use crate::component::*;
use crate::prelude::*;
use crate::{
EngineOrModuleTypeIndex, EntityType, ModuleInternedTypeIndex, ModuleTypes, ModuleTypesBuilder,
PrimaryMap, TypeConvert, WasmHeapType, WasmValType,
};
use anyhow::{bail, Result};
use cranelift_entity::EntityRef;
use std::collections::HashMap;
use std::hash::Hash;
use std::ops::Index;
use wasmparser::component_types::{
ComponentAnyTypeId, ComponentCoreModuleTypeId, ComponentDefinedType, ComponentDefinedTypeId,
ComponentEntityType, ComponentFuncTypeId, ComponentInstanceTypeId, ComponentTypeId,
ComponentValType, RecordType, ResourceId, TupleType, VariantType,
};
use wasmparser::names::KebabString;
use wasmparser::types::TypesRef;
use wasmparser::Validator;
use wasmtime_component_util::FlagsSize;
mod resources;
pub use resources::ResourcesBuilder;
const MAX_TYPE_DEPTH: u32 = 100;
pub struct ComponentTypesBuilder {
functions: HashMap<TypeFunc, TypeFuncIndex>,
lists: HashMap<TypeList, TypeListIndex>,
records: HashMap<TypeRecord, TypeRecordIndex>,
variants: HashMap<TypeVariant, TypeVariantIndex>,
tuples: HashMap<TypeTuple, TypeTupleIndex>,
enums: HashMap<TypeEnum, TypeEnumIndex>,
flags: HashMap<TypeFlags, TypeFlagsIndex>,
options: HashMap<TypeOption, TypeOptionIndex>,
results: HashMap<TypeResult, TypeResultIndex>,
component_types: ComponentTypes,
module_types: ModuleTypesBuilder,
type_info: TypeInformationCache,
resources: ResourcesBuilder,
}
impl<T> Index<T> for ComponentTypesBuilder
where
ModuleTypes: Index<T>,
{
type Output = <ModuleTypes as Index<T>>::Output;
fn index(&self, idx: T) -> &Self::Output {
self.module_types.index(idx)
}
}
macro_rules! intern_and_fill_flat_types {
($me:ident, $name:ident, $val:ident) => {{
if let Some(idx) = $me.$name.get(&$val) {
return *idx;
}
let idx = $me.component_types.$name.push($val.clone());
let mut info = TypeInformation::new();
info.$name($me, &$val);
let idx2 = $me.type_info.$name.push(info);
assert_eq!(idx, idx2);
$me.$name.insert($val, idx);
return idx;
}};
}
impl ComponentTypesBuilder {
pub fn new(validator: &Validator) -> Self {
Self {
module_types: ModuleTypesBuilder::new(validator),
functions: HashMap::default(),
lists: HashMap::default(),
records: HashMap::default(),
variants: HashMap::default(),
tuples: HashMap::default(),
enums: HashMap::default(),
flags: HashMap::default(),
options: HashMap::default(),
results: HashMap::default(),
component_types: ComponentTypes::default(),
type_info: TypeInformationCache::default(),
resources: ResourcesBuilder::default(),
}
}
fn export_type_def(
&mut self,
export_items: &PrimaryMap<ExportIndex, Export>,
idx: ExportIndex,
) -> TypeDef {
match &export_items[idx] {
Export::LiftedFunction { ty, .. } => TypeDef::ComponentFunc(*ty),
Export::ModuleStatic { ty, .. } | Export::ModuleImport { ty, .. } => {
TypeDef::Module(*ty)
}
Export::Instance { ty, .. } => TypeDef::ComponentInstance(*ty),
Export::Type(ty) => *ty,
}
}
pub fn finish(mut self, component: &Component) -> (ComponentTypes, TypeComponentIndex) {
let mut component_ty = TypeComponent::default();
for (_, (name, ty)) in component.import_types.iter() {
component_ty.imports.insert(name.clone(), *ty);
}
for (name, ty) in component.exports.raw_iter() {
