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Upgrade wasm-tools crates, namely the component model (#4715)

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* Upgrade wasm-tools crates, namely the component model

This commit pulls in the latest versions of all of the `wasm-tools`
family of crates. There were two major changes that happened in
`wasm-tools` in the meantime:

* bytecodealliance/wasm-tools#697 - this commit introduced a new API for
  more efficiently reading binary operators from a wasm binary. The old
  `Operator`-based reading was left in place, however, and continues to
  be what Wasmtime uses. I hope to update Wasmtime in a future PR to use
  this new API, but for now the biggest change is...

* bytecodealliance/wasm-tools#703 - this commit was a major update to
  the component model AST. This commit almost entirely deals with the
  fallout of this change.

The changes made to the component model were:

1. The `unit` type no longer exists. This was generally a simple change
   where the `Unit` case in a few different locations were all removed.
2. The `expected` type was renamed to `result`. This similarly was
   relatively lightweight and mostly just a renaming on the surface. I
   took this opportunity to rename `val::Result` to `val::ResultVal` and
   `types::Result` to `types::ResultType` to avoid clashing with the
   standard library types. The `Option`-based types were handled with
   this as well.
3. The payload type of `variant` and `result` types are now optional.
   This affected many locations that calculate flat type
   representations, ABI information, etc. The `#[derive(ComponentType)]`
   macro now specifically handles Rust-defined `enum` types which have
   no payload to the equivalent in the component model.
4. Functions can now return multiple parameters. This changed the
   signature of invoking component functions because the return value is
   now bound by `ComponentNamedList` (renamed from `ComponentParams`).
   This had a large effect in the tests, fuzz test case generation, etc.
5. Function types with 2-or-more parameters/results must uniquely name
   all parameters/results. This mostly affected the text format used
   throughout the tests.

I haven't added specifically new tests for multi-return but I changed a
number of tests to use it. Additionally I've updated the fuzzers to all
exercise multi-return as well so I think we should get some good
coverage with that.

* Update version numbers

* Use crates.io
This commit is contained in:
Alex Crichton
2022-08-17 11:17:34 -05:00
committed by GitHub
parent 3629bbbd55
commit 57dca934ad
46 changed files with 1425 additions and 1133 deletions
Download Patch File Download Diff File Expand all files Collapse all files

