use std::collections::{BTreeMap, HashMap};
use std::fmt::{Display, Formatter};
use std::fs::canonicalize;
use std::path::PathBuf;
use std::{
panic::{self, AssertUnwindSafe},
time::Duration,
};
use eyre::{Context, Result, bail, eyre};
use log::{debug, error};
use tinywasm::types::{ExternRef, FuncRef, MemoryType, TableType, WasmType, WasmValue};
use tinywasm::{ExecProgress, Global, HostFunction, Imports, Memory, Module, ModuleInstance, Store, Table};
use wast::{QuoteWat, core::AbstractHeapType};
const TEST_TIME_SLICE: Duration = Duration::from_millis(20);
const TEST_MAX_SUSPENSIONS: u32 = 1000;
#[derive(Default)]
struct ModuleRegistry {
modules: HashMap<String, ModuleInstance>,
named_modules: HashMap<String, ModuleInstance>,
last_module: Option<ModuleInstance>,
}
impl ModuleRegistry {
fn modules(&self) -> &HashMap<String, ModuleInstance> {
&self.modules
}
fn update_last_module(&mut self, module: ModuleInstance, name: Option<String>) {
self.last_module = Some(module.clone());
if let Some(name) = name {
self.named_modules.insert(name, module);
}
}
fn register(&mut self, name: String, module: ModuleInstance) {
debug!("registering module: {name}");
self.modules.insert(name.clone(), module.clone());
self.last_module = Some(module.clone());
self.named_modules.insert(name, module);
}
fn get_idx(&self, module_id: Option<wast::token::Id<'_>>) -> Option<u32> {
match module_id {
Some(module) => self
.modules
.get(module.name())
.or_else(|| self.named_modules.get(module.name()))
.map(ModuleInstance::id),
None => self.last_module.as_ref().map(ModuleInstance::id),
}
}
fn get(&self, module_id: Option<wast::token::Id<'_>>) -> Option<ModuleInstance> {
match module_id {
Some(module_id) => {
self.modules.get(module_id.name()).or_else(|| self.named_modules.get(module_id.name())).cloned()
}
None => self.last_module.clone(),
}
}
fn last(&self) -> Option<ModuleInstance> {
self.last_module.clone()
}
}
#[derive(Default)]
pub struct WastRunner(BTreeMap<String, TestGroup>);
#[derive(Clone, Debug)]
pub struct GroupResult {
pub name: String,
pub file: String,
pub passed: usize,
pub failed: usize,
}
impl WastRunner {
pub fn new() -> Self {
Self::default()
}
pub fn run_paths(&mut self, tests: &[PathBuf]) -> Result<()> {
for path in expand_paths(tests)? {
let contents =
std::fs::read_to_string(&path).context(format!("failed to read file: {}", path.to_string_lossy()))?;
let file = TestFile {
contents: &contents,
name: path.to_string_lossy().to_string(),
parent: canonicalize(&path)?.to_string_lossy().to_string(),
};
self.run_file(file)?;
}
self.print_errors();
if self.failed() {
anstream::println!("{self}");
Err(eyre!("failed one or more tests"))
} else {
anstream::println!("{self}");
Ok(())
}
}
pub fn set_log_level(level: log::LevelFilter) {
let _ = pretty_env_logger::formatted_builder().filter_level(level).try_init();
}
pub fn failed(&self) -> bool {
self.0.values().any(|group| group.stats().1 > 0)
}
pub fn print_errors(&self) {
for group in self.0.values() {
for test in &group.tests {
if let Err(err) = &test.result {
eprintln!(
"{}:{}:{} {} failed: {}",
group.file,
test.linecol.0 + 1,
test.linecol.1 + 1,
test.name,
err
);
}
}
}
}
pub fn group_results(&self) -> Vec<GroupResult> {
self.0
.iter()
.map(|(name, group)| {
let (passed, failed) = group.stats();
GroupResult { name: name.clone(), file: group.file.clone(), passed, failed }
})
.collect()
}
fn test_group(&mut self, name: &str, file: &str) -> &mut TestGroup {
self.0.entry(name.to_string()).or_insert_with(|| TestGroup::new(file))
}
pub fn run_files<'a>(&mut self, tests: impl IntoIterator<Item = TestFile<'a>>) -> Result<()> {
for file in tests {
self.run_file(file)?;
}
