Rename fletch -> dartino

pkg/fletchc/lib/src/fletch_selector.dart

-// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-library fletchc.fletch_selector;
-
-enum SelectorKind {
-  Method,
-  Getter,
-  Setter,
-}
-
-class FletchSelector {
-  final int encodedSelector;
-
-  const FletchSelector(this.encodedSelector);
-
-  int get id => decodeId(encodedSelector);
-
-  SelectorKind get kind => SelectorKind.values[encodedSelector >> 8 & 3];
-
-  int get arity => encodedSelector & 255;
-
-  static const MAX_ARITY = (1 << 8) - 1;
-  static const MAX_UNIQUE_SELECTORS = (1 << 22) - 1;
-  static const ID_SHIFT = 10;
-
-  // Encode a fletch selector. The result is a 32bit integer with the following
-  // layout (lower to higher):
-  //  - 8 bit arity
-  //  - 2 bit kind
-  //  - 22 bit id
-  static int encode(int id, SelectorKind kind, int arity) {
-    if (arity > MAX_ARITY) throw "Only arity up to 255 is supported";
-    if (id > MAX_UNIQUE_SELECTORS) {
-      throw "Only ${MAX_UNIQUE_SELECTORS + 1} unique identifiers is supported";
-    }
-    return arity | (kind.index << 8) | (id << ID_SHIFT);
-  }
-
-  static int encodeMethod(int id, int arity) {
-    return encode(id, SelectorKind.Method, arity);
-  }
-
-  static int encodeGetter(int id) => encode(id, SelectorKind.Getter, 0);
-
-  static int encodeSetter(int id) => encode(id, SelectorKind.Setter, 1);
-
-  static int decodeId(int selector) => selector >> ID_SHIFT;
-}