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Use bevy_reflect as path in case of no direct references (bevyengine#…
…1875) Fixes bevyengine#1844 Co-authored-by: Carter Anderson <mcanders1@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,71 +1,5 @@ | ||
| use find_crate::Manifest; | ||
| use proc_macro::TokenStream; | ||
| use syn::{Attribute, Path}; | ||
|
|
||
| #[derive(Debug)] | ||
| pub struct Modules { | ||
| pub bevy_render: String, | ||
| pub bevy_asset: String, | ||
| pub bevy_core: String, | ||
| pub bevy_utils: String, | ||
| pub bevy_app: String, | ||
| } | ||
|
|
||
| impl Modules { | ||
| pub fn meta(name: &str) -> Modules { | ||
| Modules { | ||
| bevy_asset: format!("{}::asset", name), | ||
| bevy_render: format!("{}::render", name), | ||
| bevy_core: format!("{}::core", name), | ||
| bevy_utils: format!("{}::utils", name), | ||
| bevy_app: format!("{}::app", name), | ||
| } | ||
| } | ||
|
|
||
| pub fn external() -> Modules { | ||
| Modules { | ||
| bevy_asset: "bevy_asset".to_string(), | ||
| bevy_render: "bevy_render".to_string(), | ||
| bevy_core: "bevy_core".to_string(), | ||
| bevy_utils: "bevy_utils".to_string(), | ||
| bevy_app: "bevy_app".to_string(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn get_meta() -> Option<Modules> { | ||
| let manifest = Manifest::new().unwrap(); | ||
| if let Some(package) = manifest.find(|name| name == "bevy") { | ||
| Some(Modules::meta(&package.name)) | ||
| } else if let Some(package) = manifest.find(|name| name == "bevy_internal") { | ||
| Some(Modules::meta(&package.name)) | ||
| } else { | ||
| None | ||
| } | ||
| } | ||
|
|
||
| const AS_CRATE_ATTRIBUTE_NAME: &str = "as_crate"; | ||
|
|
||
| fn validate_as_crate_attribute(tokens: &str) -> bool { | ||
| tokens.len() > 2 && tokens.starts_with('(') && tokens.ends_with(')') | ||
| } | ||
|
|
||
| pub fn get_modules(attributes: &[Attribute]) -> Modules { | ||
| let mut modules = get_meta().unwrap_or_else(Modules::external); | ||
| for attribute in attributes.iter() { | ||
| if *attribute.path.get_ident().as_ref().unwrap() == AS_CRATE_ATTRIBUTE_NAME { | ||
| let value = attribute.tokens.to_string(); | ||
| if !validate_as_crate_attribute(&value) { | ||
| panic!("The attribute `#[as_crate{}]` is invalid. It must follow the format `#[as_crate(<crate name>)]`", value); | ||
| } else if value[1..value.len() - 1] == modules.bevy_render { | ||
| modules.bevy_render = "crate".to_string(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| modules | ||
| } | ||
|
|
||
| pub fn get_path(path_str: &str) -> Path { | ||
| syn::parse(path_str.parse::<TokenStream>().unwrap()).unwrap() | ||
| } | ||
| pub const BEVY_APP: &str = "bevy_app"; | ||
| pub const BEVY_ASSET: &str = "bevy_asset"; | ||
| pub const BEVY_CORE: &str = "bevy_core"; | ||
| pub const BEVY_RENDER: &str = "bevy_render"; | ||
| pub const BEVY_UTILS: &str = "bevy_utils"; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| [package] | ||
| name = "bevy_macro_utils" | ||
| version = "0.5.0" | ||
| edition = "2018" | ||
| authors = [ | ||
| "Bevy Contributors <bevyengine@gmail.com>", | ||
| "Carter Anderson <mcanders1@gmail.com>", | ||
| ] | ||
| description = "A collection of utils for Bevy Engine" | ||
| homepage = "https://bevyengine.org" | ||
| repository = "https://github.com/bevyengine/bevy" | ||
| license = "MIT" | ||
| keywords = ["bevy"] | ||
|
|
||
| [dependencies] | ||
| cargo-manifest = "0.2.3" | ||
| proc-macro2 = "1.0" | ||
| syn = "1.0" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| extern crate proc_macro; | ||
|
|
||
| use cargo_manifest::{DepsSet, Manifest}; | ||
| use proc_macro::TokenStream; | ||
| use std::{env, path::PathBuf}; | ||
|
|
||
| pub struct BevyManifest { | ||
| manifest: Manifest, | ||
| } | ||
|
|
||
| impl Default for BevyManifest { | ||
| fn default() -> Self { | ||
| Self { | ||
| manifest: env::var_os("CARGO_MANIFEST_DIR") | ||
| .map(PathBuf::from) | ||
| .map(|mut path| { | ||
| path.push("Cargo.toml"); | ||
| Manifest::from_path(path).unwrap() | ||
| }) | ||
| .unwrap(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl BevyManifest { | ||
| pub fn get_path(&self, name: &str) -> syn::Path { | ||
| const BEVY: &str = "bevy"; | ||
| const BEVY_INTERNAL: &str = "bevy_internal"; | ||
|
|
||
| let find_in_deps = |deps: &DepsSet| -> Option<syn::Path> { | ||
| let package = if let Some(dep) = deps.get(BEVY) { | ||
| dep.package().unwrap_or(BEVY) | ||
| } else if let Some(dep) = deps.get(BEVY_INTERNAL) { | ||
| dep.package().unwrap_or(BEVY_INTERNAL) | ||
| } else { | ||
| return None; | ||
| }; | ||
|
|
||
| let mut path = get_path(package); | ||
| if let Some(module) = name.strip_prefix("bevy_") { | ||
| path.segments.push(parse_str(module)); | ||
| } | ||
| Some(path) | ||
| }; | ||
|
|
||
| let deps = self.manifest.dependencies.as_ref(); | ||
| let deps_dev = self.manifest.dev_dependencies.as_ref(); | ||
|
|
||
| deps.and_then(find_in_deps) | ||
| .or_else(|| deps_dev.and_then(find_in_deps)) | ||
| .unwrap_or_else(|| get_path(name)) | ||
| } | ||
| } | ||
|
|
||
| fn get_path(path: &str) -> syn::Path { | ||
| parse_str(path) | ||
| } | ||
|
|
||
| fn parse_str<T: syn::parse::Parse>(path: &str) -> T { | ||
| syn::parse(path.parse::<TokenStream>().unwrap()).unwrap() | ||
| } |
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