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Another batch of removing async_stream (#1979)

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* Another batch of removing async_stream

* Another batch of removing async_stream

* Another batch of removing async_stream
This commit is contained in:
Jonathan Turner 2020-06-13 15:01:44 -07:00 committed by GitHub
parent a042f407c1
commit 86b316e930
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
8 changed files with 312 additions and 291 deletions
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45
crates/nu-cli/src/commands/format.rs
View file

@ -37,7 +37,7 @@ impl WholeStreamCommand for Format {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
format_command(args, registry)
format_command(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -49,32 +49,45 @@ impl WholeStreamCommand for Format {
}
}
fn format_command(
async fn format_command(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let scope = args.call_info.scope.clone();
let (FormatArgs { pattern }, mut input) = args.process(&registry).await?;
let pattern_tag = pattern.tag.clone();
let registry = Arc::new(registry.clone());
let scope = Arc::new(args.call_info.scope.clone());
let (FormatArgs { pattern }, input) = args.process(&registry).await?;
let format_pattern = format(&pattern);
let commands = format_pattern;
let commands = Arc::new(format_pattern);
while let Some(value) = input.next().await {
Ok(input
.then(move |value| {
let mut output = String::new();
let commands = commands.clone();
let registry = registry.clone();
let scope = scope.clone();
for command in &commands {
async move {
for command in &*commands {
match command {
FormatCommand::Text(s) => {
output.push_str(&s);
}
FormatCommand::Column(c) => {
// FIXME: use the correct spans
let full_column_path = nu_parser::parse_full_column_path(&(c.to_string()).spanned(Span::unknown()), &registry);
let full_column_path = nu_parser::parse_full_column_path(
&(c.to_string()).spanned(Span::unknown()),
&*registry,
);
let result = evaluate_baseline_expr(&full_column_path.0, &registry, &value, &scope.vars, &scope.env).await;
let result = evaluate_baseline_expr(
&full_column_path.0,
&registry,
&value,
&scope.vars,
&scope.env,
)
.await;
if let Ok(c) = result {
output
@ -86,12 +99,10 @@ fn format_command(
}
}
yield ReturnSuccess::value(
UntaggedValue::string(output).into_untagged_value())
ReturnSuccess::value(UntaggedValue::string(output).into_untagged_value())
}
};
Ok(stream.to_output_stream())
})
.to_output_stream())
}
#[derive(Debug)]

23
crates/nu-cli/src/commands/from_ics.rs
View file

@ -28,13 +28,15 @@ impl WholeStreamCommand for FromIcs {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
from_ics(args, registry)
from_ics(args, registry).await
}
}
fn from_ics(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn from_ics(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let args = args.evaluate_once(&registry).await?;
let tag = args.name_tag();
let input = args.input;
@ -44,19 +46,22 @@ fn from_ics(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
let buf_reader = BufReader::new(input_bytes);
let parser = ical::IcalParser::new(buf_reader);
// TODO: it should be possible to make this a stream, but the some of the lifetime requirements make this tricky.
// Pre-computing for now
let mut output = vec![];
for calendar in parser {
match calendar {
Ok(c) => yield ReturnSuccess::value(calendar_to_value(c, tag.clone())),
Err(_) => yield Err(ShellError::labeled_error(
Ok(c) => output.push(ReturnSuccess::value(calendar_to_value(c, tag.clone()))),
Err(_) => output.push(Err(ShellError::labeled_error(
"Could not parse as .ics",
"input cannot be parsed as .ics",
tag.clone()
)),
tag.clone(),
))),
}
}
};
Ok(stream.to_output_stream())
Ok(futures::stream::iter(output).to_output_stream())
}
fn calendar_to_value(calendar: IcalCalendar, tag: Tag) -> Value {

