Upsilon/Upsilon/Evaluator/Script.cs

using System.Collections.Generic;
using Upsilon.BaseTypes;
using Upsilon.Binder;
using Upsilon.Parser;
using Upsilon.Text;
using Upsilon.Utilities;

namespace Upsilon.Evaluator
{
    public class Script
    {
        private SourceText ScriptString { get; }
        private Evaluator Evaluator { get; }
        private readonly BlockStatementSyntax _parsed;
        public Diagnostics Diagnostics { get; }
        private Binder.Binder Binder { get; }
        public EvaluationScope Scope { get; }

        public Script(string scriptString, Dictionary<VariableSymbol, LuaType> variables = null)
        {
            ScriptString = new SourceText(scriptString);
            Diagnostics = new Diagnostics(ScriptString);
            _parsed = Parser.Parser.Parse(scriptString, Diagnostics);
            if (variables == null)
                variables = new Dictionary<VariableSymbol, LuaType>();
            Binder = new Binder.Binder(Diagnostics, variables);
            Evaluator = new Evaluator( Diagnostics, variables);
            Scope = Evaluator.Scope;
        }

        public BoundScript Bind()
        {
            return Binder.BindScript(_parsed);
        }

        public object Evaluate()
        {
            return Evaluator.Evaluate(Bind());
        }

        public T Evaluate<T>() where T : LuaType
        {
            return (T)Evaluator.Evaluate(Bind());
        }

        public string PrettyPrintSyntaxTree()
        {
            return _parsed.Print();
        }
    }
}