Function writeQuery

internal/githubv4mock/query.go:123–155

writeQuery writes a minified query for t to w. If inline is true, the struct fields of t are inlined into parent struct.

(w io.Writer, t reflect.Type, inline bool)

// writeQuery writes a minified query for t to w.
// If inline is true, the struct fields of t are inlined into parent struct.
func writeQuery(w io.Writer, t reflect.Type, inline bool) {
	switch t.Kind() {
	case reflect.Ptr, reflect.Slice:
		writeQuery(w, t.Elem(), false)
	case reflect.Struct:
		// If the type implements json.Unmarshaler, it's a scalar. Don't expand it.
		if reflect.PointerTo(t).Implements(jsonUnmarshaler) {
			return
		}
		if !inline {
			_, _ = io.WriteString(w, "{")
		}
		for i := 0; i < t.NumField(); i++ {
			if i != 0 {
				_, _ = io.WriteString(w, ",")
			}
			f := t.Field(i)
			value, ok := f.Tag.Lookup("graphql")
			inlineField := f.Anonymous && !ok
			if !inlineField {
				if ok {
					_, _ = io.WriteString(w, value)
				} else {
					_, _ = io.WriteString(w, ident.ParseMixedCaps(f.Name).ToLowerCamelCase())
				}
			}
			writeQuery(w, f.Type, inlineField)
		}
		if !inline {
			_, _ = io.WriteString(w, "}")
		}
	}
}

var jsonUnmarshaler = reflect.TypeOf((*json.Unmarshaler)(nil)).Elem()