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lib.rs
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lib.rs
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extern crate proc_macro;
use proc_macro::TokenStream;
use syn::{parse_macro_input, DeriveInput, Error};
mod attributes;
mod derives;
mod util;
#[proc_macro_derive(DeriveEntity, attributes(sea_orm))]
pub fn derive_entity(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
derives::expand_derive_entity(input)
.unwrap_or_else(Error::into_compile_error)
.into()
}
#[proc_macro_derive(DeriveEntityModel, attributes(sea_orm))]
pub fn derive_entity_model(input: TokenStream) -> TokenStream {
let input_ts = input.clone();
let DeriveInput {
ident, data, attrs, ..
} = parse_macro_input!(input as DeriveInput);
if ident != "Model" {
panic!("Struct name must be Model");
}
let mut ts: TokenStream = derives::expand_derive_entity_model(data, attrs)
.unwrap_or_else(Error::into_compile_error)
.into();
ts.extend(vec![
derive_model(input_ts.clone()),
derive_active_model(input_ts),
]);
ts
}
#[proc_macro_derive(DerivePrimaryKey)]
pub fn derive_primary_key(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_primary_key(ident, data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(DeriveColumn, attributes(sea_orm))]
pub fn derive_column(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_column(&ident, &data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(DeriveCustomColumn)]
pub fn derive_custom_column(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_custom_column(&ident, &data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(DeriveModel, attributes(sea_orm))]
pub fn derive_model(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
derives::expand_derive_model(input)
.unwrap_or_else(Error::into_compile_error)
.into()
}
#[proc_macro_derive(DeriveActiveModel, attributes(sea_orm))]
pub fn derive_active_model(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_active_model(ident, data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(DeriveIntoActiveModel, attributes(sea_orm))]
pub fn derive_into_active_model(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
derives::expand_into_active_model(input)
.unwrap_or_else(Error::into_compile_error)
.into()
}
#[proc_macro_derive(DeriveActiveModelBehavior)]
pub fn derive_active_model_behavior(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_active_model_behavior(ident, data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
/// A derive macro to implement `sea_orm::ActiveEnum` trait for enums.
///
/// # Limitations
///
/// This derive macros can only be used on enums.
///
/// # Macro Attributes
///
/// All macro attributes listed below have to be annotated in the form of `#[sea_orm(attr = value)]`.
///
/// - For enum
/// - `rs_type`: Define `ActiveEnum::Value`
/// - Possible values: `String`, `i8`, `i16`, `i32`, `i64`, `u8`, `u16`, `u32`, `u64`
/// - Note that value has to be passed as string, i.e. `rs_type = "i8"`
/// - `db_type`: Define `ColumnType` returned by `ActiveEnum::db_type()`
/// - Possible values: all available enum variants of `ColumnType`, e.g. `String(None)`, `String(Some(1))`, `Integer`
/// - Note that value has to be passed as string, i.e. `db_type = "Integer"`
///
/// - For enum variant
/// - `string_value` or `num_value`:
/// - For `string_value`, value should be passed as string, i.e. `string_value = "A"`
/// - For `num_value`, value should be passed as integer, i.e. `num_value = 1` or `num_value = 1i32`
/// - Note that only one of it can be specified, and all variants of an enum have to annotate with the same `*_value` macro attribute
#[proc_macro_derive(DeriveActiveEnum, attributes(sea_orm))]
pub fn derive_active_enum(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
match derives::expand_derive_active_enum(input) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(FromQueryResult)]
pub fn derive_from_query_result(input: TokenStream) -> TokenStream {
let DeriveInput { ident, data, .. } = parse_macro_input!(input);
match derives::expand_derive_from_query_result(ident, data) {
Ok(ts) => ts.into(),
Err(e) => e.to_compile_error().into(),
}
}
#[proc_macro_derive(DeriveRelation, attributes(sea_orm))]
pub fn derive_relation(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
derives::expand_derive_relation(input)
.unwrap_or_else(Error::into_compile_error)
.into()
}
#[doc(hidden)]
#[proc_macro_attribute]
pub fn test(_: TokenStream, input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as syn::ItemFn);
let ret = &input.sig.output;
let name = &input.sig.ident;
let body = &input.block;
let attrs = &input.attrs;
quote::quote! (
#[test]
#(#attrs)*
fn #name() #ret {
let _ = ::env_logger::builder()
.filter_level(::log::LevelFilter::Debug)
.is_test(true)
.try_init();
crate::block_on!(async { #body })
}
)
.into()
}