/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.vm4brwsr;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

class VMLazy extends ByteCodeToJavaScript {

    private final Object vm;

    private final Object global;

    private VMLazy(Object global, Object vm, Appendable out) {

        super(out);

        this.vm = vm;

        this.global = global;

    }

    static String toJavaScript(Object global, Object vm, byte[] is) throws IOException {

        StringBuilder sb = new StringBuilder();

        new VMLazy(global, vm, sb).compile(new ByteArrayInputStream(is));

        return sb.toString().toString();

    }

    @JavaScriptBody(args = { "self", "n" }, 

        body=

          "var cls = n.replace__Ljava_lang_String_2CC(n,'/','_').toString();"

        + "var glb = self.fld_global;"

        + "var vm = self.fld_vm;"

        + "if (glb[cls]) return false;"

        + "glb[cls] = function() {"

        + "  return vm.loadClass(n,cls);"

        + "};"

        + "return true;"

    )

    @Override

    protected boolean requireReference(String internalClassName) {

        throw new UnsupportedOperationException();

    }

    @Override

    protected void requireScript(String resourcePath) {

    }

    @Override

    protected String assignClass(String className) {

        return "arguments[0][arguments[1]]=";

    }

}