From 69be662e90facac251ebeed6ddba3d2f485570d5 Mon Sep 17 00:00:00 2001
From: Olivier Matz <zer0@droids-corp.org>
Date: Mon, 12 Mar 2018 21:31:57 +0100
Subject: [PATCH] del -> unlink + const macro

---
 lib/ecoli_completed.c   |  4 ++--
 lib/ecoli_node.h        |  2 +-
 lib/ecoli_node_expr.h   |  2 --
 lib/ecoli_node_many.c   |  2 +-
 lib/ecoli_node_re_lex.c |  2 +-
 lib/ecoli_node_sh_lex.c |  4 ++--
 lib/ecoli_node_subset.c |  4 ++--
 lib/ecoli_parsed.c      | 24 ++++++++++++------------
 lib/ecoli_parsed.h      | 20 +++++++++++++++-----
 lib/main-readline.c     |  2 +-
 10 files changed, 37 insertions(+), 29 deletions(-)

diff --git a/lib/ecoli_completed.c b/lib/ecoli_completed.c
index 179ae45..a1dbe16 100644
--- a/lib/ecoli_completed.c
+++ b/lib/ecoli_completed.c
@@ -79,7 +79,7 @@ ec_node_complete_child(const struct ec_node *node,
 		return -ENOMEM;
 
 	if (cur_state != NULL)
-		ec_parsed_add_child(cur_state, child_state);
+		ec_parsed_link_child(cur_state, child_state);
 	completed->cur_state = child_state;
 	cur_group = completed->cur_group;
 	completed->cur_group = NULL;
@@ -89,7 +89,7 @@ ec_node_complete_child(const struct ec_node *node,
 
 	/* restore parent parse state */
 	if (cur_state != NULL) {
-		ec_parsed_del_child(cur_state, child_state);
+		ec_parsed_unlink_child(cur_state, child_state);
 		assert(!ec_parsed_has_child(child_state));
 	}
 	ec_parsed_free(child_state);
diff --git a/lib/ecoli_node.h b/lib/ecoli_node.h
index 1ed896f..c880324 100644
--- a/lib/ecoli_node.h
+++ b/lib/ecoli_node.h
@@ -137,7 +137,7 @@ struct ec_node {
  * code */
 struct ec_node *__ec_node(const struct ec_node_type *type, const char *id);
 
-/* create a_new node node */
+/* create a new node */
 struct ec_node *ec_node(const char *typename, const char *id);
 
 struct ec_node *ec_node_clone(struct ec_node *node);
diff --git a/lib/ecoli_node_expr.h b/lib/ecoli_node_expr.h
index 6e36957..7188f3f 100644
--- a/lib/ecoli_node_expr.h
+++ b/lib/ecoli_node_expr.h
@@ -7,8 +7,6 @@
 
 #include <ecoli_node.h>
 
-/* XXX remove the _new for all other nodes */
-
 /**
  * Callback function type for evaluating a variable
  *
diff --git a/lib/ecoli_node_many.c b/lib/ecoli_node_many.c
index ab0a0d3..7d38a89 100644
--- a/lib/ecoli_node_many.c
+++ b/lib/ecoli_node_many.c
@@ -60,7 +60,7 @@ static int ec_node_many_parse(const struct ec_node *gen_node,
 		/* it matches an empty strvec, no need to continue */
 		if (ret == 0) {
 			child_parsed = ec_parsed_get_last_child(state);
-			ec_parsed_del_child(state, child_parsed);
+			ec_parsed_unlink_child(state, child_parsed);
 			ec_parsed_free(child_parsed);
 			break;
 		}
diff --git a/lib/ecoli_node_re_lex.c b/lib/ecoli_node_re_lex.c
index 252ebfd..e0220e6 100644
--- a/lib/ecoli_node_re_lex.c
+++ b/lib/ecoli_node_re_lex.c
@@ -125,7 +125,7 @@ ec_node_re_lex_parse(const struct ec_node *gen_node,
 		ret = 1;
 	} else if (ret != EC_PARSED_NOMATCH) {
 		child_parsed = ec_parsed_get_last_child(state);
-		ec_parsed_del_child(state, child_parsed);
+		ec_parsed_unlink_child(state, child_parsed);
 		ec_parsed_free(child_parsed);
 		ret = EC_PARSED_NOMATCH;
 	}
diff --git a/lib/ecoli_node_sh_lex.c b/lib/ecoli_node_sh_lex.c
index 1ad151f..d5c86eb 100644
--- a/lib/ecoli_node_sh_lex.c
+++ b/lib/ecoli_node_sh_lex.c
@@ -245,7 +245,7 @@ ec_node_sh_lex_parse(const struct ec_node *gen_node,
 		ret = 1;
 	} else if (ret != EC_PARSED_NOMATCH) {
 		child_parsed = ec_parsed_get_last_child(state);
-		ec_parsed_del_child(state, child_parsed);
+		ec_parsed_unlink_child(state, child_parsed);
 		ec_parsed_free(child_parsed);
 		ret = EC_PARSED_NOMATCH;
 	}
@@ -272,7 +272,7 @@ ec_node_sh_lex_complete(const struct ec_node *gen_node,
 	struct ec_completed_item *item = NULL;
 	char *new_str = NULL;
 	const char *str;
-	char missing_quote;
+	char missing_quote = '\0';
 	int ret;
 