component_ty.exports.insert(
name.clone(),
self.export_type_def(&component.export_items, *ty),
);
}
let ty = self.component_types.components.push(component_ty);
self.component_types.module_types = Some(self.module_types.finish());
(self.component_types, ty)
}
pub fn find_resource_drop_signature(&self) -> Option<ModuleInternedTypeIndex> {
self.module_types
.wasm_types()
.find(|(_, ty)| {
ty.as_func().map_or(false, |sig| {
sig.params().len() == 1
&& sig.returns().len() == 0
&& sig.params()[0] == WasmValType::I32
})
})
.map(|(i, _)| i)
}
pub fn module_types_builder(&self) -> &ModuleTypesBuilder {
&self.module_types
}
pub fn module_types_builder_mut(&mut self) -> &mut ModuleTypesBuilder {
&mut self.module_types
}
pub(super) fn component_types(&self) -> &ComponentTypes {
&self.component_types
}
pub fn num_resource_tables(&self) -> usize {
self.component_types.resource_tables.len()
}
pub fn resources_mut(&mut self) -> &mut ResourcesBuilder {
&mut self.resources
}
pub fn resources_mut_and_types(&mut self) -> (&mut ResourcesBuilder, &ComponentTypes) {
(&mut self.resources, &self.component_types)
}
pub fn convert_component_func_type(
&mut self,
types: TypesRef<'_>,
id: ComponentFuncTypeId,
) -> Result<TypeFuncIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ty = &types[id];
let param_names = ty.params.iter().map(|(name, _)| name.to_string()).collect();
let params = ty
.params
.iter()
.map(|(_name, ty)| self.valtype(types, ty))
.collect::<Result<_>>()?;
let results = ty
.results
.iter()
.map(|(_name, ty)| self.valtype(types, ty))
.collect::<Result<_>>()?;
let ty = TypeFunc {
param_names,
params: self.new_tuple_type(params),
results: self.new_tuple_type(results),
};
Ok(self.add_func_type(ty))
}
pub fn convert_component_entity_type(
&mut self,
types: TypesRef<'_>,
ty: ComponentEntityType,
) -> Result<TypeDef> {
assert_eq!(types.id(), self.module_types.validator_id());
Ok(match ty {
ComponentEntityType::Module(id) => TypeDef::Module(self.convert_module(types, id)?),
ComponentEntityType::Component(id) => {
TypeDef::Component(self.convert_component(types, id)?)
}
ComponentEntityType::Instance(id) => {
TypeDef::ComponentInstance(self.convert_instance(types, id)?)
}
ComponentEntityType::Func(id) => {
TypeDef::ComponentFunc(self.convert_component_func_type(types, id)?)
}
ComponentEntityType::Type { created, .. } => match created {
ComponentAnyTypeId::Defined(id) => {
TypeDef::Interface(self.defined_type(types, id)?)
}
ComponentAnyTypeId::Resource(id) => {
TypeDef::Resource(self.resource_id(id.resource()))
}
_ => bail!("unsupported type export"),
},
ComponentEntityType::Value(_) => bail!("values not supported"),
})
}
pub fn convert_type(&mut self, types: TypesRef<'_>, id: ComponentAnyTypeId) -> Result<TypeDef> {
assert_eq!(types.id(), self.module_types.validator_id());
Ok(match id {
ComponentAnyTypeId::Defined(id) => TypeDef::Interface(self.defined_type(types, id)?),
ComponentAnyTypeId::Component(id) => {
TypeDef::Component(self.convert_component(types, id)?)
}
ComponentAnyTypeId::Instance(id) => {
TypeDef::ComponentInstance(self.convert_instance(types, id)?)
}
ComponentAnyTypeId::Func(id) => {
TypeDef::ComponentFunc(self.convert_component_func_type(types, id)?)
