/*
Convert this MonoError to an exception if it's faulty or return NULL.
The error object is cleant after.
*/
MonoException*
mono_error_convert_to_exception (MonoError *target_error)
{
ERROR_DECL (error);
MonoException *ex;
/* Mempool stored error shouldn't be cleaned up */
g_assert (!is_boxed ((MonoErrorInternal*)target_error));
if (mono_error_ok (target_error))
return NULL;
ex = mono_error_prepare_exception (target_error, error);
if (!mono_error_ok (error)) {
ERROR_DECL (second_chance);
/*Try to produce the exception for the second error. FIXME maybe we should log about the original one*/
ex = mono_error_prepare_exception (error, second_chance);
// We cannot reasonably handle double faults, maybe later.
g_assert (mono_error_ok (second_chance));
mono_error_cleanup (error);
}
mono_error_cleanup (target_error);
return ex;
}
MonoException *
mono_get_exception_runtime_wrapped (MonoObject *wrapped_exception)
{
MonoError error;
MonoClass *klass;
MonoObject *o;
MonoMethod *method;
MonoDomain *domain = mono_domain_get ();
gpointer params [16];
klass = mono_class_load_from_name (mono_get_corlib (), "System.Runtime.CompilerServices", "RuntimeWrappedException");
o = mono_object_new_checked (domain, klass, &error);
g_assert (o != NULL && mono_error_ok (&error)); /* FIXME don't swallow the error */
method = mono_class_get_method_from_name (klass, ".ctor", 1);
g_assert (method);
params [0] = wrapped_exception;
mono_runtime_invoke_checked (method, o, params, &error);
mono_error_raise_exception (&error); /* FIXME don't raise here */
return (MonoException *)o;
}
/**
* mono_exception_from_token:
* @image: the Mono image where to look for the class
* @token: The type token of the class
*
* Creates an exception of the type given by @token.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_token (MonoImage *image, guint32 token)
{
MonoError error;
MonoClass *klass;
MonoObject *o;
klass = mono_class_get_checked (image, token, &error);
g_assert (mono_error_ok (&error)); /* FIXME handle the error. */
o = mono_object_new_checked (mono_domain_get (), klass, &error);
g_assert (o != NULL && mono_error_ok (&error)); /* FIXME don't swallow the error */
mono_runtime_object_init (o);
return (MonoException *)o;
}
void
mono_error_assert_ok_pos (MonoError *error, const char* filename, int lineno)
{
if (mono_error_ok (error))
return;
g_error ("%s:%d: %s\n", filename, lineno, mono_error_get_message (error));
}
MonoExceptionHandle
mono_error_convert_to_exception_handle (MonoError *error)
{
//FIXMEcoop mono_error_convert_to_exception is raw pointer
// The "optimization" here is important to significantly reduce handle usage.
return mono_error_ok (error) ? MONO_HANDLE_CAST (MonoException, NULL_HANDLE)
: MONO_HANDLE_NEW (MonoException, mono_error_convert_to_exception (error));
}
/*
* mono_basic_block_split:
*
* Return the list of basic blocks of method. Return NULL on failure and set @error.
*/
MonoSimpleBasicBlock*
mono_basic_block_split (MonoMethod *method, MonoError *error)
{
MonoSimpleBasicBlock *bb, *root;
const unsigned char *start, *end;
MonoMethodHeader *header = mono_method_get_header (method);
mono_error_init (error);
if (!header) {
mono_error_set_not_verifiable (error, method, "Could not decode header");
return NULL;
}
start = header->code;
end = start + header->code_size;
bb = g_new0 (MonoSimpleBasicBlock, 1);
bb->start = 0;
bb->end = end - start;
bb->colour = BLACK;
bb->dead = FALSE;
root = bb;
bb_formation_il_pass (start, end, bb, &root, method, error);
if (!mono_error_ok (error))
goto fail;
bb_formation_eh_pass (header, bb, &root, method, error);
if (!mono_error_ok (error))
goto fail;
bb_liveness (bb);
#if DEBUG_BB
dump_bb_list (bb, &root, g_strdup_printf("AFTER LIVENESS %s", mono_method_full_name (method, TRUE)));
#endif
mono_metadata_free_mh (header);
return bb;
fail:
mono_metadata_free_mh (header);
mono_basic_block_free (bb);
return NULL;
}
/**
* mono_exception_from_token_two_strings:
*
* Same as mono_exception_from_name_two_strings, but lookup the exception class using
* IMAGE and TOKEN.
