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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
* Copyright (c) 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.jogamp.gluegen;
import java.nio.*;
import com.jogamp.gluegen.cgram.types.*;
/**
* Describes a java-side representation of a type that is used to represent
* the same data on both the Java-side and C-side during a JNI operation. Also
* contains some utility methods for creating common types.
*/
public class JavaType {
/*
* Represents C arrays that will / can be represented
* with NIO buffers (resolved down to another JavaType later in processing)
*/
private enum C_PTR {
VOID, CHAR, SHORT, INT32, INT64, FLOAT, DOUBLE;
}
private final Class clazz; // Primitive types and other types representable as Class objects
private final String structName; // Types we're generating glue code for (i.e., C structs)
private final Type elementType; // Element type if this JavaType represents a C array
private final C_PTR primitivePointerType;
private static JavaType nioBufferType;
private static JavaType nioByteBufferType;
private static JavaType nioShortBufferType;
private static JavaType nioIntBufferType;
private static JavaType nioLongBufferType;
private static JavaType nioPointerBufferType;
private static JavaType nioFloatBufferType;
private static JavaType nioDoubleBufferType;
private static JavaType nioByteBufferArrayType;
@Override
public boolean equals(final Object arg) {
if ((arg == null) || (!(arg instanceof JavaType))) {
return false;
}
final JavaType t = (JavaType) arg;
return (this == t ||
(t.clazz == clazz &&
((structName == null ? t.structName == null : structName.equals(t.structName)) ||
((structName != null) && (t.structName != null) && (structName.equals(t.structName)))) &&
((elementType == t.elementType) ||
(elementType != null) && (t.elementType != null) && (elementType.equals(t.elementType))) &&
(primitivePointerType == t.primitivePointerType)));
}
@Override
public int hashCode() {
if (clazz == null) {
if (structName == null) {
return 0;
}
return structName.hashCode();
}
return clazz.hashCode();
}
public JavaType getElementType() {
return new JavaType(elementType);
}
public Type getElementCType() {
return elementType;
}
/** Creates a JavaType corresponding to the given Java type. This
can be used to represent arrays of primitive values or Strings;
the emitters understand how to perform proper conversion from
the corresponding C type. */
public static JavaType createForClass(final Class clazz) {
return new JavaType(clazz);
}
/** Creates a JavaType corresponding to the specified C CompoundType
name; for example, if "Foo" is supplied, then this JavaType
represents a "Foo *" by way of a StructAccessor. */
public static JavaType createForCStruct(final String name) {
return new JavaType(name);
}
/** Creates a JavaType corresponding to an array of the given
element type. This is used to represent arrays of "Foo **" which
should be mapped to Foo[] in Java. */
public static JavaType createForCArray(final Type elementType) {
return new JavaType(elementType);
}
public static JavaType createForCVoidPointer() {
return new JavaType(C_PTR.VOID);
}
public static JavaType createForCCharPointer() {
return new JavaType(C_PTR.CHAR);
}
public static JavaType createForCShortPointer() {
return new JavaType(C_PTR.SHORT);
}
public static JavaType createForCInt32Pointer() {
return new JavaType(C_PTR.INT32);
}
public static JavaType createForCInt64Pointer() {
return new JavaType(C_PTR.INT64);
}
public static JavaType createForCFloatPointer() {
