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Add support for raw pointers in Rust

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This commit is contained in:
Alex Crichton
2017-12-20 07:35:14 -08:00
parent 737bd8c965
commit 66ae545bff
3 changed files with 58 additions and 1 deletions
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32
crates/wasm-bindgen-macro/src/lib.rs
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@ -189,6 +189,12 @@ fn bindgen(export_name: &syn::Lit,
ast::Type::Integer(i) => {
args.push(my_quote! { #ident: #i });
}
ast::Type::RawMutPtr(i) => {
args.push(my_quote! { #ident: *mut #i });
}
ast::Type::RawConstPtr(i) => {
args.push(my_quote! { #ident: *const #i });
}
ast::Type::BorrowedStr => {
malloc = malloc || !MALLOC_GENERATED.swap(true, Ordering::SeqCst);
let ptr = syn::Ident::from(format!("arg{}_ptr", i));
@ -266,6 +272,14 @@ fn bindgen(export_name: &syn::Lit,
ret_ty = my_quote! { -> #i };
convert_ret = my_quote! { #ret };
}
Some(&ast::Type::RawMutPtr(i)) => {
ret_ty = my_quote! { -> *mut #i };
convert_ret = my_quote! { #ret };
}
Some(&ast::Type::RawConstPtr(i)) => {
ret_ty = my_quote! { -> *const #i };
convert_ret = my_quote! { #ret };
}
Some(&ast::Type::BorrowedStr) => panic!("can't return a borrowed string"),
Some(&ast::Type::ByRef(_)) => panic!("can't return a borrowed ref"),
Some(&ast::Type::ByMutRef(_)) => panic!("can't return a borrowed ref"),
@ -430,6 +444,16 @@ fn bindgen_import(import: &ast::Import, tokens: &mut Tokens) {
abi_arguments.push(my_quote! { #name: #i });
arg_conversions.push(my_quote! {});
}
ast::Type::RawMutPtr(i) => {
abi_argument_names.push(name);
abi_arguments.push(my_quote! { #name: *mut #i });
arg_conversions.push(my_quote! {});
}
ast::Type::RawConstPtr(i) => {
abi_argument_names.push(name);
abi_arguments.push(my_quote! { #name: *const #i });
arg_conversions.push(my_quote! {});
}
ast::Type::BorrowedStr => {
let ptr = syn::Ident::from(format!("{}_ptr", name));
let len = syn::Ident::from(format!("{}_len", name));
@ -471,6 +495,14 @@ fn bindgen_import(import: &ast::Import, tokens: &mut Tokens) {
abi_ret = my_quote! { #i };
convert_ret = my_quote! { #ret_ident };
}
Some(ast::Type::RawConstPtr(i)) => {
abi_ret = my_quote! { *const #i };
convert_ret = my_quote! { #ret_ident };
}
Some(ast::Type::RawMutPtr(i)) => {
abi_ret = my_quote! { *mut #i };
convert_ret = my_quote! { #ret_ident };
}
Some(ast::Type::JsObject) => {
abi_ret = my_quote! { u32 };
convert_ret = my_quote! {