*/
MonoException *
mono_exception_from_token_two_strings (MonoImage *image, guint32 token,
MonoString *a1, MonoString *a2)
{
MonoError error;
MonoClass *klass = mono_class_get_checked (image, token, &error);
g_assert (mono_error_ok (&error)); /* FIXME handle the error. */
return create_exception_two_strings (klass, a1, a2);
}
MonoException*
mono_error_convert_to_exception (MonoError *target_error)
{
MonoError error;
MonoException *ex;
if (mono_error_ok (target_error))
return NULL;
ex = mono_error_prepare_exception (target_error, &error);
if (!mono_error_ok (&error)) {
MonoError second_chance;
/*Try to produce the exception for the second error. FIXME maybe we should log about the original one*/
ex = mono_error_prepare_exception (&error, &second_chance);
g_assert (mono_error_ok (&second_chance)); /*We can't reasonable handle double faults, maybe later.*/
mono_error_cleanup (&error);
}
mono_error_cleanup (target_error);
return ex;
}
/**
* mono_exception_from_name_domain:
* @domain: Domain where the return object will be created.
* @image: the Mono image where to look for the class
* @name_space: the namespace for the class
* @name: class name
*
* Creates an exception object of the given namespace/name class on
* the given domain.
*
* Returns: the initialized exception instance.
*/
MonoException *
mono_exception_from_name_domain (MonoDomain *domain, MonoImage *image,
const char* name_space, const char *name)
{
MonoError error;
MonoClass *klass;
MonoObject *o;
MonoDomain *caller_domain = mono_domain_get ();
klass = mono_class_load_from_name (image, name_space, name);
o = mono_object_new_checked (domain, klass, &error);
g_assert (o != NULL && mono_error_ok (&error)); /* FIXME don't swallow the error */
if (domain != caller_domain)
mono_domain_set_internal (domain);
mono_runtime_object_init (o);
if (domain != caller_domain)
mono_domain_set_internal (caller_domain);
return (MonoException *)o;
}
/*Can fail with out-of-memory*/
MonoException*
mono_error_prepare_exception (MonoError *oerror, MonoError *error_out)
{
MonoErrorInternal *error = (MonoErrorInternal*)oerror;
MonoException* exception = NULL;
MonoString *assembly_name = NULL, *type_name = NULL, *method_name = NULL, *field_name = NULL, *msg = NULL;
MonoDomain *domain = mono_domain_get ();
mono_error_init (error_out);
switch (error->error_code) {
case MONO_ERROR_NONE:
return NULL;
case MONO_ERROR_MISSING_METHOD:
if ((error->type_name || error->exn.klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
method_name = mono_string_new (domain, error->member_name);
if (!method_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate method name");
break;
}
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "MissingMethodException", type_name, method_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", error->full_message);
}
break;
case MONO_ERROR_MISSING_FIELD:
if ((error->type_name || error->exn.klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
field_name = mono_string_new (domain, error->member_name);
if (!field_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate field name");
break;
}
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "MissingFieldException", type_name, field_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", error->full_message);
}
break;
case MONO_ERROR_TYPE_LOAD:
if ((error->type_name && error->assembly_name) || error->exn.klass) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
exception = mono_exception_from_name_two_strings_checked (mono_get_corlib (), "System", "TypeLoadException", type_name, assembly_name, error_out);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", error->full_message);
}
break;
case MONO_ERROR_FILE_NOT_FOUND:
case MONO_ERROR_BAD_IMAGE:
if (error->assembly_name) {
msg = mono_string_new (domain, error->full_message);
if (!msg) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_two_strings_checked (mono_get_corlib (), "System.IO", "FileNotFoundException", msg, assembly_name, error_out);
