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Merge branch 'main' of https://github.com/nushell/engine-q into plugins

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This commit is contained in:
Fernando Herrera 2021-10-28 07:12:40 +01:00
commit 51e48bee53
95 changed files with 2796 additions and 1607 deletions
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126
Cargo.lock generated
View file

@ -74,9 +74,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
[[package]]
name = "backtrace"
version = "0.3.61"
version = "0.3.62"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e7a905d892734eea339e896738c14b9afce22b5318f64b951e70bf3844419b01"
checksum = "091bcdf2da9950f96aa522681ce805e6857f6ca8df73833d35736ab2dc78e152"
dependencies = [
"addr2line",
"cc",
@ -93,6 +93,15 @@ version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitmaps"
version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "031043d04099746d8db04daf1fa424b2bc8bd69d92b25962dcde24da39ab64a2"
dependencies = [
"typenum",
]
[[package]]
name = "bstr"
version = "0.2.17"
@ -106,9 +115,9 @@ dependencies = [
[[package]]
name = "byte-unit"
version = "4.0.12"
version = "4.0.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "063197e6eb4b775b64160dedde7a0986bb2836cce140e9492e9e96f28e18bcd8"
checksum = "956ffc5b0ec7d7a6949e3f21fd63ba5af4cffdc2ba1e0b7bf62b481458c4ae7f"
dependencies = [
"utf8-width",
]
@ -270,6 +279,16 @@ dependencies = [
"syn",
]
[[package]]
name = "ctrlc"
version = "3.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a19c6cedffdc8c03a3346d723eb20bd85a13362bb96dc2ac000842c6381ec7bf"
dependencies = [
"nix",
"winapi",
]
[[package]]
name = "dialoguer"
version = "0.9.0"
@ -345,6 +364,7 @@ version = "0.1.0"
dependencies = [
"assert_cmd",
"crossterm",
"ctrlc",
"dialoguer",
"miette",
"nu-cli",
@ -394,10 +414,24 @@ dependencies = [
]
[[package]]
name = "instant"
version = "0.1.11"
name = "im"
version = "15.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "716d3d89f35ac6a34fd0eed635395f4c3b76fa889338a4632e5231a8684216bd"
checksum = "111c1983f3c5bb72732df25cddacee9b546d08325fb584b5ebd38148be7b0246"
dependencies = [
"bitmaps",
"rand_core 0.5.1",
"rand_xoshiro",
"sized-chunks",
"typenum",
"version_check",
]
[[package]]
name = "instant"
version = "0.1.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
dependencies = [
"cfg-if",
]
@ -431,9 +465,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
[[package]]
name = "libc"
version = "0.2.103"
version = "0.2.105"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dd8f7255a17a627354f321ef0055d63b898c6fb27eff628af4d1b66b7331edf6"
checksum = "869d572136620d55835903746bcb5cdc54cb2851fd0aeec53220b4bb65ef3013"
[[package]]
name = "linked-hash-map"
@ -530,9 +564,9 @@ dependencies = [
[[package]]
name = "mio"
version = "0.7.13"
version = "0.7.14"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8c2bdb6314ec10835cd3293dd268473a835c02b7b352e788be788b3c6ca6bb16"
checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
dependencies = [
"libc",
"log",
@ -550,6 +584,19 @@ dependencies = [
"winapi",
]
[[package]]
name = "nix"
version = "0.23.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f305c2c2e4c39a82f7bf0bf65fb557f9070ce06781d4f2454295cc34b1c43188"
dependencies = [
"bitflags",
"cc",
"cfg-if",
"libc",
"memoffset",
]
[[package]]
name = "ntapi"
version = "0.3.6"
@ -601,6 +648,7 @@ dependencies = [
"nu-protocol",
"nu-table",
"nu-term-grid",
"rayon",
"sysinfo",
"terminal_size",
"thiserror",
@ -665,6 +713,7 @@ dependencies = [
"byte-unit",
"chrono",
"chrono-humanize",
"im",
"miette",
"serde",
"thiserror",
@ -718,9 +767,9 @@ dependencies = [
[[package]]
name = "object"
version = "0.26.2"
version = "0.27.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "39f37e50073ccad23b6d09bcb5b263f4e76d3bb6038e4a3c08e52162ffa8abc2"
checksum = "67ac1d3f9a1d3616fd9a60c8d74296f22406a238b6a72f5cc1e6f314df4ffbf9"
dependencies = [
"memchr",
]
@ -779,9 +828,9 @@ dependencies = [
[[package]]
name = "ppv-lite86"
version = "0.2.14"
version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c3ca011bd0129ff4ae15cd04c4eef202cadf6c51c21e47aba319b4e0501db741"
checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
[[package]]
name = "predicates"
@ -848,7 +897,7 @@ checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
dependencies = [
"libc",
"rand_chacha",
"rand_core",
"rand_core 0.6.3",
"rand_hc",
]
@ -859,9 +908,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
dependencies = [
"ppv-lite86",
"rand_core",
"rand_core 0.6.3",
]
[[package]]
name = "rand_core"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
[[package]]
name = "rand_core"
version = "0.6.3"
@ -877,7 +932,16 @@ version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
dependencies = [
"rand_core",
"rand_core 0.6.3",
]
[[package]]
name = "rand_xoshiro"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a9fcdd2e881d02f1d9390ae47ad8e5696a9e4be7b547a1da2afbc61973217004"
dependencies = [
"rand_core 0.5.1",
]
[[package]]
@ -1057,6 +1121,16 @@ dependencies = [
"libc",
]
[[package]]
name = "sized-chunks"
version = "0.6.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "16d69225bde7a69b235da73377861095455d298f2b970996eec25ddbb42b3d1e"
dependencies = [
"bitmaps",
"typenum",
]
[[package]]
name = "smallvec"
version = "1.7.0"
@ -1168,9 +1242,9 @@ dependencies = [
[[package]]
name = "termtree"
version = "0.2.1"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "78fbf2dd23e79c28ccfa2472d3e6b3b189866ffef1aeb91f17c2d968b6586378"
checksum = "76565a2f8df1d2170b5c365aa39d0623fd93fec20545edde299233cea82d0f16"
[[package]]
name = "textwrap"
@ -1223,6 +1297,12 @@ dependencies = [
"winapi",
]
[[package]]
name = "typenum"
version = "1.14.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b63708a265f51345575b27fe43f9500ad611579e764c79edbc2037b1121959ec"
[[package]]
name = "unicode-linebreak"
version = "0.1.2"
@ -1262,6 +1342,12 @@ version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "936e4b492acfd135421d8dca4b1aa80a7bfc26e702ef3af710e0752684df5372"
[[package]]
name = "version_check"
version = "0.9.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
[[package]]
name = "vte"
version = "0.10.1"

1
Cargo.toml
View file

@ -29,6 +29,7 @@ nu-protocol = { path = "./crates/nu-protocol" }
nu-table = { path = "./crates/nu-table" }
nu-term-grid = { path = "./crates/nu-term-grid" }
miette = "3.0.0"
ctrlc = "3.2.1"
# mimalloc = { version = "*", default-features = false }
[dev-dependencies]

3
README.md
View file

@ -3,3 +3,6 @@
Engine-q is an experimental project to replace the core functionality in Nushell (parser, engine, protocol). It's still in an alpha state, and there is still a lot to do: please see TODO.md
If you'd like to help out, come join us on the [discord](https://discord.gg/NtAbbGn) or propose some work in an issue or PR draft. We're currently looking to begin porting Nushell commands to engine-q.
If you are interested in porting a command from Nushell to engine-q you are welcome to
[comment on this issue 242](https://github.com/nushell/engine-q/issues/242) with the command name you would like to port.

15
TODO.md
View file

@ -30,13 +30,20 @@
- [x] Handling rows with missing columns during a cell path
- [x] finish operator type-checking
- [x] Config file loading
- [ ] Input/output types
- [x] block variable captures
- [x] improved history and config paths
- [x] ctrl-c support
- [ ] Support for `$in`
- [ ] ctrl-c support
- [ ] operator overflow
- [ ] Overlays (replacement for `autoenv`)
- [ ] shells
- [ ] plugins
- [ ] dataframes
## Post-nushell merge:
- [ ] Overlays (replacement for `autoenv`), adding modules to shells
- [ ] Input/output types
- [ ] let [first, rest] = [1, 2, 3] (design question: how do you pattern match a table?)
## Maybe:
- [ ] default param values?
- [ ] Unary not?
- [ ] let [first, rest] = [1, 2, 3] (design question: how do you pattern match a table?)

27
crates/nu-cli/src/completions.rs
View file

@ -1,29 +1,27 @@
use std::{cell::RefCell, rc::Rc};
use nu_engine::eval_block;
use nu_parser::{flatten_block, parse};
use nu_protocol::{
engine::{EngineState, EvaluationContext, Stack, StateWorkingSet},
Value,
engine::{EngineState, Stack, StateWorkingSet},
PipelineData,
};
use reedline::Completer;
const SEP: char = std::path::MAIN_SEPARATOR;
#[derive(Clone)]
pub struct NuCompleter {
engine_state: Rc<RefCell<EngineState>>,
engine_state: EngineState,
}
impl NuCompleter {
pub fn new(engine_state: Rc<RefCell<EngineState>>) -> Self {
pub fn new(engine_state: EngineState) -> Self {
Self { engine_state }
}
}
impl Completer for NuCompleter {
fn complete(&self, line: &str, pos: usize) -> Vec<(reedline::Span, String)> {
let engine_state = self.engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(&self.engine_state);
let offset = working_set.next_span_start();
let pos = offset + pos;
let (output, _err) = parse(&mut working_set, Some("completer"), line.as_bytes(), false);
@ -49,7 +47,7 @@ impl Completer for NuCompleter {
}
}
}
for scope in &engine_state.scope {
for scope in &self.engine_state.scope {
for v in &scope.vars {
if v.0.starts_with(prefix) {
output.push((
@ -72,14 +70,13 @@ impl Completer for NuCompleter {
let (block, ..) =
parse(&mut working_set, None, custom_completion.as_bytes(), false);
let context = EvaluationContext {
engine_state: self.engine_state.clone(),
stack: Stack::default(),
};
let result = eval_block(&context, &block, Value::nothing());
let mut stack = Stack::default();
let result =
eval_block(&self.engine_state, &mut stack, &block, PipelineData::new());
let v: Vec<_> = match result {
Ok(Value::List { vals, .. }) => vals
Ok(pd) => pd
.into_iter()
.map(move |x| {
let s = x.as_string().expect(

8
crates/nu-cli/src/syntax_highlight.rs
View file

@ -2,21 +2,19 @@ use nu_ansi_term::Style;
use nu_parser::{flatten_block, parse, FlatShape};
use nu_protocol::engine::{EngineState, StateWorkingSet};
use reedline::{Highlighter, StyledText};
use std::{cell::RefCell, rc::Rc};
pub struct NuHighlighter {
pub engine_state: Rc<RefCell<EngineState>>,
pub engine_state: EngineState,
}
impl Highlighter for NuHighlighter {
fn highlight(&self, line: &str) -> StyledText {
let (shapes, global_span_offset) = {
let engine_state = self.engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(&self.engine_state);
let (block, _) = parse(&mut working_set, None, line.as_bytes(), false);
let shapes = flatten_block(&working_set, &block);
(shapes, engine_state.next_span_start())
(shapes, self.engine_state.next_span_start())
};
let mut output = StyledText::default();

7
crates/nu-cli/src/validation.rs
View file

@ -1,17 +1,14 @@
use std::{cell::RefCell, rc::Rc};
use nu_parser::{parse, ParseError};
use nu_protocol::engine::{EngineState, StateWorkingSet};
use reedline::{ValidationResult, Validator};
pub struct NuValidator {
pub engine_state: Rc<RefCell<EngineState>>,
pub engine_state: EngineState,
}
impl Validator for NuValidator {
fn validate(&self, line: &str) -> ValidationResult {
let engine_state = self.engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(&self.engine_state);
let (_, err) = parse(&mut working_set, None, line.as_bytes(), false);
if matches!(err, Some(ParseError::UnexpectedEof(..))) {

1
crates/nu-command/Cargo.toml
View file

@ -27,6 +27,7 @@ terminal_size = "0.1.17"
lscolors = { version = "0.8.0", features = ["crossterm"] }
bytesize = "1.1.0"
dialoguer = "0.9.0"
rayon = "1.5.1"
[features]
trash-support = ["trash"]

51
crates/nu-command/src/conversions/into/binary.rs
View file

@ -1,9 +1,10 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, ShellError, Signature, Span, SyntaxShape, Value,
engine::{Command, EngineState, Stack},
Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -25,11 +26,12 @@ impl Command for SubCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
into_binary(context, call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
into_binary(engine_state, call, input)
}
fn examples(&self) -> Vec<Example> {
@ -84,28 +86,31 @@ impl Command for SubCommand {
}
fn into_binary(
_context: &EvaluationContext,
engine_state: &EngineState,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
// let column_paths: Vec<CellPath> = call.rest(context, 0)?;
input.map(head, move |v| {
action(v, head)
// FIXME: Add back in cell_path support
// if column_paths.is_empty() {
// action(v, head)
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret =
// ret.swap_data_by_cell_path(path, Box::new(move |old| action(old, old.tag())))?;
// }
input.map(
move |v| {
action(v, head)
// FIXME: Add back in cell_path support
// if column_paths.is_empty() {
// action(v, head)
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret =
// ret.swap_data_by_cell_path(path, Box::new(move |old| action(old, old.tag())))?;
// }
// Ok(ret)
// }
})
// Ok(ret)
// }
},
engine_state.ctrlc.clone(),
)
}
fn int_to_endian(n: i64) -> Vec<u8> {

17
crates/nu-command/src/conversions/into/command.rs
View file

@ -1,10 +1,11 @@
use nu_engine::get_full_help;
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Signature, Value,
engine::{Command, EngineState, Stack},
IntoPipelineData, PipelineData, Signature, Value,
};
#[derive(Clone)]
pub struct Into;
impl Command for Into {
@ -22,14 +23,16 @@ impl Command for Into {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(Value::String {
val: get_full_help(&Into.signature(), &[], context),
val: get_full_help(&Into.signature(), &[], engine_state),
span: call.head,
})
}
.into_pipeline_data())
}
}

55
crates/nu-command/src/conversions/into/filesize.rs
View file

@ -1,9 +1,10 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, ShellError, Signature, Span, SyntaxShape, Value,
engine::{Command, EngineState, Stack},
Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -25,11 +26,12 @@ impl Command for SubCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
into_filesize(context, call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
into_filesize(engine_state, call, input)
}
fn examples(&self) -> Vec<Example> {
@ -112,31 +114,34 @@ impl Command for SubCommand {
}
fn into_filesize(
_context: &EvaluationContext,
engine_state: &EngineState,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
// let call_paths: Vec<ColumnPath> = args.rest(0)?;
input.map(head, move |v| {
action(v, head)
input.map(
move |v| {
action(v, head)
// FIXME: Add back cell_path support
// if column_paths.is_empty() {
// action(&v, v.tag())
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret = ret.swap_data_by_column_path(
// path,
// Box::new(move |old| action(old, old.tag())),
// )?;
// }
// FIXME: Add back cell_path support
// if column_paths.is_empty() {
// action(&v, v.tag())
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret = ret.swap_data_by_column_path(
// path,
// Box::new(move |old| action(old, old.tag())),
// )?;
// }
// Ok(ret)
// }
})
// Ok(ret)
// }
},
engine_state.ctrlc.clone(),
)
}
pub fn action(input: Value, span: Span) -> Value {

57
crates/nu-command/src/conversions/into/int.rs
View file

@ -1,9 +1,10 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, IntoValueStream, ShellError, Signature, Span, SyntaxShape, Value,
engine::{Command, EngineState, Stack},
Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -25,11 +26,12 @@ impl Command for SubCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
into_int(context, call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
into_int(engine_state, call, input)
}
fn examples(&self) -> Vec<Example> {
@ -78,10 +80,8 @@ impl Command for SubCommand {
Example {
description: "Convert bool to integer",
example: "[$false, $true] | into int",
result: Some(Value::Stream {
stream: vec![Value::test_int(0), Value::test_int(1)]
.into_iter()
.into_value_stream(),
result: Some(Value::List {
vals: vec![Value::test_int(0), Value::test_int(1)],
span: Span::unknown(),
}),
},
@ -90,28 +90,31 @@ impl Command for SubCommand {
}
fn into_int(
_context: &EvaluationContext,
engine_state: &EngineState,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
// let column_paths: Vec<CellPath> = call.rest(context, 0)?;
input.map(head, move |v| {
action(v, head)
// FIXME: Add back cell_path support
// if column_paths.is_empty() {
// action(&v, v.tag())
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret = ret
// .swap_data_by_column_path(path, Box::new(move |old| action(old, old.tag())))?;
// }
input.map(
move |v| {
action(v, head)
// FIXME: Add back cell_path support
// if column_paths.is_empty() {
// action(&v, v.tag())
// } else {
// let mut ret = v;
// for path in &column_paths {
// ret = ret
// .swap_data_by_column_path(path, Box::new(move |old| action(old, old.tag())))?;
// }
// Ok(ret)
// }
})
// Ok(ret)
// }
},
engine_state.ctrlc.clone(),
)
}
pub fn action(input: Value, span: Span) -> Value {

16
crates/nu-command/src/core_commands/alias.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Alias;
impl Command for Alias {
@ -25,10 +26,11 @@ impl Command for Alias {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

16
crates/nu-command/src/core_commands/def.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Def;
impl Command for Def {
@ -26,10 +27,11 @@ impl Command for Def {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

23
crates/nu-command/src/core_commands/do_.rs
View file

@ -1,8 +1,9 @@
use nu_engine::{eval_block, CallExt};
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape, Value};
#[derive(Clone)]
pub struct Do;
impl Command for Do {
@ -27,19 +28,19 @@ impl Command for Do {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let block_id = call.positional[0]
.as_block()
.expect("internal error: expected block");
let rest: Vec<Value> = call.rest(context, 1)?;
let rest: Vec<Value> = call.rest(engine_state, stack, 1)?;
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
let mut stack = stack.collect_captures(&block.captures);
let params: Vec<_> = block
.signature
@ -50,7 +51,7 @@ impl Command for Do {
for param in params.iter().zip(&rest) {
if let Some(var_id) = param.0.var_id {
state.add_var(var_id, param.1.clone())
stack.add_var(var_id, param.1.clone())
}
}
@ -68,7 +69,7 @@ impl Command for Do {
call.head
};
state.add_var(
stack.add_var(
param
.var_id
.expect("Internal error: rest positional parameter lacks var_id"),
@ -79,6 +80,6 @@ impl Command for Do {
)
}
}
eval_block(&state, block, input)
eval_block(engine_state, &mut stack, block, input)
}
}

