public CSharpParseOptions(
LanguageVersion languageVersion = LanguageVersion.Latest,
DocumentationMode documentationMode = DocumentationMode.Parse,
SourceCodeKind kind = SourceCodeKind.Regular,
IEnumerable <string> preprocessorSymbols = null)
: this(languageVersion.MapLatestToVersion(), documentationMode, kind, preprocessorSymbols.ToImmutableArrayOrEmpty())
{
// We test the mapped value, LanguageVersion, rather than the parameter, languageVersion,
// which has not had "Latest" mapped to the latest version yet.
if (!LanguageVersion.IsValid())
{
throw new ArgumentOutOfRangeException(nameof(languageVersion));
}
if (!kind.IsValid())
{
throw new ArgumentOutOfRangeException(nameof(kind));
}
if (preprocessorSymbols != null)
{
foreach (var preprocessorSymbol in preprocessorSymbols)
{
if (!SyntaxFacts.IsValidIdentifier(preprocessorSymbol))
{
throw new ArgumentException("preprocessorSymbols");
}
}
}
}
public CSharpParseOptions WithLanguageVersion(LanguageVersion version)
{
version = version.MapLatestToVersion();
if (version == this.LanguageVersion)
{
return(this);
}
if (!version.IsValid())
{
throw new ArgumentOutOfRangeException(nameof(version));
}
return(new CSharpParseOptions(this)
{
LanguageVersion = version
});
}