Crate amplify_derive_helpers

Expand description

Amplifying Rust language capabilities: helper functions for creating proc macro libraries

§Examples

#[name] - single form #[name = "literal"] - optional single value #[name = TypeName] #[name("literal", TypeName)] - list of arguments

AttrReq: Structure requirements for parametrized attribute
ParametrizedAttr: Representation for all allowed forms of #[attr(...)] attribute. If attribute has a multiple occurrences they are all assembled into a single list. Repeated named arguments are not allowed and result in errors.
SingularAttr: Structure describing a procedural macro attribute with an optional value. The means that if one has something like #[name1], #[name2 = "value"], #[name3 = ::std::path::PathBuf)] than name1, name2 = "value", and name3 = ::std::path::PathBuf are three different attributes which can be parsed and represented by the SingularAttr structure.

ArgValue: Value for attribute or attribute argument, i.e. for #[attr = value] and #[attr(arg = value)] this is the value part of the attribute. Can be either a single literal or a single valid rust type name
Attr: Structure representing internal structure of collected instances of a proc macro attribute having some specific name (accessible via Attr::name()).
Error: Errors representing inconsistency in proc macro attribute structure
ListReq
LitReq
ValueReq: Requirements for attribute or named argument value presence