com.android.dx.rop.code
Class PlainInsn

java.lang.Object
  com.android.dx.rop.code.Insn
      com.android.dx.rop.code.PlainInsn

All Implemented Interfaces:

ToHuman

public final class PlainInsn
extends Insn

Plain instruction, which has no embedded data and which cannot possibly throw an exception.

Nested Class Summary

Nested classes/interfaces inherited from class com.android.dx.rop.code.Insn

Insn.BaseVisitor, Insn.Visitor

Constructor Summary

PlainInsn(Rop opcode, SourcePosition position, RegisterSpec result, RegisterSpec source)
Constructs a single-source instance.

PlainInsn(Rop opcode, SourcePosition position, RegisterSpec result, RegisterSpecList sources)
Constructs an instance.

Method Summary

void	accept(Insn.Visitor visitor) Calls the appropriate method on the given visitor, depending on the class of this instance.
TypeList	getCatches() Gets the list of possibly-caught exceptions.
Insn	withAddedCatch(Type type) Returns an instance that is just like this one, except that it has a catch list with the given item appended to the end.
Insn	withNewRegisters(RegisterSpec result, RegisterSpecList sources) Returns an instance that is just like this one, except with new result and source registers.
Insn	withRegisterOffset(int delta) Returns an instance that is just like this one, except that all register references have been offset by the given delta.
Insn	withSourceLiteral() Returns an instance that is just like this one, except that, if possible, the insn is converted into a version in which a source (if it is a constant) is represented directly rather than as a register reference.

Methods inherited from class com.android.dx.rop.code.Insn

canThrow, contentEquals, copy, equals, getInlineString, getLocalAssignment, getOpcode, getPosition, getResult, getSources, hashCode, toHuman, toHumanWithInline, toString, toStringWithInline

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PlainInsn

public PlainInsn(Rop opcode,
                 SourcePosition position,
                 RegisterSpec result,
                 RegisterSpecList sources)

Constructs an instance.

Parameters:

opcode - non-null; the opcode

position - non-null; source position

result - null-ok; spec for the result, if any

sources - non-null; specs for all the sources

PlainInsn

public PlainInsn(Rop opcode,
                 SourcePosition position,
                 RegisterSpec result,
                 RegisterSpec source)

Constructs a single-source instance.

Parameters:

opcode - non-null; the opcode

position - non-null; source position

result - null-ok; spec for the result, if any

source - non-null; spec for the source

Method Detail

getCatches

public TypeList getCatches()

Gets the list of possibly-caught exceptions. This returns StdTypeList.EMPTY if this instruction has no handlers, which can be either if this instruction can't possibly throw or if it merely doesn't handle any of its possible exceptions. To determine whether this instruction can throw, use Insn.canThrow().

Specified by:

getCatches in class Insn

Returns:

non-null; the catches list

accept

public void accept(Insn.Visitor visitor)

Calls the appropriate method on the given visitor, depending on the class of this instance. Subclasses must override this.

Specified by:

accept in class Insn

Parameters:

visitor - non-null; the visitor to call on

withAddedCatch

public Insn withAddedCatch(Type type)

Returns an instance that is just like this one, except that it has a catch list with the given item appended to the end. This method throws an exception if this instance can't possibly throw. To determine whether this instruction can throw, use Insn.canThrow().

Specified by:

withAddedCatch in class Insn

Parameters:

type - non-null; type to append to the catch list

Returns:

non-null; an appropriately-constructed instance

withRegisterOffset

public Insn withRegisterOffset(int delta)

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

Specified by:

withRegisterOffset in class Insn

Parameters:

delta - the amount to offset register references by

Returns:

non-null; an appropriately-constructed instance

withSourceLiteral

public Insn withSourceLiteral()

Returns an instance that is just like this one, except that, if possible, the insn is converted into a version in which a source (if it is a constant) is represented directly rather than as a register reference. this is returned in cases where the translation is not possible.

Overrides:

withSourceLiteral in class Insn

Returns:

non-null; an appropriately-constructed instance

withNewRegisters

public Insn withNewRegisters(RegisterSpec result,
                             RegisterSpecList sources)

Returns an instance that is just like this one, except with new result and source registers.

Specified by:

withNewRegisters in class Insn

Parameters:

result - null-ok; new result register

sources - non-null; new sources registers

Returns:

non-null; an appropriately-constructed instance