Bug 1144 - Add 'DelegateImplementation': Cleanup MethodBinding/FunctionBinding Semantics

- Clarify name semantics: name -> [interfaceName, implName, nativeName]
- JavaMethodBindingEmitter: Refine native identity via isNativeMethod + isPrivateNativeMethod
- ProcAddressEmitter: Remove hack whether we need to wrap .. use isNativeMethod + isPrivateNativeMethod

10 files changed, 199 insertions, 120 deletions

diff --git a/make/scripts/runtest.sh b/make/scripts/runtest.sh
index 7aa8ab8..5d19e7f 100755
--- a/make/scripts/runtest.sh
+++ b/make/scripts/runtest.sh
@@ -125,12 +125,12 @@ function onetest() {
 #onetest com.jogamp.common.nio.TestStructAccessorEndian 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.nio.TestByteBufferInputStream 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.nio.TestByteBufferOutputStream 2>&1 | tee -a $LOG
-onetest com.jogamp.common.nio.TestByteBufferCopyStream 2>&1 | tee -a $LOG
+#onetest com.jogamp.common.nio.TestByteBufferCopyStream 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.os.TestElfReader01 $* 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.test.junit.internals.TestType 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.PCPPTest 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.test.junit.generation.Test1p1JavaEmitter 2>&1 | tee -a $LOG
-#onetest com.jogamp.gluegen.test.junit.generation.Test1p2ProcAddressEmitter 2>&1 | tee -a $LOG
+onetest com.jogamp.gluegen.test.junit.generation.Test1p2ProcAddressEmitter 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.test.junit.generation.Test1p2LoadJNIAndImplLib 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.test.junit.structgen.TestStructGen01 2>&1 | tee -a $LOG
 #onetest com.jogamp.gluegen.test.junit.structgen.TestStructGen02 2>&1 | tee -a $LOG
diff --git a/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java b/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
index 1987668..bb95226 100644
--- a/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
+++ b/src/java/com/jogamp/gluegen/CMethodBindingEmitter.java
@@ -150,8 +150,16 @@ public class CMethodBindingEmitter extends FunctionEmitter {
   public final MethodBinding getBinding() { return binding; }
 
   @Override
-  public String getName() {
-    return binding.getName();
+  public String getInterfaceName() {
+    return binding.getInterfaceName();
+  }
+  @Override
+  public String getImplName() {
+    return binding.getImplName();
+  }
+  @Override
+  public String getNativeName() {
+    return binding.getNativeName();
   }
 
   @Override
@@ -313,12 +321,8 @@ public class CMethodBindingEmitter extends FunctionEmitter {
     writer.print("_");
     if (isOverloadedBinding)    {
       writer.print(jniMangle(binding));
-      //System.err.println("OVERLOADED MANGLING FOR " + getName() +
-      //                   " = " + jniMangle(binding));
     } else {
-      writer.print(JavaEmitter.jniMangle(getName()));
-      //System.err.println("    NORMAL MANGLING FOR " + binding.getName() +
-      //                   " = " + jniMangle(getName()));
+      writer.print(JavaEmitter.jniMangle(getImplName()));
     }
   }
 
@@ -990,7 +994,7 @@ public class CMethodBindingEmitter extends FunctionEmitter {
       // Call through function pointer
       writer.print(CMethodBindingEmitter.cThisArgumentName() + "->");
     }
-    writer.print(binding.getCSymbol().getOrigName()); // use original API name
+    writer.print(getNativeName());
     writer.print("(");
     emitBodyPassCArguments(writer);
     writer.println(");");
@@ -1166,7 +1170,7 @@ public class CMethodBindingEmitter extends FunctionEmitter {
 
   protected String jniMangle(final MethodBinding binding) {
     final StringBuilder buf = new StringBuilder();
-    buf.append(JavaEmitter.jniMangle(getName()));
+    buf.append(JavaEmitter.jniMangle(getImplName()));
     buf.append(getImplSuffix());
     buf.append("__");
     if (binding.hasContainingType()) {
@@ -1277,7 +1281,7 @@ public class CMethodBindingEmitter extends FunctionEmitter {
     writer.println("      (*env)->ThrowNew(env, (*env)->FindClass(env, \"java/lang/OutOfMemoryError\"),");
     writer.print("                       \"" + errorMessage);
     writer.print(" in native dispatcher for \\\"");
-    writer.print(getName());
+    writer.print(getInterfaceName());
     writer.println("\\\"\");");
     writer.print("      return");
     if (!binding.getJavaReturnType().isVoid()) {
diff --git a/src/java/com/jogamp/gluegen/FunctionEmitter.java b/src/java/com/jogamp/gluegen/FunctionEmitter.java
index 2009c9f..bfbb73b 100644
--- a/src/java/com/jogamp/gluegen/FunctionEmitter.java
+++ b/src/java/com/jogamp/gluegen/FunctionEmitter.java
@@ -49,7 +49,7 @@ public abstract class FunctionEmitter {
 
   public static final EmissionModifier STATIC = new EmissionModifier("static");
 
