From 378dd663a402fe196f2b56c6413eb3f623aecbbf Mon Sep 17 00:00:00 2001
From: Lexi Winter <lexi@le-fay.org>
Date: Tue, 1 Jul 2025 19:18:42 +0100
Subject: cli: refactoring

---
 nihil.cli/command_tree.cc | 169 ----------------------------------------------
 1 file changed, 169 deletions(-)
 delete mode 100644 nihil.cli/command_tree.cc

(limited to 'nihil.cli/command_tree.cc')

diff --git a/nihil.cli/command_tree.cc b/nihil.cli/command_tree.cc
deleted file mode 100644
index a77131a..0000000
--- a/nihil.cli/command_tree.cc
+++ /dev/null
@@ -1,169 +0,0 @@
-// This source code is released into the public domain.
-module nihil.cli;
-
-import nihil.std;
-
-namespace nihil {
-
-command_tree_node::command_tree_node()
-	: m_this_word("")
-	, m_command(std::make_shared<command_node>(command_node("")))
-{
-}
-
-command_tree_node::command_tree_node(command_tree_node *parent,
-				     std::string_view this_word)
-	: m_parent(parent)
-	, m_this_word(this_word)
-{
-}
-
-command_tree_node::command_tree_node(command_tree_node *parent,
-				     std::string_view this_word,
-				     std::shared_ptr<command_node> command)
-	: m_parent(parent)
-	, m_this_word(this_word)
-	, m_command(std::move(command))
-{
-}
-
-auto command_tree_node::get_child(this command_tree_node const &self,
-			     std::string_view child)
-	-> command_tree_node const *
-{
-	if (auto it = self.m_children.find(std::string(child));
-	    it != self.m_children.end())
-		return &it->second;
-
-	return nullptr;
-}
-
-auto command_tree_node::get_child(this command_tree_node &self,
-			     std::string_view child)
-	-> command_tree_node *
-{
-	if (auto it = self.m_children.find(std::string(child));
-	    it != self.m_children.end())
-		return &it->second;
-
-	return nullptr;
-}
-
-auto command_tree_node::get_or_create_child(this command_tree_node &self,
-					    std::string_view child)
-	-> command_tree_node *
-{
-	// Return the existing child, if there is one.
-	if (auto *ptr = self.get_child(child); ptr != nullptr)
-		return ptr;
-
-	// Insert a new child.
-	auto [it, ok] = self.m_children.emplace(
-				child,
-				command_tree_node(&self, child));
-
-	// Give the child a dummy command.
-	auto path = self.m_parent != nullptr
-		? std::format("{} {}", self.m_parent->path(), child)
-		: std::string(child);
-
-	it->second.m_command = std::make_shared<command_node>(path);
-
-	return &it->second;
-}
-
-auto command_tree_node::command(this command_tree_node const &self)
-	-> std::shared_ptr<command_node> const &
-{
-	return self.m_command;
-}
-
-auto command_tree_node::command(this command_tree_node &self,
-				std::shared_ptr<command_node> command)
-	-> void
-{
-	// TODO: Put this check back without tripping from the dummy command.
-	//if (self.m_command != nullptr)
-	//	throw std::logic_error("duplicate command");
-	self.m_command = std::move(command);
-}
-
-auto command_tree_node::print_commands(this command_tree_node const &self)
-	-> void
-{
-	auto prefix = std::string(self.path());
-
-	for (auto &&[name, node] : self.m_children) {
-		auto command = prefix.empty()
-			? name
-			: (prefix + ' ' + name);
-		std::print(std::cerr, "  {}\n", command);
-	}
-}
-
-auto command_tree_node::path(this command_tree_node const &self)
-	-> std::string_view
-{
-	return self.m_command->path();
-}
-
-auto command_tree::insert(this command_tree &self,
-	    std::vector<std::string_view> const &path,
-	    std::shared_ptr<command_node> command)
-	-> void
-{
-	auto *this_node = &self.m_root_node;
-
-	// Find the node for this key.
-	for (auto &&this_word : path)
-		this_node = this_node->get_or_create_child(this_word);
-
-	// Set the new value.
-	this_node->command(std::move(command));
-}
-
-auto command_tree::find(this command_tree const &self, int &argc, char **&argv)
-	-> command_tree_node const *
-{
-	auto const *this_node = &self.m_root_node;
-
-	// Iterate until we don't find a child command, then return that node.
-	while (argv[0] != nullptr) {
-		auto const *next_node = this_node->get_child(argv[0]);
-
-		if (next_node == nullptr)
-			return this_node;
-
-		this_node = next_node;
-
-		--argc;
-		++argv;
-	}
-
-	// We ran out of path without finding a valid command.  Return this
-	// node; the caller will notice the missing command.
-	return this_node;
-}
-
-auto build_command_tree() -> command_tree
-{
-	auto const &commands = get_registered_commands();
-	auto tree = command_tree();
-
-	for (auto &&command : commands) {
-		auto split_path = std::vector<std::string_view>(
-			std::from_range,
-			command->path()
-			| std::views::split(' ')
-			| std::views::transform([] (auto &&r) {
-				return std::string_view(r);
-			}));
-
-		// Throws std::logic_error on duplicates.
-		tree.insert(split_path, command);
-	}
-
-	return tree;
-}
-
-} // namespace nihil
-- 
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