16
crates/nu-command/src/core_commands/export_def.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct ExportDef;
impl Command for ExportDef {
@ -26,10 +27,11 @@ impl Command for ExportDef {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

59
crates/nu-command/src/core_commands/for_.rs
View file

@ -1,8 +1,11 @@
use nu_engine::{eval_block, eval_expression};
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, Signature, Span, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, PipelineData, Signature, Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct For;
impl Command for For {
@ -36,10 +39,11 @@ impl Command for For {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let var_id = call.positional[0]
.as_var()
.expect("internal error: missing variable");
@ -47,27 +51,48 @@ impl Command for For {
let keyword_expr = call.positional[1]
.as_keyword()
.expect("internal error: missing keyword");
let values = eval_expression(context, keyword_expr)?;
let values = eval_expression(engine_state, stack, keyword_expr)?;
let block = call.positional[2]
let block_id = call.positional[2]
.as_block()
.expect("internal error: expected block");
let context = context.clone();
let ctrlc = engine_state.ctrlc.clone();
let engine_state = engine_state.clone();
let block = engine_state.get_block(block_id).clone();
let mut stack = stack.collect_captures(&block.captures);
values.map(call.head, move |x| {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block);
match values {
Value::List { vals, .. } => Ok(vals
.into_iter()
.map(move |x| {
stack.add_var(var_id, x);
let state = context.enter_scope();
//let block = engine_state.get_block(block_id);
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(pipeline_data) => pipeline_data.into_value(),
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(ctrlc)),
Value::Range { val, .. } => Ok(val
.into_range_iter()?
.map(move |x| {
stack.add_var(var_id, x);
state.add_var(var_id, x);
//let block = engine_state.get_block(block_id);
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(pipeline_data) => pipeline_data.into_value(),
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(ctrlc)),
x => {
stack.add_var(var_id, x);
match eval_block(&state, block, Value::nothing()) {
Ok(value) => value,
Err(error) => Value::Error { error },
eval_block(&engine_state, &mut stack, &block, PipelineData::new())
}
})
}
}
fn examples(&self) -> Vec<Example> {

49
crates/nu-command/src/core_commands/help.rs
View file

@ -1,11 +1,13 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
span, Example, ShellError, Signature, Spanned, SyntaxShape, Value,
engine::{Command, EngineState, Stack},
span, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, ShellError,
Signature, Spanned, SyntaxShape, Value,
};
use nu_engine::{get_full_help, CallExt};
#[derive(Clone)]
pub struct Help;
impl Command for Help {
@ -34,11 +36,12 @@ impl Command for Help {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<Value, ShellError> {
help(context, call)
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
help(engine_state, stack, call)
}
fn examples(&self) -> Vec<Example> {
@ -72,12 +75,16 @@ impl Command for Help {
}
}
fn help(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
fn help(
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
) -> Result<PipelineData, ShellError> {
let head = call.head;
let find: Option<Spanned<String>> = call.get_flag(context, "find")?;
let rest: Vec<Spanned<String>> = call.rest(context, 0)?;
let find: Option<Spanned<String>> = call.get_flag(engine_state, stack, "find")?;
let rest: Vec<Spanned<String>> = call.rest(engine_state, stack, 0)?;
let full_commands = context.get_signatures_with_examples();
let full_commands = engine_state.get_signatures_with_examples();
if let Some(f) = find {
let search_string = f.item;
@ -114,10 +121,9 @@ fn help(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
}
}
return Ok(Value::List {
vals: found_cmds_vec,
span: head,
});
return Ok(found_cmds_vec
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()));
}
if !rest.is_empty() {
@ -151,10 +157,9 @@ fn help(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
});
}
Ok(Value::List {
vals: found_cmds_vec,
span: head,
})
Ok(found_cmds_vec
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
} else {
let mut name = String::new();
let mut output = String::new();
@ -168,7 +173,7 @@ fn help(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
for cmd in full_commands {
if cmd.0.name == name {
let help = get_full_help(&cmd.0, &cmd.1, context);
let help = get_full_help(&cmd.0, &cmd.1, engine_state);
output.push_str(&help);
}
}
@ -177,7 +182,8 @@ fn help(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
Ok(Value::String {
val: output,
span: call.head,
})
}
.into_pipeline_data())
} else {
Err(ShellError::CommandNotFound(span(&[
rest[0].span,
@ -355,7 +361,8 @@ You can also learn more at https://www.nushell.sh/book/"#;
Ok(Value::String {
val: msg.into(),
span: head,
})
}
.into_pipeline_data())
}
}

16
crates/nu-command/src/core_commands/hide.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Hide;
impl Command for Hide {
@ -19,10 +20,11 @@ impl Command for Hide {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

33
crates/nu-command/src/core_commands/if_.rs
View file

@ -1,8 +1,9 @@
use nu_engine::{eval_block, eval_expression};
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, ShellError, Signature, SyntaxShape, Value};
#[derive(Clone)]
pub struct If;
impl Command for If {
@ -27,38 +28,40 @@ impl Command for If {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let cond = &call.positional[0];
let then_block = call.positional[1]
.as_block()
.expect("internal error: expected block");
let else_case = call.positional.get(2);
let result = eval_expression(context, cond)?;
let result = eval_expression(engine_state, stack, cond)?;
match result {
Value::Bool { val, span } => {
let engine_state = context.engine_state.borrow();
Value::Bool { val, .. } => {
if val {
let block = engine_state.get_block(then_block);
let state = context.enter_scope();
eval_block(&state, block, input)
let mut stack = stack.collect_captures(&block.captures);
eval_block(engine_state, &mut stack, block, input)
} else if let Some(else_case) = else_case {
if let Some(else_expr) = else_case.as_keyword() {
if let Some(block_id) = else_expr.as_block() {
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
eval_block(&state, block, input)
let mut stack = stack.collect_captures(&block.captures);
eval_block(engine_state, &mut stack, block, input)
} else {
eval_expression(context, else_expr)
eval_expression(engine_state, stack, else_expr)
.map(|x| x.into_pipeline_data())
}
} else {
eval_expression(context, else_case)
eval_expression(engine_state, stack, else_case)
.map(|x| x.into_pipeline_data())
}
} else {
Ok(Value::Nothing { span })
Ok(PipelineData::new())
}
}
_ => Err(ShellError::CantConvert("bool".into(), result.span()?)),

20
crates/nu-command/src/core_commands/let_.rs
View file

@ -1,8 +1,9 @@
use nu_engine::eval_expression;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Let;
impl Command for Let {
@ -26,10 +27,11 @@ impl Command for Let {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let var_id = call.positional[0]
.as_var()
.expect("internal error: missing variable");
@ -38,13 +40,11 @@ impl Command for Let {
.as_keyword()
.expect("internal error: missing keyword");
let rhs = eval_expression(context, keyword_expr)?;
let rhs = eval_expression(engine_state, stack, keyword_expr)?;
//println!("Adding: {:?} to {}", rhs, var_id);
context.add_var(var_id, rhs);
Ok(Value::Nothing {
span: call.positional[0].span,
})
stack.add_var(var_id, rhs);
Ok(PipelineData::new())
}
}

16
crates/nu-command/src/core_commands/module.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Module;
impl Command for Module {
@ -25,10 +26,11 @@ impl Command for Module {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

22
crates/nu-command/src/core_commands/source.rs
View file

@ -1,9 +1,10 @@
use nu_engine::{eval_block, CallExt};
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, ShellError, Signature, SyntaxShape};
/// Source a file for environment variables.
#[derive(Clone)]
pub struct Source;
impl Command for Source {
@ -25,19 +26,16 @@ impl Command for Source {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<Value, ShellError> {
input: PipelineData,
) -> Result<PipelineData, ShellError> {
// Note: this hidden positional is the block_id that corresponded to the 0th position
// it is put here by the parser
let block_id: i64 = call.req(context, 1)?;
let block_id: i64 = call.req(engine_state, stack, 1)?;
let block = context
.engine_state
.borrow()
.get_block(block_id as usize)
.clone();
eval_block(context, &block, input)
let block = engine_state.get_block(block_id as usize).clone();
eval_block(engine_state, stack, &block, input)
}
}

16
crates/nu-command/src/core_commands/use_.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Use;
impl Command for Use {
@ -19,10 +20,11 @@ impl Command for Use {
fn run(
&self,
_context: &EvaluationContext,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
Ok(Value::Nothing { span: call.head })
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(PipelineData::new())
}
}

17
crates/nu-command/src/default_context.rs
View file

@ -1,5 +1,3 @@
use std::{cell::RefCell, rc::Rc};
use nu_protocol::{
engine::{EngineState, StateWorkingSet},
Signature,
@ -7,11 +5,11 @@ use nu_protocol::{
use crate::*;
pub fn create_default_context() -> Rc<RefCell<EngineState>> {
let engine_state = Rc::new(RefCell::new(EngineState::new()));
pub fn create_default_context() -> EngineState {
let mut engine_state = EngineState::new();
let delta = {
let engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(&engine_state);
macro_rules! bind_command {
( $command:expr ) => {
@ -46,14 +44,19 @@ pub fn create_default_context() -> Rc<RefCell<EngineState>> {
IntoBinary,
IntoFilesize,
IntoInt,
Last,
Length,
Let,
LetEnv,
Lines,
Ls,
Math,
MathAbs,
MathAvg,
Mkdir,
Module,
Mv,
ParEach,
Ps,
Rm,
RunPlugin,
@ -91,7 +94,7 @@ pub fn create_default_context() -> Rc<RefCell<EngineState>> {
};
{
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
EngineState::merge_delta(&mut engine_state, delta);
}
engine_state

20
crates/nu-command/src/env/let_env.rs vendored
View file

@ -1,8 +1,9 @@
use nu_engine::eval_expression;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct LetEnv;
impl Command for LetEnv {
@ -26,10 +27,11 @@ impl Command for LetEnv {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let env_var = call.positional[0]
.as_string()
.expect("internal error: missing variable");
@ -38,14 +40,12 @@ impl Command for LetEnv {
.as_keyword()
.expect("internal error: missing keyword");
let rhs = eval_expression(context, keyword_expr)?;
let rhs = eval_expression(engine_state, stack, keyword_expr)?;
let rhs = rhs.as_string()?;
//println!("Adding: {:?} to {}", rhs, var_id);
context.add_env_var(env_var, rhs);
Ok(Value::Nothing {
span: call.positional[0].span,
})
stack.add_env_var(env_var, rhs);
Ok(PipelineData::new())
}
}

25
crates/nu-command/src/example_test.rs
View file

@ -1,26 +1,24 @@
use std::{cell::RefCell, rc::Rc};
use nu_engine::eval_block;
use nu_parser::parse;
use nu_protocol::{
engine::{Command, EngineState, EvaluationContext, StateWorkingSet},
Value,
engine::{Command, EngineState, Stack, StateWorkingSet},
PipelineData,
};
use super::{From, Into, Split};
use super::{From, Into, Math, Split};
pub fn test_examples(cmd: impl Command + 'static) {
let examples = cmd.examples();
let engine_state = Rc::new(RefCell::new(EngineState::new()));
let mut engine_state = Box::new(EngineState::new());
let delta = {
// Base functions that are needed for testing
// Try to keep this working set small to keep tests running as fast as possible
let engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
working_set.add_decl(Box::new(From));
working_set.add_decl(Box::new(Into));
working_set.add_decl(Box::new(Split));
working_set.add_decl(Box::new(Math));
// Adding the command that is being tested to the working set
working_set.add_decl(Box::new(cmd));
@ -28,7 +26,7 @@ pub fn test_examples(cmd: impl Command + 'static) {
working_set.render()
};
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
EngineState::merge_delta(&mut *engine_state, delta);
for example in examples {
// Skip tests that don't have results to compare to
@ -38,7 +36,6 @@ pub fn test_examples(cmd: impl Command + 'static) {
let start = std::time::Instant::now();
let (block, delta) = {
let engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let (output, err) = parse(&mut working_set, None, example.example.as_bytes(), false);
@ -49,16 +46,14 @@ pub fn test_examples(cmd: impl Command + 'static) {
(output, working_set.render())
};
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
EngineState::merge_delta(&mut engine_state, delta);
let state = EvaluationContext {
engine_state: engine_state.clone(),
stack: nu_protocol::engine::Stack::new(),
};
let mut stack = Stack::new();
match eval_block(&state, &block, Value::nothing()) {
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Err(err) => panic!("test eval error in `{}`: {:?}", example.example, err),
Ok(result) => {
let result = result.into_value();
println!("input: {}", example.example);
println!("result: {:?}", result);
println!("done: {:?}", start.elapsed());

19
crates/nu-command/src/experimental/git.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, Signature, Value};
#[derive(Clone)]
pub struct Git;
impl Command for Git {
@ -19,10 +20,11 @@ impl Command for Git {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
use std::process::Command as ProcessCommand;
use std::process::Stdio;
@ -37,17 +39,18 @@ impl Command for Git {
Ok(Value::String {
val: String::from_utf8_lossy(&result).to_string(),
span: call.head,
})
}
.into_pipeline_data())
}
Err(_err) => {
// FIXME: Move this to an external signature and add better error handling
Ok(Value::nothing())
Ok(PipelineData::new())
}
}
}
Err(_err) => {
// FIXME: Move this to an external signature and add better error handling
Ok(Value::nothing())
Ok(PipelineData::new())
}
}
}

21
crates/nu-command/src/experimental/git_checkout.rs
View file

@ -1,8 +1,9 @@
use nu_engine::eval_expression;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, Signature, SyntaxShape, Value};
#[derive(Clone)]
pub struct GitCheckout;
impl Command for GitCheckout {
@ -24,16 +25,17 @@ impl Command for GitCheckout {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
use std::process::Command as ProcessCommand;
use std::process::Stdio;
let block = &call.positional[0];
let out = eval_expression(context, block)?;
let out = eval_expression(engine_state, stack, block)?;
let out = out.as_string()?;
@ -52,17 +54,18 @@ impl Command for GitCheckout {
Ok(Value::String {
val: String::from_utf8_lossy(&result).to_string(),
span: call.head,
})
}
.into_pipeline_data())
}
Err(_err) => {
// FIXME: Move this to an external signature and add better error handling
Ok(Value::nothing())
Ok(PipelineData::new())
}
}
}
Err(_err) => {
// FIXME: Move this to an external signature and add better error handling
Ok(Value::nothing())
Ok(PipelineData::new())
}
}
}

26
crates/nu-command/src/experimental/list_git_branches.rs
View file

@ -4,9 +4,14 @@ use std::process::Command as ProcessCommand;
use std::process::Stdio;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::engine::Command;
use nu_protocol::engine::EngineState;
use nu_protocol::engine::Stack;
use nu_protocol::IntoInterruptiblePipelineData;
use nu_protocol::PipelineData;
use nu_protocol::{Signature, Value};
#[derive(Clone)]
pub struct ListGitBranches;
//NOTE: this is not a real implementation :D. It's just a simple one to test with until we port the real one.
@ -25,10 +30,11 @@ impl Command for ListGitBranches {
fn run(
&self,
_context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let list_branches = ProcessCommand::new("git")
.arg("branch")
.stdout(Stdio::piped())
@ -40,6 +46,7 @@ impl Command for ListGitBranches {
let s = String::from_utf8_lossy(&val).to_string();
#[allow(clippy::needless_collect)]
let lines: Vec<_> = s
.lines()
.filter_map(|x| {
@ -55,15 +62,14 @@ impl Command for ListGitBranches {
})
.collect();
Ok(Value::List {
vals: lines,
span: call.head,
})
Ok(lines
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
}

18
crates/nu-command/src/filesystem/cd.rs
View file

@ -1,8 +1,9 @@
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Cd;
impl Command for Cd {
@ -20,11 +21,12 @@ impl Command for Cd {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
let path: Option<String> = call.opt(context, 0)?;
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let path: Option<String> = call.opt(engine_state, stack, 0)?;
let path = match path {
Some(path) => {
@ -40,7 +42,7 @@ impl Command for Cd {
//FIXME: this only changes the current scope, but instead this environment variable
//should probably be a block that loads the information from the state in the overlay
context.add_env_var("PWD".into(), path);
Ok(Value::Nothing { span: call.head })
stack.add_env_var("PWD".into(), path);
Ok(PipelineData::new())
}
}

22
crates/nu-command/src/filesystem/cp.rs
View file

@ -1,15 +1,16 @@
use std::env::current_dir;
use std::path::PathBuf;
use super::interactive_helper::get_confirmation;
use super::util::get_interactive_confirmation;
use nu_engine::CallExt;
use nu_path::canonicalize_with;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, ShellError, Signature, SyntaxShape};
use crate::filesystem::util::FileStructure;
#[derive(Clone)]
pub struct Cp;
#[allow(unused_must_use)]
@ -37,12 +38,13 @@ impl Command for Cp {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<Value, ShellError> {
let source: String = call.req(context, 0)?;
let destination: String = call.req(context, 1)?;
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
let source: String = call.req(engine_state, stack, 0)?;
let destination: String = call.req(engine_state, stack, 1)?;
let interactive = call.has_flag("interactive");
let force = call.has_flag("force");
@ -88,7 +90,7 @@ impl Command for Cp {
destination.file_name().unwrap().to_str().unwrap()
);
let input = get_confirmation(prompt)?;
let input = get_interactive_confirmation(prompt)?;
if !input {
remove.push(index);
@ -202,6 +204,6 @@ impl Command for Cp {
}
}
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}

26
crates/nu-command/src/filesystem/interactive_helper.rs
View file

@ -1,26 +0,0 @@
use dialoguer::Input;
use std::error::Error;
pub fn get_confirmation(prompt: String) -> Result<bool, Box<dyn Error>> {
let input = Input::new()
.with_prompt(prompt)
.validate_with(|c_input: &String| -> Result<(), String> {
if c_input.len() == 1
&& (c_input == "y" || c_input == "Y" || c_input == "n" || c_input == "N")
{
Ok(())
} else if c_input.len() > 1 {
Err("Enter only one letter (Y/N)".to_string())
} else {
Err("Input not valid".to_string())
}
})
.default("Y/N".into())
.interact_text()?;
if input == "y" || input == "Y" {
Ok(true)
} else {
Ok(false)
}
}

