* Boot a new SlothDB instance backed by a WASM module. * Resolves once the database is open and ready for queries. * * @param {object}

Read a quoted JSON string into a std::string; handles simple escapes. Returns past the closing quote.

Materialise chunks into rows. One-shot — once built, subsequent GetValue calls hit the boxed copy. Callers that want to avoid this (typed-batch fetch)

Helper: read def_levels (bit-width 1) and populate def_mask (size n_values, byte-per-row, 1 = valid, 0 = null). For DATA_PAGE V1 the levels are prefix

Helpers for the background-download coordination below.

Connect to a SlothDB database. Args: path: Path to database file. Empty string for in-memory database. Returns: Connect

Simple wildcard match: '%' matches any run of chars. Used for the optional LIKE pattern on .tables.

Time one query through `exe -c '<sql>'`. Returns (seconds, error_or_None). Note: DuckDB's CLI exits 0 even on Conversion/Binder errors (printed t

Execute a SQL query and return a QueryResult. Materialisation is lazy: row tuples / numpy arrays / DataFrames are built on first acce

Append `s` as a JSON string literal. Escapes ", \, \n, \r, \t and control chars.

Expose the underlying auxiliary buffer (VectorStringBuffer for VARCHAR) as a shared_ptr - lets downstream owners (e.g. ColumnData) keep the buffer ali

Ingest one (string, count) pair into the bounded active table.

Walks an expression tree and replaces any aggregate BoundFunction with a BoundColumnRef pointing at the aggregate operator's output position. Each hoi

Walks an expression tree and rewrites any source-schema BoundColumnRef that matches a GROUP BY column to the aggregate's group-output position. Stops

Walks a SELECT-list / ORDER-BY expression top-down. If a subtree matches (structurally) one of the original GROUP BY expressions, replace it with a Bo

Queries where both engines ran and produced a timed result.

Parse a number literal; returns past the last digit/char.