Ok(())
}
fn imports(store: &mut Store, modules: &HashMap<String, ModuleInstance>) -> Result<Imports> {
let mut imports = Imports::new();
let table = Table::new(
store,
TableType::new(WasmType::RefFunc, 10, Some(20)),
WasmValue::default_for(WasmType::RefFunc),
)?;
let memory = Memory::new(store, MemoryType::default().with_page_count_initial(1).with_page_count_max(Some(2)))?;
let global_i32 =
Global::new(store, tinywasm::types::GlobalType::new(WasmType::I32, false), WasmValue::I32(666))?;
let global_i64 =
Global::new(store, tinywasm::types::GlobalType::new(WasmType::I64, false), WasmValue::I64(666))?;
let global_f32 =
Global::new(store, tinywasm::types::GlobalType::new(WasmType::F32, false), WasmValue::F32(666.6))?;
let global_f64 =
Global::new(store, tinywasm::types::GlobalType::new(WasmType::F64, false), WasmValue::F64(666.6))?;
imports
.define("spectest", "memory", memory)
.define("spectest", "table", table)
.define("spectest", "global_i32", global_i32)
.define("spectest", "global_i64", global_i64)
.define("spectest", "global_f32", global_f32)
.define("spectest", "global_f64", global_f64)
.define("spectest", "print", HostFunction::from(store, |_ctx: tinywasm::FuncContext, (): ()| Ok(())))
.define("spectest", "print_i32", HostFunction::from(store, |_ctx: tinywasm::FuncContext, _arg: i32| Ok(())))
.define("spectest", "print_i64", HostFunction::from(store, |_ctx: tinywasm::FuncContext, _arg: i64| Ok(())))
.define("spectest", "print_f32", HostFunction::from(store, |_ctx: tinywasm::FuncContext, _arg: f32| Ok(())))
.define("spectest", "print_f64", HostFunction::from(store, |_ctx: tinywasm::FuncContext, _arg: f64| Ok(())))
.define(
"spectest",
"print_i32_f32",
HostFunction::from(store, |_ctx: tinywasm::FuncContext, _args: (i32, f32)| Ok(())),
)
.define(
"spectest",
"print_f64_f64",
HostFunction::from(store, |_ctx: tinywasm::FuncContext, _args: (f64, f64)| Ok(())),
);
for (name, module) in modules {
imports.link_module(name, module.clone())?;
}
Ok(imports)
}
pub fn run_file(&mut self, file: TestFile<'_>) -> Result<()> {
let test_group = self.test_group(file.name(), file.parent());
let wast_raw = file.raw();
let wast = file.wast()?;
let directives = wast.directives()?;
let mut store = Store::default();
let mut module_registry = ModuleRegistry::default();
println!("running {} tests for group: {}", directives.len(), file.name());
for (i, directive) in directives.into_iter().enumerate() {
let span = directive.span();
use wast::WastDirective::{
AssertExhaustion, AssertInvalid, AssertMalformed, AssertReturn, AssertTrap, AssertUnlinkable, Invoke,
Module as Wat, Register,
};
match directive {
Register { span, name, .. } => {
let Some(last) = module_registry.last() else {
test_group.add_result(
&format!("Register({i})"),
span.linecol_in(wast_raw),
Err(eyre!("no module to register")),
);
continue;
};
module_registry.register(name.to_string(), last);
test_group.add_result(&format!("Register({i})"), span.linecol_in(wast_raw), Ok(()));
}
Wat(module) => {
let result = catch_unwind_silent(|| {
let (name, bytes) = encode_quote_wat(module);
let module = parse_module_bytes(&bytes).expect("failed to parse module bytes");
let imports = Self::imports(&mut store, module_registry.modules()).unwrap();
let module_instance = ModuleInstance::instantiate(&mut store, &module, Some(imports))
.expect("failed to instantiate module");
(name, module_instance)
})
.map_err(|e| eyre!("failed to parse wat module: {}", try_downcast_panic(e)));
match &result {
Err(err) => debug!("failed to parse module: {err:?}"),
Ok((name, module)) => module_registry.update_last_module(module.clone(), name.clone()),
};