36
crates/nu-cli/src/commands/get.rs
View file

@ -39,7 +39,7 @@ impl WholeStreamCommand for Get {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
get(args, registry)
get(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -192,21 +192,24 @@ pub fn get_column_path(path: &ColumnPath, obj: &Value) -> Result<Value, ShellErr
)
}
pub fn get(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
pub async fn get(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let (GetArgs { rest: mut fields }, mut input) = args.process(&registry).await?;
if fields.is_empty() {
let mut vec = input.drain_vec().await;
let vec = input.drain_vec().await;
let descs = nu_protocol::merge_descriptors(&vec);
for desc in descs {
yield ReturnSuccess::value(desc);
}
Ok(futures::stream::iter(descs.into_iter().map(ReturnSuccess::value)).to_output_stream())
} else {
let member = fields.remove(0);
trace!("get {:?} {:?}", member, fields);
while let Some(item) = input.next().await {
Ok(input
.map(move |item| {
let member = vec![member.clone()];
let column_paths = vec![&member, &fields]
@ -214,6 +217,7 @@ pub fn get(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream
.flatten()
.collect::<Vec<&ColumnPath>>();
let mut output = vec![];
for path in column_paths {
let res = get_column_path(&path, &item);
@ -224,25 +228,27 @@ pub fn get(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream
..
} => {
for item in rows {
yield ReturnSuccess::value(item.clone());
output.push(ReturnSuccess::value(item.clone()));
}
}
Value {
value: UntaggedValue::Primitive(Primitive::Nothing),
..
} => {}
other => yield ReturnSuccess::value(other.clone()),
other => output.push(ReturnSuccess::value(other.clone())),
},
Err(reason) => yield ReturnSuccess::value(
Err(reason) => output.push(ReturnSuccess::value(
UntaggedValue::Error(reason).into_untagged_value(),
),
)),
}
}
futures::stream::iter(output)
})
.flatten()
.to_output_stream())
}
}
};
Ok(stream.to_output_stream())
}
#[cfg(test)]
mod tests {

78
crates/nu-cli/src/commands/help.rs
View file

@ -36,67 +36,90 @@ impl WholeStreamCommand for Help {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
help(args, registry)
help(args, registry).await
}
}
fn help(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn help(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let name = args.call_info.name_tag.clone();
let stream = async_stream! {
let (HelpArgs { rest }, mut input) = args.process(&registry).await?;
if let Some(document) = rest.get(0) {
if document.item == "commands" {
let (HelpArgs { rest }, ..) = args.process(&registry).await?;
if !rest.is_empty() {
if rest[0].item == "commands" {
let mut sorted_names = registry.names();
sorted_names.sort();
for cmd in sorted_names {
Ok(
futures::stream::iter(sorted_names.into_iter().filter_map(move |cmd| {
// If it's a subcommand, don't list it during the commands list
if cmd.contains(' ') {
continue;
return None;
}
let mut short_desc = TaggedDictBuilder::new(name.clone());
let document_tag = document.tag.clone();
let document_tag = rest[0].tag.clone();
let value = command_dict(
registry.get_command(&cmd).ok_or_else(|| {
match registry.get_command(&cmd).ok_or_else(|| {
ShellError::labeled_error(
format!("Could not load {}", cmd),
"could not load command",
document_tag,
)
})?,
}) {
Ok(ok) => ok,
Err(err) => return Some(Err(err)),
},
name.clone(),
);
short_desc.insert_untagged("name", cmd);
short_desc.insert_untagged(
"description",
get_data_by_key(&value, "usage".spanned_unknown())
.ok_or_else(|| {
match match get_data_by_key(&value, "usage".spanned_unknown()).ok_or_else(
|| {
ShellError::labeled_error(
"Expected a usage key",
"expected a 'usage' key",
&value.tag,
)
})?
.as_string()?,
},
) {
Ok(ok) => ok,
Err(err) => return Some(Err(err)),
}
.as_string()
{
Ok(ok) => ok,
Err(err) => return Some(Err(err)),
},
);
yield ReturnSuccess::value(short_desc.into_value());
}
Some(ReturnSuccess::value(short_desc.into_value()))
}))
.to_output_stream(),
)
} else if rest.len() == 2 {
// Check for a subcommand
let command_name = format!("{} {}", rest[0].item, rest[1].item);
if let Some(command) = registry.get_command(&command_name) {
yield Ok(ReturnSuccess::Value(UntaggedValue::string(get_help(command.stream_command(), &registry)).into_value(Tag::unknown())));
}
} else if let Some(command) = registry.get_command(&document.item) {
yield Ok(ReturnSuccess::Value(UntaggedValue::string(get_help(command.stream_command(), &registry)).into_value(Tag::unknown())));
Ok(OutputStream::one(ReturnSuccess::value(
UntaggedValue::string(get_help(command.stream_command(), &registry))
.into_value(Tag::unknown()),
)))
} else {
yield Err(ShellError::labeled_error(
Ok(OutputStream::empty())
}
} else if let Some(command) = registry.get_command(&rest[0].item) {
Ok(OutputStream::one(ReturnSuccess::value(
UntaggedValue::string(get_help(command.stream_command(), &registry))
.into_value(Tag::unknown()),
)))
} else {
Err(ShellError::labeled_error(
"Can't find command (use 'help commands' for full list)",
"can't find command",
document.tag.span,
));
rest[0].tag.span,
))
}
} else {
let msg = r#"Welcome to Nushell.
@ -121,11 +144,10 @@ Get the processes on your system actively using CPU:
You can also learn more at https://www.nushell.sh/book/"#;
yield Ok(ReturnSuccess::Value(UntaggedValue::string(msg).into_value(Tag::unknown())));
Ok(OutputStream::one(ReturnSuccess::value(
UntaggedValue::string(msg).into_value(Tag::unknown()),
)))
}
};
Ok(stream.to_output_stream())
}
#[allow(clippy::cognitive_complexity)]

48
crates/nu-cli/src/commands/is_empty.rs
View file

@ -42,15 +42,19 @@ impl WholeStreamCommand for IsEmpty {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
is_empty(args, registry)
is_empty(args, registry).await
}
}
fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn is_empty(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let (IsEmptyArgs { rest }, mut input) = args.process(&registry).await?;
while let Some(value) = input.next().await {
let (IsEmptyArgs { rest }, input) = args.process(&registry).await?;
Ok(input
.map(move |value| {
let value_tag = value.tag();
let action = if rest.len() <= 2 {
@ -85,15 +89,14 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
};
match action {
IsEmptyFor::Value => yield Ok(ReturnSuccess::Value(
IsEmptyFor::Value => Ok(ReturnSuccess::Value(
UntaggedValue::boolean(value.is_empty()).into_value(value_tag),
)),
IsEmptyFor::RowWithFieldsAndFallback(fields, default) => {
let mut out = value;
for field in fields.iter() {
let val =
crate::commands::get::get_column_path(&field, &out)?;
let val = crate::commands::get::get_column_path(&field, &out)?;
let emptiness_value = match out {
obj
@ -125,11 +128,10 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
out = emptiness_value?;
}
yield Ok(ReturnSuccess::Value(out))
Ok(ReturnSuccess::Value(out))
}
IsEmptyFor::RowWithField(field) => {
let val =
crate::commands::get::get_column_path(&field, &value)?;
let val = crate::commands::get::get_column_path(&field, &value)?;
match &value {
obj
@ -143,18 +145,18 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
&field,
UntaggedValue::boolean(true).into_value(&value_tag),
) {
Some(v) => yield Ok(ReturnSuccess::Value(v)),
None => yield Err(ShellError::labeled_error(
Some(v) => Ok(ReturnSuccess::Value(v)),
None => Err(ShellError::labeled_error(
"empty? could not find place to check emptiness",
"column name",
&field.tag,
)),
}
} else {
yield Ok(ReturnSuccess::Value(value))
Ok(ReturnSuccess::Value(value))
}
}
_ => yield Err(ShellError::labeled_error(
_ => Err(ShellError::labeled_error(
"Unrecognized type in stream",
"original value",
&value_tag,
@ -162,8 +164,7 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
}
}
IsEmptyFor::RowWithFieldAndFallback(field, default) => {
let val =
crate::commands::get::get_column_path(&field, &value)?;
let val = crate::commands::get::get_column_path(&field, &value)?;
match &value {
obj
@ -174,18 +175,18 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
} => {
if val.is_empty() {
match obj.replace_data_at_column_path(&field, default) {
Some(v) => yield Ok(ReturnSuccess::Value(v)),
None => yield Err(ShellError::labeled_error(
Some(v) => Ok(ReturnSuccess::Value(v)),
None => Err(ShellError::labeled_error(
"empty? could not find place to check emptiness",
"column name",
&field.tag,
)),
}
} else {
yield Ok(ReturnSuccess::Value(value))
Ok(ReturnSuccess::Value(value))
}
}
_ => yield Err(ShellError::labeled_error(
_ => Err(ShellError::labeled_error(
"Unrecognized type in stream",
"original value",
&value_tag,
@ -193,9 +194,8 @@ fn is_empty(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStrea
}
}
}
}
};
Ok(stream.to_output_stream())
})
.to_output_stream())
}
#[cfg(test)]

