Crate amplify_syn

Expand description

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

§Examples

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

Macros§

ident: Convenience macro for constructing syn::Ident from literals
path: Convenience macro for constructing syn::Path from literals

Structs§

AttrReq: Structure requirements for parametrized attribute
DataType
Field
Items
MetaArgList: Drop-in replacement for syn::NestedMeta, which allows to parse attributes which can have arguments made of either literal, path or MetaArgNameValue expressions.
MetaArgNameValue: Drop-in replacement for syn::MetaNameValue used for parsing named arguments inside attributes which name is always an proc_macro2::Ident (and not syn::Path) and value can be not only a literal, but of any valid rust type.
NamedField
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.
Variant

Enums§

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
ArgValueReq: Requirements for attribute or named argument value presence
Attr: Internal structure representation of a proc macro attribute collected instances having some specific name (accessible via Attr::name()).
DataInner
EnumKind
Error: Errors representing inconsistency in proc macro attribute structure
FieldKind
Fields
ListReq: Requirements for list elements. For instance, used in AttrReq for providing crate::ParametrizedAttr fields requirements.
LiteralClass: Constrains for literal value type
MetaArg: Drop-in replacement for syn::NestedMeta, which allows to parse attributes which can have arguments made of either literal, path or MetaArgNameValue expressions.
Scope
TypeClass: Constrains for the possible types that a Rust value could have.
ValueClass: Constrains for attribute value type
ValueReq: Requirements for attribute or named argument value presence for a values with known class. If the value class is not known, use ArgValueReq instead.
Vis

Traits§