diff options
Diffstat (limited to 'mingling/src')
| -rw-r--r-- | mingling/src/example_docs.rs | 202 | ||||
| -rw-r--r-- | mingling/src/gen_program.rs | 5 | ||||
| -rw-r--r-- | mingling/src/lib.rs | 7 | ||||
| -rw-r--r-- | mingling/src/metadata.rs | 1 |
4 files changed, 215 insertions, 0 deletions
diff --git a/mingling/src/example_docs.rs b/mingling/src/example_docs.rs index cb6bbe7..e61551b 100644 --- a/mingling/src/example_docs.rs +++ b/mingling/src/example_docs.rs @@ -768,6 +768,71 @@ pub mod example_clap_binding {} /// gen_program!(); /// ``` pub mod example_combine_pathf_dispatch_tree {} +/// Example: Combining pathf + entry metadata +/// +/// > Demonstrates combining the `pathf` feature with entry metadata. The metadata +/// > `DataType` (`Description`) and the dispatchers/entries are defined in the `sub` +/// > module. Thanks to `pathf`, `gen_program!()` resolves these types across +/// > modules automatically, so `main` stays minimal. +/// +/// Run: +/// ```bash +/// cargo run --manifest-path examples/example-combine-pathf-metadata/Cargo.toml --quiet -- hello Alice +/// cargo run --manifest-path examples/example-combine-pathf-metadata/Cargo.toml --quiet -- hello +/// cargo run --manifest-path examples/example-combine-pathf-metadata/Cargo.toml --quiet -- desc +/// ``` +/// +/// Output: +/// ```plaintext +/// Hello, Alice! +/// Hello, World! +/// EntryHello desc = okay +/// ``` +/// +/// Source code (./Cargo.toml) +/// ```toml +/// [package] +/// name = "example-combine-pathf-metadata" +/// version = "0.1.0" +/// edition = "2024" +/// +/// [dependencies.mingling] +/// path = "../../mingling" +/// features = [ +/// # `extras` is required by the implicit `dispatcher!("hello")` form +/// "extras", +/// # `pathf` resolves types across modules at build time +/// "pathf", +/// ] +/// +/// [build-dependencies.mingling] +/// path = "../../mingling" +/// features = [ +/// # Enable the `build` feature for build-time support +/// "build", +/// # `pathf` must also be enabled in build-dependencies +/// "pathf", +/// ] +/// +/// [workspace] +/// ``` +/// +/// Source code (./src/main.rs) +/// ```ignore +/// mod sub; +/// +/// use mingling::prelude::*; +/// +/// fn main() { +/// let mut program = ThisProgram::new(); +/// program.with_dispatcher(sub::CMDHello); +/// program.with_dispatcher(sub::CMDDescription); +/// program.exec_and_exit(); +/// } +/// +/// gen_program!(); +/// ``` +pub mod example_combine_pathf_metadata {} /// Example Command Macro /// /// > Introduced how to use the `#[command]` macro to generate commands with minimal boilerplate @@ -1935,6 +2000,143 @@ pub mod example_implicit_dispatcher {} /// gen_program!(); /// ``` pub mod example_lazy_resources {} +/// Example: Entry Metadata (no `pathf`) +/// +/// > Demonstrates attaching arbitrary, compile-time-typed metadata (`Description`) +/// > to an entry via `#[metadata(Entry)]`, and retrieving it at runtime through +/// > `ProgramCollect::get_metadata`. The `desc` and `nodoc` subcommands dispatch +/// > through the normal chain/render pipeline — exactly like `example-basic`. +/// +/// Run: +/// ```bash +/// cargo run --manifest-path examples/example-metadata/Cargo.toml --quiet -- greet Alice +/// cargo run --manifest-path examples/example-metadata/Cargo.toml --quiet -- greet +/// cargo run --manifest-path examples/example-metadata/Cargo.toml --quiet -- desc +/// cargo run --manifest-path examples/example-metadata/Cargo.toml --quiet -- nodoc +/// ``` +/// +/// Output: +/// ```plaintext +/// Hello, Alice! +/// Hello, World! +/// EntryGreet desc = ok +/// EntryDescription has no description +/// ``` +/// +/// Source code (./Cargo.toml) +/// ```toml +/// [package] +/// name = "example-metadata" +/// version = "0.1.0" +/// edition = "2024" +/// +/// [dependencies] +/// mingling = { path = "../../mingling" } +/// +/// [workspace] +/// ``` +/// +/// Source code (./src/main.rs) +/// ```ignore +/// use mingling::{macros::metadata, prelude::*}; +/// use std::io::Write; +/// +/// // Define the `greet` subcommand +/// dispatcher!("greet", CMDGreet => EntryGreet); +/// +/// // Define the `desc` subcommand, which queries metadata bound to EntryGreet +/// dispatcher!("desc", CMDDescription => EntryDescription); +/// +/// // Define the `nodoc` subcommand, which queries metadata for an entry that has none +/// dispatcher!