-  private final boolean isInterfaceVal;
+  private final boolean isInterface;
   private final ArrayList<EmissionModifier> modifiers;
   private CommentEmitter commentEmitter = null;
   private final PrintWriter defaultOutput;
@@ -61,7 +61,7 @@ public abstract class FunctionEmitter {
    */
   public FunctionEmitter(final PrintWriter defaultOutput, final boolean isInterface, final JavaConfiguration configuration)  {
     assert(defaultOutput != null);
-    this.isInterfaceVal = isInterface;
+    this.isInterface = isInterface;
     this.modifiers = new ArrayList<EmissionModifier>();
     this.defaultOutput = defaultOutput;
     this.cfg = configuration;
@@ -71,14 +71,14 @@ public abstract class FunctionEmitter {
    * Makes this FunctionEmitter a copy of the passed one.
    */
   public FunctionEmitter(final FunctionEmitter arg) {
-    isInterfaceVal = arg.isInterfaceVal;
+    isInterface = arg.isInterface;
     modifiers      = new ArrayList<EmissionModifier>(arg.modifiers);
     commentEmitter = arg.commentEmitter;
     defaultOutput  = arg.defaultOutput;
     cfg            = arg.cfg;
   }
 
-  public boolean isInterface() { return isInterfaceVal; }
+  public boolean isInterface() { return isInterface; }
 
   public PrintWriter getDefaultOutput() { return defaultOutput; }
 
@@ -97,7 +97,9 @@ public abstract class FunctionEmitter {
 
   public Iterator<EmissionModifier> getModifiers() { return modifiers.iterator(); }
 
-  public abstract String getName();
+  public abstract String getInterfaceName();
+  public abstract String getImplName();
+  public abstract String getNativeName();
 
   public abstract FunctionSymbol getCSymbol();
 
diff --git a/src/java/com/jogamp/gluegen/JavaConfiguration.java b/src/java/com/jogamp/gluegen/JavaConfiguration.java
index 32fb5cd..969eaaf 100644
--- a/src/java/com/jogamp/gluegen/JavaConfiguration.java
+++ b/src/java/com/jogamp/gluegen/JavaConfiguration.java
@@ -347,7 +347,7 @@ public class JavaConfiguration {
         }
         // Default access control is public
         return PUBLIC;
-  }
+    }
 
     /** Returns the package in which the generated glue code expects to
     find its run-time helper classes (Buffers, Platform,
@@ -510,6 +510,14 @@ public class JavaConfiguration {
   public boolean returnsString(final String functionName) {
     return returnsString.contains(functionName);
   }
+  /** Indicates whether the given function (which returns a
+      <code>char*</code> in C) should be translated as returning a
+      <code>java.lang.String</code>. */
+  public boolean returnsString(final AliasedSymbol symbol) {
+      return returnsString.contains( symbol.getName() ) ||
+             oneInSet(returnsString, symbol.getAliasedNames());
+  }
+
 
   /**
    * Returns a MessageFormat string of the Java expression calculating
@@ -1011,6 +1019,7 @@ public class JavaConfiguration {
       return false;
   }
 
+
   /**
    * Return a set of aliased-name for comment in docs.
    * <p>
diff --git a/src/java/com/jogamp/gluegen/JavaEmitter.java b/src/java/com/jogamp/gluegen/JavaEmitter.java
index c8a2da8..fa4ecab 100644
--- a/src/java/com/jogamp/gluegen/JavaEmitter.java
+++ b/src/java/com/jogamp/gluegen/JavaEmitter.java
@@ -98,8 +98,10 @@ public class JavaEmitter implements GlueEmitter {
       private final String javaName;
   }
 
-  private PrintWriter javaWriter; // Emits either interface or, in AllStatic mode, everything
+  private String javaFileName;        // of  javaWriter or javaImplWriter
+  private PrintWriter javaWriter;     // Emits either interface or, in AllStatic mode, everything
   private PrintWriter javaImplWriter; // Only used in non-AllStatic modes for impl class
+  private String cFileName;           // of cWriter
   private PrintWriter cWriter;
   private final MachineDataInfo machDescJava = MachineDataInfo.StaticConfig.LP64_UNIX.md;
   private final MachineDataInfo.StaticConfig[] machDescTargetConfigs = MachineDataInfo.StaticConfig.values();
@@ -508,8 +510,9 @@ public class JavaEmitter implements GlueEmitter {
                 LOG.log(INFO, cFunc.getASTLocusTag(), "Non-Ignored Intf[{0}]: {1}", i++, cFunc.getAliasedString());
             }
           } catch (final Exception e) {
-            throw new RuntimeException(
-                "Error while emitting binding for \"" + emitter.getName() + "\"", e);
+            throw new GlueGenException(
+                "Error while emitting binding for \"" + emitter.getCSymbol().getAliasedString() + "\"",
+                emitter.getCSymbol().getASTLocusTag(), e);
           }
         }
     }
@@ -571,8 +574,6 @@ public class JavaEmitter implements GlueEmitter {
           return;
       }
 