127
crates/nu-command/src/filesystem/ls.rs
View file

@ -1,9 +1,10 @@
use chrono::{DateTime, Utc};
use nu_engine::eval_expression;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{IntoValueStream, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoInterruptiblePipelineData, PipelineData, Signature, SyntaxShape, Value};
#[derive(Clone)]
pub struct Ls;
//NOTE: this is not a real implementation :D. It's just a simple one to test with until we port the real one.
@ -26,12 +27,13 @@ impl Command for Ls {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let pattern = if let Some(expr) = call.positional.get(0) {
let result = eval_expression(context, expr)?;
let result = eval_expression(engine_state, stack, expr)?;
let mut result = result.as_string()?;
let path = std::path::Path::new(&result);
@ -50,69 +52,66 @@ impl Command for Ls {
let call_span = call.head;
let glob = glob::glob(&pattern).unwrap();
Ok(Value::Stream {
stream: glob
.into_iter()
.map(move |x| match x {
Ok(path) => match std::fs::symlink_metadata(&path) {
Ok(metadata) => {
let is_file = metadata.is_file();
let is_dir = metadata.is_dir();
let filesize = metadata.len();
Ok(glob
.into_iter()
.map(move |x| match x {
Ok(path) => match std::fs::symlink_metadata(&path) {
Ok(metadata) => {
let is_file = metadata.is_file();
let is_dir = metadata.is_dir();
let filesize = metadata.len();
let mut cols = vec!["name".into(), "type".into(), "size".into()];
let mut cols = vec!["name".into(), "type".into(), "size".into()];
let mut vals = vec![
Value::String {
val: path.to_string_lossy().to_string(),
span: call_span,
},
if is_file {
Value::string("File", call_span)
} else if is_dir {
Value::string("Dir", call_span)
} else {
Value::Nothing { span: call_span }
},
Value::Filesize {
val: filesize as i64,
span: call_span,
},
];
if let Ok(date) = metadata.modified() {
let utc: DateTime<Utc> = date.into();
cols.push("modified".into());
vals.push(Value::Date {
val: utc.into(),
span: call_span,
});
}
Value::Record {
cols,
vals,
let mut vals = vec![
Value::String {
val: path.to_string_lossy().to_string(),
span: call_span,
}
},
if is_file {
Value::string("file", call_span)
} else if is_dir {
Value::string("dir", call_span)
} else {
Value::Nothing { span: call_span }
},
Value::Filesize {
val: filesize as i64,
span: call_span,
},
];
if let Ok(date) = metadata.modified() {
let utc: DateTime<Utc> = date.into();
cols.push("modified".into());
vals.push(Value::Date {
val: utc.into(),
span: call_span,
});
}
Err(_) => Value::Record {
cols: vec!["name".into(), "type".into(), "size".into()],
vals: vec![
Value::String {
val: path.to_string_lossy().to_string(),
span: call_span,
},
Value::Nothing { span: call_span },
Value::Nothing { span: call_span },
],
Value::Record {
cols,
vals,
span: call_span,
},
}
}
Err(_) => Value::Record {
cols: vec!["name".into(), "type".into(), "size".into()],
vals: vec![
Value::String {
val: path.to_string_lossy().to_string(),
span: call_span,
},
Value::Nothing { span: call_span },
Value::Nothing { span: call_span },
],
span: call_span,
},
_ => Value::Nothing { span: call_span },
})
.into_value_stream(),
span: call_span,
})
},
_ => Value::Nothing { span: call_span },
})
.into_pipeline_data(engine_state.ctrlc.clone()))
}
}

22
crates/nu-command/src/filesystem/mkdir.rs
View file

@ -3,9 +3,12 @@ use std::env::current_dir;
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value, ValueStream};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
IntoInterruptiblePipelineData, PipelineData, ShellError, Signature, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Mkdir;
impl Command for Mkdir {
@ -29,13 +32,14 @@ impl Command for Mkdir {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<Value, ShellError> {
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
let path = current_dir()?;
let mut directories = call
.rest::<String>(context, 0)?
.rest::<String>(engine_state, stack, 0)?
.into_iter()
.map(|dir| path.join(dir))
.peekable();
@ -67,8 +71,8 @@ impl Command for Mkdir {
}
}
let stream = ValueStream::from_stream(stream.into_iter());
let span = call.head;
Ok(Value::Stream { stream, span })
Ok(stream
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
}
}

1
crates/nu-command/src/filesystem/mod.rs
View file

@ -1,6 +1,5 @@
mod cd;
mod cp;
mod interactive_helper;
mod ls;
mod mkdir;
mod mv;

22
crates/nu-command/src/filesystem/mv.rs
View file

@ -1,12 +1,13 @@
use std::env::current_dir;
use std::path::{Path, PathBuf};
use super::interactive_helper::get_confirmation;
use super::util::get_interactive_confirmation;
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, ShellError, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Mv;
#[allow(unused_must_use)]
@ -37,13 +38,14 @@ impl Command for Mv {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
// TODO: handle invalid directory or insufficient permissions when moving
let source: String = call.req(context, 0)?;
let destination: String = call.req(context, 1)?;
let source: String = call.req(engine_state, stack, 0)?;
let destination: String = call.req(engine_state, stack, 1)?;
let interactive = call.has_flag("interactive");
let force = call.has_flag("force");
@ -74,7 +76,7 @@ impl Command for Mv {
destination.file_name().unwrap().to_str().unwrap()
);
let input = get_confirmation(prompt)?;
let input = get_interactive_confirmation(prompt)?;
if !input {
remove.push(index);
@ -128,7 +130,7 @@ impl Command for Mv {
move_file(call, &entry, &destination)?
}
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}

36
crates/nu-command/src/filesystem/rm.rs
View file

@ -3,13 +3,16 @@ use std::env::current_dir;
use std::os::unix::prelude::FileTypeExt;
use std::path::PathBuf;
use super::interactive_helper::get_confirmation;
use super::util::get_interactive_confirmation;
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value, ValueStream};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
IntoInterruptiblePipelineData, PipelineData, ShellError, Signature, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Rm;
// Where self.0 is the unexpanded target's positional index (i.e. call.positional[self.0].span)
@ -56,15 +59,20 @@ impl Command for Rm {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<Value, ShellError> {
rm(context, call)
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
rm(engine_state, stack, call)
}
}
fn rm(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
fn rm(
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
) -> Result<PipelineData, ShellError> {
let trash = call.has_flag("trash");
let permanent = call.has_flag("permanent");
let interactive = call.has_flag("interactive");
@ -95,7 +103,7 @@ fn rm(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
let current_path = current_dir()?;
let mut paths = call
.rest::<String>(context, 0)?
.rest::<String>(engine_state, stack, 0)?
.into_iter()
.map(|path| current_path.join(path))
.peekable();
@ -134,7 +142,7 @@ fn rm(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
file.1.file_name().unwrap().to_str().unwrap()
);
let input = get_confirmation(prompt)?;
let input = get_interactive_confirmation(prompt)?;
if !input {
remove.push(index);
@ -164,11 +172,9 @@ fn rm(context: &EvaluationContext, call: &Call) -> Result<Value, ShellError> {
// let temp = rm_helper(call, args).flatten();
// let temp = input.flatten(call.head, move |_| rm_helper(call, args));
Ok(Value::Stream {
stream: ValueStream::from_stream(response.into_iter()),
span: call.head,
})
Ok(response
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
// Ok(Value::Nothing { span })
}

18
crates/nu-command/src/filesystem/touch.rs
View file

@ -2,9 +2,10 @@ use std::fs::OpenOptions;
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, ShellError, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Touch;
impl Command for Touch {
@ -28,12 +29,13 @@ impl Command for Touch {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<Value, ShellError> {
let target: String = call.req(context, 0)?;
let rest: Vec<String> = call.rest(context, 1)?;
_input: PipelineData,
) -> Result<PipelineData, ShellError> {
let target: String = call.req(engine_state, stack, 0)?;
let rest: Vec<String> = call.rest(engine_state, stack, 1)?;
for (index, item) in vec![target].into_iter().chain(rest).enumerate() {
match OpenOptions::new().write(true).create(true).open(&item) {
@ -47,6 +49,6 @@ impl Command for Touch {
}
}
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}

27
crates/nu-command/src/filesystem/util.rs
View file

@ -3,6 +3,9 @@ use std::path::{Path, PathBuf};
use nu_path::canonicalize_with;
use nu_protocol::ShellError;
use dialoguer::Input;
use std::error::Error;
#[derive(Default)]
pub struct FileStructure {
pub resources: Vec<Resource>,
@ -79,3 +82,27 @@ pub struct Resource {
}
impl Resource {}
pub fn get_interactive_confirmation(prompt: String) -> Result<bool, Box<dyn Error>> {
let input = Input::new()
.with_prompt(prompt)
.validate_with(|c_input: &String| -> Result<(), String> {
if c_input.len() == 1
&& (c_input == "y" || c_input == "Y" || c_input == "n" || c_input == "N")
{
Ok(())
} else if c_input.len() > 1 {
Err("Enter only one letter (Y/N)".to_string())
} else {
Err("Input not valid".to_string())
}
})
.default("Y/N".into())
.interact_text()?;
if input == "y" || input == "Y" {
Ok(true)
} else {
Ok(false)
}
}

251
crates/nu-command/src/filters/each.rs
View file

@ -1,8 +1,12 @@
use nu_engine::eval_block;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, IntoValueStream, Signature, Span, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, Signature, Span,
SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Each;
impl Command for Each {
@ -43,8 +47,8 @@ impl Command for Each {
vec![Example {
example: "[1 2 3] | each { 2 * $it }",
description: "Multiplies elements in list",
result: Some(Value::Stream {
stream: stream_test_1.into_iter().into_value_stream(),
result: Some(Value::List {
vals: stream_test_1,
span: Span::unknown(),
}),
}]
@ -52,151 +56,133 @@ impl Command for Each {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let block_id = call.positional[0]
.as_block()
.expect("internal error: expected block");
let numbered = call.has_flag("numbered");
let context = context.clone();
let ctrlc = engine_state.ctrlc.clone();
let engine_state = engine_state.clone();
let block = engine_state.get_block(block_id).clone();
let mut stack = stack.collect_captures(&block.captures);
let span = call.head;
match input {
Value::Range { val, .. } => Ok(Value::Stream {
stream: val
.into_range_iter()?
.enumerate()
.map(move |(idx, x)| {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
state.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
state.add_var(*var_id, x);
}
PipelineData::Value(Value::Range { val, .. }) => Ok(val
.into_range_iter()?
.enumerate()
.map(move |(idx, x)| {
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&state, block, Value::nothing()) {
Ok(v) => v,
Err(error) => Value::Error { error },
}
})
.into_value_stream(),
span: call.head,
}),
Value::List { vals: val, .. } => Ok(Value::Stream {
stream: val
.into_iter()
.enumerate()
.map(move |(idx, x)| {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
state.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
state.add_var(*var_id, x);
}
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(v) => v.into_value(),
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(ctrlc)),
PipelineData::Value(Value::List { vals: val, .. }) => Ok(val
.into_iter()
.enumerate()
.map(move |(idx, x)| {
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&state, block, Value::nothing()) {
Ok(v) => v,
Err(error) => Value::Error { error },
}
})
.into_value_stream(),
span: call.head,
}),
Value::Stream { stream, .. } => Ok(Value::Stream {
stream: stream
.enumerate()
.map(move |(idx, x)| {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
state.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
state.add_var(*var_id, x);
}
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(v) => v.into_value(),
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(ctrlc)),
PipelineData::Stream(stream) => Ok(stream
.enumerate()
.map(move |(idx, x)| {
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&state, block, Value::nothing()) {
Ok(v) => v,
Err(error) => Value::Error { error },
}
})
.into_value_stream(),
span: call.head,
}),
Value::Record { cols, vals, .. } => {
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(v) => v.into_value(),
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(ctrlc)),
PipelineData::Value(Value::Record { cols, vals, .. }) => {
let mut output_cols = vec![];
let mut output_vals = vec![];
for (col, val) in cols.into_iter().zip(vals.into_iter()) {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
let mut stack = stack.clone();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
state.add_var(
stack.add_var(
*var_id,
Value::Record {
cols: vec!["column".into(), "value".into()],
@ -213,17 +199,17 @@ impl Command for Each {
}
}
match eval_block(&state, block, Value::nothing())? {
Value::Record {
match eval_block(&engine_state, &mut stack, block, PipelineData::new())? {
PipelineData::Value(Value::Record {
mut cols, mut vals, ..
} => {
}) => {
// TODO check that the lengths match when traversing record
output_cols.append(&mut cols);
output_vals.append(&mut vals);
}
x => {
output_cols.push(col);
output_vals.push(x);
output_vals.push(x.into_value());
}
}
}
@ -232,20 +218,19 @@ impl Command for Each {
cols: output_cols,
vals: output_vals,
span: call.head,
})
}
.into_pipeline_data())
}
x => {
let engine_state = context.engine_state.borrow();
PipelineData::Value(x) => {
let block = engine_state.get_block(block_id);
let state = context.enter_scope();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
state.add_var(*var_id, x);
stack.add_var(*var_id, x);
}
}
eval_block(&state, block, Value::nothing())
eval_block(&engine_state, &mut stack, block, PipelineData::new())
}
}
}

18
crates/nu-command/src/filters/get.rs
View file

@ -1,8 +1,9 @@
use nu_engine::CallExt;
use nu_protocol::ast::{Call, CellPath};
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Get;
impl Command for Get {
@ -24,12 +25,15 @@ impl Command for Get {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
let cell_path: CellPath = call.req(context, 0)?;
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let cell_path: CellPath = call.req(engine_state, stack, 0)?;
input.follow_cell_path(&cell_path.members)
input
.follow_cell_path(&cell_path.members)
.map(|x| x.into_pipeline_data())
}
}

86
crates/nu-command/src/filters/last.rs Normal file
View file

@ -0,0 +1,86 @@
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, PipelineData, ShellError, Signature, Span, SyntaxShape,
Value,
};
use std::convert::TryInto;
#[derive(Clone)]
pub struct Last;
impl Command for Last {
fn name(&self) -> &str {
"last"
}
fn signature(&self) -> Signature {
Signature::build("last").optional(
"rows",
SyntaxShape::Int,
"starting from the back, the number of rows to return",
)
}
fn usage(&self) -> &str {
"Show only the last number of rows."
}
fn examples(&self) -> Vec<Example> {
vec![Example {
example: "[1,2,3] | last 2",
description: "Get the last 2 items",
result: Some(Value::List {
vals: vec![Value::test_int(2), Value::test_int(3)],
span: Span::unknown(),
}),
}]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let rows: Option<i64> = call.opt(engine_state, stack, 0)?;
let v: Vec<_> = input.into_iter().collect();
let vlen: i64 = v.len() as i64;
let beginning_rows_to_skip = rows_to_skip(vlen, rows);
let iter = v
.into_iter()
.skip(beginning_rows_to_skip.try_into().unwrap());
Ok(iter.into_pipeline_data(engine_state.ctrlc.clone()))
}
}
fn rows_to_skip(count: i64, rows: Option<i64>) -> i64 {
let end_rows_desired = if let Some(quantity) = rows {
quantity
} else {
1
};
if end_rows_desired < count {
count - end_rows_desired
} else {
0
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(Last {})
}
}

38
crates/nu-command/src/filters/length.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, Signature, Value};
#[derive(Clone)]
pub struct Length;
impl Command for Length {
@ -19,35 +20,22 @@ impl Command for Length {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
match input {
Value::List { vals: val, .. } => {
let length = val.len();
Ok(Value::Int {
val: length as i64,
span: call.head,
})
}
Value::Stream { stream, .. } => {
let length = stream.count();
Ok(Value::Int {
val: length as i64,
span: call.head,
})
}
Value::Nothing { .. } => Ok(Value::Int {
PipelineData::Value(Value::Nothing { .. }) => Ok(Value::Int {
val: 0,
span: call.head,
}),
}
.into_pipeline_data()),
_ => Ok(Value::Int {
val: 1,
val: input.into_iter().count() as i64,
span: call.head,
}),
}
.into_pipeline_data()),
}
}
}

32
crates/nu-command/src/filters/lines.rs
View file

@ -1,10 +1,8 @@
use std::cell::RefCell;
use std::rc::Rc;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, Value, ValueStream};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoInterruptiblePipelineData, PipelineData, ShellError, Signature, Value};
#[derive(Clone)]
pub struct Lines;
const SPLIT_CHAR: char = '\n';
@ -24,17 +22,17 @@ impl Command for Lines {
fn run(
&self,
_context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
let span = call.head;
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
match input {
#[allow(clippy::needless_collect)]
// Collect is needed because the string may not live long enough for
// the Rc structure to continue using it. If split could take ownership
// of the split values, then this wouldn't be needed
Value::String { val, span } => {
PipelineData::Value(Value::String { val, span }) => {
let lines = val
.split(SPLIT_CHAR)
.map(|s| s.to_string())
@ -48,12 +46,9 @@ impl Command for Lines {
}
});
Ok(Value::Stream {
stream: ValueStream(Rc::new(RefCell::new(iter))),
span,
})
Ok(iter.into_pipeline_data(engine_state.ctrlc.clone()))
}
Value::Stream { stream, span: _ } => {
PipelineData::Stream(stream) => {
let iter = stream
.into_iter()
.filter_map(|value| {
@ -79,12 +74,9 @@ impl Command for Lines {
})
.flatten();
Ok(Value::Stream {
stream: ValueStream(Rc::new(RefCell::new(iter))),
span,
})
Ok(iter.into_pipeline_data(engine_state.ctrlc.clone()))
}
val => Err(ShellError::UnsupportedInput(
PipelineData::Value(val) => Err(ShellError::UnsupportedInput(
format!("Not supported input: {}", val.as_string()?),
call.head,
)),

4
crates/nu-command/src/filters/mod.rs
View file

@ -1,15 +1,19 @@
mod each;
mod get;
mod last;
mod length;
mod lines;
mod par_each;
mod select;
mod where_;
mod wrap;
pub use each::Each;
pub use get::Get;
pub use last::Last;
pub use length::Length;
pub use lines::Lines;
pub use par_each::ParEach;
pub use select::Select;
pub use where_::Where;
pub use wrap::Wrap;