204
crates/misc/component-fuzz-util/src/lib.rs
View File

@@ -17,7 +17,7 @@ use wasmtime_component_util::{DiscriminantSize, FlagsSize, REALLOC_AND_FREE};
const MAX_FLAT_PARAMS: usize = 16;
const MAX_FLAT_RESULTS: usize = 1;
const MAX_ARITY: usize = 5;
const MAX_ARITY: u32 = 5;
/// The name of the imported host function which the generated component will call
pub const IMPORT_FUNCTION: &str = "echo";
@@ -57,7 +57,7 @@ impl fmt::Display for CoreType {
}
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub struct UsizeInRange<const L: usize, const H: usize>(usize);
impl<const L: usize, const H: usize> UsizeInRange<L, H> {
@@ -74,7 +74,7 @@ impl<'a, const L: usize, const H: usize> Arbitrary<'a> for UsizeInRange<L, H> {
/// Wraps a `Box<[T]>` and provides an `Arbitrary` implementation that always generates slices of length less than
/// or equal to the longest tuple for which Wasmtime generates a `ComponentType` impl
#[derive(Debug)]
#[derive(Debug, Clone)]
pub struct VecInRange<T, const L: u32, const H: u32>(Vec<T>);
impl<'a, T: Arbitrary<'a>, const L: u32, const H: u32> Arbitrary<'a> for VecInRange<T, L, H> {
@@ -98,9 +98,8 @@ impl<T, const L: u32, const H: u32> Deref for VecInRange<T, L, H> {
/// Represents a component model interface type
#[allow(missing_docs)]
#[derive(Arbitrary, Debug)]
#[derive(Arbitrary, Debug, Clone)]
pub enum Type {
Unit,
Bool,
S8,
U8,
@@ -129,12 +128,15 @@ pub enum Type {
// Like records, allow a good number of variants, but variants require at
// least one case.
Variant(VecInRange<Type, 1, 200>),
Variant(VecInRange<Option<Type>, 1, 200>),
Enum(UsizeInRange<1, 257>),
Union(VecInRange<Type, 1, 200>),
Option(Box<Type>),
Expected { ok: Box<Type>, err: Box<Type> },
Result {
ok: Option<Box<Type>>,
err: Option<Box<Type>>,
},
// Generate 0 flags all the way up to 65 flags which exercises the 0 to
// 3 x u32 cases.
@@ -147,10 +149,14 @@ fn lower_record<'a>(types: impl Iterator<Item = &'a Type>, vec: &mut Vec<CoreTyp
}
}
fn lower_variant<'a>(types: impl Iterator<Item = &'a Type>, vec: &mut Vec<CoreType>) {
fn lower_variant<'a>(types: impl Iterator<Item = Option<&'a Type>>, vec: &mut Vec<CoreType>) {
vec.push(CoreType::I32);
let offset = vec.len();
for ty in types {
let ty = match ty {
Some(ty) => ty,
None => continue,
};
for (index, ty) in ty.lowered().iter().enumerate() {
let index = offset + index;
if index < vec.len() {
@@ -184,7 +190,6 @@ impl Type {
fn lower(&self, vec: &mut Vec<CoreType>) {
match self {
Type::Unit => (),
Type::Bool
| Type::U8
| Type::S8
@@ -203,9 +208,12 @@ impl Type {
}
Type::Record(types) => lower_record(types.iter(), vec),
Type::Tuple(types) => lower_record(types.0.iter(), vec),
Type::Variant(types) | Type::Union(types) => lower_variant(types.0.iter(), vec),
Type::Option(ty) => lower_variant([&Type::Unit, ty].into_iter(), vec),
Type::Expected { ok, err } => lower_variant([ok.deref(), err].into_iter(), vec),
Type::Variant(types) => lower_variant(types.0.iter().map(|t| t.as_ref()), vec),
Type::Union(types) => lower_variant(types.0.iter().map(Some), vec),
Type::Option(ty) => lower_variant([None, Some(&**ty)].into_iter(), vec),
Type::Result { ok, err } => {
lower_variant([ok.as_deref(), err.as_deref()].into_iter(), vec)
}
Type::Flags(count) => {
vec.extend(iter::repeat(CoreType::I32).take(u32_count_from_flag_count(count.0)))
}
@@ -214,11 +222,6 @@ impl Type {
fn size_and_alignment(&self) -> SizeAndAlignment {
match self {
Type::Unit => SizeAndAlignment {
size: 0,
alignment: 1,
},
Type::Bool | Type::S8 | Type::U8 => SizeAndAlignment {
size: 1,
alignment: 1,
@@ -248,13 +251,16 @@ impl Type {
Type::Tuple(types) => record_size_and_alignment(types.0.iter()),
Type::Variant(types) | Type::Union(types) => variant_size_and_alignment(types.0.iter()),
Type::Variant(types) => variant_size_and_alignment(types.0.iter().map(|t| t.as_ref())),
Type::Union(types) => variant_size_and_alignment(types.0.iter().map(Some)),
Type::Enum(count) => variant_size_and_alignment((0..count.0).map(|_| &Type::Unit)),
Type::Enum(count) => variant_size_and_alignment((0..count.0).map(|_| None)),
Type::Option(ty) => variant_size_and_alignment([&Type::Unit, ty].into_iter()),
Type::Option(ty) => variant_size_and_alignment([None, Some(&**ty)].into_iter()),
Type::Expected { ok, err } => variant_size_and_alignment([ok.deref(), err].into_iter()),
Type::Result { ok, err } => {
variant_size_and_alignment([ok.as_deref(), err.as_deref()].into_iter())
}
Type::Flags(count) => match FlagsSize::from_count(count.0) {
FlagsSize::Size0 => SizeAndAlignment {
@@ -299,15 +305,17 @@ fn record_size_and_alignment<'a>(types: impl Iterator<Item = &'a Type>) -> SizeA
