polyglot.util
Class TypeEncoder

java.lang.Object
  polyglot.util.TypeEncoder

public class TypeEncoder
extends java.lang.Object

The TypeEncoder gives the ability to encode a polyglot Type as a Java string.

It uses a form of serialization to encode the Type into a byte stream and then converts the byte stream to a standard Java string.

The difference between the encoder and a normal serialization process is that in order to encode this type, we need to sever any links to other types in the current environment. So any ClassType other than the the type being encoded is replaced in the stream with a PlaceHolder that contains the name of the class. To aid in the decoding process, placeholders for member classes user their "mangled" name; non-member classes use their fully qualified name.

Field Summary

protected boolean	base64
protected boolean	test
protected TypeSystem	ts
protected boolean	zip

Constructor Summary

TypeEncoder(TypeSystem ts)

Method Summary

Type	decode(java.lang.String s)
java.lang.String	encode(Type t)

Methods inherited from class java.lang.Object

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

Field Detail

ts

protected TypeSystem ts

zip

protected final boolean zip

See Also:

Constant Field Values

base64

protected final boolean base64

See Also:

Constant Field Values

test

protected final boolean test

See Also:

Constant Field Values

Constructor Detail

TypeEncoder

public TypeEncoder(TypeSystem ts)

Method Detail

encode

public java.lang.String encode(Type t)
                        throws java.io.IOException

Throws:

java.io.IOException

decode

public Type decode(java.lang.String s)
            throws java.io.InvalidClassException

Throws:

java.io.InvalidClassException