gqlgen: add a small program to go:generate the code

1 files changed, 28 insertions, 0 deletions

diff --git a/vendor/github.com/vektah/gqlgen/codegen/templates/input.gotpl b/vendor/github.com/vektah/gqlgen/codegen/templates/input.gotpl
new file mode 100644
index 00000000..6073daf4
--- /dev/null
+++ b/vendor/github.com/vektah/gqlgen/codegen/templates/input.gotpl
@@ -0,0 +1,28 @@
+	{{- if .IsMarshaled }}
+	func Unmarshal{{ .GQLType }}(v interface{}) ({{.FullName}}, error) {
+		var it {{.FullName}}
+		var asMap = v.(map[string]interface{})
+		{{ range $field := .Fields}}
+			{{- if $field.Default}}
+				if _, present := asMap[{{$field.GQLName|quote}}] ; !present {
+					asMap[{{$field.GQLName|quote}}] = {{ $field.Default | dump }}
+				}
+			{{- end}}
+		{{- end }}
+
+		for k, v := range asMap {
+			switch k {
+			{{- range $field := .Fields }}
+			case {{$field.GQLName|quote}}:
+				var err error
+				{{ $field.Unmarshal (print "it." $field.GoVarName) "v" }}
+				if err != nil {
+					return it, err
+				}
+			{{- end }}
+			}
+		}
+
+		return it, nil
+	}
+	{{- end }}