io.parsingdata.metal.token

Class Def

java.lang.Object

io.parsingdata.metal.token.Token

io.parsingdata.metal.token.Def

public class Def
extends Token

A Token that specifies a value to parse in the input.

A Def consists of a size (a ValueExpression.

Parsing will succeed if size evaluates to a single value and if that many bytes are available in the input. This means that a size of zero will lead to a successful parse, but will not produce a value.

See Also:

ValueExpression

Field Summary

Fields

Modifier and Type	Field and Description
ValueExpression	size

Fields inherited from class io.parsingdata.metal.token.Token

EMPTY_NAME, encoding, name, NO_NAME, SEPARATOR

Constructor Summary

Constructors

Constructor and Description
Def(String name, ValueExpression size, Encoding encoding)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
int	hashCode()
protected Optional<ParseState>	parseImpl(Environment environment)
String	toString()

Methods inherited from class io.parsingdata.metal.token.Token

getCanonical, isLocal, makeNameFragment, parse

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

size

public final ValueExpression size

Constructor Detail

Def

public Def(String name,
           ValueExpression size,
           Encoding encoding)

Method Detail

parseImpl

protected Optional<ParseState> parseImpl(Environment environment)

Specified by:

parseImpl in class Token

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Token

hashCode

public int hashCode()

Overrides:

hashCode in class Token