}
fn variant_size_and_alignment<'a>(
types: impl ExactSizeIterator<Item = &'a Type>,
types: impl ExactSizeIterator<Item = Option<&'a Type>>,
) -> SizeAndAlignment {
let discriminant_size = DiscriminantSize::from_count(types.len()).unwrap();
let mut alignment = u32::from(discriminant_size);
let mut size = 0;
for ty in types {
let size_and_alignment = ty.size_and_alignment();
alignment = alignment.max(size_and_alignment.alignment);
size = size.max(size_and_alignment.size);
if let Some(ty) = ty {
let size_and_alignment = ty.size_and_alignment();
alignment = alignment.max(size_and_alignment.alignment);
size = size.max(size_and_alignment.size);
}
}
SizeAndAlignment {
@@ -319,12 +327,15 @@ fn variant_size_and_alignment<'a>(
}
}
fn make_import_and_export(params: &[Type], result: &Type) -> String {
fn make_import_and_export(params: &[Type], results: &[Type]) -> String {
let params_lowered = params
.iter()
.flat_map(|ty| ty.lowered())
.collect::<Box<[_]>>();
let result_lowered = result.lowered();
let results_lowered = results
.iter()
.flat_map(|ty| ty.lowered())
.collect::<Box<[_]>>();
let mut core_params = String::new();
let mut gets = String::new();
@@ -345,13 +356,13 @@ fn make_import_and_export(params: &[Type], result: &Type) -> String {
format!("(param{core_params})")
};
if result_lowered.len() <= MAX_FLAT_RESULTS {
if results_lowered.len() <= MAX_FLAT_RESULTS {
let mut core_results = String::new();
for result in result_lowered.iter() {
for result in results_lowered.iter() {
write!(&mut core_results, " {result}").unwrap();
}
let maybe_core_results = if result_lowered.is_empty() {
let maybe_core_results = if results_lowered.is_empty() {
String::new()
} else {
format!("(result{core_results})")
@@ -368,7 +379,8 @@ fn make_import_and_export(params: &[Type], result: &Type) -> String {
)"#
)
} else {
let SizeAndAlignment { size, alignment } = result.size_and_alignment();
let SizeAndAlignment { size, alignment } =
Type::Record(VecInRange(results.to_vec())).size_and_alignment();
format!(
r#"
@@ -405,7 +417,6 @@ fn make_rust_name(name_counter: &mut u32) -> Ident {
/// parameter is used to accumulate declarations for each recursively visited type.
pub fn rust_type(ty: &Type, name_counter: &mut u32, declarations: &mut TokenStream) -> TokenStream {
match ty {
Type::Unit => quote!(()),
Type::Bool => quote!(bool),
Type::S8 => quote!(i8),
Type::U8 => quote!(u8),
@@ -458,29 +469,51 @@ pub fn rust_type(ty: &Type, name_counter: &mut u32, declarations: &mut TokenStre
quote!((#fields))
}
Type::Variant(types) | Type::Union(types) => {
Type::Variant(types) => {
let cases = types
.0
.iter()
.enumerate()
.map(|(index, ty)| {
let name = format_ident!("C{index}");
let ty = rust_type(ty, name_counter, declarations);
quote!(#name(#ty),)
let ty = match ty {
Some(ty) => {
let ty = rust_type(ty, name_counter, declarations);
quote!((#ty))
}
None => quote!(),
};
quote!(#name #ty,)
})
.collect::<TokenStream>();
let name = make_rust_name(name_counter);
declarations.extend(quote! {
#[derive(ComponentType, Lift, Lower, PartialEq, Debug, Clone, Arbitrary)]
#[component(variant)]
enum #name {
#cases
}
});
let which = if let Type::Variant(_) = ty {
quote!(variant)
} else {
quote!(union)
};
quote!(#name)
}
Type::Union(types) => {
let cases = types
.0
.iter()
.enumerate()
.map(|(index, ty)| {
let name = format_ident!("U{index}");
let ty = rust_type(ty, name_counter, declarations);
quote!(#name(#ty),)
})
.collect::<TokenStream>();
let name = make_rust_name(name_counter);
declarations.extend(quote! {
#[derive(ComponentType, Lift, Lower, PartialEq, Debug, Clone, Arbitrary)]
#[component(#which)]
#[component(union)]
enum #name {
#cases
}
@@ -491,7 +524,7 @@ pub fn rust_type(ty: &Type, name_counter: &mut u32, declarations: &mut TokenStre
Type::Enum(count) => {
let cases = (0..count.0)
.map(|index| {
let name = format_ident!("C{index}");
let name = format_ident!("E{index}");
quote!(#name,)
})
.collect::<TokenStream>();
@@ -512,9 +545,15 @@ pub fn rust_type(ty: &Type, name_counter: &mut u32, declarations: &mut TokenStre
let ty = rust_type(ty, name_counter, declarations);
quote!(Option<#ty>)
}
Type::Expected { ok, err } => {
let ok = rust_type(ok, name_counter, declarations);
let err = rust_type(err, name_counter, declarations);
Type::Result { ok, err } => {
let ok = match ok {
Some(ok) => rust_type(ok, name_counter, declarations),
None => quote!(()),
};
let err = match err {
Some(err) => rust_type(err, name_counter, declarations),
None => quote!(()),
};
quote!(Result<#ok, #err>)
}
Type::Flags(count) => {
