proguard.classfile.attribute.signature.parsing

Class LazyParser<T>

java.lang.Object

proguard.classfile.attribute.signature.parsing.LazyParser<T>

Type Parameters:

T - The return type of the parser.

All Implemented Interfaces:

Parser<T>

public final class LazyParser<T>
extends java.lang.Object
implements Parser<T>

Lazily initialized parser. Used to avoid problems with recursive definitions of grammar.

Constructor Summary

Constructors

Constructor and Description
LazyParser()

Method Summary

Modifier and Type	Method and Description
T	parse(ParserContext context) The core of the parsing logic.
void	setDelegate(Parser<T> delegate) Configure with the parser that all calls will be forwarded to.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface proguard.classfile.attribute.signature.parsing.Parser

map, parse

Constructor Detail

LazyParser

public LazyParser()

Method Detail

setDelegate

public void setDelegate(Parser<T> delegate)

Configure with the parser that all calls will be forwarded to.

parse

@Nullable
public T parse(ParserContext context)

Description copied from interface: Parser

The core of the parsing logic. The context argument specifies where in the input string we are currently parsing. The responsibility of this function is to do one of:

• Consume a part of the input and return a non-null value.
• Return null and keep the input context untouched. This can be achieved either by avoiding the calls to ParserContext.advance(int), or through the use of snapshotting (see ParserContext.snapshot()).

Specified by:

parse in interface Parser<T>

Parameters:

context - Context of the parser containing the parsed string and the position in that string.

Returns:

Null-value if this parser did not match anything. Non-null if it matched.