protected void checkMethod()

in ti/phase2/jars/core/src/java/org/apache/ti/compiler/internal/grammar/CatchGrammar.java [122:186]
45 lines of code
14 McCabe index (conditional complexity)

        protected void checkMethod(MethodDeclaration methodBeingChecked, AnnotationValue value,
                                   AnnotationInstance[] parentAnnotations, MemberDeclaration classMember) {
            //
            // Make sure the current entity (class or action method) doesn't have two @Jpf.Catch annotations
            // that refer to methods with duplicate @Jpf.Forwards.
            //
            Collection catches =
                    CompilerUtils.getAnnotationArrayValue(classMember, _annotationRootName, CATCHES_ATTR, true);
            TypeDeclaration outerType = CompilerUtils.getOuterClass(classMember);

            if (catches == null) {
                return;
            }

            for (Iterator ii = catches.iterator(); ii.hasNext();) {
                AnnotationInstance catchAnnotation = (AnnotationInstance) ii.next();
                //
                // Find the method referred to in this annotation.  If we can't find it, do nothing -- this
                // will get caught elsewhere in the checking.
                //
                String methodName = CompilerUtils.getString(catchAnnotation, METHOD_ATTR, false);

                if (methodName.length() > 0 && ! methodName.equals(methodBeingChecked.getSimpleName())) {
                    MethodDeclaration otherMethod = findMethod(methodName, outerType);

                    if (otherMethod != null) {
                        //
                        // Look through this other method's forwards.  None may have the same name (and different path)
                        // as the current one.
                        //
                        Collection otherForwards =
                                CompilerUtils.getAnnotationArrayValue(otherMethod, EXCEPTION_HANDLER_TAG_NAME,
                                        FORWARDS_ATTR, false);

                        for (Iterator i2 = otherForwards.iterator(); i2.hasNext();) {
                            AnnotationInstance otherForward = (AnnotationInstance) i2.next();
                            String otherForwardName = CompilerUtils.getString(otherForward, NAME_ATTR, true);
                            String otherForwardPath = CompilerUtils.getString(otherForward, PATH_ATTR, true);
                            String otherFwdNavigateTo =
                                    CompilerUtils.getEnumFieldName(otherForward, NAVIGATE_TO_ATTR, true);

                            Collection forwards =
                                    CompilerUtils.getAnnotationArrayValue(methodBeingChecked,
                                            EXCEPTION_HANDLER_TAG_NAME,
                                            FORWARDS_ATTR, false);

                            for (Iterator i3 = forwards.iterator(); i3.hasNext();) {
                                AnnotationInstance forward = (AnnotationInstance) i3.next();
                                String forwardName = CompilerUtils.getString(forward, NAME_ATTR, true);
                                String forwardPath = CompilerUtils.getString(forward, PATH_ATTR, true);
                                String fwdNavigateTo = CompilerUtils.getEnumFieldName(forward, NAVIGATE_TO_ATTR, true);

                                if (forwardName != null && forwardName.equals(otherForwardName)) {
                                    if ((forwardPath == null || ! forwardPath.equals(otherForwardPath))
                                            && (fwdNavigateTo == null || ! fwdNavigateTo.equals(otherFwdNavigateTo))) {
                                        addError(value, "error.duplicate-exception-handler-forwards",
                                                new Object[]{methodBeingChecked.getSimpleName(), methodName, forwardName});
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }