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/* Copyright (c) 2004, 2005 MySQL AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "myx_grt_private.h"
typedef struct MYX_GRT_FUNCTION_PRIVATE
{
MYX_GRT_VALUE *(*function)(MYX_GRT_VALUE*,void*);
} MYX_BUILTIN_FUNCTION;
static MYX_GRT_ERROR c_call_function(MYX_GRT_FUNCTION *function, MYX_GRT_VALUE *value, MYX_GRT_VALUE **retval);
MYX_GRT_MODULE_LOADER *myx_builtin_init_loader(MYX_GRT *grt)
{
MYX_GRT_MODULE_LOADER *loader= g_new0(MYX_GRT_MODULE_LOADER, 1);
loader->grt= grt;
loader->loader_type= MYX_BUILTIN_MODULE_TYPE;
loader->priv= NULL;
loader->init_module= NULL;
loader->call_function= c_call_function;
loader->extensions_num= 0;
loader->extensions= NULL;
return loader;
}
MYX_GRT_MODULE* myx_grt_module_register_builtin(MYX_GRT *grt, MYX_GRT_BUILTIN_MODULE *mod, void *function_data)
{
MYX_GRT_MODULE *module;
unsigned int i;
MYX_GRT_ERROR error;
GRT_ENTER(grt);
// init internal module descriptor
module= g_new0(MYX_GRT_MODULE, 1);
module->loader= myx_grt_get_loader_of_type(grt, MYX_BUILTIN_MODULE_TYPE);
module->priv= function_data;
module->name= g_strdup(mod->name);
module->path= NULL;
module->functions_num= mod->functions_num;
module->functions= g_new0(MYX_GRT_FUNCTION, module->functions_num);
for (i= 0; i < mod->functions_num; i++)
{
MYX_GRT_FUNCTION *func= module->functions+i;
MYX_BUILTIN_FUNCTION *bf= g_new0(MYX_BUILTIN_FUNCTION,1);
bf->function= mod->functions[i].function;
func->module= module;
myx_grt_parse_function_spec(mod->functions[i].name, func);
func->priv= bf;
}
module->extends= g_strdup(mod->extends);
if (getenv("GRT_VERBOSE"))
g_message("Initialized module %s", mod->name);
error= myx_grt_add_module(grt, module);
if (error != MYX_GRT_NO_ERROR)
GRT_RETURN(grt, NULL, MYX_GRT_MODULE *);
else
GRT_RETURN(grt, module, MYX_GRT_MODULE *);
}
void myx_grt_module_unregister_builtin(MYX_GRT *grt, MYX_GRT_MODULE *module)
{
unsigned int I;
myx_grt_remove_module(grt, module);
g_free(module->name);
for (I = 0; I < module->functions_num; ++I)
{
MYX_GRT_FUNCTION *func = module->functions + I;
g_free(func->priv);
};
g_free(module->functions);
g_free(module->extends);
g_free(module);
}
static MYX_GRT_ERROR c_call_function(MYX_GRT_FUNCTION *function, MYX_GRT_VALUE *value, MYX_GRT_VALUE **retval)
{
MYX_BUILTIN_FUNCTION *bfunc= (MYX_BUILTIN_FUNCTION*)function->priv;
MYX_GRT_ERROR error= MYX_GRT_NO_ERROR;
if (getenv("GRT_VERBOSE"))
g_message("Calling builtin function %s.%s", function->module->name, function->name);
// check if a parameter list was submitted
if ((myx_grt_value_get_type(value) == MYX_LIST_VALUE) && (myx_grt_bridge_list_item_count(value) > 0))
{
unsigned int i, global_ref= 0;
// if this is a list, check if there is any string that begins with "global::" in the list
for (i= 0; i < myx_grt_bridge_list_item_count(value); i++)
{
MYX_GRT_VALUE *arg= myx_grt_bridge_list_item_get(value, i, 0);
// if the arg is a string, check if the string starts "global::"
if ( (myx_grt_value_get_type(arg) == MYX_STRING_VALUE) &&
str_beginswith(myx_grt_bridge_value_as_string(arg), "global::") )
{
global_ref= 1;
break;
}
}
if (global_ref == 1)
{
MYX_GRT_VALUE *new_args= myx_grt_list_new(MYX_ANY_VALUE, NULL);
for (i= 0; i < myx_grt_bridge_list_item_count(value); i++)
{
MYX_GRT_VALUE *arg= myx_grt_bridge_list_item_get(value, i, 0);
// if the arg is a string, check if the string starts "global::"
if ( (myx_grt_value_get_type(arg) == MYX_STRING_VALUE) &&
str_beginswith(myx_grt_bridge_value_as_string(arg), "global::") )
{
// if so, take the "real" grt global value instead of the string
const char *path= myx_grt_bridge_value_as_string(arg)+8;
arg= myx_grt_dict_item_get_by_path((MYX_GRT *)(function->module->priv),
myx_grt_get_root((MYX_GRT *)(function->module->priv)), path);
}
myx_grt_list_item_add(new_args, arg);
}
*retval= (*bfunc->function)(new_args, function->module->priv);
myx_grt_value_release(new_args);
}
else
*retval= (*bfunc->function)(value, function->module->priv);
}
else
*retval= (*bfunc->function)(value, function->module->priv);
return error;
}
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