use super::*;
use wasmparser::types::KebabStr;
impl Component {
pub fn to_bytes(&self) -> Vec<u8> {
self.encoded().finish()
}
fn encoded(&self) -> wasm_encoder::Component {
let mut component = wasm_encoder::Component::new();
for section in &self.sections {
section.encode(&mut component);
}
component
}
}
impl Section {
fn encode(&self, component: &mut wasm_encoder::Component) {
match self {
Self::Custom(sec) => sec.encode(component),
Self::CoreModule(module) => {
let bytes = module.to_bytes();
component.section(&wasm_encoder::RawSection {
id: wasm_encoder::ComponentSectionId::CoreModule as u8,
data: &bytes,
});
}
Self::CoreInstance(_) => todo!(),
Self::CoreType(sec) => sec.encode(component),
Self::Component(comp) => {
let bytes = comp.to_bytes();
component.section(&wasm_encoder::RawSection {
id: wasm_encoder::ComponentSectionId::Component as u8,
data: &bytes,
});
}
Self::Instance(_) => todo!(),
Self::Alias(_) => todo!(),
Self::Type(sec) => sec.encode(component),
Self::Canonical(sec) => sec.encode(component),
Self::Start(_) => todo!(),
Self::Import(sec) => sec.encode(component),
Self::Export(_) => todo!(),
}
}
}
impl CustomSection {
fn encode(&self, component: &mut wasm_encoder::Component) {
component.section(&wasm_encoder::CustomSection {
name: &self.name,
data: &self.data,
});
}
}
impl TypeSection {
fn encode(&self, component: &mut wasm_encoder::Component) {
let mut sec = wasm_encoder::ComponentTypeSection::new();
for ty in &self.types {
ty.encode(sec.ty());
}
component.section(&sec);
}
}
impl ImportSection {
fn encode(&self, component: &mut wasm_encoder::Component) {
let mut sec = wasm_encoder::ComponentImportSection::new();
for imp in &self.imports {
sec.import(&imp.name, imp.url.as_deref().unwrap_or(""), imp.ty);
}
component.section(&sec);
}
}
impl CanonicalSection {
fn encode(&self, component: &mut wasm_encoder::Component) {
let mut sec = wasm_encoder::CanonicalFunctionSection::new();
for func in &self.funcs {
match func {
Func::CanonLift {
func_ty,
options,
core_func_index,
} => {
let options = translate_canon_opt(options);
sec.lift(*core_func_index, *func_ty, options);
}
Func::CanonLower {
options,
func_index,
} => {
let options = translate_canon_opt(options);
sec.lower(*func_index, options);
}
}
}
component.section(&sec);
}
}
impl CoreTypeSection {
fn encode(&self, component: &mut wasm_encoder::Component) {
let mut sec = wasm_encoder::CoreTypeSection::new();
for ty in &self.types {
ty.encode(sec.ty());
}
component.section(&sec);
}
}
impl CoreType {
fn encode(&self, enc: wasm_encoder::CoreTypeEncoder<'_>) {
match self {
Self::Func(ty) => {
enc.function(ty.params.iter().copied(), ty.results.iter().copied());
}
Self::Module(mod_ty) => {
let mut enc_mod_ty = wasm_encoder::ModuleType::new();
for def in &mod_ty.defs {
match def {
ModuleTypeDef::TypeDef(crate::core::Type::Func(func_ty)) => {
enc_mod_ty.ty().function(
func_ty.params.iter().copied(),
func_ty.results.iter().copied(),
);
}
ModuleTypeDef::OuterAlias { count, i, kind } => match kind {
CoreOuterAliasKind::Type(_) => {
enc_mod_ty.alias_outer_core_type(*count, *i);
}
},
ModuleTypeDef::Import(imp) => {
enc_mod_ty.import(
&imp.module,
&imp.field,
crate::core::encode::translate_entity_type(&imp.entity_type),
);
}
ModuleTypeDef::Export(name, ty) => {
enc_mod_ty.export(name, crate::core::encode::translate_entity_type(ty));
}
}
}
enc.module(&enc_mod_ty);
}
}
}
