2020-03-01 10:54:34 +00:00
|
|
|
use crate::args;
|
2020-03-02 00:24:49 +00:00
|
|
|
use crate::utils::get_crate_name;
|
2020-03-01 10:54:34 +00:00
|
|
|
use proc_macro::TokenStream;
|
|
|
|
use quote::quote;
|
2020-03-01 13:35:39 +00:00
|
|
|
use syn::{Data, DeriveInput, Error, Result};
|
2020-03-01 10:54:34 +00:00
|
|
|
|
2020-03-03 03:48:00 +00:00
|
|
|
pub fn generate(object_args: &args::InputObject, input: &DeriveInput) -> Result<TokenStream> {
|
2020-03-02 00:24:49 +00:00
|
|
|
let crate_name = get_crate_name(object_args.internal);
|
2020-03-01 10:54:34 +00:00
|
|
|
let ident = &input.ident;
|
2020-03-03 03:48:00 +00:00
|
|
|
let attrs = &input.attrs;
|
|
|
|
let vis = &input.vis;
|
2020-03-01 10:54:34 +00:00
|
|
|
let s = match &input.data {
|
|
|
|
Data::Struct(s) => s,
|
|
|
|
_ => return Err(Error::new_spanned(input, "It should be a struct.")),
|
|
|
|
};
|
|
|
|
|
2020-03-03 03:48:00 +00:00
|
|
|
let mut struct_fields = Vec::new();
|
|
|
|
for field in &s.fields {
|
|
|
|
let vis = &field.vis;
|
|
|
|
let ty = &field.ty;
|
|
|
|
let ident = &field.ident;
|
|
|
|
struct_fields.push(quote! {
|
|
|
|
#vis #ident: #ty
|
|
|
|
});
|
|
|
|
}
|
|
|
|
let new_struct = quote! {
|
|
|
|
#(#attrs)*
|
|
|
|
#vis struct #ident {
|
|
|
|
#(#struct_fields),*
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2020-03-01 10:54:34 +00:00
|
|
|
let gql_typename = object_args
|
|
|
|
.name
|
|
|
|
.clone()
|
|
|
|
.unwrap_or_else(|| ident.to_string());
|
2020-03-03 11:15:18 +00:00
|
|
|
let desc = object_args
|
|
|
|
.desc
|
|
|
|
.as_ref()
|
|
|
|
.map(|s| quote! {Some(#s)})
|
|
|
|
.unwrap_or_else(|| quote! {None});
|
2020-03-01 10:54:34 +00:00
|
|
|
|
2020-03-01 13:35:39 +00:00
|
|
|
let mut get_fields = Vec::new();
|
2020-03-01 16:52:05 +00:00
|
|
|
let mut get_json_fields = Vec::new();
|
2020-03-01 13:35:39 +00:00
|
|
|
let mut fields = Vec::new();
|
2020-03-03 03:48:00 +00:00
|
|
|
let mut schema_fields = Vec::new();
|
2020-03-01 16:52:05 +00:00
|
|
|
|
2020-03-01 10:54:34 +00:00
|
|
|
for field in &s.fields {
|
2020-03-01 13:35:39 +00:00
|
|
|
let field_args = args::InputField::parse(&field.attrs)?;
|
2020-03-01 10:54:34 +00:00
|
|
|
let ident = field.ident.as_ref().unwrap();
|
2020-03-01 13:35:39 +00:00
|
|
|
let ty = &field.ty;
|
|
|
|
let name = field_args.name.unwrap_or_else(|| ident.to_string());
|
2020-03-03 03:48:00 +00:00
|
|
|
let desc = field_args
|
|
|
|
.desc
|
|
|
|
.as_ref()
|
|
|
|
.map(|s| quote! {Some(#s)})
|
|
|
|
.unwrap_or_else(|| quote! {None});
|
|
|
|
let default = field_args
|
|
|
|
.default
|
|
|
|
.as_ref()
|
|
|
|
.map(|v| {
|
|
|
|
let s = v.to_string();
|
|
|
|
quote! {Some(#s)}
|
|
|
|
})
|
|
|
|
.unwrap_or_else(|| quote! {None});
|
2020-03-01 13:35:39 +00:00
|
|
|
get_fields.push(quote! {
|
2020-03-02 00:24:49 +00:00
|
|
|
let #ident:#ty = #crate_name::GQLInputValue::parse(obj.remove(#name).unwrap_or(#crate_name::Value::Null))?;