return new JavaType(C_PTR.FLOAT);
}
public static JavaType createForCDoublePointer() {
return new JavaType(C_PTR.DOUBLE);
}
public static JavaType createForJNIEnv() {
return createForCStruct("JNIEnv");
}
public static JavaType forNIOBufferClass() {
if (nioBufferType == null) {
nioBufferType = createForClass(java.nio.Buffer.class);
}
return nioBufferType;
}
public static JavaType forNIOByteBufferClass() {
if (nioByteBufferType == null) {
nioByteBufferType = createForClass(java.nio.ByteBuffer.class);
}
return nioByteBufferType;
}
public static JavaType forNIOShortBufferClass() {
if (nioShortBufferType == null) {
nioShortBufferType = createForClass(java.nio.ShortBuffer.class);
}
return nioShortBufferType;
}
public static JavaType forNIOIntBufferClass() {
if (nioIntBufferType == null) {
nioIntBufferType = createForClass(java.nio.IntBuffer.class);
}
return nioIntBufferType;
}
public static JavaType forNIOLongBufferClass() {
if (nioLongBufferType == null) {
nioLongBufferType = createForClass(java.nio.LongBuffer.class);
}
return nioLongBufferType;
}
public static JavaType forNIOPointerBufferClass() {
if(nioPointerBufferType == null)
nioPointerBufferType = createForClass(com.jogamp.common.nio.PointerBuffer.class);
return nioPointerBufferType;
}
public static JavaType forNIOFloatBufferClass() {
if (nioFloatBufferType == null) {
nioFloatBufferType = createForClass(java.nio.FloatBuffer.class);
}
return nioFloatBufferType;
}
public static JavaType forNIODoubleBufferClass() {
if (nioDoubleBufferType == null) {
nioDoubleBufferType = createForClass(java.nio.DoubleBuffer.class);
}
return nioDoubleBufferType;
}
public static JavaType forNIOByteBufferArrayClass() {
if (nioByteBufferArrayType == null) {
final ByteBuffer[] tmp = new ByteBuffer[0];
nioByteBufferArrayType = createForClass(tmp.getClass());
}
return nioByteBufferArrayType;
}
/**
* Returns the Java Class corresponding to this type. Returns null if this
* object corresponds to a C primitive array type.
*/
public Class getJavaClass() {
return clazz;
}
/**
* Returns the Java type name corresponding to this type.
*/
public String getName() {
if (clazz != null) {
if (clazz.isArray()) {
return arrayName(clazz);
}
return clazz.getName();
}
if (elementType != null) {
return elementType.getName();
}
return structName;
}
/**
* Returns the descriptor (internal type signature) corresponding to
* this type.
*/
public String getDescriptor() {
// FIXME: this is not completely accurate at this point (for
// example, it knows nothing about the packages for compound
// types)
if (clazz != null) {
return descriptor(clazz);
}
if (elementType != null) {
if(elementType.getName()==null) {
throw new RuntimeException("elementType.name is null: "+getDebugString());
}
return "[" + descriptor(elementType.getName());
}
if( null != structName ) {
return descriptor(structName);
}
return "ANON_NIO";
}
/** Returns the String corresponding to the JNI type for this type,
or NULL if it can't be represented (i.e., it's a boxing class
that we need to call getBuffer() on.) */
public String jniTypeName() {
if (isCompoundTypeWrapper()) {
// These are sent down as Buffers (e.g., jobject)
return "jobject";
}
if (isArrayOfCompoundTypeWrappers()) {
// These are returned as arrays of ByteBuffers (e.g., jobjectArray)
return "jobjectArray /* of ByteBuffer */";
}
if (clazz == null) {
return null;
}
if (isVoid()) {
return "void";
}
if (isPrimitive()) {
return "j" + clazz.getName();
}
if (isPrimitiveArray() || isNIOBuffer()) {
// We now pass primitive arrays and buffers uniformly down to native code as java.lang.Object.