}
impl Type {
fn encode(&self, enc: wasm_encoder::ComponentTypeEncoder<'_>) {
match self {
Self::Defined(ty) => {
ty.encode(enc.defined_type());
}
Self::Func(func_ty) => {
let mut f = enc.function();
f.params(func_ty.params.iter().map(|(name, ty)| (name.as_str(), *ty)));
if let Some(ty) = func_ty.unnamed_result_ty() {
f.result(ty);
} else {
f.results(
func_ty.results.iter().map(|(name, ty)| {
(name.as_deref().map(KebabStr::as_str).unwrap(), *ty)
}),
);
}
}
Self::Component(comp_ty) => {
let mut enc_comp_ty = wasm_encoder::ComponentType::new();
for def in &comp_ty.defs {
match def {
ComponentTypeDef::Import(imp) => {
enc_comp_ty.import(&imp.name, imp.url.as_deref().unwrap_or(""), imp.ty);
}
ComponentTypeDef::CoreType(ty) => {
ty.encode(enc_comp_ty.core_type());
}
ComponentTypeDef::Type(ty) => {
ty.encode(enc_comp_ty.ty());
}
ComponentTypeDef::Export { name, url, ty } => {
enc_comp_ty.export(name, url.as_deref().unwrap_or(""), *ty);
}
ComponentTypeDef::Alias(Alias::Outer {
count,
i,
kind: OuterAliasKind::Type(_),
}) => {
enc_comp_ty.alias_outer_type(*count, *i);
}
ComponentTypeDef::Alias(Alias::Outer {
count,
i,
kind: OuterAliasKind::CoreType(_),
}) => {
enc_comp_ty.alias_outer_core_type(*count, *i);
}
ComponentTypeDef::Alias(_) => unreachable!(),
}
}
enc.component(&enc_comp_ty);
}
Self::Instance(inst_ty) => {
let mut enc_inst_ty = wasm_encoder::InstanceType::new();
for def in &inst_ty.defs {
match def {
InstanceTypeDecl::CoreType(ty) => {
ty.encode(enc_inst_ty.core_type());
}
InstanceTypeDecl::Type(ty) => {
ty.encode(enc_inst_ty.ty());
}
InstanceTypeDecl::Export { name, url, ty } => {
enc_inst_ty.export(name, url.as_deref().unwrap_or(""), *ty);
}
InstanceTypeDecl::Alias(Alias::Outer {
count,
i,
kind: OuterAliasKind::Type(_),
}) => {
enc_inst_ty.alias_outer_type(*count, *i);
}
InstanceTypeDecl::Alias(Alias::Outer {
count,
i,
kind: OuterAliasKind::CoreType(_),
}) => {
enc_inst_ty.alias_outer_core_type(*count, *i);
}
InstanceTypeDecl::Alias(_) => unreachable!(),
}
}
enc.instance(&enc_inst_ty);
}
}
}
}
impl DefinedType {
fn encode(&self, enc: wasm_encoder::ComponentDefinedTypeEncoder<'_>) {
match self {
Self::Primitive(ty) => enc.primitive(*ty),
Self::Record(ty) => {
enc.record(ty.fields.iter().map(|(name, ty)| (name.as_str(), *ty)));
}
Self::Variant(ty) => {
enc.variant(
ty.cases
.iter()
.map(|(name, ty, refines)| (name.as_str(), *ty, *refines)),
);
}
Self::List(ty) => {
enc.list(ty.elem_ty);
}
Self::Tuple(ty) => {
enc.tuple(ty.fields.iter().copied());
}
Self::Flags(ty) => {
enc.flags(ty.fields.iter().map(|f| f.as_str()));
}
Self::Enum(ty) => {
enc.enum_type(ty.variants.iter().map(|v| v.as_str()));
}
Self::Union(ty) => {
enc.union(ty.variants.iter().copied());
}
Self::Option(ty) => {
enc.option(ty.inner_ty);
}
Self::Result(ty) => {
enc.result(ty.ok_ty, ty.err_ty);
}
}
}
}
fn translate_canon_opt(options: &[CanonOpt]) -> Vec<wasm_encoder::CanonicalOption> {
options
.iter()
.map(|o| match o {
CanonOpt::StringUtf8 => wasm_encoder::CanonicalOption::UTF8,
CanonOpt::StringUtf16 => wasm_encoder::CanonicalOption::UTF16,
CanonOpt::StringLatin1Utf16 => wasm_encoder::CanonicalOption::CompactUTF16,
CanonOpt::Memory(idx) => wasm_encoder::CanonicalOption::Memory(*idx),
CanonOpt::Realloc(idx) => wasm_encoder::CanonicalOption::Realloc(*idx),
CanonOpt::PostReturn(idx) => wasm_encoder::CanonicalOption::PostReturn(*idx),
})
.collect()
}