Package org.jruby.javasupport

Examples of org.jruby.javasupport.JavaCallable

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        return method;
    }

    public static JavaCallable matchingCallableArityThree(Map cache, JavaCallable[] methods, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2) {
        int signatureCode = argsHashCode(arg0, arg1, arg2);
        JavaCallable method = (JavaCallable)cache.get(signatureCode);
        if (method == null) {
            method = (JavaCallable)findMatchingCallableForArgs(cache, signatureCode, methods, arg0, arg1, arg2);
        }
        return method;
    }
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        return method;
    }

    public static JavaCallable matchingCallableArityFour(Map cache, JavaCallable[] methods, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, IRubyObject arg3) {
        int signatureCode = argsHashCode(arg0, arg1, arg2, arg3);
        JavaCallable method = (JavaCallable)cache.get(signatureCode);
        if (method == null) {
            method = (JavaCallable)findMatchingCallableForArgs(cache, signatureCode, methods, arg0, arg1, arg2, arg3);
        }
        return method;
    }
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        setArity(Arity.OPTIONAL);

        Ruby runtime = host.getRuntime();

        // initialize all the callables for this method
        JavaCallable callable = null;
        JavaCallable[][] callables = null;
        JavaCallable[] varargsCallables = null;
        int varargsArity = Integer.MAX_VALUE;
       
        if (members.length == 1) {
            callable = createCallable(runtime, members[0]);
            if (callable.isVarArgs()) {
                varargsCallables = createCallableArray(callable);
            }
        } else {
            Map<Integer, List<JavaCallable>> methodsMap = new HashMap<Integer, List<JavaCallable>>();
            List<JavaCallable> varargsMethods = new ArrayList();
            int maxArity = 0;
            for (Member method: members) {
                int currentArity = getMemberParameterTypes(method).length;
                maxArity = Math.max(currentArity, maxArity);
                List<JavaCallable> methodsForArity = methodsMap.get(currentArity);
                if (methodsForArity == null) {
                    methodsForArity = new ArrayList<JavaCallable>();
                    methodsMap.put(currentArity,methodsForArity);
                }
                JavaCallable javaMethod = createCallable(runtime,method);
                methodsForArity.add(javaMethod);

                if (isMemberVarArgs(method)) {
                    varargsArity = Math.min(currentArity - 1, varargsArity);
                    varargsMethods.add(javaMethod);
                }
            }

            callables = createCallableArrayArray(maxArity + 1);
            for (Map.Entry<Integer,List<JavaCallable>> entry : methodsMap.entrySet()) {
                List<JavaCallable> methodsForArity = (List<JavaCallable>)entry.getValue();

                JavaCallable[] methodsArray = methodsForArity.toArray(createCallableArray(methodsForArity.size()));
                callables[((Integer)entry.getKey()).intValue()] = methodsArray;
            }

            if (varargsMethods.size() > 0) {
                // have at least one varargs, build that map too
                varargsCallables = createCallableArray(varargsMethods.size());
                varargsMethods.toArray(varargsCallables);
            }
        }
        members = null;

        // initialize cache of parameter types to method
        // FIXME: No real reason to use CHM, is there?
        cache = new ConcurrentHashMap(0, 0.75f, 1);

        this.javaCallable = callable;
        this.javaCallables = callables;
        this.javaVarargsCallables = varargsCallables;
        this.minVarargsArity = varargsArity;
       
        // if it's not overloaded, set up a NativeCall
        if (javaCallable != null) {
            // no constructor support yet
            if (javaCallable instanceof org.jruby.javasupport.JavaMethod) {
                org.jruby.javasupport.JavaMethod javaMethod = (org.jruby.javasupport.JavaMethod)javaCallable;
                Method method = (Method)javaMethod.getValue();
                // only public, since non-public don't bind
                if (Modifier.isPublic(method.getModifiers()) && Modifier.isPublic(method.getDeclaringClass().getModifiers())) {
                    setNativeCall(method.getDeclaringClass(), method.getName(), method.getReturnType(), method.getParameterTypes(), Modifier.isStatic(method.getModifiers()), true);
                }
            }
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        }
        throw proxy.getRuntime().newArgumentError("no " + name + " with arguments matching " + Arrays.toString(argTypes) + " on object " + proxy.getMetaClass());
    }

    protected JavaCallable findCallable(IRubyObject self, String name, IRubyObject[] args, int arity) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            JavaCallable[] callablesForArity = null;
            if (arity >= javaCallables.length || (callablesForArity = javaCallables[arity]) == null) {
                if (javaVarargsCallables != null) {
                    callable = CallableSelector.matchingCallableArityN(runtime, cache, javaVarargsCallables, args, arity);
                    if (callable == null) {
                        throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, javaVarargsCallables, (Object[])args);
                    }
                    return callable;
                } else {
                    throw self.getRuntime().newArgumentError(args.length, javaCallables.length - 1);
                }
            }
            callable = CallableSelector.matchingCallableArityN(runtime, cache, callablesForArity, args, arity);
            if (callable == null && javaVarargsCallables != null) {
                callable = CallableSelector.matchingCallableArityN(runtime, cache, javaVarargsCallables, args, arity);
                if (callable == null) {
                    throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, javaVarargsCallables, (Object[])args);
                }
                return callable;
            }
            if (callable == null) {
                throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, callablesForArity, (Object[])args);
            }
        } else {
            if (!callable.isVarArgs() && callable.getParameterTypes().length != args.length) {
                throw self.getRuntime().newArgumentError(args.length, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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        }
        return callable;
    }

