString,
                        UnicodeSet symbolUniSet)

SymbolMatcher

protected SymbolMatcher(StaticUnicodeSets.Key key)

Method Detail

getSet

public UnicodeSet getSet()

match

public boolean match(StringSegment segment,
                     ParsedNumber result)

Description copied from interface: NumberParseMatcher

Runs this matcher starting at the beginning of the given StringSegment. If this matcher finds something interesting in the StringSegment, it should update the offset of the StringSegment corresponding to how many chars were matched.

Specified by:

match in interface NumberParseMatcher

Parameters:

segment - The StringSegment to match against. Matches always start at the beginning of the segment. The segment is guaranteed to contain at least one char.

result - The data structure to store results if the match succeeds.

Returns:

Whether this matcher thinks there may be more interesting chars beyond the end of the string segment.

smokeTest

public boolean smokeTest(StringSegment segment)

Description copied from interface: NumberParseMatcher

Performs a fast "smoke check" for whether or not this matcher could possibly match against the given string segment. The test should be as fast as possible but also as restrictive as possible. For example, matchers can maintain a UnicodeSet of all code points that count possibly start a match. Matchers should use the StringSegment.startsWith(int) method in order to correctly handle case folding.

Specified by:

smokeTest in interface NumberParseMatcher

Parameters:

segment - The segment to check against.

Returns:

true if the matcher might be able to match against this segment; false if it definitely will not be able to match.

postProcess

public void postProcess(ParsedNumber result)

Description copied from interface: NumberParseMatcher

Method called at the end of a parse, after all matchers have failed to consume any more chars. Allows a matcher to make final modifications to the result given the knowledge that no more matches are possible.

Specified by:

postProcess in interface NumberParseMatcher

Parameters:

result - The data structure to store results.

isDisabled

protected abstract boolean isDisabled(ParsedNumber result)

accept

protected abstract void accept(StringSegment segment,
                               ParsedNumber result)