1999-04-07 16:42:40 +02:00
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// Class.java - Representation of a Java class.
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2000-03-07 20:55:28 +01:00
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/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
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1999-04-07 16:42:40 +02:00
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.lang;
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import java.io.Serializable;
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import java.io.InputStream;
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import java.lang.reflect.*;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date October 1, 1998
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* "The Java Language Specification", ISBN 0-201-63451-1
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* plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
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* plus gcj compiler sources (to determine object layout)
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* Status: Sufficient for our purposes, but some methods missing
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* and some not implemented.
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*/
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public final class Class implements Serializable
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{
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public static native Class forName (String className)
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throws ClassNotFoundException;
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public native Class[] getClasses ();
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public native ClassLoader getClassLoader ();
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public native Class getComponentType ();
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public native Constructor getConstructor (Class[] parameterTypes)
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throws NoSuchMethodException, SecurityException;
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2000-01-04 09:46:52 +01:00
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// This is used to implement getConstructors and
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// getDeclaredConstructors.
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private native Constructor[] _getConstructors (boolean declared)
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throws SecurityException;
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public Constructor[] getConstructors () throws SecurityException
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{
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return _getConstructors (false);
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}
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public native Constructor getDeclaredConstructor (Class[] parameterTypes)
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throws NoSuchMethodException, SecurityException;
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public native Class[] getDeclaredClasses () throws SecurityException;
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public Constructor[] getDeclaredConstructors () throws SecurityException
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{
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return _getConstructors (true);
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}
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public native Field getDeclaredField (String fieldName)
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throws NoSuchFieldException, SecurityException;
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public native Field[] getDeclaredFields () throws SecurityException;
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public native Method getDeclaredMethod (String methodName,
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Class[] parameterTypes)
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throws NoSuchMethodException, SecurityException;
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public native Method[] getDeclaredMethods () throws SecurityException;
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// This is marked as unimplemented in the JCL book.
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public native Class getDeclaringClass ();
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private native Field getField (String fieldName, int hash)
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throws NoSuchFieldException, SecurityException;
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public Field getField (String fieldName)
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throws NoSuchFieldException, SecurityException
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{
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SecurityManager s = System.getSecurityManager();
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if (s != null)
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s.checkMemberAccess (this, java.lang.reflect.Member.DECLARED);
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Field fld = getField(fieldName, fieldName.hashCode());
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if (fld == null)
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throw new NoSuchFieldException(fieldName);
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return fld;
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}
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2000-01-04 09:46:52 +01:00
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private native Field[] _getFields (Field[] result, int offset);
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public native Field[] getFields () throws SecurityException;
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public native Class[] getInterfaces ();
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private final native void getSignature (StringBuffer buffer);
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2000-01-05 17:35:20 +01:00
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private static final native String getSignature (Class[] parameterTypes,
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boolean is_construtor);
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public native Method getMethod (String methodName, Class[] parameterTypes)
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throws NoSuchMethodException, SecurityException;
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2000-01-05 23:22:10 +01:00
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private native int _getMethods (Method[] result, int offset);
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public native Method[] getMethods () throws SecurityException;
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public native int getModifiers ();
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public native String getName ();
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1999-08-18 16:16:42 +02:00
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public java.net.URL getResource (String resourceName)
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{
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String name = resourcePath (resourceName);
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ClassLoader loader = getClassLoader ();
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if (loader == null)
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return ClassLoader.getSystemResource (name);
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else
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return loader.getResource (name);
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}
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1999-04-07 16:42:40 +02:00
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1999-08-18 16:16:42 +02:00
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public java.io.InputStream getResourceAsStream (String resourceName)
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{
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String name = resourcePath (resourceName);
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ClassLoader loader = getClassLoader ();
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if (loader == null)
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return ClassLoader.getSystemResourceAsStream (name);
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else
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return loader.getResourceAsStream (name);
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}
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private String resourcePath (String resourceName)
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{
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if (resourceName.startsWith ("/"))
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return resourceName.substring (1);
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Class c = this;
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while (c.isArray ())
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c = c.getComponentType ();
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String packageName = c.getName ().replace ('.', '/');
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int end = packageName.lastIndexOf ('/');
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if (end == -1)
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return resourceName;
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else
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return packageName.substring (0, end+1) + resourceName;
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1999-04-07 16:42:40 +02:00
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}
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// FIXME: implement. Requires java.security.
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public Object[] getSigners ()
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{
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return null;
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}
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public native Class getSuperclass ();
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public native boolean isArray ();
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public native boolean isAssignableFrom (Class cls);
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public native boolean isInstance (Object obj);
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public native boolean isInterface ();
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public native boolean isPrimitive ();
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public native Object newInstance ()
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throws InstantiationException, IllegalAccessException;
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public String toString ()
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{
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if (isPrimitive ())
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return getName ();
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return (isInterface () ? "interface " : "class ") + getName ();
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}
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// Don't allow new classes to be made.
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private Class ()
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{
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}
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// Do a security check.
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private void checkMemberAccess (int flags)
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{
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SecurityManager sm = System.getSecurityManager();
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if (sm != null)
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sm.checkMemberAccess(this, flags);
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}
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// Initialize the class.
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private native void initializeClass ();
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[multiple changes]
1999-08-09 Anthony Green <green@cygnus.com>
* gij.cc: New file.
* include/config.h.in: Rebuilt.
* acconfig.h: Add INTERPRETER.
* configure: Rebuilt.
* Makefile.in: Rebuilt.
* Makefile.am (libffi_files): Identify the libffi object files for
inclusion in libgcj.
(LIBFFIINCS): Define.
