Returning a parse error instead of panicking when parsing a text change

Dependencies

• [2] VO5OQW4W Removing anyhow in libpijul
• [3] KJDQ2WOM Fixing the parsing of section headers in the text change format
• [4] 65S67T3E Parsing \\ for empty additions (rare problem)

Change contents

• replacement in libpijul/src/change/text_changes.rs at line 14
  [2.38280]→[2.38280:38317](∅→∅)
  − #[error("Missing change [{0}]")]
  [2.38280]

  [2.38317]
  + #[error("Missing dependency [{0}]")]
• edit in libpijul/src/change/text_changes.rs at line 16
  [2.38343]

  [2.38343]
  + #[error("Byte position {0} from this change missing")]

  + MissingPosition(u64),
• replacement in libpijul/src/change/text_changes.rs at line 598
  [2.61086]→[2.61086:61137](∅→∅)
  − v.inode = parse_pos(changes, &cap[4]);
  [2.61086]

  [2.61137]
  + v.inode = parse_pos(changes, &cap[4])?;
• replacement in libpijul/src/change/text_changes.rs at line 614
  [2.61673]→[2.61673:61724](∅→∅)
  − v.inode = parse_pos(changes, &cap[4]);
  [2.61673]

  [2.61724]
  + v.inode = parse_pos(changes, &cap[4])?;
• replacement in libpijul/src/change/text_changes.rs at line 631
  [2.62330]→[2.62330:62383](∅→∅)
  − del.inode = parse_pos(changes, &cap[3]);
  [2.62330]

  [2.62383]
  + del.inode = parse_pos(changes, &cap[3])?;
• replacement in libpijul/src/change/text_changes.rs at line 645
  [2.62844]→[2.62844:62899](∅→∅)
  − undel.inode = parse_pos(changes, &cap[3]);
  [2.62844]

  [2.62899]
  + undel.inode = parse_pos(changes, &cap[3])?;
• replacement in libpijul/src/change/text_changes.rs at line 660
  [2.63402]→[2.63402:63456](∅→∅)
  − name.inode = parse_pos(changes, &cap[6]);
  [2.63402]

  [2.63456]
  + name.inode = parse_pos(changes, &cap[6])?;
• replacement in libpijul/src/change/text_changes.rs at line 695
  [2.64794]→[2.64794:64875](∅→∅)
  − del.inode = parse_pos(changes, cap.name("inode").unwrap().as_str());
  [2.64794]

  [2.64875]
  + del.inode = parse_pos(changes, cap.name("inode").unwrap().as_str())?;
• replacement in libpijul/src/change/text_changes.rs at line 710
  [2.65381]→[2.65381:65434](∅→∅)
  − add.inode = parse_pos(changes, &cap[3]);
  [2.65381]

  [2.65434]
  + add.inode = parse_pos(changes, &cap[3])?;
• replacement in libpijul/src/change/text_changes.rs at line 729
  [2.66052]→[2.66052:66111](∅→∅)
  − v.inode = parse_pos(changes, &cap[7]);
  [2.66052]

  [2.66111]
  + v.inode = parse_pos(changes, &cap[7])?;
• replacement in libpijul/src/change/text_changes.rs at line 739
  [2.66489]→[2.66489:66548](∅→∅)
  − v.inode = parse_pos(changes, &cap[7]);
  [2.66489]

  [2.66548]
  + v.inode = parse_pos(changes, &cap[7])?;
• replacement in libpijul/src/change/text_changes.rs at line 754
  [2.67073]→[2.67073:67153](∅→∅)
  − v.inode = parse_pos(changes, &cap.name("inode").unwrap().as_str());
  [2.67073]

  [2.67153]
  + v.inode = parse_pos(changes, &cap.name("inode").unwrap().as_str())?;
• replacement in libpijul/src/change/text_changes.rs at line 819
  [2.70156]→[2.70156:70223](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.70156]

  [2.70223]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 841
  [2.71065]→[2.71065:71132](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.71065]

  [2.71132]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 863
  [2.71968]→[2.71968:72035](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.71968]

  [2.72035]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 917
  [2.74748]→[2.74748:74822](∅→∅)
  − } else if let Some(edges) = parse_edges(changes, h) {
  [2.74748]

  [2.74822]
  + } else if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 954
  [2.76569]→[2.76569:76643](∅→∅)
  − } else if let Some(edges) = parse_edges(changes, h) {
  [2.76569]

  [2.76643]
  + } else if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 964
  [2.77031]→[2.77031:77098](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.77031]

  [2.77098]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 1001
  [2.79104]→[2.79104:79171](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.79104]

