283 lines
8.2 KiB
C++
283 lines
8.2 KiB
C++
// Class.h - Header file for java.lang.Class. -*- c++ -*-
|
|
|
|
/* Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
|
|
|
|
This file is part of libgcj.
|
|
|
|
This software is copyrighted work licensed under the terms of the
|
|
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
|
details. */
|
|
|
|
// Written primary using compiler source and Class.java as guides.
|
|
#ifndef __JAVA_LANG_CLASS_H__
|
|
#define __JAVA_LANG_CLASS_H__
|
|
|
|
#pragma interface
|
|
|
|
#include <java/lang/Object.h>
|
|
#include <java/lang/String.h>
|
|
#include <java/net/URL.h>
|
|
|
|
// We declare these here to avoid including gcj/cni.h.
|
|
extern "C" void _Jv_InitClass (jclass klass);
|
|
extern "C" void _Jv_RegisterClasses (jclass *classes);
|
|
|
|
// These are the possible values for the `state' field of the class
|
|
// structure. Note that ordering is important here. Whenever the
|
|
// state changes, one should notify all waiters of this class.
|
|
enum
|
|
{
|
|
JV_STATE_NOTHING = 0, // Set by compiler.
|
|
|
|
JV_STATE_PRELOADING = 1, // Can do _Jv_FindClass.
|
|
JV_STATE_LOADING = 3, // Has super installed.
|
|
JV_STATE_LOADED = 5, // Is complete.
|
|
|
|
JV_STATE_COMPILED = 6, // This was a compiled class.
|
|
|
|
JV_STATE_PREPARED = 7, // Layout & static init done.
|
|
JV_STATE_LINKED = 9, // Strings interned.
|
|
|
|
JV_STATE_IN_PROGRESS = 10, // <Clinit> running.
|
|
JV_STATE_DONE = 12, //
|
|
|
|
JV_STATE_ERROR = 14 // must be last.
|
|
};
|
|
|
|
struct _Jv_Field;
|
|
struct _Jv_VTable;
|
|
|
|
struct _Jv_Constants
|
|
{
|
|
jint size;
|
|
jbyte *tags;
|
|
_Jv_word *data;
|
|
};
|
|
|
|
struct _Jv_Method
|
|
{
|
|
_Jv_Utf8Const *name;
|
|
_Jv_Utf8Const *signature;
|
|
_Jv_ushort accflags;
|
|
void *ncode;
|
|
|
|
_Jv_Method *getNextMethod ()
|
|
{ return this + 1; }
|
|
};
|
|
|
|
#define JV_PRIMITIVE_VTABLE ((_Jv_VTable *) -1)
|
|
|
|
class java::lang::Class : public java::lang::Object
|
|
{
|
|
public:
|
|
static jclass forName (jstring className);
|
|
JArray<jclass> *getClasses (void);
|
|
|
|
java::lang::ClassLoader *getClassLoader (void)
|
|
{
|
|
return loader;
|
|
}
|
|
|
|
jclass getComponentType (void)
|
|
{
|
|
return isArray () ? (* (jclass *) &methods) : 0;
|
|
}
|
|
|
|
java::lang::reflect::Constructor *getConstructor (JArray<jclass> *);
|
|
JArray<java::lang::reflect::Constructor *> *getConstructors (void);
|
|
java::lang::reflect::Constructor *getDeclaredConstructor (JArray<jclass> *);
|
|
JArray<java::lang::reflect::Constructor *> *getDeclaredConstructors (void);
|
|
java::lang::reflect::Field *getDeclaredField (jstring);
|
|
JArray<java::lang::reflect::Field *> *getDeclaredFields (void);
|
|
java::lang::reflect::Method *getDeclaredMethod (jstring, JArray<jclass> *);
|
|
JArray<java::lang::reflect::Method *> *getDeclaredMethods (void);
|
|
|
|
JArray<jclass> *getDeclaredClasses (void);
|
|
jclass getDeclaringClass (void);
|
|
|
|
java::lang::reflect::Field *getField (jstring);
|
|
private:
