public ExpressionParser(SourceExpression sourceExpression, ReadOnlyParseOption option)
{
index = 0;
se = sourceExpression;
this.option = option;
maxUnaryOperatorLength = option.UnaryOperators.Any() ?
(from item in option.UnaryOperators select item.Operator.Length).Max(x => x) : 0;
maxBinaryOperatorLength = option.BinaryOperators.Any() ?
(from item in option.BinaryOperators select item.Operator.Length).Max(x => x) : 0;
}
public EvaluableExpression Parse(string expr, ReadOnlyParseOption option = null)
{
if (string.IsNullOrWhiteSpace(expr))
{
throw new ArgumentException($"{nameof(expr)} can not be null, empty, and consists only of white-space");
}
var sourceExpression = new SourceExpression(expr);
var parser = new ExpressionParser(sourceExpression, option ?? defaultParseOption);
var expression = parser.Parse();
return(expression);
}
public static EvaluableExpression ToEvaluableExpression(this string expr, IParser parser, ReadOnlyParseOption option) => (parser ?? Parser.Default).Parse(expr, option);
public static IEvaluator <TState> Compile <TState>(this string expr, ReadOnlyParseOption option, ICompiler compiler = null) => Compile <TState>(expr, null, option, compiler);
public static IEvaluator <TState> Compile <TState>(this string expr, IParser parser, ReadOnlyParseOption option, ICompiler compiler = null) => expr.ToEvaluableExpression(parser, option).Compile <TState>(compiler ?? Compiler.Default);
public static EvaluableExpression ToEvaluableExpression(this string expr, ReadOnlyParseOption option) => ToEvaluableExpression(expr, null, option);
