/// <summary>
/// Check if <paramref name="candidate"/> is <paramref name="symbol"/>.
/// Optimized so that the stuff that can be checked in syntax mode is done before calling get symbol.
/// </summary>
/// <param name="candidate">The <see cref="MemberAccessExpressionSyntax"/>.</param>
/// <param name="symbol">The <see cref="QualifiedField"/>.</param>
/// <param name="semanticModel">The <see cref="SemanticModel"/>.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/>.</param>
/// <returns>True if <paramref name="candidate"/> is <paramref name="symbol"/>.</returns>
public static bool IsSymbol(this MemberAccessExpressionSyntax candidate, QualifiedField symbol, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (candidate is null)
{
throw new System.ArgumentNullException(nameof(candidate));
}
if (symbol is null)
{
throw new System.ArgumentNullException(nameof(symbol));
}
return(candidate switch
{
{ Name : IdentifierNameSyntax identifier } => identifier.IsSymbol(symbol, semanticModel, cancellationToken),
/// <summary>
/// Check if <paramref name="candidate"/> is <paramref name="symbol"/>.
/// Optimized so that the stuff that can be checked in syntax mode is done before calling get symbol.
/// </summary>
/// <param name="candidate">The <see cref="IdentifierNameSyntax"/>.</param>
/// <param name="symbol">The <see cref="QualifiedField"/>.</param>
/// <param name="semanticModel">The <see cref="SemanticModel"/>.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/>.</param>
/// <returns>True if <paramref name="candidate"/> is <paramref name="symbol"/>.</returns>
public static bool IsSymbol(this IdentifierNameSyntax candidate, QualifiedField symbol, SemanticModel semanticModel, CancellationToken cancellationToken)
{
if (candidate is null)
{
throw new System.ArgumentNullException(nameof(candidate));
}
if (symbol is null)
{
throw new System.ArgumentNullException(nameof(symbol));
}
return(candidate.Identifier.ValueText == symbol.Name &&
semanticModel.TryGetSymbol(candidate, cancellationToken, out var candidateSymbol) &&
candidateSymbol == symbol);
}
/// <summary>
/// Check if <paramref name="candidate"/> is <paramref name="expected"/>.
/// </summary>
/// <param name="candidate">The <see cref="IdentifierNameSyntax"/>.</param>
/// <param name="expected">The <see cref="QualifiedField"/> to match against.</param>
/// <param name="semanticModel">The <see cref="SemanticModel"/>.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/>.</param>
/// <param name="target">The symbol of the target if match.</param>
/// <returns>True if <paramref name="candidate"/> matches <paramref name="expected"/>.</returns>
public static bool TryGetTarget(this IdentifierNameSyntax candidate, QualifiedField expected, SemanticModel semanticModel, CancellationToken cancellationToken, [NotNullWhen(true)] out IFieldSymbol?target)
{
if (candidate is null)
{
throw new System.ArgumentNullException(nameof(candidate));
}
if (expected is null)
{
throw new System.ArgumentNullException(nameof(expected));
}
target = null;
return(candidate.Identifier.ValueText == expected.Name &&
semanticModel.TryGetSymbol(candidate, cancellationToken, out target) &&
target == expected);
}
/// <summary>
/// Check if <paramref name="candidate"/> is <paramref name="expected"/>.
/// </summary>
/// <param name="candidate">The <see cref="MemberAccessExpressionSyntax"/>.</param>
/// <param name="expected">The <see cref="QualifiedField"/> to match against.</param>
/// <param name="semanticModel">The <see cref="SemanticModel"/>.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/>.</param>
/// <param name="target">The symbol of the target if match.</param>
/// <returns>True if <paramref name="candidate"/> matches <paramref name="expected"/>.</returns>
public static bool TryGetTarget(this MemberAccessExpressionSyntax candidate, QualifiedField expected, SemanticModel semanticModel, CancellationToken cancellationToken, [NotNullWhen(true)] out IFieldSymbol?target)
{
target = null;
return(candidate?.Name is IdentifierNameSyntax identifierName &&
identifierName.TryGetTarget(expected, semanticModel, cancellationToken, out target));
}