}
ComponentAnyTypeId::Resource(id) => TypeDef::Resource(self.resource_id(id.resource())),
})
}
fn convert_component(
&mut self,
types: TypesRef<'_>,
id: ComponentTypeId,
) -> Result<TypeComponentIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ty = &types[id];
let mut result = TypeComponent::default();
for (name, ty) in ty.imports.iter() {
result.imports.insert(
name.clone(),
self.convert_component_entity_type(types, *ty)?,
);
}
for (name, ty) in ty.exports.iter() {
result.exports.insert(
name.clone(),
self.convert_component_entity_type(types, *ty)?,
);
}
Ok(self.component_types.components.push(result))
}
pub(crate) fn convert_instance(
&mut self,
types: TypesRef<'_>,
id: ComponentInstanceTypeId,
) -> Result<TypeComponentInstanceIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ty = &types[id];
let mut result = TypeComponentInstance::default();
for (name, ty) in ty.exports.iter() {
result.exports.insert(
name.clone(),
self.convert_component_entity_type(types, *ty)?,
);
}
Ok(self.component_types.component_instances.push(result))
}
pub(crate) fn convert_module(
&mut self,
types: TypesRef<'_>,
id: ComponentCoreModuleTypeId,
) -> Result<TypeModuleIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ty = &types[id];
let mut result = TypeModule::default();
for ((module, field), ty) in ty.imports.iter() {
result.imports.insert(
(module.clone(), field.clone()),
self.entity_type(types, ty)?,
);
}
for (name, ty) in ty.exports.iter() {
result
.exports
.insert(name.clone(), self.entity_type(types, ty)?);
}
Ok(self.component_types.modules.push(result))
}
fn entity_type(
&mut self,
types: TypesRef<'_>,
ty: &wasmparser::types::EntityType,
) -> Result<EntityType> {
use wasmparser::types::EntityType::*;
assert_eq!(types.id(), self.module_types.validator_id());
Ok(match ty {
Func(id) => EntityType::Function({
self.module_types_builder_mut()
.intern_type(types, *id)?
.into()
}),
Table(ty) => EntityType::Table(self.convert_table_type(ty)?),
Memory(ty) => EntityType::Memory((*ty).into()),
Global(ty) => EntityType::Global(self.convert_global_type(ty)),
Tag(_) => bail!("exceptions proposal not implemented"),
})
}
fn defined_type(
&mut self,
types: TypesRef<'_>,
id: ComponentDefinedTypeId,
) -> Result<InterfaceType> {
assert_eq!(types.id(), self.module_types.validator_id());
let ret = match &types[id] {
ComponentDefinedType::Primitive(ty) => ty.into(),
ComponentDefinedType::Record(e) => InterfaceType::Record(self.record_type(types, e)?),
ComponentDefinedType::Variant(e) => {
InterfaceType::Variant(self.variant_type(types, e)?)
}
ComponentDefinedType::List(e) => InterfaceType::List(self.list_type(types, e)?),
ComponentDefinedType::Tuple(e) => InterfaceType::Tuple(self.tuple_type(types, e)?),
ComponentDefinedType::Flags(e) => InterfaceType::Flags(self.flags_type(e)),
ComponentDefinedType::Enum(e) => InterfaceType::Enum(self.enum_type(e)),
ComponentDefinedType::Option(e) => InterfaceType::Option(self.option_type(types, e)?),
ComponentDefinedType::Result { ok, err } => {
InterfaceType::Result(self.result_type(types, ok, err)?)