256
crates/nu-command/src/filters/par_each.rs Normal file
View file

@ -0,0 +1,256 @@
use nu_engine::eval_block;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, Signature, SyntaxShape,
Value,
};
use rayon::prelude::*;
#[derive(Clone)]
pub struct ParEach;
impl Command for ParEach {
fn name(&self) -> &str {
"par-each"
}
fn usage(&self) -> &str {
"Run a block on each element of input in parallel"
}
fn signature(&self) -> nu_protocol::Signature {
Signature::build("par-each")
.required(
"block",
SyntaxShape::Block(Some(vec![SyntaxShape::Any])),
"the block to run",
)
.switch("numbered", "iterate with an index", Some('n'))
}
fn examples(&self) -> Vec<Example> {
vec![Example {
example: "[1 2 3] | par-each { 2 * $it }",
description: "Multiplies elements in list",
result: None,
}]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let block_id = call.positional[0]
.as_block()
.expect("internal error: expected block");
let numbered = call.has_flag("numbered");
let ctrlc = engine_state.ctrlc.clone();
let engine_state = engine_state.clone();
let block = engine_state.get_block(block_id);
let mut stack = stack.collect_captures(&block.captures);
let span = call.head;
match input {
PipelineData::Value(Value::Range { val, .. }) => Ok(val
.into_range_iter()?
.enumerate()
.par_bridge()
.map(move |(idx, x)| {
let block = engine_state.get_block(block_id);
let mut stack = stack.clone();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&engine_state, &mut stack, block, PipelineData::new()) {
Ok(v) => v,
Err(error) => Value::Error { error }.into_pipeline_data(),
}
})
.collect::<Vec<_>>()
.into_iter()
.flatten()
.into_pipeline_data(ctrlc)),
PipelineData::Value(Value::List { vals: val, .. }) => Ok(val
.into_iter()
.enumerate()
.par_bridge()
.map(move |(idx, x)| {
let block = engine_state.get_block(block_id);
let mut stack = stack.clone();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&engine_state, &mut stack, block, PipelineData::new()) {
Ok(v) => v,
Err(error) => Value::Error { error }.into_pipeline_data(),
}
})
.collect::<Vec<_>>()
.into_iter()
.flatten()
.into_pipeline_data(ctrlc)),
PipelineData::Stream(stream) => Ok(stream
.enumerate()
.par_bridge()
.map(move |(idx, x)| {
let block = engine_state.get_block(block_id);
let mut stack = stack.clone();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
if numbered {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["index".into(), "item".into()],
vals: vec![
Value::Int {
val: idx as i64,
span,
},
x,
],
span,
},
);
} else {
stack.add_var(*var_id, x);
}
}
}
match eval_block(&engine_state, &mut stack, block, PipelineData::new()) {
Ok(v) => v,
Err(error) => Value::Error { error }.into_pipeline_data(),
}
})
.collect::<Vec<_>>()
.into_iter()
.flatten()
.into_pipeline_data(ctrlc)),
PipelineData::Value(Value::Record { cols, vals, .. }) => {
let mut output_cols = vec![];
let mut output_vals = vec![];
for (col, val) in cols.into_iter().zip(vals.into_iter()) {
let block = engine_state.get_block(block_id);
let mut stack = stack.clone();
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
stack.add_var(
*var_id,
Value::Record {
cols: vec!["column".into(), "value".into()],
vals: vec![
Value::String {
val: col.clone(),
span: call.head,
},
val,
],
span: call.head,
},
);
}
}
match eval_block(&engine_state, &mut stack, block, PipelineData::new())? {
PipelineData::Value(Value::Record {
mut cols, mut vals, ..
}) => {
// TODO check that the lengths match when traversing record
output_cols.append(&mut cols);
output_vals.append(&mut vals);
}
x => {
output_cols.push(col);
output_vals.push(x.into_value());
}
}
}
Ok(Value::Record {
cols: output_cols,
vals: output_vals,
span: call.head,
}
.into_pipeline_data())
}
PipelineData::Value(x) => {
let block = engine_state.get_block(block_id);
if let Some(var) = block.signature.get_positional(0) {
if let Some(var_id) = &var.var_id {
stack.add_var(*var_id, x);
}
}
eval_block(&engine_state, &mut stack, block, PipelineData::new())
}
}
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(ParEach {})
}
}

79
crates/nu-command/src/filters/select.rs
View file

@ -1,8 +1,12 @@
use nu_engine::CallExt;
use nu_protocol::ast::{Call, CellPath};
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, IntoValueStream, ShellError, Signature, Span, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, ShellError, Signature,
Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Select;
impl Command for Select {
@ -24,14 +28,15 @@ impl Command for Select {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
let columns: Vec<CellPath> = call.rest(context, 0)?;
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let columns: Vec<CellPath> = call.rest(engine_state, stack, 0)?;
let span = call.head;
select(span, columns, input)
select(engine_state, span, columns, input)
}
fn examples(&self) -> Vec<Example> {
@ -50,16 +55,21 @@ impl Command for Select {
}
}
fn select(span: Span, columns: Vec<CellPath>, input: Value) -> Result<Value, ShellError> {
fn select(
engine_state: &EngineState,
span: Span,
columns: Vec<CellPath>,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
if columns.is_empty() {
return Err(ShellError::CantFindColumn(span, input.span()?));
return Err(ShellError::CantFindColumn(span, span)); //FIXME?
}
match input {
Value::List {
PipelineData::Value(Value::List {
vals: input_vals,
span,
} => {
}) => {
let mut output = vec![];
for input_val in input_vals {
@ -76,33 +86,32 @@ fn select(span: Span, columns: Vec<CellPath>, input: Value) -> Result<Value, She
output.push(Value::Record { cols, vals, span })
}
Ok(Value::List { vals: output, span })
Ok(output
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
}
Value::Stream { stream, span } => Ok(Value::Stream {
stream: stream
.map(move |x| {
let mut cols = vec![];
let mut vals = vec![];
for path in &columns {
//FIXME: improve implementation to not clone
match x.clone().follow_cell_path(&path.members) {
Ok(value) => {
cols.push(path.into_string());
vals.push(value);
}
Err(error) => {
cols.push(path.into_string());
vals.push(Value::Error { error });
}
PipelineData::Stream(stream) => Ok(stream
.map(move |x| {
let mut cols = vec![];
let mut vals = vec![];
for path in &columns {
//FIXME: improve implementation to not clone
match x.clone().follow_cell_path(&path.members) {
Ok(value) => {
cols.push(path.into_string());
vals.push(value);
}
Err(error) => {
cols.push(path.into_string());
vals.push(Value::Error { error });
}
}
}
Value::Record { cols, vals, span }
})
.into_value_stream(),
span,
}),
v => {
Value::Record { cols, vals, span }
})
.into_pipeline_data(engine_state.ctrlc.clone())),
PipelineData::Value(v) => {
let mut cols = vec![];
let mut vals = vec![];
@ -114,7 +123,7 @@ fn select(span: Span, columns: Vec<CellPath>, input: Value) -> Result<Value, She
vals.push(result);
}
Ok(Value::Record { cols, vals, span })
Ok(Value::Record { cols, vals, span }.into_pipeline_data())
}
}
}

83
crates/nu-command/src/filters/where_.rs
View file

@ -1,8 +1,12 @@
use nu_engine::eval_expression;
use nu_protocol::ast::{Call, Expr, Expression};
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{IntoValueStream, ShellError, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, ShellError, Signature,
SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Where;
impl Command for Where {
@ -20,13 +24,18 @@ impl Command for Where {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let cond = call.positional[0].clone();
let context = context.enter_scope();
let ctrlc = engine_state.ctrlc.clone();
let engine_state = engine_state.clone();
// FIXME: very expensive
let mut stack = stack.clone();
let (var_id, cond) = match cond {
Expression {
@ -37,54 +46,40 @@ impl Command for Where {
};
match input {
Value::Stream { stream, span } => {
let output_stream = stream
.filter(move |value| {
context.add_var(var_id, value.clone());
PipelineData::Stream(stream) => Ok(stream
.filter(move |value| {
stack.add_var(var_id, value.clone());
let result = eval_expression(&context, &cond);
let result = eval_expression(&engine_state, &mut stack, &cond);
match result {
Ok(result) => result.is_true(),
_ => false,
}
})
.into_value_stream();
Ok(Value::Stream {
stream: output_stream,
span,
match result {
Ok(result) => result.is_true(),
_ => false,
}
})
}
Value::List { vals, span } => {
let output_stream = vals
.into_iter()
.filter(move |value| {
context.add_var(var_id, value.clone());
.into_pipeline_data(ctrlc)),
PipelineData::Value(Value::List { vals, .. }) => Ok(vals
.into_iter()
.filter(move |value| {
stack.add_var(var_id, value.clone());
let result = eval_expression(&context, &cond);
let result = eval_expression(&engine_state, &mut stack, &cond);
match result {
Ok(result) => result.is_true(),
_ => false,
}
})
.into_value_stream();
Ok(Value::Stream {
stream: output_stream,
span,
match result {
Ok(result) => result.is_true(),
_ => false,
}
})
}
x => {
context.add_var(var_id, x.clone());
.into_pipeline_data(ctrlc)),
PipelineData::Value(x) => {
stack.add_var(var_id, x.clone());
let result = eval_expression(&context, &cond)?;
let result = eval_expression(&engine_state, &mut stack, &cond)?;
if result.is_true() {
Ok(x)
Ok(x.into_pipeline_data())
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
}

57
crates/nu-command/src/filters/wrap.rs
View file

@ -1,8 +1,11 @@
use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{IntoValueStream, Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, Signature, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Wrap;
impl Command for Wrap {
@ -20,40 +23,36 @@ impl Command for Wrap {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let span = call.head;
let name: String = call.req(context, 0)?;
let name: String = call.req(engine_state, stack, 0)?;
match input {
Value::List { vals, .. } => Ok(Value::List {
vals: vals
.into_iter()
.map(move |x| Value::Record {
cols: vec![name.clone()],
vals: vec![x],
span,
})
.collect(),
span,
}),
Value::Stream { stream, .. } => Ok(Value::Stream {
stream: stream
.map(move |x| Value::Record {
cols: vec![name.clone()],
vals: vec![x],
span,
})
.into_value_stream(),
span,
}),
_ => Ok(Value::Record {
PipelineData::Value(Value::List { vals, .. }) => Ok(vals
.into_iter()
.map(move |x| Value::Record {
cols: vec![name.clone()],
vals: vec![x],
span,
})
.into_pipeline_data(engine_state.ctrlc.clone())),
PipelineData::Stream(stream) => Ok(stream
.map(move |x| Value::Record {
cols: vec![name.clone()],
vals: vec![x],
span,
})
.into_pipeline_data(engine_state.ctrlc.clone())),
PipelineData::Value(input) => Ok(Value::Record {
cols: vec![name],
vals: vec![input],
span,
}),
}
.into_pipeline_data()),
}
}
}

14
crates/nu-command/src/formats/from/command.rs
View file

@ -1,7 +1,8 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, ShellError, Signature};
#[derive(Clone)]
pub struct From;
impl Command for From {
@ -19,10 +20,11 @@ impl Command for From {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, ShellError> {
Ok(Value::nothing())
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, ShellError> {
Ok(PipelineData::new())
}
}

42
crates/nu-command/src/formats/from/json.rs
View file

@ -1,7 +1,11 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, IntoValueStream, ShellError, Signature, Span, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, ShellError, Signature,
Span, Value,
};
#[derive(Clone)]
pub struct FromJson;
impl Command for FromJson {
@ -67,11 +71,12 @@ impl Command for FromJson {
fn run(
&self,
_context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, ShellError> {
let span = input.span()?;
input: PipelineData,
) -> Result<nu_protocol::PipelineData, ShellError> {
let span = call.head;
let mut string_input = input.collect_string();
string_input.push('\n');
@ -79,21 +84,18 @@ impl Command for FromJson {
if call.has_flag("objects") {
#[allow(clippy::needless_collect)]
let lines: Vec<String> = string_input.lines().map(|x| x.to_string()).collect();
Ok(Value::Stream {
stream: lines
.into_iter()
.map(move |mut x| {
x.push('\n');
match convert_string_to_value(x, span) {
Ok(v) => v,
Err(error) => Value::Error { error },
}
})
.into_value_stream(),
span,
})
Ok(lines
.into_iter()
.map(move |mut x| {
x.push('\n');
match convert_string_to_value(x, span) {
Ok(v) => v,
Err(error) => Value::Error { error },
}
})
.into_pipeline_data(engine_state.ctrlc.clone()))
} else {
convert_string_to_value(string_input, span)
Ok(convert_string_to_value(string_input, span)?.into_pipeline_data())
}
}
}

2
crates/nu-command/src/lib.rs
View file

@ -7,6 +7,7 @@ mod experimental;
mod filesystem;
mod filters;
mod formats;
mod math;
mod strings;
mod system;
mod viewers;
@ -20,6 +21,7 @@ pub use experimental::*;
pub use filesystem::*;
pub use filters::*;
pub use formats::*;
pub use math::*;
pub use strings::*;
pub use system::*;
pub use viewers::*;

84
crates/nu-command/src/math/abs.rs Normal file
View file

@ -0,0 +1,84 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{Example, PipelineData, ShellError, Signature, Span, Value};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
fn name(&self) -> &str {
"math abs"
}
fn signature(&self) -> Signature {
Signature::build("math abs")
}
fn usage(&self) -> &str {
"Returns absolute values of a list of numbers"
}
fn run(
&self,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
input.map(
move |value| abs_helper(value, head),
engine_state.ctrlc.clone(),
)
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Get absolute of each value in a list of numbers",
example: "[-50 -100.0 25] | math abs",
result: Some(Value::List {
vals: vec![
Value::test_int(50),
Value::Float {
val: 100.0,
span: Span::unknown(),
},
Value::test_int(25),
],
span: Span::unknown(),
}),
}]
}
}
fn abs_helper(val: Value, head: Span) -> Value {
match val {
Value::Int { val, span } => Value::int(val.abs(), span),
Value::Float { val, span } => Value::Float {
val: val.abs(),
span,
},
Value::Duration { val, span } => Value::Duration {
val: val.abs(),
span,
},
_ => Value::Error {
error: ShellError::UnsupportedInput(
String::from("Only numerical values are supported"),
head,
),
},
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(SubCommand {})
}
}

83
crates/nu-command/src/math/avg.rs Normal file
View file

@ -0,0 +1,83 @@
use crate::math::reducers::{reducer_for, Reduce};
use crate::math::utils::run_with_function;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{Example, PipelineData, ShellError, Signature, Span, Value};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
fn name(&self) -> &str {
"math avg"
}
fn signature(&self) -> Signature {
Signature::build("math avg")
}
fn usage(&self) -> &str {
"Finds the average of a list of numbers or tables"
}
fn run(
&self,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
run_with_function(call, input, average)
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Get the average of a list of numbers",
example: "[-50 100.0 25] | math avg",
result: Some(Value::Float {
val: 25.0,
span: Span::unknown(),
}),
}]
}
}
pub fn average(values: &[Value], head: &Span) -> Result<Value, ShellError> {
let sum = reducer_for(Reduce::Summation);
let total = &sum(
Value::Int {
val: 0,
span: Span::unknown(),
},
values.to_vec(),
)?;
match total {
Value::Filesize { val, span } => Ok(Value::Filesize {
val: val / values.len() as i64,
span: *span,
}),
Value::Duration { val, span } => Ok(Value::Duration {
val: val / values.len() as i64,
span: *span,
}),
_ => total.div(
*head,
&Value::Int {
val: values.len() as i64,
span: *head,
},
),
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(SubCommand {})
}
}

41
crates/nu-command/src/math/command.rs Normal file
View file

@ -0,0 +1,41 @@
use nu_engine::get_full_help;
use nu_protocol::{
ast::Call,
engine::{Command, EngineState, Stack},
IntoPipelineData, PipelineData, Signature, Value,
};
#[derive(Clone)]
pub struct MathCommand;
impl Command for MathCommand {
fn name(&self) -> &str {
"math"
}
fn signature(&self) -> Signature {
Signature::build("math")
}
fn usage(&self) -> &str {
"Use mathematical functions as aggregate functions on a list of numbers or tables."
}
fn run(
&self,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(Value::String {
val: get_full_help(
&MathCommand.signature(),
&MathCommand.examples(),
engine_state,
),
span: call.head,
}
.into_pipeline_data())
}
}

9
crates/nu-command/src/math/mod.rs Normal file
View file

@ -0,0 +1,9 @@
mod abs;
mod avg;
pub mod command;
mod reducers;
mod utils;
pub use abs::SubCommand as MathAbs;
pub use avg::SubCommand as MathAvg;
pub use command::MathCommand as Math;

60
crates/nu-command/src/math/reducers.rs Normal file
View file

@ -0,0 +1,60 @@
use nu_protocol::{ShellError, Span, Value};
#[allow(dead_code)]
pub enum Reduce {
Summation,
}
pub fn reducer_for(
command: Reduce,
) -> Box<dyn Fn(Value, Vec<Value>) -> Result<Value, ShellError> + Send + Sync + 'static> {
match command {
Reduce::Summation => Box::new(|_, values| sum(values)),
}
}
pub fn sum(data: Vec<Value>) -> Result<Value, ShellError> {
let initial_value = data.get(0);
let mut acc = match initial_value {
Some(Value::Filesize { span, .. }) => Ok(Value::Filesize {
val: 0,
span: *span,
}),
Some(Value::Duration { span, .. }) => Ok(Value::Duration {
val: 0,
span: *span,
}),
Some(Value::Int { span, .. }) | Some(Value::Float { span, .. }) => Ok(Value::Int {
val: 0,
span: *span,
}),
None => Err(ShellError::UnsupportedInput(
"Empty input".to_string(),
Span::unknown(),
)),
_ => Ok(Value::nothing()),
}?;
for value in &data {
match value {
Value::Int { .. }
| Value::Float { .. }
| Value::Filesize { .. }
| Value::Duration { .. } => {
let new_value = acc.add(acc.span().unwrap_or_else(|_| Span::unknown()), value);
if new_value.is_err() {
return new_value;
}
acc = new_value.expect("This should never trigger")
}
other => {
return Err(ShellError::UnsupportedInput(
"Attempted to compute the sum of a value that cannot be summed".to_string(),
other.span().unwrap_or_else(|_| Span::unknown()),
));
}
}
}
Ok(acc)
}