* interpret.cc (gnu::gcj::runtime::MethodInvocation::continue1):
Dummy definition for configurations without an interpreter.
* java/net/natPlainSocketImpl.cc (getOption): Disamiguate call to
java::lang::Boolean constructor.
* include/java-interp.h: Always include java-cpool.h.
* java/lang/natClassLoader.cc (getVMClassLoader0): Always return 0
when INTERPRETER not defined.
* java/lang/Class.h (finalize): Define.
* gnu/gcj/util/path/DirectoryPathEntry.java (getURL): Catch
IOException from File.getCanonicalPath.
(getStream): Likewise.
* NEWS: More news.
* THANKS: More thanks.
1999-08-09 Kresten Krab Thorup <krab@gnu.org>
* resolve.cc (get_ffi_type_from_signature): Generate uint16 for
jchar type.
(_Jv_PrepareClass): Allow non-abstract classes to
have abstract subclasses.
(_Jv_ResolvePoolEntry): Revert subclass check for protected
fields and methods.
* interpret.cc (continue1/perform_invoke): Don't sign extend
uint16 return val.
(continue1/lshl,lshr): Push long, not int.
(continue1/ulshr): Use UINT64, not long long.
* defineclass.cc (handleFieldsEnd): Handle case when all fields
are static.
* java/lang/natClass.cc (forName): Add call to _Jv_InitClass.
* java/lang/FirstThread.java (run): Add top-level exception
handler.
(run0): Renamed from run.
1999-08-08 Kresten Krab Thorup <krab@gnu.org>
* configure.in (--with-interpreter): Added.
* include/config.h.in (INTERPRETER): Added.
* java/lang/ClassLoader.java: File replaced.
* java/lang/VMClassLoader.java: New file.
* java/lang/natClassLoader.cc: New file.
* gnu/gcj/runtime/MethodInvocation.java: New file.
* gnu/gcj/util/path/SearchPath.java: New file.
* gnu/gcj/util/path/PathEntry.java: New file.
* gnu/gcj/util/path/DirectoryPathEntry.java: New file.
* gnu/gcj/util/path/ZipPathEntry.java: New file.
* gnu/gcj/util/path/URLPathEntry.java: New file.
* gnu/gcj/util/path/CacheEntry.java: New file.
* include/java-interp.h: New file.
* include/java-cpool.h: New file.
* include/java-insns.h: New file.
* defineclass.cc: New file.
* interpret.cc: New file.
* resolve.cc: New file.
* java/lang/natClass.cc (loaded_classes, _Jv_RegisterClass,
_Jv_RegisterClasses, _Jv_FindClassInCache, _Jv_FindClass,
_Jv_NewClass, _Jv_FindArrayClass): Moved to natClassLoader.cc.
(finalize): New.
(STATE_NOTHING, STATE_RESOLVED, STATE_IN_PROGRESS, STATE_DONE,
STATE_ERROR): Moved to java/lang/Class.h and renamed with JV_
prefix.
(initializeClass): Use new JV_ prefixed names. Also, call
ClassLoader::resolveClass instead of _Jv_ResolveClass.
* java/lang/Class.h (JV_STATE_PRELOADING, JV_STATE_LOADING,
JV_STATE_LOADED, JV_STATE_COMPILED, JV_STATE_PREPARED,
JV_STATE_LINKED): New.
(_Jv_WaitForState, _Jv_RegisterInitiatingLoader,
_Jv_UnregisterClass, _Jv_InternClassStrings): New friends.
(_Jv_IsInterpretedClass, _Jv_InitField, _Jv_LookupDeclaredMethod,
_Jv_DetermineVTableIndex, _Jv_ResolvePoolEntry, _Jv_PrepareClass,
_Jv_ClassReader, _Jv_InterpClass, _Jv_InterpMethod,
_Jv_InterpMethodInvocation): New friends for interpreter.
(finalize): New.
(CONSTANT_Class, CONSTANT_String, etc.): Moved to
include/java-cpool.h and renamed with JV_ prefix.
* include/jvm.h (_Jv_makeUtf8Const, _Jv_makeUtf8TypeConst): New
decls.
(_Jv_UnregisterClass): New decl.
* java/lang/natClassLoader.cc (_Jv_FindArrayClass): Added
class loader argument.
(_Jv_FindClass): Use class loader.
* prims.cc (_Jv_makeUtf8Const): New function.
(_Jv_NewObjectArray): Change use of _Jv_FindArrayClass.
(_Jv_NewPrimArray): Ditto.
(_Jv_FindClassFromSignature): Ditto.
* java/lang/reflect/natArray.cc (newInstance): Ditto.
* java/lang/reflect/natMethod.cc (getType): Ditto.
* include/java-field.h (_Jv_Field::isRef): Make robust for
non-resolved contexts.
* boehm.cc (_Jv_MarkObj): Mark interpreter-related fields.
Also, don't mark class->next field.
* java/lang/VirtualMachineError.java: Added FIXME note.
* configure.in (INTERPSPEC): New spec.
* libgcj.spec.in: Added INTERPSPEC.
* Makefile.am: Added gcjh friends for java/lang/VMClassLoader and
gnu/gcj/runtime/MethodInvocation.
(libgcj_la_SOURCES): Added resolve.cc defineclass.cc interpret.cc.
(ordinary_java_source_files): Added above mentioned java classes.
* configure: Rebuilt.
* Makefile.in: Rebuilt.
From-SVN: r28597
1999-08-08 16:06:23 +02:00
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// finalization
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protected native void finalize ();
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1999-04-07 16:42:40 +02:00
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}
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