test_group.add_result(&format!("Wat({i})"), span.linecol_in(wast_raw), result.map(|_| ()));
}
AssertMalformed { span, mut module, message } => {
let Ok(encoded) = module.encode() else {
test_group.add_result(&format!("AssertMalformed({i})"), span.linecol_in(wast_raw), Ok(()));
continue;
};
let res = catch_unwind_silent(|| parse_module_bytes(&encoded))
.map_err(|e| eyre!("failed to parse module (expected): {}", try_downcast_panic(e)))
.and_then(|res| res);
test_group.add_result(
&format!("AssertMalformed({i})"),
span.linecol_in(wast_raw),
match res {
Ok(_) => {
if message == "zero byte expected"
|| message == "integer representation too long"
|| message == "zero flag expected"
{
continue;
}
Err(eyre!("expected module to be malformed: {message}"))
}
Err(_) => Ok(()),
},
);
}
AssertInvalid { span, mut module, message } => {
if ["multiple memories", "type mismatch"].contains(&message) {
test_group.add_result(&format!("AssertInvalid({i})"), span.linecol_in(wast_raw), Ok(()));
continue;
}
let res = catch_unwind_silent(move || parse_module_bytes(&module.encode().unwrap()))
.map_err(|e| eyre!("failed to parse module (invalid): {}", try_downcast_panic(e)))
.and_then(|res| res);
test_group.add_result(
&format!("AssertInvalid({i})"),
span.linecol_in(wast_raw),
match res {
Ok(_) => Err(eyre!("expected module to be invalid")),
Err(_) => Ok(()),
},
);
}
AssertExhaustion { call, message, span } => {
let module = module_registry.get_idx(call.module);
let args = convert_wastargs(call.args)?;
let res =
catch_unwind_silent(|| exec_fn_instance(module, &mut store, call.name, &args).map(|_| ()));
let Ok(Err(tinywasm::Error::Trap(trap))) = res else {
test_group.add_result(
&format!("AssertExhaustion({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected trap")),
);
continue;
};
if !message.starts_with(trap.message()) && !trap.message().starts_with(message) {
test_group.add_result(
&format!("AssertExhaustion({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected trap: {}, got: {}", message, trap.message())),
);
continue;
}
test_group.add_result(&format!("AssertExhaustion({i})"), span.linecol_in(wast_raw), Ok(()));
}
AssertTrap { exec, message, span } => {
let res: Result<tinywasm::Result<()>, _> = catch_unwind_silent(|| {
let invoke = match exec {
wast::WastExecute::Wat(mut wat) => {
let module = parse_module_bytes(&wat.encode().expect("failed to encode module"))
.expect("failed to parse module");
let imports = Self::imports(&mut store, module_registry.modules()).unwrap();
ModuleInstance::instantiate(&mut store, &module, Some(imports))?;
return Ok(());
}
wast::WastExecute::Get { .. } => panic!("get not supported"),
wast::WastExecute::Invoke(invoke) => invoke,
};
let module = module_registry.get_idx(invoke.module);
let args =
convert_wastargs(invoke.args).map_err(|err| tinywasm::Error::Other(err.to_string()))?;
exec_fn_instance(module, &mut store, invoke.name, &args).map(|_| ())
});
match res {
Err(err) => test_group.add_result(
&format!("AssertTrap({i})"),
span.linecol_in(wast_raw),
Err(eyre!("test panicked: {}", try_downcast_panic(err))),
),
Ok(Err(tinywasm::Error::Trap(trap))) => {
if !message.starts_with(trap.message()) && !trap.message().starts_with(message) {
test_group.add_result(
&format!("AssertTrap({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected trap: {}, got: {}", message, trap.message())),
);
continue;
}
test_group.add_result(&format!("AssertTrap({i})"), span.linecol_in(wast_raw), Ok(()));
}
Ok(Err(err)) => test_group.add_result(
&format!("AssertTrap({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected trap, {}, got: {:?}", message, err)),
),
Ok(Ok(())) => test_group.add_result(
