Derive copy on generated structs when possible

This commit is contained in:
Pierre Krieger 2017-03-02 12:53:16 +01:00
parent 5233c4f57e
commit 4e9a0a6d38

View File

@ -176,18 +176,19 @@ fn write_struct(doc: &parse::Spirv, struct_id: u32, members: &[u32]) -> String {
}
// We can only implement Clone if there's no unsized member in the struct.
let impl_text = if current_rust_offset.is_some() {
format!("\nimpl Clone for {name} {{\n fn clone(&self) -> Self {{\n \
let (impl_text, derive_text) = if current_rust_offset.is_some() {
let i = format!("\nimpl Clone for {name} {{\n fn clone(&self) -> Self {{\n \
{name} {{\n{copies}\n }}\n }}\n}}\n", name = name,
copies = rust_members.iter().map(Member::copy_text).collect::<Vec<_>>().join(",\n"))
copies = rust_members.iter().map(Member::copy_text).collect::<Vec<_>>().join(",\n"));
(i, "#[derive(Copy)]")
} else {
"".to_owned()
("".to_owned(), "")
};
format!("#[repr(C)]\npub struct {name} {{\n{members}\n}} /* total_size: {t:?} */\n{impl_text}",
format!("#[repr(C)]{derive_text}\npub struct {name} {{\n{members}\n}} /* total_size: {t:?} */\n{impl_text}",
name = name,
members = rust_members.iter().map(Member::declaration_text).collect::<Vec<_>>().join(",\n"),
t = spirv_req_total_size, impl_text=impl_text)
t = spirv_req_total_size, impl_text = impl_text, derive_text = derive_text)
}
/// Returns true if a `BuiltIn` decorator is applied on a struct member.