using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Linq.Expressions;

using System.CodeDom;

using LinqToCodedom.Visitors;

using LinqToCodedom.CodeDomPatterns;



namespace LinqToCodedom.Generator

{

    public static partial class Emit

    {

        public static CodeUsingStatement @using<TResult, T>(Expression<Func<TResult, T>> exp,

            params CodeStatement[] stmt)

        {

            return new CodeUsingStatement(

                new CodeExpressionVisitor(new VisitorContext()).Visit(exp), stmt

            );

        }



        public static CodeUsingStatement @using<TResult>(Expression<Func<TResult>> exp,

            params CodeStatement[] stmt)

        {

            return new CodeUsingStatement(

                new CodeExpressionVisitor(new VisitorContext()).Visit(exp), stmt

            );

        }



        public static CodeUsingStatement @using<TResult, T>(string varName, 

            Expression<Func<TResult, T>> exp, params CodeStatement[] stmt)

        {

            return new CodeUsingStatement(

                new CodeAssignExpression(

                    new CodeParameterDeclarationExpression(typeof(TResult), varName),

                    new CodeExpressionVisitor(new VisitorContext()).Visit(exp)

                ), stmt

            );

        }



        public static CodeUsingStatement @using<TResult>(string varName, 

            Expression<Func<TResult>> exp, params CodeStatement[] stmt)

        {

            return new CodeUsingStatement(

                new CodeAssignExpression(

                    new CodeParameterDeclarationExpression(typeof(TResult), varName),

                    new CodeExpressionVisitor(new VisitorContext()).Visit(exp)

                ), stmt

            );

        }



        public static CodeUsingStatement @using<TResult>(CodeTypeReference varType, string varName,

            Expression<Func<TResult>> exp, params CodeStatement[] stmt)

        {

            return new CodeUsingStatement(

                new CodeAssignExpression(

                    new CodeParameterDeclarationExpression(varType, varName),

                    new CodeExpressionVisitor(new VisitorContext()).Visit(exp)

                ), stmt

            );

        }



    }

}