(Interpreter): Functions with return type object don't auto-box return values

[sjbarag]

RBI allows functions to declare a return type of object that return a value of any primitive type, and automatically boxes those primitive types to their object-like versions. Effectively all return types are thus allowed from as object functions, just like with as dynamic (or not declaring a return type). The only difference is that as dynamic (or not declaring a return type) doesn't automatically box return values.

function returnsObject_359() as object
    return "foo" ' => roString("foo")
    ' or:
    ' * return 3.14159 ' => roFloat(3.14159)
    ' * return invalid ' => roInvalid
end function

function returnsDynamic_359() as dynamic
    return "foo" ' => String("foo")
    ' or:
    ' * return 3.14159 ' => Float(3.14159)
    ' * return invalid ' => Invalid
end function

sub main()
    print returnsObject_359()
    print returnsDynamic_359()
end sub

Current behavior during execution:

/path/to/issue_359.brs(2,4-10): Attempting to return value of type String, but function returnsObject_359 declares return value of type Object