diff options
Diffstat (limited to 'vendor/elsa/examples/fluentresource.rs')
-rw-r--r-- | vendor/elsa/examples/fluentresource.rs | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/vendor/elsa/examples/fluentresource.rs b/vendor/elsa/examples/fluentresource.rs new file mode 100644 index 000000000..dba4aaed8 --- /dev/null +++ b/vendor/elsa/examples/fluentresource.rs @@ -0,0 +1,50 @@ +use elsa::FrozenMap; + +/// Stores some parsed AST representation of the file +#[derive(Debug)] +pub struct FluentResource<'mgr>(&'mgr str); + +impl<'mgr> FluentResource<'mgr> { + pub fn new(s: &'mgr str) -> Self { + // very simple parse step + FluentResource(&s[0..1]) + } +} + +/// Stores loaded files and parsed ASTs +/// +/// Parsed ASTs are zero-copy and +/// contain references to the files +pub struct ResourceManager<'mgr> { + strings: FrozenMap<String, String>, + resources: FrozenMap<String, Box<FluentResource<'mgr>>>, +} + +impl<'mgr> ResourceManager<'mgr> { + pub fn new() -> Self { + ResourceManager { + strings: FrozenMap::new(), + resources: FrozenMap::new(), + } + } + + pub fn get_resource(&'mgr self, path: &str) -> &'mgr FluentResource<'mgr> { + let strings = &self.strings; + + if strings.get(path).is_some() { + return self.resources.get(path).unwrap(); + } else { + // pretend to load a file + let string = format!("file for {}", path); + let val = self.strings.insert(path.to_string(), string); + let res = FluentResource::new(val); + self.resources.insert(path.to_string(), Box::new(res)) + } + } +} + +fn main() { + let manager = ResourceManager::new(); + let resource = manager.get_resource("somefile.ftl"); + println!("{:?}", resource); +} |