Package com.tonic.analysis.instruction

Class InstructionFactory

java.lang.Object

com.tonic.analysis.instruction.InstructionFactory

public final class InstructionFactory
extends Object

Decodes raw bytecode into Instruction objects.

Method Summary

Modifier and Type	Method	Description
static Instruction	createInstruction(int opcode, int offset, byte[] bytecode, ConstPool constPool)	Decodes the single instruction starting at an offset, reading its operands from the bytecode.
static List<Instruction>	parse(byte[] code, ConstPool constPool)	Parses a method body into its instructions, in offset order.

Methods inherited from class java.lang.Object

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

Method Detail

parse

public static List<Instruction> parse(byte[] code,
                                      ConstPool constPool)

Parses a method body into its instructions, in offset order.

Parameters:

code - the method bytecode

constPool - the class's constant pool for operand resolution

Returns:

the decoded instructions in offset order

createInstruction

public static Instruction createInstruction(int opcode,
                                            int offset,
                                            byte[] bytecode,
                                            ConstPool constPool)

Decodes the single instruction starting at an offset, reading its operands from the bytecode.

Parameters:

opcode - the opcode byte at the offset

offset - the bytecode offset of the instruction

bytecode - the full method bytecode

constPool - the class's constant pool for operand resolution

Returns:

the decoded instruction