com.github.fge.grappa.helpers

Interface ValueBuilder<T>

Type Parameters:

T - type of the value produced

public interface ValueBuilder<T>

A value builder for use in a parser

Note that all setters should return a boolean, since the primary use of this interface is within rules. If the grammar rules are not enough for validation, you may make the setter return false to signal a parsing error.

This is also the base interface used by ListeningParser to post events.

See Also:

ListeningParser.post(ValueBuilder)

Method Summary

Methods

Modifier and Type	Method and Description
T	build() Build the value
boolean	reset() Reset this builder

Method Detail

build

@Nonnull
T build()

Build the value

Returns:

the built value

reset

boolean reset()

Reset this builder

This method is called by ListeningParser.post(ValueBuilder) after the value has been built. Since it always returns true, you may also use it as an action in a parser.

It is the responsibility of the implementations to ensure that the builder is reset to a state so that it is ready to be used again.

Returns:

always true