public static TResult Evals <TResult>(string expressionStr, string name, Expression expression, object data = null)
{
if (string.IsNullOrEmpty(expressionStr))
{
throw new ArgumentNullException(nameof(expressionStr));
}
var infos = Analyse(expressionStr);
var format = expressionStr;
if (infos.Any(i => i.Mode != ParamMode.Param))
{
var parser = UtilContainer.Resolve <ParamParser.Interface.IParamRegular>();
format = parser.Regular(format, infos, expression, GLOBAL_STATIC_TYPES);
}
IPrecompilter precompilter = UtilContainer.Resolve <IPrecompilter>();
if (precompilter.KeyWords.Any())
{
format = precompilter.Regular(format);
}
var excuterCreator = UtilContainer.Resolve <IExcuterCreator>();
var context = excuterCreator.BuildExcuter();
RegisterBasicType(context, expression);
return(context.Execute <TResult>(name, format, data, ParamConvert.GetParamInfos(data)));
}
public IEnumerable <ExpressionInfo> DoAnalyse(string expression)
{
IKeyWordProvider keyWordProvider = UtilContainer.Resolve <IKeyWordProvider>();
var param = keyWordProvider.Param;
if (expression.IndexOf(param) < 0)
{
return(Enumerable.Empty <ExpressionInfo>());
}
IExpressionInfoBuilder builder = UtilContainer.Resolve <IExpressionInfoBuilder>();
ICollection <ExpressionInfo> expressionInfos = new List <ExpressionInfo>();
var paramStrArray = expression.Split(keyWordProvider.SplitChar).Where(p => p.StartsWith(keyWordProvider.Param)).Select(p => p.Replace(keyWordProvider.Param, string.Empty)).ToArray();
int index = 0;
foreach (var paramStr in paramStrArray)
{
var ei = builder.Build(expression, paramStr, keyWordProvider);
ei.StartIndex = expression.IndexOf(paramStr, index);
index = paramStr.Length + ei.StartIndex;
expressionInfos.Add(ei);
}
return(expressionInfos);
}
public static IEnumerable <ExpressionInfo> Analyse(string expression)
{
var analyse = UtilContainer.Resolve <IAnalyse>();
var infos = analyse.DoAnalyse(expression);
return(infos);
}
public Type FetchType(string name)
{
var asses = Assemblies ?? UtilContainer.Resolve <IAssemblyLoader>().GetAssemblies(name);
var ass = asses.FirstOrDefault(a => name.StartsWith(a.FullName.Split(',')[0], StringComparison.OrdinalIgnoreCase));
if (ass != null)
{
var type = ass.GetType(name);
if (type != null)
{
return(type);
}
}
foreach (var item in asses)
{
if (!item.DefinedTypes.Any(dt => dt.FullName == name))
{
continue;
}
var type = item.GetType(name);
if (type != null)
{
return(type);
}
}
return(null);
}
private static IEnumerable <ParamInfo> GetData(object obj)
{
ITypeFetch typeFetch = UtilContainer.Resolve <ITypeFetch>();
var paramInfos = typeFetch.GetParamInfos(obj, obj.GetType());
SetParamTypeName(paramInfos);
return(paramInfos);
}
public static void Init(string codePath)
{
TemplateCodePath = codePath;
IExcuter func() => new CSharpExcuter();
UtilContainer.UseExcuter(func);
UtilContainer.Use <IAssemblyLoader>(new AssemblyLoader());
}
public static Type Build(string templeFileName, string expression, string className, IEnumerable <ParamInfo> paramInfos, IEnumerable <string> nameSpaces)
{
var tempFile = BuildCode(className, templeFileName, expression, paramInfos, nameSpaces);
ILogger logger = UtilContainer.Resolve <ILogger>();
logger.Info(string.Concat("code template:", tempFile));
var type = BuildType(tempFile, className);
return(type);
}
public string Regular(string expression, IEnumerable <ExpressionInfo> expressionInfos, Expression exps, IEnumerable <Type> staticTypes)
{
foreach (var expressionInfo in expressionInfos.OrderByDescending(e => e.StartIndex))
{
var regular = Create(expressionInfo);
if (regular == null)
{
continue;
}
expression = regular.Regular(expression, expressionInfo, exps, staticTypes);
}
IKeyWordProvider keyWordProvider = UtilContainer.Resolve <IKeyWordProvider>();
return(expression.Replace(keyWordProvider.Param, string.Empty));
}
private static Type CompileType(string originalClassName, IEnumerable <SyntaxTree> syntaxTrees)
{
var assemblyName = $"{originalClassName}.g";
var compilation = CSharpCompilation.Create(assemblyName, syntaxTrees,
options: new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary))
.AddReferences(locations.Select(x => MetadataReference.CreateFromFile(x)));
// 编译到内存流中。
using (var ms = new MemoryStream())
{
var result = compilation.Emit(ms);
if (result.Success)
{
ms.Seek(0, SeekOrigin.Begin);
var assembly = Assembly.Load(ms.ToArray());
return(assembly.GetTypes().First(x => x.Name == originalClassName));
}
ILogger logger = UtilContainer.Resolve <ILogger>();
logger.Warning(string.Join("\r\n", result.Diagnostics.Select(d => d.ToString())));
throw new ArgumentException(string.Join(string.Intern(";"), result.Diagnostics.Select(d => d.ToString())));
}
}
