## Uses of Class
org.apache.tapestry5.plastic.Opcodes

- Packages that use Opcodes
  Package | Description
  --- | ---
  org.apache.tapestry5.plastic | Plastic, Tapestry's component class transformation library based on ASM

- - ### Uses of Opcodes in org.apache.tapestry5.plastic

    Methods in org.apache.tapestry5.plastic with annotations of type Opcodes
    Modifier and Type | Method and Description
    --- | ---
    `void` | TryCatchBlock.`addCatch(String exceptionClassName, InstructionBuilderCallback callback)` Ends the block (if not already ended) and inserts a catch block for the named exception.
    `void` | TryCatchBlock.`addFinally(InstructionBuilderCallback callback)` As with `TryCatchBlock.addCatch(String, InstructionBuilderCallback)`, but the exception caught is null, which acts as a finally block in the Java language.
    `InstructionBuilder` | InstructionBuilder.`arrayLength()` Expects the top object on the stack to be an array.
    `InstructionBuilder` | InstructionBuilder.`boxPrimitive(String typeName)` If the type name is a primitive type, adds code to box the type into the equivalent wrapper type, using static methods on the wrapper type.
    `InstructionBuilder` | InstructionBuilder.`castOrUnbox(String typeName)` Casts the object on top of the stack to the indicated type.
    `InstructionBuilder` | InstructionBuilder.`checkcast(Class clazz)`
    `InstructionBuilder` | InstructionBuilder.`checkcast(String className)` Adds a check that the object on top of the stack is assignable to the indicated class.
    `InstructionBuilder` | InstructionBuilder.`compareSpecial(String typeName)` Special comparison logic for primitive float, double and long.
    `InstructionBuilder` | InstructionBuilder.`doWhile(Condition condition, WhileCallback callback)` Implements a simple loop based on a condition.
    `InstructionBuilder` | InstructionBuilder.`dupe()` Duplicates the top object on the stack.
    `InstructionBuilder` | InstructionBuilder.`dupe(int depth)` Duplicates the top object on the stack, placing the result at some depth.
    `InstructionBuilder` | InstructionBuilder.`dupeWide()` Duplicates a wide value (a primitive long or double).
    `InstructionBuilder` | InstructionBuilder.`getField(PlasticField field)` Loads an instance or static field onto the stack.
    `InstructionBuilder` | InstructionBuilder.`getField(String className, String fieldName, Class fieldType)` Loads a field onto the stack.
    `InstructionBuilder` | InstructionBuilder.`getField(String className, String fieldName, String typeName)` Loads an instance field onto the stack.
    `InstructionBuilder` | InstructionBuilder.`getStaticField(String className, String fieldName, Class fieldType)` Gets a static field; does not consume a value from the stack, but pushes the fields' value onto the stack.
    `InstructionBuilder` | InstructionBuilder.`getStaticField(String className, String fieldName, String typeName)` Gets a static field; does not consume a value from the stack, but pushes the fields' value onto the stack.
    `InstructionBuilder` | InstructionBuilder.`increment(LocalVariable variable)` Increments a local integer variable.
    `InstructionBuilder` | InstructionBuilder.`invoke(Class clazz, Class returnType, String methodName, Class... argumentTypes)` Automatically invokes an interface or virtual method.
    `InstructionBuilder` | InstructionBuilder.`invokeConstructor(Class clazz, Class... argumentTypes)`
    `InstructionBuilder` | InstructionBuilder.`invokeConstructor(String className, String... argumentTypes)` Invokes a constructor on a class.
    `InstructionBuilder` | InstructionBuilder.`invokeInterface(String interfaceName, String returnType, String methodName, String... argumentTypes)` Invokes a standard virtual method.
    `InstructionBuilder` | InstructionBuilder.`invokeSpecial(String containingClassName, MethodDescription description)` Invokes an instance method of a base class, or a private method of a class, using the target object and parameters already on the stack.
    `InstructionBuilder` | InstructionBuilder.`invokeStatic(Class clazz, Class returnType, String methodName, Class... argumentTypes)` Invokes a static method of a class.
    `InstructionBuilder` | InstructionBuilder.`invokeVirtual(PlasticMethod method)`
    `InstructionBuilder` | InstructionBuilder.`invokeVirtual(String className, String returnType, String methodName, String... argumentTypes)` Invokes a standard virtual method.
