Examples of groovy.lang.MetaMethod

groovy.lang.MetaMethod
Represents a Method on a Java object a little like {@link java.lang.reflect.Method}except without using reflection to invoke the method @author James Strachan @author Alex Tkachman @version $Revision: 10617 $

    private void appendMethods(StringBuffer buffer) {
        for (int i = 0; i < methods.size; i++) {
            buffer.append("\n  ");
            Object methodOrConstructor = methods.get(i);
            if (methodOrConstructor instanceof MetaMethod) {
                MetaMethod method = (MetaMethod) methodOrConstructor;
                buffer.append(Modifier.toString(method.getModifiers()));
                buffer.append(" ").append(method.getReturnType().getName());
                buffer.append(" ").append(method.getDeclaringClass().getName());
                buffer.append("#");
                buffer.append(method.getName());
                appendClassNames(buffer,method.getNativeParameterTypes());
            }
            else {
                CachedConstructor method = (CachedConstructor) methodOrConstructor;
                buffer.append(Modifier.toString(method.cachedConstructor.getModifiers()));
                buffer.append(" ").append(method.cachedConstructor.getDeclaringClass().getName());
                buffer.append("#<init>");
                appendClassNames(buffer,method.getNativeParameterTypes());
            }
        }
    }

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                CachedClass[] paramTypes = cachedMethod.getParameterTypes();
                if (paramTypes.length > 0) {
                    CachedClass metaClass = paramTypes[0];
                    Map metaMethodsMap = getMetaMethods(properties, metaClass.getCachedClass());
                    List methodList = getMethodList(metaMethodsMap, method.getName());
                    MetaMethod mmethod = new CategoryMethod(cachedMethod, metaClass.getCachedClass());
                    methodList.add(mmethod);
                    Collections.sort(methodList);
                }
            }
        }

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     * @return true if a method of the same matching prototype was found in the
     *         list
     */
    public static boolean containsMatchingMethod(List list, MetaMethod method) {
        for (Iterator iter = list.iterator(); iter.hasNext();) {
            MetaMethod aMethod = (MetaMethod) iter.next();
            CachedClass[] params1 = aMethod.getParameterTypes();
            CachedClass[] params2 = method.getParameterTypes();
            if (params1.length == params2.length) {
                boolean matches = true;
                for (int i = 0; i < params1.length; i++) {
                    if (params1[i] != params2[i]) {

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            FastArray oldList = (FastArray) oldListOrMethod;
            Entry e = null;
            int len1 = oldList.size();
            Object list[] = oldList.getArray();
            for (int j = 0; j != len1; ++j) {
                MetaMethod method = (MetaMethod) list[j];
                if (method.isPrivate()) continue;
                if (e == null)
                    e = getOrPutMethods(from.name, to);
                e.methods = addMethodToList(e.methods, method);
            }
        } else {
            MetaMethod method = (MetaMethod) oldListOrMethod;
            if (!method.isPrivate()) {
                Entry e = getOrPutMethods(from.name, to);
                e.methods = addMethodToList(e.methods, method);
            }
        }
    }

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            FastArray oldList = (FastArray) oldListOrMethod;
            Entry e = null;
            int len1 = oldList.size();
            Object list[] = oldList.getArray();
            for (int j = 0; j != len1; ++j) {
                MetaMethod method = (MetaMethod) list[j];
                if (e == null)
                    e = getOrPutMethods(from.name, to);
                e.methodsForSuper = addMethodToList(e.methodsForSuper, method);
            }
        } else {
            MetaMethod method = (MetaMethod) oldListOrMethod;
            Entry e = getOrPutMethods(from.name, to);
            e.methodsForSuper = addMethodToList(e.methodsForSuper, method);
        }
    }

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        if (oldListOrMethod instanceof FastArray) {
            FastArray oldList = (FastArray) oldListOrMethod;
            int len1 = oldList.size();
            Object list[] = oldList.getArray();
            for (int j = 0; j != len1; ++j) {
                MetaMethod method = (MetaMethod) list[j];
                if (method.isPrivate()) continue;
                e.methods = addMethodToList(e.methods, method);
            }
        } else {
            MetaMethod method = (MetaMethod) oldListOrMethod;
            if (!method.isPrivate()) {
                e.methods = addMethodToList(e.methods, method);
            }
        }
    }

