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Backend refactor (#411)

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* remove BindgenAttrs from other backend::ast structs

This is primarily a tool for use with the macro crate. Most of
these attributes were ignored in the actual codegen, but a few
were still being used. This is confusing when trying to add
other sources for codegen (such as webidl and typescript).

* move parsing logic to macro crate

This makes the backend crate solely concerned with having an ast
for which we can generate code.
This commit is contained in:
R. Andrew Ohana
2018-07-07 10:20:31 -07:00
committed by Alex Crichton
parent 056b45aeed
commit 2d50d5209b
10 changed files with 1095 additions and 1053 deletions
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921
crates/backend/src/ast.rs
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File diff suppressed because it is too large Load Diff

23
crates/backend/src/codegen.rs
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@ -273,7 +273,7 @@ impl ToTokens for ast::StructField {
}
}).to_tokens(tokens);
if self.opts.readonly() {
if self.readonly {
return;
}
@ -356,12 +356,10 @@ impl ToTokens for ast::Export {
});
quote! { me.#name }
}
None => {
match &self.class {
Some(class) => quote! { #class::#name },
None => quote! { #name }
}
}
None => match &self.class {
Some(class) => quote! { #class::#name },
None => quote! { #name },
},
};
for (i, syn::ArgCaptured { ty, .. }) in self.function.arguments.iter().enumerate() {
@ -591,7 +589,10 @@ impl ToTokens for ast::ImportFunction {
ast::ImportFunctionKind::Method {
ref ty, ref kind, ..
} => {
if let ast::MethodKind::Normal = kind {
if let ast::MethodKind::Operation(ast::Operation {
is_static: false, ..
}) = kind
{
is_method = true;
}
class_ty = Some(ty);
@ -618,9 +619,7 @@ impl ToTokens for ast::ImportFunction {
subpat: None,
..
}) => ident.clone(),
syn::Pat::Wild(_) => {
syn::Ident::new(&format!("__genarg_{}", i), Span::call_site())
}
syn::Pat::Wild(_) => syn::Ident::new(&format!("__genarg_{}", i), Span::call_site()),
_ => panic!("unsupported pattern in foreign function"),
};
@ -664,7 +663,7 @@ impl ToTokens for ast::ImportFunction {
}
let mut exceptional_ret = quote!();
let exn_data = if self.function.opts.catch() {
let exn_data = if self.catch {
let exn_data = Ident::new("exn_data", Span::call_site());
let exn_data_ptr = Ident::new("exn_data_ptr", Span::call_site());
abi_argument_names.push(exn_data_ptr.clone());

3
crates/backend/src/lib.rs
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@ -4,9 +4,8 @@
extern crate proc_macro2;
#[macro_use]
extern crate quote;
#[macro_use]
extern crate syn;
extern crate serde_json;
extern crate syn;
extern crate wasm_bindgen_shared as shared;