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mod error;
mod flags;
mod handle;
mod record;
mod variant;
use crate::codegen_settings::ErrorType;
use crate::lifetimes::LifetimeExt;
use crate::names;
use proc_macro2::TokenStream;
use quote::quote;
pub fn define_datatype(namedtype: &witx::NamedType, error: Option<&ErrorType>) -> TokenStream {
match &namedtype.tref {
witx::TypeRef::Name(alias_to) => define_alias(&namedtype.name, &alias_to),
witx::TypeRef::Value(v) => match &**v {
witx::Type::Record(r) => match r.bitflags_repr() {
Some(repr) => flags::define_flags(&namedtype.name, repr, &r),
None => record::define_struct(&namedtype.name, &r),
},
witx::Type::Variant(v) => match error {
Some(ErrorType::Generated(error)) => {
let d = variant::define_variant(&namedtype.name, &v, true);
let e = error::define_error(&namedtype.name, &v, error);
quote!( #d #e )
}
_ => variant::define_variant(&namedtype.name, &v, false),
},
witx::Type::Handle(h) => handle::define_handle(&namedtype.name, &h),
witx::Type::Builtin(b) => define_builtin(&namedtype.name, *b),
witx::Type::Pointer(p) => {
define_witx_pointer(&namedtype.name, quote!(wiggle::GuestPtr), p)
}
witx::Type::ConstPointer(p) => {
define_witx_pointer(&namedtype.name, quote!(wiggle::GuestPtr), p)
}
witx::Type::List(arr) => define_witx_list(&namedtype.name, &arr),
},
}
}
fn define_alias(name: &witx::Id, to: &witx::NamedType) -> TokenStream {
let ident = names::type_(name);
let rhs = names::type_(&to.name);
if to.tref.needs_lifetime() {
quote!(pub type #ident<'a> = #rhs<'a>;)
} else {
quote!(pub type #ident = #rhs;)
}
}
fn define_builtin(name: &witx::Id, builtin: witx::BuiltinType) -> TokenStream {
let ident = names::type_(name);
let built = names::builtin_type(builtin);
quote!(pub type #ident = #built;)
}
fn define_witx_pointer(
name: &witx::Id,
pointer_type: TokenStream,
pointee: &witx::TypeRef,
) -> TokenStream {
let ident = names::type_(name);
let pointee_type = names::type_ref(pointee, quote!('a));
quote!(pub type #ident<'a> = #pointer_type<'a, #pointee_type>;)
}
fn define_witx_list(name: &witx::Id, arr_raw: &witx::TypeRef) -> TokenStream {
let ident = names::type_(name);
let pointee_type = names::type_ref(arr_raw, quote!('a));
quote!(pub type #ident<'a> = wiggle::GuestPtr<'a, [#pointee_type]>;)
}
pub fn int_repr_tokens(int_repr: witx::IntRepr) -> TokenStream {
match int_repr {
witx::IntRepr::U8 => quote!(u8),
witx::IntRepr::U16 => quote!(u16),
witx::IntRepr::U32 => quote!(u32),
witx::IntRepr::U64 => quote!(u64),
}
}
pub trait WiggleType {
fn impls_display(&self) -> bool;
}
impl WiggleType for witx::TypeRef {
fn impls_display(&self) -> bool {
match self {
witx::TypeRef::Name(alias_to) => (&*alias_to).impls_display(),
witx::TypeRef::Value(v) => (&*v).impls_display(),
}
}
}
impl WiggleType for witx::NamedType {
fn impls_display(&self) -> bool {
self.tref.impls_display()
}
}
impl WiggleType for witx::Type {
fn impls_display(&self) -> bool {
match self {
witx::Type::Record(x) => x.impls_display(),
witx::Type::Variant(x) => x.impls_display(),
witx::Type::Handle(x) => x.impls_display(),
witx::Type::Builtin(x) => x.impls_display(),
witx::Type::Pointer { .. }
| witx::Type::ConstPointer { .. }
| witx::Type::List { .. } => false,
}
}
}
impl WiggleType for witx::BuiltinType {
fn impls_display(&self) -> bool {
true
}
}
impl WiggleType for witx::InterfaceFuncParam {
fn impls_display(&self) -> bool {
self.tref.impls_display()
}
}