Examples of org.jruby.Ruby

org.jruby.Ruby
The Ruby object represents the top-level of a JRuby "instance" in a given VM. JRuby supports spawning multiple instances in the same JVM. Generally, objects created under these instances are tied to a given runtime, for such details as identity and type, because multiple Ruby instances means there are multiple instances of each class. This means that in multi-runtime mode (or really, multi-VM mode, where each JRuby instance is a ruby "VM"), objects generally can't be transported across runtimes without marshaling. This class roots everything that makes the JRuby runtime function, and provides a number of utility methods for constructing global types and accessing global runtime structures.

    }
    
    public static IRubyObject defs(ThreadContext context, IRubyObject self, IRubyObject receiver, Object scriptObject, String name, String javaName, String[] scopeNames,
            int arity, int required, int optional, int rest, CallConfiguration callConfig) {
        Class compiledClass = scriptObject.getClass();
        Ruby runtime = context.getRuntime();


        RubyClass rubyClass = performSingletonMethodChecks(runtime, receiver, name);
        
        StaticScope scope = creatScopeForClass(context, scopeNames, required, optional, rest);
        
        MethodFactory factory = MethodFactory.createFactory(compiledClass.getClassLoader());
        DynamicMethod method = constructSingletonMethod(factory, rubyClass, javaName, arity, scope,scriptObject, callConfig);
        
        rubyClass.addMethod(name, method);
        
        callSingletonMethodHook(receiver,context, runtime.fastNewSymbol(name));
        
        return runtime.getNil();
    }

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        return rubyClass.fastGetClassVar(internedName);
    }
    
    public static IRubyObject getConstant(ThreadContext context, String internedName) {
        Ruby runtime = context.getRuntime();


        return context.getCurrentScope().getStaticScope().getConstantWithConstMissing(runtime, internedName, runtime.getObject());
    }

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        return re;
    }
    
    public static String getLocalJumpTypeOrRethrow(RaiseException re) {
        RubyException exception = re.getException();
        Ruby runtime = exception.getRuntime();
        if (runtime.getLocalJumpError().isInstance(exception)) {
            RubyLocalJumpError jumpError = (RubyLocalJumpError)re.getException();


            IRubyObject reason = jumpError.reason();


            return reason.asJavaString();

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        hash.fastASet(key3, value3);
        return hash;
    }
    
    public static IRubyObject defineAlias(ThreadContext context, String newName, String oldName) {
        Ruby runtime = context.getRuntime();
        RubyModule module = context.getRubyClass();
   
        if (module == null) throw runtime.newTypeError("no class to make alias");
   
        module.defineAlias(newName, oldName);
        module.callMethod(context, "method_added", runtime.newSymbol(newName));
   
        return runtime.getNil();
    }

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        IRubyObject tmp = value.checkArrayType();


        if (tmp.isNil()) {
            // Object#to_a is obsolete.  We match Ruby's hack until to_a goes away.  Then we can 
            // remove this hack too.
            Ruby runtime = value.getRuntime();
            
            if (value.getMetaClass().searchMethod("to_a").getImplementationClass() != runtime.getKernel()) {
                value = value.callMethod(runtime.getCurrentContext(), "to_a");
                if (!(value instanceof RubyArray)) throw runtime.newTypeError("`to_a' did not return Array");
                return (RubyArray)value;
            } else {
                return runtime.newArray(value);
            }
        }
        return (RubyArray)tmp;
    }

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        return JavaClass.getRubyArray(getRuntime(), javaClass().getClasses());
    }


    @JRubyMethod
    public RubyArray declared_classes() {
        Ruby runtime = getRuntime();
        RubyArray result = runtime.newArray();
        Class<?> javaClass = javaClass();
        try {
            Class<?>[] classes = javaClass.getDeclaredClasses();
            for (int i = 0; i < classes.length; i++) {
                if (Modifier.isPublic(classes[i].getModifiers())) {

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        System.arraycopy(original.getValue(), 0, newArray, 0, oldLength);
        RubyClass proxyClass = (RubyClass)Java.get_proxy_class(javaArray, array_class());
        ArrayJavaProxy proxy = new ArrayJavaProxy(context.getRuntime(), proxyClass);
        proxy.dataWrapStruct(javaArray);
        
        Ruby runtime = context.getRuntime();
        for (int i = 0; i < addLength; i++) {
            RuntimeHelpers.invoke(context, proxy, "[]=", runtime.newFixnum(oldLength + i), 
                    RuntimeHelpers.invoke(context, additional, "[]", runtime.newFixnum(i)));
        }


        return proxy;
    }

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        return proxy;
    }


    public IRubyObject javaArrayFromRubyArray(ThreadContext context, IRubyObject fromArray) {
        Ruby runtime = context.getRuntime();
        if (!(fromArray instanceof RubyArray)) {
            throw runtime.newTypeError(fromArray, runtime.getArray());
        }
        RubyArray rubyArray = (RubyArray)fromArray;
        JavaArray javaArray = new JavaArray(getRuntime(), Array.newInstance(javaClass(), rubyArray.size()));
        
        if (javaClass().isArray()) {

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    }


    @JRubyMethod(required = 1)
    public JavaField field(ThreadContext context, IRubyObject name) {
        Class<?> javaClass = javaClass();
        Ruby runtime = context.getRuntime();
        String stringName = name.asJavaString();


        try {
            return new JavaField(runtime, javaClass.getField(stringName));
        } catch (NoSuchFieldException nsfe) {

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    }


    @JRubyMethod(required = 1)
    public JavaField declared_field(ThreadContext context, IRubyObject name) {
        Class<?> javaClass = javaClass();
        Ruby runtime = context.getRuntime();
        String stringName = name.asJavaString();
        
        try {
            return new JavaField(runtime, javaClass.getDeclaredField(stringName));
        } catch (NoSuchFieldException nsfe) {

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