-      final PrintWriter writer = ((signatureOnly || cfg.allStatic()) ? javaWriter() : javaImplWriter());
-
       // It's possible we may not need a body even if signatureOnly is
       // set to false; for example, if the routine doesn't take any
       // arrays or buffers as arguments
@@ -593,6 +594,10 @@ public class JavaEmitter implements GlueEmitter {
       }
 
       final boolean emitBody = !signatureOnly && needsBody;
+      final boolean isNativeMethod = !isUnimplemented && !needsBody && !signatureOnly;
+
+      final PrintWriter writer = ((signatureOnly || cfg.allStatic()) ? javaWriter() : javaImplWriter());
+
       final JavaMethodBindingEmitter emitter =
               new JavaMethodBindingEmitter(binding,
                       writer,
@@ -607,7 +612,8 @@ public class JavaEmitter implements GlueEmitter {
                       false,           // forIndirectBufferAndArrayImplementation
                       isUnimplemented, // isUnimplemented
                       signatureOnly,   // isInterface
-                      false,           // isNativeMethod
+                      isNativeMethod,  // isNativeMethod
+                      false,           // isPrivateNativeMethod
                       cfg);
       switch (accessControl) {
           case PUBLIC:     emitter.addModifier(JavaMethodBindingEmitter.PUBLIC); break;
@@ -618,7 +624,7 @@ public class JavaEmitter implements GlueEmitter {
       if (cfg.allStatic()) {
           emitter.addModifier(FunctionEmitter.STATIC);
       }
-      if (!isUnimplemented && !needsBody && !signatureOnly) {
+      if (isNativeMethod) {
           emitter.addModifier(JavaMethodBindingEmitter.NATIVE);
       }
       emitter.setReturnedArrayLengthExpression(cfg.returnedArrayLength(binding.getName()));
@@ -685,6 +691,7 @@ public class JavaEmitter implements GlueEmitter {
                               false, // isUnimplemented
                               false, // isInterface
                               true,  // isNativeMethod
+                              true,  // isPrivateNativeMethod
                               cfg);
               emitter.addModifier(JavaMethodBindingEmitter.PRIVATE);
               if (cfg.allStatic()) {
@@ -760,7 +767,7 @@ public class JavaEmitter implements GlueEmitter {
 
     try {
       // Get Java binding for the function
-      final MethodBinding mb = bindFunction(sym, null, null, machDescJava);
+      final MethodBinding mb = bindFunction(sym, machDescJava, null, null);
 
       // JavaTypes representing C pointers in the initial
       // MethodBinding have not been lowered yet to concrete types
@@ -1401,7 +1408,7 @@ public class JavaEmitter implements GlueEmitter {
           final Type containingCType, final JavaType containingJType,
           final int i, final FunctionSymbol funcSym, final String returnSizeLookupName) {
       // Emit method call and associated native code
-      final MethodBinding  mb = bindFunction(funcSym, containingJType, containingCType, machDescJava);
+      final MethodBinding  mb = bindFunction(funcSym, machDescJava, containingJType, containingCType);
       mb.findThisPointer(); // FIXME: need to provide option to disable this on per-function basis
 
       // JavaTypes representing C pointers in the initial
@@ -1433,6 +1440,7 @@ public class JavaEmitter implements GlueEmitter {
                           false, // isUnimplemented
                           false, // isInterface
                           false, // isNativeMethod
+                          false, // isPrivateNativeMethod
                           cfg);
           emitter.addModifier(JavaMethodBindingEmitter.PUBLIC);
           emitter.emit();
@@ -1452,8 +1460,8 @@ public class JavaEmitter implements GlueEmitter {
                           false, // forIndirectBufferAndArrayImplementation
                           false, // isUnimplemented
                           false, // isInterface
-                          true,  // isNativeMethod
-                          cfg);
+                          false,  // isNativeMethod
+                          true, cfg);
           emitter.addModifier(JavaMethodBindingEmitter.PRIVATE);
           emitter.addModifier(JavaMethodBindingEmitter.NATIVE);
           emitter.emit();
@@ -1482,7 +1490,7 @@ public class JavaEmitter implements GlueEmitter {
           final int i, final FunctionSymbol funcSym,
           final String returnSizeLookupName, final String docArrayLenExpr, final String nativeArrayLenExpr) {
       // Emit method call and associated native code
-      final MethodBinding  mb = bindFunction(funcSym, containingJType, containingCType, machDescJava);
+      final MethodBinding  mb = bindFunction(funcSym, machDescJava, containingJType, containingCType);
       mb.findThisPointer(); // FIXME: need to provide option to disable this on per-function basis
 
