Package org.jruby.ir.instructions

Class BSwitchInstr

java.lang.Object

org.jruby.ir.instructions.Instr

org.jruby.ir.instructions.MultiBranchInstr

org.jruby.ir.instructions.BSwitchInstr

public class BSwitchInstr
extends MultiBranchInstr

Represents a multiple-target jump instruction based on a switch-like table

Field Summary

Fields

Modifier and Type	Field	Description
private final Label	elseTarget
private final int[]	jumps
private Operand	operand
private final Label	rubyCase
private final Label[]	targets

Fields inherited from class org.jruby.ir.instructions.Instr

EMPTY_OPERANDS

Constructor Summary

Constructors

Constructor	Description
BSwitchInstr(int[] jumps, Operand operand, Label rubyCase, Label[] targets, Label elseTarget)

Method Summary

Modifier and Type	Method	Description
Instr	clone(CloneInfo info)	Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope).
static BSwitchInstr	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
Operand	getCaseOperand()
Label	getElseTarget()
int[]	getJumps()
Label[]	getJumpTargets()
Operand[]	getOperands()
Label	getRubyCaseLabel()
Label[]	getTargets()
int	interpretAndGetNewIPC(ThreadContext context, DynamicScope currDynScope, StaticScope currScope, IRubyObject self, Object[] temp, int ipc)
private static boolean	jumpsAreSorted(int[] jumps)
void	setOperand(int i, Operand operand)
void	visit(IRVisitor visitor)

Methods inherited from class org.jruby.ir.instructions.Instr

canBeDeletedFromScope, canRaiseException, cloneOperands, computeScopeFlags, dumpableFields, getOperation, getUsedVariables, hasSideEffects, interpret, isDead, isDeletable, markDead, renameVars, simplifyAndGetResult, simplifyOperands, toString, toStringNonOperandArgs, transfersControl

Methods inherited from class java.lang.Object

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

Field Details

jumps

private final int[] jumps

operand

private Operand operand

rubyCase

private final Label rubyCase

targets

private final Label[] targets

elseTarget

private final Label elseTarget

Constructor Details

BSwitchInstr

public BSwitchInstr(int[] jumps,
 Operand operand,
 Label rubyCase,
 Label[] targets,
 Label elseTarget)

Method Details

getOperands

public Operand[] getOperands()

Specified by:

getOperands in class Instr

getCaseOperand

public Operand getCaseOperand()

getJumps

public int[] getJumps()

getRubyCaseLabel

public Label getRubyCaseLabel()

getTargets

public Label[] getTargets()

getElseTarget

public Label getElseTarget()

setOperand

public void setOperand(int i,
 Operand operand)

Specified by:

setOperand in class Instr

clone

public Instr clone(CloneInfo info)

Description copied from class: Instr

Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope). This might renaming variables and labels to eliminate naming conflicts. The implementation might vary on the cloning mode.

Specified by:

clone in class Instr

Parameters:

info - This object manages renaming of variables and labels, handles args and return values.

Returns:

a new instruction that can be used in the target scope.

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class Instr

decode

public static BSwitchInstr decode(IRReaderDecoder d)

interpretAndGetNewIPC

public int interpretAndGetNewIPC(ThreadContext context,
 DynamicScope currDynScope,
 StaticScope currScope,
 IRubyObject self,
 Object[] temp,
 int ipc)

Overrides:

interpretAndGetNewIPC in class Instr

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Instr

getJumpTargets

public Label[] getJumpTargets()

Specified by:

getJumpTargets in class MultiBranchInstr

jumpsAreSorted

private static boolean jumpsAreSorted(int[] jumps)