/// <summary>
/// Formulate string.
/// </summary>
/// <param name="ctx"></param>
/// <param name="argument"></param>
/// <param name="format">string that contains the formatting, e.g. "X8"</param>
/// <param name="result"></param>
/// <returns></returns>
public bool TryEvaluate(ref FunctionEvaluationContext ctx, object argument, object format, out object result)
{
if (argument == null)
{
result = null; return(false);
}
string formatStr = format?.ToString();
// Try custom format provider
if (ctx.FormatProvider != null)
{
ICustomFormatter customFormatter__ = ctx.FormatProvider.GetFormat(typeof(ICustomFormatter)) as ICustomFormatter;
if (customFormatter__ != null)
{
string custom_formatter_result = customFormatter__.Format(formatStr, argument, ctx.Culture);
if (custom_formatter_result != null)
{
result = custom_formatter_result; return(true);
}
}
}
if (argument is Enum @enum)
{
string separator = null;
if (formatStr == null || formatStr == "" || formatStr == "g" || formatStr == "G" || formatStr == "f" || formatStr == "F")
{
separator = ", ";
}
else if (formatStr == "|")
{
separator = formatStr;
}
else if (formatStr == " |")
{
separator = " | ";
}
if (separator != null)
{
LineString enum_string = ctx.EvaluateEnum(@enum, separator);
if (enum_string.Value != null)
{
result = enum_string.Value; return(true);
}
}
}
if (formatStr != null && argument is IFormattable formattable)
{
result = formattable.ToString(formatStr, ctx.Culture); return(true);
}
if (ctx.Culture.GetFormat(typeof(ICustomFormatter)) is ICustomFormatter customFormatter_)
{
result = customFormatter_.Format(formatStr, argument, ctx.Culture); return(true);
}
result = ctx.Culture == null?String.Format("{0:" + formatStr + "}", argument) : String.Format(ctx.Culture, "{0:" + formatStr + "}", argument);
return(true);
}
/// <summary>
/// Call 3-argument function.
/// </summary>
/// <param name="function"></param>
/// <param name="ctx"></param>
/// <param name="arg0">Function argument</param>
/// <param name="arg1"></param>
/// <param name="arg2"></param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected situation</exception>
public static bool TryEvaluate(this IFunction function, ref FunctionEvaluationContext ctx, object arg0, object arg1, object arg2, out object result)
{
if (function is IFunction3 func3 && func3.TryEvaluate(ref ctx, arg0, arg1, arg2, out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, new object[] { arg0, arg1, arg2 }, out result))
{
return(true);
}
result = null; return(false);
}
/// <summary>
/// Call 0-arguments function.
/// </summary>
/// <param name="function"></param>
/// <param name="ctx"></param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected situation</exception>
public static bool TryEvaluate(this IFunction function, ref FunctionEvaluationContext ctx, out object result)
{
if (function is IFunction0 func0 && func0.TryEvaluate(ref ctx, out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, no_args, out result))
{
return(true);
}
result = null; return(false);
}
/// <summary>
/// Call n-arguments function.
/// </summary>
/// <param name="function"></param>
/// <param name="ctx"></param>
/// <param name="args">Function arguments</param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected error</exception>
public static bool TryEvaluate(this IFunction function, ref FunctionEvaluationContext ctx, object[] args, out object result)
{
if (args == null || args.Length == 0)
{
if (function is IFunction0 func0 && func0.TryEvaluate(ref ctx, out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args ?? no_args, out result))
{
return(true);
}
}
if (args.Length == 1)
{
if (function is IFunction1 func1 && func1.TryEvaluate(ref ctx, args[0], out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (args.Length == 2)
{
if (function is IFunction2 func2 && func2.TryEvaluate(ref ctx, args[0], args[1], out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (args.Length == 3)
{
if (function is IFunction3 func3 && func3.TryEvaluate(ref ctx, args[0], args[1], args[2], out result))
{
return(true);
}
if (function is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (function is IFunctionN funcN_ && funcN_.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
result = null; return(false);
}
/// <summary>
/// Add padding.