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            FastArray oldList = (FastArray) oldListOrMethod;
            Entry e = null;
            int len1 = oldList.size();
            Object list[] = oldList.getArray();
            for (int j = 0; j != len1; ++j) {
                MetaMethod method = (MetaMethod) list[j];
                if (method instanceof NewMetaMethod || method.isPrivate()) continue;
                if (e == null)
                    e = getOrPutMethods(from.name, to);
                e.methods = addMethodToList(e.methods, method);
            }
        } else {
            MetaMethod method = (MetaMethod) oldListOrMethod;
            if (method instanceof NewMetaMethod || method.isPrivate()) return;
            Entry e = getOrPutMethods(from.name, to);
            e.methods = addMethodToList(e.methods, method);
        }
    }

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        if (o == null) {
            return method;
        }


        if (o instanceof MetaMethod) {
            MetaMethod match = (MetaMethod) o;
            if (!isMatchingMethod(match, method)) {
                FastArray list = new FastArray(2);
                list.add(match);
                list.add(method);
                return list;
            } else {
                if (match.isPrivate()
                        || (!isNonRealMethod(match) && match.getDeclaringClass().isInterface() && !method.getDeclaringClass().isInterface())) {
                    // do not overwrite interface methods with instance methods
                    // do not overwrite private methods
                    // Note: private methods from parent classes are not shown here,
                    // but when doing the multimethod connection step, we overwrite
                    // methods of the parent class with methods of a subclass and
                    // in that case we want to keep the private methods
                } else {
                    CachedClass methodC = method.getDeclaringClass();
                    CachedClass matchC = match.getDeclaringClass();
                    if (methodC == matchC) {
                        if (isNonRealMethod(method)) {
                            return method;
                        }
                    } else if (!methodC.isAssignableFrom(matchC.getCachedClass())) {
                        return method;
                    }
                }
            }
            return o;
        }


        if (o instanceof FastArray) {
            FastArray list = (FastArray) o;
            int found = findMatchingMethod(list, method);


            if (found == -1) {
                list.add(method);
            } else {
                MetaMethod match = (MetaMethod) list.get(found);
                if (match==method) return o;
                if (match.isPrivate()
                        || (!isNonRealMethod(match) && match.getDeclaringClass().isInterface() && !method.getDeclaringClass().isInterface())) {
                    // do not overwrite interface methods with instance methods
                    // do not overwrite private methods
                    // Note: private methods from parent classes are not shown here,
                    // but when doing the multimethod connection step, we overwrite
                    // methods of the parent class with methods of a subclass and
                    // in that case we want to keep the private methods
                } else {
                    CachedClass  methodC = method.getDeclaringClass();
                    CachedClass matchC = match.getDeclaringClass();
                    if (methodC == matchC) {
                        if (isNonRealMethod(method)) {
                            list.set(found, method);
                        }
                    } else if (!methodC.isAssignableFrom(matchC.getCachedClass())) {

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    private int findMatchingMethod(FastArray list, MetaMethod method) {
        int len = list.size();
        Object data[] = list.getArray();
        for (int j = 0; j != len; ++j) {
            MetaMethod aMethod = (MetaMethod) data[j];
            if (isMatchingMethod(aMethod, method))
                return j;
        }
        return -1;
    }

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            FastArray oldList = (FastArray) oldListOrMethod;
            Entry e = null;
            int len1 = oldList.size();
            Object list[] = oldList.getArray();
            for (int j = 0; j != len1; ++j) {
                MetaMethod method = (MetaMethod) list[j];
                if (e == null)
                    e = getOrPutMethods(from.name, to);
                e.methods = addMethodToList(e.methods, method);
            }
        } else {
            MetaMethod method = (MetaMethod) oldListOrMethod;
            if (!method.isPrivate()) {
                Entry e = getOrPutMethods(from.name, to);
                e.methods = addMethodToList(e.methods, method);
            }
        }
    }

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