add some more stuff from brigadier

1 files changed, 61 insertions, 0 deletions

diff --git a/azalea-brigadier/src/tree/root_command_node.rs b/azalea-brigadier/src/tree/root_command_node.rs
index e69de29b..004ab6a8 100644
--- a/azalea-brigadier/src/tree/root_command_node.rs
+++ b/azalea-brigadier/src/tree/root_command_node.rs
@@ -0,0 +1,61 @@
+use std::fmt::{Display, Formatter};
+
+use crate::{
+    context::{command_context::CommandContext, command_context_builder::CommandContextBuilder},
+    exceptions::{
+        builtin_exceptions::BuiltInExceptions, command_syntax_exception::CommandSyntaxException,
+    },
+    string_reader::StringReader,
+    suggestion::{suggestions::Suggestions, suggestions_builder::SuggestionsBuilder},
+};
+
+use super::command_node::{BaseCommandNode, CommandNode};
+
+#[derive(Hash, PartialEq, Eq, Debug, Clone)]
+pub struct RootCommandNode<S> {
+    // Since Rust doesn't have extending, we put the struct this is extending as the "base" field
+    pub base: BaseCommandNode<S>,
+}
+
+impl<S> CommandNode<S> for RootCommandNode<S> {
+    fn name(&self) -> &str {
+        ""
+    }
+
+    fn parse(
+        &self,
+        reader: StringReader,
+        context_builder: CommandContextBuilder<S>,
+    ) -> Result<(), CommandSyntaxException> {
+    }
+
+    fn list_suggestions(
+        &self,
+        context: CommandContext<S>,
+        builder: SuggestionsBuilder,
+    ) -> Result<Suggestions, CommandSyntaxException> {
+        Suggestions::empty()
+    }
+
+    fn is_valid_input(&self, input: &str) -> bool {
+        false
+    }
+
+    fn usage_text(&self) -> &str {
+        ""
+    }
+
+    fn create_builder(&self) -> () {
+        panic!("Cannot convert root into a builder");
+    }
+
+    fn get_examples(&self) -> Vec<String> {
+        vec![]
+    }
+}
+
+impl Display for RootCommandNode<()> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "<root>")
+    }
+}