org.jruby.ext.ffi.jffi

Class NativeClosureProxy

java.lang.Object

org.jruby.ext.ffi.jffi.NativeClosureProxy

All Implemented Interfaces:

com.kenai.jffi.Closure

final class NativeClosureProxy
extends java.lang.Object
implements com.kenai.jffi.Closure

Wraps a ruby proc in a JFFI Closure

Nested Class Summary

Nested classes/interfaces inherited from interface com.kenai.jffi.Closure

com.kenai.jffi.Closure.Buffer, com.kenai.jffi.Closure.Handle

Field Summary

Fields

Modifier and Type	Field and Description
private CallSite	callSite
protected NativeFunctionInfo	closureInfo
private static int	LONG_SIZE
private java.lang.ref.WeakReference<java.lang.Object>	proc
protected Ruby	runtime

Constructor Summary

Constructors

Constructor and Description
NativeClosureProxy(Ruby runtime, NativeFunctionInfo closureInfo, java.lang.Object proc)
NativeClosureProxy(Ruby runtime, NativeFunctionInfo closureInfo, java.lang.Object proc, CallSite callSite)

Method Summary

Modifier and Type	Method and Description
private static long	addressValue(IRubyObject value) Extracts the primitive value from a Ruby object.
private static IRubyObject	fromNative(Ruby runtime, Type type, com.kenai.jffi.Closure.Buffer buffer, int index) Converts a native value into a ruby object.
private static IRubyObject	getStringParameter(Ruby runtime, com.kenai.jffi.Closure.Buffer buffer, int index) Converts a native string value into a ruby string object.
void	invoke(com.kenai.jffi.Closure.Buffer buffer)
protected void	invoke(com.kenai.jffi.Closure.Buffer buffer, java.lang.Object recv)
private static long	longValue(IRubyObject value) Extracts the primitive value from a Ruby object.
private static void	setReturnValue(Ruby runtime, Type type, com.kenai.jffi.Closure.Buffer buffer, IRubyObject value) Converts a ruby return value into a native callback return value.

Methods inherited from class java.lang.Object

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

Field Detail

LONG_SIZE

private static final int LONG_SIZE

runtime

protected final Ruby runtime

closureInfo

protected final NativeFunctionInfo closureInfo

proc

private final java.lang.ref.WeakReference<java.lang.Object> proc

callSite

private final CallSite callSite

Constructor Detail

NativeClosureProxy

NativeClosureProxy(Ruby runtime,
                   NativeFunctionInfo closureInfo,
                   java.lang.Object proc)

NativeClosureProxy

NativeClosureProxy(Ruby runtime,
                   NativeFunctionInfo closureInfo,
                   java.lang.Object proc,
                   CallSite callSite)

Method Detail

invoke

public void invoke(com.kenai.jffi.Closure.Buffer buffer)

Specified by:

invoke in interface com.kenai.jffi.Closure

invoke

protected final void invoke(com.kenai.jffi.Closure.Buffer buffer,
                            java.lang.Object recv)

longValue

private static final long longValue(IRubyObject value)

Extracts the primitive value from a Ruby object. This is similar to Util.longValue(), except it won't throw exceptions for invalid values.

Parameters:

value - The Ruby object to convert

Returns:

a java long value.

addressValue

private static final long addressValue(IRubyObject value)

Extracts the primitive value from a Ruby object. This is similar to Util.longValue(), except it won't throw exceptions for invalid values.

Parameters:

value - The Ruby object to convert

Returns:

a java long value.

setReturnValue

private static final void setReturnValue(Ruby runtime,
                                         Type type,
                                         com.kenai.jffi.Closure.Buffer buffer,
                                         IRubyObject value)

Converts a ruby return value into a native callback return value.

Parameters:

runtime - The ruby runtime the callback is attached to

type - The ruby type of the return value

buffer - The native parameter buffer

value - The ruby value

fromNative

private static final IRubyObject fromNative(Ruby runtime,
                                            Type type,
                                            com.kenai.jffi.Closure.Buffer buffer,
                                            int index)

Converts a native value into a ruby object.

Parameters:

runtime - The ruby runtime to create the ruby object in

type - The type of the native parameter

buffer - The JFFI Closure parameter buffer.

index - The index of the parameter in the buffer.

Returns:

A new Ruby object.

getStringParameter

private static final IRubyObject getStringParameter(Ruby runtime,
                                                    com.kenai.jffi.Closure.Buffer buffer,
                                                    int index)

Converts a native string value into a ruby string object.

Parameters:

runtime - The ruby runtime to create the ruby string in

buffer - The JFFI Closure parameter buffer.

index - The index of the parameter in the buffer.

Returns:

A new Ruby string object or nil if string is NULL.