fr.umlv.tatoo.runtime.lexer
Interface SimpleLexer

All Known Implementing Classes:

Lexer, Lexer.LexerImpl

public interface SimpleLexer

A simple interface that can be used to manipulate a lexer after its creation. To use the lexer in pull mode, one will use the method run(), in that case the underlying buffer used must implements the optional operation LexerBuffer.read(). To use the lexer in push mode, on will use step() to proceed all available characters of the buffer and close() when the whole text has been read.

Author:

Remi

See Also:

Lexer

Method Summary

void	close() Closes the lexing process.
void	run() Does all the lexing in one shot.
void	step() Proceed all available characters from the underlying buffer.

Method Detail

step

void step()

Proceed all available characters from the underlying buffer. In order to end the lexing, after several calls to step() the developer must call close().

See Also:

close(), LexerBuffer.hasRemaining()

run

void run()

Does all the lexing in one shot.

Throws:

UnsupportedOperationException - if the optional operation LexerBuffer.read() is not supported by the underlying buffer.

close

void close()

Closes the lexing process. This method must be called after some calls to step(). Note that this method is likely to recognize some supplementary tokens and thus to call LexerListener.ruleVerified(Object, int, Object). during the lexing process, by example, if the lexer states doesn't accept the end of file.

See Also:

step()