windjammer 0.48.0

// std/db - Database access with proper abstraction
// Implementation: sqlx (hidden from users)

// PUBLIC API - Users interact with these types only

struct Connection {
    // Private: Wraps sqlx pool/connection
    // Users should never see sqlx types
}

struct QueryBuilder {
    // Private: Wraps sqlx query builder
}

struct Row {
    // Private: Wraps sqlx row
}

struct Transaction {
    // Private: Wraps sqlx transaction
}

// Connection Management

@async
fn connect(url: string) -> Result<Connection, string> {
    // Implementation wraps: sqlx::SqlitePool::connect(url).await
    // For now, returns error as parser can't handle this yet
    Err("Database connections will work after parser improvements in v0.14.0")
}

// Connection Methods

impl Connection {
    @async
    fn execute(self, sql: string) -> QueryBuilder {
        // Wraps: sqlx::query(sql).execute(pool)
        QueryBuilder {}
    }
    
    @async
    fn query(self, sql: string) -> QueryBuilder {
        // Wraps: sqlx::query_as(sql)
        QueryBuilder {}
    }
    
    @async
    fn close(self) {
        // Wraps: pool.close()
    }
}

// Query Building

impl QueryBuilder {
    fn bind<T>(self, value: T) -> QueryBuilder {
        // Wraps: query.bind(value)
        self
    }
    
    @async
    fn execute(self) -> Result<(), string> {
        // Wraps: query.execute(pool).await
        Ok(())
    }
    
    @async
    fn fetch_all(self) -> Result<Vec<Row>, string> {
        // Wraps: query.fetch_all(pool).await
        Ok(vec![])
    }
    
    @async
    fn fetch_one(self) -> Result<Row, string> {
        // Wraps: query.fetch_one(pool).await
        Err("Not yet implemented")
    }
}

// Row Access

impl Row {
    fn get<T>(self, index: int) -> Result<T, string> {
        // Wraps: row.get(index)
        Err("Not yet implemented")
    }
    
    fn get_by_name<T>(self, name: string) -> Result<T, string> {
        // Wraps: row.try_get(name)
        Err("Not yet implemented")
    }
}

// USAGE EXAMPLES (what users should write):
//
// @async
// fn main() {
//     // Windjammer API - no sqlx exposed! ✅
//     let conn = db.connect("sqlite::memory:").await?
//     
//     conn.execute("CREATE TABLE users (id INTEGER, name TEXT)").await?
//     
//     conn.execute("INSERT INTO users VALUES (?, ?)")
//         .bind(1)
//         .bind("Alice")
//         .await?
//     
//     let rows = conn.query("SELECT * FROM users")
//         .fetch_all()
//         .await?
//     
//     for row in rows {
//         let id = row.get::<int>(0)?
//         let name = row.get::<string>(1)?
//         println!("User {} - {}", id, name)
//     }
// }
//
// NOT THIS (sqlx exposed): ❌
// let pool = sqlx::SqlitePool::connect("...").await?
// sqlx::query("SELECT * FROM users").execute(&pool).await?

// NOTE: Full implementation requires parser improvements for nested paths
// Coming in v0.14.0 parser enhancements