/// <summary>
/// Creates new instance of the type.
/// </summary>
/// <returns></returns>
public object VisitNew(NewExpr expr)
{
object[] constructorArgs = null;
var paramListExprs = expr.ParamListExpressions;
if (paramListExprs != null && paramListExprs.Count > 0)
{
expr.ParamList = new List <object>();
ParamHelper.ResolveNonNamedParameters(paramListExprs, expr.ParamList, this);
constructorArgs = expr.ParamList.ToArray();
}
// CASE 1: Built in basic system types ( string, date, time, etc )
if (LTypesLookup.IsBasicTypeShortName(expr.TypeName))
{
// TODO: Move this check to Semacts later
var langType = LTypesLookup.GetLType(expr.TypeName);
var methods = this.Ctx.Methods.Get(langType);
var canCreate = methods.CanCreateFromArgs(constructorArgs);
if (!canCreate)
{
throw ExceptionHelper.BuildRunTimeException(expr, "Can not create " + expr.TypeName + " from parameters");
}
// Allow built in type methods to create it.
var result = methods.CreateFromArgs(constructorArgs);
return(result);
}
// CASE 2: Custom types e.g. custom classes.
var hostLangArgs = LangTypeHelper.ConvertToArrayOfHostLangValues(constructorArgs);
var instance = this.Ctx.Types.Create(expr.TypeName, hostLangArgs);
var obj = LangTypeHelper.ConvertToLangClass(instance);
return(obj);
}
/// <summary>
/// Creates new instance of the type.
/// </summary>
/// <returns></returns>
public override object DoEvaluate()
{
object[] constructorArgs = null;
if (ParamListExpressions != null && ParamListExpressions.Count > 0)
{
ParamList = new List <object>();
ParamHelper.ResolveNonNamedParameters(ParamListExpressions, ParamList);
constructorArgs = ParamList.ToArray();
}
// CASE 1: Built in basic system types ( string, date, time, etc )
if (LTypesLookup.IsBasicTypeShortName(this.TypeName))
{
// TODO: Move this check to Semacts later
var langType = LTypesLookup.GetLType(this.TypeName);
var methods = this.Ctx.Methods.Get(langType);
var canCreate = methods.CanCreateFromArgs(constructorArgs);
if (!canCreate)
{
throw BuildRunTimeException("Can not create " + this.TypeName + " from parameters");
}
// Allow built in type methods to create it.
var result = methods.CreateFromArgs(constructorArgs);
return(result);
}
// CASE 2: Custom types e.g. custom classes.
var hostLangArgs = LangTypeHelper.ConvertToArrayOfHostLangValues(constructorArgs);
var instance = Ctx.Types.Create(this.TypeName, hostLangArgs);
return(new LClass(instance));
}
public void InitPlugins()
{
var totalPlugins = _context.Plugins.Total();
var tokenIt = _parser.TokenIt;
var lexer = _parser.Lexer;
if (!_pluginsInitialized)
{
// 2. Register default methods if not present.
Tokens.Default();
ErrorCodes.Init();
LTypesLookup.Init();
_context.Methods.RegisterIfNotPresent(LTypes.Array, new LJSArrayMethods());
_context.Methods.RegisterIfNotPresent(LTypes.Date, new LJSDateMethods());
_context.Methods.RegisterIfNotPresent(LTypes.String, new LJSStringMethods());
_context.Methods.RegisterIfNotPresent(LTypes.Time, new LJSTimeMethods());
_context.Methods.RegisterIfNotPresent(LTypes.Map, new LJSMapMethods());
_context.Methods.RegisterIfNotPresent(LTypes.Table, new LJSTableMethods());
}
if (!_pluginsInitialized || totalPlugins > _lastInitializationPluginCount)
{
// 3. Initialize the plugins.
var expParser = new ExprParser();
expParser._parser = _parser;
_context.PluginsMeta.Parser = expParser;
_context.Plugins.RegisterAllSystem();
_context.Plugins.ForEach <IExprPlugin>(plugin =>
{
plugin.Init(_parser, tokenIt);
plugin.Ctx = _context;
plugin.ExpParser = expParser;
});
_context.Plugins.ForEach <ITokenPlugin>(plugin => { plugin.Init(_parser, tokenIt); });
_context.Plugins.ForEach <ILexPlugin>(plugin => { plugin.Init(lexer); plugin.Ctx = _context; });
_context.Plugins.ExecuteSetupPlugins(_context);
PreprocessHelper.Ctx = _context;
_lastInitializationPluginCount = _context.Plugins.Total();
}
_pluginsInitialized = true;
}
/// <summary>
/// Callback for when these methods are registered with the system.
/// </summary>
public override void OnRegistered()
{
// Associated the javascript Date type name "Date" to LDate type name : "sys.datetime".
LTypesLookup.RegisterAlias(this.DataType, "Time", "Time");
}
