Add edition to plugin metadata. (#5922)

crates/cairo-lang-defs/src/db.rs

@@ -430,12 +430,20 @@ fn priv_module_data(db: &dyn DefsGroup, module_id: ModuleId) -> Maybe<ModuleData
     let mut files = Vec::new();
     let mut plugin_diagnostics = Vec::new();
 
+    let crate_id = module_id.owning_crate(db);
     let cfg_set = db
-        .crate_config(module_id.owning_crate(db))
+        .crate_config(crate_id)
         .and_then(|cfg| cfg.settings.cfg_set.map(Arc::new))
         .unwrap_or(db.cfg_set());
-    let metadata =
-        MacroPluginMetadata { cfg_set: &cfg_set, declared_derives: &db.declared_derives() };
+    let edition = db
+        .crate_config(module_id.owning_crate(db))
+        .map(|cfg| cfg.settings.edition)
+        .unwrap_or_default();
+    let metadata = MacroPluginMetadata {
+        cfg_set: &cfg_set,
+        declared_derives: &db.declared_derives(),
+        edition,
+    };
 
     let mut items = vec![];
     generated_file_infos.push(main_file_info);

crates/cairo-lang-defs/src/plugin.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 
 use cairo_lang_diagnostics::Severity;
 use cairo_lang_filesystem::cfg::CfgSet;
+use cairo_lang_filesystem::db::Edition;
 use cairo_lang_filesystem::ids::CodeMapping;
 use cairo_lang_syntax::node::ast;
 use cairo_lang_syntax::node::db::SyntaxGroup;
@@ -80,10 +81,12 @@ impl PluginDiagnostic {
 /// A structure containing additional info about the current module item on which macro plugin
 /// operates.
 pub struct MacroPluginMetadata<'a> {
-    /// Config set of a crate to which the current item belongs.
+    /// Config set of the crate to which the current item belongs.
     pub cfg_set: &'a CfgSet,
     /// The possible derives declared by any plugin.
     pub declared_derives: &'a OrderedHashSet<String>,
+    /// The edition of the crate to which the current item belongs.
+    pub edition: Edition,
 }
 
 // TOD(spapini): Move to another place.