Method isValid

src/main/java/net/starlark/java/syntax/Identifier.java:75–87

Reports whether the string is a valid identifier.

(String name)

  /** Reports whether the string is a valid identifier. */
  public static boolean isValid(String name) {
    // Keep consistent with Lexer.scanIdentifier.
    for (int i = 0; i < name.length(); i++) {
      char c = name.charAt(i);
      if (!(('a' <= c && c <= 'z')
          || ('A' <= c && c <= 'Z')
          || (i > 0 && '0' <= c && c <= '9')
          || (c == '_'))) {
        return false;
      }
    }
    return !name.isEmpty();
  }

  /**
   * Returns all names bound by an LHS expression.