|
|
jint _getFields (JArray<java::lang::reflect::Field *> *result, jint offset);
|
|
JArray<java::lang::reflect::Constructor *> *_getConstructors (jboolean);
|
|
java::lang::reflect::Field *getField (jstring, jint);
|
|
jint _getMethods (JArray<java::lang::reflect::Method *> *result,
|
|
jint offset);
|
|
public:
|
|
JArray<java::lang::reflect::Field *> *getFields (void);
|
|
|
|
JArray<jclass> *getInterfaces (void);
|
|
|
|
void getSignature (java::lang::StringBuffer *buffer);
|
|
static jstring getSignature (JArray<jclass> *, jboolean is_constructor);
|
|
java::lang::reflect::Method *getMethod (jstring, JArray<jclass> *);
|
|
JArray<java::lang::reflect::Method *> *getMethods (void);
|
|
|
|
jint getModifiers (void)
|
|
{
|
|
return accflags;
|
|
}
|
|
|
|
jstring getName (void);
|
|
|
|
java::net::URL *getResource (jstring resourceName);
|
|
java::io::InputStream *getResourceAsStream (jstring resourceName);
|
|
JArray<jobject> *getSigners (void);
|
|
|
|
jclass getSuperclass (void)
|
|
{
|
|
return superclass;
|
|
}
|
|
|
|
jboolean isArray (void)
|
|
{
|
|
return name->data[0] == '[';
|
|
}
|
|
|
|
jboolean isAssignableFrom (jclass cls);
|
|
jboolean isInstance (jobject obj);
|
|
jboolean isInterface (void);
|
|
|
|
jboolean isPrimitive (void)
|
|
{
|
|
return vtable == JV_PRIMITIVE_VTABLE;
|
|
}
|
|
|
|
jobject newInstance (void);
|
|
jstring toString (void);
|
|
|
|
// FIXME: this probably shouldn't be public.
|
|
jint size (void)
|
|
{
|
|
return size_in_bytes;
|
|
}
|
|
|
|
// finalization
|
|
void finalize ();
|
|
|
|
private:
|
|
void checkMemberAccess (jint flags);
|
|
|
|
// Various functions to handle class initialization.
|
|
java::lang::Throwable *hackTrampoline (jint, java::lang::Throwable *);
|
|
void hackRunInitializers (void);
|
|
void initializeClass (void);
|
|
|
|
// Friend functions implemented in natClass.cc.
|
|
friend _Jv_Method *_Jv_GetMethodLocal (jclass klass, _Jv_Utf8Const *name,
|
|
_Jv_Utf8Const *signature);
|
|
friend _Jv_Method* _Jv_LookupDeclaredMethod (jclass, _Jv_Utf8Const *,
|
|
_Jv_Utf8Const*);
|
|
friend void _Jv_InitClass (jclass klass);
|
|
|
|
friend jfieldID JvGetFirstInstanceField (jclass);
|
|
friend jint JvNumInstanceFields (jclass);
|
|
friend jfieldID JvGetFirstStaticField (jclass);
|
|
friend jint JvNumStaticFields (jclass);
|
|
|
|
friend jobject _Jv_AllocObject (jclass, jint);
|
|
friend jobjectArray _Jv_NewObjectArray (jsize, jclass, jobject);
|
|
friend jobject _Jv_NewPrimArray (jclass, jint);
|
|
friend jobject _Jv_JNI_ToReflectedField (_Jv_JNIEnv *, jclass, jfieldID);
|
|
friend jfieldID _Jv_FromReflectedField (java::lang::reflect::Field *);
|
|
|
|
friend jmethodID _Jv_FromReflectedMethod (java::lang::reflect::Method *);
|
|
friend jmethodID _Jv_FromReflectedConstructor (java::lang::reflect::Constructor *);
|
|
friend jint JvNumMethods (jclass);
|
|
friend jmethodID JvGetFirstMethod (jclass);
|
|
|
|
friend class _Jv_PrimClass;
|
|
|
|
// Friends classes and functions to implement the ClassLoader
|
|