}
ComponentDefinedType::Own(r) => InterfaceType::Own(self.resource_id(r.resource())),
ComponentDefinedType::Borrow(r) => {
InterfaceType::Borrow(self.resource_id(r.resource()))
}
};
let info = self.type_information(&ret);
if info.depth > MAX_TYPE_DEPTH {
bail!("type nesting is too deep");
}
Ok(ret)
}
fn valtype(&mut self, types: TypesRef<'_>, ty: &ComponentValType) -> Result<InterfaceType> {
assert_eq!(types.id(), self.module_types.validator_id());
match ty {
ComponentValType::Primitive(p) => Ok(p.into()),
ComponentValType::Type(id) => self.defined_type(types, *id),
}
}
fn record_type(&mut self, types: TypesRef<'_>, ty: &RecordType) -> Result<TypeRecordIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let fields = ty
.fields
.iter()
.map(|(name, ty)| {
Ok(RecordField {
name: name.to_string(),
ty: self.valtype(types, ty)?,
})
})
.collect::<Result<Box<[_]>>>()?;
let abi = CanonicalAbiInfo::record(
fields
.iter()
.map(|field| self.component_types.canonical_abi(&field.ty)),
);
Ok(self.add_record_type(TypeRecord { fields, abi }))
}
fn variant_type(&mut self, types: TypesRef<'_>, ty: &VariantType) -> Result<TypeVariantIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let cases = ty
.cases
.iter()
.map(|(name, case)| {
if case.refines.is_some() {
bail!("refines is not supported at this time");
}
Ok((
name.to_string(),
match &case.ty.as_ref() {
Some(ty) => Some(self.valtype(types, ty)?),
None => None,
},
))
})
.collect::<Result<IndexMap<_, _>>>()?;
let (info, abi) = VariantInfo::new(
cases
.iter()
.map(|(_, c)| c.as_ref().map(|ty| self.component_types.canonical_abi(ty))),
);
Ok(self.add_variant_type(TypeVariant { cases, abi, info }))
}
fn tuple_type(&mut self, types: TypesRef<'_>, ty: &TupleType) -> Result<TypeTupleIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let types = ty
.types
.iter()
.map(|ty| self.valtype(types, ty))
.collect::<Result<Box<[_]>>>()?;
Ok(self.new_tuple_type(types))
}
fn new_tuple_type(&mut self, types: Box<[InterfaceType]>) -> TypeTupleIndex {
let abi = CanonicalAbiInfo::record(
types
.iter()
.map(|ty| self.component_types.canonical_abi(ty)),
);
self.add_tuple_type(TypeTuple { types, abi })
}
fn flags_type(&mut self, flags: &IndexSet<KebabString>) -> TypeFlagsIndex {
let flags = TypeFlags {
names: flags.iter().map(|s| s.to_string()).collect(),
abi: CanonicalAbiInfo::flags(flags.len()),
};
self.add_flags_type(flags)
}
fn enum_type(&mut self, variants: &IndexSet<KebabString>) -> TypeEnumIndex {
let names = variants
.iter()
.map(|s| s.to_string())
.collect::<IndexSet<_>>();
let (info, abi) = VariantInfo::new(names.iter().map(|_| None));
self.add_enum_type(TypeEnum { names, abi, info })
}
fn option_type(
&mut self,
types: TypesRef<'_>,
ty: &ComponentValType,
) -> Result<TypeOptionIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ty = self.valtype(types, ty)?;
let (info, abi) = VariantInfo::new([None, Some(self.component_types.canonical_abi(&ty))]);
Ok(self.add_option_type(TypeOption { ty, abi, info }))
}
fn result_type(
&mut self,
types: TypesRef<'_>,
ok: &Option<ComponentValType>,
err: &Option<ComponentValType>,