87
crates/nu-command/src/math/utils.rs Normal file
View file

@ -0,0 +1,87 @@
use nu_protocol::ast::Call;
use nu_protocol::{IntoPipelineData, PipelineData, ShellError, Span, Value};
use std::collections::HashMap;
pub type MathFunction = fn(values: &[Value], span: &Span) -> Result<Value, ShellError>;
pub fn run_with_function(
call: &Call,
input: PipelineData,
mf: MathFunction,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let name = call.head;
let res = calculate(input, name, mf);
match res {
Ok(v) => Ok(v.into_pipeline_data()),
Err(e) => Err(e),
}
}
fn helper_for_tables(
values: PipelineData,
name: Span,
mf: MathFunction,
) -> Result<Value, ShellError> {
// If we are not dealing with Primitives, then perhaps we are dealing with a table
// Create a key for each column name
let mut column_values = HashMap::new();
for val in values {
if let Value::Record { cols, vals, .. } = val {
for (key, value) in cols.iter().zip(vals.iter()) {
column_values
.entry(key.clone())
.and_modify(|v: &mut Vec<Value>| v.push(value.clone()))
.or_insert_with(|| vec![value.clone()]);
}
}
}
// The mathematical function operates over the columns of the table
let mut column_totals = HashMap::new();
for (col_name, col_vals) in column_values {
if let Ok(out) = mf(&col_vals, &name) {
column_totals.insert(col_name, out);
}
}
if column_totals.keys().len() == 0 {
return Err(ShellError::UnsupportedInput(
"Unable to give a result with this input".to_string(),
name,
));
}
let (cols, vals) = column_totals
.into_iter()
.fold((vec![], vec![]), |mut acc, (k, v)| {
acc.0.push(k);
acc.1.push(v);
acc
});
Ok(Value::Record {
cols,
vals,
span: name,
})
}
pub fn calculate(values: PipelineData, name: Span, mf: MathFunction) -> Result<Value, ShellError> {
match values {
PipelineData::Stream(_) => helper_for_tables(values, name, mf),
PipelineData::Value(Value::List { ref vals, .. }) => match &vals[..] {
[Value::Record { .. }, _end @ ..] => helper_for_tables(values, name, mf),
_ => mf(vals, &name),
},
PipelineData::Value(Value::Record { vals, cols, span }) => {
let new_vals: Result<Vec<Value>, ShellError> =
vals.into_iter().map(|val| mf(&[val], &name)).collect();
match new_vals {
Ok(vec) => Ok(Value::Record {
cols,
vals: vec,
span,
}),
Err(err) => Err(err),
}
}
PipelineData::Value(val) => mf(&[val], &name),
}
}

19
crates/nu-command/src/strings/build_string.rs
View file

@ -1,8 +1,11 @@
use nu_engine::eval_expression;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, ShellError, Signature, Span, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Example, IntoPipelineData, PipelineData, ShellError, Signature, Span, SyntaxShape, Value,
};
#[derive(Clone)]
pub struct BuildString;
impl Command for BuildString {
@ -41,20 +44,22 @@ impl Command for BuildString {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let output = call
.positional
.iter()
.map(|expr| eval_expression(context, expr).map(|val| val.into_string()))
.map(|expr| eval_expression(engine_state, stack, expr).map(|val| val.into_string()))
.collect::<Result<Vec<String>, ShellError>>()?;
Ok(Value::String {
val: output.join(""),
span: call.head,
})
}
.into_pipeline_data())
}
}

39
crates/nu-command/src/strings/size.rs
View file

@ -3,9 +3,10 @@ extern crate unicode_segmentation;
use unicode_segmentation::UnicodeSegmentation;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Example, ShellError, Signature, Span, Type, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{Example, PipelineData, ShellError, Signature, Span, Type, Value};
#[derive(Clone)]
pub struct Size;
impl Command for Size {
@ -23,11 +24,12 @@ impl Command for Size {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<Value, ShellError> {
size(context, call, input)
input: PipelineData,
) -> Result<PipelineData, ShellError> {
size(engine_state, call, input)
}
fn examples(&self) -> Vec<Example> {
@ -98,18 +100,25 @@ impl Command for Size {
}
}
fn size(_context: &EvaluationContext, call: &Call, input: Value) -> Result<Value, ShellError> {
fn size(
engine_state: &EngineState,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let span = call.head;
input.map(span, move |v| match v.as_string() {
Ok(s) => count(&s, span),
Err(_) => Value::Error {
error: ShellError::PipelineMismatch {
expected: Type::String,
expected_span: span,
origin: span,
input.map(
move |v| match v.as_string() {
Ok(s) => count(&s, span),
Err(_) => Value::Error {
error: ShellError::PipelineMismatch {
expected: Type::String,
expected_span: span,
origin: span,
},
},
},
})
engine_state.ctrlc.clone(),
)
}
fn count(contents: &str, span: Span) -> Value {

25
crates/nu-command/src/strings/split/chars.rs
View file

@ -1,9 +1,10 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, ShellError, Signature, Span, Type, Value,
engine::{Command, EngineState, Stack},
Example, PipelineData, ShellError, Signature, Span, Type, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -38,18 +39,26 @@ impl Command for SubCommand {
fn run(
&self,
_context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
split_chars(call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
split_chars(engine_state, call, input)
}
}
fn split_chars(call: &Call, input: Value) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
fn split_chars(
engine_state: &EngineState,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let span = call.head;
Ok(input.flat_map(span, move |x| split_chars_helper(&x, span)))
input.flat_map(
move |x| split_chars_helper(&x, span),
engine_state.ctrlc.clone(),
)
}
fn split_chars_helper(v: &Value, name: Span) -> Vec<Value> {

51
crates/nu-command/src/strings/split/column.rs
View file

@ -1,10 +1,11 @@
use nu_engine::CallExt;
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
engine::{Command, EngineState, Stack},
PipelineData, ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -33,27 +34,30 @@ impl Command for SubCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
split_column(context, call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
split_column(engine_state, stack, call, input)
}
}
fn split_column(
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let name_span = call.head;
let separator: Spanned<String> = call.req(context, 0)?;
let rest: Vec<Spanned<String>> = call.rest(context, 1)?;
let separator: Spanned<String> = call.req(engine_state, stack, 0)?;
let rest: Vec<Spanned<String>> = call.rest(engine_state, stack, 1)?;
let collapse_empty = call.has_flag("collapse-empty");
input.map(name_span, move |x| {
split_column_helper(&x, &separator, &rest, collapse_empty, name_span)
})
input.flat_map(
move |x| split_column_helper(&x, &separator, &rest, collapse_empty, name_span),
engine_state.ctrlc.clone(),
)
}
fn split_column_helper(
@ -62,7 +66,7 @@ fn split_column_helper(
rest: &[Spanned<String>],
collapse_empty: bool,
head: Span,
) -> Value {
) -> Vec<Value> {
if let Ok(s) = v.as_string() {
let splitter = separator.item.replace("\\n", "\n");
@ -94,24 +98,21 @@ fn split_column_helper(
vals.push(Value::string(k, head));
}
}
Value::List {
vals: vec![Value::Record {
cols,
vals,
span: head,
}],
vec![Value::Record {
cols,
vals,
span: head,
}
}]
} else {
match v.span() {
Ok(span) => Value::Error {
Ok(span) => vec![Value::Error {
error: ShellError::PipelineMismatch {
expected: Type::String,
expected_span: head,
origin: span,
},
},
Err(error) => Value::Error { error },
}],
Err(error) => vec![Value::Error { error }],
}
}
}

20
crates/nu-command/src/strings/split/command.rs
View file

@ -1,8 +1,8 @@
use nu_engine::get_full_help;
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Signature, Value,
engine::{Command, EngineState, Stack},
IntoPipelineData, PipelineData, Signature, Value,
};
#[derive(Clone)]
@ -23,14 +23,20 @@ impl Command for SplitCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(Value::String {
val: get_full_help(&SplitCommand.signature(), &SplitCommand.examples(), context),
val: get_full_help(
&SplitCommand.signature(),
&SplitCommand.examples(),
engine_state,
),
span: call.head,
})
}
.into_pipeline_data())
}
}

30
crates/nu-command/src/strings/split/row.rs
View file

@ -1,10 +1,11 @@
use nu_engine::CallExt;
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
engine::{Command, EngineState, Stack},
PipelineData, ShellError, Signature, Span, Spanned, SyntaxShape, Type, Value,
};
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
@ -26,25 +27,28 @@ impl Command for SubCommand {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
split_row(context, call, input)
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
split_row(engine_state, stack, call, input)
}
}
fn split_row(
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let name_span = call.head;
let separator: Spanned<String> = call.req(context, 0)?;
let separator: Spanned<String> = call.req(engine_state, stack, 0)?;
Ok(input.flat_map(name_span, move |x| {
split_row_helper(&x, &separator, name_span)
}))
input.flat_map(
move |x| split_row_helper(&x, &separator, name_span),
engine_state.ctrlc.clone(),
)
}
fn split_row_helper(v: &Value, separator: &Spanned<String>, name: Span) -> Vec<Value> {

22
crates/nu-command/src/system/benchmark.rs
View file

@ -2,9 +2,10 @@ use std::time::Instant;
use nu_engine::eval_block;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{Signature, SyntaxShape, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct Benchmark;
impl Command for Benchmark {
@ -26,23 +27,22 @@ impl Command for Benchmark {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let block = call.positional[0]
.as_block()
.expect("internal error: expected block");
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(block);
let state = context.enter_scope();
let mut stack = stack.collect_captures(&block.captures);
let start_time = Instant::now();
eval_block(&state, block, Value::nothing())?;
eval_block(engine_state, &mut stack, block, PipelineData::new())?.into_value();
let end_time = Instant::now();
println!("{} ms", (end_time - start_time).as_millis());
Ok(Value::Nothing {
span: call.positional[0].span,
})
Ok(PipelineData::new())
}
}

20
crates/nu-command/src/system/ps.rs
View file

@ -1,10 +1,11 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, ShellError, Signature, Value,
engine::{Command, EngineState, Stack},
Example, IntoInterruptiblePipelineData, PipelineData, ShellError, Signature, Value,
};
use sysinfo::{ProcessExt, System, SystemExt};
#[derive(Clone)]
pub struct Ps;
impl Command for Ps {
@ -29,11 +30,12 @@ impl Command for Ps {
fn run(
&self,
_context: &EvaluationContext,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
run_ps(call)
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
run_ps(engine_state, call)
}
fn examples(&self) -> Vec<Example> {
@ -45,7 +47,7 @@ impl Command for Ps {
}
}
fn run_ps(call: &Call) -> Result<Value, ShellError> {
fn run_ps(engine_state: &EngineState, call: &Call) -> Result<PipelineData, ShellError> {
let span = call.head;
let long = call.has_flag("long");
let mut sys = System::new_all();
@ -124,5 +126,7 @@ fn run_ps(call: &Call) -> Result<Value, ShellError> {
}
}
Ok(Value::List { vals: output, span })
Ok(output
.into_iter()
.into_pipeline_data(engine_state.ctrlc.clone()))
}

158
crates/nu-command/src/system/run_external.rs
View file

@ -1,22 +1,19 @@
use std::borrow::Cow;
use std::cell::RefCell;
use std::collections::HashMap;
use std::env;
use std::io::{BufRead, BufReader, Write};
use std::process::{ChildStdin, Command as CommandSys, Stdio};
use std::rc::Rc;
use std::process::{Command as CommandSys, Stdio};
use std::sync::mpsc;
use nu_protocol::{
ast::{Call, Expression},
engine::{Command, EvaluationContext},
ShellError, Signature, SyntaxShape, Value,
};
use nu_protocol::{Span, ValueStream};
use nu_protocol::engine::{EngineState, Stack};
use nu_protocol::{ast::Call, engine::Command, ShellError, Signature, SyntaxShape, Value};
use nu_protocol::{IntoInterruptiblePipelineData, PipelineData, Span, Spanned};
use nu_engine::eval_expression;
use nu_engine::CallExt;
const OUTPUT_BUFFER_SIZE: usize = 8192;
#[derive(Clone)]
pub struct External;
impl Command for External {
@ -36,62 +33,49 @@ impl Command for External {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<Value, ShellError> {
let command = ExternalCommand::try_new(call, context)?;
command.run_with_input(input)
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let name: Spanned<String> = call.req(engine_state, stack, 0)?;
let args: Vec<String> = call.rest(engine_state, stack, 1)?;
let last_expression = call.has_flag("last_expression");
let env_vars = stack.get_env_vars();
let command = ExternalCommand {
name,
args,
last_expression,
env_vars,
};
command.run_with_input(engine_state, input)
}
}
pub struct ExternalCommand<'call, 'contex> {
pub name: &'call Expression,
pub args: &'call [Expression],
pub context: &'contex EvaluationContext,
pub struct ExternalCommand {
pub name: Spanned<String>,
pub args: Vec<String>,
pub last_expression: bool,
pub env_vars: HashMap<String, String>,
}
impl<'call, 'contex> ExternalCommand<'call, 'contex> {
pub fn try_new(
call: &'call Call,
context: &'contex EvaluationContext,
) -> Result<Self, ShellError> {
if call.positional.is_empty() {
return Err(ShellError::ExternalNotSupported(call.head));
}
Ok(Self {
name: &call.positional[0],
args: &call.positional[1..],
context,
last_expression: call.has_flag("last_expression"),
})
}
pub fn get_name(&self) -> Result<String, ShellError> {
let value = eval_expression(self.context, self.name)?;
value.as_string()
}
pub fn get_args(&self) -> Vec<String> {
self.args
.iter()
.filter_map(|expr| eval_expression(self.context, expr).ok())
.filter_map(|value| value.as_string().ok())
.collect()
}
pub fn run_with_input(&self, input: Value) -> Result<Value, ShellError> {
impl ExternalCommand {
pub fn run_with_input(
&self,
engine_state: &EngineState,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let mut process = self.create_command();
let ctrlc = engine_state.ctrlc.clone();
// TODO. We don't have a way to know the current directory
// This should be information from the EvaluationContex or EngineState
let path = env::current_dir().unwrap();
process.current_dir(path);
let envs = self.context.stack.get_env_vars();
process.envs(envs);
process.envs(&self.env_vars);
// If the external is not the last command, its output will get piped
// either as a string or binary
@ -101,11 +85,7 @@ impl<'call, 'contex> ExternalCommand<'call, 'contex> {
// If there is an input from the pipeline. The stdin from the process
// is piped so it can be used to send the input information
if let Value::String { .. } = input {
process.stdin(Stdio::piped());
}
if let Value::Stream { .. } = input {
if !matches!(input, PipelineData::Value(Value::Nothing { .. })) {
process.stdin(Stdio::piped());
}
@ -116,33 +96,29 @@ impl<'call, 'contex> ExternalCommand<'call, 'contex> {
)),
Ok(mut child) => {
// if there is a string or a stream, that is sent to the pipe std
match input {
Value::String { val, span: _ } => {
if let Some(mut stdin_write) = child.stdin.take() {
self.write_to_stdin(&mut stdin_write, val.as_bytes())?
}
}
Value::Binary { val, span: _ } => {
if let Some(mut stdin_write) = child.stdin.take() {
self.write_to_stdin(&mut stdin_write, &val)?
}
}
Value::Stream { stream, span: _ } => {
if let Some(mut stdin_write) = child.stdin.take() {
for value in stream {
match value {
Value::String { val, span: _ } => {
self.write_to_stdin(&mut stdin_write, val.as_bytes())?
if let Some(mut stdin_write) = child.stdin.take() {
std::thread::spawn(move || {
for value in input.into_iter() {
match value {
Value::String { val, span: _ } => {
if stdin_write.write(val.as_bytes()).is_err() {
return Ok(());
}
Value::Binary { val, span: _ } => {
self.write_to_stdin(&mut stdin_write, &val)?
}
Value::Binary { val, span: _ } => {
if stdin_write.write(&val).is_err() {
return Ok(());
}
}
x => {
if stdin_write.write(x.into_string().as_bytes()).is_err() {
return Err(());
}
_ => continue,
}
}
}
}
_ => (),
Ok(())
});
}
// If this external is not the last expression, then its output is piped to a channel
@ -185,12 +161,9 @@ impl<'call, 'contex> ExternalCommand<'call, 'contex> {
});
// The ValueStream is consumed by the next expression in the pipeline
Value::Stream {
stream: ValueStream(Rc::new(RefCell::new(ChannelReceiver::new(rx)))),
span: Span::unknown(),
}
ChannelReceiver::new(rx).into_pipeline_data(ctrlc)
} else {
Value::nothing()
PipelineData::new()
};
match child.wait() {
@ -212,8 +185,8 @@ impl<'call, 'contex> ExternalCommand<'call, 'contex> {
// for minimal builds cwd is unused
let mut process = CommandSys::new("cmd");
process.arg("/c");
process.arg(&self.get_name().unwrap());
for arg in self.get_args() {
process.arg(&self.name.item);
for arg in &self.args {
// Clean the args before we use them:
// https://stackoverflow.com/questions/1200235/how-to-pass-a-quoted-pipe-character-to-cmd-exe
// cmd.exe needs to have a caret to escape a pipe
@ -222,23 +195,12 @@ impl<'call, 'contex> ExternalCommand<'call, 'contex> {
}
process
} else {
let cmd_with_args = vec![self.get_name().unwrap(), self.get_args().join(" ")].join(" ");
let cmd_with_args = vec![self.name.item.clone(), self.args.join(" ")].join(" ");
let mut process = CommandSys::new("sh");
process.arg("-c").arg(cmd_with_args);
process
}
}
fn write_to_stdin(&self, stdin_write: &mut ChildStdin, val: &[u8]) -> Result<(), ShellError> {
if stdin_write.write(val).is_err() {
Err(ShellError::ExternalCommand(
"Error writing input to stdin".to_string(),
self.name.span,
))
} else {
Ok(())
}
}
}
// The piped data from stdout from the external command can be either String

