com.android.dx.cf.direct
Class AttributeFactory

java.lang.Object
  com.android.dx.cf.direct.AttributeFactory

Direct Known Subclasses:

StdAttributeFactory

public class AttributeFactory
extends Object

Factory capable of instantiating various Attribute subclasses depending on the context and name.

Field Summary

static int	CTX_CLASS context for attributes on class files
static int	CTX_CODE context for attributes on code attributes
static int	CTX_COUNT number of contexts
static int	CTX_FIELD context for attributes on fields
static int	CTX_METHOD context for attributes on methods

Constructor Summary

AttributeFactory()
Constructs an instance.

Method Summary

Attribute	parse(DirectClassFile cf, int context, int offset, ParseObserver observer) Parses and makes an attribute based on the bytes at the indicated position in the given array.
protected Attribute	parse0(DirectClassFile cf, int context, String name, int offset, int length, ParseObserver observer) Parses attribute content.

Methods inherited from class java.lang.Object

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

Field Detail

CTX_CLASS

public static final int CTX_CLASS

context for attributes on class files

See Also:

Constant Field Values

CTX_FIELD

public static final int CTX_FIELD

context for attributes on fields

See Also:

Constant Field Values

CTX_METHOD

public static final int CTX_METHOD

context for attributes on methods

See Also:

Constant Field Values

CTX_CODE

public static final int CTX_CODE

context for attributes on code attributes

See Also:

Constant Field Values

CTX_COUNT

public static final int CTX_COUNT

number of contexts

See Also:

Constant Field Values

Constructor Detail

AttributeFactory

public AttributeFactory()

Constructs an instance.

Method Detail

parse

public final Attribute parse(DirectClassFile cf,
                             int context,
                             int offset,
                             ParseObserver observer)

Parses and makes an attribute based on the bytes at the indicated position in the given array. This method figures out the name, and then does all the setup to call on to parse0(com.android.dx.cf.direct.DirectClassFile, int, java.lang.String, int, int, com.android.dx.cf.iface.ParseObserver), which does the actual construction.

Parameters:

cf - non-null; class file to parse from

context - context to parse in; one of the CTX_* constants

offset - offset into dcf's bytes to start parsing at

observer - null-ok; parse observer to report to, if any

Returns:

non-null; an appropriately-constructed Attribute

parse0

protected Attribute parse0(DirectClassFile cf,
                           int context,
                           String name,
                           int offset,
                           int length,
                           ParseObserver observer)

Parses attribute content. The base class implements this by constructing an instance of RawAttribute. Subclasses are expected to override this to do something better in most cases.

Parameters:

cf - non-null; class file to parse from

context - context to parse in; one of the CTX_* constants

name - non-null; the attribute name

offset - offset into bytes to start parsing at; this is the offset to the start of attribute data, not to the header

length - the length of the attribute data

observer - null-ok; parse observer to report to, if any

Returns:

non-null; an appropriately-constructed Attribute