Class ExpressionParser

src/main/java/net/optifine/expr/ExpressionParser.java:13–425

import net.minecraft.src.Config;

public class ExpressionParser
{
    private IExpressionResolver expressionResolver;

    public ExpressionParser(IExpressionResolver expressionResolver)
    {
        this.expressionResolver = expressionResolver;
    }

    public IExpressionFloat parseFloat(String str) throws ParseException
    {
        IExpression iexpression = this.parse(str);

        if (!(iexpression instanceof IExpressionFloat))
        {
            throw new ParseException("Not a float expression: " + iexpression.getExpressionType());
        }
        else
        {
            return (IExpressionFloat)iexpression;
        }
    }

    public IExpressionBool parseBool(String str) throws ParseException
    {
        IExpression iexpression = this.parse(str);

        if (!(iexpression instanceof IExpressionBool))
        {
            throw new ParseException("Not a boolean expression: " + iexpression.getExpressionType());
        }
        else
        {
            return (IExpressionBool)iexpression;
        }
    }

    public IExpression parse(String str) throws ParseException
    {
        try
        {
            Token[] atoken = TokenParser.parse(str);

            if (atoken == null)
            {
                return null;
            }
            else
            {
                Deque<Token> deque = new ArrayDeque(Arrays.asList(atoken));
                return this.parseInfix(deque);
            }
        }
        catch (IOException ioexception)
        {
            throw new ParseException(ioexception.getMessage(), ioexception);
        }
    }