Crate frunk_proc_macro_helpers

Expand description

Frunk Proc Macro internals

This library holds common logic for procedural macros used by frunk

Links:

Structs§

FieldBinding
FieldBindings: Represents the binding of a struct or enum variant’s fields to a corresponding set of similarly named local variables.
VariantBinding
VariantBindings

build_coprod_constr: Given an index and an expression or pattern, creates an AST for the corresponding Coproduct constructor, which may itself be used as an expression or a pattern.
build_coprod_type: Given a list of types, creates an AST for the corresponding Coproduct type.
build_coprod_unreachable_arm: Given the length of a Coproduct type, generates an “unreachable” match arm, matching the CNil case in order to work around limitations in the compiler’s exhaustiveness checking.
build_field_expr
build_field_pat
build_field_type
build_hlist_constr: Given a list of expressions or patterns, creates an AST for the corresponding HList constructor, which may itself be used as an expression or a pattern.
build_hlist_type: Given a list of types, creates an AST for the corresponding HList type.
build_label_type: Given an Ident returns an AST for its type level representation based on the enums generated in frunk_core::labelled.
build_path_type
call_site_ident: Returns an Ident
find_idents_in_expr: Returns the idents in a path like expression in reverse
ref_generics
to_ast: Parses a TokenStream (usually received as input into a custom derive function), into a syn MacroInput AST, which is nice.