32
crates/nu-cli/src/commands/plugin.rs
View file

@ -3,7 +3,7 @@ use crate::prelude::*;
use derive_new::new;
use log::trace;
use nu_errors::ShellError;
use nu_protocol::{ReturnSuccess, ReturnValue, Signature, UntaggedValue, Value};
use nu_protocol::{ReturnValue, Signature, Value};
use serde::{self, Deserialize, Serialize};
use std::io::prelude::*;
use std::io::BufReader;
@ -304,17 +304,16 @@ impl WholeStreamCommand for PluginSink {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
sink_plugin(self.path.clone(), args, registry)
sink_plugin(self.path.clone(), args, registry).await
}
}
pub fn sink_plugin(
pub async fn sink_plugin(
path: String,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let args = args.evaluate_once(&registry).await?;
let call_info = args.call_info.clone();
@ -327,26 +326,25 @@ pub fn sink_plugin(
let _ = writeln!(tmpfile, "{}", request_raw);
let _ = tmpfile.flush();
let mut child = std::process::Command::new(path)
.arg(tmpfile.path())
.spawn();
let child = std::process::Command::new(path).arg(tmpfile.path()).spawn();
if let Ok(mut child) = child {
let _ = child.wait();
// Needed for async_stream to type check
if false {
yield ReturnSuccess::value(UntaggedValue::nothing().into_untagged_value());
Ok(OutputStream::empty())
} else {
Err(ShellError::untagged_runtime_error(
"Could not create process for sink command",
))
}
} else {
yield Err(ShellError::untagged_runtime_error("Could not create process for sink command"));
Err(ShellError::untagged_runtime_error(
"Could not open file to send sink command message",
))
}
} else {
yield Err(ShellError::untagged_runtime_error("Could not open file to send sink command message"));
Err(ShellError::untagged_runtime_error(
"Could not create message to sink command",
))
}
} else {
yield Err(ShellError::untagged_runtime_error("Could not create message to sink command"));
}
};
Ok(OutputStream::new(stream))
}

