package org.webslinger.ext.bsf.javaclass;

 import org.apache.bsf.BSFException;

 import org.webslinger.bsf.ApplyKey;

 import org.webslinger.bsf.Compiler;

 import org.webslinger.bsf.EvalKey;

 import org.webslinger.bsf.ExecKey;

 import org.webslinger.bsf.Key;

 import org.webslinger.bsf.janino.AbstractJaninoCompiler;

 public final class JavaclassCompiler extends AbstractJaninoCompiler<Object, Class<Object>> {

     protected interface Call {

         Object call(Object object, Object[] args) throws Exception;

     }

     public JavaclassCompiler(JavaclassEngine engine) {

         super(engine);

         implementsMap.put(JavaclassCallKey.class, Call.class);

     }

     public Class<Object> compileKey(ApplyKey<Class<Object>> key, JaninoCompilerContext context) throws BSFException {

         throw new BSFException(BSFException.REASON_UNSUPPORTED_FEATURE, "compileApply");

     }

     public <V> Class<Object> compileKey(JavaclassCallKey key, Compiler<V, Class<Object>>.CompilerContext context) throws BSFException {

         StringBuilder code = context.code;

         code.append("\tpublic Object call(Object object, Object[] args) throws Exception {\n");

         code.append("\t\t");

         if (key.hasType()) code.append("return org.codehaus.janino.util.PrimitiveWrapper.wrap(");

         code.append("((").append(key.getType().getName()).append(") object).").append(key.getName()).append("(");

         Class[] types = key.getTypes();

         for (int i = 0; i < types.length; i++) {

             code.append(i != 0 ? ",\n" : "\n");

             code.append("\t\t\t(").append(types[i].getName()).append(") args[").append(i).append("]");

         }

         if (types.length != 0) code.append("\n\t\t");

         code.append(')');

         if (key.hasType()) code.append(')');

         code.append(";\n");

         if (!key.hasType()) code.append("\treturn null;\n");

         code.append("\t}\n");

         return null;

     }

     public Class<Object> compileKey(EvalKey<Class<Object>> key, JaninoCompilerContext context) throws BSFException {

         throw new BSFException(BSFException.REASON_UNSUPPORTED_FEATURE, "compileEval");

     }

     public Class<Object> compileKey(ExecKey<Class<Object>> key, JaninoCompilerContext context) throws BSFException {

         throw new BSFException(BSFException.REASON_UNSUPPORTED_FEATURE, "compileExec");

     }

     public <V> Class<Object> compileKey(JavaclassObjectKey key, Compiler<V, Class<Object>>.CompilerContext context) throws BSFException {

         appendText(context.code, "\t\t", context.text);

         return null;

     }

 }