&format!("AssertTrap({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected trap {}, got Ok", message)),
),
}
}
AssertUnlinkable { mut module, span, message } => {
let res = catch_unwind_silent(|| {
let module = parse_module_bytes(&module.encode().expect("failed to encode module"))
.expect("failed to parse module");
let imports = Self::imports(&mut store, module_registry.modules()).unwrap();
ModuleInstance::instantiate(&mut store, &module, Some(imports))
});
match res {
Err(err) => test_group.add_result(
&format!("AssertUnlinkable({i})"),
span.linecol_in(wast_raw),
Err(eyre!("test panicked: {}", try_downcast_panic(err))),
),
Ok(Err(tinywasm::Error::Linker(err))) => {
if err.message() != message
&& (err.message() == "memory types incompatible"
&& message != "incompatible import type")
{
test_group.add_result(
&format!("AssertUnlinkable({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected linker error: {}, got: {}", message, err.message())),
);
continue;
}
test_group.add_result(&format!("AssertUnlinkable({i})"), span.linecol_in(wast_raw), Ok(()));
}
Ok(Err(err)) => test_group.add_result(
&format!("AssertUnlinkable({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected linker error, {}, got: {:?}", message, err)),
),
Ok(Ok(_)) => test_group.add_result(
&format!("AssertUnlinkable({i})"),
span.linecol_in(wast_raw),
Err(eyre!("expected linker error {}, got Ok", message)),
),
}
}
Invoke(invoke) => {
let name = invoke.name;
let res: Result<Result<()>, _> = catch_unwind_silent(|| {
let args = convert_wastargs(invoke.args)?;
let module = module_registry.get_idx(invoke.module);
exec_fn_instance(module, &mut store, invoke.name, &args).map_err(|e| {
error!("failed to execute function: {e:?}");
e
})?;
Ok(())
});
let res = res.map_err(|e| eyre!("test panicked: {}", try_downcast_panic(e))).and_then(|r| r);
test_group.add_result(&format!("Invoke({name}-{i})"), span.linecol_in(wast_raw), res);
}
AssertReturn { span, exec, results } => {
let expected_alternatives = match convert_wastret(results.into_iter()) {
Err(err) => {
test_group.add_result(
&format!("AssertReturn(unsupported-{i})"),
span.linecol_in(wast_raw),
Err(eyre!("failed to convert expected results: {err:?}")),
);
continue;
}
Ok(expected) => expected,
};
let invoke = match match exec {
wast::WastExecute::Wat(_) => Err(eyre!("wat not supported")),
wast::WastExecute::Get { module: module_id, global, .. } => {
let Some(module) = module_registry.get(module_id) else {
test_group.add_result(
&format!("AssertReturn(unsupported-{i})"),
span.linecol_in(wast_raw),
Err(eyre!("no module to get global from")),
);
continue;
};
let module_global = match module.global_get(&store, global) {
Ok(value) => value,
Err(err) => {
test_group.add_result(
&format!("AssertReturn(unsupported-{i})"),
span.linecol_in(wast_raw),
Err(eyre!("failed to get global: {err:?}")),
);
continue;
}
};
let expected = expected_alternatives
.iter()
.filter_map(|alts| alts.first())
.find(|exp| module_global.eq_loose(exp));
if expected.is_none() {
test_group.add_result(
&format!("AssertReturn(unsupported-{i})"),
span.linecol_in(wast_raw),
Err(eyre!(
"global value did not match any expected alternative: {:?}",
module_global
)),
);
continue;
}
test_group.add_result(
&format!("AssertReturn({global}-{i})"),
span.linecol_in(wast_raw),
Ok(()),
);
continue;
}
wast::WastExecute::Invoke(invoke) => Ok(invoke),
} {
Ok(invoke) => invoke,
Err(err) => {
test_group.add_result(
&format!("AssertReturn(unsupported-{i})"),
span.linecol_in(wast_raw),
Err(eyre!("unsupported directive: {err:?}")),
);
continue;
}
};
let invoke_name = invoke.name;
let res: Result<Result<()>, _> = catch_unwind_silent(|| {