/// </summary>
/// <param name="ctx"></param>
/// <param name="argument"></param>
/// <param name="alignment">Int32 or Int64, negative value is padding to left of <paramref name="argument"/>, positive value is padding to right of <paramref name="argument"/></param>
/// <param name="result"></param>
/// <returns></returns>
public bool TryEvaluate(ref FunctionEvaluationContext ctx, object argument, object alignment, out object result)
{
String s = argument?.ToString();
if (s == null)
{
result = null; return(false);
}
int a;
if (alignment is Int32 i)
{
a = i;
}
else if (alignment is Int64 ii)
{
a = (Int32)ii;
}
else
{
result = s; return(true);
}
if (a == 0)
{
result = s; return(true);
}
if (a < 0)
{
a = -a;
if (s.Length >= a)
{
result = s; return(true);
}
result = s + new string(' ', a - s.Length);
return(true);
}
{
if (s.Length >= a)
{
result = s; return(true);
}
result = new string(' ', a - s.Length) + s;
return(true);
}
}
/// <summary>
/// Call n-arguments function.
/// </summary>
/// <param name="functions"></param>
/// <param name="functionName"></param>
/// <param name="ctx"></param>
/// <param name="args">Function arguments</param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected error</exception>
public static bool TryEvaluate(this IFunctions functions, string functionName, ref FunctionEvaluationContext ctx, object[] args, out object result)
{
if (functions == null || functionName == null)
{
result = null; return(false);
}
IFunction func;
if (functions is IFunctionsQueryable queryable && queryable.TryGetValue(functionName, out func))
{
if (args == null || args.Length == 0)
{
if (func is IFunction0 func0 && func0.TryEvaluate(ref ctx, out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args ?? no_args, out result))
{
return(true);
}
}
if (args.Length == 1)
{
if (func is IFunction1 func1 && func1.TryEvaluate(ref ctx, args[0], out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (args.Length == 2)
{
if (func is IFunction2 func2 && func2.TryEvaluate(ref ctx, args[0], args[1], out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (args.Length == 3)
{
if (func is IFunction3 func3 && func3.TryEvaluate(ref ctx, args[0], args[1], args[2], out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
if (func is IFunctionN funcN_ && funcN_.TryEvaluate(ref ctx, args, out result))
{
return(true);
}
}
result = null; return(false);
}
/// <summary>
/// Call 3-argument function.
/// </summary>
/// <param name="functions"></param>
/// <param name="functionName"></param>
/// <param name="ctx"></param>
/// <param name="arg0">Function argument</param>
/// <param name="arg1"></param>
/// <param name="arg2"></param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected error</exception>
public static bool TryEvaluate(this IFunctions functions, string functionName, ref FunctionEvaluationContext ctx, object arg0, object arg1, object arg2, out object result)
{
if (functions == null || functionName == null)
{
result = null; return(false);
}
IFunction func;
if (functions is IFunctionsQueryable queryable && queryable.TryGetValue(functionName, out func))
{
if (func is IFunction3 func3 && func3.TryEvaluate(ref ctx, arg0, arg1, arg2, out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, new object[] { arg0, arg1, arg2 }, out result))
{
return(true);
}
}
result = null; return(false);
}
/// <summary>
/// Call 0-arguments function.
/// </summary>
/// <param name="functions"></param>
/// <param name="functionName"></param>
/// <param name="ctx"></param>
/// <param name="result">Object, String, Long, Double or null</param>
/// <returns>true if evaluated, false if not</returns>
/// <exception cref="Exception">On unexpected error</exception>
public static bool TryEvaluate(this IFunctions functions, string functionName, ref FunctionEvaluationContext ctx, out object result)
{
if (functions == null || functionName == null)
{
result = null; return(false);
}
IFunction func;
if (functions is IFunctionsQueryable queryable && queryable.TryGetValue(functionName, out func))
{
if (func is IFunction0 func0 && func0.TryEvaluate(ref ctx, out result))
{
return(true);
}
if (func is IFunctionN funcN && funcN.TryEvaluate(ref ctx, no_args, out result))
{
return(true);
}
}
result = null; return(false);
}
