public T GetOptionValue <T>(string optionName, DiagnosticDescriptor rule, TryParseValue <T> tryParseValue, T defaultValue)
{
if (ReferenceEquals(this, Empty))
{
return(defaultValue);
}
return((T)_computedOptionValuesMap.GetOrAdd($"{rule.Id}.{optionName}", _ => ComputeOptionValue(optionName, rule, tryParseValue, defaultValue)) !);
}
/// <summary>
/// Creates an argument parser for a many-valued argument using a parser that operates on each string value.
/// </summary>
/// <typeparam name="T">The type of the parsed value.</typeparam>
/// <param name="parse">The string parser.</param>
/// <returns>The argument parser.</returns>
internal static ParseArgument <IEnumerable <T> > ParseArgumentsWith <T>(TryParseValue <T> parse) => argument =>
{
var optionName = ((OptionResult)argument.Parent).Token.Value;
var validation = argument.Tokens.Select(token => parse(token.Value, optionName)).Sequence();
if (validation.IsFailure)
{
argument.ErrorMessage = validation.ErrorMessage;
}
return(validation.ValueOrDefault);
};
public static bool TryParse(string text, TryParseValue valueParser, out Range <T> range)
{
const string pattern = @"(\[|\()([^,]*)\s*,\s*([^\)\]]*)(\)|\])";
var match = Regex.Match(text, pattern);
if (match.Success)
{
string leftBracket = match.Groups[1].Value;
string fromStr = match.Groups[2].Value;
string toStr = match.Groups[3].Value;
string rightBracket = match.Groups[4].Value;
bool isFromInclusive = leftBracket.Equals("[");
bool isToInclusive = rightBracket.Equals("]");
T from;
T to;
if (valueParser(fromStr, out from) &&
valueParser(toStr, out to) &&
from.CompareTo(to) <= 0)
{
range = new Range <T>(from, to, isFromInclusive, isToInclusive);
return(true);
}
}
else
{
T value;
bool isSuccessful = valueParser(text, out value);
if (isSuccessful)
{
range = new Range <T>(value, value);
return(true);
}
}
range = new Range <T>(default(T), default(T));
return(false);
}
/// <summary>
/// Creates an argument parser for a single-valued argument using a parser that operates on the string value.
/// </summary>
/// <typeparam name="T">The type of the parsed value.</typeparam>
/// <param name="parse">The string parser.</param>
/// <returns>The argument parser.</returns>
internal static ParseArgument <T> ParseArgumentWith <T>(TryParseValue <T> parse) => argument =>
{
var values = ParseArgumentsWith(parse)(argument);
return(values == null ? default : values.Single());
};
private T ComputeOptionValue <T>(string optionName, DiagnosticDescriptor rule, TryParseValue <T> tryParseValue, T defaultValue)
{
if (TryGetSpecificOptionValue(rule.Id, out var optionValue) ||
TryGetSpecificOptionValue(rule.Category, out optionValue) ||
TryGetAnySpecificOptionValue(rule.CustomTags, out optionValue) ||
TryGetGeneralOptionValue(out optionValue))
{
return(optionValue);
}
return(defaultValue);
// Local functions.
bool TryGetSpecificOptionValue(string specificOptionKey, out T specificOptionValue)
{
if (SpecificOptions.TryGetValue(specificOptionKey, out var specificRuleOptions) &&
specificRuleOptions.TryGetValue(optionName, out var valueString))
{
return(tryParseValue(valueString, out specificOptionValue));
}
specificOptionValue = defaultValue;
return(false);
}
bool TryGetAnySpecificOptionValue(IEnumerable <string> specificOptionKeys, out T specificOptionValue)
{
foreach (var specificOptionKey in specificOptionKeys)
{
if (TryGetSpecificOptionValue(specificOptionKey, out specificOptionValue))
{
return(true);
}
}
specificOptionValue = defaultValue;
return(false);
}
bool TryGetGeneralOptionValue(out T generalOptionValue)
{
if (GeneralOptions.TryGetValue(optionName, out var valueString))
{
return(tryParseValue(valueString, out generalOptionValue));
}
generalOptionValue = defaultValue;
return(false);
}
}
private T ComputeOptionValue <T>(string optionName, DiagnosticDescriptor rule, TryParseValue <T> tryParseValue, T defaultValue)
{
if (TryGetSpecificOptionValue(rule.Id, out var optionValue) ||
TryGetSpecificOptionValue(rule.Category, out optionValue) ||
TryGetGeneralOptionValue(out optionValue))
{
return(optionValue);
}
return(defaultValue);
// Local functions.
#pragma warning disable IDE0060 // Remove unused parameter - https://github.com/dotnet/roslyn/issues/32973
bool TryGetSpecificOptionValue(string specificOptionKey, out T specificOptionValue)
#pragma warning restore IDE0060 // Remove unused parameter
{
if (SpecificOptions.TryGetValue(specificOptionKey, out var specificRuleOptions) &&
specificRuleOptions.TryGetValue(optionName, out var valueString))
{
return(tryParseValue(valueString, out specificOptionValue));
}
specificOptionValue = defaultValue;
return(false);
}
#pragma warning disable IDE0060 // Remove unused parameter - https://github.com/dotnet/roslyn/issues/32973
bool TryGetGeneralOptionValue(out T generalOptionValue)
#pragma warning restore IDE0060 // Remove unused parameter
{
if (GeneralOptions.TryGetValue(optionName, out var valueString))
{
return(tryParseValue(valueString, out generalOptionValue));
}
generalOptionValue = defaultValue;
return(false);
}
}
