Method insert

atomic-core/src/change/format_v3/hash_table.rs:267–280

Insert a hash into the table, returning its index. If the hash is already in the table, returns its existing index without inserting a duplicate (idempotent operation). # Arguments `hash` - The 32-byte Blake3 hash to insert. # Returns The `HashIndex` for this hash (either newly assigned or existing). # Errors - [`FormatError::HashTableFull`] if the table already has [`MAX_HASH_TABLE_ENTRIES

(&mut self, hash: [u8; 32])

    /// assert_eq!(table.len(), 2); // self + 1 dep
    /// ```
    pub fn insert(&mut self, hash: [u8; 32]) -> FormatResult<HashIndex> {
        if let Some(&existing) = self.index_map.get(&hash) {
            return Ok(existing);
        }

        if self.hashes.len() >= MAX_HASH_TABLE_ENTRIES {
            return Err(FormatError::HashTableFull);
        }

        let index = self.hashes.len() as HashIndex;
        self.hashes.push(hash);
        self.index_map.insert(hash, index);
        Ok(index)
    }

    /// Look up the index for a given hash.
    ///