("nodoc", CMDNoDescription => EntryNoDescription); +/// +/// fn main() { +/// let mut program = ThisProgram::new(); +/// program.with_dispatcher(CMDGreet); +/// program.with_dispatcher(CMDDescription); +/// program.with_dispatcher(CMDNoDescription); +/// program.exec_and_exit(); +/// } +/// +/// /// The metadata type attached to an entry. +/// #[derive(Debug, PartialEq, Eq)] +/// pub struct Description { +/// pub desc: String, +/// } +/// +/// // --------- IMPORTANT --------- +/// /// Attach a `Description` to `EntryGreet`. +/// /// +/// /// - `BindType` = `EntryGreet` (the enum variant / entry type) +/// /// - `DataType` = `Description` (the function's return type) +/// #[metadata(EntryGreet)] +/// pub fn greet_desc() -> Description { +/// Description { +/// desc: "ok".to_string(), +/// } +/// } +/// // --------- IMPORTANT --------- +/// +/// pack!(ResultName = String); +/// pack!(DescResult = String); +/// +/// /// Chain for `greet` — reads the name and produces a `ResultName`. +/// #[chain] +/// fn handle_greet(args: EntryGreet) -> Next { +/// let name: ResultName = args +/// .inner +/// .first() +/// .cloned() +/// .unwrap_or_else(|| "World".to_string()) +/// .into(); +/// name.into() +/// } +/// +/// /// Chain for `desc` — looks up the metadata bound to `EntryGreet`. +/// #[chain] +/// fn handle_desc(_args: EntryDescription) -> Next { +/// use mingling::ProgramCollect; +/// // --------- IMPORTANT --------- +/// let msg = match ThisProgram::get_metadata::<Description>(ThisProgram::EntryGreet) { +/// Some(d) => format!("EntryGreet desc = {}", d.desc), +/// None => "EntryGreet has no description".to_string(), +/// }; +/// // --------- IMPORTANT --------- +/// DescResult::new(msg).to_render() +/// } +/// +/// /// Chain for `nodoc` — asks for metadata on an entry that has none. +/// #[chain] +/// fn handle_nodoc(_args: EntryNoDescription) -> Next { +/// use mingling::ProgramCollect; +/// // --------- IMPORTANT --------- +/// let msg = match ThisProgram::get_metadata::<Description>(ThisProgram::EntryDescription) { +/// Some(d) => format!("EntryDescription desc = {}", d.desc), +/// None => "EntryDescription has no description".to_string(), +/// }; +/// // --------- IMPORTANT --------- +/// DescResult::new(msg).to_render() +/// } +/// +/// /// Renders the greeting message with the provided name. +/// #[renderer] +/// fn render_name(name: ResultName) -> RenderResult { +/// let mut render_result = RenderResult::new(); +/// writeln!(render_result, "Hello, {}!", *name).ok(); +/// render_result +/// } +/// +/// /// Renders the metadata query result. +/// #[renderer] +/// fn render_desc(msg: DescResult) -> RenderResult { +/// let mut render_result = RenderResult::new(); +/// writeln!(render_result, "{}", *msg).ok(); +/// render_result +/// } +/// +/// gen_program!(); +/// ``` +pub mod example_metadata {} /// Example: Using the `group!()` Macro to Register Outside Types /// /// This example demonstrates how to use the `group!()` macro to make outside diff --git a/mingling/src/gen_program.rs b/mingling/src/gen_program.rs index a3b7e29..ef32074 100644 --- a/mingling/src/gen_program.rs +++ b/mingling/src/gen_program.rs @@ -212,6 +212,11 @@ impl ProgramCollect for ThisProgram { todo!() } + fn get_metadata<T: 'static>(member_id: Self::Enum) -> Option<T> { + let _ = member_id; + todo!() + } + #[cfg(feature = "async")] fn do_chain( _any: mingling_core::AnyOutput<Self::Enum>, diff --git a/mingling/src/lib.rs b/mingling/src/lib.rs index 108d61a..470c64b 100644 --- a/mingling/src/lib.rs +++ b/mingling/src/lib.rs @@ -16,6 +16,10 @@ pub mod CRATE_ROOT { pub use crate::gen_program::*; } +/// Mingling's convention metadatas, which can be bound to types using `#[metadata]`, to provide identification for types +#[cfg(feature = "core")] +pub mod metadata; + #[cfg(feature = "core")] mod example_docs; @@ -76,6 +80,7 @@ pub mod macros { #[cfg(all(feature = "structural_renderer", feature = "extras"))] pub use mingling_macros::group_structural; pub use mingling_macros::help; + pub use mingling_macros::metadata; pub use mingling_macros::mlint; pub use mingling_macros::node; pub use mingling_macros::pack; @@ -106,6 +111,8 @@ pub mod macros { #[doc(hidden)] pub use mingling_macros::register_help; #[doc(hidden)] + pub use mingling_macros::register_metadata; + #[doc(hidden)] pub use mingling_macros::register_renderer; #[doc(hidden)] pub use mingling_macros::register_type; diff --git a/mingling/src/metadata.rs b/mingling/src/metadata.rs new file mode 100644 index 0000000..06fcec9 --- /dev/null +++ b/mingling/src/metadata.rs @@ -0,0 +1 @@ +pub use mingling_core::metadata::*; |