Commit dd13bc7d authored by Johan Dahlin's avatar Johan Dahlin

[gifunctioninfo] Move over invoke function

Move over g_function_info_invoke to gifunctioninfo.c
parent 900a2a4a
......@@ -24,8 +24,7 @@
#include <girepository.h>
#include "girepository-private.h"
#include "gitypelib-internal.h"
/* GIFunctionInfo functions */
#include "girffi.h"
/**
* SECTION:gifunctioninfo
......@@ -167,3 +166,226 @@ g_function_info_get_vfunc (GIFunctionInfo *info)
return g_interface_info_get_vfunc (container, blob->index);
}
GQuark
g_invoke_error_quark (void)
{
static GQuark quark = 0;
if (quark == 0)
quark = g_quark_from_static_string ("g-invoke-error-quark");
return quark;
}
/**
* g_function_info_invoke:
* @info: a #GIFunctionInfo describing the function to invoke
* @in_args: an array of #GArgument<!-- -->s, one for each in
* parameter of @info. If there are no in parameter, @in_args
* can be %NULL
* @n_in_args: the length of the @in_args array
* @out_args: an array of #GArgument<!-- -->s, one for each out
* parameter of @info. If there are no out parameters, @out_args
* may be %NULL
* @n_out_args: the length of the @out_args array
* @return_value: return location for the return value of the
* function. If the function returns void, @return_value may be
* %NULL
* @error: return location for detailed error information, or %NULL
*
* Invokes the function described in @info with the given
* arguments. Note that inout parameters must appear in both
* argument lists. This function uses dlsym() to obtain a pointer
* to the function, so the library or shared object containing the
* described function must either be linked to the caller, or must
* have been g_module_symbol()<!-- -->ed before calling this function.
*
* Returns: %TRUE if the function has been invoked, %FALSE if an
* error occurred.
*/
gboolean
g_function_info_invoke (GIFunctionInfo *info,
const GArgument *in_args,
int n_in_args,
const GArgument *out_args,
int n_out_args,
GArgument *return_value,
GError **error)
{
ffi_cif cif;
ffi_type *rtype;
ffi_type **atypes;
const gchar *symbol;
gpointer func;
GITypeInfo *tinfo;
GIArgInfo *ainfo;
gboolean is_method;
gboolean throws;
gint n_args, n_invoke_args, in_pos, out_pos, i;
gpointer *args;
gboolean success = FALSE;
GError *local_error = NULL;
gpointer error_address = &local_error;
symbol = g_function_info_get_symbol (info);
if (!g_typelib_symbol (g_base_info_get_typelib((GIBaseInfo *) info),
symbol, &func))
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_SYMBOL_NOT_FOUND,
"Could not locate %s: %s", symbol, g_module_error ());
return FALSE;
}
is_method = (g_function_info_get_flags (info) & GI_FUNCTION_IS_METHOD) != 0
&& (g_function_info_get_flags (info) & GI_FUNCTION_IS_CONSTRUCTOR) == 0;
throws = g_function_info_get_flags (info) & GI_FUNCTION_THROWS;
tinfo = g_callable_info_get_return_type ((GICallableInfo *)info);
rtype = g_type_info_get_ffi_type (tinfo);
g_base_info_unref ((GIBaseInfo *)tinfo);
in_pos = 0;
out_pos = 0;
n_args = g_callable_info_get_n_args ((GICallableInfo *)info);
if (is_method)
{
if (n_in_args == 0)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling this)");
goto out;
}
n_invoke_args = n_args+1;
in_pos++;
}
else
n_invoke_args = n_args;
if (throws)
/* Add an argument for the GError */
n_invoke_args ++;
atypes = g_alloca (sizeof (ffi_type*) * n_invoke_args);
args = g_alloca (sizeof (gpointer) * n_invoke_args);
if (is_method)
{
atypes[0] = &ffi_type_pointer;
args[0] = (gpointer) &in_args[0];
}
for (i = 0; i < n_args; i++)
{
int offset = (is_method ? 1 : 0);
ainfo = g_callable_info_get_arg ((GICallableInfo *)info, i);
switch (g_arg_info_get_direction (ainfo))
{
case GI_DIRECTION_IN:
tinfo = g_arg_info_get_type (ainfo);
atypes[i+offset] = g_type_info_get_ffi_type (tinfo);
g_base_info_unref ((GIBaseInfo *)tinfo);
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling in)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
break;
case GI_DIRECTION_OUT:
atypes[i+offset] = &ffi_type_pointer;
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling out)");
goto out;
}
args[i+offset] = (gpointer)&out_args[out_pos];
out_pos++;
break;
case GI_DIRECTION_INOUT:
atypes[i+offset] = &ffi_type_pointer;
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling inout)");
goto out;
}
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling inout)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
out_pos++;
break;
default:
g_assert_not_reached ();
}
g_base_info_unref ((GIBaseInfo *)ainfo);
}
if (throws)
{
args[n_invoke_args - 1] = &error_address;
atypes[n_invoke_args - 1] = &ffi_type_pointer;
}
if (in_pos < n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"in\" arguments (at end)");
goto out;
}
if (out_pos < n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"out\" arguments (at end)");
goto out;
}
if (ffi_prep_cif (&cif, FFI_DEFAULT_ABI, n_invoke_args, rtype, atypes) != FFI_OK)
goto out;
g_return_val_if_fail (return_value, FALSE);
ffi_call (&cif, func, return_value, args);
if (local_error)
{
g_propagate_error (error, local_error);
success = FALSE;
}
else
{
success = TRUE;
}
out:
return success;
}
......@@ -23,235 +23,10 @@
#include <glib.h>
#include <glib-object.h>
#include "girepository.h"
#include <girepository.h>
#include "girffi.h"
#include "gitypelib-internal.h"
#include "config.h"
GQuark
g_invoke_error_quark (void)
{
static GQuark quark = 0;
if (quark == 0)
quark = g_quark_from_static_string ("g-invoke-error-quark");
return quark;
}
/**
* g_function_info_invoke:
* @info: a #GIFunctionInfo describing the function to invoke
* @in_args: an array of #GArgument<!-- -->s, one for each in
* parameter of @info. If there are no in parameter, @in_args
* can be %NULL
* @n_in_args: the length of the @in_args array
* @out_args: an array of #GArgument<!-- -->s, one for each out
* parameter of @info. If there are no out parameters, @out_args
* may be %NULL
* @n_out_args: the length of the @out_args array
* @return_value: return location for the return value of the
* function. If the function returns void, @return_value may be
* %NULL
* @error: return location for detailed error information, or %NULL
*
* Invokes the function described in @info with the given
* arguments. Note that inout parameters must appear in both
* argument lists. This function uses dlsym() to obtain a pointer
* to the function, so the library or shared object containing the
* described function must either be linked to the caller, or must
* have been g_module_symbol()<!-- -->ed before calling this function.
