Package com.android.dx.dex.code

Class ZeroSizeInsn

java.lang.Object

com.android.dx.dex.code.DalvInsn

com.android.dx.dex.code.ZeroSizeInsn

Direct Known Subclasses:

CodeAddress, LocalSnapshot, LocalStart

public abstract class ZeroSizeInsn
extends DalvInsn

Pseudo-instruction base class for zero-size (no code emitted) instructions, which are generally used for tracking metainformation about the code they are adjacent to.

Constructor Summary

Constructors

Constructor	Description
ZeroSizeInsn(SourcePosition position)	Constructs an instance.

Method Summary

Modifier and Type	Method	Description
final int	codeSize()	Gets the size of this instruction, in 16-bit code units.
final DalvInsn	withOpcode(Dop opcode)	Returns an instance that is just like this one, except that its opcode is replaced by the one given, and its address is reset.
DalvInsn	withRegisterOffset(int delta)	Returns an instance that is just like this one, except that all register references have been offset by the given delta, and its address is reset.
final void	writeTo(AnnotatedOutput out)	Writes this instance to the given output.

Methods inherited from class com.android.dx.dex.code.DalvInsn

argString, cstComment, cstString, expandedPrefix, expandedSuffix, expandedVersion, getAddress, getLowRegVersion, getMinimumRegisterRequirement, getNextAddress, getOpcode, getPosition, getRegisters, hasAddress, hasResult, identifierString, listingString, listingString0, makeMove, setAddress, toString, withMapper, withRegisters

Methods inherited from class java.lang.Object

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

Constructor Details

ZeroSizeInsn

public ZeroSizeInsn(SourcePosition position)

Constructs an instance. The output address of this instance is initially unknown (-1).

Parameters:

position - non-null; source position

Method Details

codeSize

public final int codeSize()

Gets the size of this instruction, in 16-bit code units.

Specified by:

codeSize in class DalvInsn

Returns:

>= 0; the code size of this instruction

writeTo

public final void writeTo(AnnotatedOutput out)

Writes this instance to the given output. This method should never annotate the output.

Specified by:

writeTo in class DalvInsn

Parameters:

out - non-null; where to write to

withOpcode

public final DalvInsn withOpcode(Dop opcode)

Returns an instance that is just like this one, except that its opcode is replaced by the one given, and its address is reset.

Specified by:

withOpcode in class DalvInsn

Parameters:

opcode - non-null; the new opcode

Returns:

non-null; an appropriately-constructed instance

withRegisterOffset

public DalvInsn withRegisterOffset(int delta)

Returns an instance that is just like this one, except that all register references have been offset by the given delta, and its address is reset.

Specified by:

withRegisterOffset in class DalvInsn

Parameters:

delta - the amount to offset register references by

Returns:

non-null; an appropriately-constructed instance