graphql: update gqlgen to 0.5.1

fix #6

1 files changed, 33 insertions, 0 deletions

diff --git a/vendor/github.com/vektah/gqlparser/validator/rules/unique_argument_names.go b/vendor/github.com/vektah/gqlparser/validator/rules/unique_argument_names.go
new file mode 100644
index 00000000..0ddcde72
--- /dev/null
+++ b/vendor/github.com/vektah/gqlparser/validator/rules/unique_argument_names.go
@@ -0,0 +1,33 @@
+package validator
+
+import (
+	"github.com/vektah/gqlparser/ast"
+	. "github.com/vektah/gqlparser/validator"
+)
+
+func init() {
+	AddRule("UniqueArgumentNames", func(observers *Events, addError AddErrFunc) {
+		observers.OnField(func(walker *Walker, field *ast.Field) {
+			checkUniqueArgs(field.Arguments, addError)
+		})
+
+		observers.OnDirective(func(walker *Walker, directive *ast.Directive) {
+			checkUniqueArgs(directive.Arguments, addError)
+		})
+	})
+}
+
+func checkUniqueArgs(args ast.ArgumentList, addError AddErrFunc) {
+	knownArgNames := map[string]bool{}
+
+	for _, arg := range args {
+		if knownArgNames[arg.Name] {
+			addError(
+				Message(`There can be only one argument named "%s".`, arg.Name),
+				At(arg.Position),
+			)
+		}
+
+		knownArgNames[arg.Name] = true
+	}
+}