*
* Returns: %TRUE if the function has been invoked, %FALSE if an
* error occurred.
*/
gboolean
g_function_info_invoke (GIFunctionInfo *info,
const GArgument *in_args,
int n_in_args,
const GArgument *out_args,
int n_out_args,
GArgument *return_value,
GError **error)
{
ffi_cif cif;
ffi_type *rtype;
ffi_type **atypes;
const gchar *symbol;
gpointer func;
GITypeInfo *tinfo;
GIArgInfo *ainfo;
gboolean is_method;
gboolean throws;
gint n_args, n_invoke_args, in_pos, out_pos, i;
gpointer *args;
gboolean success = FALSE;
GError *local_error = NULL;
gpointer error_address = &local_error;
symbol = g_function_info_get_symbol (info);
if (!g_typelib_symbol (g_base_info_get_typelib((GIBaseInfo *) info),
symbol, &func))
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_SYMBOL_NOT_FOUND,
"Could not locate %s: %s", symbol, g_module_error ());
return FALSE;
}
is_method = (g_function_info_get_flags (info) & GI_FUNCTION_IS_METHOD) != 0
&& (g_function_info_get_flags (info) & GI_FUNCTION_IS_CONSTRUCTOR) == 0;
throws = g_function_info_get_flags (info) & GI_FUNCTION_THROWS;
tinfo = g_callable_info_get_return_type ((GICallableInfo *)info);
rtype = g_type_info_get_ffi_type (tinfo);
g_base_info_unref ((GIBaseInfo *)tinfo);
in_pos = 0;
out_pos = 0;
n_args = g_callable_info_get_n_args ((GICallableInfo *)info);
if (is_method)
{
if (n_in_args == 0)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling this)");
goto out;
}
n_invoke_args = n_args+1;
in_pos++;
}
else
n_invoke_args = n_args;
if (throws)
/* Add an argument for the GError */
n_invoke_args ++;
atypes = g_alloca (sizeof (ffi_type*) * n_invoke_args);
args = g_alloca (sizeof (gpointer) * n_invoke_args);
if (is_method)
{
atypes[0] = &ffi_type_pointer;
args[0] = (gpointer) &in_args[0];
}
for (i = 0; i < n_args; i++)
{
int offset = (is_method ? 1 : 0);
ainfo = g_callable_info_get_arg ((GICallableInfo *)info, i);
switch (g_arg_info_get_direction (ainfo))
{
case GI_DIRECTION_IN:
tinfo = g_arg_info_get_type (ainfo);
atypes[i+offset] = g_type_info_get_ffi_type (tinfo);
g_base_info_unref ((GIBaseInfo *)tinfo);
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling in)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
break;
case GI_DIRECTION_OUT:
atypes[i+offset] = &ffi_type_pointer;
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling out)");
goto out;
}
args[i+offset] = (gpointer)&out_args[out_pos];
out_pos++;
break;
case GI_DIRECTION_INOUT:
atypes[i+offset] = &ffi_type_pointer;
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling inout)");
goto out;
}
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling inout)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
out_pos++;
break;
default:
g_assert_not_reached ();
}
g_base_info_unref ((GIBaseInfo *)ainfo);
}
if (throws)
{
args[n_invoke_args - 1] = &error_address;
atypes[n_invoke_args - 1] = &ffi_type_pointer;
}
if (in_pos < n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"in\" arguments (at end)");
goto out;
}
if (out_pos < n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"out\" arguments (at end)");
goto out;
}
if (ffi_prep_cif (&cif, FFI_DEFAULT_ABI, n_invoke_args, rtype, atypes) != FFI_OK)
goto out;
g_return_val_if_fail (return_value, FALSE);
ffi_call (&cif, func, return_value, args);
if (local_error)
{
g_propagate_error (error, local_error);
success = FALSE;
}
else
{
success = TRUE;
}
out:
return success;
}
static ffi_type *
value_to_ffi_type (const GValue *gvalue, gpointer *value)
{
......
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