public static string OperatorNameFromDeclaration(Syntax.InternalSyntax.OperatorDeclarationSyntax declaration)
{
var opTokenKind = declaration.OperatorToken.Kind;
if (SyntaxFacts.IsBinaryExpressionOperatorToken(opTokenKind))
{
// Some tokens may be either unary or binary operators (e.g. +, -).
if (SyntaxFacts.IsPrefixUnaryExpressionOperatorToken(opTokenKind) &&
declaration.ParameterList.Parameters.Count == 1)
{
return(OperatorFacts.UnaryOperatorNameFromSyntaxKind(opTokenKind));
}
return(OperatorFacts.BinaryOperatorNameFromSyntaxKind(opTokenKind));
}
else if (SyntaxFacts.IsUnaryOperatorDeclarationToken(opTokenKind))
{
return(OperatorFacts.UnaryOperatorNameFromSyntaxKind(opTokenKind));
}
else
{
// fallback for error recovery
return(WellKnownMemberNames.UnaryPlusOperatorName);
}
}
public static string OperatorNameFromDeclaration(Syntax.InternalSyntax.OperatorDeclarationSyntax declaration)
{
var opTokenKind = declaration.OperatorToken.Kind;
bool isChecked = declaration.CheckedKeyword?.Kind == SyntaxKind.CheckedKeyword;
if (SyntaxFacts.IsBinaryExpressionOperatorToken(opTokenKind))
{
// Some tokens may be either unary or binary operators (e.g. +, -).
if (opTokenKind != SyntaxKind.AsteriskToken && // IsPrefixUnaryExpressionOperatorToken treats it as pointer dereference operator
SyntaxFacts.IsPrefixUnaryExpressionOperatorToken(opTokenKind) &&
declaration.ParameterList.Parameters.Count == 1)
{
return(OperatorFacts.UnaryOperatorNameFromSyntaxKind(opTokenKind, isChecked));
}
return(OperatorFacts.BinaryOperatorNameFromSyntaxKind(opTokenKind, isChecked));
}
else if (SyntaxFacts.IsUnaryOperatorDeclarationToken(opTokenKind))
{
return(OperatorFacts.UnaryOperatorNameFromSyntaxKind(opTokenKind, isChecked));
}
else
{
// fallback for error recovery
return(WellKnownMemberNames.UnaryPlusOperatorName);
}
}