Crate frunk_proc_macro_helpers

Frunk Proc Macro internals

This library holds common logic for procedural macros used by frunk

Links:

1. Source on Github
2. Crates.io page

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

Enums

• StructType

Functions

• 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.