 	if (ec_strvec_len(strvec) != 1)
diff --git a/lib/ecoli_node_subset.c b/lib/ecoli_node_subset.c
index 2f6b9e5..3ec44dc 100644
--- a/lib/ecoli_node_subset.c
+++ b/lib/ecoli_node_subset.c
@@ -103,7 +103,7 @@ __ec_node_subset_parse(struct parse_result *out, struct ec_node **table,
 		/* replace the previous best result */
 		ec_parsed_free(best_parsed);
 		best_parsed = ec_parsed_get_last_child(state);
-		ec_parsed_del_child(state, best_parsed);
+		ec_parsed_unlink_child(state, best_parsed);
 
 		best_result.parsed_len = result.parsed_len + 1;
 		best_result.len = len + result.len;
@@ -114,7 +114,7 @@ __ec_node_subset_parse(struct parse_result *out, struct ec_node **table,
 	*out = best_result;
 	ec_free(child_table);
 	if (best_parsed != NULL)
-		ec_parsed_add_child(state, best_parsed);
+		ec_parsed_link_child(state, best_parsed);
 
 	return 0;
 
diff --git a/lib/ecoli_parsed.c b/lib/ecoli_parsed.c
index 035ec13..4816222 100644
--- a/lib/ecoli_parsed.c
+++ b/lib/ecoli_parsed.c
@@ -44,7 +44,7 @@ static int __ec_node_parse_child(const struct ec_node *node,
 		if (child == NULL)
 			return -ENOMEM;
 
-		ec_parsed_add_child(state, child);
+		ec_parsed_link_child(state, child);
 	} else {
 		child = state;
 	}
@@ -64,7 +64,7 @@ static int __ec_node_parse_child(const struct ec_node *node,
 
 free:
 	if (!is_root) {
-		ec_parsed_del_child(state, child);
+		ec_parsed_unlink_child(state, child);
 		ec_parsed_free(child);
 	}
 	return ret;
@@ -180,7 +180,7 @@ __ec_parsed_dup(const struct ec_parsed *root, const struct ec_parsed *ref,
 		dup_child = __ec_parsed_dup(child, ref, new_ref);
 		if (dup_child == NULL)
 			goto fail;
-		ec_parsed_add_child(dup, dup_child);
+		ec_parsed_link_child(dup, dup_child);
 	}
 
 	return dup;
@@ -190,9 +190,10 @@ fail:
 	return NULL;
 }
 
-struct ec_parsed *ec_parsed_dup(struct ec_parsed *parsed) //XXX const
+struct ec_parsed *ec_parsed_dup(const struct ec_parsed *parsed)
 {
-	struct ec_parsed *root, *dup_root, *dup = NULL;
+	const struct ec_parsed *root;
+	struct ec_parsed *dup_root, *dup = NULL;
 
 	root = ec_parsed_get_root(parsed);
 	dup_root = __ec_parsed_dup(root, parsed, &dup);
@@ -275,15 +276,14 @@ void ec_parsed_dump(FILE *out, const struct ec_parsed *parsed)
 	__ec_parsed_dump(out, parsed, 0);
 }
 
