1 files changed, 22 insertions, 0 deletions
diff --git a/vendor/github.com/vektah/gqlparser/validator/rules/unique_fragment_names.go b/vendor/github.com/vektah/gqlparser/validator/rules/unique_fragment_names.go
new file mode 100644
index 00000000..46a8b7c7
--- /dev/null
+++ b/vendor/github.com/vektah/gqlparser/validator/rules/unique_fragment_names.go
@@ -0,0 +1,22 @@
+package validator
+
+import (
+	"github.com/vektah/gqlparser/ast"
+	. "github.com/vektah/gqlparser/validator"
+)
+
+func init() {
+	AddRule("UniqueFragmentNames", func(observers *Events, addError AddErrFunc) {
+		seenFragments := map[string]bool{}
+
+		observers.OnFragment(func(walker *Walker, fragment *ast.FragmentDefinition) {
+			if seenFragments[fragment.Name] {
+				addError(
+					Message(`There can be only one fragment named "%s".`, fragment.Name),
+					At(fragment.Position),
+				)
+			}
+			seenFragments[fragment.Name] = true
+		})
+	})
+}