Package eu.bandm.tools.lexic

Interface CodePointSource

All Superinterfaces:

IntSupplier

All Known Implementing Classes:

LocationCodePointSource

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CodePointSource
extends IntSupplier

A specialized supplier of unicode code points.

For objects that implement this interface, the method getAsInt() is expected to return only valid Unicode code points or -1. Exceptions must be documented explicitly.

See Also:

• Character.isValidCodePoint(int)

Method Summary

Modifier and Type	Method	Description
int	getAsInt()	Returns the next code point if available.
static CodePointSource	read(Reader reader, @Opt Consumer<? super IOException> handler)	Returns a supplier that produces the code points corresponding to the UTF-8 characters available from a given reader.
static CodePointSource	read(String text)	Returns a supplier that produces the code points of a given string.

Method Details

getAsInt

int getAsInt()

Returns the next code point if available.

Specified by:

getAsInt in interface IntSupplier

Returns:

either a valid Unicode code point, or -1 to indicate that the end of the stream has been reached

See Also:

• Character.isValidCodePoint(int)

read

static CodePointSource read(Reader reader,
 @Opt
 @Opt Consumer<? super IOException> handler)

Returns a supplier that produces the code points corresponding to the UTF-8 characters available from a given reader.

A stream of code points can be obtained by repeated calls to the method getAsInt(). If the stream is not yet exhausted, then the return value is a valid Unicode code points. The end of the stream is signalled by a special return value of -1. Further calls then also return -1 indefinitely. The reader is not closed implicitly in any case.

I/O exceptions are caught and signaled by calling back to the given handler. Catching an I/O exception terminates the stream of code points, regardless whether and how the exception is handled.

Parameters:

reader - the reader to pull characters from

handler - the handler for caught I/O exceptions

Returns:

a supplier that produces the code points corresponding to the UTF-16 characters available from a given reader

See Also:

• Character.isValidCodePoint(int)

read

static CodePointSource read(String text)

Returns a supplier that produces the code points of a given string.

Parameters:

text - the string to convert to code points

Returns:

a supplier that produces the code points of a given string, and signals no exceptions