Examples of org.jruby.RubyObject$Data

org.jruby.RubyObject
RubyObject is the only implementation of the {@link org.jruby.runtime.builtin.IRubyObject}. Every Ruby object in JRuby is represented by something that is an instance of RubyObject. In some of the core class implementations, this means doing a subclass that extends RubyObject, in other cases it means using a simple RubyObject instance and the data field to store specific information about the Ruby object. Some care has been taken to make the implementation be as monomorphic as possible, so that the Java Hotspot engine can improve performance of it. That is the reason for several patterns that might seem odd in this class. The IRubyObject interface used to have lots of methods for different things, but these have now mostly been refactored into several interfaces that gives access to that specific part of the object. This gives us the possibility to switch out that subsystem without changing interfaces again. For example, instance variable and internal variables are handled this way, but the implementation in RubyObject only returns "this" in {@link #getInstanceVariables()} and{@link #getInternalVariables()}. @author jpetersen

            } else if (type == Short.class) {
                return new Short(number.shortValue());
            }
        }
        if (isDuckTypeConvertable(argument.getClass(), parameterType)) {
            RubyObject rubyObject = (RubyObject) argument;
            if (!rubyObject.respondsTo("java_object")) {
                return convertProcToInterface(runtime.getCurrentContext(), rubyObject, parameterType);
            }
        }
        return argument;
    }

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        }
    }
    
    public static Object coerceJavaObjectToType(ThreadContext context, Object javaObject, Class target) {
        if (javaObject != null && isDuckTypeConvertable(javaObject.getClass(), target)) {
            RubyObject rubyObject = (RubyObject) javaObject;
            if (!rubyObject.respondsTo("java_object")) {
                return convertProcToInterface(context, rubyObject, target);
            }


            // can't be converted any more, return it
            return javaObject;

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    public static Object coerceOtherToType(ThreadContext context, IRubyObject arg, Class target) {
        Ruby runtime = context.getRuntime();
        
        if (isDuckTypeConvertable(arg.getClass(), target)) {
            RubyObject rubyObject = (RubyObject) arg;
            if (!rubyObject.respondsTo("java_object")) {
                return convertProcToInterface(context, rubyObject, target);
            }
        } else if (arg.respondsTo("to_java_object")) {
            Object javaObject = arg.callMethod(context, "to_java_object");
            if (javaObject instanceof JavaObject) {

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                final RubyHash vars = (RubyHash)(((JRubyConstructor)ctor).constructRubyMapping(node));
                return RuntimeHelpers.invoke(runtime.getCurrentContext(), objClass, "new", runtime.newString(tag), vars);
            }
        }
        final RubyClass theCls = (RubyClass)objClass;
        final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
        final Map vars = (Map)(ctor.constructMapping(node));
        ctor.doRecursionFix(node, oo);
        for(final Iterator iter = vars.keySet().iterator();iter.hasNext();) {
            final IRubyObject key = (IRubyObject)iter.next();
            final Object val = vars.get(key);
            if(val instanceof LinkNode) {
                final String KEY = "@" + key.toString();
                ctor.addFixer((Node)(((LinkNode)val).getValue()), new RecursiveFixer() {
                        public void replace(Node node, Object real) {
                            oo.setInstanceVariable(KEY,(IRubyObject)real);
                        }
                    });
            } else {
                oo.setInstanceVariable("@" + key.toString(),(IRubyObject)val);
            }
        }
        return oo;
    }

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        final Ruby runtime = ((JRubyConstructor)ctor).runtime;
        if(theCls.respondsTo("yaml_new")) {
            final RubyHash vars = (RubyHash)(((JRubyConstructor)ctor).constructRubyMapping(node));
            return RuntimeHelpers.invoke(runtime.getCurrentContext(), theCls, "yaml_new", theCls, runtime.newString(node.getTag()), vars);
        } else {
            final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
            if (oo.respondsTo("yaml_initialize")) {
                RubyHash vars = (RubyHash)(((JRubyConstructor)ctor).constructRubyMapping(node));
                RuntimeHelpers.invoke(runtime.getCurrentContext(), oo, "yaml_initialize", runtime.newString(node.getTag()), vars);
            } else {
                final Map vars = (Map)(ctor.constructMapping(node));
                ctor.doRecursionFix(node, oo);
                for(final Iterator iter = vars.keySet().iterator();iter.hasNext();) {
                    final IRubyObject key = (IRubyObject)iter.next();
                    final Object val = vars.get(key);
                    if(val instanceof LinkNode) {
                        final String KEY = "@" + key.toString();
                        ctor.addFixer((Node)(((LinkNode)val).getValue()), new RecursiveFixer() {
                                public void replace(Node node, Object real) {
                                    oo.setInstanceVariable(KEY,(IRubyObject)real);
                                }
                            });
                    } else {
                        oo.setInstanceVariable("@" + key.toString(),(IRubyObject)val);
                    }
                }
            }
            return oo;
        }

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            for(int i=0,j=nms.length;i<j;i++) {
                objClass = (RubyModule)objClass.getConstant(nms[i]);
            }
        }
        final RubyClass theCls = (RubyClass)objClass;
        final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
        final IRubyObject val = (IRubyObject)constructYamlInt(ctor, node);
        oo.callInit(new IRubyObject[]{val},org.jruby.runtime.Block.NULL_BLOCK);
        return oo;
    }

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    }


    @JRubyMethod(name = "new", rest = true, frame = true, meta = true)
    public static IRubyObject new_instance(IRubyObject self, IRubyObject[] args, Block block) {
        // Generator#new
        IRubyObject result = new RubyObject(self.getRuntime(),(RubyClass)self);
        result.dataWrapStruct(new GeneratorData(result));
        result.callMethod(self.getRuntime().getCurrentContext(), "initialize", args, block);
        return result;
    }

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            for(int i=0,j=nms.length;i<j;i++) {
                objClass = (RubyModule)objClass.getConstant(nms[i]);
            }
        }
        final RubyClass theCls = (RubyClass)objClass;
        final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
        final IRubyObject val = (IRubyObject)constructYamlStr(ctor, node);
        oo.callInit(new IRubyObject[]{val},org.jruby.runtime.Block.NULL_BLOCK);
        return oo;
    }

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            for(int i=0,j=nms.length;i<j;i++) {
                objClass = (RubyModule)objClass.getConstant(nms[i]);
            }
        }
        final RubyClass theCls = (RubyClass)objClass;
        final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
        final Map vars = (Map)(ctor.constructMapping(node));
        for(final Iterator iter = vars.keySet().iterator();iter.hasNext();) {
            final IRubyObject key = (IRubyObject)iter.next();
            RuntimeHelpers.invoke(oo.getRuntime().getCurrentContext(), oo, "[]=", key, (IRubyObject)vars.get(key));
        }
        return oo;
    }

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            for(int i=0,j=nms.length;i<j;i++) {
                objClass = (RubyModule)objClass.getConstant(nms[i]);
            }
        }
        final RubyClass theCls = (RubyClass)objClass;
        final RubyObject oo = (RubyObject)theCls.getAllocator().allocate(runtime, theCls);
        final List vars = (List)(ctor.constructSequence(node));
        for(final Iterator iter = vars.iterator();iter.hasNext();) {
            RuntimeHelpers.invoke(oo.getRuntime().getCurrentContext(), oo, "<<", (IRubyObject)iter.next());
        }
        return oo;
    }

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