Enum IntegerConstant
- java.lang.Object
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- java.lang.Enum<IntegerConstant>
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- net.bytebuddy.implementation.bytecode.constant.IntegerConstant
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<IntegerConstant>
,StackManipulation
public enum IntegerConstant extends java.lang.Enum<IntegerConstant> implements StackManipulation
This class is responsible for loading anyint
constant onto the operand stack. Note that within the JVM,boolean
,byte
,short
andchar
values are represented by integers and can therefore be loaded by using this class.
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected static class
IntegerConstant.ConstantPool
A stack manipulation that loads a JVM-integer value from a constant pool value onto the operand stack.protected static class
IntegerConstant.SingleBytePush
A stack manipulation that loads a JVM-integer value by aBIPUSH
operation which is legal for single byte integer values.protected static class
IntegerConstant.TwoBytePush
A stack manipulation that loads a JVM-integer value by aSIPUSH
operation which is legal for up to two byte integer values.-
Nested classes/interfaces inherited from interface net.bytebuddy.implementation.bytecode.StackManipulation
StackManipulation.Compound, StackManipulation.Illegal, StackManipulation.Size, StackManipulation.Trivial
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Enum Constant Summary
Enum Constants Enum Constant Description FIVE
A JVM-typeint
constant of value5
.FOUR
A JVM-typeint
constant of value4
.MINUS_ONE
A JVM-typeint
constant of value-1
.ONE
A JVM-typeint
constant of value1
.THREE
A JVM-typeint
constant of value3
.TWO
A JVM-typeint
constant of value2
.ZERO
A JVM-typeint
constant of value0
.
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Field Summary
Fields Modifier and Type Field Description private int
opcode
The shortcut opcode for loading a commonint
-compatible JVM value onto the operand stack.private static StackManipulation.Size
SIZE
The size impact of loading anint
value onto the operand stack.
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Constructor Summary
Constructors Modifier Constructor Description private
IntegerConstant(int opcode)
Creates a new JVM-integer constant loading stack manipulation for a given shortcut opcode.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description StackManipulation.Size
apply(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext)
Applies the stack manipulation that is described by this instance.static StackManipulation
forValue(boolean value)
Creates a stack manipulation for loading a boolean value onto the stack.static StackManipulation
forValue(int value)
Creates a stack manipulation for loading anint
value onto the stack.boolean
isValid()
Determines if this stack manipulation is valid.static IntegerConstant
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static IntegerConstant[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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MINUS_ONE
public static final IntegerConstant MINUS_ONE
A JVM-typeint
constant of value-1
.
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ZERO
public static final IntegerConstant ZERO
A JVM-typeint
constant of value0
.
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ONE
public static final IntegerConstant ONE
A JVM-typeint
constant of value1
.
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TWO
public static final IntegerConstant TWO
A JVM-typeint
constant of value2
.
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THREE
public static final IntegerConstant THREE
A JVM-typeint
constant of value3
.
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FOUR
public static final IntegerConstant FOUR
A JVM-typeint
constant of value4
.
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FIVE
public static final IntegerConstant FIVE
A JVM-typeint
constant of value5
.
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Field Detail
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SIZE
private static final StackManipulation.Size SIZE
The size impact of loading anint
value onto the operand stack.
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opcode
private final int opcode
The shortcut opcode for loading a commonint
-compatible JVM value onto the operand stack.
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Method Detail
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values
public static IntegerConstant[] 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 (IntegerConstant c : IntegerConstant.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static IntegerConstant valueOf(java.lang.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:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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forValue
public static StackManipulation forValue(boolean value)
Creates a stack manipulation for loading a boolean value onto the stack.- Parameters:
value
- Theboolean
to load onto the stack.- Returns:
- The stack manipulation for loading this
boolean
.
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forValue
public static StackManipulation forValue(int value)
Creates a stack manipulation for loading anint
value onto the stack.- Parameters:
value
- Theint
(orbyte
,short
,char
) value to load onto the stack.- Returns:
- A stack manipulation for loading the given value.
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isValid
public boolean isValid()
Determines if this stack manipulation is valid.- Specified by:
isValid
in interfaceStackManipulation
- Returns:
- If
false
, this manipulation cannot be applied and should throw an exception.
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apply
public StackManipulation.Size apply(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext)
Applies the stack manipulation that is described by this instance.- Specified by:
apply
in interfaceStackManipulation
- Parameters:
methodVisitor
- The method visitor used to write the method implementation to.implementationContext
- The context of the current implementation.- Returns:
- The changes to the size of the operand stack that are implied by this stack manipulation.
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