feat(导出): 添加默认导出作用域并完善导出逻辑

添加 Default 导出作用域，根据配置文件处理默认导出
修改导出检查逻辑，默认情况下库文件不可见
完善导出标签解析，支持更多表达式类型

Author: xuhuanzy

crates/emmylua_code_analysis/src/compilation/analyzer/doc/property_tags.rs

@@ -11,7 +11,7 @@ use crate::compilation::analyzer::doc::tags::report_orphan_tag;
 use emmylua_parser::{
     LuaAst, LuaAstNode, LuaDocDescriptionOwner, LuaDocTagAsync, LuaDocTagDeprecated,
     LuaDocTagExport, LuaDocTagNodiscard, LuaDocTagReadonly, LuaDocTagSource, LuaDocTagVersion,
-    LuaDocTagVisibility, LuaTableExpr,
+    LuaDocTagVisibility, LuaExpr,
 };
 
 pub fn analyze_visibility(
@@ -121,11 +121,27 @@ pub fn analyze_export(analyzer: &mut DocAnalyzer, tag: LuaDocTagExport) -> Optio
     };
     let owner_id = match owner {
         LuaAst::LuaReturnStat(return_stat) => {
-            let return_table_expr = return_stat.child::<LuaTableExpr>()?;
-            LuaSemanticDeclId::LuaDecl(LuaDeclId::new(
-                analyzer.file_id,
-                return_table_expr.get_position(),
-            ))
+            let expr = return_stat.child::<LuaExpr>()?;
+            match expr {
+                LuaExpr::NameExpr(name_expr) => {
+                    let name = name_expr.get_name_text()?;
+                    let tree = analyzer
+                        .db
+                        .get_decl_index()
+                        .get_decl_tree(&analyzer.file_id)?;
+                    let decl = tree.find_local_decl(&name, name_expr.get_position())?;
+
+                    Some(LuaSemanticDeclId::LuaDecl(decl.get_id()))
+                }
+                LuaExpr::ClosureExpr(closure) => Some(LuaSemanticDeclId::Signature(
+                    LuaSignatureId::from_closure(analyzer.file_id, &closure),
+                )),
+                LuaExpr::TableExpr(table_expr) => Some(LuaSemanticDeclId::LuaDecl(LuaDeclId::new(
+                    analyzer.file_id,
+                    table_expr.get_position(),
+                ))),
+                _ => None,
+            }?
         }
         _ => get_owner_id_or_report(analyzer, &tag)?,
     };
@@ -134,10 +150,10 @@ pub fn analyze_export(analyzer: &mut DocAnalyzer, tag: LuaDocTagExport) -> Optio
         match scope_text.as_str() {
             "namespace" => LuaExportScope::Namespace,
             "global" => LuaExportScope::Global,
-            _ => LuaExportScope::Global, // 默认为 global
+            _ => LuaExportScope::Default,
         }
     } else {
-        LuaExportScope::Global // 没有参数时默认为 global
+        LuaExportScope::Default
     };
 
     let export = LuaExport {

crates/emmylua_code_analysis/src/db_index/property/property.rs

@@ -127,6 +127,7 @@ pub enum LuaDeprecated {
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum LuaExportScope {
+    Default, // 默认声明, 会根据配置文件作不同的处理.
     Global,
     Namespace,
 }

crates/emmylua_code_analysis/src/semantic/visibility/export.rs

@@ -9,7 +9,7 @@ pub fn check_export_visibility(
 ) -> Option<bool> {
     // 检查模块是否有 export 标记
     let Some(export) = module_info.get_export(semantic_model.get_db()) else {
-        return Some(true);
+        return check_default_export_visibility(semantic_model, module_info);
     };
 
     match export.scope {
@@ -35,10 +35,31 @@ pub fn check_export_visibility(
                 return Some(true);
             }
         }
-        _ => {
+        LuaExportScope::Global => {
             return Some(true);
         }
+        LuaExportScope::Default => {
+            return check_default_export_visibility(semantic_model, module_info);
+        }
     }
 
     Some(false)
 }
+
+/// 检查默认导出作用域下的可见性
+///
+/// 默认情况下, 如果被声明为库文件, 则我们不认为是可见的.
+/// 否则认为是可见的.
+fn check_default_export_visibility(
+    semantic_model: &SemanticModel,
+    module_info: &ModuleInfo,
+) -> Option<bool> {
+    if semantic_model
+        .db
+        .get_module_index()
+        .is_library(&module_info.file_id)
+    {
+        return Some(false);
+    }
+    Some(true)
+}