[ffigen] Remove BindingsIndex._declaredTypes

pkgs/ffigen/lib/src/header_parser/sub_parsers/compounddecl_parser.dart

@@ -123,7 +123,11 @@ Compound? _parseCompoundDeclaration(
   constructor,
 ) {
   // Parse the cursor definition instead, if this is a forward declaration.
-  final declUsr = cursor.usr();
+  final usr = cursor.usr();
+
+  final cachedCompound = context.bindingsIndex.getSeenCompound(usr);
+  if (cachedCompound != null) return cachedCompound;
+
   final String declName;
 
   // Only set name using USR if the type is not Anonymous (A struct is anonymous
@@ -132,7 +136,7 @@ Compound? _parseCompoundDeclaration(
   if (clang.clang_Cursor_isAnonymous(cursor) == 0) {
     // This gives the significant name, i.e name of the struct if defined or
     // name of the first typedef declaration that refers to it.
-    declName = declUsr.split('@').last;
+    declName = usr.split('@').last;
   } else {
     // Empty names are treated as inline declarations.
     declName = '';
@@ -144,12 +148,13 @@ Compound? _parseCompoundDeclaration(
     return null;
   }
 
-  final decl = Declaration(usr: declUsr, originalName: declName);
+  final decl = Declaration(usr: usr, originalName: declName);
+  final Compound compound;
   if (declName.isEmpty) {
     cursor = context.cursorIndex.getDefinition(cursor);
-    return constructor(
+    compound = constructor(
       name: 'Unnamed$className',
-      usr: declUsr,
+      usr: usr,
       dartDoc: getCursorDocComment(
         context,
         cursor,
@@ -163,8 +168,8 @@ Compound? _parseCompoundDeclaration(
     context.logger.fine(
       '++++ Adding $className: Name: $declName, ${cursor.completeStringRepr()}',
     );
-    return constructor(
-      usr: declUsr,
+    compound = constructor(
+      usr: usr,
       originalName: declName,
       name: configDecl.rename(decl),
       dartDoc: getCursorDocComment(
@@ -176,6 +181,8 @@ Compound? _parseCompoundDeclaration(
       nativeType: cursor.type().spelling(),
     );
   }
+  context.bindingsIndex.addCompoundToSeen(usr, compound);
+  return compound;
 }
 
 void fillCompoundMembersIfNeeded(

pkgs/ffigen/lib/src/header_parser/sub_parsers/enumdecl_parser.dart

@@ -24,14 +24,18 @@ import 'unnamed_enumdecl_parser.dart';
   // Parse the cursor definition instead, if this is a forward declaration.
   cursor = context.cursorIndex.getDefinition(cursor);
 
-  final enumUsr = cursor.usr();
+  final usr = cursor.usr();
+
+  final cachedEnum = context.bindingsIndex.getSeenEnum(usr);
+  if (cachedEnum != null) return (cachedEnum, cachedEnum.nativeType);
+
   final String enumName;
   // Only set name using USR if the type is not Anonymous (i.e not inside
   // any typedef and declared inplace inside another type).
   if (clang.clang_Cursor_isAnonymous(cursor) == 0) {
     // This gives the significant name, i.e name of the enum if defined or
     // name of the first typedef declaration that refers to it.
-    enumName = enumUsr.split('@').last;
+    enumName = usr.split('@').last;
   } else {
     enumName = '';
   }
@@ -51,7 +55,7 @@ import 'unnamed_enumdecl_parser.dart';
     return (null, nativeType);
   }
 
-  final decl = Declaration(usr: enumUsr, originalName: enumName);
+  final decl = Declaration(usr: usr, originalName: enumName);
   if (enumName.isEmpty) {
     logger.fine('Saving anonymous enum.');
     final addedConstants = saveUnNamedEnum(context, cursor);
@@ -61,7 +65,7 @@ import 'unnamed_enumdecl_parser.dart';
   } else {
     logger.fine('++++ Adding Enum: ${cursor.completeStringRepr()}');
     enumClass = EnumClass(
-      usr: enumUsr,
+      usr: usr,
       dartDoc: getCursorDocComment(
         context,
         cursor,
@@ -111,12 +115,13 @@ import 'unnamed_enumdecl_parser.dart';
     });
     final suggestedStyle = isNSOptions ? EnumStyle.intConstants : null;
     enumClass.style = config.enums.style(decl, suggestedStyle);
+    context.bindingsIndex.addEnumToSeen(usr, enumClass);
   }
 
   if (hasNegativeEnumConstants) {
     // Change enum native type to signed type.
     logger.fine(
-      'For enum $enumUsr - using signed type for $nativeType : '
+      'For enum $usr - using signed type for $nativeType : '
       '${unsignedToSignedNativeIntType[nativeType]}',
     );
     nativeType = unsignedToSignedNativeIntType[nativeType] ?? nativeType;

