| public Parse ( Type resultType ) : Expression | ||
| resultType | Type | |
| return | Expression | |
/// <summary>
/// Evaluate a string expression to a boolean "True" or "False" (if possible).
/// An alternative to Evaluate that behaves nicely with the TextWindow.
/// </summary>
/// <param name="expression">The expression to evaluate to a boolean, e.g. "21.3 > 16".</param>
/// <returns>The evaluated result ("True" or "False").</returns>
public static Primitive Evaluate3(Primitive expression)
{
try
{
ParameterExpression pe = Expression.Parameter(typeof(string), "IntegerAsReal");
ExpressionParser parser = new ExpressionParser(new ParameterExpression[] { pe }, expression, null);
LambdaExpression expr = Expression.Lambda(parser.Parse(typeof(bool)), null);
var del = (Func<bool>)expr.Compile();
return del();
}
catch (Exception ex)
{
Utilities.OnError(Utilities.GetCurrentMethod(), ex);
return "";
}
}
public static LambdaExpression ParseLambda(ParameterExpression[] parameters, Type resultType, string expression, params object[] values)
{
ExpressionParser parser = new ExpressionParser(parameters, expression, values);
return(Expression.Lambda(parser.Parse(resultType), parameters));
}
public static LambdaExpression ParseLambda(IDynamicLinkCustomTypeProvider provider, ParameterExpression[] parameters, Type resultType, string expression, params object[] values)
{
ExpressionParser parser = new ExpressionParser(provider, parameters, expression, values);
return(Expression.Lambda(parser.Parse(resultType), parameters));
}
public static Expression Parse(Type resultType, string expression, params object[] values)
{
var parser = new ExpressionParser(null, expression, values);
return(parser.Parse(resultType));
}
public static LambdaExpression ParseLambda(ParameterExpression[] parameters, Type resultType, string expression, params object[] values)
{
ExpressionParser parser = new ExpressionParser(parameters, expression, values);
return Expression.Lambda(parser.Parse(resultType), parameters);
}
public static Expression Parse(Type resultType, string expression, ICollection <Type> additionalAllowedTypes = null, params object[] values)
{
var parser = new ExpressionParser(null, expression, values, additionalAllowedTypes);
return(parser.Parse(resultType));
}
public static LambdaExpression ParseLambda(ParameterExpression[] parameters, Type resultType, string expression, ICollection <Type> additionalAllowedTypes = null, params object[] values)
{
var parser = new ExpressionParser(parameters, expression, values, additionalAllowedTypes);
return(Expression.Lambda(parser.Parse(resultType), parameters));
}
public static LambdaExpression ParseLambda(ParameterExpression[] parameters, Type resultType, string expression, QueryResolver queryResolver)
{
ExpressionParser parser = new ExpressionParser(parameters, expression, queryResolver);
return Lambda(parser.Parse(resultType), parameters);
}
