refactors Timestamp, Context and ClockSequence, and adds UUIDS v6, v7, v8

.github/workflows/ci.yml

@@ -1,5 +1,9 @@
 name: Continuous integration
 
+env:
+  VERSION_FEATURES: "v1 v3 v4 v5 v6 v7"
+  STABLE_DEP_FEATURES: "serde arbitrary"
+
 on:
   pull_request:
   push:
@@ -34,13 +38,12 @@ jobs:
         - nightly
         os:
         - macos-10.15
-        - windows-2019
         - ubuntu-20.04
-        rust_target: 
+        rust_target:
         - x86_64-gnu
         - x86_64-msvc
         - x86_64-apple-darwin
-  
+
     steps:
     - name: Checkout repository
       uses: actions/checkout@v2
@@ -61,8 +64,11 @@ jobs:
     - name: Examples
       run: cargo test --all-features --examples
 
-    - name: Powerset
-      run: cargo hack test --feature-powerset --lib --optional-deps "serde arbitrary" --depth 3
+    - name: Each version feature
+      run: cargo hack test --lib --each-feature --optional-deps $STABLE_DEP_FEATURES
+
+    - name: All version features
+      run: cargo hack test --lib --each-feature --features "$VERSION_FEATURES" --optional-deps "$STABLE_DEP_FEATURES"
 
   msrv:
     name: "Tests / MSRV / OS: ${{ matrix.os }}"
@@ -71,7 +77,6 @@ jobs:
       matrix:
         os:
         - macos-10.15
-        - windows-2019
         - ubuntu-20.04
 
     steps:
@@ -86,7 +91,7 @@ jobs:
         override: true
 
     - name: Version features
-      run: cargo test --features "v1 v3 v4 v5 serde"
+      run: cargo test --features "$VERSION_FEATURES $STABLE_DEP_FEATURES"
 
   wasm:
     name: Tests / WebAssembly
@@ -102,18 +107,17 @@ jobs:
         run: wasm-pack test --node
 
       - name: Version features
-        run: wasm-pack test --node -- --features "js v1 v3 v4 v5"
-      
+        run: wasm-pack test --node -- --features "$VERION_FEATURES $STABLE_DEP_FEATURES js"
+
       - name: Fast RNG
         run: wasm-pack test --node -- --features "js v4 fast-rng"
-  
+
   mips:
     name: Tests / MIPS (Big Endian)
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
         uses: actions/checkout@v2
-
       - name: Install Rust toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -147,12 +151,11 @@ jobs:
         with:
           command: build
           args: -Z avoid-dev-deps --target thumbv6m-none-eabi --no-default-features
-
       - name: Version features
         uses: actions-rs/cargo@v1
         with:
           command: build
-          args: -Z avoid-dev-deps --target thumbv6m-none-eabi --no-default-features --features "v1 v3 v5 serde"
+          args: -Z avoid-dev-deps --target thumbv6m-none-eabi --no-default-features --features "v1 v3 v5 v6 serde"
 
   nodeps:
     name: Build / No deps
@@ -174,4 +177,63 @@ jobs:
         run: cargo install cargo-hack
 
       - name: Powerset
-        run: cargo hack check --feature-powerset -Z avoid-dev-deps
+        run: cargo hack check --each-feature -Z avoid-dev-deps
+  win_tests:
+    name: "Tests / OS: Windows 2019 - ${{ matrix.channel }}-${{ matrix.rust_target }}"
+    runs-on: windows-2019
+    env:
+      RUSTFLAGS: "--cfg uuid_unstable"
+      RUSTDOCFLAGS: "--cfg uuid_unstable"
+    strategy:
+      matrix:
+        channel:
+        - stable
+        - beta
+        - nightly
+        os:
+        - windows-2019
+        rust_target:
+        - x86_64-gnu
+        - x86_64-msvc
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Install Rust Toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        override: true
+        profile: minimal
+        toolchain: ${{ matrix.channel }}-${{ matrix.rust_target }}
+
+    - name: Install cargo-hack
+      run: cargo install cargo-hack
+
+    - name: Docs
+      run: cargo test --all-features --doc
+
+    - name: Examples
+      run: cargo test --all-features --examples
+
+    - name: Each version feature
+      run: cargo hack test --lib --each-feature --optional-deps $env:STABLE_DEP_FEATURES
+
+    - name: All version features
+      run: cargo hack test --lib --each-feature --features "$env:VERSION_FEATURES" --optional-deps "$env:STABLE_DEP_FEATURES"
+
+  win-msrv:
+    name: "Tests / MSRV / OS: Windows 2019"
+    runs-on: windows-2019
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+
+    - name: Install Rust toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: 1.57.0
+        override: true
+
+    - name: Version features
+      run: cargo test --features "$env:VERSION_FEATURES $env:STABLE_DEP_FEATURES"

