Changelog

v0.8.6 (March 18, 2019)

• Added “did you mean” suggestions for unknown fields behind the suggestions flag #60
• Added Error::unknown_field_with_alts to support the suggestion use-case.
• Added ast::Fields::len and ast::Fields::is_empty methods.

v0.8.5 (February 4, 2019)

• Accept unquoted positive numeric literals #52
• Add FromMeta to the syn::Lit enum and its variants
• Improve error message for unexpected literal formats to not say “other”

v0.8.4 (February 4, 2019)

• Use syn::Error to provide precise errors before proc_macro::Diagnostic is available
• Add diagnostics feature flag to toggle between stable and unstable error backends
• Attach error information in more contexts
• Add allow_unknown_fields to support parsing the same attribute multiple times for different macros #51
• Proc-macro authors will now see better errors in darling attributes

v0.8.3 (January 21, 2019)

• Attach spans to errors in generated trait impls #37
• Attach spans to errors for types with provided bespoke implementations
• Deprecate set_span from 0.8.2, as spans should never be broadened after being initially set

v0.8.2 (January 17, 2019)

• Add spans to errors to make quality warnings and errors easy in darling. This is blocked on diagnostics stabilizing.
• Add darling::util::SpannedValue so proc-macro authors can remember position information alongside parsed values.

v0.8.0

• Update dependency on syn to 0.15 #44. Thanks to @hcpl

v0.7.0 (July 24, 2018)

• Update dependencies on syn and proc-macro2
• Add util::IdentString, which acts as an Ident or its string equivalent

v0.6.3 (May 22, 2018)

• Add support for Uses* traits in where predicates

v0.6.2 (May 22, 2018)

• Add usage module for tracking type param and lifetime usage in generic declarations
  • Add UsesTypeParams and CollectsTypeParams traits #37
  • Add UsesLifetimes and CollectLifetimes traits #41
• Don't add FromMeta bounds to type parameters only used by skipped fields #40

v0.6.1 (May 17, 2018)

• Fix an issue where the syn update broke shape validation #36

v0.6.0 (May 15, 2018)

Breaking Changes

• Renamed FromMetaItem to FromMeta, and renamed from_meta_item method to from_meta
• Added dedicated derive(FromMetaItem) which panics and redirects users to FromMeta

v0.5.0 (May 10, 2018)

• Add ast::Generics and ast::GenericParam to work with generics in a manner similar to ast::Data
• Add ast::GenericParamExt to support alternate representations of generic parameters
• Add util::WithOriginal to get a parsed representation and syn's own struct for a syntax block
• Add FromGenerics and FromGenericParam traits (without derive support)
• Change generated code for generics magic field to invoke FromGenerics trait during parsing
• Add FromTypeParam trait #30. Thanks to @upsuper

v0.4.0 (April 5, 2018)

• Update dependencies on proc-macro, quote, and syn #26. Thanks to @hcpl

v0.3.3 (April 2, 2018)

YANKED

v0.3.2 (March 13, 2018)

• Derive Default on darling::Ignored (fixes #25).

v0.3.1 (March 7, 2018)

• Support proc-macro2/nightly #24. Thanks to @kdy1

v0.3.0 (January 26, 2018)

Breaking Changes

• Update syn to 0.12 #20. Thanks to @Eijebong
• Update quote to 0.4 #20. Thanks to @Eijebong
• Rename magic field body in derived FromDeriveInput structs to data to stay in sync with syn
• Rename magic field data in derived FromVariant structs to fields to stay in sync with syn

v0.2.2 (December 5, 2017)

• Update lazy_static to 1.0 #15. Thanks to @Eijebong

v0.2.1 (November 28, 2017)

• Add impl FromMetaItem for integer types #15

v0.2.0 (June 18, 2017)

• Added support for returning multiple errors from parsing #5
• Derived impls no longer return on first error #5
• Removed default types for V and F from ast::Body
• Enum variants are automatically converted to snake_case #12