Refactor PATCH operations, add filter parser, and parameterize ID types

.github/workflows/build.yml

@@ -22,5 +22,16 @@ jobs:
         run: cargo check
       - name: Cargo Test
         run: cargo test
+      - name: Cargo Clippy
+        run: cargo clippy -- -D warnings
       - name: Cargo format
         run: cargo fmt --check
+      - name: Verify generated filter parser
+        run: |
+          cargo install lalrpop --version 0.23.1
+          lalrpop src/filter_parser.lalrpop
+          git diff --exit-code src/filter_parser.rs || {
+            echo "::error::src/filter_parser.rs does not match regenerated output from src/filter_parser.lalrpop"
+            echo "Run 'lalrpop src/filter_parser.lalrpop' and commit the result."
+            exit 1
+          }

CHANGELOG.md

@@ -0,0 +1,20 @@
+# CHANGELOG
+
+## 0.4
+
+### Breaking Changes
+- Refactor `PatchOperation` into a tagged enum (`Add`, `Remove`, `Replace`) with `OperationTarget` variants (`WithPath`, `WithoutPath`), replacing the old `PatchOperations` struct. Paths are now parsed as `PatchPath` filter expressions instead of raw strings.
+- Parameterize ID types on `User`, `Group`, `Member`, `Resource`, and `ListResponse` (default type parameter is `String`, so unparameterized usage is unchanged)
+- `Member.type` changed from `Option<String>` to `Option<MemberType>` enum
+- Remove `TryFrom<&str>` impls on `User` and `Group`; use `serde_json::from_str` directly
+- Remove `Default` impls on `Group`, `ListResponse`, and `PatchOp`
+
+### Added
+- SCIM filter expression parser (`filter` module, RFC 7644 §3.4.2.2); `SearchRequest` and `ListQuery` now include an optional `filter` field
+- Case-insensitive deserialization of `PatchOperation` ops and `MemberType` for Entra compatibility
+- Lenient `bool` deserialization (accepts `"true"`/`"false"` strings) on fields like `Role.primary`
+
+## 0.3
+
+- Add `externalId` to user and group entities
+- **Breaking** - Uses raw identifiers, converting `type_` to `r#type`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "scim_v2"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2024"
 authors = ["Dan Gericke <dan@shiftcontrol.io>"]
 description = "A crate that provides utilities for working with the System for Cross-domain Identity Management (SCIM) version 2.0 protocol. (rfc7642, rfc7643, rfc7644)"
@@ -13,9 +13,14 @@ rust-version = "1.85"
 [dependencies]
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.145"
+lalrpop-util = { version = "0.23.1", features = ["lexer"] }
+fluent-uri = "0.4.1"
+thiserror = "2.0.18"
 
 [dev-dependencies]
 pretty_assertions = "1.4.1"
+test-case = "3.3.1"
+uuid = { version = "1.22.0", features = ["serde"]}
 
 [lib]
 doc-scrape-examples = true

README.md

@@ -93,10 +93,25 @@ Err(e) => println !("Deserialization error: {}", e),
 
 For more examples and usage details, refer to the documentation of each function and struct.
 
+## Regenerating the filter parser
+
+The SCIM filter parser (`src/filter_parser.rs`) is pre-generated from `src/filter_parser.lalrpop`
+using [LALRPOP](https://github.com/lalrpop/lalrpop). The generated file is committed
+to the repository so no build script is required.
+
+If you modify `src/filter_parser.lalrpop`, regenerate `src/filter_parser.rs` by running:
+
+```sh
+cargo install lalrpop
+lalrpop src/filter_parser.lalrpop
+```
+
+Commit both `src/filter_parser.lalrpop` and the updated `src/filter_parser.rs` together.
+
 ## Contributing
 
 Contributions are welcome! Please feel free to submit a Pull Request.
 
 ## License
 
-[MIT](https://choosealicense.com/licenses/mit/)
+[MIT](https://choosealicense.com/licenses/mit/)