return "jobject";
}
if (isArray()) {
if (isStringArray()) {
return "jobjectArray /*elements are String*/";
}
final Class elementType = clazz.getComponentType();
if (isNIOBufferArray()) {
return "jobjectArray /*elements are " + elementType.getName() + "*/";
}
if (elementType.isArray()) {
// Type is array-of-arrays-of-something
if (elementType.getComponentType().isPrimitive()) {
// Type is an array-of-arrays-of-primitive
return "jobjectArray /* elements are " + elementType.getComponentType() + "[]*/";
//return "jobjectArray";
} else {
throw new RuntimeException("Multi-dimensional arrays of types that are not primitives or Strings are not supported.");
}
}
// Some unusual type that we don't handle
throw new RuntimeException("Unexpected and unsupported array type: \"" + this + "\"");
}
if (isString()) {
return "jstring";
}
return "jobject";
}
public boolean isNIOBuffer() {
return clazz != null && ( java.nio.Buffer.class.isAssignableFrom(clazz) ||
com.jogamp.common.nio.NativeBuffer.class.isAssignableFrom(clazz)) ;
}
public boolean isNIOByteBuffer() {
return (clazz == java.nio.ByteBuffer.class);
}
public boolean isNIOByteBufferArray() {
return (this == nioByteBufferArrayType);
}
public boolean isNIOBufferArray() {
return (isArray() && (java.nio.Buffer.class.isAssignableFrom(clazz.getComponentType())));
}
public boolean isNIOLongBuffer() {
return (clazz == java.nio.LongBuffer.class);
}
public boolean isNIOPointerBuffer() {
return (clazz == com.jogamp.common.nio.PointerBuffer.class);
}
public boolean isString() {
return (clazz == java.lang.String.class);
}
public boolean isArray() {
return ((clazz != null) && clazz.isArray());
}
public boolean isFloatArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Float.TYPE);
}
public boolean isDoubleArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Double.TYPE);
}
public boolean isByteArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Byte.TYPE);
}
public boolean isIntArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Integer.TYPE);
}
public boolean isShortArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Short.TYPE);
}
public boolean isLongArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == Long.TYPE);
}
public boolean isStringArray() {
return (clazz != null && clazz.isArray() && clazz.getComponentType() == java.lang.String.class);
}
public boolean isPrimitive() {
return ((clazz != null) && !isArray() && clazz.isPrimitive() && (clazz != Void.TYPE));
}
public boolean isPrimitiveArray() {
return (isArray() && (clazz.getComponentType().isPrimitive()));
}
public boolean isShort() {
return (clazz == Short.TYPE);
}
public boolean isFloat() {
return (clazz == Float.TYPE);
}
public boolean isDouble() {
return (clazz == Double.TYPE);
}
public boolean isByte() {
return (clazz == Byte.TYPE);
}
public boolean isLong() {
return (clazz == Long.TYPE);
}
public boolean isInt() {
return (clazz == Integer.TYPE);
}
public boolean isVoid() {
return (clazz == Void.TYPE);
}
public boolean isCompoundTypeWrapper() {
return (clazz == null && structName != null && !isJNIEnv());
}
public boolean isArrayOfCompoundTypeWrappers() {
return elementType != null;
}
public boolean isCPrimitivePointerType() {
return primitivePointerType != null;
}
public boolean isCVoidPointerType() {
return C_PTR.VOID.equals(primitivePointerType);
}
public boolean isCCharPointerType() {
return C_PTR.CHAR.equals(primitivePointerType);
}
public boolean isCShortPointerType() {
return C_PTR.SHORT.equals(primitivePointerType);
}
public boolean isCInt32PointerType() {
return C_PTR.INT32.equals(primitivePointerType);
}
public boolean isCInt64PointerType() {
return C_PTR.INT64.equals(primitivePointerType);
}
public boolean isCFloatPointerType() {
return C_PTR.FLOAT.equals(primitivePointerType);
}
public boolean isCDoublePointerType() {
return C_PTR.DOUBLE.equals(primitivePointerType);
}
public boolean isJNIEnv() {
return clazz == null && "JNIEnv".equals(structName);
}
@Override
public Object clone() {
return new JavaType(primitivePointerType, clazz, structName, elementType);
}
@Override
public String toString() {
return getName();
}
//----------------------------------------------------------------------
// Internals only below this point