let args = convert_wastargs(invoke.args)?;
let module = module_registry.get_idx(invoke.module);
let outcomes = exec_fn_instance(module, &mut store, invoke.name, &args).map_err(|e| {
error!("failed to execute function: {e:?}");
e
})?;
if !expected_alternatives.iter().any(|expected| expected.len() == outcomes.len()) {
return Err(eyre!(
"expected {} results, got {}",
expected_alternatives.first().map_or(0, |v| v.len()),
outcomes.len()
));
}
if expected_alternatives.iter().any(|expected| {
expected.len() == outcomes.len()
&& outcomes.iter().zip(expected.iter()).all(|(outcome, exp)| outcome.eq_loose(exp))
}) {
Ok(())
} else {
Err(eyre!("results did not match any expected alternative"))
}
});
let res = res.map_err(|e| eyre!("test panicked: {}", try_downcast_panic(e))).and_then(|r| r);
test_group.add_result(&format!("AssertReturn({invoke_name}-{i})"), span.linecol_in(wast_raw), res);
}
_ => test_group.add_result(
&format!("Unknown({i})"),
span.linecol_in(wast_raw),
Err(eyre!("unsupported directive")),
),
}
}
Ok(())
}
}
impl Display for WastRunner {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
use owo_colors::OwoColorize;
let mut total_passed = 0;
let mut total_failed = 0;
for group in self.group_results() {
total_passed += group.passed;
total_failed += group.failed;
writeln!(f, "{}", group.name.bold().underline())?;
writeln!(f, " Tests Passed: {}", group.passed.to_string().green())?;
if group.failed != 0 {
writeln!(f, " Tests Failed: {}", group.failed.to_string().red())?;
}
}
writeln!(f, "\n{}", "Total Test Summary:".bold().underline())?;
writeln!(f, " Total Tests: {}", total_passed + total_failed)?;
writeln!(f, " Total Passed: {}", total_passed.to_string().green())?;
writeln!(f, " Total Failed: {}", total_failed.to_string().red())?;
Ok(())
}
}
#[derive(Debug)]
struct TestGroup {
tests: Vec<TestCase>,
file: String,
}
impl TestGroup {
fn new(file: &str) -> Self {
Self { tests: Vec::new(), file: file.to_string() }
}
fn stats(&self) -> (usize, usize) {
let mut passed = 0;
let mut failed = 0;
for test in &self.tests {
match test.result {
Ok(()) => passed += 1,
Err(_) => failed += 1,
}
}
(passed, failed)
}
fn add_result(&mut self, name: &str, linecol: (usize, usize), result: Result<()>) {
self.tests.push(TestCase { name: name.to_string(), linecol, result });
}
}
#[derive(Debug)]
struct TestCase {
name: String,
linecol: (usize, usize),
result: Result<()>,
}
fn expand_paths(paths: &[PathBuf]) -> Result<Vec<PathBuf>> {
let mut files = Vec::new();
for path in paths {
if path.is_dir() {
for entry in std::fs::read_dir(path)? {
let entry = entry?;
let path = entry.path();
if path.extension().is_some_and(|ext| ext == "wast") {
files.push(path);
}
}
} else {
files.push(path.clone());
}
}
files.sort();
Ok(files)
}
#[derive(Debug)]
pub struct TestFile<'a> {
pub name: String,
pub contents: &'a str,
pub parent: String,
}
impl<'a> TestFile<'a> {
pub fn name(&self) -> &str {
&self.name
}
pub fn raw(&self) -> &'a str {
self.contents
}
pub fn parent(&self) -> &str {
&self.parent
}
pub fn wast(&self) -> wast::parser::Result<WastBuffer<'a>> {
let mut lexer = wast::lexer::Lexer::new(self.contents);
lexer.allow_confusing_unicode(true);
let parse_buffer = wast::parser::ParseBuffer::new_with_lexer(lexer)?;
Ok(WastBuffer { buffer: parse_buffer })
}
}
pub struct WastBuffer<'a> {
buffer: wast::parser::ParseBuffer<'a>,
}
impl<'a> WastBuffer<'a> {
pub fn directives(&'a self) -> wast::parser::Result<Vec<wast::WastDirective<'a>>> {
Ok(wast::parser::parse::<wast::Wast<'a>>(&self.buffer)?.directives)
}
}
fn exec_with_budget(
func: &tinywasm::Function,
store: &mut Store,
args: &[WasmValue],
) -> Result<Vec<WasmValue>, tinywasm::Error> {
