io.parsingdata.metal.token

Class Tie

java.lang.Object

io.parsingdata.metal.token.Token

io.parsingdata.metal.token.Tie

public class Tie
extends Token

A Token that specifies a token to be parsed inside the result of a provided ValueExpression.

A Tie consists of a token (a Token) and a dataExpression (a ValueExpression). First dataExpression is evaluated. Then each value is used as an input to parse the token in. Tie succeeds if all parses of token in all results succeed. Tie fails if dataExpression evaluates to a list of values that is either empty or contains an invalid value.

See Also:

ValueExpression

Field Summary

Fields

Modifier and Type	Field and Description
ValueExpression	dataExpression
Token	token

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

EMPTY_NAME, encoding, name, NO_NAME, SEPARATOR

Constructor Summary

Constructors

Constructor and Description
Tie(String name, Token token, ValueExpression dataExpression, 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

token

public final Token token

dataExpression

public final ValueExpression dataExpression

Constructor Detail

Tie

public Tie(String name,
           Token token,
           ValueExpression dataExpression,
           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