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Top-levels CoreFeatures and defaults to 2.0 (#800)

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While compilers should be conservative when targeting WebAssembly Core
features, runtimes should be lenient as otherwise people need to
constantly turn on all features. Currently, most examples have to turn
on 2.0 features because compilers such as AssemblyScript and TinyGo use
them by default. This matches the policy with the reality, and should
make first time use easier.

This top-levels an internal type as `api.CoreFeatures` and defaults to
2.0 as opposed to 1.0, our previous default. This is less cluttered than
the excess of `WithXXX` methods we had prior to implementing all
planned WebAssembly Core Specification 1.0 features.

Finally, this backfills rationale as flat config types were a distinct
decision even if feature set selection muddied the topic.

Signed-off-by: Adrian Cole <adrian@tetrate.io>
This commit is contained in:
Crypt Keeper
2022-09-06 15:14:36 +08:00
committed by GitHub
parent 2f56371078
commit b01effc8a9
67 changed files with 793 additions and 1017 deletions
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4
runtime_test.go
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@@ -24,7 +24,7 @@ var (
func TestNewRuntimeWithConfig_version(t *testing.T) {
cfg := NewRuntimeConfig().(*runtimeConfig)
oldNewEngine := cfg.newEngine
cfg.newEngine = func(ctx context.Context, features wasm.Features) wasm.Engine {
cfg.newEngine = func(ctx context.Context, features api.CoreFeatures) wasm.Engine {
// Ensures that wazeroVersion is propagated to the engine.
v := ctx.Value(version.WazeroVersionKey{})
require.NotNil(t, v)
@@ -519,7 +519,7 @@ func TestRuntime_CloseWithExitCode(t *testing.T) {
func TestRuntime_Close_ClosesCompiledModules(t *testing.T) {
engine := &mockEngine{name: "mock", cachedModules: map[*wasm.Module]struct{}{}}
conf := *engineLessConfig
conf.newEngine = func(context.Context, wasm.Features) wasm.Engine {
conf.newEngine = func(context.Context, api.CoreFeatures) wasm.Engine {
return engine
}
r := NewRuntimeWithConfig(testCtx, &conf)