let mut exec = func.call_resumable(store, args)?;
for _ in 0..TEST_MAX_SUSPENSIONS {
match exec.resume_with_time_budget(TEST_TIME_SLICE)? {
ExecProgress::Completed(values) => return Ok(values),
ExecProgress::Suspended => {}
}
}
Err(tinywasm::Error::Other(format!(
"testsuite execution timed out after {} time slices of {:?}",
TEST_MAX_SUSPENSIONS, TEST_TIME_SLICE
)))
}
fn try_downcast_panic(panic: Box<dyn std::any::Any + Send>) -> String {
let info = panic.downcast_ref::<panic::PanicHookInfo>().map(ToString::to_string);
let info_string = panic.downcast_ref::<String>().cloned();
let info_str = panic.downcast::<&str>().ok().map(|s| *s);
info.unwrap_or_else(|| info_str.unwrap_or(&info_string.unwrap_or("unknown panic".to_owned())).to_string())
}
fn exec_fn_instance(
instance: Option<u32>,
store: &mut Store,
name: &str,
args: &[WasmValue],
) -> Result<Vec<WasmValue>, tinywasm::Error> {
let Some(instance) = instance else {
return Err(tinywasm::Error::Other("no instance found".to_string()));
};
let Some(instance) = store.get_module_instance(instance) else {
return Err(tinywasm::Error::Other("no instance found".to_string()));
};
let func = instance.func_untyped(store, name)?;
exec_with_budget(&func, store, args)
}
fn catch_unwind_silent<R>(f: impl FnOnce() -> R) -> std::thread::Result<R> {
let prev_hook = panic::take_hook();
panic::set_hook(Box::new(|_| {}));
let result = panic::catch_unwind(AssertUnwindSafe(f));
panic::set_hook(prev_hook);
result
}
fn encode_quote_wat(module: QuoteWat) -> (Option<String>, Vec<u8>) {
match module {
QuoteWat::QuoteModule(_, quoted_wat) => {
let wat = quoted_wat
.iter()
.map(|(_, s)| std::str::from_utf8(s).expect("failed to convert wast to utf8"))
.collect::<Vec<_>>()
.join("\n");
let lexer = wast::lexer::Lexer::new(&wat);
let buf = wast::parser::ParseBuffer::new_with_lexer(lexer).expect("failed to create parse buffer");
let mut wat_data = wast::parser::parse::<wast::Wat>(&buf).expect("failed to parse wat");
(None, wat_data.encode().expect("failed to encode module"))
}
QuoteWat::Wat(mut wat) => {
let wast::Wat::Module(ref module) = wat else { unimplemented!("Not supported") };
(module.id.map(|id| id.name().to_string()), wat.encode().expect("failed to encode module"))
}
QuoteWat::QuoteComponent(..) => unimplemented!("components are not supported"),
}
}
fn parse_module_bytes(bytes: &[u8]) -> Result<Module> {
Ok(tinywasm::parse_bytes(bytes)?)
}
fn convert_wastargs(args: Vec<wast::WastArg>) -> Result<Vec<WasmValue>> {
args.into_iter().map(wastarg2tinywasmvalue).collect()
}
fn convert_wastret<'a>(args: impl Iterator<Item = wast::WastRet<'a>>) -> Result<Vec<Vec<WasmValue>>> {
let mut alternatives = vec![Vec::new()];
for arg in args {
let choices = wastret2tinywasmvalues(arg)?;
let mut next = Vec::with_capacity(alternatives.len() * choices.len());
for prefix in alternatives {
for choice in &choices {
let mut candidate = prefix.clone();
candidate.push(*choice);
next.push(candidate);
}
}
alternatives = next;
}
Ok(alternatives)
}
fn wastarg2tinywasmvalue(arg: wast::WastArg) -> Result<WasmValue> {
let wast::WastArg::Core(arg) = arg else { bail!("unsupported arg type: Component") };
use wast::core::WastArgCore::*;
Ok(match arg {
F32(f) => WasmValue::F32(f32::from_bits(f.bits)),
F64(f) => WasmValue::F64(f64::from_bits(f.bits)),
I32(i) => WasmValue::I32(i),
I64(i) => WasmValue::I64(i),
V128(i) => WasmValue::V128(i.to_le_bytes()),
RefExtern(v) => WasmValue::RefExtern(ExternRef::new(Some(v))),
RefNull(t) => match t {
wast::core::HeapType::Abstract { shared: false, ty: AbstractHeapType::Func } => {
WasmValue::RefFunc(FuncRef::null())
}
wast::core::HeapType::Abstract { shared: false, ty: AbstractHeapType::Extern } => {
