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/*
* Copyright (c) 2010-2023 JogAmp Community. All rights reserved.
* Copyright (c) 2003-2005 Sun Microsystems, Inc. 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.procaddress;
import com.jogamp.gluegen.MethodBinding;
import com.jogamp.gluegen.FunctionEmitter;
import com.jogamp.gluegen.JavaMethodBindingEmitter;
import java.io.*;
/** A specialization of JavaMethodBindingEmitter with knowledge of how
to call through a function pointer. */
public class ProcAddressJavaMethodBindingEmitter extends JavaMethodBindingEmitter {
protected boolean callThroughProcAddress;
protected boolean changeNameAndArguments;
protected String getProcAddressTableExpr;
protected ProcAddressEmitter emitter;
public ProcAddressJavaMethodBindingEmitter(final JavaMethodBindingEmitter methodToWrap, final boolean callThroughProcAddress,
final String getProcAddressTableExpr, final boolean changeNameAndArguments, final ProcAddressEmitter emitter) {
super(methodToWrap);
this.callThroughProcAddress = callThroughProcAddress;
this.getProcAddressTableExpr = getProcAddressTableExpr;
this.changeNameAndArguments = changeNameAndArguments;
this.emitter = emitter;
if (callThroughProcAddress) {
setCommentEmitter(new WrappedMethodCommentEmitter());
}
if (methodToWrap.getBinding().hasContainingType()) {
throw new IllegalArgumentException(
"Cannot create proc. address wrapper; method has containing type: \""
+ methodToWrap.getBinding() + "\"");
}
}
public ProcAddressJavaMethodBindingEmitter(final ProcAddressJavaMethodBindingEmitter methodToWrap) {
this(methodToWrap, methodToWrap.callThroughProcAddress, methodToWrap.getProcAddressTableExpr,
methodToWrap.changeNameAndArguments, methodToWrap.emitter);
}
@Override
public String getImplName() {
final String res = super.getImplName();
if (changeNameAndArguments) {
return ProcAddressEmitter.WRAP_PREFIX + res;
}
return res;
}
@Override
protected int appendArguments(final StringBuilder buf) {
int numEmitted = super.appendArguments(buf);
if (callThroughProcAddress) {
if (changeNameAndArguments) {
if (numEmitted > 0) {
buf.append(", ");
}
buf.append("long procAddress");
++numEmitted;
}
}
return numEmitted;
}
@Override
protected String getNativeImplMethodName() {
final String name = super.getNativeImplMethodName();
if (callThroughProcAddress) {
return ProcAddressEmitter.WRAP_PREFIX + name;
}
return name;
}
@Override
protected void emitPreCallSetup(final MethodBinding binding) {
super.emitPreCallSetup(binding);
if (callThroughProcAddress) {
final String procAddressVariable = ProcAddressEmitter.PROCADDRESS_VAR_PREFIX + binding.getNativeName();
unit.emitln(" final long __addr_ = " + getProcAddressTableExpr + "." + procAddressVariable + ";");
unit.emitln(" if (__addr_ == 0) {");
unit.emitf(" throw new %s(String.format(\"Method \\\"%%s\\\" not available\", \"%s\"));%n",
emitter.unsupportedExceptionType(), binding.getName());
unit.emitln(" }");
}
}
@Override
protected int emitCallArguments(final MethodBinding binding) {
int numEmitted = super.emitCallArguments(binding);
if (callThroughProcAddress) {
if (numEmitted > 0) {
unit.emit(", ");
}
unit.emit("__addr_");
++numEmitted;
}
return numEmitted;
}
/** This class emits the comment for the wrapper method */
public class WrappedMethodCommentEmitter extends JavaMethodBindingEmitter.DefaultCommentEmitter {
@Override
protected void emitBeginning(final FunctionEmitter methodEmitter, final PrintWriter writer) {
writer.print("Entry point (through function pointer) to C language function: <br> ");
}
}
}
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