Field(Ruby runtime, RubyClass klass, FieldIO io) {
this(
runtime,
klass,
(Type) runtime.fastGetModule("FFI").fastGetClass("Type").fastGetConstant("VOID"),
-1,
io);
}
ArrayProxy(Ruby runtime, IRubyObject ptr, long offset, Type.Array type, MemoryOp aio) {
this(
runtime,
runtime.fastGetModule("FFI").fastGetClass(CLASS_NAME).fastGetClass("ArrayProxy"),
ptr,
offset,
type,
aio);
}
CharArrayProxy(Ruby runtime, IRubyObject ptr, long offset, Type.Array type, MemoryOp aio) {
super(
runtime,
runtime.fastGetModule("FFI").fastGetClass("StructLayout").fastGetClass("CharArrayProxy"),
ptr,
offset,
type,
aio);
}
Buffer(Ruby runtime, byte[] data, int offset, int size) {
this(
runtime,
runtime.fastGetModule("FFI").fastGetClass("Buffer"),
new ArrayMemoryIO(runtime, data, offset, size),
size,
1,
IN | OUT);
}
Buffer(Ruby runtime, int size, int flags) {
this(
runtime,
runtime.fastGetModule("FFI").fastGetClass("Buffer"),
new ArrayMemoryIO(runtime, size),
size,
1,
flags);
}
/**
* Creates a new <tt>StructLayout</tt> instance.
*
* @param runtime The runtime for the <tt>StructLayout</tt>.
* @param fields The fields map for this struct.
* @param size the total size of the struct.
* @param alignment The minimum alignment required when allocating memory.
*/
private StructLayout(
Ruby runtime, RubyClass klass, Collection<IRubyObject> fields, int size, int alignment) {
super(runtime, klass, NativeType.STRUCT, size, alignment);
int cfCount = 0, refCount = 0;
List<Field> fieldList = new ArrayList<Field>(fields.size());
List<IRubyObject> names = new ArrayList<IRubyObject>(fields.size());
List<Member> memberList = new ArrayList<Member>(fields.size());
Map<IRubyObject, Member> memberStringMap = new HashMap<IRubyObject, Member>(fields.size());
Map<IRubyObject, Member> memberSymbolMap =
new IdentityHashMap<IRubyObject, Member>(fields.size() * 2);
int index = 0;
for (IRubyObject obj : fields) {
if (!(obj instanceof Field)) {
throw runtime.newTypeError(
obj, runtime.fastGetModule("FFI").fastGetClass("StructLayout").fastGetClass("Field"));
}
Field f = (Field) obj;
if (!(f.name instanceof RubySymbol)) {
throw runtime.newTypeError("fields list contains field with invalid name");
}
names.add(f.name);
fieldList.add(f);
Member m =
new Member(
f,
index,
f.isCacheable() ? cfCount++ : -1,
f.isValueReferenceNeeded() ? refCount++ : -1);
memberSymbolMap.put(f.name, m);
// Allow fields to be accessed as ['name'] as well as [:name] for legacy code
memberStringMap.put(f.name, m);
memberStringMap.put(f.name.asString(), m);
memberList.add(m);
}
this.cacheableFieldCount = cfCount;
this.referenceFieldCount = refCount;
// Create the ordered list of field names from the map
this.fieldNames = Collections.unmodifiableList(new ArrayList<IRubyObject>(names));
this.fields = Collections.unmodifiableList(fieldList);
this.fieldStringMap = Collections.unmodifiableMap(memberStringMap);
this.fieldSymbolMap = Collections.unmodifiableMap(memberSymbolMap);
this.members = Collections.unmodifiableList(memberList);
}
public static RubyClass createJavaProxy(ThreadContext context) {
Ruby runtime = context.getRuntime();
RubyClass javaProxy =
runtime.defineClass(
"JavaProxy",
runtime.getObject(),
new ObjectAllocator() {
public IRubyObject allocate(Ruby runtime, RubyClass klazz) {
return new JavaProxy(runtime, klazz);
}
});
RubyClass singleton = javaProxy.getSingletonClass();
singleton.addReadWriteAttribute(context, "java_class");
javaProxy.defineAnnotatedMethods(JavaProxy.class);
javaProxy.includeModule(runtime.fastGetModule("JavaProxyMethods"));
return javaProxy;
}
public static RubyModule getModule(Ruby runtime) {
return (RubyModule) runtime.fastGetModule("FFI");
}
public static ConsoleHolder getHolder(Ruby runtime) {
return (ConsoleHolder) (runtime.fastGetModule("Readline").dataGetStruct());
}
