v3.4.0

Added

• Convenience methods num_of_policies() and num_of_templates() to see how
  many policies and templates a policy set has (#1180)
• Entity is now Hash. The hash implementation compares the hash of
  the entity UID (#1186)

Fixed

• (*) Entities::from_entities() will now correctly reject record
  attributes with superfluous attributes. (#1177, resolving #1176)

v2.5.0

Added

• Convenience methods num_of_policies() and num_of_templates() to see how many policies and templates a policy set has (#1180)

v3.3.0

Release 3.3.0, available on crates.io

Added

• JSON representation for Policy Sets, along with methods like
  ::from_json_value/file/str and ::to_json for PolicySet. (#783,
  resolving #549)
• Methods for reading and writing individual Entitys as JSON (#924,
  resolving #807)
• Context::into_iter to get the contents of a Context and Context::merge
  to combine Contexts, returning an error on duplicate keys (#1027,
  resolving #1013)
• Several new APIs for schemas to allow accessing principal and resource
  types, action entity uids, etc. (#1141, resolving #1134)

Changed

• Added deprecation warnings to APIs that will be removed in the upcoming 4.0
  release, as well as wrapper methods with the new names, where appropriate.
  See the notes under that release for more details. (#1128)
• Reduced precision of partial evaluation for ||, &&, and conditional
  expressions. if { foo : <unknown> }.foo then 1 + "hi" else false now
  evaluates to if <unknown> then 1 + "hi" else false. (#874)
• Removed the error extension function, which was previously used during
  partial evaluation. (#874)

Fixed

• (*) JSON format Cedar policies will now fail to parse if the action scope
  constraint contains a non-action entity type, matching the behavior for
  human-readable Cedar policies. (#943, resolving #925)
• Template parsing functions (e.g., Template::parse()) will now fail when
  passed a static policy as input. Use the Policy parsing functions instead.
  (#1108, resolving #1095)

v3.2.4

Release 3.2.4, available on crates.io

Fixed

• JSON format Cedar policies will now fail to parse if any annotations are not
  valid Cedar identifiers. (#1004, resolving #994)
• unknown() is no longer a valid extension function if partial-eval
  is not enabled as a feature. (#1101, resolving #1096)

v3.2.1

Release 3.2.1, available on crates.io

Fixed

• Fixed policy formatter dropping newlines in string literals. (#870, #910, resolving #862)
• Fixed a performance issue when constructing an error for accessing
  a non-existent attribute on sufficiently large records (#887, resolving #754)
• Fixed identifier parsing in human-readable schemas (#914, resolving #913)
• Fixed the typescript generated type for ffi::AuthorizationCall to remove
  unsupported string option (#939)
• Fixed Wasm build script to be multi-target in JS ecosystem (#933)

v2.4.7

Release v2.4.7, available on crates.io.

Fixed

• Fixed policy formatter reordering some comments around if-then-else and
  entity identifier expressions. (#861, resolving #787)
• Fixed policy formatter dropping newlines in string literals. (#870, #910, resolving #862)

v3.2.0

Release 3.2.0, available on crates.io

Added

• Expression::new_ip, Expression::new_decimal, RestrictedExpression::new_ip,
  and RestrictedExpression::new_decimal (#661, resolving #659)
• Entities::into_iter (#713, resolving #680)
• Entity::into_inner (#685, resolving #636)
• New ffi module with an improved FFI interface. This will replace the
  frontend module in the 4.0 release, but is available now for early adopters;
  the frontend module is now deprecated.
  This should be considered a preview-release of ffi; more API breaking
  changes are anticipated for Cedar 4.0. (#852)
• wasm Cargo feature for targeting Wasm (and the cedar-wasm crate was added
  to this repo).
  This should be considered a preview-release of cedar-wasm; more API
  breaking changes are anticipated for Cedar 4.0. (#858)

Changed

• Common type definitions in both human-readable and JSON schemas may now
  reference other common type definitions. There may not be any cycles formed by
  these references. (#766, resolving #154)
• Improved validation error messages when incompatible types appear in
  if, ==, contains, containsAll, and containsAny expressions. (#809, resolving #346)
• Deprecated error TypeErrorKind::ImpossiblePolicy in favor of warning
  ValidationWarningKind::ImpossiblePolicy so future improvements to Cedar
  typing precision will not result in breaking changes. (#716, resolving #539)
• Rework API for the partial-eval experimental feature (#714, #817, #838).
• Validation errors for unknown entity types and action entities now
  report the precise source location where the unknown type was encountered.
  Error for invalid use of an action now includes a source location containing
  the offending policy. (#802, #808, resolving #522)
• Deprecated the frontend module in favor of the new ffi module. The
  frontend module will be removed from cedar-policy in the next major version.
  See notes above about ffi. (#852)
• Deprecated the integration testing harness code. It will be removed from the
  cedar-policy crate in the next major version. (#707)

Fixed

• Validation error message for an invalid attribute access now reports the
  correct attribute and entity type when accessing an optional attribute that is
  itself an entity. (#811)
• The error message returned when parsing an invalid action scope constraint
  action == ?action no longer suggests that action == [...] would be a
  valid scope constraint. (#818, resolving #563)
• Fixed policy formatter reordering some comments around if-then-else and
  entity identifier expressions. (#861, resolving #787)

Full Changelog: v3.1.4...v3.2.0

v3.1.4

Release 3.1.4, available on crates.io

Fixed

• The formatter will now fail with an error if it changes a policy's semantics. (#865)

Full Changelog: v3.1.3...v3.1.4

v2.4.6

Release 2.4.6, available on crates.io

Fixed

• The formatter will now fail with an error if it changes a policy's semantics. (#865)

Full Changelog: v2.4.5...v2.4.6

v3.1.3

Release 3.1.3, available on crates.io

Changed

• Improve parser errors on unexpected tokens. (#698, partially resolving #176)
• Validation error messages render types in the new, more readable, schema
  syntax. (#708, resolving #242)
• Improved error messages when null occurs in entity json data. (#751,
  resolving #530)
• Improved source location reporting for error found template slot in a when clause.
  (#758, resolving #736)
• Improved Display implementation for Cedar schemas, both JSON and human
  syntax. (#780)
• The CLI translate-schema command now produces prettier output.

Fixed

• Support identifiers in context declarations in the human-readable schema
  format. (#734, resolving #681)

Full Changelog: v3.1.2...v3.1.3