pkg/mock: restructure library layout

pkg/mock/lib/src/log_entry.dart

+// Copyright (c) 2014, 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 mock.log_entry;
+
+import 'package:matcher/matcher.dart';
+
+import 'action.dart';
+import 'util.dart';
+
+/**
+ * Every call to a [Mock] object method is logged. The logs are
+ * kept in instances of [LogEntry].
+ */
+class LogEntry {
+  /** The time of the event. */
+  DateTime time;
+
+  /** The mock object name, if any. */
+  final String mockName;
+
+  /** The method name. */
+  final String methodName;
+
+  /** The parameters. */
+  final List args;
+
+  /** The behavior that resulted. */
+  final Action action;
+
+  /** The value that was returned (if no throw). */
+  final value;
+
+  LogEntry(this.mockName, this.methodName,
+      this.args, this.action, [this.value]) {
+    time = new DateTime.now();
+  }
+
+  String _pad2(int val) => (val >= 10 ? '$val' : '0$val');
+
+  String toString([DateTime baseTime]) {
+    Description d = new StringDescription();
+    if (baseTime == null) {
+      // Show absolute time.
+      d.add('${time.hour}:${_pad2(time.minute)}:'
+          '${_pad2(time.second)}.${time.millisecond}>  ');
+    } else {
+      // Show relative time.
+      int delta = time.millisecondsSinceEpoch - baseTime.millisecondsSinceEpoch;
+      int secs = delta ~/ 1000;
+      int msecs = delta % 1000;
+      d.add('$secs.$msecs>  ');
+    }
+    d.add('${qualifiedName(mockName, methodName)}(');
+    if (args != null) {
+      for (var i = 0; i < args.length; i++) {
+        if (i != 0) d.add(', ');
+        d.addDescriptionOf(args[i]);
+      }
+    }
+    d.add(') ${action == Action.THROW ? "threw" : "returned"} ');
+    d.addDescriptionOf(value);
+    return d.toString();
+  }
+}