       // JavaTypes representing C pointers in the initial
@@ -1515,6 +1523,7 @@ public class JavaEmitter implements GlueEmitter {
                           false,                  // isUnimplemented
                           true,                   // isInterface
                           true,                   // isNativeMethod
+                          true,                   // isPrivateNativeMethod
                           cfg);
           if( null != docArrayLenExpr ) {
               emitter.setReturnedArrayLengthExpression(docArrayLenExpr, true);
@@ -2367,13 +2376,16 @@ public class JavaEmitter implements GlueEmitter {
     }
 
     if (cfg.allStatic() || cfg.emitInterface()) {
-      javaWriter = openFile(jRoot + File.separator + cfg.className() + ".java", cfg.className());
+      javaFileName = jRoot + File.separator + cfg.className() + ".java";
+      javaWriter = openFile(javaFileName, cfg.className());
     }
     if (!cfg.allStatic() && cfg.emitImpl()) {
-      javaImplWriter = openFile(jImplRoot + File.separator + cfg.implClassName() + ".java", cfg.implClassName());
+      javaFileName = jImplRoot + File.separator + cfg.implClassName() + ".java";
+      javaImplWriter = openFile(javaFileName, cfg.implClassName());
     }
     if (cfg.emitImpl()) {
-      cWriter = openFile(nRoot + File.separator + cfg.implClassName() + "_JNI.c", cfg.implClassName());
+      cFileName = nRoot + File.separator + cfg.implClassName() + "_JNI.c";
+      cWriter = openFile(cFileName, cfg.implClassName());
     }
 
     if (javaWriter != null) {
@@ -2387,6 +2399,9 @@ public class JavaEmitter implements GlueEmitter {
     }
   }
 
+  /** For {@link #javaWriter} or {@link #javaImplWriter} */
+  protected String javaFileName() { return javaFileName; }
+
   protected PrintWriter javaWriter() {
     if (!cfg.allStatic() && !cfg.emitInterface()) {
       throw new InternalError("Should not call this");
@@ -2401,6 +2416,9 @@ public class JavaEmitter implements GlueEmitter {
     return javaImplWriter;
   }
 
+  /** For {@link #cImplWriter} */
+  protected String cFileName() { return cFileName; }
+
   protected PrintWriter cWriter() {
     if (!cfg.emitImpl()) {
       throw new InternalError("Should not call this");
@@ -2719,14 +2737,15 @@ public class JavaEmitter implements GlueEmitter {
       and must be lowered to concrete Java types before creating
       emitters for them. */
   private MethodBinding bindFunction(final FunctionSymbol sym,
+                                     final MachineDataInfo curMachDesc,
                                      final JavaType containingType,
-                                     final Type containingCType,
-                                     final MachineDataInfo curMachDesc) {
+                                     final Type containingCType) {
 
-    final MethodBinding binding = new MethodBinding(sym, containingType, containingCType);
     // System.out.println("bindFunction(0) "+sym.getReturnType());
+    final String name = sym.getName();
+    final JavaType javaReturnType;
 
-    if (cfg.returnsString(binding.getName())) {
+    if (cfg.returnsString(sym)) {
       final PointerType prt = sym.getReturnType().asPointer();
       if (prt == null ||
           prt.getTargetType().asInt() == null ||
@@ -2736,16 +2755,15 @@ public class JavaEmitter implements GlueEmitter {
           "\". ReturnsString requires native method to have return type \"char *\"",
           sym.getASTLocusTag());
       }
-      binding.setJavaReturnType(javaType(java.lang.String.class));
+      javaReturnType = javaType(java.lang.String.class);
     } else {
-      binding.setJavaReturnType(typeToJavaType(sym.getReturnType(), curMachDesc));
+      javaReturnType = typeToJavaType(sym.getReturnType(), curMachDesc);
     }
 
-    // System.out.println("bindFunction(1) "+binding.getJavaReturnType());
-
     // List of the indices of the arguments in this function that should be
     // converted from byte[] or short[] to String
-    final List<Integer> stringArgIndices = cfg.stringArguments(binding.getName());
+    final List<JavaType> javaArgumentTypes = new ArrayList<JavaType>();
+    final List<Integer> stringArgIndices = cfg.stringArguments(name);
 
     for (int i = 0; i < sym.getNumArguments(); i++) {
       final Type cArgType = sym.getArgumentType(i);
@@ -2780,14 +2798,15 @@ public class JavaEmitter implements GlueEmitter {
           sym.getASTLocusTag());
         }
       }
-      binding.addJavaArgumentType(mappedType);
+      javaArgumentTypes.add(mappedType);
       //System.out.println("During binding of [" + sym + "], added mapping from C type: " + cArgType + " to Java type: " + mappedType);
     }
-
-    // System.out.println("---> " + binding);
-    // System.out.println("    ---> " + binding.getCSymbol());
-    // System.out.println("bindFunction(3) "+binding);
-    return binding;
+    final MethodBinding mb = new MethodBinding(sym, delegationImplName,
+    final MethodBinding mb = new MethodBinding(sym, 
+                                               javaReturnType, javaArgumentTypes,
+                                               containingType, containingCType);
+    mangleBinding(mb);
+    return mb;
   }
 
   private MethodBinding lowerMethodBindingPointerTypes(final MethodBinding inputBinding,
@@ -2885,6 +2904,14 @@ public class JavaEmitter implements GlueEmitter {
     return result;
   }
 