) -> Result<TypeResultIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let ok = match ok {
Some(ty) => Some(self.valtype(types, ty)?),
None => None,
};
let err = match err {
Some(ty) => Some(self.valtype(types, ty)?),
None => None,
};
let (info, abi) = VariantInfo::new([
ok.as_ref().map(|t| self.component_types.canonical_abi(t)),
err.as_ref().map(|t| self.component_types.canonical_abi(t)),
]);
Ok(self.add_result_type(TypeResult { ok, err, abi, info }))
}
fn list_type(&mut self, types: TypesRef<'_>, ty: &ComponentValType) -> Result<TypeListIndex> {
assert_eq!(types.id(), self.module_types.validator_id());
let element = self.valtype(types, ty)?;
Ok(self.add_list_type(TypeList { element }))
}
pub fn resource_id(&mut self, id: ResourceId) -> TypeResourceTableIndex {
self.resources.convert(id, &mut self.component_types)
}
pub fn add_func_type(&mut self, ty: TypeFunc) -> TypeFuncIndex {
intern(&mut self.functions, &mut self.component_types.functions, ty)
}
pub fn add_record_type(&mut self, ty: TypeRecord) -> TypeRecordIndex {
intern_and_fill_flat_types!(self, records, ty)
}
pub fn add_flags_type(&mut self, ty: TypeFlags) -> TypeFlagsIndex {
intern_and_fill_flat_types!(self, flags, ty)
}
pub fn add_tuple_type(&mut self, ty: TypeTuple) -> TypeTupleIndex {
intern_and_fill_flat_types!(self, tuples, ty)
}
pub fn add_variant_type(&mut self, ty: TypeVariant) -> TypeVariantIndex {
intern_and_fill_flat_types!(self, variants, ty)
}
pub fn add_enum_type(&mut self, ty: TypeEnum) -> TypeEnumIndex {
intern_and_fill_flat_types!(self, enums, ty)
}
pub fn add_option_type(&mut self, ty: TypeOption) -> TypeOptionIndex {
intern_and_fill_flat_types!(self, options, ty)
}
pub fn add_result_type(&mut self, ty: TypeResult) -> TypeResultIndex {
intern_and_fill_flat_types!(self, results, ty)
}
pub fn add_list_type(&mut self, ty: TypeList) -> TypeListIndex {
intern_and_fill_flat_types!(self, lists, ty)
}
pub fn canonical_abi(&self, ty: &InterfaceType) -> &CanonicalAbiInfo {
self.component_types.canonical_abi(ty)
}
pub fn flat_types(&self, ty: &InterfaceType) -> Option<FlatTypes<'_>> {
self.type_information(ty).flat.as_flat_types()
}
pub fn ty_contains_borrow_resource(&self, ty: &InterfaceType) -> bool {
self.type_information(ty).has_borrow
}
fn type_information(&self, ty: &InterfaceType) -> &TypeInformation {
match ty {
InterfaceType::U8
| InterfaceType::S8
| InterfaceType::Bool
| InterfaceType::U16
| InterfaceType::S16
| InterfaceType::U32
| InterfaceType::S32
| InterfaceType::Char
| InterfaceType::Own(_) => {
static INFO: TypeInformation = TypeInformation::primitive(FlatType::I32);
&INFO
}
InterfaceType::Borrow(_) => {
static INFO: TypeInformation = {
let mut info = TypeInformation::primitive(FlatType::I32);
info.has_borrow = true;
info
};
&INFO
}
InterfaceType::U64 | InterfaceType::S64 => {
static INFO: TypeInformation = TypeInformation::primitive(FlatType::I64);
&INFO
}
InterfaceType::Float32 => {
static INFO: TypeInformation = TypeInformation::primitive(FlatType::F32);
&INFO
}
InterfaceType::Float64 => {
static INFO: TypeInformation = TypeInformation::primitive(FlatType::F64);
&INFO
}
InterfaceType::String => {
