Package com.tonic.analysis.instruction

Enum DupInstruction.DupType

java.lang.Object

java.lang.Enum<DupInstruction.DupType>

com.tonic.analysis.instruction.DupInstruction.DupType

All Implemented Interfaces:

Serializable, Comparable<DupInstruction.DupType>

Enclosing class:

DupInstruction

public static enum DupInstruction.DupType
extends Enum<DupInstruction.DupType>

The stack-duplication variants (DUP through DUP2_X2), each pairing a JVM opcode with its mnemonic.

Enum Constant Summary

Enum Constants

Enum Constant	Description
DUP	Copies the top one-word value and pushes the copy on top of it.
DUP_X1	Copies the top one-word value and inserts it beneath the one word below.
DUP_X2	Copies the top one-word value and inserts it beneath the two words below, as used to stash an array reference under a long index or value.
DUP2	Copies the top two words, which is either one long or double or a pair of one-word values.
DUP2_X1	Copies the top two words and inserts them beneath the one word below.
DUP2_X2	Copies the top two words and inserts them beneath the two words below.

Method Summary

Modifier and Type	Method	Description
static DupInstruction.DupType	fromOpcode(int opcode)	Looks up the duplication variant for a JVM opcode.
String	getMnemonic()
int	getOpcode()
static DupInstruction.DupType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static DupInstruction.DupType[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DUP

public static final DupInstruction.DupType DUP

Copies the top one-word value and pushes the copy on top of it.

DUP_X1

public static final DupInstruction.DupType DUP_X1

Copies the top one-word value and inserts it beneath the one word below.

DUP_X2

public static final DupInstruction.DupType DUP_X2

Copies the top one-word value and inserts it beneath the two words below, as used to stash an array reference under a long index or value.

DUP2

public static final DupInstruction.DupType DUP2

Copies the top two words, which is either one long or double or a pair of one-word values.

DUP2_X1

public static final DupInstruction.DupType DUP2_X1

Copies the top two words and inserts them beneath the one word below.

DUP2_X2

public static final DupInstruction.DupType DUP2_X2

Copies the top two words and inserts them beneath the two words below.

Method Detail

values

public static DupInstruction.DupType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DupInstruction.DupType c : DupInstruction.DupType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DupInstruction.DupType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getOpcode

public int getOpcode()

Returns:

the opcode

getMnemonic

public String getMnemonic()

Returns:

the mnemonic

fromOpcode

public static DupInstruction.DupType fromOpcode(int opcode)

Looks up the duplication variant for a JVM opcode.

Parameters:

opcode - the JVM opcode

Returns:

the matching variant, or null if the opcode is not a DUP-family opcode