|
2020-03-01 13:35:39 +00:00
|
|
|
});
|
2020-03-01 16:52:05 +00:00
|
|
|
get_json_fields.push(quote! {
|
2020-03-02 00:24:49 +00:00
|
|
|
let #ident:#ty = #crate_name::GQLInputValue::parse_from_json(obj.remove(#name).unwrap_or(#crate_name::serde_json::Value::Null))?;
|
2020-03-01 16:52:05 +00:00
|
|
|
});
|
2020-03-01 13:35:39 +00:00
|
|
|
fields.push(ident);
|
2020-03-03 03:48:00 +00:00
|
|
|
schema_fields.push(quote! {
|
2020-03-03 11:15:18 +00:00
|
|
|
#crate_name::registry::InputValue {
|
2020-03-03 03:48:00 +00:00
|
|
|
name: #name,
|
|
|
|
description: #desc,
|
|
|
|
ty: <#ty as #crate_name::GQLType>::create_type_info(registry),
|
|
|
|
default_value: #default,
|
|
|
|
}
|
|
|
|
})
|
2020-03-01 10:54:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
let expanded = quote! {
|
2020-03-03 03:48:00 +00:00
|
|
|
#new_struct
|
2020-03-01 10:54:34 +00:00
|
|
|
|
2020-03-02 00:24:49 +00:00
|
|
|
impl #crate_name::GQLType for #ident {
|
|
|
|
fn type_name() -> std::borrow::Cow<'static, str> {
|
|
|
|
std::borrow::Cow::Borrowed(#gql_typename)
|
2020-03-01 10:54:34 +00:00
|
|
|
}
|
2020-03-03 03:48:00 +00:00
|
|
|
|
2020-03-03 11:15:18 +00:00
|
|
|
fn create_type_info(registry: &mut #crate_name::registry::Registry) -> String {
|
|
|
|
registry.create_type(&Self::type_name(), |registry| #crate_name::registry::Type::InputObject {
|
|
|
|
name: #gql_typename,
|
|
|
|
description: #desc,
|
|
|
|
input_fields: vec![#(#schema_fields),*]
|
2020-03-03 03:48:00 +00:00
|
|
|
})
|
|
|
|
}
|
2020-03-01 10:54:34 +00:00
|
|
|
}
|
|
|
|
|
2020-03-02 00:24:49 +00:00
|
|
|
impl #crate_name::GQLInputValue for #ident {
|
2020-03-03 11:15:18 +00:00
|
|
|
fn parse(value: #crate_name::Value) -> Option<Self> {
|
2020-03-02 11:25:21 +00:00
|
|
|
use #crate_name::GQLType;
|
|
|
|
|
2020-03-02 00:24:49 +00:00
|
|
|
if let #crate_name::Value::Object(mut obj) = value {
|
2020-03-01 13:35:39 +00:00
|
|
|
#(#get_fields)*
|
2020-03-03 11:15:18 +00:00
|
|
|
Some(Self { #(#fields),* })
|
2020-03-01 13:35:39 +00:00
|
|
|
} else {
|
2020-03-03 11:15:18 +00:00
|
|
|
None
|
2020-03-01 13:35:39 +00:00
|
|
|
}
|
|
|
|
}
|
2020-03-01 16:52:05 +00:00
|
|
|
|
2020-03-03 11:15:18 +00:00
|
|
|
fn parse_from_json(value: #crate_name::serde_json::Value) -> Option<Self> {
|
2020-03-02 11:25:21 +00:00
|
|
|
use #crate_name::GQLType;
|
2020-03-02 00:24:49 +00:00
|
|
|
if let #crate_name::serde_json::Value::Object(mut obj) = value {
|
2020-03-01 16:52:05 +00:00
|
|
|
#(#get_json_fields)*
|
2020-03-03 11:15:18 +00:00
|
|
|
Some(Self { #(#fields),* })
|
2020-03-01 16:52:05 +00:00
|
|
|
} else {
|
2020-03-03 11:15:18 +00:00
|
|
|
None
|
2020-03-01 16:52:05 +00:00
|
|
|
}
|
|
|
|
}
|
2020-03-01 10:54:34 +00:00
|
|
|
}
|
2020-03-01 13:35:39 +00:00
|
|
|
|
2020-03-02 00:24:49 +00:00
|
|
|
impl #crate_name::GQLInputObject for #ident {}
|
2020-03-01 10:54:34 +00:00
|
|
|
};
|
|
|
|
Ok(expanded.into())
|
|
|
|
}
|