    `InstructionBuilder` | InstructionBuilder.`iterateArray(InstructionBuilderCallback callback)` Expects an array to be the top value on the stack.
    `InstructionBuilder` | InstructionBuilder.`loadArgument(int index)` Loads an argument onto the stack, using the opcode appropriate to the argument's type.
    `InstructionBuilder` | InstructionBuilder.`loadArguments()` Loads all arguments for the current method onto the stack; this is used when invoking a method that takes the exact same parameters (often, a super-class implementation).
    `InstructionBuilder` | InstructionBuilder.`loadArrayElement()` Loads a value from an array object.
    `InstructionBuilder` | InstructionBuilder.`loadArrayElement(int index, String elementType)` Loads a value from an array object, which must be the top element of the stack.
    `InstructionBuilder` | InstructionBuilder.`loadConstant(Object constant)` Loads a constant value
    `InstructionBuilder` | InstructionBuilder.`loadNull()` Loads the null constant onto the stack.
    `InstructionBuilder` | InstructionBuilder.`loadThis()` Loads this onto the stack.
    `InstructionBuilder` | InstructionBuilder.`loadTypeConstant(Class type)` Loads a Java type (a Class instance) as a constant.
    `InstructionBuilder` | InstructionBuilder.`loadTypeConstant(String typeName)` Loads a Java type (a Class instance) as a constant.
    `InstructionBuilder` | InstructionBuilder.`loadVariable(LocalVariable variable)` Loads a value from a local variable and pushes it onto the stack.
    `InstructionBuilder` | InstructionBuilder.`newInstance(Class clazz)` A convenience version of `InstructionBuilder.newInstance(String)` used when the class is known at build time.
    `InstructionBuilder` | InstructionBuilder.`newInstance(String className)` Creates a new, uninitialized instance of the indicated class.
    `InstructionBuilder` | InstructionBuilder.`popWide()` Pops a wide value (a primitive long or double).
    `InstructionBuilder` | InstructionBuilder.`putField(String className, String fieldName, Class fieldType)`
    `InstructionBuilder` | InstructionBuilder.`putField(String className, String fieldName, String typeName)` Expects the stack to contain the instance to update, and the value to store into the field.
    `InstructionBuilder` | InstructionBuilder.`putStaticField(String className, String fieldName, Class fieldType)` Sets a static field; the new field value should be on top of the stack.
    `InstructionBuilder` | InstructionBuilder.`putStaticField(String className, String fieldName, String typeName)` Sets a static field; the new field value should be on top of the stack.
    `InstructionBuilder` | InstructionBuilder.`returnDefaultValue()` Returns the default value for the method, which may be null, or a specific primitive value.
    `InstructionBuilder` | InstructionBuilder.`returnResult()` Returns the top value on the stack.
    `InstructionBuilder` | InstructionBuilder.`startSwitch(int min, int max, SwitchCallback callback)` Starts a switch statement.
    `InstructionBuilder` | InstructionBuilder.`storeVariable(LocalVariable variable)` Stores the value on top of the stack to a local variable (previously defined by `InstructionBuilder.startVariable(String, LocalVariableCallback)`.
    `InstructionBuilder` | InstructionBuilder.`swap()` Swaps the top element of the stack with the next element down.
    `InstructionBuilder` | InstructionBuilder.`throwException()` Throws the exception on the top of the stack.
    `InstructionBuilder` | InstructionBuilder.`throwException(Class<? extends Throwable> exceptionType, String message)`
    `InstructionBuilder` | InstructionBuilder.`throwException(String className, String message)` Throws an exception with a fixed message.
    `InstructionBuilder` | InstructionBuilder.`unboxPrimitive(String typeName)` Unboxes a wrapper type to a primitive type if typeName is a primitive type name (the value on the stack should be the corresponding wrapper type instance).
    `InstructionBuilder` | InstructionBuilder.`when(Condition condition, InstructionBuilderCallback ifTrue)` Simplified version of `InstructionBuilder.when(Condition, WhenCallback)` that simply executes the callback code when the condition is true and does nothing if the condition is false (the more general case).
    `InstructionBuilder` | InstructionBuilder.`when(Condition condition, WhenCallback callback)` Executes conditional code based on a `Condition`.

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