Sha256: 4b54f556048732580daf5b238963277c61096bc8c2b7bd012d0c2a6771b4cddb
Contents?: true
Size: 1.93 KB
Versions: 38
Compression:
Stored size: 1.93 KB
Contents
use proc_macro2::TokenStream;
use quote::quote;
pub trait LifetimeExt {
fn is_transparent(&self) -> bool;
fn needs_lifetime(&self) -> bool;
}
impl LifetimeExt for witx::TypeRef {
fn is_transparent(&self) -> bool {
self.type_().is_transparent()
}
fn needs_lifetime(&self) -> bool {
self.type_().needs_lifetime()
}
}
impl LifetimeExt for witx::Type {
fn is_transparent(&self) -> bool {
match self {
witx::Type::Builtin(b) => b.is_transparent(),
witx::Type::Record(s) => s.is_transparent(),
witx::Type::Handle { .. } => true,
witx::Type::Variant { .. }
| witx::Type::Pointer { .. }
| witx::Type::ConstPointer { .. }
| witx::Type::List { .. } => false,
}
}
fn needs_lifetime(&self) -> bool {
match self {
witx::Type::Builtin(b) => b.needs_lifetime(),
witx::Type::Record(s) => s.needs_lifetime(),
witx::Type::Variant(u) => u.needs_lifetime(),
witx::Type::Handle { .. } => false,
witx::Type::Pointer { .. }
| witx::Type::ConstPointer { .. }
| witx::Type::List { .. } => true,
}
}
}
impl LifetimeExt for witx::BuiltinType {
fn is_transparent(&self) -> bool {
true
}
fn needs_lifetime(&self) -> bool {
false
}
}
impl LifetimeExt for witx::RecordDatatype {
fn is_transparent(&self) -> bool {
self.members.iter().all(|m| m.tref.is_transparent())
}
fn needs_lifetime(&self) -> bool {
self.members.iter().any(|m| m.tref.needs_lifetime())
}
}
impl LifetimeExt for witx::Variant {
fn is_transparent(&self) -> bool {
false
}
fn needs_lifetime(&self) -> bool {
self.cases
.iter()
.any(|m| m.tref.as_ref().map(|t| t.needs_lifetime()).unwrap_or(false))
}
}
pub fn anon_lifetime() -> TokenStream {
quote!('_)
}
Version data entries
38 entries across 38 versions & 1 rubygems