Package org.lwjgl.util.generator.opencl

Source Code of org.lwjgl.util.generator.opencl.CLCapabilitiesGenerator

/*
* Copyright (c) 2002-2008 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
*   notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of 'LWJGL' nor the names of
*   its contributors may be used to endorse or promote products derived
*   from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT OWNER 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.
*/

package org.lwjgl.util.generator.opencl;

import org.lwjgl.util.generator.*;

import java.io.PrintWriter;
import java.util.Collection;
import java.util.Iterator;

import com.sun.mirror.declaration.InterfaceDeclaration;
import com.sun.mirror.declaration.MethodDeclaration;
import com.sun.mirror.declaration.TypeDeclaration;

/**
* CLCapabilities generator.
*
* @author Spasi
*/
public class CLCapabilitiesGenerator {

  static void generateClassPrologue(final PrintWriter writer) {
    writer.println("public final class " + CLGeneratorProcessorFactory.CLCAPS_CLASS_NAME + " {");
    writer.println();
  }

  static void generateSymbolAddresses(final PrintWriter writer, final InterfaceDeclaration d) {
    final Alias alias_annotation = d.getAnnotation(Alias.class);
    final boolean aliased = alias_annotation != null && alias_annotation.postfix().length() > 0;

    boolean foundNative = false;
    for ( final MethodDeclaration method : d.getMethods() ) {
      if ( method.getAnnotation(Alternate.class) != null || method.getAnnotation(Reuse.class) != null )
        continue;

      if ( !foundNative ) {
        //writer.println("\t// " + d.getSimpleName());
        writer.println("\tstatic final boolean " + CLGeneratorProcessorFactory.getExtensionName(d.getSimpleName()) + ";");
        foundNative = true;
      }
      writer.print("\tstatic final long " + Utils.getFunctionAddressName(d, method) + " = CL.getFunctionAddress(");

      if ( aliased )
        writer.println("new String [] {\"" + Utils.getFunctionAddressName(d, method) + "\",\"" + method.getSimpleName() + alias_annotation.postfix() + "\"});");
      else
        writer.println("\"" + Utils.getFunctionAddressName(d, method) + "\");");
    }

    if ( foundNative )
      writer.println();
  }

  static void generateConstructor(final PrintWriter writer, final Collection<TypeDeclaration> interface_decls) {
    writer.println("\tprivate " + CLGeneratorProcessorFactory.CLCAPS_CLASS_NAME + "() {}");
    writer.println();
    writer.println("\tstatic {");

    for ( final TypeDeclaration d : interface_decls ) {
      if ( d.getMethods().isEmpty() )
        continue;

      //writer.println("\t\tif ( " + getExtensionSupportedName(d.getSimpleName()) + "() )");
      //writer.println("\t\t\t" + SUPPORTED_EXTS + ".add(\"" + CLGeneratorProcessorFactory.getExtensionName(d.getSimpleName()) + "\");");
      writer.println("\t\t" + CLGeneratorProcessorFactory.getExtensionName(d.getSimpleName()) + " = " + getExtensionSupportedName(d.getSimpleName()) + "();");
    }

    writer.println("\t}\n");
  }

  static void generateExtensionChecks(final PrintWriter writer, final InterfaceDeclaration d) {
    Iterator<? extends MethodDeclaration> methods = d.getMethods().iterator();
    if ( !methods.hasNext() )
      return;

    writer.println("\tprivate static boolean " + getExtensionSupportedName(d.getSimpleName()) + "() {");
    writer.println("\t\treturn ");

    boolean first = true;
    while ( methods.hasNext() ) {
      MethodDeclaration method = methods.next();
      if ( method.getAnnotation(Alternate.class) != null )
        continue;

      if ( !first )
        writer.println(" &");
      else
        first = false;

      final boolean optional = method.getAnnotation(Optional.class) != null;

      writer.print("\t\t\t");
      if ( optional )
        writer.print('(');
      writer.print(Utils.getFunctionAddressName(d, method) + " != 0");
      if ( optional )
        writer.print(" || true)");
    }
    writer.println(";");
    writer.println("\t}");
    writer.println();
  }

  private static String getExtensionSupportedName(final String class_name) {
    return "is" + class_name + "Supported";
  }

  public static void generateCapabilitiesGetters(final PrintWriter writer) {
    writer.println("\tpublic static CLPlatformCapabilities getPlatformCapabilities(final CLPlatform platform) {\n" +
                   "\t\tplatform.checkValid();\n" +
                   "\n" +
                   "\t\tCLPlatformCapabilities caps = (CLPlatformCapabilities)platform.getCapabilities();\n" +
                   "\t\tif ( caps == null )\n" +
                   "\t\t\tplatform.setCapabilities(caps = new CLPlatformCapabilities(platform));\n" +
                   "\n" +
                   "\t\treturn caps;\n" +
                   "\t}\n");

    writer.println("\tpublic static CLDeviceCapabilities getDeviceCapabilities(final CLDevice device) {\n" +
                   "\t\tdevice.checkValid();\n" +
                   "\n" +
                   "\t\tCLDeviceCapabilities caps = (CLDeviceCapabilities)device.getCapabilities();\n" +
                   "\t\tif ( caps == null )\n" +
                   "\t\t\tdevice.setCapabilities(caps = new CLDeviceCapabilities(device));\n" +
                   "\n" +
                   "\t\treturn caps;\n" +
                   "\t}\n");

  }
}
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