RDC00107 — Implicit Variant return type

Severity: Information · Family: RDC (Rubberduck Core analyzers) · Raised by: ImplicitVariantReturnTypeAnalyzer

A function, a property getter or a Declare Function is declared without a return type, and returns a Variant.

A function with no As clause and no type-declaration character on its name returns the implicit type of its name, which is Variant unless a Def<Type> directive covers the name (MS-VBAL §5.3.1.4 Function Type Declarations). A caller cannot tell what the function returns without reading its body. The diagnostic is an opinion of the analyzer and not a condition of the language: both are legal VBA.

That a function states no return type is a fact of the way it is written: the analyzer reads it off the syntax tree, and reports the name of the function. It is a suggestion because As Variant does not change what the function returns.

How it is raised

Situation	Example	Resolution
A function, a property `Get` or a `Declare Function` has no return type.	`Function Total()`	Write the type: `Function Total() As Long`, or `As Variant` if that is intended.

Table of Contents

RDC00107 — Implicit Variant return type

How it is raised

See also