  [2.79171]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 1009
  [2.79462]→[2.79462:79529](∅→∅)
  − if let Some(edges) = parse_edges(changes, h) {
  [2.79462]

  [2.79529]
  + if let Some(edges) = parse_edges(changes, h)? {
• replacement in libpijul/src/change/text_changes.rs at line 1077
  [2.81622]→[2.81622:81686](∅→∅)
  − return Err(TextDeError::MissingChange(change));
  [2.81622]

  [2.81686]
  + return Err(TextDeError::MissingPosition(pos));
• replacement in libpijul/src/change/text_changes.rs at line 1083
  [2.81786]→[2.81786:81835](∅→∅)
  − change: change_ref(changes, change),
  [2.81786]

  [2.81835]
  + change: change_ref(changes, change)?,
• replacement in libpijul/src/change/text_changes.rs at line 1090
  [2.81882]→[2.81882:81961](∅→∅)
  − fn change_ref(changes: &HashMap<usize, Hash>, change: usize) -> Option<Hash> {
  [2.81882]

  [2.81961]
  + fn change_ref(changes: &HashMap<usize, Hash>, change: usize) -> Result<Option<Hash>, TextDeError> {
• replacement in libpijul/src/change/text_changes.rs at line 1093
  [2.82035]→[2.82035:82048](∅→∅)
  − None
  [2.82035]

  [2.82048]
  + Ok(None)
• replacement in libpijul/src/change/text_changes.rs at line 1095
  [2.82076]→[2.82076:82101](∅→∅)
  − Some(Hash::None)
  [2.82076]

  [2.82101]
  + Ok(Some(Hash::None))

  + } else if let Some(&c) = changes.get(&change) {

  + Ok(Some(c))
• replacement in libpijul/src/change/text_changes.rs at line 1099
  [2.82114]→[2.82114:82159](∅→∅)
  − Some(*changes.get(&change).unwrap())
  [2.82114]

  [2.82159]
  + Err(TextDeError::MissingChange(change))
• replacement in libpijul/src/change/text_changes.rs at line 1103
  [2.82168]→[2.82168:82254](∅→∅)
  − pub fn parse_pos(changes: &HashMap<usize, Hash>, s: &str) -> Position<Option<Hash>> {
  [2.82168]

  [2.82254]
  + pub fn parse_pos(

  + changes: &HashMap<usize, Hash>,

  + s: &str,

  + ) -> Result<Position<Option<Hash>>, TextDeError> {
• replacement in libpijul/src/change/text_changes.rs at line 1110
  [2.82393]→[2.82393:82453](∅→∅)
  − Position {

  − change: change_ref(changes, change),
  [2.82393]

  [2.82453]
  + Ok(Position {

  + change: change_ref(changes, change)?,
• replacement in libpijul/src/change/text_changes.rs at line 1113
  [2.82487]→[2.82487:82493](∅→∅)
  − }
  [2.82487]

  [2.82493]
  + })
• replacement in libpijul/src/change/text_changes.rs at line 1116
  [2.82496]→[2.82496:82596](∅→∅)
  − pub fn parse_edges(changes: &HashMap<usize, Hash>, s: &str) -> Option<Vec<NewEdge<Option<Hash>>>> {
  [2.82496]

  [2.82596]
  + pub fn parse_edges(

  + changes: &HashMap<usize, Hash>,

  + s: &str,

  + ) -> Result<Option<Vec<NewEdge<Option<Hash>>>>, TextDeError> {
• replacement in libpijul/src/change/text_changes.rs at line 1137
  [2.83547]→[2.83547:83605](∅→∅)
  − change: change_ref(changes, change0),
  [2.83547]

  [2.83605]
  + change: change_ref(changes, change0)?,
• replacement in libpijul/src/change/text_changes.rs at line 1141
  [2.83700]→[2.83700:83758](∅→∅)
  − change: change_ref(changes, change1),
  [2.83700]

  [2.83758]
  + change: change_ref(changes, change1)?,
• replacement in libpijul/src/change/text_changes.rs at line 1145
  [2.83875]→[2.83875:83942](∅→∅)
  − introduced_by: change_ref(changes, introduced_by),
  [2.83875]

  [2.83942]
  + introduced_by: change_ref(changes, introduced_by)?,
• replacement in libpijul/src/change/text_changes.rs at line 1149
  [2.84008]→[2.84008:84033](∅→∅)
  − return None;
  [2.84008]

  [2.84033]
  + return Ok(None);
• replacement in libpijul/src/change/text_changes.rs at line 1152
  [2.84049]→[2.84049:84066](∅→∅)
  − Some(result)
  [2.84049]

  [2.84066]
  + Ok(Some(result))