static INFO: TypeInformation = TypeInformation::string();
&INFO
}
InterfaceType::List(i) => &self.type_info.lists[*i],
InterfaceType::Record(i) => &self.type_info.records[*i],
InterfaceType::Variant(i) => &self.type_info.variants[*i],
InterfaceType::Tuple(i) => &self.type_info.tuples[*i],
InterfaceType::Flags(i) => &self.type_info.flags[*i],
InterfaceType::Enum(i) => &self.type_info.enums[*i],
InterfaceType::Option(i) => &self.type_info.options[*i],
InterfaceType::Result(i) => &self.type_info.results[*i],
}
}
}
impl TypeConvert for ComponentTypesBuilder {
fn lookup_heap_type(&self, _index: wasmparser::UnpackedIndex) -> WasmHeapType {
panic!("heap types are not supported yet")
}
fn lookup_type_index(&self, _index: wasmparser::UnpackedIndex) -> EngineOrModuleTypeIndex {
panic!("typed references are not supported yet")
}
}
fn intern<T, U>(map: &mut HashMap<T, U>, list: &mut PrimaryMap<U, T>, item: T) -> U
where
T: Hash + Clone + Eq,
U: Copy + EntityRef,
{
if let Some(idx) = map.get(&item) {
return *idx;
}
let idx = list.push(item.clone());
map.insert(item, idx);
return idx;
}
struct FlatTypesStorage {
memory32: [FlatType; MAX_FLAT_TYPES],
memory64: [FlatType; MAX_FLAT_TYPES],
len: u8,
}
impl FlatTypesStorage {
const fn new() -> FlatTypesStorage {
FlatTypesStorage {
memory32: [FlatType::I32; MAX_FLAT_TYPES],
memory64: [FlatType::I32; MAX_FLAT_TYPES],
len: 0,
}
}
fn as_flat_types(&self) -> Option<FlatTypes<'_>> {
let len = usize::from(self.len);
if len > MAX_FLAT_TYPES {
assert_eq!(len, MAX_FLAT_TYPES + 1);
None
} else {
Some(FlatTypes {
memory32: &self.memory32[..len],
memory64: &self.memory64[..len],
})
}
}
fn push(&mut self, t32: FlatType, t64: FlatType) -> bool {
let len = usize::from(self.len);
if len < MAX_FLAT_TYPES {
self.memory32[len] = t32;
self.memory64[len] = t64;
self.len += 1;
true
} else {
if len == MAX_FLAT_TYPES {
self.len += 1;
}
false
}
}
}
impl FlatType {
fn join(&mut self, other: FlatType) {
if *self == other {
return;
}
*self = match (*self, other) {
(FlatType::I32, FlatType::F32) | (FlatType::F32, FlatType::I32) => FlatType::I32,
_ => FlatType::I64,
};
}
}
#[derive(Default)]
struct TypeInformationCache {
records: PrimaryMap<TypeRecordIndex, TypeInformation>,
variants: PrimaryMap<TypeVariantIndex, TypeInformation>,
tuples: PrimaryMap<TypeTupleIndex, TypeInformation>,
enums: PrimaryMap<TypeEnumIndex, TypeInformation>,
flags: PrimaryMap<TypeFlagsIndex, TypeInformation>,
options: PrimaryMap<TypeOptionIndex, TypeInformation>,
results: PrimaryMap<TypeResultIndex, TypeInformation>,
lists: PrimaryMap<TypeListIndex, TypeInformation>,
}
struct TypeInformation {
depth: u32,
flat: FlatTypesStorage,
has_borrow: bool,
}
impl TypeInformation {
const fn new() -> TypeInformation {
TypeInformation {
depth: 0,
flat: FlatTypesStorage::new(),
has_borrow: false,
}
}
const fn primitive(flat: FlatType) -> TypeInformation {
let mut info = TypeInformation::new();
info.depth = 1;
info.flat.memory32[0] = flat;
info.flat.memory64[0] = flat;
info.flat.len = 1;
info
}
const fn string() -> TypeInformation {
let mut info = TypeInformation::new();
info.depth = 1;
info.flat.memory32[0] = FlatType::I32;
