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CHANGELOG.md

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Changelog

Unreleased

  • Derived impls of FromMeta will now error on literals, rather than silently ignoring them. #193
  • Don't include property paths in compile errors when spans are available.

v0.14.1 (April 28, 2022)

  • Fix a bug where using a trait that accepts #[darling(attributes(...))] without specifying any attributes would emit code that did not compile. #183
  • Impl Clone for darling::Error #184
  • Impl From<darling::Error> for syn::Error #184
  • Add Error::span and Error::explicit_span methods #184

v0.14.0 (April 13, 2022)

  • BREAKING CHANGE: Remove many trait impls from util::Flag. This type had a number of deref and operator impls that made it usable as sort-of-a-boolean. Real-world usage showed this type is more useful if it's able to carry a span for good errors, and that most of those impls were unnecessary. #179
  • Remove need for #[darling(default)] on Option<T> and Flag fields #161
  • Improve validation of enum shapes #178
  • Bump proc-macro2 dependency to 1.0.37 #180
  • Bump quote dependency to 1.0.18 #180
  • Bump syn dependency to 1.0.91 #180

v0.13.4 (April 6, 2022)

  • Impl FromMeta for syn::Visibility #173

v0.13.3 (April 5, 2022)

  • Add error::Accumulator for dealing with multiple errors #164
  • Impl FromMeta for syn::Type and its variants #172

v0.13.2 (March 30, 2022)

  • Impl FromMeta for syn::ExprPath #169

v0.13.1 (December 7, 2021)

  • Add FromAttributes trait and macro #151

v0.13.0 (May 20, 2021)

  • Update darling to 2018 edition #129
  • Error on duplicate fields in #[darling(...)] attributes #130
  • Impl Copy for SpannedValue<T: Copy>
  • Add SpannedValue::map_ref

v0.13.0-beta (April 20, 2021)

  • Update darling to 2018 edition #129
  • Error on duplicate fields in #[darling(...)] attributes #130

v0.12.4 (April 20, 2021)

  • Add and_then to derive macros for darling

v0.12.3 (April 8, 2021)

  • Fix FromMeta impl for char not to panic #126

v0.12.2 (February 23, 2021)

  • Impl FromMeta for HashMap<Ident, V> and HashMap<Path, V>

v0.12.1 (February 22, 2021)

  • Impl FromMeta for syn::ExprArray #122
  • Remove use of unreachable from darling::ast::Data #123
  • Add darling::ast::Data::try_empty_from to avoid panics when trying to read a union body #123

v0.12.0 (January 5, 2021)

  • POSSIBLY BREAKING: Derived impls of FromDeriveInput, FromField, FromVariant, and FromTypeParam will now error when encountering an attribute darling has been asked to parse that isn't a supported shape. Any crates using darling that relied on those attributes being silently ignored could see new errors reported in their dependent crates. #113
  • Impl syn::spanned::Spanned for darling::util::SpannedValue #113
  • Add darling::util::parse_attribute_to_meta_list to provide useful errors during attribute parsing #113
  • Add impl From<syn::Error> for Error to losslessly propagate syn errors #116

v0.11.0 (December 14, 2020)

  • Bump minor version due to unexpected breaking change #107

v0.10.3 (December 10, 2020)

  • Add discriminant magic field when deriving FromVariant #105

v0.10.2 (October 30, 2019)

  • Bump syn dependency to 1.0.1 #83

v0.10.1 (September 25, 2019)

  • Fix test compilation errors #81

v0.10.0 (August 15, 2019)

  • Bump syn and quote to 1.0 #79
  • Increase rust version to 1.31

v0.9.0 (March 20, 2019)

  • Enable "did you mean" suggestions by default
  • Make darling_core::{codegen, options} private #58
  • Fix Override::as_mut: #66

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