Handle static invocation

pkg/compiler/lib/src/elements/entity_utils.dart

+// Copyright (c) 2017, the Dart 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 file.
+
+library entity_utils;
+
+import 'entities.dart';
+
+// Somewhat stable ordering for libraries using [Uri]s
+int compareLibrariesUris(Uri a, Uri b) {
+  if (a == b) return 0;
+
+  int byCanonicalUriPath() {
+    return a.path.compareTo(b.path);
+  }
+
+  // Order: platform < package < other.
+  if (a.scheme == 'dart') {
+    if (b.scheme == 'dart') return byCanonicalUriPath();
+    return -1;
+  }
+  if (b.scheme == 'dart') return 1;
+
+  if (a.scheme == 'package') {
+    if (b.scheme == 'package') return byCanonicalUriPath();
+    return -1;
+  }
+  if (b.scheme == 'package') return 1;
+
+  return _compareCanonicalUri(a, b);
+}
+
+int _compareCanonicalUri(Uri a, Uri b) {
+  int r = a.scheme.compareTo(b.scheme);
+  if (r != 0) return r;
+
+  // We would like the order of 'file:' Uris to be stable across different
+  // users or different builds from temporary directories.  We sort by
+  // pathSegments elements from the last to the first since that tends to find
+  // a stable distinction regardless of directory root.
+  List<String> aSegments = a.pathSegments;
+  List<String> bSegments = b.pathSegments;
+  int aI = aSegments.length;
+  int bI = bSegments.length;
+  while (aI > 0 && bI > 0) {
+    String aSegment = aSegments[--aI];
+    String bSegment = bSegments[--bI];
+    r = aSegment.compareTo(bSegment);
+    if (r != 0) return r;
+  }
+  return aI.compareTo(bI); // Shortest first.
+}
+
+/// Compare URIs of compilation units.
+int compareSourceUris(Uri uri1, Uri uri2) {
+  if (uri1 == uri2) return 0;
+  // Compilation units are compared only within the same library so we expect
+  // the Uris to usually be clustered together with a common scheme and path
+  // prefix.
+  return '${uri1}'.compareTo('${uri2}');
+}
+
+/// Compare entities within the same compilation unit.
+int compareEntities(Entity element1, int line1, int column1, Entity element2,
+    int line2, int column2) {
+  line1 ??= -1;
+  line2 ??= -1;
+  int r = line1.compareTo(line2);
+  if (r != 0) return r;
+
+  column1 ??= -1;
+  column2 ??= -1;
+  r = column1.compareTo(column2);
+  if (r != 0) return r;
+
+  r = element1.name.compareTo(element2.name);
+  if (r != 0) return r;
+
+  // Same file, position and name.  If this happens, we should find out why
+  // and make the order total and independent of hashCode.
+  return element1.hashCode.compareTo(element2.hashCode);
+}
+
+String reconstructConstructorName(FunctionEntity element) {
+  String className = element.enclosingClass.name;
+  if (element.name == '') {
+    return className;
+  } else {
+    return '$className\$${element.name}';
+  }
+}