jaroslav@170: /**
jaroslav@170:  * Back 2 Browser Bytecode Translator
jaroslav@170:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@170:  *
jaroslav@170:  * This program is free software: you can redistribute it and/or modify
jaroslav@170:  * it under the terms of the GNU General Public License as published by
jaroslav@170:  * the Free Software Foundation, version 2 of the License.
jaroslav@170:  *
jaroslav@170:  * This program is distributed in the hope that it will be useful,
jaroslav@170:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@170:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@170:  * GNU General Public License for more details.
jaroslav@170:  *
jaroslav@170:  * You should have received a copy of the GNU General Public License
jaroslav@170:  * along with this program. Look for COPYING file in the top folder.
jaroslav@170:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@170:  */
jaroslav@170: package org.apidesign.vm4brwsr;
jaroslav@170: 
jaroslav@170: import java.io.ByteArrayInputStream;
jaroslav@170: import java.io.IOException;
jaroslav@214: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@170: 
jaroslav@170: /**
jaroslav@170:  *
jaroslav@170:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@170:  */
jaroslav@201: class VMLazy extends ByteCodeToJavaScript {
jaroslav@214:     private final Object vm;
jaroslav@214:     private final Object global;
jaroslav@214:     
jaroslav@214:     private VMLazy(Object global, Object vm, Appendable out) {
jaroslav@170:         super(out);
jaroslav@214:         this.vm = vm;
jaroslav@214:         this.global = global;
jaroslav@170:     }
jaroslav@170:     
jaroslav@214:     static String toJavaScript(Object global, Object vm, byte[] is) throws IOException {
jaroslav@170:         StringBuilder sb = new StringBuilder();
jaroslav@214:         new VMLazy(global, vm, sb).compile(new ByteArrayInputStream(is));
jaroslav@170:         return sb.toString().toString();
jaroslav@170:     }
jaroslav@170: 
jaroslav@214:     @JavaScriptBody(args = { "self", "n" }, 
jaroslav@214:         body=
jaroslav@214:           "var cls = n.replaceLjava_lang_StringCC(n,'/','_').toString();"
jaroslav@214:         + "var glb = self.fld_global;"
jaroslav@214:         + "var vm = self.fld_vm;"
jaroslav@214:         + "if (glb[cls]) return false;"
jaroslav@214:         + "glb[cls] = function() {"
jaroslav@214:         + "  return vm.loadClass(n,cls);"
jaroslav@214:         + "};"
jaroslav@214:         + "return true;"
jaroslav@214:     )
jaroslav@170:     @Override
jaroslav@170:     protected boolean requireReference(String internalClassName) {
jaroslav@214:         throw new UnsupportedOperationException();
jaroslav@170:     }
jaroslav@170: 
jaroslav@170:     @Override
jaroslav@170:     protected void requireScript(String resourcePath) {
jaroslav@170:     }
jaroslav@213: 
jaroslav@213:     @Override
jaroslav@213:     protected String assignClass(String className) {
jaroslav@213:         return "arguments[0][arguments[1]]=";
jaroslav@213:     }
jaroslav@170: }