#![allow(clippy::large_enum_variant)]
#![cfg_attr(
not(any(feature = "postgres", feature = "mysql", feature = "offline")),
allow(dead_code, unused_macros, unused_imports)
)]
#![cfg_attr(
any(sqlx_macros_unstable, procmacro2_semver_exempt),
feature(track_path, proc_macro_tracked_env)
)]
extern crate proc_macro;
use proc_macro::TokenStream;
use quote::quote;
use syn::parse::{Parse, ParseStream};
use syn::punctuated::Punctuated;
use syn::{parse_macro_input, DeriveInput, ItemFn, LitStr, Meta, Token};
type Error = Box<dyn std::error::Error>;
type Result<T> = std::result::Result<T, Error>;
mod common;
mod database;
mod derives;
mod query;
mod test_attr;
#[cfg(feature = "migrate")]
mod migrate;
struct ArgsParser(Punctuated<Meta, Token![,]>);
impl Parse for ArgsParser {
fn parse(input: ParseStream) -> syn::Result<Self> {
Ok(ArgsParser(Punctuated::<Meta, Token![,]>::parse_terminated(
input,
)?))
}
}
#[proc_macro]
pub fn expand_query(input: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(input as query::QueryMacroInput);
match query::expand_input(input) {
Ok(ts) => ts.into(),
Err(e) => {
if let Some(parse_err) = e.downcast_ref::<syn::Error>() {
parse_err.to_compile_error().into()
} else {
let msg = e.to_string();
quote!(::std::compile_error!(#msg)).into()
}
}
}
}
#[proc_macro_derive(Encode, attributes(sqlx))]
pub fn derive_encode(tokenstream: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(tokenstream as syn::DeriveInput);
match derives::expand_derive_encode(&input) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(Decode, attributes(sqlx))]
pub fn derive_decode(tokenstream: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(tokenstream as syn::DeriveInput);
match derives::expand_derive_decode(&input) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(Type, attributes(sqlx))]
pub fn derive_type(tokenstream: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(tokenstream as syn::DeriveInput);
match derives::expand_derive_type_encode_decode(&input) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(FromRow, attributes(sqlx))]
pub fn derive_from_row(input: TokenStream) -> TokenStream {
let input = syn::parse_macro_input!(input as syn::DeriveInput);
match derives::expand_derive_from_row(&input) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[cfg(feature = "migrate")]
#[proc_macro]
pub fn migrate(input: TokenStream) -> TokenStream {
use syn::LitStr;
let input = syn::parse_macro_input!(input as LitStr);
match migrate::expand_migrator_from_lit_dir(input) {
Ok(ts) => ts.into(),
Err(e) => {
if let Some(parse_err) = e.downcast_ref::<syn::Error>() {
parse_err.to_compile_error().into()
} else {
let msg = e.to_string();
quote!(::std::compile_error!(#msg)).into()
}
}
}
}
#[proc_macro_attribute]
pub fn test(
args: proc_macro::TokenStream,
input: proc_macro::TokenStream,
) -> proc_macro::TokenStream {
let args = parse_macro_input!(args as ArgsParser).0;
let input = parse_macro_input!(input as ItemFn);
test_attr::expand(args, input)
}