Skip type name resolution if resolved

Author: soutaro

lib/rbs/environment.rb

@@ -486,6 +486,28 @@ def validate_type_params
       end
     end
 
+    def resolve_signature(resolver, table, dirs, decls, only: nil)
+      map = UseMap.new(table: table)
+      dirs.each do |dir|
+        case dir
+        when AST::Directives::Use
+          dir.clauses.each do |clause|
+            map.build_map(clause)
+          end
+        end
+      end
+
+      decls = decls.map do |decl|
+        if only && !only.member?(decl)
+          decl
+        else
+          resolve_declaration(resolver, map, decl, outer: [], prefix: Namespace.root)
+        end
+      end
+
+      [dirs, decls]
+    end
+
     def resolve_type_names(only: nil)
       resolver = Resolver::TypeNameResolver.new(self)
       env = Environment.new
@@ -498,21 +520,9 @@ def resolve_type_names(only: nil)
       table.compute_children
 
       signatures.each do |buffer, (dirs, decls)|
-        map = UseMap.new(table: table)
-        dirs.each do |dir|
-          dir.clauses.each do |clause|
-            map.build_map(clause)
-          end
+        unless dirs.find { _1.is_a?(AST::Directives::Resolved) }
+          _, decls = resolve_signature(resolver, table, dirs, decls)
         end
-
-        decls = decls.map do |decl|
-          if only && !only.member?(decl)
-            decl
-          else
-            resolve_declaration(resolver, map, decl, outer: [], prefix: Namespace.root)
-          end
-        end
-
         env.add_signature(buffer: buffer, directives: dirs, decls: decls)
       end
 

sig/environment.rbs

@@ -141,6 +141,8 @@ module RBS
     #
     def resolve_type_names: (?only: Set[AST::Declarations::t]?) -> Environment
 
+    def resolve_signature: (Resolver::TypeNameResolver, UseMap::Table, Array[AST::Directives::t], Array[AST::Declarations::t], ?only: Set[AST::Declarations::t]?) -> [Array[AST::Directives::t], Array[AST::Declarations::t]]
+
     def inspect: () -> String
 
     def buffers: () -> Array[Buffer]

test/rbs/environment_test.rb

@@ -549,4 +549,20 @@ class OB
       assert_operator env.class_decls, :key?, RBS::TypeName.parse("::OB")
     end
   end
+
+  def test_resolved_directive
+    buf, dirs, decls = RBS::Parser.parse_signature(<<-RBS)
+# resolved: true
+
+type t = String
+    RBS
+
+    env = Environment.new
+    env.add_signature(buffer: buf, directives: dirs, decls: decls)
+
+    env.resolve_type_names.tap do |env|
+      alias_decl = env.type_alias_decls[RBS::TypeName.parse("::t")]
+      assert_equal "String", alias_decl.decl.type.to_s
+    end
+  end
 end