Rework examples and add entry macro for testing

1 files changed, 102 insertions, 0 deletions

diff --git a/examples/example-enum-tag/src/main.rs b/examples/example-enum-tag/src/main.rs
new file mode 100644
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+++ b/examples/example-enum-tag/src/main.rs
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+//! Example Enum Tag
+//!
+//! > This example demonstrates how to use the `EnumTag` derive macro to tag enum variants with metadata,
+//! > which can be used for autocompletion and parsing
+//!
+//! Run:
+//! ```bash
+//! cargo run --manifest-path examples/example-enum-tag/Cargo.toml --quiet -- lang-select OCaml
+//! cargo run --manifest-path examples/example-enum-tag/Cargo.toml --quiet -- lang-select
+//! ```
+//!
+//! Output:
+//! ```plaintext
+//! Selected: OCaml (A representative functional programming language with strong type inference)
+//! Selected: Rust (A systems programming language focused on performance, safety, and concurrency)
+//! ```
+
+use mingling::{
+    EnumTag, Groupped, ShellContext, Suggest, macros::suggest_enum, parser::PickableEnum,
+    prelude::*,
+};
+
+// Define the enum and derive the EnumTag trait
+//                        ________ adds metadata to the enum, enabling it to:
+//                       /         1. Be used by the `suggest_enum!(Enum)` macro under the `comp` feature for autocompletion
+//                       vvvvvvv   2. Implement the `PickableEnum` trait
+#[derive(Debug, Default, EnumTag, Groupped)]
+pub enum ProgrammingLanguages {
+    #[enum_desc("An efficient and flexible compiled language widely used for system programming")]
+    C,
+
+    #[enum_rename("C++")]
+    #[enum_desc("A high-performance language extending C with object-oriented features")]
+    CPlusPlus,
+
+    #[enum_rename("C#")]
+    #[enum_desc("Microsoft's object-oriented programming language running on the .NET platform")]
+    Csharp,
+
+    #[enum_desc(
+        "A cross-platform object-oriented language widely used for enterprise application development"
+    )]
+    Java,
+
+    #[enum_desc(
+        "A dynamic scripting language for web development, supporting prototype chain inheritance"
+    )]
+    JavaScript,
+
+    #[enum_desc("A modern statically typed language running on the JVM, concise and safe")]
+    Kotlin,
+
+    #[enum_desc("A representative functional programming language with strong type inference")]
+    OCaml,
+
+    #[enum_desc("A general-purpose programming language with clean syntax, known for readability")]
+    Python,
+
+    #[enum_desc("An object-oriented scripting language, famous for its concise and elegant syntax")]
+    Ruby,
+
+    #[default]
+    #[enum_desc("A systems programming language focused on performance, safety, and concurrency")]
+    Rust,
+}
+
+// --------- IMPORTANT ---------
+// Implement the PickableEnum trait for ProgrammingLanguages,
+// so that `Picker` can parse this enum
+impl PickableEnum for ProgrammingLanguages {}
+// --------- IMPORTANT ---------
+
+dispatcher!("lang-select", CMDLanguageSelection => EntryLanguageSelection);
+
+#[chain]
+fn handle_language_selection(args: EntryLanguageSelection) -> Next {
+    // You can use Picker to directly parse ProgrammingLanguages
+    let lang: ProgrammingLanguages = args.pick(()).unpack();
+    lang
+}
+
+#[renderer]
+fn render_programming_language(lang: ProgrammingLanguages) {
+    // You can use `enum_info()` to get the name and description of the current enum
+    let (name, desc) = lang.enum_info();
+    r_println!("Selected: {} ({})", name, desc)
+}
+
+#[completion(EntryLanguageSelection)]
+fn complete_language_selection(_: &ShellContext) -> Suggest {
+    // Use `suggest_enum!` directly to generate enum suggestions
+    suggest_enum!(ProgrammingLanguages)
+}
+
+gen_program!();
+
+fn main() {
+    let mut program = ThisProgram::new();
+    program.with_dispatcher(CompletionDispatcher);
+    program.with_dispatcher(CMDLanguageSelection);
+    program.exec_and_exit();
+}