public override SyntaxNode VisitFieldDeclaration(FieldDeclarationSyntax node)
{
node = (FieldDeclarationSyntax)base.VisitFieldDeclaration(node).NotNull();
var initializerValue = node.GetSingleDeclarator().Initializer?.Value;
if (initializerValue != null)
{
node = node.WithDeclaration(node.Declaration
.WithType(initializerValue.GetExpressionType()));
}
return(node);
}
public override SyntaxNode VisitFieldDeclaration(FieldDeclarationSyntax node)
{
if (node.Parent is not CompilationUnitSyntax)
{
return(node);
}
var variableDeclarator = node.GetSingleDeclarator();
var invocationExpression = variableDeclarator.Initializer?.Value as InvocationExpressionSyntax;
if (invocationExpression?.GetIdentifierName() != "Argument")
{
return(node);
}
var originalNode = node;
var resolutionName = invocationExpression.GetArgumentAt <LiteralExpressionSyntax>(0).GetConstantValue <string>();
var defaultValue = invocationExpression.GetArgumentAt <ExpressionSyntax>(1);
var nonDefaultValue = defaultValue is LiteralExpressionSyntax literalExpression
? literalExpression.GetNonDefaultValue()
: defaultValue;
AttributeListSyntax CreateAttributeListWith(string name, string argument = null)
{
var attribute = Attribute(IdentifierName(name));
if (argument != null)
{
attribute = attribute.WithArgumentList(AttributeArgumentList(
SeparatedList(new[] { AttributeArgument(argument.ToLiteralExpression()) })));
}
return(AttributeList(SeparatedList(new[] { attribute })));
}
node = node.WithoutTrivia();
node = node.AddAttributeLists(
CreateAttributeListWith(
"Parameter",
!resolutionName.Replace("_", string.Empty).Replace("-", string.Empty)
.EqualsOrdinalIgnoreCase(variableDeclarator.Identifier.Text)
? resolutionName
: null));
node = node.WithDeclaration(
node.Declaration.WithType(
variableDeclarator.Identifier.Text.ContainsAnyOrdinalIgnoreCase("path", "dir", "file")
? ParseTypeName(nameof(AbsolutePath))
: invocationExpression.GetSingleGenericArgumentOrNull() ?? defaultValue.GetExpressionType()));
node = node.WithDeclaration(
node.Declaration
.WithVariables(
SeparatedList(node.Declaration.Variables
.Select(x => x.WithInitializer(nonDefaultValue != null
? EqualsValueClause(nonDefaultValue)
: null)))));
node = node.WithModifiers(TokenList(Token(SyntaxKind.ReadOnlyKeyword)));
if (variableDeclarator.Identifier.Text.ContainsAnyOrdinalIgnoreCase("password", "key", "token", "secret", "credentials"))
{
node = node.AddAttributeLists(CreateAttributeListWith("Secret"));
}
return(node.WithTriviaFrom(originalNode));
}