// Minimal function for AOT/JIT plugin_invoke with String.length()
// Run JIT demo:
//   NYASH_USE_PLUGIN_BUILTINS=1 NYASH_JIT_EXEC=1 NYASH_JIT_THRESHOLD=1 \
//     ./target/release/nyash --backend vm examples/aot_min_string_len.hako
// Generate .o (if compiled):
//   NYASH_AOT_OBJECT_OUT=target/aot_objects \ 
//   NYASH_USE_PLUGIN_BUILTINS=1 NYASH_JIT_EXEC=1 NYASH_JIT_THRESHOLD=1 \
//     ./target/release/nyash --backend vm examples/aot_min_string_len.hako

static box Main {
  len1(s) {
    // Receiver is a parameter (JIT-friendly)
    return s.length()
  }
  main() {
    local s
    s = new StringBox()
    // Warm up: call len1 once to compile
    return me.len1(s)
  }
}