17
crates/nu-command/src/system/sys.rs
View file

@ -1,10 +1,11 @@
use nu_protocol::{
ast::Call,
engine::{Command, EvaluationContext},
Example, ShellError, Signature, Span, Value,
engine::{Command, EngineState, Stack},
Example, IntoPipelineData, PipelineData, ShellError, Signature, Span, Value,
};
use sysinfo::{ComponentExt, DiskExt, NetworkExt, ProcessorExt, System, SystemExt, UserExt};
#[derive(Clone)]
pub struct Sys;
impl Command for Sys {
@ -24,10 +25,11 @@ impl Command for Sys {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
run_sys(call)
}
@ -40,7 +42,7 @@ impl Command for Sys {
}
}
fn run_sys(call: &Call) -> Result<Value, ShellError> {
fn run_sys(call: &Call) -> Result<PipelineData, ShellError> {
let span = call.head;
let mut sys = System::new();
@ -76,7 +78,8 @@ fn run_sys(call: &Call) -> Result<Value, ShellError> {
cols: headers,
vals: values,
span,
})
}
.into_pipeline_data())
}
pub fn trim_cstyle_null(s: String) -> String {

29
crates/nu-command/src/viewers/griddle.rs
View file

@ -2,12 +2,13 @@ use lscolors::{LsColors, Style};
use nu_engine::CallExt;
use nu_protocol::{
ast::{Call, PathMember},
engine::{Command, EvaluationContext},
Signature, Span, SyntaxShape, Value,
engine::{Command, EngineState, Stack},
IntoPipelineData, PipelineData, Signature, Span, SyntaxShape, Value,
};
use nu_term_grid::grid::{Alignment, Cell, Direction, Filling, Grid, GridOptions};
use terminal_size::{Height, Width};
#[derive(Clone)]
pub struct Griddle;
impl Command for Griddle {
@ -47,16 +48,17 @@ prints out the list properly."#
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
let width_param: Option<String> = call.get_flag(context, "width")?;
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let width_param: Option<String> = call.get_flag(engine_state, stack, "width")?;
let color_param: bool = call.has_flag("color");
let separator_param: Option<String> = call.get_flag(context, "separator")?;
let separator_param: Option<String> = call.get_flag(engine_state, stack, "separator")?;
match input {
Value::List { vals, .. } => {
PipelineData::Value(Value::List { vals, .. }) => {
// dbg!("value::list");
let data = convert_to_list2(vals);
if let Some(items) = data {
@ -68,10 +70,10 @@ prints out the list properly."#
separator_param,
))
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
Value::Stream { stream, .. } => {
PipelineData::Stream(stream) => {
// dbg!("value::stream");
let data = convert_to_list2(stream);
if let Some(items) = data {
@ -84,10 +86,10 @@ prints out the list properly."#
))
} else {
// dbg!(data);
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
Value::Record { cols, vals, .. } => {
PipelineData::Value(Value::Record { cols, vals, .. }) => {
// dbg!("value::record");
let mut items = vec![];
@ -118,7 +120,7 @@ fn create_grid_output2(
width_param: Option<String>,
color_param: bool,
separator_param: Option<String>,
) -> Value {
) -> PipelineData {
let ls_colors = LsColors::from_env().unwrap_or_default();
let cols = if let Some(col) = width_param {
col.parse::<u16>().unwrap_or(80)
@ -166,6 +168,7 @@ fn create_grid_output2(
span: call.head,
}
}
.into_pipeline_data()
}
fn convert_to_list2(iter: impl IntoIterator<Item = Value>) -> Option<Vec<(usize, String, String)>> {

33
crates/nu-command/src/viewers/table.rs
View file

@ -1,10 +1,11 @@
use nu_protocol::ast::{Call, PathMember};
use nu_protocol::engine::{Command, EvaluationContext};
use nu_protocol::{ShellError, Signature, Span, Value};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{IntoPipelineData, PipelineData, ShellError, Signature, Span, Value};
use nu_table::StyledString;
use std::collections::HashMap;
use terminal_size::{Height, Width};
#[derive(Clone)]
pub struct Table;
//NOTE: this is not a real implementation :D. It's just a simple one to test with until we port the real one.
@ -23,10 +24,11 @@ impl Command for Table {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let term_width = if let Some((Width(w), Height(_h))) = terminal_size::terminal_size() {
w as usize
} else {
@ -34,7 +36,7 @@ impl Command for Table {
};
match input {
Value::List { vals, .. } => {
PipelineData::Value(Value::List { vals, .. }) => {
let table = convert_to_table(vals)?;
if let Some(table) = table {
@ -43,12 +45,13 @@ impl Command for Table {
Ok(Value::String {
val: result,
span: call.head,
})
}
.into_pipeline_data())
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
Value::Stream { stream, .. } => {
PipelineData::Stream(stream) => {
let table = convert_to_table(stream)?;
if let Some(table) = table {
@ -57,12 +60,13 @@ impl Command for Table {
Ok(Value::String {
val: result,
span: call.head,
})
}
.into_pipeline_data())
} else {
Ok(Value::Nothing { span: call.head })
Ok(PipelineData::new())
}
}
Value::Record { cols, vals, .. } => {
PipelineData::Value(Value::Record { cols, vals, .. }) => {
let mut output = vec![];
for (c, v) in cols.into_iter().zip(vals.into_iter()) {
@ -89,9 +93,10 @@ impl Command for Table {
Ok(Value::String {
val: result,
span: call.head,
})
}
.into_pipeline_data())
}
Value::Error { error } => Err(error),
PipelineData::Value(Value::Error { error }) => Err(error),
x => Ok(x),
}
}

46
crates/nu-engine/src/call_ext.rs
View file

@ -1,37 +1,50 @@
use nu_protocol::{ast::Call, engine::EvaluationContext, ShellError};
use nu_protocol::{
ast::Call,
engine::{EngineState, Stack},
ShellError,
};
use crate::{eval_expression, FromValue};
pub trait CallExt {
fn get_flag<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
name: &str,
) -> Result<Option<T>, ShellError>;
fn rest<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
starting_pos: usize,
) -> Result<Vec<T>, ShellError>;
fn opt<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
pos: usize,
) -> Result<Option<T>, ShellError>;
fn req<T: FromValue>(&self, context: &EvaluationContext, pos: usize) -> Result<T, ShellError>;
fn req<T: FromValue>(
&self,
engine_state: &EngineState,
stack: &mut Stack,
pos: usize,
) -> Result<T, ShellError>;
}
impl CallExt for Call {
fn get_flag<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
name: &str,
) -> Result<Option<T>, ShellError> {
if let Some(expr) = self.get_flag_expr(name) {
let result = eval_expression(context, &expr)?;
let result = eval_expression(engine_state, stack, &expr)?;
FromValue::from_value(&result).map(Some)
} else {
Ok(None)
@ -40,13 +53,14 @@ impl CallExt for Call {
fn rest<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
starting_pos: usize,
) -> Result<Vec<T>, ShellError> {
let mut output = vec![];
for expr in self.positional.iter().skip(starting_pos) {
let result = eval_expression(context, expr)?;
let result = eval_expression(engine_state, stack, expr)?;
output.push(FromValue::from_value(&result)?);
}
@ -55,20 +69,26 @@ impl CallExt for Call {
fn opt<T: FromValue>(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
pos: usize,
) -> Result<Option<T>, ShellError> {
if let Some(expr) = self.nth(pos) {
let result = eval_expression(context, &expr)?;
let result = eval_expression(engine_state, stack, &expr)?;
FromValue::from_value(&result).map(Some)
} else {
Ok(None)
}
}
fn req<T: FromValue>(&self, context: &EvaluationContext, pos: usize) -> Result<T, ShellError> {
fn req<T: FromValue>(
&self,
engine_state: &EngineState,
stack: &mut Stack,
pos: usize,
) -> Result<T, ShellError> {
if let Some(expr) = self.nth(pos) {
let result = eval_expression(context, &expr)?;
let result = eval_expression(engine_state, stack, &expr)?;
FromValue::from_value(&result)
} else {
Err(ShellError::AccessBeyondEnd(

32
crates/nu-engine/src/documentation.rs
View file

@ -1,5 +1,5 @@
use itertools::Itertools;
use nu_protocol::{engine::EvaluationContext, Example, Signature, Span, Value};
use nu_protocol::{engine::EngineState, Example, Signature, Span, Value};
use std::collections::HashMap;
const COMMANDS_DOCS_DIR: &str = "docs/commands";
@ -22,12 +22,10 @@ impl Default for DocumentationConfig {
}
}
fn generate_doc(name: &str, context: &EvaluationContext) -> (Vec<String>, Vec<Value>) {
fn generate_doc(name: &str, engine_state: &EngineState) -> (Vec<String>, Vec<Value>) {
let mut cols = vec![];
let mut vals = vec![];
let engine_state = context.engine_state.borrow();
let command = engine_state
.find_decl(name.as_bytes())
.map(|decl_id| engine_state.get_decl(decl_id))
@ -58,7 +56,7 @@ fn generate_doc(name: &str, context: &EvaluationContext) -> (Vec<String>, Vec<Va
val: get_documentation(
&command.signature(),
&command.examples(),
context,
engine_state,
&DocumentationConfig {
no_subcommands: true,
no_color: true,
@ -72,8 +70,8 @@ fn generate_doc(name: &str, context: &EvaluationContext) -> (Vec<String>, Vec<Va
}
// generate_docs gets the documentation from each command and returns a Table as output
pub fn generate_docs(context: &EvaluationContext) -> Value {
let signatures = context.get_signatures();
pub fn generate_docs(engine_state: &EngineState) -> Value {
let signatures = engine_state.get_signatures();
// cmap will map parent commands to it's subcommands e.g. to -> [to csv, to yaml, to bson]
let mut cmap: HashMap<String, Vec<String>> = HashMap::new();
@ -99,11 +97,11 @@ pub fn generate_docs(context: &EvaluationContext) -> Value {
if !cmap.contains_key(&sig.name) {
continue;
}
let mut row_entries = generate_doc(&sig.name, context);
let mut row_entries = generate_doc(&sig.name, engine_state);
// Iterate over all the subcommands of the parent command
let mut sub_table = Vec::new();
for sub_name in cmap.get(&sig.name).unwrap_or(&Vec::new()) {
let (cols, vals) = generate_doc(sub_name, context);
let (cols, vals) = generate_doc(sub_name, engine_state);
sub_table.push(Value::Record {
cols,
vals,
@ -149,7 +147,7 @@ fn retrieve_doc_link(name: &str) -> Option<String> {
pub fn get_documentation(
sig: &Signature,
examples: &[Example],
context: &EvaluationContext,
engine_state: &EngineState,
config: &DocumentationConfig,
) -> String {
let cmd_name = &sig.name;
@ -169,7 +167,7 @@ pub fn get_documentation(
let mut subcommands = vec![];
if !config.no_subcommands {
let signatures = context.get_signatures();
let signatures = engine_state.get_signatures();
for sig in signatures {
if sig.name.starts_with(&format!("{} ", cmd_name)) {
subcommands.push(format!(" {} - {}", sig.name, sig.usage));
@ -325,15 +323,11 @@ fn get_flags_section(signature: &Signature) -> String {
long_desc
}
pub fn get_brief_help(
sig: &Signature,
examples: &[Example],
context: &EvaluationContext,
) -> String {
pub fn get_brief_help(sig: &Signature, examples: &[Example], engine_state: &EngineState) -> String {
get_documentation(
sig,
examples,
context,
engine_state,
&DocumentationConfig {
no_subcommands: false,
no_color: false,
@ -342,6 +336,6 @@ pub fn get_brief_help(
)
}
pub fn get_full_help(sig: &Signature, examples: &[Example], context: &EvaluationContext) -> String {
get_documentation(sig, examples, context, &DocumentationConfig::default())
pub fn get_full_help(sig: &Signature, examples: &[Example], engine_state: &EngineState) -> String {
get_documentation(sig, examples, engine_state, &DocumentationConfig::default())
}

122
crates/nu-engine/src/eval.rs
View file

@ -1,6 +1,8 @@
use nu_protocol::ast::{Block, Call, Expr, Expression, Operator, Statement};
use nu_protocol::engine::EvaluationContext;
use nu_protocol::{Range, ShellError, Span, Spanned, Type, Unit, Value};
use nu_protocol::engine::{EngineState, Stack};
use nu_protocol::{
IntoPipelineData, PipelineData, Range, ShellError, Span, Spanned, Type, Unit, Value,
};
use crate::get_full_help;
@ -16,29 +18,36 @@ pub fn eval_operator(op: &Expression) -> Result<Operator, ShellError> {
}
}
fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<Value, ShellError> {
let engine_state = context.engine_state.borrow();
fn eval_call(
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let decl = engine_state.get_decl(call.decl_id);
if call.named.iter().any(|(flag, _)| flag.item == "help") {
let full_help = get_full_help(&decl.signature(), &decl.examples(), context);
let full_help = get_full_help(&decl.signature(), &decl.examples(), engine_state);
Ok(Value::String {
val: full_help,
span: call.head,
})
}
.into_pipeline_data())
} else if let Some(block_id) = decl.get_block_id() {
let state = context.enter_scope();
let block = engine_state.get_block(block_id);
let mut stack = stack.collect_captures(&block.captures);
for (arg, param) in call.positional.iter().zip(
decl.signature()
.required_positional
.iter()
.chain(decl.signature().optional_positional.iter()),
) {
let result = eval_expression(&state, arg)?;
let result = eval_expression(engine_state, &mut stack, arg)?;
let var_id = param
.var_id
.expect("internal error: all custom parameters must have var_ids");
state.add_var(var_id, result);
stack.add_var(var_id, result);
}
if let Some(rest_positional) = decl.signature().rest_positional {
@ -48,7 +57,7 @@ fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<V
decl.signature().required_positional.len()
+ decl.signature().optional_positional.len(),
) {
let result = eval_expression(&state, arg)?;
let result = eval_expression(engine_state, &mut stack, arg)?;
rest_items.push(result);
}
@ -58,7 +67,7 @@ fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<V
Span::unknown()
};
state.add_var(
stack.add_var(
rest_positional
.var_id
.expect("Internal error: rest positional parameter lacks var_id"),
@ -75,11 +84,11 @@ fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<V
for call_named in &call.named {
if call_named.0.item == named.long {
if let Some(arg) = &call_named.1 {
let result = eval_expression(&state, arg)?;
let result = eval_expression(engine_state, &mut stack, arg)?;
state.add_var(var_id, result);
stack.add_var(var_id, result);
} else {
state.add_var(
stack.add_var(
var_id,
Value::Bool {
val: true,
@ -92,7 +101,7 @@ fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<V
}
if !found && named.arg.is_none() {
state.add_var(
stack.add_var(
var_id,
Value::Bool {
val: false,
@ -102,24 +111,21 @@ fn eval_call(context: &EvaluationContext, call: &Call, input: Value) -> Result<V
}
}
}
let engine_state = state.engine_state.borrow();
let block = engine_state.get_block(block_id);
eval_block(&state, block, input)
eval_block(engine_state, &mut stack, block, input)
} else {
decl.run(context, call, input)
decl.run(engine_state, stack, call, input)
}
}
fn eval_external(
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
name: &str,
name_span: &Span,
args: &[Expression],
input: Value,
input: PipelineData,
last_expression: bool,
) -> Result<Value, ShellError> {
let engine_state = context.engine_state.borrow();
) -> Result<PipelineData, ShellError> {
let decl_id = engine_state
.find_decl("run_external".as_bytes())
.ok_or_else(|| ShellError::ExternalNotSupported(*name_span))?;
@ -149,11 +155,12 @@ fn eval_external(
))
}
command.run(context, &call, input)
command.run(engine_state, stack, &call, input)
}
pub fn eval_expression(
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
expr: &Expression,
) -> Result<Value, ShellError> {
match &expr.expr {
@ -169,13 +176,13 @@ pub fn eval_expression(
val: *f,
span: expr.span,
}),
Expr::ValueWithUnit(e, unit) => match eval_expression(context, e)? {
Expr::ValueWithUnit(e, unit) => match eval_expression(engine_state, stack, e)? {
Value::Int { val, .. } => Ok(compute(val, unit.item, unit.span)),
_ => Err(ShellError::CantConvert("unit value".into(), e.span)),
},
Expr::Range(from, next, to, operator) => {
let from = if let Some(f) = from {
eval_expression(context, f)?
eval_expression(engine_state, stack, f)?
} else {
Value::Nothing {
span: Span::unknown(),
@ -183,7 +190,7 @@ pub fn eval_expression(
};
let next = if let Some(s) = next {
eval_expression(context, s)?
eval_expression(engine_state, stack, s)?
} else {
Value::Nothing {
span: Span::unknown(),
@ -191,7 +198,7 @@ pub fn eval_expression(
};
let to = if let Some(t) = to {
eval_expression(context, t)?
eval_expression(engine_state, stack, t)?
} else {
Value::Nothing {
span: Span::unknown(),
@ -203,29 +210,43 @@ pub fn eval_expression(
span: expr.span,
})
}
Expr::Var(var_id) => context
Expr::Var(var_id) => stack
.get_var(*var_id)
.map_err(move |_| ShellError::VariableNotFoundAtRuntime(expr.span)),
Expr::VarDecl(_) => Ok(Value::Nothing { span: expr.span }),
Expr::CellPath(cell_path) => Ok(Value::CellPath {
val: cell_path.clone(),
span: expr.span,
}),
Expr::FullCellPath(cell_path) => {
let value = eval_expression(context, &cell_path.head)?;
let value = eval_expression(engine_state, stack, &cell_path.head)?;
value.follow_cell_path(&cell_path.tail)
}
Expr::RowCondition(_, expr) => eval_expression(context, expr),
Expr::Call(call) => eval_call(context, call, Value::nothing()),
Expr::RowCondition(_, expr) => eval_expression(engine_state, stack, expr),
Expr::Call(call) => {
// FIXME: protect this collect with ctrl-c
Ok(eval_call(engine_state, stack, call, PipelineData::new())?.into_value())
}
Expr::ExternalCall(name, span, args) => {
eval_external(context, name, span, args, Value::nothing(), true)
// FIXME: protect this collect with ctrl-c
Ok(eval_external(
engine_state,
stack,
name,
span,
args,
PipelineData::new(),
true,
)?
.into_value())
}
Expr::Operator(_) => Ok(Value::Nothing { span: expr.span }),
Expr::BinaryOp(lhs, op, rhs) => {
let op_span = op.span;
let lhs = eval_expression(context, lhs)?;
let lhs = eval_expression(engine_state, stack, lhs)?;
let op = eval_operator(op)?;
let rhs = eval_expression(context, rhs)?;
let rhs = eval_expression(engine_state, stack, rhs)?;
match op {
Operator::Plus => lhs.add(op_span, &rhs),
@ -249,11 +270,10 @@ pub fn eval_expression(
}
}
Expr::Subexpression(block_id) => {
let engine_state = context.engine_state.borrow();
let block = engine_state.get_block(*block_id);
let state = context.enter_scope();
eval_block(&state, block, Value::nothing())
// FIXME: protect this collect with ctrl-c
Ok(eval_block(engine_state, stack, block, PipelineData::new())?.into_value())
}
Expr::Block(block_id) => Ok(Value::Block {
val: *block_id,
@ -262,7 +282,7 @@ pub fn eval_expression(
Expr::List(x) => {
let mut output = vec![];
for expr in x {
output.push(eval_expression(context, expr)?);
output.push(eval_expression(engine_state, stack, expr)?);
}
Ok(Value::List {
vals: output,
@ -272,14 +292,14 @@ pub fn eval_expression(
Expr::Table(headers, vals) => {
let mut output_headers = vec![];
for expr in headers {
output_headers.push(eval_expression(context, expr)?.as_string()?);
output_headers.push(eval_expression(engine_state, stack, expr)?.as_string()?);
}
let mut output_rows = vec![];
for val in vals {
let mut row = vec![];
for expr in val {
row.push(eval_expression(context, expr)?);
row.push(eval_expression(engine_state, stack, expr)?);
}
output_rows.push(Value::Record {
cols: output_headers.clone(),
@ -292,7 +312,7 @@ pub fn eval_expression(
span: expr.span,
})
}
Expr::Keyword(_, _, expr) => eval_expression(context, expr),
Expr::Keyword(_, _, expr) => eval_expression(engine_state, stack, expr),
Expr::String(s) => Ok(Value::String {
val: s.clone(),
span: expr.span,
@ -311,10 +331,11 @@ pub fn eval_expression(
}
pub fn eval_block(
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
block: &Block,
mut input: Value,
) -> Result<Value, ShellError> {
mut input: PipelineData,
) -> Result<PipelineData, ShellError> {
for stmt in block.stmts.iter() {
if let Statement::Pipeline(pipeline) = stmt {
for (i, elem) in pipeline.expressions.iter().enumerate() {
@ -323,14 +344,15 @@ pub fn eval_block(
expr: Expr::Call(call),
..
} => {
input = eval_call(context, call, input)?;
input = eval_call(engine_state, stack, call, input)?;
}
Expression {
expr: Expr::ExternalCall(name, name_span, args),
..
} => {
input = eval_external(
context,
engine_state,
stack,
name,
name_span,
args,
@ -340,7 +362,7 @@ pub fn eval_block(
}
elem => {
input = eval_expression(context, elem)?;
input = eval_expression(engine_state, stack, elem)?.into_pipeline_data();
}
}
}

