Automation/Utilities/Interpreter.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;


namespace ComLib.Automation
{
    /// <summary>
    /// Very, Very light version of Javascript - JSLite. Non-Lexical parser.
    /// Features include:
    /// 1. var declarations
    /// 2. if conditions
    /// 3. while loops
    /// 4. for loops
    /// 5. func calls
    /// </summary>
    public class Interpreter
    {
        private const string RegexCommentSingleLine = @"\s*\\\\\s{1}\*";
        private const string RegexVariable = @"\s*var\s*(?<name>[\w]+)\s*=\s*(?<value>.+)$";
        private const string RegexForLoop = @"\s*for\s*\(\s*var\s+(?<name>\w+)\s*=\s*(?<start>[^;]+);\s*(?<checkname>\w+)\s*(?<checkop>[^\s]+)\s*(?<checkvalue>[^;]+);\s*(?<incrementname>\w+)\s*(?<incrementvalue>[^\)]+)\)\{?";
        private const string RegexFuncCall = @"\s*(?<funcname>[\$_\w\.]+)\(";

        private Scope _scope;        
        //private Func<JsLiteArgs,bool> _visitor;


        /// <summary>
        /// Initialize interpreter with scope.
        /// </summary>
        /// <param name="scope">Scope of the script.</param>
        public Interpreter(Scope scope)
        {
            _scope = scope;            
        }


        /// <summary>
        /// Whether or not the line supplied is a for loop.
        /// </summary>
        /// <param name="line"></param>
        /// <returns></returns>
        public bool IsForLoop(string line)
        {
            var match = Regex.Match(line, RegexForLoop);
            if (!match.Success) return false;

            // Check the checkop
            var checkOp = match.Groups["checkop"].Value;
            if (checkOp != "<" && checkOp != "<=" && checkOp != ">" && checkOp != ">=")
                return false;

            return true;
        }


        /// <summary>