WasmValue::RefExtern(ExternRef::null())
}
_ => bail!("unsupported arg type: refnull: {:?}", t),
},
RefHost(_) => bail!("unsupported arg type: RefHost"),
})
}
fn wast_v128_to_bytes(i: wast::core::V128Pattern) -> [u8; 16] {
let res: Vec<u8> = match i {
wast::core::V128Pattern::F32x4(f) => {
f.iter().flat_map(|v| nanpattern2tinywasmvalue(*v).unwrap().as_f32().unwrap().to_le_bytes()).collect()
}
wast::core::V128Pattern::F64x2(f) => {
f.iter().flat_map(|v| nanpattern2tinywasmvalue(*v).unwrap().as_f64().unwrap().to_le_bytes()).collect()
}
wast::core::V128Pattern::I16x8(f) => f.iter().flat_map(|v| v.to_le_bytes()).collect(),
wast::core::V128Pattern::I32x4(f) => f.iter().flat_map(|v| v.to_le_bytes()).collect(),
wast::core::V128Pattern::I64x2(f) => f.iter().flat_map(|v| v.to_le_bytes()).collect(),
wast::core::V128Pattern::I8x16(f) => f.iter().flat_map(|v| v.to_le_bytes()).collect(),
};
res.try_into().unwrap()
}
fn wastret2tinywasmvalues(ret: wast::WastRet) -> Result<Vec<WasmValue>> {
let wast::WastRet::Core(ret) = ret else { bail!("unsupported arg type") };
match ret {
wast::core::WastRetCore::Either(options) => {
options.into_iter().map(wastretcore2tinywasmvalue).collect::<Result<Vec<_>>>()
}
ret => Ok(vec![wastretcore2tinywasmvalue(ret)?]),
}
}
fn wastretcore2tinywasmvalue(ret: wast::core::WastRetCore) -> Result<WasmValue> {
use wast::core::WastRetCore::{F32, F64, I32, I64, RefExtern, RefFunc, RefNull, V128};
Ok(match ret {
F32(f) => nanpattern2tinywasmvalue(f)?,
F64(f) => nanpattern2tinywasmvalue(f)?,
I32(i) => WasmValue::I32(i),
I64(i) => WasmValue::I64(i),
V128(i) => WasmValue::V128(wast_v128_to_bytes(i)),
RefNull(t) => match t {
Some(wast::core::HeapType::Abstract { shared: false, ty: AbstractHeapType::Func }) => {
WasmValue::RefFunc(FuncRef::null())
}
Some(wast::core::HeapType::Abstract { shared: false, ty: AbstractHeapType::Extern }) => {
WasmValue::RefExtern(ExternRef::null())
}
_ => bail!("unsupported arg type: refnull: {:?}", t),
},
RefExtern(v) => WasmValue::RefExtern(ExternRef::new(v)),
RefFunc(v) => WasmValue::RefFunc(FuncRef::new(match v {
Some(wast::token::Index::Num(n, _)) => Some(n),
_ => bail!("unsupported arg type: reffunc: {:?}", v),
})),
a => bail!("unsupported arg type {:?}", a),
})
}
enum Bits {
U32(u32),
U64(u64),
}
trait FloatToken {
fn bits(&self) -> Bits;
fn canonical_nan() -> WasmValue;
fn arithmetic_nan() -> WasmValue;
fn value(&self) -> WasmValue {
match self.bits() {
Bits::U32(v) => WasmValue::F32(f32::from_bits(v)),
Bits::U64(v) => WasmValue::F64(f64::from_bits(v)),
}
}
}
impl FloatToken for wast::token::F32 {
fn bits(&self) -> Bits {
Bits::U32(self.bits)
}
fn canonical_nan() -> WasmValue {
WasmValue::F32(f32::NAN)
}
fn arithmetic_nan() -> WasmValue {
WasmValue::F32(f32::NAN)
}
}
impl FloatToken for wast::token::F64 {
fn bits(&self) -> Bits {
Bits::U64(self.bits)
}
fn canonical_nan() -> WasmValue {
WasmValue::F64(f64::NAN)
}
fn arithmetic_nan() -> WasmValue {
WasmValue::F64(f64::NAN)
}
}
fn nanpattern2tinywasmvalue<T>(arg: wast::core::NanPattern<T>) -> Result<WasmValue>
where
T: FloatToken,
{
use wast::core::NanPattern::{ArithmeticNan, CanonicalNan, Value};
Ok(match arg {
CanonicalNan => T::canonical_nan(),
ArithmeticNan => T::arithmetic_nan(),
Value(v) => v.value(),
})
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn runs_simple_wast_file() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("simple.wast");
std::fs::write(
&path,
"(module (func (export \"add\") (result i32) i32.const 1))\n(assert_return (invoke \"add\") (i32.const 1))",
)
.unwrap();
let mut runner = WastRunner::new();
runner.run_paths(&[path]).unwrap();
}
}
|
