Function containerIs

json_fuzz_test.go:1000–1012

============================================================================= Enhanced path-shape checker (catches nested D6 divergences) ============================================================================= containerIs reports whether data's first non-whitespace byte equals open. Used to ch

(data []byte, open byte)

// containerIs reports whether data's first non-whitespace byte equals open.
// Used to check whether a JSON value is an object ('{') or array ('[').
func containerIs(data []byte, open byte) bool {
	for _, b := range data {
		switch b {
		case ' ', '\t', '\n', '\r':
			continue
		case open:
			return true
		default:
			return false
		}
	}
	return false
}

// pathShapeMatchesData is a stricter version of pathShapeMatchesRoot that
// also verifies container-type compatibility at EVERY nesting level, not