    protected JavaCallable findCallableArityZero(IRubyObject self, String name) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            // TODO: varargs?
            JavaCallable[] callablesForArity = null;
            if (javaCallables.length == 0 || (callablesForArity = javaCallables[0]) == null) {
                raiseNoMatchingCallableError(name, self, EMPTY_OBJECT_ARRAY);
            }
            callable = callablesForArity[0];
        } else {
            if (callable.getParameterTypes().length != 0) {
                throw self.getRuntime().newArgumentError(0, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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        }
        return callable;
    }

    protected JavaCallable findCallableArityOne(IRubyObject self, String name, IRubyObject arg0) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            // TODO: varargs?
            JavaCallable[] callablesForArity = null;
            if (javaCallables.length <= 1 || (callablesForArity = javaCallables[1]) == null) {
                throw self.getRuntime().newArgumentError(1, javaCallables.length - 1);
            }
            callable = CallableSelector.matchingCallableArityOne(runtime, cache, callablesForArity, arg0);
            if (callable == null) {
                throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, callablesForArity, arg0);
            }
        } else {
            if (callable.getParameterTypes().length != 1) {
                throw self.getRuntime().newArgumentError(1, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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        }
        return callable;
    }

    protected JavaCallable findCallableArityTwo(IRubyObject self, String name, IRubyObject arg0, IRubyObject arg1) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            // TODO: varargs?
            JavaCallable[] callablesForArity = null;
            if (javaCallables.length <= 2 || (callablesForArity = javaCallables[2]) == null) {
                throw self.getRuntime().newArgumentError(2, javaCallables.length - 1);
            }
            callable = CallableSelector.matchingCallableArityTwo(runtime, cache, callablesForArity, arg0, arg1);
            if (callable == null) {
                throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, callablesForArity, arg0, arg1);
            }
        } else {
            if (callable.getParameterTypes().length != 2) {
                throw self.getRuntime().newArgumentError(2, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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        }
        return callable;
    }

    protected JavaCallable findCallableArityThree(IRubyObject self, String name, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            // TODO: varargs?
            JavaCallable[] callablesForArity = null;
            if (javaCallables.length <= 3 || (callablesForArity = javaCallables[3]) == null) {
                throw self.getRuntime().newArgumentError(3, javaCallables.length - 1);
            }
            callable = CallableSelector.matchingCallableArityThree(runtime, cache, callablesForArity, arg0, arg1, arg2);
            if (callable == null) {
                throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, callablesForArity, arg0, arg1, arg2);
            }
        } else {
            if (callable.getParameterTypes().length != 3) {
                throw self.getRuntime().newArgumentError(3, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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        }
        return callable;
    }

    protected JavaCallable findCallableArityFour(IRubyObject self, String name, IRubyObject arg0, IRubyObject arg1, IRubyObject arg2, IRubyObject arg3) {
        JavaCallable callable;
        if ((callable = javaCallable) == null) {
            // TODO: varargs?
            JavaCallable[] callablesForArity = null;
            if (javaCallables.length <= 4 || (callablesForArity = javaCallables[4]) == null) {
                throw self.getRuntime().newArgumentError(4, javaCallables.length - 1);
            }
            callable = CallableSelector.matchingCallableArityFour(runtime, cache, callablesForArity, arg0, arg1, arg2, arg3);
            if (callable == null) {
                throw CallableSelector.argTypesDoNotMatch(self.getRuntime(), self, callablesForArity, arg0, arg1, arg2, arg3);
            }
        } else {
            if (callable.getParameterTypes().length != 4) {
                throw self.getRuntime().newArgumentError(4, callable.getParameterTypes().length);
            }
        }
        return callable;
    }
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    // NOTE: The five match methods are arity-split to avoid the cost of boxing arguments
    // when there's already a cached match. Do not condense them into a single
    // method.
    public static JavaCallable matchingCallableArityN(Ruby runtime, Map cache, JavaCallable[] methods, IRubyObject[] args, int argsLength) {
        int signatureCode = argsHashCode(args);
        JavaCallable method = (JavaCallable)cache.get(signatureCode);
        if (method == null) {
            method = (JavaCallable)findMatchingCallableForArgs(runtime, cache, signatureCode, methods, args);
        }
        return method;
    }
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Related Classes of org.jruby.javasupport.JavaCallable

  • org.jruby.java.dispatch.CallableSelector
  • org.jruby.java.invokers.RubyToJavaInvoker
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