else
exception = mono_exception_from_name_two_strings_checked (mono_defaults.corlib, "System", "BadImageFormatException", msg, assembly_name, error_out);
} else {
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_msg (mono_get_corlib (), "System.IO", "FileNotFoundException", error->full_message);
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "BadImageFormatException", error->full_message);
}
break;
case MONO_ERROR_OUT_OF_MEMORY:
exception = mono_get_exception_out_of_memory ();
break;
case MONO_ERROR_ARGUMENT:
exception = mono_get_exception_argument (error->first_argument, error->full_message);
break;
case MONO_ERROR_ARGUMENT_NULL:
exception = mono_get_exception_argument_null (error->first_argument);
break;
case MONO_ERROR_NOT_VERIFIABLE: {
char *type_name = NULL, *message;
if (error->exn.klass) {
type_name = mono_type_get_full_name (error->exn.klass);
if (!type_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
}
message = g_strdup_printf ("Error in %s:%s %s", type_name, error->member_name, error->full_message);
if (!message) {
g_free (type_name);
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System.Security", "VerificationException", message);
g_free (message);
g_free (type_name);
break;
}
case MONO_ERROR_GENERIC:
if (!error->exception_name_space || !error->exception_name)
mono_error_set_execution_engine (error_out, "MonoError with generic error but no exception name was supplied");
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, error->exception_name_space, error->exception_name, error->full_message);
break;
case MONO_ERROR_EXCEPTION_INSTANCE:
exception = (MonoException*) mono_gchandle_get_target (error->exn.instance_handle);
break;
case MONO_ERROR_CLEANUP_CALLED_SENTINEL:
mono_error_set_execution_engine (error_out, "MonoError reused after mono_error_cleanup");
break;
case MONO_ERROR_INVALID_PROGRAM: {
gboolean lacks_message = error->flags & MONO_ERROR_INCOMPLETE;
if (lacks_message)
return mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", "");
else
return mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", error->full_message);
}
default:
mono_error_set_execution_engine (error_out, "Invalid error-code %d", error->error_code);
}
if (!mono_error_ok (error_out))
return NULL;
if (!exception)
mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
return exception;
}
/*Can fail with out-of-memory*/
MonoException*
mono_error_prepare_exception (MonoError *oerror, MonoError *error_out)
{
HANDLE_FUNCTION_ENTER ();
MonoErrorInternal *error = (MonoErrorInternal*)oerror;
MonoExceptionHandle exception = MONO_HANDLE_CAST (MonoException, mono_new_null ());
MonoDomain *domain = mono_domain_get ();
char *type_name = NULL;
char *message = NULL;
error_init (error_out);
const guint16 error_code = error->error_code;
g_assert (error_code != MONO_ERROR_CLEANUP_CALLED_SENTINEL);
switch (error_code) {
case MONO_ERROR_NONE:
goto exit;
case MONO_ERROR_MISSING_METHOD:
exception = mono_corlib_exception_new_with_args ("System", "MissingMethodException", error->full_message, error->first_argument, error_out);
break;
case MONO_ERROR_BAD_IMAGE:
exception = mono_corlib_exception_new_with_args ("System", "BadImageFormatException", error->full_message, error->first_argument, error_out);
break;
case MONO_ERROR_FILE_NOT_FOUND:
exception = mono_corlib_exception_new_with_args ("System.IO", "FileNotFoundException", error->full_message, error->first_argument, error_out);
break;
case MONO_ERROR_MISSING_FIELD:
exception = mono_corlib_exception_new_with_args ("System", "MissingFieldException", error->full_message, error->first_argument, error_out);
break;
case MONO_ERROR_MEMBER_ACCESS:
exception = mono_exception_new_by_name_msg (mono_defaults.corlib, "System", "MemberAccessException", error->full_message, error_out);
break;
case MONO_ERROR_TYPE_LOAD: {
MonoStringHandle assembly_name;
MonoStringHandle type_name;
if ((error->type_name && error->assembly_name) || error->exn.klass) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