+  /**
+   * Allow specializations to modify the given {@link MethodBinding}
+   * before {@link #expandMethodBinding(MethodBinding) expanding} and emission.
+   */
+  protected void mangleBinding(final MethodBinding binding) {
+      // NOP
+  }
+
   // Expands a MethodBinding containing C primitive pointer types into
   // multiple variants taking Java primitive arrays and NIO buffers, subject
   // to the per-function "NIO only" rule in the configuration file
diff --git a/src/java/com/jogamp/gluegen/JavaMethodBindingEmitter.java b/src/java/com/jogamp/gluegen/JavaMethodBindingEmitter.java
index c570016..c145ff5 100644
--- a/src/java/com/jogamp/gluegen/JavaMethodBindingEmitter.java
+++ b/src/java/com/jogamp/gluegen/JavaMethodBindingEmitter.java
@@ -67,22 +67,22 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
 
   protected final CommentEmitter defaultJavaCommentEmitter = new DefaultCommentEmitter();
   protected final CommentEmitter defaultInterfaceCommentEmitter = new InterfaceCommentEmitter();
+  protected final boolean tagNativeBinding;
+  protected final boolean useNIODirectOnly;
+  protected final MethodBinding binding;
 
   // Exception type raised in the generated code if runtime checks fail
   private final String runtimeExceptionType;
   private final String unsupportedExceptionType;
+  private final boolean useNIOOnly;
+  private final boolean isNativeMethod;
+  private final boolean isUnimplemented;
 
-  protected boolean emitBody;
-  protected boolean eraseBufferAndArrayTypes;
-  protected boolean useNIOOnly;
-  protected boolean useNIODirectOnly;
-  protected boolean isNativeMethod;
-  protected boolean forDirectBufferImplementation;
-  protected boolean forIndirectBufferAndArrayImplementation;
-  protected boolean isUnimplemented;
-  protected boolean tagNativeBinding;
-
-  protected MethodBinding binding;
+  private boolean emitBody;
+  private boolean eraseBufferAndArrayTypes;
+  private boolean isPrivateNativeMethod;
+  private boolean forDirectBufferImplementation;
+  private boolean forIndirectBufferAndArrayImplementation;
 
   // Manually-specified prologue and epilogue code
   protected List<String> prologue;
@@ -114,7 +114,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
                                   final boolean isUnimplemented,
                                   final boolean isInterface,
                                   final boolean isNativeMethod,
-                                  final JavaConfiguration configuration) {
+                                  final boolean isPrivateNativeMethod, final JavaConfiguration configuration) {
     super(output, isInterface, configuration);
     this.binding = binding;
     this.runtimeExceptionType = runtimeExceptionType;
@@ -128,7 +128,8 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
     this.forIndirectBufferAndArrayImplementation = forIndirectBufferAndArrayImplementation;
     this.isUnimplemented = isUnimplemented;
     this.isNativeMethod = isNativeMethod;
-    if (isNativeMethod) {
+    this.isPrivateNativeMethod = isPrivateNativeMethod;
+    if (isPrivateNativeMethod) {
       setCommentEmitter(defaultJavaCommentEmitter);
     } else {
       setCommentEmitter(defaultInterfaceCommentEmitter);
@@ -147,6 +148,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
     useNIOOnly                    = arg.useNIOOnly;
     useNIODirectOnly              = arg.useNIODirectOnly;
     isNativeMethod                = arg.isNativeMethod;
+    isPrivateNativeMethod         = arg.isPrivateNativeMethod;
     forDirectBufferImplementation = arg.forDirectBufferImplementation;
     forIndirectBufferAndArrayImplementation = arg.forIndirectBufferAndArrayImplementation;
     isUnimplemented               = arg.isUnimplemented;
@@ -158,13 +160,22 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
 
   public final MethodBinding getBinding() { return binding; }
 
-  public boolean isForNativeMethod() { return isNativeMethod; }
+  public boolean isNativeMethod() { return isNativeMethod; }
+  public boolean isPrivateNativeMethod() { return isPrivateNativeMethod; }
   public boolean isForDirectBufferImplementation() { return forDirectBufferImplementation; }
   public boolean isForIndirectBufferAndArrayImplementation() { return forIndirectBufferAndArrayImplementation; }
 
   @Override
-  public String getName() {
-    return binding.getName();
+  public String getInterfaceName() {
+    return binding.getInterfaceName();
+  }
+  @Override
+  public String getImplName() {
+    return binding.getImplName();
+  }
+  @Override
+  public String getNativeName() {
+    return binding.getNativeName();
   }
 
   @Override
@@ -237,8 +248,8 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
   }
 
   /** Accessor for subclasses. */
-  public void setForImplementingMethodCall(final boolean impl) {
-    this.isNativeMethod = impl;
+  public void setPrivateNativeMethod(final boolean v) {
+    this.isPrivateNativeMethod = v;
   }
 
   /** Accessor for subclasses. */
@@ -326,10 +337,12 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
 
   @Override
   protected void emitName(final PrintWriter writer)  {
-    if (isNativeMethod) {
-      writer.print(getNativeMethodName());
+    if (isPrivateNativeMethod) {
+      writer.print(getNativeImplMethodName());
+    } else if( isInterface()) {
+      writer.print(getInterfaceName());
     } else {
-      writer.print(getName());
+      writer.print(getImplName());
     }
   }
 
