Package serp.bytecode

Class GetFieldInstruction

java.lang.Object

serp.bytecode.CodeEntry

serp.bytecode.Instruction

serp.bytecode.FieldInstruction

serp.bytecode.GetFieldInstruction

All Implemented Interfaces:

BCEntity, VisitAcceptor

public class GetFieldInstruction
extends FieldInstruction

Loads a value from a field onto the stack.

Field Summary

Fields inherited from class serp.bytecode.CodeEntry

byteIndex, next, prev

Constructor Summary

Constructors

Constructor	Description
GetFieldInstruction(Code owner, int opcode)

Method Summary

Modifier and Type	Method	Description
void	acceptVisit(BCVisitor visit)	Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.
int	getLogicalStackChange()	Return the logical number of stack positions changed by this instruction.
int	getStackChange()	Return the number of stack positions this instruction pushes or pops during its execution.

Methods inherited from class serp.bytecode.FieldInstruction

equalsInstruction, getField, getFieldDeclarerBC, getFieldDeclarerName, getFieldDeclarerType, getFieldIndex, getFieldName, getFieldType, getFieldTypeBC, getFieldTypeName, getLength, read, read, setField, setField, setField, setField, setField, setField, setField, setField, setFieldDeclarer, setFieldDeclarer, setFieldDeclarer, setFieldIndex, setFieldName, setFieldType, setFieldType, setFieldType, write

Methods inherited from class serp.bytecode.Instruction

getByteIndex, getClassLoader, getCode, getLineNumber, getName, getOpcode, getPool, getProject, invalidate, invalidateByteIndexes, isValid, setOpcode

Methods inherited from class java.lang.Object

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

Constructor Details

GetFieldInstruction

GetFieldInstruction(Code owner,
 int opcode)

Method Details

getLogicalStackChange

public int getLogicalStackChange()

Description copied from class: Instruction

Return the logical number of stack positions changed by this instruction. In other words, ignore weirdness with longs and doubles taking two stack positions.

Overrides:

getLogicalStackChange in class Instruction

getStackChange

public int getStackChange()

Description copied from class: Instruction

Return the number of stack positions this instruction pushes or pops during its execution.

Overrides:

getStackChange in class Instruction

Returns:

0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack

acceptVisit

public void acceptVisit(BCVisitor visit)

Description copied from interface: VisitAcceptor

Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.

Specified by:

acceptVisit in interface VisitAcceptor

Overrides:

acceptVisit in class Instruction