libjava/gcj/array.h

   1 // array.h - Header file for CNI arrays.  -*- c++ -*-
   2
   3 /* Copyright (C) 1998, 1999  Red Hat, Inc.
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 #ifndef __GCJ_ARRAY_H__
  12 #define __GCJ_ARRAY_H__
  13
  14 #include <java/lang/Object.h>
  15
  16 extern "Java" {
  17
  18 class __JArray : public java::lang::Object
  19 {
  20 public:
  21   // FIXME: we'd like this to be `const' but that causes problems with
  22   // the C++ compiler.
  23   jsize length;
  24   friend jsize JvGetArrayLength (__JArray*);
  25 };
  26
  27 template<class T>
  28 class JArray : public __JArray
  29 {
  30   T data[0];
  31 public:
  32   friend T* elements<>(JArray<T>& x);
  33   friend T* elements<>(JArray<T>* x);
  34   // T* getData() { return data; }
  35   // T& operator[](jint i) { return data[i]; }
  36 };
  37
  38 template<class T>
  39 T* elements(JArray<T>& x) { return x.data; }
  40 template<class T>
  41 T* elements(JArray<T>* x) { return x->data; }
  42
  43 }; // end extern "Java"
  44
  45 /* These typesdefs match those in JNI. */
  46 typedef __JArray *jarray;
  47 typedef JArray<jobject> *jobjectArray;
  48 typedef JArray<jboolean> *jbooleanArray;
  49 typedef JArray<jbyte> *jbyteArray;
  50 typedef JArray<jchar> *jcharArray;
  51 typedef JArray<jshort> *jshortArray;
  52 typedef JArray<jint> *jintArray;
  53 typedef JArray<jlong> *jlongArray;
  54 typedef JArray<jfloat> *jfloatArray;
  55 typedef JArray<jdouble> *jdoubleArray;
  56 typedef JArray<jstring> *jstringArray;
  57
  58 extern class _Jv_PrimClass _Jv_byteClass, _Jv_shortClass, _Jv_intClass,
  59   _Jv_longClass, _Jv_booleanClass, _Jv_charClass, _Jv_floatClass,
  60   _Jv_doubleClass, _Jv_voidClass;
  61 #define JvPrimClass(TYPE) ((jclass) & _Jv_##TYPE##Class)
  62
  63 extern "C" jobjectArray _Jv_NewObjectArray(jsize length, jclass, jobject init);
  64 extern "C" jobject _Jv_NewPrimArray (jclass eltype, jint count);
  65
  66 extern inline jobjectArray
  67 JvNewObjectArray (jsize length, jclass cls, jobject init)
  68 {
  69   return _Jv_NewObjectArray (length, cls, init);
  70 }
  71
  72 extern inline jcharArray
  73 JvNewCharArray (jint length)
  74 {
  75   return (jcharArray) _Jv_NewPrimArray (JvPrimClass (char), length);
  76 }
  77
  78 extern inline jbooleanArray
  79 JvNewBooleanArray (jint length)
  80 {
  81   return (jbooleanArray) _Jv_NewPrimArray (JvPrimClass (boolean), length);
  82 }
  83
  84 extern inline jbyteArray
  85 JvNewByteArray (jint length)
  86 {
  87   return (jbyteArray) _Jv_NewPrimArray (JvPrimClass (byte), length);
  88 }
  89
  90 extern inline jshortArray
  91 JvNewShortArray (jint length)
  92 {
  93   return (jshortArray) _Jv_NewPrimArray (JvPrimClass (short), length);
  94 }
  95
  96 extern inline jintArray
  97 JvNewIntArray (jint length)
  98 {
  99   return (jintArray) _Jv_NewPrimArray (JvPrimClass (int), length);
 100 }
 101
 102 extern inline jlongArray
 103 JvNewLongArray (jint length)
 104 {
 105   return (jlongArray) _Jv_NewPrimArray (JvPrimClass (long), length);
 106 }
 107
 108 extern inline jfloatArray
 109 JvNewFloatArray (jint length)
 110 {
 111   return (jfloatArray) _Jv_NewPrimArray (JvPrimClass (float), length);
 112 }
 113
 114 extern inline jdoubleArray
 115 JvNewDoubleArray (jint length)
 116 {
 117   return (jdoubleArray) _Jv_NewPrimArray (JvPrimClass (double), length);
 118 }
 119
 120
 121 extern "C" jstringArray JvConvertArgv(int argc, const char **argv);
 122
 123 inline jsize JvGetArrayLength (jarray array) { return array->length; }
 124
 125 #endif /* __GCJ_ARRAY_H__ */