nushell/src/prelude.rs
2019-09-14 11:30:24 -05:00

116 lines
3.5 KiB
Rust

#[macro_export]
macro_rules! stream {
($($expr:expr),*) => {{
let mut v = VecDeque::new();
$(
v.push_back($expr);
)*
v
}}
}
#[macro_export]
macro_rules! trace_stream {
(target: $target:tt, $desc:tt = $expr:expr) => {{
if log::log_enabled!(target: $target, log::Level::Trace) {
use futures::stream::StreamExt;
let objects = $expr.values.inspect(|o| {
trace!(target: $target, "{} = {:#?}", $desc, o.debug());
});
$crate::stream::InputStream::from_stream(objects.boxed())
} else {
$expr
}
}};
}
#[macro_export]
macro_rules! trace_out_stream {
(target: $target:tt, source: $source:expr, $desc:tt = $expr:expr) => {{
if log::log_enabled!(target: $target, log::Level::Trace) {
use futures::stream::StreamExt;
let source = $source.clone();
let objects = $expr.values.inspect(move |o| {
trace!(target: $target, "{} = {}", $desc, o.debug(&source));
});
$crate::stream::OutputStream::new(objects)
} else {
$expr
}
}};
}
pub(crate) use crate::cli::MaybeOwned;
pub(crate) use crate::commands::command::{
CallInfo, CommandAction, CommandArgs, ReturnSuccess, ReturnValue, RunnableContext,
};
pub(crate) use crate::commands::PerItemCommand;
pub(crate) use crate::commands::RawCommandArgs;
pub(crate) use crate::context::CommandRegistry;
pub(crate) use crate::context::{Context, SpanSource};
pub(crate) use crate::data::base as value;
pub(crate) use crate::data::meta::{Tag, Tagged, TaggedItem};
pub(crate) use crate::data::types::ExtractType;
pub(crate) use crate::data::{Primitive, Value};
pub(crate) use crate::env::host::handle_unexpected;
pub(crate) use crate::env::Host;
pub(crate) use crate::errors::{CoerceInto, ShellError};
pub(crate) use crate::parser::hir::SyntaxShape;
pub(crate) use crate::parser::parse::parser::Number;
pub(crate) use crate::parser::registry::Signature;
pub(crate) use crate::shell::filesystem_shell::FilesystemShell;
pub(crate) use crate::shell::help_shell::HelpShell;
pub(crate) use crate::shell::shell_manager::ShellManager;
pub(crate) use crate::shell::value_shell::ValueShell;
pub(crate) use crate::stream::{InputStream, OutputStream};
pub(crate) use crate::traits::{HasTag, ToDebug};
pub(crate) use crate::Text;
pub(crate) use bigdecimal::BigDecimal;
pub(crate) use futures::stream::BoxStream;
pub(crate) use futures::{FutureExt, Stream, StreamExt};
pub(crate) use futures_async_stream::async_stream_block;
pub(crate) use num_bigint::BigInt;
pub(crate) use num_traits::cast::{FromPrimitive, ToPrimitive};
pub(crate) use num_traits::identities::Zero;
pub(crate) use serde::Deserialize;
pub(crate) use std::collections::VecDeque;
pub(crate) use std::future::Future;
pub(crate) use std::sync::{Arc, Mutex};
pub trait FromInputStream {
fn from_input_stream(self) -> OutputStream;
}
impl<T> FromInputStream for T
where
T: Stream<Item = Tagged<Value>> + Send + 'static,
{
fn from_input_stream(self) -> OutputStream {
OutputStream {
values: self.map(ReturnSuccess::value).boxed(),
}
}
}
pub trait ToOutputStream {
fn to_output_stream(self) -> OutputStream;
}
impl<T, U> ToOutputStream for T
where
T: Stream<Item = U> + Send + 'static,
U: Into<ReturnValue>,
{
fn to_output_stream(self) -> OutputStream {
OutputStream {
values: self.map(|item| item.into()).boxed(),
}
}
}