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/*
 * Copyright 2023, Sayan Nandan <nandansayan@outlook.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

#[macro_export]
/// This macro can be used to create a [`Query`](struct@crate::Query), almost like a variadic function
///
/// ## Examples
/// ```
/// use skytable::query;
///
/// fn get_username() -> String { "sayan".to_owned() }
/// fn get_counter() -> u64 { 100 }
///
/// let query1 = query!("select * from myspace.mymodel WHERE username = ?", get_username());
/// assert_eq!(query1.param_cnt(), 1);
/// let query2 = query!("update myspace.mymodel set counter += ? WHERE username = ?", get_counter(), get_username());
/// assert_eq!(query2.param_cnt(), 2);
/// ```
macro_rules! query {
    ($query_str:expr) => { $crate::Query::from($query_str) };
    ($query_str:expr$(, $($query_param:expr),* $(,)?)?) => {{
        let mut q = $crate::Query::from($query_str); $($(q.push_param($query_param);)*)*q
    }};
}

macro_rules! pushlen {
    ($buf:expr, $len:expr) => {{
        let mut buf = ::itoa::Buffer::new();
        let r = ::itoa::Buffer::format(&mut buf, $len);
        $buf.extend(str::as_bytes(r));
        $buf.push(b'\n');
    }};
}

#[macro_export]
/// The `pipe!` macro is used to create pipelines
///
/// ## Example usage
/// ```
/// use skytable::{pipe, query};
///
/// let pipe = pipe!(query!("sysctl report status"), query!("use $current"));
/// assert_eq!(pipe.query_count(), 2);
/// ```
macro_rules! pipe {
    ($($query:expr),+) => {{
        let mut p = $crate::Pipeline::new();
        $(p.push_owned($query);)*p
    }}
}