Upsilon/Upsilon/Evaluator/Script.cs

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

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

        public object Evaluate()
        {
            var bound  = Binder.BindScript(_parsed);
            return Evaluator.Evaluate(bound);
        }

        public T Evaluate<T>()
        {
            var bound = Binder.BindScript(_parsed);
            return (T)Evaluator.Evaluate(bound);
        }
    }
}