a658bfef19
# Objective Resolves #6197 Make it so that doc comments can be retrieved via reflection. ## Solution Adds the new `documentation` feature to `bevy_reflect` (disabled by default). When enabled, documentation can be found using `TypeInfo::doc` for reflected types: ```rust /// Some struct. /// /// # Example /// /// ```ignore /// let some_struct = SomeStruct; /// ``` #[derive(Reflect)] struct SomeStruct; let info = <SomeStruct as Typed>::type_info(); assert_eq!( Some(" Some struct.\n\n # Example\n\n ```ignore\n let some_struct = SomeStruct;\n ```"), info.docs() ); ``` ### Notes for Reviewers The bulk of the files simply added the same 16 lines of code (with slightly different documentation). Most of the real changes occur in the `bevy_reflect_derive` files as well as in the added tests. --- ## Changelog * Added `documentation` feature to `bevy_reflect` * Added `TypeInfo::docs` method (and similar methods for all info types)
51 lines
2.1 KiB
Rust
51 lines
2.1 KiB
Rust
//! This example illustrates how you can reflect doc comments.
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//!
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//! There may be cases where you may want to collect a reflected item's documentation.
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//! For example, you may want to generate schemas or other external documentation for scripting.
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//! Or perhaps you want your custom editor to display tooltips for certain properties that match the documentation.
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//!
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//! These scenarios can readily be achieved by using `bevy_reflect` with the `documentation` feature.
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use bevy_reflect::{Reflect, TypeInfo, Typed};
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fn main() {
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//! This function will simply demonstrate how you can access a type's documentation.
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//!
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//! Please note that the code below uses a standard struct with named fields; however, this isn't
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//! exclusive to them. It can work for all kinds of data types including tuple structs and enums too!
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/// The struct that defines our player.
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///
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/// # Example
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///
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/// ```
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/// let player = Player::new("Urist McPlayer");
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/// ```
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#[derive(Reflect)]
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struct Player {
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/// The player's name.
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name: String,
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/// The player's current health points.
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hp: u8,
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// Some regular comment (i.e. not a doc comment)
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max_hp: u8,
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}
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// Using `TypeInfo` we can access all of the doc comments on the `Player` struct above:
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let player_info = <Player as Typed>::type_info();
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// From here, we already have access to the struct's docs:
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let player_docs = player_info.docs().unwrap();
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assert_eq!(" The struct that defines our player.\n\n # Example\n\n ```\n let player = Player::new(\"Urist McPlayer\");\n ```", player_docs);
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println!("=====[ Player ]=====\n{}", player_docs);
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// We can then iterate through our struct's fields to get their documentation as well:
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if let TypeInfo::Struct(struct_info) = player_info {
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for field in struct_info.iter() {
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let field_name = field.name();
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let field_docs = field.docs().unwrap_or("<NO_DOCUMENTATION>");
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println!("-----[ Player::{} ]-----\n{}", field_name, field_docs);
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}
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}
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}
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