public MethodVisitor visitMethod()

in xbean-reflect/src/main/java/org/apache/xbean/recipe/AsmParameterNameLoader.java [263:307]
40 lines of code
8 McCabe index (conditional complexity)

        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
            if (!name.equals(this.methodName)) {
                return null;
            }

            try {
                final List<String> parameterNames;
                final boolean isStaticMethod;

                if (methodName.equals("<init>")) {
                    Constructor constructor = constructorMap.get(desc);
                    if (constructor == null) {
                        return null;
                    }
                    parameterNames = new ArrayList<String>(constructor.getParameterTypes().length);
                    parameterNames.addAll(Collections.<String>nCopies(constructor.getParameterTypes().length, null));
                    constructorParameters.put(constructor, parameterNames);
                    isStaticMethod = false;
                } else {
                    Method method = methodMap.get(desc);
                    if (method == null) {
                        return null;
                    }
                    parameterNames = new ArrayList<String>(method.getParameterTypes().length);
                    parameterNames.addAll(Collections.<String>nCopies(method.getParameterTypes().length, null));
                    methodParameters.put(method, parameterNames);
                    isStaticMethod = Modifier.isStatic(method.getModifiers());
                }

                return new MethodVisitor(ASM_VERSION) {
                    // assume static method until we get a first parameter name
                    public void visitLocalVariable(String name, String description, String signature, Label start, Label end, int index) {
                        if (isStaticMethod) {
                            parameterNames.set(index, name);
                        } else if (index > 0) {
                            // for non-static the 0th arg is "this" so we need to offset by -1
                            parameterNames.set(index - 1, name);
                        }
                    }
                };
            } catch (Exception e) {
                this.exceptions.put(signature, e);
            }
            return null;
        }