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use std::{any::Any, fmt::Debug, sync::Arc};
use super::argument_builder::{ArgumentBuilder, ArgumentBuilderType};
use crate::{
arguments::ArgumentType,
exceptions::CommandSyntaxException,
string_reader::StringReader,
suggestion::{Suggestions, SuggestionsBuilder},
};
/// An argument node type. The `T` type parameter is the type of the argument,
/// which can be anything.
#[derive(Clone)]
pub struct Argument {
pub name: String,
parser: Arc<dyn ArgumentType + Send + Sync>,
}
impl Argument {
pub fn new(name: &str, parser: Arc<dyn ArgumentType + Send + Sync>) -> Self {
Self {
name: name.to_string(),
parser,
}
}
pub fn parse(&self, reader: &mut StringReader) -> Result<Arc<dyn Any>, CommandSyntaxException> {
self.parser.parse(reader)
}
pub fn list_suggestions(&self, builder: SuggestionsBuilder) -> Suggestions {
// TODO: custom suggestions
// https://github.com/Mojang/brigadier/blob/master/src/main/java/com/mojang/brigadier/tree/ArgumentCommandNode.java#L71
self.parser.list_suggestions(builder)
}
pub fn examples(&self) -> Vec<String> {
self.parser.examples()
}
}
impl From<Argument> for ArgumentBuilderType {
fn from(argument: Argument) -> Self {
Self::Argument(argument)
}
}
impl Debug for Argument {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("Argument")
.field("name", &self.name)
// .field("parser", &self.parser)
.finish()
}
}
/// Shortcut for creating a new argument builder node.
pub fn argument<S>(
name: &str,
parser: impl ArgumentType + Send + Sync + 'static,
) -> ArgumentBuilder<S> {
ArgumentBuilder::new(Argument::new(name, Arc::new(parser)).into())
}
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