GlueGen Struct [2]: Add CodeUnit: Representing a generated C or Java file, covering multiple FunctionEmitter allowing to unify output, decoration and dynamic helper code injection per unit

- Handles file open and have public ctor emitAutogeneratedWarning(..), being self-contained

- Includes `JVMUtil_NewDirectByteBufferCopy(..)` implementation in CCodeUnit,
  may be injected if required in customCode via emitHeader(..)

1 files changed, 58 insertions, 0 deletions

diff --git a/src/java/com/jogamp/gluegen/JavaCodeUnit.java b/src/java/com/jogamp/gluegen/JavaCodeUnit.java
new file mode 100644
index 0000000..5010584
--- /dev/null
+++ b/src/java/com/jogamp/gluegen/JavaCodeUnit.java
@@ -0,0 +1,58 @@
+/**
+ * Copyright 2023 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:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.gluegen;
+
+import java.io.IOException;
+
+/**
+ * Java code unit (a generated Java source file),
+ * covering multiple {@link FunctionEmitter} allowing to unify output, decoration and dynamic helper code injection per unit.
+ **/
+public class JavaCodeUnit extends CodeUnit {
+    /** Package name of this Java unit */
+    public final String pkgName;
+    /** Simple class name of this Java unit */
+    public final String className;
+
+    /**
+     * @param filename the class's full filename to open w/ write access
+     * @param packageName the package name of the class
+     * @param simpleClassName the simple class name, i.e. w/o package name or c-file basename
+     * @param generator informal optional object that is creating this unit, used to be mentioned in a warning message if not null.
+     * @throws IOException
+     */
+    public JavaCodeUnit(final String filename, final String packageName, final String simpleClassName, final Object generator) throws IOException {
+        super(filename, generator);
+        this.pkgName = packageName;
+        this.className = simpleClassName;
+        CodeGenUtils.emitAutogeneratedWarning(output, generator, "Java-Unit: [pkg "+packageName+", cls "+simpleClassName+"], "+filename);
+    }
+
+    @Override
+    public String toString() { return "JavaCodeUnit[unit "+pkgName+"."+className+", file "+filename+"]"; }
+}