@@ -564,7 +603,6 @@ impl<'a> TypesBuilder<'a> {
fn write_ref(&mut self, ty: &'a Type, dst: &mut String) {
match ty {
// Primitive types can be referenced directly
Type::Unit => dst.push_str("unit"),
Type::Bool => dst.push_str("bool"),
Type::S8 => dst.push_str("s8"),
Type::U8 => dst.push_str("u8"),
@@ -588,7 +626,7 @@ impl<'a> TypesBuilder<'a> {
| Type::Enum(_)
| Type::Union(_)
| Type::Option(_)
| Type::Expected { .. }
| Type::Result { .. }
| Type::Flags(_) => {
let idx = self.next;
self.next += 1;
@@ -601,8 +639,7 @@ impl<'a> TypesBuilder<'a> {
fn write_decl(&mut self, idx: u32, ty: &'a Type) -> String {
let mut decl = format!("(type $t{idx} ");
match ty {
Type::Unit
| Type::Bool
Type::Bool
| Type::S8
| Type::U8
| Type::S16
@@ -641,8 +678,11 @@ impl<'a> TypesBuilder<'a> {
Type::Variant(types) => {
decl.push_str("(variant");
for (index, ty) in types.iter().enumerate() {
write!(decl, r#" (case "C{index}" "#).unwrap();
self.write_ref(ty, &mut decl);
write!(decl, r#" (case "C{index}""#).unwrap();
if let Some(ty) = ty {
decl.push_str(" ");
self.write_ref(ty, &mut decl);
}
decl.push_str(")");
}
decl.push_str(")");
@@ -667,11 +707,17 @@ impl<'a> TypesBuilder<'a> {
self.write_ref(ty, &mut decl);
decl.push_str(")");
}
Type::Expected { ok, err } => {
decl.push_str("(expected ");
self.write_ref(ok, &mut decl);
decl.push_str(" ");
self.write_ref(err, &mut decl);
Type::Result { ok, err } => {
decl.push_str("(result");
if let Some(ok) = ok {
decl.push_str(" ");
self.write_ref(ok, &mut decl);
}
if let Some(err) = err {
decl.push_str(" (error ");
self.write_ref(err, &mut decl);
decl.push_str(")");
}
decl.push_str(")");
}
Type::Flags(count) => {
@@ -695,7 +741,7 @@ pub struct Declarations {
/// Parameter declarations used for the imported and exported functions
pub params: Cow<'static, str>,
/// Result declaration used for the imported and exported functions
pub result: Cow<'static, str>,
pub results: Cow<'static, str>,
/// A WAT fragment representing the core function import and export to use for testing
pub import_and_export: Cow<'static, str>,
/// String encoding to use for host -> component
@@ -710,7 +756,7 @@ impl Declarations {
let Self {
types,
params,
result,
results,
import_and_export,
encoding1,
encoding2,
@@ -768,7 +814,7 @@ impl Declarations {
{types}
(type $sig (func {params} {result}))
(type $sig (func {params} {results}))
(import "{IMPORT_FUNCTION}" (func $f (type $sig)))
{c1}
@@ -783,12 +829,12 @@ impl Declarations {
}
/// Represents a test case for calling a component function
#[derive(Debug)]
#[derive(Arbitrary, Debug)]
pub struct TestCase {
/// The types of parameters to pass to the function
pub params: Box<[Type]>,
/// The type of the result to be returned by the function
pub result: Type,
pub params: VecInRange<Type, 0, MAX_ARITY>,
/// The result types of the the function
pub results: VecInRange<Type, 0, MAX_ARITY>,
/// String encoding to use from host-to-component.
pub encoding1: StringEncoding,
/// String encoding to use from component-to-host.
@@ -801,17 +847,20 @@ impl TestCase {
let mut builder = TypesBuilder::default();
let mut params = String::new();
for ty in self.params.iter() {
params.push_str(" (param ");
for (i, ty) in self.params.iter().enumerate() {
params.push_str(&format!(" (param \"p{i}\" "));
builder.write_ref(ty, &mut params);
params.push_str(")");
}
let mut result = String::from("(result ");
builder.write_ref(&self.result, &mut result);
result.push_str(")");
let mut results = String::new();
for (i, ty) in self.results.iter().enumerate() {
results.push_str(&format!(" (result \"r{i}\" "));
builder.write_ref(ty, &mut results);
results.push_str(")");
}
let import_and_export = make_import_and_export(&self.params, &self.result);
let import_and_export = make_import_and_export(&self.params, &self.results);
let mut type_decls = Vec::new();
while let Some((idx, ty)) = builder.worklist.pop() {
@@ -830,7 +879,7 @@ impl TestCase {
Declarations {
types: types.into(),
params: params.into(),
result: result.into(),
results: results.into(),
import_and_export: import_and_export.into(),
encoding1: self.encoding1,
encoding2: self.encoding2,
@@ -838,21 +887,6 @@ impl TestCase {
}
}
impl<'a> Arbitrary<'a> for TestCase {
/// Generate an arbitrary [`TestCase`].
fn arbitrary(input: &mut Unstructured<'a>) -> arbitrary::Result<Self> {
Ok(Self {
params: input
.arbitrary_iter()?
.take(MAX_ARITY)
.collect::<arbitrary::Result<Box<[_]>>>()?,
result: input.arbitrary()?,
encoding1: input.arbitrary()?,
encoding2: input.arbitrary()?,
})
}
}
#[derive(Copy, Clone, Debug, Arbitrary)]
pub enum StringEncoding {
Utf8,