@@ -338,7 +351,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
     boolean needComma = false;
     int numEmitted = 0;
 
-    if (isNativeMethod  && binding.hasContainingType()) {
+    if (isPrivateNativeMethod  && binding.hasContainingType()) {
       // Always emit outgoing "this" argument
       writer.print("ByteBuffer ");
       writer.print(javaThisArgumentName());
@@ -399,8 +412,8 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
   }
 
 
-  protected String getNativeMethodName() {
-    return binding.getName() + ( useNIODirectOnly ? "0" : "1" );
+  protected String getNativeImplMethodName() {
+    return binding.getImplName() + ( useNIODirectOnly ? "0" : "1" );
   }
 
   protected String byteOffsetArgName(final int i) {
@@ -548,7 +561,7 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
   }
 
   protected void emitCall(final MethodBinding binding, final PrintWriter writer) {
-    writer.print(getNativeMethodName());
+    writer.print(getNativeImplMethodName());
     writer.print("(");
     emitCallArguments(binding, writer);
     writer.print(");");
@@ -679,9 +692,10 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
         } else if(type.isIntArray()) {
           writer.print(", Buffers.SIZEOF_INT * ");
         } else {
-          throw new RuntimeException("Unsupported type for calculating array offset argument for " +
+          throw new GlueGenException("Unsupported type for calculating array offset argument for " +
                                      getArgumentName(i) +
-                                     " -- error occurred while processing Java glue code for " + getName());
+                                     " -- error occurred while processing Java glue code for " + getCSymbol().getAliasedString(),
+                                     getCSymbol().getASTLocusTag());
         }
         writer.print(offsetArgName(i));
       }
@@ -692,7 +706,8 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
         }
       } else if (type.isPrimitiveArray()) {
         if (useNIOOnly) {
-            throw new RuntimeException("NIO[Direct]Only "+binding+" is set, but "+getArgumentName(i)+" is a primitive array");
+            throw new GlueGenException("NIO[Direct]Only "+binding+" is set, but "+getArgumentName(i)+" is a primitive array",
+                                       getCSymbol().getASTLocusTag());
         }
         writer.print( ", false");
       }
@@ -747,8 +762,9 @@ public class JavaMethodBindingEmitter extends FunctionEmitter {
           } else if (returnType.isNIOLongBuffer()) {
               writer.println("    return _res.asLongBuffer();");
           } else {
-            throw new RuntimeException("While emitting glue code for " + getName() +
-                                       ": can not legally make pointers opaque to anything but PointerBuffer or LongBuffer/long");
+            throw new GlueGenException("While emitting glue code for " + getCSymbol().getAliasedString() +
+                                       ": can not legally make pointers opaque to anything but PointerBuffer or LongBuffer/long",
+                                       getCSymbol().getASTLocusTag());
           }
         } else if (getBinding().getCReturnType().pointerDepth() == 1 && returnType.isNIOLongBuffer()) {
           writer.println("    return _res.asLongBuffer();");
diff --git a/src/java/com/jogamp/gluegen/MethodBinding.java b/src/java/com/jogamp/gluegen/MethodBinding.java
index 56b4fc8..5b0290a 100644
--- a/src/java/com/jogamp/gluegen/MethodBinding.java
+++ b/src/java/com/jogamp/gluegen/MethodBinding.java
@@ -43,7 +43,6 @@ import com.jogamp.gluegen.cgram.types.FunctionSymbol;
 import com.jogamp.gluegen.cgram.types.Type;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 
 /** Represents the binding of a C function to a Java method. Also used
@@ -53,6 +52,9 @@ import java.util.List;
 public class MethodBinding {
 
   private final FunctionSymbol sym;
+  private final JavaType containingType;
+  private final Type     containingCType;
+  private String         nativeName;
   private JavaType       javaReturnType;
   private List<JavaType> javaArgumentTypes;
   private boolean        computedSignatureProperties;
@@ -66,8 +68,6 @@ public class MethodBinding {
   private boolean        signatureUsesCArrays;
   private boolean        signatureUsesJavaPrimitiveArrays;
   private boolean        signatureRequiresStaticInitialization;
-  private JavaType       containingType;
-  private Type           containingCType;
   private int            thisPointerIndex = -1;
 
   /**
@@ -76,10 +76,11 @@ public class MethodBinding {
    * types. It's safe to modify this binding after construction.
    */
   public MethodBinding(final MethodBinding bindingToCopy) {
-    this.sym = bindingToCopy.sym;
-
+    this.sym                              = bindingToCopy.sym;
     this.containingType                   = bindingToCopy.containingType;
     this.containingCType                  = bindingToCopy.containingCType;
+
+    this.nativeName                       = bindingToCopy.nativeName;
     this.javaReturnType                   = bindingToCopy.javaReturnType;
     this.javaArgumentTypes                = ( null != bindingToCopy.javaArgumentTypes ) ? new ArrayList<JavaType>(bindingToCopy.javaArgumentTypes) : null;
     this.computedSignatureProperties      = bindingToCopy.computedSignatureProperties;
@@ -96,17 +97,25 @@ public class MethodBinding {
     this.thisPointerIndex                 = bindingToCopy.thisPointerIndex;
   }
 