-void ec_parsed_add_child(struct ec_parsed *parsed,
+void ec_parsed_link_child(struct ec_parsed *parsed,
 	struct ec_parsed *child)
 {
 	TAILQ_INSERT_TAIL(&parsed->children, child, next);
 	child->parent = parsed;
 }
 
-// XXX we can remove the first arg ? parsed == child->parent ?
-void ec_parsed_del_child(struct ec_parsed *parsed, // XXX rename del in unlink?
+void ec_parsed_unlink_child(struct ec_parsed *parsed,
 	struct ec_parsed *child)
 {
 	TAILQ_REMOVE(&parsed->children, child, next);
@@ -317,16 +317,16 @@ const struct ec_node *ec_parsed_get_node(const struct ec_parsed *parsed)
 	return parsed->node;
 }
 
-void ec_parsed_del_last_child(struct ec_parsed *parsed) // rename in free
+void ec_parsed_del_last_child(struct ec_parsed *parsed)
 {
 	struct ec_parsed *child;
 
 	child = ec_parsed_get_last_child(parsed);
-	ec_parsed_del_child(parsed, child);
+	ec_parsed_unlink_child(parsed, child);
 	ec_parsed_free(child);
 }
 
-struct ec_parsed *ec_parsed_get_root(struct ec_parsed *parsed)
+struct ec_parsed *__ec_parsed_get_root(struct ec_parsed *parsed)
 {
 	if (parsed == NULL)
 		return NULL;
@@ -337,7 +337,7 @@ struct ec_parsed *ec_parsed_get_root(struct ec_parsed *parsed)
 	return parsed;
 }
 
-struct ec_parsed *ec_parsed_get_parent(struct ec_parsed *parsed)
+struct ec_parsed *ec_parsed_get_parent(const struct ec_parsed *parsed)
 {
 	if (parsed == NULL)
 		return NULL;
diff --git a/lib/ecoli_parsed.h b/lib/ecoli_parsed.h
index 735e4d5..9f7a698 100644
--- a/lib/ecoli_parsed.h
+++ b/lib/ecoli_parsed.h
@@ -48,7 +48,7 @@ void ec_parsed_free_children(struct ec_parsed *parsed);
  *
  *
  */
-struct ec_parsed *ec_parsed_dup(struct ec_parsed *parsed);
+struct ec_parsed *ec_parsed_dup(const struct ec_parsed *parsed);
 
 /**
  *
@@ -105,29 +105,39 @@ int ec_node_parse_child(const struct ec_node *node,
  *
  *
  */
-void ec_parsed_add_child(struct ec_parsed *parsed,
+void ec_parsed_link_child(struct ec_parsed *parsed,
 			struct ec_parsed *child);
 /**
  *
  *
  *
  */
-void ec_parsed_del_child(struct ec_parsed *parsed,
+void ec_parsed_unlink_child(struct ec_parsed *parsed,
 			struct ec_parsed *child);
 
+/* keep the const */
+#define ec_parsed_get_root(parsed) ({				\
+	const struct ec_parsed *p_ = parsed; /* check type */	\
+	struct ec_parsed *parsed_ = (struct ec_parsed *)parsed;	\
+	typeof(parsed) res_;					\
+	(void)p_;						\
+	res_ = __ec_parsed_get_root(parsed_);			\
+	res_;							\
+})
+
 /**
  *
  *
  *
  */
-struct ec_parsed *ec_parsed_get_root(struct ec_parsed *parsed);
+struct ec_parsed *__ec_parsed_get_root(struct ec_parsed *parsed);
 
 /**
  *
  *
  *
  */
-struct ec_parsed *ec_parsed_get_parent(struct ec_parsed *parsed);
+struct ec_parsed *ec_parsed_get_parent(const struct ec_parsed *parsed);
 
 /**
  * Get the first child of a tree.
diff --git a/lib/main-readline.c b/lib/main-readline.c
index 80e91c9..8b8a094 100644
--- a/lib/main-readline.c
+++ b/lib/main-readline.c
@@ -106,7 +106,7 @@ static char **my_attempted_completion(const char *text, int start, int end)
 static char *get_node_help(const struct ec_completed_item *item)
 {
 	const struct ec_completed_group *grp;
-	struct ec_parsed *state; // XXX keep const with macro
+	const struct ec_parsed *state;
 	const struct ec_node *node;
 	char *help = NULL;
 	const char *node_help = NULL;
-- 
2.39.5