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package org.snapscript.tree.dispatch;

import java.util.List;
import java.util.concurrent.Callable;

import org.snapscript.core.Context;
import org.snapscript.core.Module;
import org.snapscript.core.Scope;
import org.snapscript.core.Value;
import org.snapscript.core.bind.FunctionBinder;
import org.snapscript.core.error.ErrorHandler;
import org.snapscript.tree.NameReference;
import org.snapscript.tree.collection.ArrayBuilder;

public class ArrayDispatcher implements InvocationDispatcher {
   
   private final NameReference reference;
   private final ArrayBuilder builder;
   
   public ArrayDispatcher(NameReference reference) {
      this.builder = new ArrayBuilder();
      this.reference = reference;
   }

   @Override
   public Value dispatch(Scope scope, Object object, Object... arguments) throws Exception {
      Module module = scope.getModule();
      Context context = module.getContext();
      FunctionBinder binder = context.getBinder();
      List list = builder.convert(object);
      String name = reference.getName(scope);
      Callable call = binder.bind(scope, list, name, arguments);
      
      if(call == null) {
         ErrorHandler handler = context.getHandler();
         handler.throwInternalException(scope, object, name, arguments);
      }
      return call.call();
   }
}    

    

    
            
    
            







    
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