Method Peek

tensorflow/core/lib/strings/scanner.h:154–156

Return the next character that will be scanned, or if there are no more characters to scan. Note that if a scan operation has failed (so GetResult() returns false), then the value of Peek may or may not have advanced since the scan operation that failed.

  // then the value of Peek may or may not have advanced since the scan
  // operation that failed.
  char Peek(char default_value = '\0') const {
    return cur_.empty() ? default_value : cur_[0];
  }

  // Returns false if there are no remaining characters to consume.
  int empty() const { return cur_.empty(); }