66
crates/nu-cli/src/commands/select.rs
View file

@ -6,7 +6,6 @@ use nu_protocol::{
ColumnPath, PathMember, Primitive, ReturnSuccess, Signature, SyntaxShape, TaggedDictBuilder,
UnspannedPathMember, UntaggedValue, Value,
};
use nu_source::span_for_spanned_list;
use nu_value_ext::{as_string, get_data_by_column_path};
#[derive(Deserialize)]
@ -38,7 +37,7 @@ impl WholeStreamCommand for Select {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
select(args, registry)
select(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -57,18 +56,16 @@ impl WholeStreamCommand for Select {
}
}
fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let name = args.call_info.name_tag.clone();
let stream = async_stream! {
let (SelectArgs { rest: mut fields }, mut input) = args.process(&registry).await?;
if fields.is_empty() {
yield Err(ShellError::labeled_error(
return Err(ShellError::labeled_error(
"Select requires columns to select",
"needs parameter",
name,
));
return;
}
let member = fields.remove(0);
@ -79,33 +76,39 @@ fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream,
.flatten()
.cloned()
.collect::<Vec<ColumnPath>>();
let mut empty = true;
let mut bring_back: indexmap::IndexMap<String, Vec<Value>> = indexmap::IndexMap::new();
while let Some(value) = input.next().await {
for path in &column_paths {
let path_members_span = span_for_spanned_list(path.members().iter().map(|p| p.span));
let fetcher = get_data_by_column_path(&value, &path, Box::new(move |(obj_source, path_member_tried, error)| {
if let PathMember { unspanned: UnspannedPathMember::String(column), .. } = path_member_tried {
let fetcher = get_data_by_column_path(
&value,
&path,
Box::new(move |(obj_source, path_member_tried, error)| {
if let PathMember {
unspanned: UnspannedPathMember::String(column),
..
} = path_member_tried
{
return ShellError::labeled_error_with_secondary(
"No data to fetch.",
format!("Couldn't select column \"{}\"", column),
path_member_tried.span,
format!("How about exploring it with \"get\"? Check the input is appropriate originating from here"),
obj_source.tag.span)
"How about exploring it with \"get\"? Check the input is appropriate originating from here",
obj_source.tag.span);
}
error
}));
}),
);
let field = path.clone();
let key = as_string(&UntaggedValue::Primitive(Primitive::ColumnPath(field.clone())).into_untagged_value())?;
let key = as_string(
&UntaggedValue::Primitive(Primitive::ColumnPath(field.clone()))
.into_untagged_value(),
)?;
match fetcher {
Ok(results) => {
match results.value {
Ok(results) => match results.value {
UntaggedValue::Table(records) => {
for x in records {
let mut out = TaggedDictBuilder::new(name.clone());
@ -113,16 +116,14 @@ fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream,
let group = bring_back.entry(key.clone()).or_insert(vec![]);
group.push(out.into_value());
}
},
}
x => {
let mut out = TaggedDictBuilder::new(name.clone());
out.insert_untagged(&key, x.clone());
let group = bring_back.entry(key.clone()).or_insert(vec![]);
group.push(out.into_value());
}
}
}
},
Err(reason) => {
// At the moment, we can't add switches, named flags
// and the like while already using .rest since it
@ -133,8 +134,7 @@ fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream,
let strict: Option<bool> = None;
if strict.is_some() {
yield Err(reason);
return;
return Err(reason);
}
bring_back.entry(key.clone()).or_insert(vec![]);
@ -149,9 +149,9 @@ fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream,
max = max_column.len();
}
let keys = bring_back.keys().map(|x| x.clone()).collect::<Vec<String>>();
let keys = bring_back.keys().cloned().collect::<Vec<String>>();
for mut current in 0..max {
Ok(futures::stream::iter((0..max).map(move |current| {
let mut out = TaggedDictBuilder::new(name.clone());
for k in &keys {
@ -159,21 +159,17 @@ fn select(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream,
let subsets = bring_back.get(k);
match subsets {
Some(set) => {
match set.get(current) {
Some(set) => match set.get(current) {
Some(row) => out.insert_untagged(k, row.get_data(k).borrow().clone()),
None => out.insert_untagged(k, nothing.clone()),
}
}
},
None => out.insert_untagged(k, nothing.clone()),
}
}
yield ReturnSuccess::value(out.into_value());
}
};
Ok(stream.to_output_stream())
ReturnSuccess::value(out.into_value())
}))
.to_output_stream())
}
#[cfg(test)]

39
crates/nu-cli/src/commands/with_env.rs
View file

@ -2,7 +2,7 @@ use crate::commands::classified::block::run_block;
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{hir::Block, ReturnSuccess, Signature, SyntaxShape, Value};
use nu_protocol::{hir::Block, Signature, SyntaxShape, Value};
use nu_source::Tagged;
pub struct WithEnv;
@ -42,7 +42,7 @@ impl WholeStreamCommand for WithEnv {
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
with_env(args, registry)
with_env(args, registry).await
}
fn examples(&self) -> Vec<Example> {
@ -54,16 +54,15 @@ impl WholeStreamCommand for WithEnv {
}
}
fn with_env(raw_args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
async fn with_env(
raw_args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let stream = async_stream! {
let mut context = Context::from_raw(&raw_args, &registry);
let mut scope = raw_args
.call_info
.scope
.clone();
let (WithEnvArgs { variable, block }, mut input) = raw_args.process(&registry).await?;
let mut scope = raw_args.call_info.scope.clone();
let (WithEnvArgs { variable, block }, input) = raw_args.process(&registry).await?;
scope.env.insert(variable.0.item, variable.1.item);
@ -74,26 +73,10 @@ fn with_env(raw_args: CommandArgs, registry: &CommandRegistry) -> Result<OutputS
&scope.it,
&scope.vars,
&scope.env,
).await;
)
.await;
match result {
Ok(mut stream) => {
while let Some(result) = stream.next().await {
yield Ok(ReturnSuccess::Value(result));
}
let errors = context.get_errors();
if let Some(error) = errors.first() {
yield Err(error.clone());
}
}
Err(e) => {
yield Err(e);
}
}
};
Ok(stream.to_output_stream())
result.map(|x| x.to_output_stream())
}
#[cfg(test)]