Better error message on incorrect asset label (#11254)

# Objective

When you have no idea what to put after `#` when loading an asset, error
message may help.

## Solution

Add all labels to the error message.

## Test plan

Modified `anti_alias` example to put incorrect label, the error is:

```
2024-01-08T07:41:25.462287Z ERROR bevy_asset::server: The file at 'models/FlightHelmet/FlightHelmet.gltf' does not contain the labeled asset 'Rrrr'; it contains the following 25 assets: 'Material0', 'Material1', 'Material2', 'Material3', 'Material4', 'Material5', 'Mesh0', 'Mesh0/Primitive0', 'Mesh1', 'Mesh1/Primitive0', 'Mesh2', 'Mesh2/Primitive0', 'Mesh3', 'Mesh3/Primitive0', 'Mesh4', 'Mesh4/Primitive0', 'Mesh5', 'Mesh5/Primitive0', 'Node0', 'Node1', 'Node2', 'Node3', 'Node4', 'Node5', 'Scene0'
```
This commit is contained in:
Stepan Koltsov 2024-01-08 22:45:07 +00:00 committed by GitHub
parent 13570cd4c8
commit c0f8338697
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View file

@ -487,9 +487,16 @@ impl AssetServer {
match loaded_asset.labeled_assets.get(&label) {
Some(labeled_asset) => labeled_asset.handle.clone(),
None => {
let mut all_labels: Vec<String> = loaded_asset
.labeled_assets
.keys()
.map(|s| (**s).to_owned())
.collect();
all_labels.sort_unstable();
return Err(AssetLoadError::MissingLabel {
base_path,
label: label.to_string(),
all_labels,
});
}
}
@ -1138,10 +1145,15 @@ pub enum AssetLoadError {
loader_name: &'static str,
error: Box<dyn std::error::Error + Send + Sync + 'static>,
},
#[error("The file at '{base_path}' does not contain the labeled asset '{label}'.")]
#[error("The file at '{}' does not contain the labeled asset '{}'; it contains the following {} assets: {}",
base_path,
label,
all_labels.len(),
all_labels.iter().map(|l| format!("'{}'", l)).collect::<Vec<_>>().join(", "))]
MissingLabel {
base_path: AssetPath<'static>,
label: String,
all_labels: Vec<String>,
},
}