internal/cm: update to go.bytecodealliance.org/cm@v0.2.0

src/internal/cm/error.go

@@ -0,0 +1,40 @@
+package cm
+
+import "unsafe"
+
+// ErrorContext represents the Component Model [error-context] type,
+// an immutable, non-deterministic, host-defined value meant to aid in debugging.
+//
+// [error-context]: https://github.com/WebAssembly/component-model/blob/main/design/mvp/Explainer.md#error-context-type
+type ErrorContext struct {
+	_ HostLayout
+	errorContext
+}
+
+type errorContext uint32
+
+// Error implements the [error] interface. It returns the debug message associated with err.
+func (err errorContext) Error() string {
+	return err.DebugMessage()
+}
+
+// String implements [fmt.Stringer].
+func (err errorContext) String() string {
+	return err.DebugMessage()
+}
+
+// DebugMessage represents the Canonical ABI [error-context.debug-message] function.
+//
+// [error-context.debug-message]: https://github.com/WebAssembly/component-model/blob/main/design/mvp/Explainer.md#error-contextdebug-message
+func (err errorContext) DebugMessage() string {
+	var s string
+	wasmimport_errorContextDebugMessage(err, unsafe.Pointer(&s))
+	return s
+}
+
+// Drop represents the Canonical ABI [error-context.drop] function.
+//
+// [error-context.drop]: https://github.com/WebAssembly/component-model/blob/main/design/mvp/Explainer.md#error-contextdrop
+func (err errorContext) Drop() {
+	wasmimport_errorContextDrop(err)
+}