Package org.codehaus.groovy.classgen.asm

Class MethodCaller

java.lang.Object

org.codehaus.groovy.classgen.asm.MethodCaller

public class MethodCaller
extends Object

A helper class to invoke methods more easily in ASM

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MethodCaller()
	MethodCaller(int opcode, Class theClass, String name)	Creates a MethodCaller for a specific method invocation.
	MethodCaller(int opcode, Class theClass, String name, int parameterCount)	Creates a MethodCaller for a specific method invocation with parameter count.

Method Summary

Modifier and Type	Method	Description
void	call(org.objectweb.asm.MethodVisitor methodVisitor)	Generates the method invocation bytecode.
protected Method	getMethod()	Returns the reflected Method for this caller, matching by name and, if specified, by parameter count.
String	getMethodDescriptor()	Returns the method descriptor for this method call.
static MethodCaller	newInterface(Class theClass, String name)	Creates a MethodCaller for an interface method.
static MethodCaller	newStatic(Class theClass, String name)	Creates a MethodCaller for a static method.
static MethodCaller	newStatic(Class theClass, String name, int parameterCount)	Creates a MethodCaller for a static method with a specific parameter count.
static MethodCaller	newVirtual(Class theClass, String name)	Creates a MethodCaller for a virtual method.

Methods inherited from class java.lang.Object

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

Constructor Details

MethodCaller

protected MethodCaller()

Since:

2.5.0

MethodCaller

public MethodCaller(int opcode,
 Class theClass,
 String name)

Creates a MethodCaller for a specific method invocation.

Parameters:

opcode - the invocation opcode

theClass - the class containing the method

name - the method name

MethodCaller

public MethodCaller(int opcode,
 Class theClass,
 String name,
 int parameterCount)

Creates a MethodCaller for a specific method invocation with parameter count.

Parameters:

opcode - the invocation opcode

theClass - the class containing the method

name - the method name

parameterCount - the number of parameters

Method Details

newStatic

public static MethodCaller newStatic(Class theClass,
 String name)

Creates a MethodCaller for a static method.

Parameters:

theClass - the class containing the method

name - the method name

Returns:

a new MethodCaller for a static method

newStatic

public static MethodCaller newStatic(Class theClass,
 String name,
 int parameterCount)

Creates a MethodCaller for a static method with a specific parameter count.

Parameters:

theClass - the class containing the method

name - the method name

parameterCount - the number of parameters

Returns:

a new MethodCaller for a static method

newInterface

public static MethodCaller newInterface(Class theClass,
 String name)

Creates a MethodCaller for an interface method.

Parameters:

theClass - the interface containing the method

name - the method name

Returns:

a new MethodCaller for an interface method

newVirtual

public static MethodCaller newVirtual(Class theClass,
 String name)

Creates a MethodCaller for a virtual method.

Parameters:

theClass - the class containing the method

name - the method name

Returns:

a new MethodCaller for a virtual method

call

public void call(org.objectweb.asm.MethodVisitor methodVisitor)

Generates the method invocation bytecode.

Parameters:

methodVisitor - the method visitor to write to

getMethodDescriptor

public String getMethodDescriptor()

Returns the method descriptor for this method call.

Returns:

the method descriptor

getMethod

protected Method getMethod()

Returns the reflected Method for this caller, matching by name and, if specified, by parameter count.

Returns:

the matching Method

Throws:

RuntimeException - if no matching method can be found