2
crates/nu-parser/src/flatten.rs
View file

@ -194,7 +194,7 @@ pub fn flatten_expression(
}
output
}
Expr::Var(_) => {
Expr::Var(_) | Expr::VarDecl(_) => {
vec![(expr.span, FlatShape::Variable)]
}
}

2
crates/nu-parser/src/lib.rs
View file

@ -13,4 +13,4 @@ pub use lite_parse::{lite_parse, LiteBlock};
pub use parse_keywords::{
parse_alias, parse_def, parse_def_predecl, parse_let, parse_module, parse_use,
};
pub use parser::{parse, Import, VarDecl};
pub use parser::{find_captures_in_expr, parse, Import, VarDecl};

10
crates/nu-parser/src/parse_keywords.rs
View file

@ -71,7 +71,7 @@ pub fn parse_def(
named: vec![],
});
let call = if let Some(name_span) = spans.get(1) {
if let Some(name_span) = spans.get(1) {
let (name_expr, err) = parse_string(working_set, *name_span);
error = error.or(err);
@ -142,8 +142,6 @@ pub fn parse_def(
))
});
}
call
} else {
let err_span = Span {
start: name_span.end,
@ -152,8 +150,6 @@ pub fn parse_def(
error = error
.or_else(|| Some(ParseError::MissingPositional("parameters".into(), err_span)));
call
}
} else {
let err_span = Span {
@ -167,9 +163,7 @@ pub fn parse_def(
err_span,
))
});
call
};
}
(
Statement::Pipeline(Pipeline::from_vec(vec![Expression {

182
crates/nu-parser/src/parser.rs
View file

@ -1806,7 +1806,7 @@ pub fn parse_var_with_opt_type(
(
Expression {
expr: Expr::Var(id),
expr: Expr::VarDecl(id),
span: span(&spans[*spans_idx - 1..*spans_idx + 1]),
ty,
custom_completion: None,
@ -1817,7 +1817,7 @@ pub fn parse_var_with_opt_type(
let id = working_set.add_variable(bytes[0..(bytes.len() - 1)].to_vec(), Type::Unknown);
(
Expression {
expr: Expr::Var(id),
expr: Expr::VarDecl(id),
span: spans[*spans_idx],
ty: Type::Unknown,
custom_completion: None,
@ -1830,7 +1830,7 @@ pub fn parse_var_with_opt_type(
(
Expression {
expr: Expr::Var(id),
expr: Expr::VarDecl(id),
span: span(&spans[*spans_idx..*spans_idx + 1]),
ty: Type::Unknown,
custom_completion: None,
@ -2574,6 +2574,11 @@ pub fn parse_block_expression(
}
}
let mut seen = vec![];
let captures = find_captures_in_block(working_set, &output, &mut seen);
output.captures = captures;
working_set.exit_scope();
let block_id = working_set.add_block(output);
@ -3041,6 +3046,177 @@ pub fn parse_block(
(block, error)
}
fn find_captures_in_block(
working_set: &StateWorkingSet,
block: &Block,
seen: &mut Vec<VarId>,
) -> Vec<VarId> {
let mut output = vec![];
for flag in &block.signature.named {
if let Some(var_id) = flag.var_id {
seen.push(var_id);
}
}
for positional in &block.signature.required_positional {
if let Some(var_id) = positional.var_id {
seen.push(var_id);
}
}
for positional in &block.signature.optional_positional {
if let Some(var_id) = positional.var_id {
seen.push(var_id);
}
}
for positional in &block.signature.rest_positional {
if let Some(var_id) = positional.var_id {
seen.push(var_id);
}
}
for stmt in &block.stmts {
match stmt {
Statement::Pipeline(pipeline) => {
let result = find_captures_in_pipeline(working_set, pipeline, seen);
output.extend(&result);
}
Statement::Declaration(_) => {}
}
}
output
}
fn find_captures_in_pipeline(
working_set: &StateWorkingSet,
pipeline: &Pipeline,
seen: &mut Vec<VarId>,
) -> Vec<VarId> {
let mut output = vec![];
for expr in &pipeline.expressions {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
output
}
pub fn find_captures_in_expr(
working_set: &StateWorkingSet,
expr: &Expression,
seen: &mut Vec<VarId>,
) -> Vec<VarId> {
let mut output = vec![];
match &expr.expr {
Expr::BinaryOp(lhs, _, rhs) => {
let lhs_result = find_captures_in_expr(working_set, lhs, seen);
let rhs_result = find_captures_in_expr(working_set, rhs, seen);
output.extend(&lhs_result);
output.extend(&rhs_result);
}
Expr::Block(block_id) => {
let block = working_set.get_block(*block_id);
let result = find_captures_in_block(working_set, block, seen);
output.extend(&result);
}
Expr::Bool(_) => {}
Expr::Call(call) => {
for named in &call.named {
if let Some(arg) = &named.1 {
let result = find_captures_in_expr(working_set, arg, seen);
output.extend(&result);
}
}
for positional in &call.positional {
let result = find_captures_in_expr(working_set, positional, seen);
output.extend(&result);
}
}
Expr::CellPath(_) => {}
Expr::ExternalCall(_, _, exprs) => {
for expr in exprs {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
}
Expr::Filepath(_) => {}
Expr::Float(_) => {}
Expr::FullCellPath(cell_path) => {
let result = find_captures_in_expr(working_set, &cell_path.head, seen);
output.extend(&result);
}
Expr::Garbage => {}
Expr::GlobPattern(_) => {}
Expr::Int(_) => {}
Expr::Keyword(_, _, expr) => {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
Expr::List(exprs) => {
for expr in exprs {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
}
Expr::Operator(_) => {}
Expr::Range(expr1, expr2, expr3, _) => {
if let Some(expr) = expr1 {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
if let Some(expr) = expr2 {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
if let Some(expr) = expr3 {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
}
Expr::RowCondition(var_id, expr) => {
seen.push(*var_id);
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
Expr::Signature(_) => {}
Expr::String(_) => {}
Expr::Subexpression(block_id) => {
let block = working_set.get_block(*block_id);
let result = find_captures_in_block(working_set, block, seen);
output.extend(&result);
}
Expr::Table(headers, values) => {
for header in headers {
let result = find_captures_in_expr(working_set, header, seen);
output.extend(&result);
}
for row in values {
for cell in row {
let result = find_captures_in_expr(working_set, cell, seen);
output.extend(&result);
}
}
}
Expr::ValueWithUnit(expr, _) => {
let result = find_captures_in_expr(working_set, expr, seen);
output.extend(&result);
}
Expr::Var(var_id) => {
if !seen.contains(var_id) {
output.push(*var_id);
}
}
Expr::VarDecl(var_id) => {
seen.push(*var_id);
}
}
output
}
// Parses a vector of u8 to create an AST Block. If a file name is given, then
// the name is stored in the working set. When parsing a source without a file
// name, the source of bytes is stored as "source"

10
crates/nu-parser/tests/test_parser.rs
View file

@ -2,11 +2,12 @@ use nu_parser::ParseError;
use nu_parser::*;
use nu_protocol::{
ast::{Expr, Expression, Pipeline, Statement},
engine::{Command, EngineState, StateWorkingSet},
engine::{Command, EngineState, Stack, StateWorkingSet},
Signature, SyntaxShape,
};
#[cfg(test)]
#[derive(Clone)]
pub struct Let;
#[cfg(test)]
@ -31,10 +32,11 @@ impl Command for Let {
fn run(
&self,
_context: &nu_protocol::engine::EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &nu_protocol::ast::Call,
_input: nu_protocol::Value,
) -> Result<nu_protocol::Value, nu_protocol::ShellError> {
_input: nu_protocol::PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
todo!()
}
}

1
crates/nu-protocol/Cargo.toml
View file

@ -12,3 +12,4 @@ serde = {version = "1.0.130", features = ["derive"]}
chrono = { version="0.4.19", features=["serde"] }
chrono-humanize = "0.2.1"
byte-unit = "4.0.9"
im = "15.0.0"

6
crates/nu-protocol/src/ast/block.rs
View file

@ -1,6 +1,6 @@
use std::ops::{Index, IndexMut};
use crate::{DeclId, Signature};
use crate::{DeclId, Signature, VarId};
use super::Statement;
@ -9,6 +9,7 @@ pub struct Block {
pub signature: Box<Signature>,
pub stmts: Vec<Statement>,
pub exports: Vec<(Vec<u8>, DeclId)>, // Assuming just defs for now
pub captures: Vec<VarId>,
}
impl Block {
@ -47,6 +48,7 @@ impl Block {
signature: Box::new(Signature::new("")),
stmts: vec![],
exports: vec![],
captures: vec![],
}
}
@ -55,6 +57,7 @@ impl Block {
signature: self.signature,
stmts: self.stmts,
exports,
captures: self.captures,
}
}
}
@ -68,6 +71,7 @@ where
signature: Box::new(Signature::new("")),
stmts: stmts.collect(),
exports: vec![],
captures: vec![],
}
}
}

1
crates/nu-protocol/src/ast/expr.rs
View file

@ -13,6 +13,7 @@ pub enum Expr {
RangeOperator,
),
Var(VarId),
VarDecl(VarId),
Call(Box<Call>),
ExternalCall(String, Span, Vec<Expression>),
Operator(Operator),

1
crates/nu-protocol/src/ast/expression.rs
View file

@ -77,6 +77,7 @@ impl Expression {
pub fn as_var(&self) -> Option<VarId> {
match self.expr {
Expr::Var(var_id) => Some(var_id),
Expr::VarDecl(var_id) => Some(var_id),
_ => None,
}
}

32
crates/nu-protocol/src/engine/command.rs
View file

@ -1,8 +1,8 @@
use crate::{ast::Call, value::Value, BlockId, Example, ShellError, Signature};
use crate::{ast::Call, BlockId, Example, PipelineData, ShellError, Signature};
use super::EvaluationContext;
use super::{EngineState, Stack};
pub trait Command: Send + Sync {
pub trait Command: Send + Sync + CommandClone {
fn name(&self) -> &str;
fn signature(&self) -> Signature {
@ -17,10 +17,11 @@ pub trait Command: Send + Sync {
fn run(
&self,
context: &EvaluationContext,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: Value,
) -> Result<Value, ShellError>;
input: PipelineData,
) -> Result<PipelineData, ShellError>;
fn is_binary(&self) -> bool {
false
@ -55,3 +56,22 @@ pub trait Command: Send + Sync {
None
}
}
pub trait CommandClone {
fn clone_box(&self) -> Box<dyn Command>;
}
impl<T> CommandClone for T
where
T: 'static + Command + Clone,
{
fn clone_box(&self) -> Box<dyn Command> {
Box::new(self.clone())
}
}
impl Clone for Box<dyn Command> {
fn clone(&self) -> Box<dyn Command> {
self.clone_box()
}
}

101
crates/nu-protocol/src/engine/engine_state.rs
View file

@ -1,15 +1,20 @@
use super::Command;
use crate::{ast::Block, BlockId, DeclId, Example, Signature, Span, Type, VarId};
use core::panic;
use std::{collections::HashMap, slice::Iter};
use std::{
collections::HashMap,
sync::{atomic::AtomicBool, Arc},
};
#[derive(Clone)]
pub struct EngineState {
files: Vec<(String, usize, usize)>,
file_contents: Vec<u8>,
vars: Vec<Type>,
decls: Vec<Box<dyn Command>>,
blocks: Vec<Block>,
pub scope: Vec<ScopeFrame>,
files: im::Vector<(String, usize, usize)>,
file_contents: im::Vector<(Vec<u8>, usize, usize)>,
vars: im::Vector<Type>,
decls: im::Vector<Box<dyn Command + 'static>>,
blocks: im::Vector<Block>,
pub scope: im::Vector<ScopeFrame>,
pub ctrlc: Option<Arc<AtomicBool>>,
}
// Tells whether a decl etc. is visible or not
@ -53,7 +58,7 @@ impl Visibility {
}
}
#[derive(Debug)]
#[derive(Debug, Clone)]
pub struct ScopeFrame {
pub vars: HashMap<Vec<u8>, VarId>,
predecls: HashMap<Vec<u8>, DeclId>, // temporary storage for predeclarations
@ -95,12 +100,13 @@ impl Default for EngineState {
impl EngineState {
pub fn new() -> Self {
Self {
files: vec![],
file_contents: vec![],
vars: vec![],
decls: vec![],
blocks: vec![],
scope: vec![ScopeFrame::new()],
files: im::vector![],
file_contents: im::vector![],
vars: im::vector![],
decls: im::vector![],
blocks: im::vector![],
scope: im::vector![ScopeFrame::new()],
ctrlc: None,
}
}
@ -112,7 +118,7 @@ impl EngineState {
this.vars.extend(delta.vars);
this.blocks.extend(delta.blocks);
if let Some(last) = this.scope.last_mut() {
if let Some(last) = this.scope.back_mut() {
let first = delta.scope.remove(0);
for item in first.decls.into_iter() {
last.decls.insert(item.0, item.1);
@ -165,8 +171,10 @@ impl EngineState {
}
pub fn print_contents(&self) {
let string = String::from_utf8_lossy(&self.file_contents);
println!("{}", string);
for (contents, _, _) in self.file_contents.iter() {
let string = String::from_utf8_lossy(contents);
println!("{}", string);
}
}
pub fn find_decl(&self, name: &[u8]) -> Option<DeclId> {
@ -200,7 +208,13 @@ impl EngineState {
}
pub fn get_span_contents(&self, span: &Span) -> &[u8] {
&self.file_contents[span.start..span.end]
for (contents, start, finish) in &self.file_contents {
if span.start >= *start && span.end <= *finish {
return &contents[(span.start - start)..(span.end - start)];
}
}
panic!("internal error: span missing in file contents cache")
}
pub fn get_var(&self, var_id: VarId) -> &Type {
@ -253,10 +267,14 @@ impl EngineState {
}
pub fn next_span_start(&self) -> usize {
self.file_contents.len()
if let Some((_, _, last)) = self.file_contents.last() {
*last
} else {
0
}
}
pub fn files(&self) -> Iter<(String, usize, usize)> {
pub fn files(&self) -> impl Iterator<Item = &(String, usize, usize)> {
self.files.iter()
}
@ -273,8 +291,11 @@ impl EngineState {
pub fn get_file_source(&self, file_id: usize) -> String {
for file in self.files.iter().enumerate() {
if file.0 == file_id {
let output =
String::from_utf8_lossy(&self.file_contents[file.1 .1..file.1 .2]).to_string();
let contents = self.get_span_contents(&Span {
start: file.1 .1,
end: file.1 .2,
});
let output = String::from_utf8_lossy(contents).to_string();
return output;
}
@ -286,12 +307,13 @@ impl EngineState {
#[allow(unused)]
pub(crate) fn add_file(&mut self, filename: String, contents: Vec<u8>) -> usize {
let next_span_start = self.next_span_start();
let next_span_end = next_span_start + contents.len();
self.file_contents.extend(&contents);
self.file_contents
.push_back((contents, next_span_start, next_span_end));
let next_span_end = self.next_span_start();
self.files.push((filename, next_span_start, next_span_end));
self.files
.push_back((filename, next_span_start, next_span_end));
self.num_files() - 1
}
@ -304,7 +326,7 @@ pub struct StateWorkingSet<'a> {
pub struct StateDelta {
files: Vec<(String, usize, usize)>,
pub(crate) file_contents: Vec<u8>,
pub(crate) file_contents: Vec<(Vec<u8>, usize, usize)>,
vars: Vec<Type>, // indexed by VarId
decls: Vec<Box<dyn Command>>, // indexed by DeclId
blocks: Vec<Block>, // indexed by BlockId
@ -481,7 +503,13 @@ impl<'a> StateWorkingSet<'a> {
}
pub fn next_span_start(&self) -> usize {
self.permanent_state.next_span_start() + self.delta.file_contents.len()
let permanent_span_start = self.permanent_state.next_span_start();
if let Some((_, _, last)) = self.delta.file_contents.last() {
permanent_span_start + *last
} else {
permanent_span_start
}
}
pub fn global_span_offset(&self) -> usize {
@ -520,10 +548,11 @@ impl<'a> StateWorkingSet<'a> {
pub fn add_file(&mut self, filename: String, contents: &[u8]) -> usize {
let next_span_start = self.next_span_start();
let next_span_end = next_span_start + contents.len();
self.delta.file_contents.extend(contents);
let next_span_end = self.next_span_start();
self.delta
.file_contents
.push((contents.to_vec(), next_span_start, next_span_end));
self.delta
.files
@ -535,10 +564,16 @@ impl<'a> StateWorkingSet<'a> {
pub fn get_span_contents(&self, span: Span) -> &[u8] {
let permanent_end = self.permanent_state.next_span_start();
if permanent_end <= span.start {
&self.delta.file_contents[(span.start - permanent_end)..(span.end - permanent_end)]
for (contents, start, finish) in &self.delta.file_contents {
if (span.start >= *start) && (span.end <= *finish) {
return &contents[(span.start - permanent_end)..(span.end - permanent_end)];
}
}
} else {
&self.permanent_state.file_contents[span.start..span.end]
return self.permanent_state.get_span_contents(&span);
}
panic!("internal error: missing span contents in file cache")
}
pub fn enter_scope(&mut self) {

