pkg/matcher: reapply 36881,36896 working around Issue 19173

pkg/matcher/lib/src/operator_matchers.dart

Index: pkg/matcher/lib/src/operator_matchers.dart
diff --git a/pkg/matcher/lib/src/operator_matchers.dart b/pkg/matcher/lib/src/operator_matchers.dart
index fa17aba3ef74b94a34c1a83e614bf36c42a1e13e..fb79e8fd2586474814893b8e0760103885a15e2a 100644
--- a/pkg/matcher/lib/src/operator_matchers.dart
+++ b/pkg/matcher/lib/src/operator_matchers.dart
@@ -2,11 +2,13 @@
 // 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.
 
-part of matcher;
+library matcher.operator_matchers;
 
-/**
- * This returns a matcher that inverts [matcher] to its logical negation.
- */
+import 'core_matchers.dart';
+import 'expect.dart';
+import 'interfaces.dart';
+
+/// This returns a matcher that inverts [matcher] to its logical negation.
 Matcher isNot(matcher) => new _IsNot(wrapMatcher(matcher));
 
 class _IsNot extends Matcher {
@@ -20,13 +22,11 @@ class _IsNot extends Matcher {
     description.add('not ').addDescriptionOf(_matcher);
 }
 
-/**
- * This returns a matcher that matches if all of the matchers passed as
- * arguments (up to 7) match. Instead of passing the matchers separately
- * they can be passed as a single List argument.
- * Any argument that is not a matcher is implicitly wrapped in a
- * Matcher to check for equality.
-*/
+/// This returns a matcher that matches if all of the matchers passed as
+/// arguments (up to 7) match. Instead of passing the matchers separately
+/// they can be passed as a single List argument.
+/// Any argument that is not a matcher is implicitly wrapped in a
+/// Matcher to check for equality.
 Matcher allOf(arg0,
              [arg1 = null,
               arg2 = null,
@@ -34,46 +34,11 @@ Matcher allOf(arg0,
               arg4 = null,
               arg5 = null,
               arg6 = null]) {
-  if (arg0 is List) {
-    expect(arg1, isNull);
-    expect(arg2, isNull);
-    expect(arg3, isNull);
-    expect(arg4, isNull);
-    expect(arg5, isNull);
-    expect(arg6, isNull);
-    for (int i = 0; i < arg0.length; i++) {
-      arg0[i] = wrapMatcher(arg0[i]);
-    }
-    return new _AllOf(arg0);
-  } else {
-    List matchers = new List();
-    if (arg0 != null) {
-      matchers.add(wrapMatcher(arg0));
-    }
-    if (arg1 != null) {
-      matchers.add(wrapMatcher(arg1));
-    }
-    if (arg2 != null) {
-      matchers.add(wrapMatcher(arg2));
-    }
-    if (arg3 != null) {
-      matchers.add(wrapMatcher(arg3));
-    }
-    if (arg4 != null) {
-      matchers.add(wrapMatcher(arg4));
-    }
-    if (arg5 != null) {
-      matchers.add(wrapMatcher(arg5));
-    }
-    if (arg6 != null) {
-      matchers.add(wrapMatcher(arg6));
-    }
-    return new _AllOf(matchers);
-  }
+  return new _AllOf(_wrapArgs(arg0, arg1, arg2, arg3, arg4, arg5, arg6));
 }
 
 class _AllOf extends Matcher {
-  final Iterable<Matcher> _matchers;
+  final List<Matcher> _matchers;
 
   const _AllOf(this._matchers);
 
@@ -99,17 +64,15 @@ class _AllOf extends Matcher {
       description.addAll('(', ' and ', ')', _matchers);
 }
 
-/**
- * Matches if any of the given matchers evaluate to true. The
- * arguments can be a set of matchers as separate parameters
- * (up to 7), or a List of matchers.
- *
- * The matchers are evaluated from left to right using short-circuit
- * evaluation, so evaluation stops as soon as a matcher returns true.
- *
- * Any argument that is not a matcher is implicitly wrapped in a
- * Matcher to check for equality.
-*/
+/// Matches if any of the given matchers evaluate to true. The
+/// arguments can be a set of matchers as separate parameters
+/// (up to 7), or a List of matchers.
+///
+/// The matchers are evaluated from left to right using short-circuit
+/// evaluation, so evaluation stops as soon as a matcher returns true.
+///
+/// Any argument that is not a matcher is implicitly wrapped in a
+/// Matcher to check for equality.
 
