Function advance

source/text_handler.cpp:64–89

Advances |text| to first non white space character and writes the new position to |position|. If a null terminator is found during the text advance, SPV_END_OF_STREAM is returned, SPV_SUCCESS otherwise. No error checking is performed on the parameters, its the users responsibility to ensure these are non null.

// returned, SPV_SUCCESS otherwise. No error checking is performed on the
// parameters, its the users responsibility to ensure these are non null.
spv_result_t advance(spv_text text, spv_position position) {
  // NOTE: Consume white space, otherwise don't advance.
  while (true) {
    if (position->index >= text->length) return SPV_END_OF_STREAM;
    switch (text->str[position->index]) {
      case '\0':
        return SPV_END_OF_STREAM;
      case ';':
        if (spv_result_t error = advanceLine(text, position)) return error;
        continue;
      case ' ':
      case '\t':
      case '\r':
        position->column++;
        position->index++;
        continue;
      case '\n':
        position->column = 0;
        position->line++;
        position->index++;
        continue;
      default:
        return SPV_SUCCESS;
    }
  }
}

// Fetches the next word from the given text stream starting from the given
// *position. On success, writes the decoded word into *word and updates