Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

internal/go-ole/error.go

@@ -0,0 +1,51 @@
+package ole
+
+// OleError stores COM errors.
+type OleError struct {
+	hr          uintptr
+	description string
+	subError    error
+}
+
+// NewError creates new error with HResult.
+func NewError(hr uintptr) *OleError {
+	return &OleError{hr: hr}
+}
+
+// NewErrorWithDescription creates new COM error with HResult and description.
+func NewErrorWithDescription(hr uintptr, description string) *OleError {
+	return &OleError{hr: hr, description: description}
+}
+
+// NewErrorWithSubError creates new COM error with parent error.
+func NewErrorWithSubError(hr uintptr, description string, err error) *OleError {
+	return &OleError{hr: hr, description: description, subError: err}
+}
+
+// Code is the HResult.
+func (v *OleError) Code() uintptr {
+	return uintptr(v.hr)
+}
+
+// String description, either manually set or format message with error code.
+func (v *OleError) String() string {
+	if v.description != "" {
+		return errstr(int(v.hr)) + " (" + v.description + ")"
+	}
+	return errstr(int(v.hr))
+}
+
+// Error implements error interface.
+func (v *OleError) Error() string {
+	return v.String()
+}
+
+// Description retrieves error summary, if there is one.
+func (v *OleError) Description() string {
+	return v.description
+}
+
+// SubError returns parent error, if there is one.
+func (v *OleError) SubError() error {
+	return v.subError
+}