Method encodeType

java/lib/src/main/java/io/github/ccxt/Exchange.java:2506–2525

(String primaryType, Map<String, List<Map<String, String>>> types)

    // encodeType per EIP-712: primaryType followed by sorted dependent struct types.
    private static String encodeType(String primaryType, Map<String, List<Map<String, String>>> types) {
        LinkedHashSet<String> deps = new LinkedHashSet<>();
        collectDependencies(primaryType, types, deps);
        deps.remove(primaryType);
        List<String> sortedDeps = new ArrayList<>(deps);
        java.util.Collections.sort(sortedDeps);
        sortedDeps.add(0, primaryType);
        StringBuilder sb = new StringBuilder();
        for (String typeName : sortedDeps) {
            sb.append(typeName).append("(");
            List<Map<String, String>> fields = types.get(typeName);
            for (int i = 0; i < fields.size(); i++) {
                if (i > 0) sb.append(",");
                Map<String, String> field = fields.get(i);
                sb.append(field.get("type")).append(" ").append(field.get("name"));
            }
            sb.append(")");
        }
        return sb.toString();
    }

    private static void collectDependencies(String typeName, Map<String, List<Map<String, String>>> types, LinkedHashSet<String> deps) {
        if (!types.containsKey(typeName) || deps.contains(typeName)) return;