org.apache.flex.abc.visitors

Interface IMethodBodyVisitor

All Superinterfaces:

IVisitor

All Known Implementing Classes:

DeadCodeFilter, DelegatingMethodBodyVisitor, NilMethodBodyVisitor, PeepholeOptimizerMethodBodyVisitor

public interface IMethodBodyVisitor
extends IVisitor

An IMethodBodyVisitor defines a method's local variables and ABC instructions.

Method Summary

Methods

Modifier and Type	Method and Description
void	labelCurrent(Label l) Bind a Label object (not to be confused with the AVM OP_label instruction) to the last-visited ABC instruction in this method.
void	labelNext(Label l) Bind a Label object (not to be confused with the AVM OP_label instruction) to the next ABC instruction that gets visited in this method
void	visit() Begin processing a method body.
int	visitException(Label from, Label to, Label target, Name exceptionType, Name catchVar) Visit an exception handler.
void	visitInstruction(Instruction instruction) Vist an instruction
void	visitInstruction(int opcode) Visit an instruction with no operands.
void	visitInstruction(int opcode, int immediateOperand) Visit an instruction with an immediate operand.
void	visitInstruction(int opcode, Object singleOperand) Visit an instruction with a single operand (convenience method).
void	visitInstruction(int opcode, Object[] operands) Visit an instruction.
void	visitInstructionList(InstructionList newList) Reset the method body's instruction list en bloc.
ITraitsVisitor	visitTraits() Visit the method body's traits (local variables).

Methods inherited from interface org.apache.flex.abc.visitors.IVisitor

visitEnd

Method Detail

visit

void visit()

Begin processing a method body.

visitTraits

ITraitsVisitor visitTraits()

Visit the method body's traits (local variables).

Returns:

a traits visitor, or null if the traits aren't of interest.

visitInstructionList

void visitInstructionList(InstructionList newList)

Reset the method body's instruction list en bloc.

visitInstruction

void visitInstruction(int opcode)

Visit an instruction with no operands.

Parameters:

opcode - - the instruction's opcode.

visitInstruction

void visitInstruction(int opcode,
                    int immediateOperand)

Visit an instruction with an immediate operand.

Parameters:

opcode - - the instruction's opcode.

immediateOperand - - the operand.

visitInstruction

void visitInstruction(int opcode,
                    Object[] operands)

Visit an instruction.

Parameters:

opcode - - the instruction's opcode.

operands - - the instruction's operands.

visitInstruction

void visitInstruction(int opcode,
                    Object singleOperand)

Visit an instruction with a single operand (convenience method).

Parameters:

opcode - - the instruction's opcode.

singleOperand - - the instruction's operand.

visitInstruction

void visitInstruction(Instruction instruction)

Vist an instruction

Parameters:

instruction - the Instruction to visit

visitException

int visitException(Label from,
                 Label to,
                 Label target,
                 Name exceptionType,
                 Name catchVar)

Visit an exception handler.

Parameters:

from - - the label that starts the "try" region.

to - - the label that ends the "try" region.

target - - the "catch" target.

exceptionType - - the type of exception to be handled. "*" is valid and handles any exception.

catchVar - - the name of the exception variable. May be null if no exception variable is desired.

Returns:

the exception's exception number.

labelCurrent

void labelCurrent(Label l)

Bind a Label object (not to be confused with the AVM OP_label instruction) to the last-visited ABC instruction in this method.

labelNext

void labelNext(Label l)

Bind a Label object (not to be confused with the AVM OP_label instruction) to the next ABC instruction that gets visited in this method