-  /** Constructor for calling a C function. */
-  public MethodBinding(final FunctionSymbol sym) {
-    this.sym = sym;
-  }
-
-  /** Constructor for calling a function pointer contained in a
-      struct. */
-  public MethodBinding(final FunctionSymbol sym, final JavaType containingType, final Type containingCType) {
+  /**
+   * Constructor for calling a C function or a function pointer contained in a struct.
+   * <p>
+   * In case of the latter, a struct function pointer,
+   * the arguments {@code containingType} and {@code containingCType} must not be {@code null}!
+   * </p>
+   */
+  public MethodBinding(final FunctionSymbol sym,
+                       final JavaType javaReturnType,
+                       final List<JavaType> javaArgumentTypes,
+                       final JavaType containingType,
+                       final Type containingCType) {
     this.sym = sym;
     this.containingType = containingType;
     this.containingCType = containingCType;
+
+    this.nativeName = null;
+    this.javaReturnType = javaReturnType;
+    this.javaArgumentTypes = javaArgumentTypes;
   }
 
     public void setJavaReturnType(final JavaType type) {
@@ -142,6 +151,7 @@ public class MethodBinding {
         return sym.getArgumentType(i);
     }
 
+    /** Returns the {@link FunctionSymbol}. */
     public FunctionSymbol getCSymbol() {
         return sym;
     }
@@ -159,12 +169,30 @@ public class MethodBinding {
         return "arg" + i;
     }
 
-    public Collection<String> getAliasedNames() {
-        return sym.getAliasedNames();
-    }
+    /** Returns the {@link FunctionSymbol}'s current {@link FunctionSymbol#getName() aliased} API name. */
     public String getName() {
         return sym.getName();
     }
+    /** Returns the {@link FunctionSymbol}'s current {@link FunctionSymbol#getName() aliased} API name for the interface. */
+    public String getInterfaceName() {
+        return sym.getName();
+    }
+    /**
+     * Returns the {@link FunctionSymbol}'s name for the implementation,
+     * which is the current {@link FunctionSymbol#getName() aliased} API name per default.
+     */
+    public String getImplName() {
+        return sym.getName();
+    }
+    /**
+     * Returns the {@link FunctionSymbol}'s name for the native function
+     * which is the {@link FunctionSymbol#getOrigName() original} C API name per default,
+     * but may be overriden via {@link #setNativeName(String)}.
+     */
+    public String getNativeName() {
+        return null != nativeName ? nativeName : sym.getOrigName();
+    }
+    public void setNativeName(final String s) { nativeName = s; }
 
   /** Creates a new MethodBinding replacing the specified Java
       argument type with a new argument type. If argumentNumber is
diff --git a/src/java/com/jogamp/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java b/src/java/com/jogamp/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
index 57a50cc..37a39e1 100644
--- a/src/java/com/jogamp/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
+++ b/src/java/com/jogamp/gluegen/procaddress/ProcAddressCMethodBindingEmitter.java
@@ -66,11 +66,11 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
         super(
                 new MethodBinding(methodToWrap.getBinding()) {
                     @Override
-                    public String getName() {
+                    public String getImplName() {
                         if (callThroughProcAddress) {
-                            return ProcAddressEmitter.WRAP_PREFIX + super.getName();
+                            return ProcAddressEmitter.WRAP_PREFIX + super.getImplName();
                         } else {
-                            return super.getName();
+                            return super.getImplName();
                         }
                     }
                 },
@@ -121,7 +121,7 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
         if (callThroughProcAddress) {
             // create variable for the function pointer with the right type, and set
             // it to the value of the passed-in proc address
-            final FunctionSymbol cSym = getBinding().getCSymbol();
+            final FunctionSymbol cSym = binding.getCSymbol();
 
             // Always emit the local typedef, based on our parsing results.
             // In case we do have the public typedef from the original header,
@@ -145,7 +145,7 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
             writer.print("  ");
             writer.print(funcPointerTypedefName); // Uses public typedef if available!
             writer.print(" ptr_");
-            writer.print(cSym.getName());
+            writer.print(getNativeName());
             writer.println(";");
         }
 
@@ -158,10 +158,8 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
 
         if (callThroughProcAddress) {
             // set the function pointer to the value of the passed-in procAddress
-            final FunctionSymbol cSym = getBinding().getCSymbol();
-
             // See above notes in emitBodyVariableDeclarations(..)!
-            final String funcPointerTypedefBaseName = emitter.getFunctionPointerTypedefName(cSym);
+            final String funcPointerTypedefBaseName = emitter.getFunctionPointerTypedefName(binding.getCSymbol());
             final String funcPointerTypedefLocalName = "_local_" + funcPointerTypedefBaseName;
             final String funcPointerTypedefName;
             if (hasProcAddrTypedef) {
@@ -170,7 +168,7 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
                 funcPointerTypedefName = funcPointerTypedefLocalName;
             }
 
