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#![allow(unused_imports)]
#![forbid(unsafe_code)]
#![doc = include_str!("../README.md")]
#![doc(
    html_logo_url = "https://raw.githubusercontent.com/42ByteLabs/geekorm/main/assets/geekorm.png"
)]

extern crate proc_macro;
extern crate proc_macro2;
extern crate quote;
extern crate syn;

#[macro_use]
mod macros;

mod attr;
mod derive;
mod errors;
mod internal;
mod parsers;

use parsers::derive_parser;
use proc_macro::TokenStream;
use quote::{quote, ToTokens};
use syn::{parse_macro_input, Data, DataStruct, DeriveInput, Fields};

/// Derive macro for `GeekTable` trait.
///
/// This macro will generate the implementation of `GeekTable` trait for the given struct.
/// The struct must have named fields.
///
/// # Example
///
/// This macro generates a number of methods for the struct, including `table` and `table_name` methods.
///
/// ```rust
/// use geekorm::{GeekTable, PrimaryKeyInteger};
/// use geekorm::prelude::*;
///
/// #[derive(GeekTable)]
/// struct Users {
///     id: PrimaryKeyInteger,
///     name: String,
///     age: i32,
///     occupation: String,
/// }
///
/// // This will get you the underlying table information.
/// let table = Users::table();
/// assert_eq!(Users::table_name(), "Users");
/// ```
#[proc_macro_derive(GeekTable, attributes(geekorm))]
pub fn table_derive(input: TokenStream) -> TokenStream {
    let ast: DeriveInput = parse_macro_input!(input as DeriveInput);

    derive_parser(&ast).unwrap().into()
}