//
private void append(final StringBuilder sb, final String val, final boolean prepComma) {
if( prepComma ) {
sb.append(", ");
}
sb.append(val);
}
// For debugging
public String getDebugString() {
final StringBuilder sb = new StringBuilder();
sb.append("JType[");
boolean prepComma = false;
{
final String javaTypeName = getName();
if( null != javaTypeName ) {
append(sb, javaTypeName, false);
} else {
append(sb, "ANON", false);
}
sb.append(" / ");
if( null != structName ) {
append(sb, "'"+structName+"'", prepComma); prepComma=true;
} else {
append(sb, "NIL", prepComma); prepComma=true;
}
}
if( null != clazz ) {
append(sb, "clazz = "+clazz.getName(), prepComma); prepComma=true;
}
if( null != elementType ) {
append(sb, "elementType = "+elementType, prepComma); prepComma=true;
}
if( null != primitivePointerType ) {
append(sb, "primitivePointerType = "+primitivePointerType, prepComma); prepComma=true;
}
append(sb, "is[", prepComma); prepComma=false;
if( isArray() ) {
append(sb, "array", prepComma); prepComma=true;
}
if( isArrayOfCompoundTypeWrappers() ) {
append(sb, "compoundArray", prepComma); prepComma=true;
}
if( isCompoundTypeWrapper() ) {
append(sb, "compound", prepComma); prepComma=true;
}
if( isArray() ) {
append(sb, "array", prepComma); prepComma=true;
}
if( isPrimitive() ) {
append(sb, "primitive", prepComma); prepComma=true;
}
if( isPrimitiveArray() ) {
append(sb, "primitiveArray", prepComma); prepComma=true;
}
if( isNIOBuffer() ) {
append(sb, "nioBuffer", prepComma); prepComma=true;
}
if( isNIOBufferArray() ) {
append(sb, "nioBufferArray", prepComma); prepComma=true;
}
if( isCPrimitivePointerType() ) {
append(sb, "C-Primitive-Pointer", prepComma); prepComma=true;
}
append(sb, "descriptor '"+getDescriptor()+"'", prepComma); prepComma=true;
return sb.toString();
}
/**
* Constructs a representation for a type corresponding to the given Class
* argument.
*/
private JavaType(final Class clazz) {
this.primitivePointerType = null;
this.clazz = clazz;
this.structName = null;
this.elementType = null;
}
/** Constructs a type representing a named C struct. */
private JavaType(final String structName) {
this.primitivePointerType = null;
this.clazz = null;
this.structName = structName;
this.elementType = null;
}
/** Constructs a type representing a pointer to a C primitive
(integer, floating-point, or void pointer) type. */
private JavaType(final C_PTR primitivePointerType) {
this.primitivePointerType = primitivePointerType;
this.clazz = null;
this.structName = null;
this.elementType = null;
}
/** Constructs a type representing an array of C pointers. */
private JavaType(final Type elementType) {
this.primitivePointerType = null;
this.clazz = null;
this.structName = null;
this.elementType = elementType;
}
/** clone only */
private JavaType(final C_PTR primitivePointerType, final Class clazz, final String name, final Type elementType) {
this.primitivePointerType = primitivePointerType;
this.clazz = clazz;
this.structName = name;
this.elementType = elementType;
}
private String arrayName(Class clazz) {
final StringBuilder buf = new StringBuilder();
int arrayCount = 0;
while (clazz.isArray()) {
++arrayCount;
clazz = clazz.getComponentType();
}
buf.append(clazz.getName());
while (--arrayCount >= 0) {
buf.append("[]");
}
return buf.toString();
}
private String arrayDescriptor(Class clazz) {
final StringBuilder buf = new StringBuilder();
while (clazz.isArray()) {
buf.append("[");
clazz = clazz.getComponentType();
}
buf.append(descriptor(clazz));
return buf.toString();
}
private String descriptor(final Class clazz) {
if (clazz.isPrimitive()) {
if (clazz == Boolean.TYPE) return "Z";
if (clazz == Byte.TYPE) return "B";
if (clazz == Double.TYPE) return "D";
if (clazz == Float.TYPE) return "F";
if (clazz == Integer.TYPE) return "I";
if (clazz == Long.TYPE) return "J";
if (clazz == Short.TYPE) return "S";
if (clazz == Void.TYPE) return "V";
throw new RuntimeException("Unexpected primitive type " + clazz.getName());
}
if (clazz.isArray()) {
return arrayDescriptor(clazz);
}
return descriptor(clazz.getName());
}
private String descriptor(final String referenceTypeName) {
return "L" + referenceTypeName.replace('.', '/') + ";";
}
}
