@top T { expr* }

expr {
 X { "x" } |
 String { '"' (stringContent | Interpolation)* stringEnd? }
}

Interpolation {
  InterpolationStart expr InterpolationEnd
}

@local tokens {
  stringEnd { '"' }
  InterpolationStart { "{{" }
  @else stringContent
}

@tokens {
  InterpolationEnd { "}}" }
}

//! Tokens from a local token group used together with other tokens (stringEnd with "\"")
