/// <summary>
/// Generates the name of the cache directory for the specified script file.
/// </summary>
/// <param name="file">Script file name.</param>
/// <returns>Cache directory name.</returns>
public static string GetCacheDirectory(string file)
{
string commonCacheDir = Path.Combine(CSScript.GetScriptTempDir(), "cache");
string cacheDir;
string directoryPath = Path.GetDirectoryName(Path.GetFullPath(file));
string dirHash;
if (Runtime.IsWin)
{
//Win is not case-sensitive so ensure, both lower and capital case path yield the same hash
dirHash = directoryPath.ToLower().GetHashCodeEx().ToString();
}
else
{
dirHash = directoryPath.GetHashCodeEx().ToString();
}
cacheDir = Path.Combine(commonCacheDir, dirHash);
if (!Directory.Exists(cacheDir))
{
try
{
Directory.CreateDirectory(cacheDir);
}
catch (UnauthorizedAccessException)
{
var parentDir = commonCacheDir;
if (!Directory.Exists(commonCacheDir))
{
parentDir = Path.GetDirectoryName(commonCacheDir); // GetScriptTempDir()
}
throw new Exception("You do not have write privileges for the CS-Script cache directory (" + parentDir + "). " +
"Make sure you have sufficient privileges or use an alternative location as the CS-Script " +
"temporary directory (cscs -config:set=CustomTempDirectory=<new temp dir>)");
}
}
string infoFile = Path.Combine(cacheDir, "css_info.txt");
if (!File.Exists(infoFile))
{
try
{
using (var sw = new StreamWriter(infoFile))
{
sw.WriteLine(Environment.Version.ToString());
sw.WriteLine(directoryPath);
}
}
catch
{
//there can be many reasons for the failure (e.g. file is already locked by another writer),
//which in most of the cases does not constitute the error but rather a runtime condition
}
}
return(cacheDir);
}
/// <summary>
/// Compiles the specified script text.
/// </summary>
/// <param name="scriptText">The script text.</param>
/// <param name="scriptFile">The script file.</param>
/// <param name="info">The information.</param>
/// <returns>The method result.</returns>
override protected (byte[] asm, byte[] pdb) Compile(string scriptText, string scriptFile, CompileInfo info)
{
string tempScriptFile = null;
string injection_file = null;
try
{
if (scriptFile == null)
{
tempScriptFile = CSScript.GetScriptTempFile();
File.WriteAllText(tempScriptFile, scriptText);
}
var project = Project.GenerateProjectFor(tempScriptFile ?? scriptFile);
var refs = project.Refs.Concat(this.GetReferencedAssembliesFiles()).Distinct().ToArray();
var sources = project.Files;
if (info?.AssemblyFile != null)
{
injection_file = CoreExtensions.GetScriptedCodeAttributeInjectionCode(info.AssemblyFile);
sources = sources.Concat(new[] { injection_file }).ToArray();
}
int scriptHash = 0;
if (IsCachingEnabled)
{
var hashableCode = new StringBuilder();
hashableCode.Append($"{scriptText}.{scriptFile?.GetFullPath()}");
foreach (string dependencyScript in sources)
{
hashableCode.Append(File.ReadAllText(dependencyScript).GetHashCode());
}
scriptHash = $"{scriptText}.{scriptFile?.GetFullPath()}".GetHashCode(); // not very sophisticated (e.g. not all ref asms are
// included in hashing)
// but adequate
if (scriptCache.ContainsKey(scriptHash))
{
return(scriptCache[scriptHash]);
}
}
(byte[], byte[])result = CompileAssemblyFromFileBatch_with_Csc(sources, refs, info?.AssemblyFile, this.IsDebug, info);
if (IsCachingEnabled)
{
scriptCache[scriptHash] = result;
}
return(result);
}
finally
{
if (this.IsDebug)
{
CSScript.NoteTempFile(tempScriptFile);
}
else
{
tempScriptFile.FileDelete(rethrow: false);
}
injection_file.FileDelete(rethrow: false);
CSScript.StartPurgingOldTempFiles(ignoreCurrentProcessScripts: true);
}
}
/// <summary>
/// Wraps C# code fragment into auto-generated class (type name <c>DynamicClass</c>), evaluates it and loads
/// the class to the current AppDomain.
/// </summary>
/// <example>The following is the simple example of the LoadMethod usage:
/// <code>
/// dynamic script = CSScript.RoslynEvaluator
/// .LoadMethod(@"int Product(int a, int b)
/// {
/// return a * b;
/// }");
///
/// int result = script.Product(3, 2);
/// </code>
/// </example>
/// <param name="code">The C# script text.</param>
/// <returns>Instance of the first class defined in the script.</returns>
public object LoadMethod(string code)
{
string scriptText = CSScript.WrapMethodToAutoClass(code, false, false);
return(LoadCodeByName(scriptText, $"*.{Globals.DynamicWrapperClassName}"));
}
/// <summary>
/// Wraps C# code fragment into auto-generated class (type name <c>DynamicClass</c>), evaluates it and loads
/// the class to the current AppDomain.
/// <para>
/// After initializing the class instance it is aligned to the interface specified by the parameter <c>T</c>.
/// </para>
/// </summary>
/// <example>The following is the simple example of the interface alignment:
/// <code>
/// public interface ICalc
/// {
/// int Sum(int a, int b);
/// int Div(int a, int b);
/// }
/// ....
/// ICalc script = CSScript.RoslynEvaluator
/// .LoadMethod<ICalc>(@"public int Sum(int a, int b)
/// {
/// return a + b;
/// }
/// public int Div(int a, int b)
/// {
/// return a/b;
/// }");
/// int result = script.Div(15, 3);
/// </code>
/// </example>
/// <typeparam name="T">The type of the interface type the script class instance should be aligned to.</typeparam>
/// <param name="code">The C# script text.</param>
/// <returns>Aligned to the <c>T</c> interface instance of the auto-generated class defined in the script.</returns>
public T LoadMethod <T>(string code) where T : class
{
string scriptText = CSScript.WrapMethodToAutoClass(code, false, false, typeof(T).FullName);
return(LoadCode <T>(scriptText));
}
/// <summary>
/// Wraps C# code fragment into auto-generated class (type name <c>DynamicClass</c>) and evaluates it.
/// <para>
/// This method is a logical equivalent of <see cref="CSScriptLib.IEvaluator.CompileCode"/> but is allows you to define
/// your script class by specifying class method instead of whole class declaration.</para>
/// </summary>
/// <example>
///<code>
/// dynamic script = CSScript.RoslynEvaluator
/// .CompileMethod(@"int Sum(int a, int b)
/// {
/// return a+b;
/// }")
/// .CreateObject("*");
///
/// var result = script.Sum(7, 3);
/// </code>
/// </example>
/// <param name="code">The C# code.</param>
/// <returns>The compiled assembly.</returns>
public Assembly CompileMethod(string code)
{
string scriptText = CSScript.WrapMethodToAutoClass(code, false, false);
return(CompileCode(scriptText));
}