 Matcher anyOf(arg0,
                [arg1 = null,
@@ -118,59 +81,62 @@ Matcher anyOf(arg0,
                 arg4 = null,
                 arg5 = null,
                 arg6 = null]) {
-  if (arg0 is List) {
-    expect(arg1, isNull);
-    expect(arg2, isNull);
-    expect(arg3, isNull);
-    expect(arg4, isNull);
-    expect(arg5, isNull);
-    expect(arg6, isNull);
-    for (int i = 0; i < arg0.length; i++) {
-      arg0[i] = wrapMatcher(arg0[i]);
-    }
-    return new _AnyOf(arg0);
-  } else {
-    List matchers = new List();
-    if (arg0 != null) {
-      matchers.add(wrapMatcher(arg0));
-    }
-    if (arg1 != null) {
-      matchers.add(wrapMatcher(arg1));
-    }
-    if (arg2 != null) {
-      matchers.add(wrapMatcher(arg2));
-    }
-    if (arg3 != null) {
-      matchers.add(wrapMatcher(arg3));
-    }
-    if (arg4 != null) {
-      matchers.add(wrapMatcher(arg4));
-    }
-    if (arg5 != null) {
-      matchers.add(wrapMatcher(arg5));
-    }
-    if (arg6 != null) {
-      matchers.add(wrapMatcher(arg6));
-    }
-    return new _AnyOf(matchers);
-  }
+  return new _AnyOf(_wrapArgs(arg0, arg1, arg2, arg3, arg4, arg5, arg6));
 }
 
 class _AnyOf extends Matcher {
-  final Iterable<Matcher> _matchers;
+  final List<Matcher> _matchers;
 
   const _AnyOf(this._matchers);
 
   bool matches(item, Map matchState) {
-     for (var matcher in _matchers) {
-       if (matcher.matches(item, matchState)) {
-         return true;
-       }
-     }
-     return false;
+    for (var matcher in _matchers) {
+      if (matcher.matches(item, matchState)) {
+        return true;
+      }
+    }
+    return false;
   }
 
   Description describe(Description description) =>
     description.addAll('(', ' or ', ')', _matchers);
 }
 
+List<Matcher> _wrapArgs(arg0, arg1, arg2, arg3, arg4, arg5, arg6) {
+  if (arg0 is List) {
+    // TODO(kevmoo) throw a more helpful error here if any of these args is
+    // not null
+    expect(arg1, isNull);
+    expect(arg2, isNull);
+    expect(arg3, isNull);
+    expect(arg4, isNull);
+    expect(arg5, isNull);
+    expect(arg6, isNull);
+
+    return arg0.map((a) => wrapMatcher(a)).toList();
+  }
+
+  List matchers = new List();
+  if (arg0 != null) {
+    matchers.add(wrapMatcher(arg0));
+  }
+  if (arg1 != null) {
+    matchers.add(wrapMatcher(arg1));
+  }
+  if (arg2 != null) {
+    matchers.add(wrapMatcher(arg2));
+  }
+  if (arg3 != null) {
+    matchers.add(wrapMatcher(arg3));
+  }
+  if (arg4 != null) {
+    matchers.add(wrapMatcher(arg4));
+  }
+  if (arg5 != null) {
+    matchers.add(wrapMatcher(arg5));
+  }
+  if (arg6 != null) {
+    matchers.add(wrapMatcher(arg6));
+  }
+  return matchers;
+}