if (error->assembly_name) {
assembly_name = string_new_cleanup (domain, error->assembly_name);
if (MONO_HANDLE_IS_NULL (assembly_name)) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
} else {
assembly_name = mono_string_empty_handle (domain);
}
exception = mono_exception_from_name_two_strings_checked (mono_get_corlib (), "System", "TypeLoadException", type_name, assembly_name, error_out);
if (!MONO_HANDLE_IS_NULL (exception)) {
const char *full_message = error->full_message;
if (full_message && full_message [0]) {
MonoStringHandle msg = string_new_cleanup (mono_domain_get (), full_message);
if (!MONO_HANDLE_IS_NULL (msg))
MONO_HANDLE_SET (exception, message, msg);
else
mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
}
}
} else {
exception = mono_exception_new_by_name_msg (mono_defaults.corlib, "System", "TypeLoadException", error->full_message, error_out);
}
}
break;
case MONO_ERROR_OUT_OF_MEMORY:
if (domain)
exception = MONO_HANDLE_NEW (MonoException, domain->out_of_memory_ex);
if (MONO_HANDLE_IS_NULL (exception))
exception = mono_get_exception_out_of_memory_handle ();
break;
case MONO_ERROR_ARGUMENT:
exception = mono_exception_new_argument (error->first_argument, error->full_message, error_out);
break;
case MONO_ERROR_ARGUMENT_NULL:
exception = mono_exception_new_argument_null (error->first_argument, error_out);
break;
case MONO_ERROR_ARGUMENT_OUT_OF_RANGE:
exception = mono_exception_new_argument_out_of_range(error->first_argument, error->full_message, error_out);
break;
case MONO_ERROR_NOT_VERIFIABLE:
if (error->exn.klass) {
type_name = mono_type_get_full_name (error->exn.klass);
if (!type_name)
goto out_of_memory;
}
message = g_strdup_printf ("Error in %s:%s %s", type_name, error->member_name, error->full_message);
if (!message)
goto out_of_memory;
exception = mono_exception_new_by_name_msg (mono_defaults.corlib, "System.Security", "VerificationException", message, error_out);
break;
case MONO_ERROR_GENERIC:
if (!error->exception_name_space || !error->exception_name)
mono_error_set_execution_engine (error_out, "MonoError with generic error but no exception name was supplied");
else
exception = mono_exception_new_by_name_msg (mono_defaults.corlib, error->exception_name_space, error->exception_name, error->full_message, error_out);
break;
case MONO_ERROR_EXCEPTION_INSTANCE:
exception = MONO_HANDLE_CAST (MonoException, mono_gchandle_get_target_handle (error->exn.instance_handle));
break;
case MONO_ERROR_CLEANUP_CALLED_SENTINEL:
mono_error_set_execution_engine (error_out, "MonoError reused after mono_error_cleanup");
break;
case MONO_ERROR_INVALID_PROGRAM:
exception = mono_exception_new_by_name_msg (mono_defaults.corlib, "System", "InvalidProgramException",
(error->flags & MONO_ERROR_INCOMPLETE) ? "" : error->full_message, error_out);
break;
default:
mono_error_set_execution_engine (error_out, "Invalid error-code %d", error->error_code);
}
if (!mono_error_ok (error_out))
goto return_null;
if (MONO_HANDLE_IS_NULL (exception))
mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
goto exit;
out_of_memory:
mono_error_set_out_of_memory (error_out, "Could not allocate message");
goto exit;
return_null:
exception = MONO_HANDLE_CAST (MonoException, mono_new_null ());
exit:
g_free (message);
g_free (type_name);
HANDLE_FUNCTION_RETURN_OBJ (exception);
}
/*Can fail with out-of-memory*/
MonoException*
mono_error_prepare_exception (MonoError *oerror, MonoError *error_out)
{
MonoErrorInternal *error = (MonoErrorInternal*)oerror;
MonoException* exception = NULL;
MonoString *assembly_name = NULL, *type_name = NULL, *method_name = NULL, *field_name = NULL, *msg = NULL;
MonoDomain *domain = mono_domain_get ();
mono_error_init (error_out);
switch (error->error_code) {
case MONO_ERROR_NONE:
return NULL;
case MONO_ERROR_MISSING_METHOD:
if ((error->type_name || error->klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