-            final String ptrVarName = "ptr_" + cSym.getName();
+            final String ptrVarName = "ptr_" + getNativeName();
 
             if (hasProcAddrTypedef) {
                 writer.println("  // implicit type validation of "+funcPointerTypedefLocalName+" -> "+funcPointerTypedefName);
@@ -214,7 +212,7 @@ public class ProcAddressCMethodBindingEmitter extends CMethodBindingEmitter {
 
             // call throught the run-time function pointer
             writer.print("(* ptr_");
-            writer.print(mBinding.getCSymbol().getName()); // use renamed base-name
+            writer.print(getNativeName());
             writer.print(") ");
             writer.print("(");
             emitBodyPassCArguments(writer);
diff --git a/src/java/com/jogamp/gluegen/procaddress/ProcAddressEmitter.java b/src/java/com/jogamp/gluegen/procaddress/ProcAddressEmitter.java
index 6418a53..25e5a66 100644
--- a/src/java/com/jogamp/gluegen/procaddress/ProcAddressEmitter.java
+++ b/src/java/com/jogamp/gluegen/procaddress/ProcAddressEmitter.java
@@ -204,16 +204,10 @@ public class ProcAddressEmitter extends JavaEmitter {
 
         // If this emitter doesn't have a body (i.e., is a direct native
         // call with no intervening argument processing), we need to force
-        // it to emit a body, and produce another one to act as the entry
-        // point
-        // FIXME: the negative test against the PRIVATE modifier is a
-        // nasty hack to prevent the ProcAddressJavaMethodBindingEmitter
-        // from incorrectly introducing method bodies to the private
-        // native implementing methods; want this to work at least for
-        // public and package-private methods
+        // it to emit a body, and produce another one to act as the entry point
         final boolean needsJavaWrapper = baseJavaEmitter.signatureOnly() &&
-                                        !baseJavaEmitter.hasModifier(JavaMethodBindingEmitter.PRIVATE) &&
-                                         baseJavaEmitter.hasModifier(JavaMethodBindingEmitter.NATIVE) &&
+                                         baseJavaEmitter.isNativeMethod() &&
+                                         !baseJavaEmitter.isPrivateNativeMethod() &&
                                          callThroughProcAddress;
 
 
@@ -221,7 +215,7 @@ public class ProcAddressEmitter extends JavaEmitter {
             final ProcAddressJavaMethodBindingEmitter emitter = new ProcAddressJavaMethodBindingEmitter(baseJavaEmitter,
                     callThroughProcAddress,
                     getProcAddressConfig().getProcAddressTableExpr(),
-                    baseJavaEmitter.isForNativeMethod(),
+                    baseJavaEmitter.isPrivateNativeMethod(),
                     this);
             if( needsJavaWrapper ) {
                 emitter.setEmitBody(true);
@@ -238,7 +232,7 @@ public class ProcAddressEmitter extends JavaEmitter {
                     getProcAddressConfig().getProcAddressTableExpr(),
                     true,
                     this);
-            emitter.setForImplementingMethodCall(true);
+            emitter.setPrivateNativeMethod(true);
             fixSecurityModifiers(emitter);
             emitters.add(emitter);
         }
diff --git a/src/java/com/jogamp/gluegen/procaddress/ProcAddressJavaMethodBindingEmitter.java b/src/java/com/jogamp/gluegen/procaddress/ProcAddressJavaMethodBindingEmitter.java
index f3cc8e9..3faf155 100644
--- a/src/java/com/jogamp/gluegen/procaddress/ProcAddressJavaMethodBindingEmitter.java
+++ b/src/java/com/jogamp/gluegen/procaddress/ProcAddressJavaMethodBindingEmitter.java
@@ -41,6 +41,7 @@ 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
@@ -76,12 +77,12 @@ public class ProcAddressJavaMethodBindingEmitter extends JavaMethodBindingEmitte
 
     public ProcAddressJavaMethodBindingEmitter(final ProcAddressJavaMethodBindingEmitter methodToWrap) {
         this(methodToWrap, methodToWrap.callThroughProcAddress, methodToWrap.getProcAddressTableExpr,
-                methodToWrap.changeNameAndArguments, methodToWrap.emitter);
+             methodToWrap.changeNameAndArguments, methodToWrap.emitter);
     }
 
     @Override
-    public String getName() {
-        final String res = super.getName();
+    public String getImplName() {
+        final String res = super.getImplName();
         if (changeNameAndArguments) {
             return ProcAddressEmitter.WRAP_PREFIX + res;
         }
@@ -106,8 +107,8 @@ public class ProcAddressJavaMethodBindingEmitter extends JavaMethodBindingEmitte
     }
 
     @Override
-    protected String getNativeMethodName() {
-        final String name = super.getNativeMethodName();
+    protected String getNativeImplMethodName() {
+        final String name = super.getNativeImplMethodName();
         if (callThroughProcAddress) {
             return ProcAddressEmitter.WRAP_PREFIX + name;
         }