Built-in language plugins

sql

lang use sql
use cobra4.plugins.builtin.sql as _sql

_sql.configure("sqlite:///./app.db")    # or set COBRA4_SQL_URL

sql_run("CREATE TABLE IF NOT EXISTS users (id TEXT, age INT)")

adults = sql {
    SELECT id, name FROM users WHERE age >= :min
}    # → list[dict]

The plugin rewrites sql { ... } blocks to sql_run("...") calls. With configure(url) (or COBRA4_SQL_URL), execution is real via SQLAlchemy. Without configuration, sql_run returns the raw SQL text unchanged — useful for preview / dry-run.

regex

lang use regex

p = re"\d{3}-\d{4}"i               # `i` flag → re.IGNORECASE
matches = each line in lines where p.search(line) { line }

re"..."flags compiles to re.compile(..., flags) at module load.

yaml

lang use yaml

config = yaml"""
listen: 0.0.0.0:8080
debug: true
"""
log("config", port=config.listen)

Inline YAML is parsed at load time. Requires pip install cobra4[yaml].