using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SharpDX.D3DCompiler;
using System.IO;

namespace UnitTestSharpHLSLTests
{
    public class CompilerTests : UnitTestSharp.TestFixture
    {
        public void NoErrorsOrWarnings()
        {
            string text = @"
                void Function()
                {
                    int x = 0;
                    x *= 10;
                }";

            CheckEqual("", UnitTestSharpHLSL.Compiler.TestForCompileErrors(text, "dummy.fx"));
        }

        public void SyntaxError()
        {
            string text = @"
                void Function()
                {
                    int x = 0
                    x *= 10;
                }";

            CheckEqual("dummy.fx(5,5): error X3000: syntax error: unexpected token 'x'",
                UnitTestSharpHLSL.Compiler.TestForCompileErrors(text, "dummy.fx"));
        }

        public void Empty()
        {
            string text = @"";

            CheckEqual("", UnitTestSharpHLSL.Compiler.TestForCompileErrors(text, "dummy.fx"));
        }

        public class CustomHeaderWithError : Include
        {
            public CustomHeaderWithError() { }

            public Stream Open(IncludeType type, string fileName, Stream parentStream)
            {
                return new System.IO.MemoryStream(Encoding.ASCII.GetBytes("int x = 10\n void Fxn() { }"));
            }

            public void Close(System.IO.Stream stream)
            {
                
            }

            public void Dispose()
            {
                Shadow.Dispose();
            }

            public IDisposable Shadow { get; set; }
        }

        public void ErrorInHeader()
        {
            string text = @"
                #include ""test.h""
                void Function()
                {
                    int x = 0;
                    x *= 10;
                }";

            CheckEqual("test.h(2,1): error X3000: syntax error: unexpected token 'void'",
                UnitTestSharpHLSL.Compiler.TestForCompileErrors(text, "dummy.fx", new CustomHeaderWithError()));
        }

        public void WeirdPossibleErrors()
        {
            string error = "(7): error X3000: syntax error: unexpected token '('";

            string parsed = UnitTestSharpHLSL.Compiler.ParseXNAWarningsAndErrors(error, "something.fx");

            CheckEqual("something.fx(7): error X3000: syntax error: unexpected token '('", parsed);
        }

        public void ParentheticalFilenames()
        {
            string error = "Z:/stuff(3)/stuff(4)/stuff(5)/something.(9)(7): error X3000: syntax error: unexpected token '('";

            string parsed = UnitTestSharpHLSL.Compiler.ParseXNAWarningsAndErrors(error, "something.fx");

            CheckEqual("Z:/stuff(3)/stuff(4)/stuff(5)/something.(9)(7): error X3000: syntax error: unexpected token '('", parsed);
        }
    }
}