Method add_part

src/parser.rs:248–329

Ref: https://wicg.github.io/urlpattern/#add-a-part

(
    &mut self,
    prefix: &str,
    name_token: Option<Token>,
    regexp_or_wildcard_token: Option<Token>,
    suffix: &str,
    modifier_token: Option<Token>,
  )

  // Ref: https://wicg.github.io/urlpattern/#add-a-part
  fn add_part(
    &mut self,
    prefix: &str,
    name_token: Option<Token>,
    regexp_or_wildcard_token: Option<Token>,
    suffix: &str,
    modifier_token: Option<Token>,
  ) -> Result<(), Error> {
    let mut modifier = PartModifier::None;
    if let Some(modifier_token) = modifier_token {
      modifier = match modifier_token.value {
        "?" => PartModifier::Optional,
        "*" => PartModifier::ZeroOrMore,
        "+" => PartModifier::OneOrMore,
        _ => unreachable!(),
      };
    }
    if name_token.is_none()
      && regexp_or_wildcard_token.is_none()
      && modifier == PartModifier::None
    {
      self.pending_fixed_value.push_str(prefix);
      return Ok(());
    }
    self.maybe_add_part_from_pending_fixed_value()?;
    if name_token.is_none() && regexp_or_wildcard_token.is_none() {
      assert!(suffix.is_empty());
      if prefix.is_empty() {
        return Ok(());
      }
      let encoded_value = (self.encoding_callback)(prefix)?;
      self.part_list.push(Part::new(
        PartType::FixedText,
        encoded_value,
        modifier,
      ));
      return Ok(());
    }

    let mut regexp_value = match &regexp_or_wildcard_token {
      None => self.segment_wildcard_regexp.to_owned(),
      Some(regexp_or_wildcard_token) => {
        if regexp_or_wildcard_token.kind == TokenType::Asterisk {
          FULL_WILDCARD_REGEXP_VALUE.to_string()
        } else {
          regexp_or_wildcard_token.value.to_owned()
        }
      }
    };

    let mut kind = PartType::Regexp;
    if regexp_value == self.segment_wildcard_regexp {
      kind = PartType::SegmentWildcard;
      regexp_value = String::new();
    } else if regexp_value == FULL_WILDCARD_REGEXP_VALUE {
      kind = PartType::FullWildcard;
      regexp_value = String::new();
    }