1 files changed, 70 insertions, 0 deletions
diff --git a/src/mongo/gotools/vendor/src/github.com/jacobsa/oglematchers/all_of.go b/src/mongo/gotools/vendor/src/github.com/jacobsa/oglematchers/all_of.go
new file mode 100644
index 00000000000..d93a9740443
--- /dev/null
+++ b/src/mongo/gotools/vendor/src/github.com/jacobsa/oglematchers/all_of.go
@@ -0,0 +1,70 @@
+// Copyright 2011 Aaron Jacobs. All Rights Reserved.
+// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package oglematchers
+
+import (
+	"strings"
+)
+
+// AllOf accepts a set of matchers S and returns a matcher that follows the
+// algorithm below when considering a candidate c:
+//
+//  1. Return true if for every Matcher m in S, m matches c.
+//
+//  2. Otherwise, if there is a matcher m in S such that m returns a fatal
+//     error for c, return that matcher's error message.
+//
+//  3. Otherwise, return false with the error from some wrapped matcher.
+//
+// This is akin to a logical AND operation for matchers.
+func AllOf(matchers ...Matcher) Matcher {
+	return &allOfMatcher{matchers}
+}
+
+type allOfMatcher struct {
+	wrappedMatchers []Matcher
+}
+
+func (m *allOfMatcher) Description() string {
+	// Special case: the empty set.
+	if len(m.wrappedMatchers) == 0 {
+		return "is anything"
+	}
+
+	// Join the descriptions for the wrapped matchers.
+	wrappedDescs := make([]string, len(m.wrappedMatchers))
+	for i, wrappedMatcher := range m.wrappedMatchers {
+		wrappedDescs[i] = wrappedMatcher.Description()
+	}
+
+	return strings.Join(wrappedDescs, ", and ")
+}
+
+func (m *allOfMatcher) Matches(c interface{}) (err error) {
+	for _, wrappedMatcher := range m.wrappedMatchers {
+		if wrappedErr := wrappedMatcher.Matches(c); wrappedErr != nil {
+			err = wrappedErr
+
+			// If the error is fatal, return immediately with this error.
+			_, ok := wrappedErr.(*FatalError)
+			if ok {
+				return
+			}
+		}
+	}
+
+	return
+}