Cargo.toml

@@ -51,12 +51,15 @@ repository = "uuid-rs/uuid"
 default = ["std"]
 std = []
 macro-diagnostics = ["private_uuid-macro-internal"]
-
+# NOTE: When adding new features, check the `ci.yml` workflow                                              ..
+# and include them where necessary (you can follow along with existing features)
 v1 = ["private_atomic"]
 v3 = ["md5"]
 v4 = ["rng"]
 v5 = ["sha1"]
-
+v6 = ["private_atomic"]
+v7 = ["rng"]
+v8 = []
 js = ["private_getrandom", "private_getrandom/js"]
 
 rng = ["private_getrandom"]
@@ -84,7 +87,7 @@ version = "1"
 # Public (unstable): Used in `zerocopy` derive
 # Unstable: also need RUSTFLAGS="--cfg uuid_unstable" to work
 # This feature may break between releases, or be removed entirely before
-# stabilization. 
+# stabilization.
 # See: https://github.com/uuid-rs/uuid/issues/588
 [dependencies.zerocopy]
 optional = true
@@ -133,8 +136,6 @@ version = "1.1.2"
 path = "macros"
 optional = true
 
-# Private
-# Don't depend on this optional feature directly: it may change at any time
 [dependencies.private_atomic]
 package = "atomic"
 default-features = false

src/builder.rs

@@ -67,6 +67,30 @@ impl Uuid {
         Uuid::from_bytes([0; 16])
     }
 
+    /// The 'max UUID'.
+    ///
+    /// The max UUID is a special form of UUID that is specified to have all
+    /// 128 bits set to one, as defined in [IETF RFC 4122 Update Section 5.4][Draft RFC].
+    ///
+    /// [Draft RFC]: https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04#page-12
+    ///
+    /// # Examples
+    ///
+    /// Basic usage:
+    ///
+    /// ```
+    /// # use uuid::Uuid;
+    /// let uuid = Uuid::max();
+    ///
+    /// assert_eq!(
+    ///     "ffffffff-ffff-ffff-ffff-ffffffffffff",
+    ///     uuid.hyphenated().to_string(),
+    /// );
+    /// ```
+    pub const fn max() -> Self {
+        Uuid::from_bytes([0xFF; 16])
+    }
+
     /// Creates a UUID from four field values.
     ///
     /// # Examples
@@ -283,7 +307,7 @@ impl Uuid {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::Uuid;
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -324,7 +348,7 @@ impl Uuid {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::Uuid;
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -359,7 +383,7 @@ impl Uuid {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::Uuid;
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -390,7 +414,7 @@ impl Uuid {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::Uuid;
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -422,7 +446,7 @@ impl Uuid {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::Uuid;
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -491,7 +515,7 @@ impl Builder {
     /// Basic usage:
     ///
     /// ```
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// # use uuid::{Builder, Uuid};
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
@@ -565,7 +589,7 @@ impl Builder {
     ///
     /// ```
     /// # use uuid::Builder;
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
     ///     0xb1, 0xb2,
@@ -600,7 +624,7 @@ impl Builder {
     ///
     /// ```
     /// # use uuid::Builder;
-    /// # fn main() -> Result<(), Box<dyn std::error::Error>> {
+    /// # fn main() -> Result<(), uuid::Error> {
     /// let bytes = [
     ///     0xa1, 0xa2, 0xa3, 0xa4,
     ///     0xb1, 0xb2,