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/* tmpl-condition-node.c
*
* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
*
* This file 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 file 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 General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define G_LOG_DOMAIN "tmpl-condition-node"
#include "tmpl-condition-node.h"
#include "tmpl-debug.h"
#include "tmpl-error.h"
struct _TmplConditionNode
{
TmplNode parent_instance;
GPtrArray *children;
TmplExpr *condition;
};
G_DEFINE_TYPE (TmplConditionNode, tmpl_condition_node, TMPL_TYPE_NODE)
static gboolean
tmpl_condition_node_accept (TmplNode *node,
TmplLexer *lexer,
GCancellable *cancellable,
GError **error)
{
TmplConditionNode *self = (TmplConditionNode *)node;
TmplToken *token = NULL;
TMPL_ENTRY;
g_assert (TMPL_IS_NODE (node));
g_assert (lexer != NULL);
g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
/*
* We are an if/else if/else condition, if we come across an
* end/else if/else then we need to unget and allow the parent
* branch to resolve.
*/
while (TRUE)
{
TmplNode *child;
if (!tmpl_lexer_next (lexer, &token, cancellable, error))
TMPL_RETURN (FALSE);
switch (tmpl_token_type (token))
{
case TMPL_TOKEN_EOF:
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_SYNTAX_ERROR,
"Unexpected end-of-file reached.");
TMPL_RETURN (FALSE);
case TMPL_TOKEN_ELSE_IF:
case TMPL_TOKEN_ELSE:
case TMPL_TOKEN_END:
tmpl_lexer_unget (lexer, token);
TMPL_RETURN (TRUE);
case TMPL_TOKEN_TEXT:
case TMPL_TOKEN_IF:
case TMPL_TOKEN_FOR:
case TMPL_TOKEN_EXPRESSION:
child = tmpl_node_new_for_token (token, error);
tmpl_token_free (token);
if (child == NULL)
TMPL_RETURN (FALSE);
if (self->children == NULL)
self->children = g_ptr_array_new_with_free_func (g_object_unref);
g_ptr_array_add (self->children, child);
if (!tmpl_node_accept (child, lexer, cancellable, error))
TMPL_RETURN (FALSE);
break;
case TMPL_TOKEN_INCLUDE:
default:
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_SYNTAX_ERROR,
"Invalid token type");
TMPL_RETURN (FALSE);
}
}
g_assert_not_reached ();
}
static void
tmpl_condition_node_visit_children (TmplNode *node,
TmplNodeVisitor visitor,
gpointer user_data)
{
TmplConditionNode *self = (TmplConditionNode *)node;
g_assert (TMPL_IS_CONDITION_NODE (self));
g_assert (visitor != NULL);
if (self->children != NULL)
{
for (guint i = 0; i < self->children->len; i++)
{
TmplNode *child = g_ptr_array_index (self->children, i);
visitor (child, user_data);
}
}
}
static void
tmpl_condition_node_finalize (GObject *object)
{
TmplConditionNode *self = (TmplConditionNode *)object;
g_clear_pointer (&self->condition, tmpl_expr_unref);
g_clear_pointer (&self->children, g_ptr_array_unref);
G_OBJECT_CLASS (tmpl_condition_node_parent_class)->finalize (object);
}
static void
tmpl_condition_node_class_init (TmplConditionNodeClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
TmplNodeClass *node_class = TMPL_NODE_CLASS (klass);
object_class->finalize = tmpl_condition_node_finalize;
node_class->accept = tmpl_condition_node_accept;
node_class->visit_children = tmpl_condition_node_visit_children;
}
static void
tmpl_condition_node_init (TmplConditionNode *self)
{
}
TmplNode *
tmpl_condition_node_new (TmplExpr *condition)
{
TmplConditionNode *self;
self = g_object_new (TMPL_TYPE_CONDITION_NODE, NULL);
self->condition = condition;
return TMPL_NODE (self);
}
TmplExpr *
tmpl_condition_node_get_condition (TmplConditionNode *self)
{
g_return_val_if_fail (TMPL_IS_CONDITION_NODE (self), NULL);
return self->condition;
}
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