From 0d837c1c5d8d7c539b8ec10286541fa1625279ca Mon Sep 17 00:00:00 2001
From: Olivier Matz <zer0@droids-corp.org>
Date: Thu, 29 Nov 2018 19:54:20 +0100
Subject: [PATCH] use config for once node

---
 libecoli/ecoli_node_once.c | 72 +++++++++++++++++++++++++++++++++-----
 libecoli/ecoli_node_once.h |  4 +--
 2 files changed, 65 insertions(+), 11 deletions(-)

diff --git a/libecoli/ecoli_node_once.c b/libecoli/ecoli_node_once.c
index 6309878..989c710 100644
--- a/libecoli/ecoli_node_once.c
+++ b/libecoli/ecoli_node_once.c
@@ -19,6 +19,7 @@
 #include <ecoli_node_str.h>
 #include <ecoli_node_or.h>
 #include <ecoli_node_many.h>
+#include <ecoli_config.h>
 #include <ecoli_node_once.h>
 
 EC_LOG_TYPE_REGISTER(node_once);
@@ -115,12 +116,49 @@ ec_node_once_get_child(const struct ec_node *gen_node, size_t i,
 		return -1;
 
 	*child = node->child;
-	*refs = 1;
+	*refs = 2;
 	return 0;
 }
 
+static const struct ec_config_schema ec_node_once_schema[] = {
+	{
+		.key = "child",
+		.desc = "The child node.",
+		.type = EC_CONFIG_TYPE_NODE,
+	},
+	{
+		.type = EC_CONFIG_TYPE_NONE,
+	},
+};
+
+static int ec_node_once_set_config(struct ec_node *gen_node,
+				const struct ec_config *config)
+{
+	struct ec_node_once *node = (struct ec_node_once *)gen_node;
+	const struct ec_config *child;
+
+	child = ec_config_dict_get(config, "child");
+	if (child == NULL)
+		goto fail;
+	if (ec_config_get_type(child) != EC_CONFIG_TYPE_NODE) {
+		errno = EINVAL;
+		goto fail;
+	}
+
+	if (node->child != NULL)
+		ec_node_free(node->child);
+	node->child = ec_node_clone(child->node);
+
+	return 0;
+
+fail:
+	return -1;
+}
+
 static struct ec_node_type ec_node_once_type = {
 	.name = "once",
+	.schema = ec_node_once_schema,
+	.set_config = ec_node_once_set_config,
 	.parse = ec_node_once_parse,
 	.complete = ec_node_once_complete,
 	.size = sizeof(struct ec_node_once),
@@ -131,23 +169,39 @@ static struct ec_node_type ec_node_once_type = {
 
 EC_NODE_TYPE_REGISTER(ec_node_once_type);
 
-int ec_node_once_set(struct ec_node *gen_node, struct ec_node *child)
+int
+ec_node_once_set_child(struct ec_node *gen_node, struct ec_node *child)
 {
-	struct ec_node_once *node = (struct ec_node_once *)gen_node;
+	const struct ec_config *cur_config = NULL;
+	struct ec_config *config = NULL;
+	int ret;
 
-	if (gen_node == NULL || child == NULL) {
-		errno = EINVAL;
+	if (ec_node_check_type(gen_node, &ec_node_once_type) < 0)
 		goto fail;
-	}
 
-	if (ec_node_check_type(gen_node, &ec_node_once_type) < 0)
+	cur_config = ec_node_get_config(gen_node);
+	if (cur_config == NULL)
+		config = ec_config_dict();
+	else
+		config = ec_config_dup(cur_config);
+	if (config == NULL)
 		goto fail;
 
-	node->child = child;
+	if (ec_config_dict_set(config, "child", ec_config_node(child)) < 0) {
+		child = NULL; /* freed */
+		goto fail;
+	}
+	child = NULL; /* freed */
+
+	ret = ec_node_set_config(gen_node, config);
+	config = NULL; /* freed */
+	if (ret < 0)
+		goto fail;
 
 	return 0;
 
 fail:
+	ec_config_free(config);
 	ec_node_free(child);
 	return -1;
 }
@@ -163,7 +217,7 @@ struct ec_node *ec_node_once(const char *id, struct ec_node *child)
 	if (gen_node == NULL)
 		goto fail;
 
-	ec_node_once_set(gen_node, child);
+	ec_node_once_set_child(gen_node, child);
 	child = NULL;
 
 	return gen_node;
diff --git a/libecoli/ecoli_node_once.h b/libecoli/ecoli_node_once.h
index a610a83..690a10c 100644
--- a/libecoli/ecoli_node_once.h
+++ b/libecoli/ecoli_node_once.h
@@ -23,7 +23,7 @@
 /* on error, child is *not* freed */
 struct ec_node *ec_node_once(const char *id, struct ec_node *child);
 
-/* on error, child is *not* freed */
-int ec_node_once_set(struct ec_node *node, struct ec_node *child);
+/* on error, child is freed */
+int ec_node_once_set_child(struct ec_node *node, struct ec_node *child);
 
 #endif
-- 
2.20.1