Module generic_params

Functions and structures to handle and manipulate generic parameters using the syn crate. It’s designed to support macro-driven code generation by simplifying, merging, extracting, and decomposing syn::Generics.

Re-exports

pub use super::super::generic_params;

Modules

classification

Generic parameter classification utilities.

combine

Generic parameter combination and merging utilities.

exposed

Exposed namespace of the module.

filter

Generic parameter filtering utilities.

orphan

Orphan namespace of the module.

own

Own namespace of the module.

prelude

Prelude to use essentials: use my_module::prelude::*.

Structs

DecomposedClassified

Extended decomposition result that includes classification and pre-filtered common cases.

GenericsClassification

Classification of generic parameters by their type.

GenericsRef

A wrapper around a reference to syn::Generics to provide convenient helper methods for generating token streams related to generic parameters.

GenericsWithWhere

A GenericsWithWhere struct to handle the parsing of Rust generics with an explicit where clause.

Functions

classify_generics

Classify generic parameters by their type.

decompose

Decomposes syn::Generics into components suitable for different usage contexts in Rust implementations, specifically focusing on different requirements for impl blocks and type definitions.

decompose_classified

Extended decompose that provides classified parameters.

filter_consts

Predicate to filter only const parameters.

filter_lifetimes

Predicate to filter only lifetime parameters.

filter_non_lifetimes

Predicate to filter out lifetime parameters (keeping types and consts).

filter_params

Filter generic parameters based on a predicate.

filter_types

Predicate to filter only type parameters.

merge

Merges two syn::Generics instances into a new one.

merge_params_ordered

Merge multiple parameter lists maintaining proper order (lifetimes, types, consts).

names

Extracts the names of type parameters, lifetimes, and const parameters from the given Generics.

only_names

Extracts parameter names from the given Generics, dropping bounds, defaults, and the where clause.

params_from_components

Create a new parameter list from individual components.

params_with_additional

Add parameters to existing list with smart comma handling.