Import tools: 5b883d86fdb4df55036d5dba2ca6f9dfa0750b44 from branch v3.3

ref: 1ac1389bda..5b883d86fd
for: 3.3.12

SERVER-25814 Initial vendor import: tools

1 files changed, 13 insertions, 0 deletions

diff --git a/src/mongo/gotools/common/json/maxkey.go b/src/mongo/gotools/common/json/maxkey.go
new file mode 100644
index 00000000000..6451fd9ae63
--- /dev/null
+++ b/src/mongo/gotools/common/json/maxkey.go
@@ -0,0 +1,13 @@
+package json
+
+// Transition functions for recognizing MaxKey.
+// Adapted from encoding/json/scanner.go.
+
+// stateUpperMa is the state after reading `Ma`.
+func stateUpperMa(s *scanner, c int) int {
+	if c == 'x' {
+		s.step = generateState("MaxKey", []byte("Key"), stateOptionalConstructor)
+		return scanContinue
+	}
+	return s.error(c, "in literal MaxKey (expecting 'x')")
+}