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/*
* Copyright (c) 2023 Balazs Scheidler <balazs.scheidler@axoflow.com>
*
* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "filterx/expr-get-subscript.h"
#include "filterx/filterx-eval.h"
typedef struct _FilterXGetSubscript
{
FilterXExpr super;
FilterXExpr *operand;
FilterXExpr *key;
} FilterXGetSubscript;
static FilterXObject *
_eval(FilterXExpr *s)
{
FilterXGetSubscript *self = (FilterXGetSubscript *) s;
FilterXObject *result = NULL;
FilterXObject *variable = filterx_expr_eval_typed(self->operand);
if (!variable)
return NULL;
FilterXObject *key = filterx_expr_eval_typed(self->key);
if (!key)
goto exit;
result = filterx_object_get_subscript(variable, key);
if (!result)
filterx_eval_push_error("Object get-subscript failed", s, key);
exit:
filterx_object_unref(key);
filterx_object_unref(variable);
return result;
}
static gboolean
_isset(FilterXExpr *s)
{
FilterXGetSubscript *self = (FilterXGetSubscript *) s;
FilterXObject *variable = filterx_expr_eval_typed(self->operand);
if (!variable)
return FALSE;
FilterXObject *key = filterx_expr_eval_typed(self->key);
if (!key)
{
filterx_object_unref(variable);
return FALSE;
}
gboolean result = filterx_object_is_key_set(variable, key);
filterx_object_unref(key);
filterx_object_unref(variable);
return result;
}
static gboolean
_unset(FilterXExpr *s)
{
FilterXGetSubscript *self = (FilterXGetSubscript *) s;
gboolean result = FALSE;
FilterXObject *variable = filterx_expr_eval_typed(self->operand);
if (!variable)
return FALSE;
FilterXObject *key = filterx_expr_eval_typed(self->key);
if (!key)
goto exit;
if (variable->readonly)
{
filterx_eval_push_error("Object unset-subscript failed, object is readonly", s, key);
goto exit;
}
result = filterx_object_unset_key(variable, key);
exit:
filterx_object_unref(key);
filterx_object_unref(variable);
return result;
}
static void
_free(FilterXExpr *s)
{
FilterXGetSubscript *self = (FilterXGetSubscript *) s;
filterx_expr_unref(self->key);
filterx_expr_unref(self->operand);
filterx_expr_free_method(s);
}
/* NOTE: takes the object reference */
FilterXExpr *
filterx_get_subscript_new(FilterXExpr *operand, FilterXExpr *key)
{
FilterXGetSubscript *self = g_new0(FilterXGetSubscript, 1);
filterx_expr_init_instance(&self->super);
self->super.eval = _eval;
self->super.is_set = _isset;
self->super.unset = _unset;
self->super.free_fn = _free;
self->operand = operand;
self->key = key;
return &self->super;
}
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