public static bool TryParseModifier(
IEnumerable <string> values,
string optionName,
[NotNullWhen(true)] out EnumerableModifier <string>?modifier)
{
modifier = null;
if (!values.Any())
{
return(false);
}
string value = values.First();
if (!TryParseAsEnumFlags(
values.Skip(1),
optionName,
out ModifierOptions options,
ModifierOptions.None,
OptionValueProviders.ModifierOptionsProvider))
{
return(false);
}
if ((options & ModifierOptions.FromFile) != 0 &&
!FileSystemHelpers.TryReadAllText(value, out value !, ex => WriteError(ex)))
{
return(false);
}
if ((options & ModifierOptions.FromDll) != 0)
{
return(DelegateFactory.TryCreateFromAssembly(
value,
typeof(IEnumerable <string>),
typeof(IEnumerable <string>),
out modifier));
}
else if ((options & ModifierOptions.FromFile) != 0)
{
return(DelegateFactory.TryCreateFromSourceText(
value,
typeof(IEnumerable <string>),
typeof(IEnumerable <string>),
out modifier));
}
else
{
return(DelegateFactory.TryCreateFromExpression(
value,
"ModifierClass",
"ModifierMethod",
"IEnumerable<string>",
typeof(IEnumerable <string>),
"IEnumerable<string>",
typeof(IEnumerable <string>),
"items",
out modifier));
}
}
public static bool TryParseReplacement(
IEnumerable <string> values,
out string?replacement,
out MatchEvaluator?matchEvaluator)
{
replacement = null;
matchEvaluator = null;
if (!values.Any())
{
return(true);
}
string value = values.First();
if (!TryParseAsEnumFlags(
values.Skip(1),
OptionNames.Replacement,
out ReplacementOptions options,
ReplacementOptions.None,
OptionValueProviders.ReplacementOptionsProvider))
{
return(false);
}
if ((options & ReplacementOptions.FromFile) != 0 &&
!FileSystemHelpers.TryReadAllText(value, out value !, ex => WriteError(ex)))
{
return(false);
}
if ((options & ReplacementOptions.CSharp) != 0)
{
if ((options & ReplacementOptions.FromFile) != 0)
{
return(DelegateFactory.TryCreateFromSourceText(value, typeof(string), typeof(Match), out matchEvaluator));
}
else
{
return(DelegateFactory.TryCreateFromExpression(
value,
"EvaluatorClass",
"EvaluatorMethod",
"string",
typeof(string),
"Match",
typeof(Match),
"match",
out matchEvaluator));
}
}
else if ((options & ReplacementOptions.FromDll) != 0)
{
return(DelegateFactory.TryCreateFromAssembly(value, typeof(string), typeof(Match), out matchEvaluator));
}
else
{
replacement = value;
if ((options & ReplacementOptions.Literal) != 0)
{
replacement = RegexEscape.EscapeSubstitution(replacement);
}
if ((options & ReplacementOptions.Escape) != 0)
{
replacement = RegexEscape.ConvertCharacterEscapes(replacement);
}
}
return(true);
}