pkgs/ffigen/lib/src/header_parser/sub_parsers/objcinterfacedecl_parser.dart

@@ -18,9 +18,13 @@ Type? parseObjCInterfaceDeclaration(
   Context context,
   clang_types.CXCursor cursor,
 ) {
-  final itfUsr = cursor.usr();
-  final itfName = cursor.spelling();
-  final decl = Declaration(usr: itfUsr, originalName: itfName);
+  final usr = cursor.usr();
+
+  final cachedItf = context.bindingsIndex.getSeenObjCInterface(usr);
+  if (cachedItf != null) return cachedItf;
+
+  final name = cursor.spelling();
+  final decl = Declaration(usr: usr, originalName: name);
   final apiAvailability = ApiAvailability.fromCursor(cursor, context);
 
   final config = context.config;
@@ -31,23 +35,25 @@ Type? parseObjCInterfaceDeclaration(
 
   context.logger.fine(
     '++++ Adding ObjC interface: '
-    'Name: $itfName, ${cursor.completeStringRepr()}',
+    'Name: $name, ${cursor.completeStringRepr()}',
   );
 
-  return ObjCInterface(
+  final itf = ObjCInterface(
     context: context,
-    usr: itfUsr,
-    originalName: itfName,
+    usr: usr,
+    originalName: name,
     name: objcInterfaces.rename(decl),
-    lookupName: applyModulePrefix(itfName, objcInterfaces.module(decl)),
+    lookupName: applyModulePrefix(name, objcInterfaces.module(decl)),
     dartDoc: getCursorDocComment(
       context,
       cursor,
-      fallbackComment: itfName,
+      fallbackComment: name,
       availability: apiAvailability.dartDoc,
     ),
     apiAvailability: apiAvailability,
   );
+  context.bindingsIndex.addObjCInterfaceToSeen(usr, itf);
+  return itf;
 }
 
 void fillObjCInterfaceMethodsIfNeeded(

pkgs/ffigen/lib/src/header_parser/sub_parsers/typedefdecl_parser.dart

@@ -36,9 +36,13 @@ Typealias? parseTypedefDeclaration(
   final logger = context.logger;
   final config = context.config;
   final bindingsIndex = context.bindingsIndex;
-  final typedefName = cursor.spelling();
-  final typedefUsr = cursor.usr();
-  final decl = Declaration(usr: typedefUsr, originalName: typedefName);
+  final name = cursor.spelling();
+  final usr = cursor.usr();
+
+  final cachedType = bindingsIndex.getSeenTypealias(usr);
+  if (cachedType != null) return cachedType;
+
+  final decl = Declaration(usr: usr, originalName: name);
   final ct = clang.clang_getTypedefDeclUnderlyingType(cursor);
   final s = getCodeGenType(
     context,
@@ -47,46 +51,48 @@ Typealias? parseTypedefDeclaration(
     originalCursor: cursor,
   );
 
-  if (bindingsIndex.isSeenUnsupportedTypealias(typedefUsr)) {
+  if (bindingsIndex.isSeenUnsupportedTypealias(usr)) {
     // Do not process unsupported typealiases again.
   } else if (s is UnimplementedType) {
     logger.fine(
-      "Skipped Typedef '$typedefName': "
+      "Skipped Typedef '$name': "
       'Unimplemented type referred.',
     );
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
-  } else if (s is Compound && s.originalName == typedefName) {
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
+  } else if (s is Compound && s.originalName == name) {
     // Ignore typedef if it refers to a compound with the same original name.
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
     logger.fine(
-      "Skipped Typedef '$typedefName': "
+      "Skipped Typedef '$name': "
       'Name matches with referred struct/union.',
     );
   } else if (s is EnumClass) {
     // Ignore typedefs to Enum.
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
-    logger.fine("Skipped Typedef '$typedefName': typedef to enum.");
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
+    logger.fine("Skipped Typedef '$name': typedef to enum.");
   } else if (s is HandleType) {
     // Ignore typedefs to Handle.
-    logger.fine("Skipped Typedef '$typedefName': typedef to Dart Handle.");
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
+    logger.fine("Skipped Typedef '$name': typedef to Dart Handle.");
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
   } else if (s is ConstantArray || s is IncompleteArray) {
     // Ignore typedefs to Constant Array.
-    logger.fine("Skipped Typedef '$typedefName': typedef to array.");
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
+    logger.fine("Skipped Typedef '$name': typedef to array.");
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
   } else if (s is BooleanType) {
     // Ignore typedefs to Boolean.
-    logger.fine("Skipped Typedef '$typedefName': typedef to bool.");
-    bindingsIndex.addUnsupportedTypealiasToSeen(typedefUsr);
+    logger.fine("Skipped Typedef '$name': typedef to bool.");
+    bindingsIndex.addUnsupportedTypealiasToSeen(usr);
   } else {
     // Create typealias.
-    return Typealias(
-      usr: typedefUsr,
-      originalName: typedefName,
+    final type = Typealias(
+      usr: usr,
+      originalName: name,
       name: config.typedefs.rename(decl),
       type: s,
       dartDoc: getCursorDocComment(context, cursor),
     );
+    bindingsIndex.addTypealiasToSeen(usr, type);
+    return type;
   }
   return null;
 }