Package org.jruby.ir.instructions

Class BlockGivenInstr

java.lang.Object

org.jruby.ir.instructions.Instr

org.jruby.ir.instructions.ResultBaseInstr

org.jruby.ir.instructions.OneOperandResultBaseInstr

org.jruby.ir.instructions.BlockGivenInstr

All Implemented Interfaces:

FixedArityInstr, ResultInstr

public class BlockGivenInstr
extends OneOperandResultBaseInstr
implements FixedArityInstr

Represents a defined?(yield) check, which works like a call to block_given? without requiring special access to the caller's frame.

Field Summary

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

result

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

EMPTY_OPERANDS

Constructor Summary

Constructors

Constructor	Description
BlockGivenInstr(Variable result, Operand block)

Method Summary

Modifier and Type	Method	Description
Instr	clone(CloneInfo ii)	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 BlockGivenInstr	decode(IRReaderDecoder d)
Operand	getBlockArg()
Object	interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp)
void	visit(IRVisitor visitor)

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

encode, getOperand1, getOperands, setOperand, setOperand1

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

getResult, updateResult

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

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

Methods inherited from class java.lang.Object

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

Constructor Details

BlockGivenInstr

public BlockGivenInstr(Variable result,
 Operand block)

Method Details

getBlockArg

public Operand getBlockArg()

clone

public Instr clone(CloneInfo ii)

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:

ii - 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.

decode

public static BlockGivenInstr decode(IRReaderDecoder d)

interpret

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

Overrides:

interpret in class Instr

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Instr