nushell/src/context.rs

105 lines
2.7 KiB
Rust
Raw Normal View History

2019-06-22 05:43:37 +02:00
use crate::commands::command::{Sink, SinkCommandArgs};
use crate::parser::{
registry::{Args, CommandConfig, CommandRegistry},
Span,
};
2019-05-15 18:12:38 +02:00
use crate::prelude::*;
2019-05-16 02:21:46 +02:00
2019-05-26 08:54:41 +02:00
use indexmap::IndexMap;
2019-05-15 18:12:38 +02:00
use std::error::Error;
2019-05-22 09:12:03 +02:00
use std::sync::Arc;
2019-05-15 18:12:38 +02:00
2019-06-07 08:34:42 +02:00
#[derive(Clone)]
2019-05-15 18:12:38 +02:00
pub struct Context {
2019-05-26 08:54:41 +02:00
commands: IndexMap<String, Arc<dyn Command>>,
2019-06-07 08:34:42 +02:00
sinks: IndexMap<String, Arc<dyn Sink>>,
2019-05-24 06:34:43 +02:00
crate host: Arc<Mutex<dyn Host + Send>>,
2019-06-15 19:52:55 +02:00
crate env: Arc<Mutex<VecDeque<Environment>>>,
2019-05-15 18:12:38 +02:00
}
impl Context {
crate fn basic() -> Result<Context, Box<dyn Error>> {
2019-06-15 19:52:55 +02:00
let mut env = VecDeque::new();
env.push_back(Environment::basic()?);
2019-05-15 18:12:38 +02:00
Ok(Context {
2019-05-16 00:58:44 +02:00
commands: indexmap::IndexMap::new(),
2019-06-07 08:34:42 +02:00
sinks: indexmap::IndexMap::new(),
host: Arc::new(Mutex::new(crate::env::host::BasicHost)),
2019-06-15 19:52:55 +02:00
env: Arc::new(Mutex::new(env)),
2019-05-15 18:12:38 +02:00
})
}
2019-05-28 08:45:18 +02:00
pub fn add_commands(&mut self, commands: Vec<Arc<dyn Command>>) {
for command in commands {
self.commands.insert(command.name().to_string(), command);
2019-05-15 18:12:38 +02:00
}
}
2019-06-07 08:34:42 +02:00
pub fn add_sinks(&mut self, sinks: Vec<Arc<dyn Sink>>) {
for sink in sinks {
self.sinks.insert(sink.name().to_string(), sink);
}
}
crate fn has_sink(&self, name: &str) -> bool {
self.sinks.contains_key(name)
}
crate fn get_sink(&self, name: &str) -> Arc<dyn Sink> {
self.sinks.get(name).unwrap().clone()
}
crate fn run_sink(
&mut self,
command: Arc<dyn Sink>,
2019-06-08 00:35:07 +02:00
name_span: Option<Span>,
2019-06-07 08:34:42 +02:00
args: Args,
2019-07-08 18:44:53 +02:00
input: Vec<Spanned<Value>>,
2019-06-07 08:34:42 +02:00
) -> Result<(), ShellError> {
let command_args = SinkCommandArgs {
ctx: self.clone(),
2019-06-08 00:35:07 +02:00
name_span,
2019-06-22 05:43:37 +02:00
args,
2019-06-07 08:34:42 +02:00
input,
};
command.run(command_args)
}
2019-05-26 08:54:41 +02:00
pub fn clone_commands(&self) -> indexmap::IndexMap<String, Arc<dyn Command>> {
self.commands.clone()
}
2019-05-22 09:12:03 +02:00
crate fn has_command(&self, name: &str) -> bool {
2019-05-15 18:12:38 +02:00
self.commands.contains_key(name)
}
2019-05-22 09:12:03 +02:00
crate fn get_command(&self, name: &str) -> Arc<dyn Command> {
self.commands.get(name).unwrap().clone()
}
2019-05-16 02:21:46 +02:00
crate fn run_command(
2019-05-22 09:12:03 +02:00
&mut self,
command: Arc<dyn Command>,
2019-06-08 00:35:07 +02:00
name_span: Option<Span>,
args: Args,
input: InputStream,
) -> Result<OutputStream, ShellError> {
2019-05-16 02:21:46 +02:00
let command_args = CommandArgs {
host: self.host.clone(),
env: self.env.clone(),
2019-06-08 00:35:07 +02:00
name_span,
2019-06-22 05:43:37 +02:00
args,
2019-05-16 02:21:46 +02:00
input,
};
2019-05-22 09:12:03 +02:00
command.run(command_args)
2019-05-15 18:12:38 +02:00
}
}
2019-06-22 05:43:37 +02:00
impl CommandRegistry for Context {
fn get(&self, name: &str) -> Option<CommandConfig> {
self.commands.get(name).map(|c| c.config())
}
}