friend class java::lang::ClassLoader;
|
|
|
|
friend void _Jv_WaitForState (jclass, int);
|
|
friend void _Jv_RegisterClasses (jclass *classes);
|
|
friend void _Jv_RegisterInitiatingLoader (jclass,java::lang::ClassLoader*);
|
|
friend void _Jv_UnregisterClass (jclass);
|
|
friend jclass _Jv_FindClass (_Jv_Utf8Const *name,
|
|
java::lang::ClassLoader *loader);
|
|
friend jclass _Jv_FindClassInCache (_Jv_Utf8Const *name,
|
|
java::lang::ClassLoader *loader);
|
|
friend jclass _Jv_FindArrayClass (jclass element,
|
|
java::lang::ClassLoader *loader);
|
|
friend jclass _Jv_NewClass (_Jv_Utf8Const *name, jclass superclass,
|
|
java::lang::ClassLoader *loader);
|
|
|
|
friend void _Jv_PrepareCompiledClass (jclass);
|
|
|
|
#ifdef INTERPRETER
|
|
friend jboolean _Jv_IsInterpretedClass (jclass);
|
|
friend void _Jv_InitField (jobject, jclass, _Jv_Field*);
|
|
friend int _Jv_DetermineVTableIndex (jclass, _Jv_Utf8Const *,
|
|
_Jv_Utf8Const*);
|
|
friend void _Jv_InitField (jobject, jclass, int);
|
|
friend _Jv_word _Jv_ResolvePoolEntry (jclass, int);
|
|
friend void _Jv_PrepareClass (jclass);
|
|
|
|
friend class _Jv_ClassReader;
|
|
friend class _Jv_InterpClass;
|
|
friend class _Jv_InterpMethod;
|
|
friend class _Jv_InterpMethodInvocation;
|
|
#endif
|
|
|
|
#ifdef JV_MARKOBJ_DECL
|
|
friend JV_MARKOBJ_DECL;
|
|
#endif
|
|
|
|
// Chain for class pool.
|
|
jclass next;
|
|
// Name of class.
|
|
_Jv_Utf8Const *name;
|
|
// Access flags for class.
|
|
_Jv_ushort accflags;
|
|
// The superclass, or null for Object.
|
|
jclass superclass;
|
|
// Class constants.
|
|
_Jv_Constants constants;
|
|
// Methods. If this is an array class, then this field holds a
|
|
// pointer to the element type. If this is a primitive class, this
|
|
// is used to cache a pointer to the appropriate array type.
|
|
_Jv_Method *methods;
|
|
// Number of methods. If this class is primitive, this holds the
|
|
// character used to represent this type in a signature.
|
|
jshort method_count;
|
|
// Number of methods in the vtable.
|
|
jshort vtable_method_count;
|
|
// The fields.
|
|
_Jv_Field *fields;
|
|
// Size of instance fields, in bytes.
|
|
jint size_in_bytes;
|
|
// Total number of fields (instance and static).
|
|
jshort field_count;
|
|
// Number of static fields.
|
|
jshort static_field_count;
|
|
// The vtbl for all objects of this class.
|
|
_Jv_VTable *vtable;
|
|
// Interfaces implemented by this class.
|
|
jclass *interfaces;
|
|
// The class loader for this class.
|
|
java::lang::ClassLoader *loader;
|
|
// Number of interfaces.
|
|
jshort interface_count;
|
|
// State of this class.
|
|
jbyte state;
|
|
// The thread which has locked this class. Used during class
|
|
// initialization.
|
|
java::lang::Thread *thread;
|
|
};
|
|
|
|
|
|
extern inline jint
|
|
JvNumMethods (jclass klass)
|
|
{
|
|
return klass->method_count;
|
|
}
|
|
|
|
extern inline jmethodID
|
|
JvGetFirstMethod (jclass klass)
|
|
{
|
|
return &klass->methods[0];
|
|
}
|
|
|
|
#endif /* __JAVA_LANG_CLASS_H__ */
|