info.flat.memory32[1] = FlatType::I32;
info.flat.memory64[0] = FlatType::I64;
info.flat.memory64[1] = FlatType::I64;
info.flat.len = 2;
info
}
fn build_record<'a>(&mut self, types: impl Iterator<Item = &'a TypeInformation>) {
self.depth = 1;
for info in types {
self.depth = self.depth.max(1 + info.depth);
self.has_borrow = self.has_borrow || info.has_borrow;
match info.flat.as_flat_types() {
Some(types) => {
for (t32, t64) in types.memory32.iter().zip(types.memory64) {
if !self.flat.push(*t32, *t64) {
break;
}
}
}
None => {
self.flat.len = u8::try_from(MAX_FLAT_TYPES + 1).unwrap();
}
}
}
}
fn build_variant<'a, I>(&mut self, cases: I)
where
I: IntoIterator<Item = Option<&'a TypeInformation>>,
{
let cases = cases.into_iter();
self.flat.push(FlatType::I32, FlatType::I32);
self.depth = 1;
for info in cases {
let info = match info {
Some(info) => info,
None => continue,
};
self.depth = self.depth.max(1 + info.depth);
self.has_borrow = self.has_borrow || info.has_borrow;
if usize::from(self.flat.len) > MAX_FLAT_TYPES {
continue;
}
let types = match info.flat.as_flat_types() {
Some(types) => types,
None => {
self.flat.len = u8::try_from(MAX_FLAT_TYPES + 1).unwrap();
continue;
}
};
if types.memory32.len() >= MAX_FLAT_TYPES {
self.flat.len = u8::try_from(MAX_FLAT_TYPES + 1).unwrap();
continue;
}
let dst = self
.flat
.memory32
.iter_mut()
.zip(&mut self.flat.memory64)
.skip(1);
for (i, ((t32, t64), (dst32, dst64))) in types
.memory32
.iter()
.zip(types.memory64)
.zip(dst)
.enumerate()
{
if i + 1 < usize::from(self.flat.len) {
dst32.join(*t32);
dst64.join(*t64);
} else {
self.flat.len += 1;
*dst32 = *t32;
*dst64 = *t64;
}
}
}
}
fn records(&mut self, types: &ComponentTypesBuilder, ty: &TypeRecord) {
self.build_record(ty.fields.iter().map(|f| types.type_information(&f.ty)));
}
fn tuples(&mut self, types: &ComponentTypesBuilder, ty: &TypeTuple) {
self.build_record(ty.types.iter().map(|t| types.type_information(t)));
}
fn enums(&mut self, _types: &ComponentTypesBuilder, _ty: &TypeEnum) {
self.depth = 1;
self.flat.push(FlatType::I32, FlatType::I32);
}
fn flags(&mut self, _types: &ComponentTypesBuilder, ty: &TypeFlags) {
self.depth = 1;
match FlagsSize::from_count(ty.names.len()) {
FlagsSize::Size0 => {}
FlagsSize::Size1 | FlagsSize::Size2 => {
self.flat.push(FlatType::I32, FlatType::I32);
}
FlagsSize::Size4Plus(n) => {
for _ in 0..n {
self.flat.push(FlatType::I32, FlatType::I32);
}
}
}
}
fn variants(&mut self, types: &ComponentTypesBuilder, ty: &TypeVariant) {
self.build_variant(
ty.cases
.iter()
.map(|(_, c)| c.as_ref().map(|ty| types.type_information(ty))),
)
}
fn results(&mut self, types: &ComponentTypesBuilder, ty: &TypeResult) {
self.build_variant([
ty.ok.as_ref().map(|ty| types.type_information(ty)),
ty.err.as_ref().map(|ty| types.type_information(ty)),
])
}
fn options(&mut self, types: &ComponentTypesBuilder, ty: &TypeOption) {
self.build_variant([None, Some(types.type_information(&ty.ty))]);
}
fn lists(&mut self, types: &ComponentTypesBuilder, ty: &TypeList) {
*self = TypeInformation::string();
let info = types.type_information(&ty.element);
self.depth += info.depth;
self.has_borrow = info.has_borrow;
}
}