method_name = mono_string_new (domain, error->member_name);
if (!method_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate method name");
break;
}
exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "MissingMethodException", type_name, method_name);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", mono_internal_error_get_message (error));
}
break;
case MONO_ERROR_MISSING_FIELD:
if ((error->type_name || error->klass) && error->member_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
field_name = mono_string_new (domain, error->member_name);
if (!field_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate field name");
break;
}
exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "MissingFieldException", type_name, field_name);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", mono_internal_error_get_message (error));
}
break;
case MONO_ERROR_TYPE_LOAD:
if (error->type_name || error->assembly_name) {
type_name = get_type_name_as_mono_string (error, domain, error_out);
if (!mono_error_ok (error_out))
break;
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
exception = mono_exception_from_name_two_strings (mono_get_corlib (), "System", "TypeLoadException", type_name, assembly_name);
if (exception)
set_message_on_exception (exception, error, error_out);
} else {
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", mono_internal_error_get_message (error));
}
break;
case MONO_ERROR_FILE_NOT_FOUND:
case MONO_ERROR_BAD_IMAGE:
if (error->assembly_name) {
msg = mono_string_new (domain, mono_internal_error_get_message (error));
if (!msg) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
if (error->assembly_name) {
assembly_name = mono_string_new (domain, error->assembly_name);
if (!assembly_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate assembly name");
break;
}
}
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_two_strings (mono_get_corlib (), "System.IO", "FileNotFoundException", msg, assembly_name);
else
exception = mono_exception_from_name_two_strings (mono_defaults.corlib, "System", "BadImageFormatException", msg, assembly_name);
} else {
if (error->error_code == MONO_ERROR_FILE_NOT_FOUND)
exception = mono_exception_from_name_msg (mono_get_corlib (), "System.IO", "FileNotFoundException", mono_internal_error_get_message (error));
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System", "BadImageFormatException", mono_internal_error_get_message (error));
}
break;
case MONO_ERROR_OUT_OF_MEMORY:
exception = mono_get_exception_out_of_memory ();
break;
case MONO_ERROR_ARGUMENT:
exception = mono_get_exception_argument (error->type_name, mono_internal_error_get_message (error));
break;
case MONO_ERROR_NOT_VERIFIABLE: {
char *type_name = NULL, *message;
if (error->klass) {
type_name = mono_type_get_full_name (error->klass);
if (!type_name) {
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
}
message = g_strdup_printf ("Error in %s:%s %s", type_name, error->member_name, mono_internal_error_get_message (error));
if (!message) {
g_free (type_name);
mono_error_set_out_of_memory (error_out, "Could not allocate message");
break;
}
exception = mono_exception_from_name_msg (mono_defaults.corlib, "System.Security", "VerificationException", message);
g_free (message);
g_free (type_name);
break;
}
case MONO_ERROR_GENERIC:
if (!error->exception_name_space || !error->exception_name)
mono_error_set_generic_error (error_out, "System", "ExecutionEngineException", "MonoError with generic error but no exception name was supplied");
else
exception = mono_exception_from_name_msg (mono_defaults.corlib, error->exception_name_space, error->exception_name, mono_internal_error_get_message (error));
break;
default:
mono_error_set_generic_error (error_out, "System", "ExecutionEngineException", "Invalid error-code %d", error->error_code);
}
if (!mono_error_ok (error_out))
return NULL;
if (!exception)
mono_error_set_out_of_memory (error_out, "Could not allocate exception object");
return exception;
}