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option model (#5)

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* option model

* enum model
This commit is contained in:
Aiden McClelland
2021-04-26 14:40:37 -06:00
committed by GitHub
parent 247c1712ba
commit 6094a4bb1c
6 changed files with 216 additions and 12 deletions
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54
patch-db-macro-internals/src/lib.rs
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@@ -162,6 +162,11 @@ fn build_model_struct(
#model_name(#inner_model::from(ptr))
}
}
impl AsRef<patch_db::json_ptr::JsonPointer> for #model_name {
fn as_ref(&self) -> &patch_db::json_ptr::JsonPointer {
self.0.as_ref()
}
}
impl From<patch_db::Model<#base_name>> for #model_name {
fn from(model: patch_db::Model<#base_name>) -> Self {
#model_name(#inner_model::from(patch_db::json_ptr::JsonPointer::from(model)))
@@ -237,6 +242,11 @@ fn build_model_struct(
#model_name(From::from(ptr))
}
}
impl AsRef<patch_db::json_ptr::JsonPointer> for #model_name {
fn as_ref(&self) -> &patch_db::json_ptr::JsonPointer {
self.0.as_ref()
}
}
impl From<patch_db::Model<#base_name>> for #model_name {
fn from(model: patch_db::Model<#base_name>) -> Self {
#model_name(model)
@@ -248,11 +258,41 @@ fn build_model_struct(
}
}
fn build_model_enum(base: &DeriveInput, ast: &DataEnum, model_name: Option<Ident>) -> TokenStream {
todo!(
"use {:?}, {:?} and {:?} to create a model that can become an enum of models",
base,
ast,
model_name
)
fn build_model_enum(base: &DeriveInput, _: &DataEnum, model_name: Option<Ident>) -> TokenStream {
let model_name = model_name.unwrap_or_else(|| {
Ident::new(
&format!("{}Model", base.ident),
proc_macro2::Span::call_site(),
)
});
let base_name = &base.ident;
let model_vis = &base.vis;
quote! {
#[derive(Debug, Clone)]
#model_vis struct #model_name(patch_db::Model<#base_name>);
impl core::ops::Deref for #model_name {
type Target = patch_db::Model<#base_name>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl From<patch_db::json_ptr::JsonPointer> for #model_name {
fn from(ptr: patch_db::json_ptr::JsonPointer) -> Self {
#model_name(From::from(ptr))
}
}
impl AsRef<patch_db::json_ptr::JsonPointer> for #model_name {
fn as_ref(&self) -> &patch_db::json_ptr::JsonPointer {
self.0.as_ref()
}
}
impl From<patch_db::Model<#base_name>> for #model_name {
fn from(model: patch_db::Model<#base_name>) -> Self {
#model_name(model)
}
}
impl patch_db::HasModel for #base_name {
type Model = #model_name;
}
}
}