// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System;
using Mono.Cecil;

namespace TLens.Analyzers
{
    abstract class Analyzer
    {
        protected virtual bool RequiredMethodBody => true;

        public void ProcessAssembly(AssemblyDefinition assembly)
        {
            foreach (var type in assembly.MainModule.Types)
            {
                WalkType(type);
            }
        }

        public abstract void PrintResults(int maxCount);

        void WalkType(TypeDefinition type)
        {
            foreach (var method in type.Methods)
            {
                if (RequiredMethodBody && !method.HasBody)
                    continue;

                ProcessMethod(method);
            }

            if (type.HasNestedTypes)
            {
                foreach (var nt in type.NestedTypes)
                {
                    WalkType(nt);
                }
            }

            ProcessType(type);
        }

        protected virtual void ProcessMethod(MethodDefinition method)
        {
        }

        protected virtual void ProcessType(TypeDefinition type)
        {
        }

        protected static void PrintHeader(string header)
        {
            var str = new string('=', header.Length);
            Console.WriteLine(str);
            Console.WriteLine(header);
            Console.WriteLine(str);
            Console.WriteLine();
        }
    }
}