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Fix String type in imports

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This commit is contained in:
Alex Crichton
2018-02-06 08:39:49 -08:00
parent d2f2ed8c1a
commit 28966d9853
3 changed files with 78 additions and 11 deletions
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13
crates/wasm-bindgen-macro/src/lib.rs
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@ -583,15 +583,18 @@ fn bindgen_import_function(import: &ast::ImportFunction,
// TODO: add a test for this
Some(ast::Type::String) => {
let name = syn::Ident::from("__ret_strlen");
abi_argument_names.push(name);
abi_arguments.push(my_quote! { #name: *mut usize });
let name_ptr = syn::Ident::from("__ret_strlen_ptr");
abi_argument_names.push(name_ptr);
abi_arguments.push(my_quote! { #name_ptr: *mut usize });
arg_conversions.push(my_quote! {
let mut #name = 0;
let mut #name_ptr = &mut #name as *mut usize;
});
abi_ret = my_quote! { *const u8 };
abi_ret = my_quote! { *mut u8 };
convert_ret = my_quote! {
let __v = Vec::from_raw_parts(#ret_ident, #name, #name);
String::from_utf8_unchecked(__v)
String::from_utf8_unchecked(
Vec::from_raw_parts(#ret_ident, #name, #name)
)
};
}
Some(ast::Type::BorrowedStr) |