137
crates/nu-protocol/src/engine/evaluation_context.rs
View file

@ -1,137 +0,0 @@
use super::EngineState;
use std::{cell::RefCell, collections::HashMap, rc::Rc};
use crate::{Example, ShellError, Signature, Value, VarId};
#[derive(Clone)]
pub struct EvaluationContext {
pub engine_state: Rc<RefCell<EngineState>>,
pub stack: Stack,
}
impl EvaluationContext {
pub fn get_var(&self, var_id: VarId) -> Result<Value, ShellError> {
self.stack.get_var(var_id)
}
pub fn enter_scope(&self) -> EvaluationContext {
Self {
engine_state: self.engine_state.clone(),
stack: self.stack.clone().enter_scope(),
}
}
pub fn add_var(&self, var_id: VarId, value: Value) {
// We need to make values concreate before we assign them to variables, as stream values
// will drain and remain drained.
//
// TODO: find a good home for converting a stream->list when storing into a variable
// TODO: add ctrl-c support when setting a var
let value = match value {
Value::Stream { stream, span } => Value::List {
vals: stream.collect(),
span,
},
x => x,
};
self.stack.add_var(var_id, value);
}
pub fn add_env_var(&self, var: String, value: String) {
self.stack.add_env_var(var, value);
}
pub fn print_stack(&self) {
self.stack.print_stack();
}
pub fn get_signatures(&self) -> Vec<Signature> {
self.engine_state.borrow().get_signatures()
}
pub fn get_signatures_with_examples(&self) -> Vec<(Signature, Vec<Example>)> {
self.engine_state.borrow().get_signatures_with_examples()
}
}
#[derive(Debug)]
pub struct StackFrame {
pub vars: HashMap<VarId, Value>,
pub env_vars: HashMap<String, String>,
pub parent: Option<Stack>,
}
#[derive(Clone, Debug)]
pub struct Stack(Rc<RefCell<StackFrame>>);
impl Default for Stack {
fn default() -> Self {
Self::new()
}
}
impl Stack {
pub fn new() -> Stack {
Stack(Rc::new(RefCell::new(StackFrame {
vars: HashMap::new(),
env_vars: HashMap::new(),
parent: None,
})))
}
pub fn get_var(&self, var_id: VarId) -> Result<Value, ShellError> {
let this = self.0.borrow();
match this.vars.get(&var_id) {
Some(v) => Ok(v.clone()),
_ => {
if let Some(parent) = &this.parent {
parent.get_var(var_id)
} else {
Err(ShellError::InternalError("variable not found".into()))
}
}
}
}
pub fn add_var(&self, var_id: VarId, value: Value) {
let mut this = self.0.borrow_mut();
this.vars.insert(var_id, value);
}
pub fn add_env_var(&self, var: String, value: String) {
let mut this = self.0.borrow_mut();
this.env_vars.insert(var, value);
}
pub fn enter_scope(self) -> Stack {
Stack(Rc::new(RefCell::new(StackFrame {
vars: HashMap::new(),
env_vars: HashMap::new(),
parent: Some(self),
})))
}
pub fn get_env_vars(&self) -> HashMap<String, String> {
self.0.borrow().env_vars.clone()
}
pub fn get_env_var(&self, name: &str) -> Option<String> {
self.0.borrow().env_vars.get(name).cloned()
}
pub fn print_stack(&self) {
println!("===frame===");
println!("vars:");
for (var, val) in &self.0.borrow().vars {
println!(" {}: {:?}", var, val);
}
println!("env vars:");
for (var, val) in &self.0.borrow().env_vars {
println!(" {}: {:?}", var, val);
}
if let Some(parent) = &self.0.borrow().parent {
parent.print_stack()
}
}
}

4
crates/nu-protocol/src/engine/mod.rs
View file

@ -1,9 +1,9 @@
mod call_info;
mod command;
mod engine_state;
mod evaluation_context;
mod stack;
pub use call_info::*;
pub use command::*;
pub use engine_state::*;
pub use evaluation_context::*;
pub use stack::*;

97
crates/nu-protocol/src/engine/stack.rs Normal file
View file

@ -0,0 +1,97 @@
use std::collections::HashMap;
use crate::{ShellError, Value, VarId};
#[derive(Debug, Clone)]
pub struct Stack {
pub vars: HashMap<VarId, Value>,
pub env_vars: HashMap<String, String>,
}
impl Default for Stack {
fn default() -> Self {
Self::new()
}
}
impl Stack {
pub fn new() -> Stack {
Stack {
vars: HashMap::new(),
env_vars: HashMap::new(),
}
}
pub fn get_var(&self, var_id: VarId) -> Result<Value, ShellError> {
if let Some(v) = self.vars.get(&var_id) {
return Ok(v.clone());
}
Err(ShellError::InternalError("variable not found".into()))
}
pub fn add_var(&mut self, var_id: VarId, value: Value) {
self.vars.insert(var_id, value);
}
pub fn add_env_var(&mut self, var: String, value: String) {
self.env_vars.insert(var, value);
}
pub fn collect_captures(&self, captures: &[VarId]) -> Stack {
let mut output = Stack::new();
for capture in captures {
// Note: this assumes we have calculated captures correctly and that commands
// that take in a var decl will manually set this into scope when running the blocks
if let Ok(value) = self.get_var(*capture) {
output.vars.insert(*capture, value);
}
}
output
}
// pub fn enter_scope(&self) -> Stack {
// // FIXME: VERY EXPENSIVE to clone entire stack
// let mut output = self.clone();
// output.0.push(StackFrame {
// vars: HashMap::new(),
// env_vars: HashMap::new(),
// });
// output
// }
pub fn get_env_vars(&self) -> HashMap<String, String> {
// let mut output = HashMap::new();
// for frame in &self.0 {
// output.extend(frame.env_vars.clone().into_iter());
// }
// output
self.env_vars.clone()
}
pub fn get_env_var(&self, name: &str) -> Option<String> {
// for frame in self.0.iter().rev() {
if let Some(v) = self.env_vars.get(name) {
return Some(v.to_string());
}
// }
None
}
pub fn print_stack(&self) {
// for frame in self.0.iter().rev() {
// println!("===frame===");
println!("vars:");
for (var, val) in &self.vars {
println!(" {}: {:?}", var, val);
}
println!("env vars:");
for (var, val) in &self.env_vars {
println!(" {}: {:?}", var, val);
}
// }
}
}

2
crates/nu-protocol/src/lib.rs
View file

@ -2,6 +2,7 @@ pub mod ast;
pub mod engine;
mod example;
mod id;
mod pipeline_data;
mod shell_error;
mod signature;
mod span;
@ -12,6 +13,7 @@ pub use value::Value;
pub use example::*;
pub use id::*;
pub use pipeline_data::*;
pub use shell_error::*;
pub use signature::*;
pub use span::*;

163
crates/nu-protocol/src/pipeline_data.rs Normal file
View file

@ -0,0 +1,163 @@
use std::sync::{atomic::AtomicBool, Arc};
use crate::{ast::PathMember, ShellError, Span, Value, ValueStream};
pub enum PipelineData {
Value(Value),
Stream(ValueStream),
}
impl PipelineData {
pub fn new() -> PipelineData {
PipelineData::Value(Value::nothing())
}
pub fn into_value(self) -> Value {
match self {
PipelineData::Value(v) => v,
PipelineData::Stream(s) => Value::List {
vals: s.collect(),
span: Span::unknown(), // FIXME?
},
}
}
pub fn collect_string(self) -> String {
match self {
PipelineData::Value(v) => v.collect_string(),
PipelineData::Stream(s) => s.collect_string(),
}
}
pub fn follow_cell_path(self, cell_path: &[PathMember]) -> Result<Value, ShellError> {
match self {
// FIXME: there are probably better ways of doing this
PipelineData::Stream(stream) => Value::List {
vals: stream.collect(),
span: Span::unknown(),
}
.follow_cell_path(cell_path),
PipelineData::Value(v) => v.follow_cell_path(cell_path),
}
}
/// Simplified mapper to help with simple values also. For full iterator support use `.into_iter()` instead
pub fn map<F>(
self,
mut f: F,
ctrlc: Option<Arc<AtomicBool>>,
) -> Result<PipelineData, ShellError>
where
Self: Sized,
F: FnMut(Value) -> Value + 'static + Send,
{
match self {
PipelineData::Value(Value::List { vals, .. }) => {
Ok(vals.into_iter().map(f).into_pipeline_data(ctrlc))
}
PipelineData::Stream(stream) => Ok(stream.map(f).into_pipeline_data(ctrlc)),
PipelineData::Value(Value::Range { val, .. }) => {
Ok(val.into_range_iter()?.map(f).into_pipeline_data(ctrlc))
}
PipelineData::Value(v) => {
let output = f(v);
match output {
Value::Error { error } => Err(error),
v => Ok(v.into_pipeline_data()),
}
}
}
}
/// Simplified flatmapper. For full iterator support use `.into_iter()` instead
pub fn flat_map<U, F>(
self,
mut f: F,
ctrlc: Option<Arc<AtomicBool>>,
) -> Result<PipelineData, ShellError>
where
Self: Sized,
U: IntoIterator<Item = Value>,
<U as IntoIterator>::IntoIter: 'static + Send,
F: FnMut(Value) -> U + 'static + Send,
{
match self {
PipelineData::Value(Value::List { vals, .. }) => {
Ok(vals.into_iter().map(f).flatten().into_pipeline_data(ctrlc))
}
PipelineData::Stream(stream) => Ok(stream.map(f).flatten().into_pipeline_data(ctrlc)),
PipelineData::Value(Value::Range { val, .. }) => match val.into_range_iter() {
Ok(iter) => Ok(iter.map(f).flatten().into_pipeline_data(ctrlc)),
Err(error) => Err(error),
},
PipelineData::Value(v) => Ok(f(v).into_iter().into_pipeline_data(ctrlc)),
}
}
}
impl Default for PipelineData {
fn default() -> Self {
PipelineData::new()
}
}
pub struct PipelineIterator(PipelineData);
impl IntoIterator for PipelineData {
type Item = Value;
type IntoIter = PipelineIterator;
fn into_iter(self) -> Self::IntoIter {
match self {
PipelineData::Value(Value::List { vals, .. }) => {
PipelineIterator(PipelineData::Stream(ValueStream {
stream: Box::new(vals.into_iter()),
ctrlc: None,
}))
}
x => PipelineIterator(x),
}
}
}
impl Iterator for PipelineIterator {
type Item = Value;
fn next(&mut self) -> Option<Self::Item> {
match &mut self.0 {
PipelineData::Value(Value::Nothing { .. }) => None,
PipelineData::Value(v) => {
let prev = std::mem::take(v);
Some(prev)
}
PipelineData::Stream(stream) => stream.next(),
}
}
}
pub trait IntoPipelineData {
fn into_pipeline_data(self) -> PipelineData;
}
impl IntoPipelineData for Value {
fn into_pipeline_data(self) -> PipelineData {
PipelineData::Value(self)
}
}
pub trait IntoInterruptiblePipelineData {
fn into_pipeline_data(self, ctrlc: Option<Arc<AtomicBool>>) -> PipelineData;
}
impl<T> IntoInterruptiblePipelineData for T
where
T: Iterator<Item = Value> + Send + 'static,
{
fn into_pipeline_data(self, ctrlc: Option<Arc<AtomicBool>>) -> PipelineData {
PipelineData::Stream(ValueStream {
stream: Box::new(self),
ctrlc,
})
}
}

21
crates/nu-protocol/src/signature.rs
View file

@ -1,9 +1,10 @@
use crate::ast::Call;
use crate::engine::Command;
use crate::engine::EvaluationContext;
use crate::engine::EngineState;
use crate::engine::Stack;
use crate::BlockId;
use crate::PipelineData;
use crate::SyntaxShape;
use crate::Value;
use crate::VarId;
#[derive(Debug, Clone, PartialEq, Eq)]
@ -335,6 +336,7 @@ impl Signature {
}
}
#[derive(Clone)]
struct Predeclaration {
signature: Signature,
}
@ -354,14 +356,16 @@ impl Command for Predeclaration {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: Value,
) -> Result<crate::Value, crate::ShellError> {
_input: PipelineData,
) -> Result<PipelineData, crate::ShellError> {
panic!("Internal error: can't run a predeclaration without a body")
}
}
#[derive(Clone)]
struct BlockCommand {
signature: Signature,
block_id: BlockId,
@ -382,10 +386,11 @@ impl Command for BlockCommand {
fn run(
&self,
_context: &EvaluationContext,
_engine_state: &EngineState,
_stack: &mut Stack,
_call: &Call,
_input: Value,
) -> Result<crate::Value, crate::ShellError> {
_input: PipelineData,
) -> Result<crate::PipelineData, crate::ShellError> {
panic!("Internal error: can't run custom command with 'run', use block_id");
}

153
crates/nu-protocol/src/value/mod.rs
View file

@ -59,10 +59,6 @@ pub enum Value {
vals: Vec<Value>,
span: Span,
},
Stream {
stream: ValueStream,
span: Span,
},
List {
vals: Vec<Value>,
span: Span,
@ -110,7 +106,6 @@ impl Value {
Value::Record { span, .. } => Ok(*span),
Value::List { span, .. } => Ok(*span),
Value::Block { span, .. } => Ok(*span),
Value::Stream { span, .. } => Ok(*span),
Value::Nothing { span, .. } => Ok(*span),
Value::Binary { span, .. } => Ok(*span),
Value::CellPath { span, .. } => Ok(*span),
@ -129,7 +124,6 @@ impl Value {
Value::Range { span, .. } => *span = new_span,
Value::String { span, .. } => *span = new_span,
Value::Record { span, .. } => *span = new_span,
Value::Stream { span, .. } => *span = new_span,
Value::List { span, .. } => *span = new_span,
Value::Block { span, .. } => *span = new_span,
Value::Nothing { span, .. } => *span = new_span,
@ -158,7 +152,6 @@ impl Value {
Value::List { .. } => Type::List(Box::new(Type::Unknown)), // FIXME
Value::Nothing { .. } => Type::Nothing,
Value::Block { .. } => Type::Block,
Value::Stream { .. } => Type::ValueStream,
Value::Error { .. } => Type::Error,
Value::Binary { .. } => Type::Binary,
Value::CellPath { .. } => Type::CellPath,
@ -174,19 +167,10 @@ impl Value {
Value::Filesize { val, .. } => format_filesize(val),
Value::Duration { val, .. } => format_duration(val),
Value::Date { val, .. } => HumanTime::from(val).to_string(),
Value::Range { val, .. } => match val.into_range_iter() {
Ok(iter) => {
format!(
"range: [{}]",
iter.map(|x| x.into_string())
.collect::<Vec<String>>()
.join(", ")
)
}
Err(error) => format!("{:?}", error),
},
Value::Range { val, .. } => {
format!("{}..{}", val.from.into_string(), val.to.into_string())
}
Value::String { val, .. } => val,
Value::Stream { stream, .. } => stream.into_string(),
Value::List { vals: val, .. } => format!(
"[{}]",
val.into_iter()
@ -218,17 +202,10 @@ impl Value {
Value::Filesize { val, .. } => format!("{} bytes", val),
Value::Duration { val, .. } => format!("{} ns", val),
Value::Date { val, .. } => format!("{:?}", val),
Value::Range { val, .. } => match val.into_range_iter() {
Ok(iter) => iter
.map(|x| x.into_string())
.collect::<Vec<String>>()
.join(", "),
Err(error) => {
format!("{:?}", error)
}
},
Value::Range { val, .. } => {
format!("{}..{}", val.from.into_string(), val.to.into_string())
}
Value::String { val, .. } => val,
Value::Stream { stream, .. } => stream.collect_string(),
Value::List { vals: val, .. } => val
.into_iter()
.map(|x| x.collect_string())
@ -274,13 +251,6 @@ impl Value {
return Err(ShellError::AccessBeyondEnd(val.len(), *origin_span));
}
}
Value::Stream { stream, .. } => {
if let Some(item) = stream.nth(*count) {
current = item;
} else {
return Err(ShellError::AccessBeyondEndOfStream(*origin_span));
}
}
x => {
return Err(ShellError::IncompatiblePathAccess(
format!("{}", x.get_type()),
@ -329,27 +299,6 @@ impl Value {
span: *span,
};
}
Value::Stream { stream, span } => {
let mut output = vec![];
for val in stream {
output.push(val.clone().follow_cell_path(&[PathMember::String {
val: column_name.clone(),
span: *origin_span,
}])?);
// if let Value::Record { cols, vals, .. } = val {
// for col in cols.iter().enumerate() {
// if col.1 == column_name {
// output.push(vals[col.0].clone());
// }
// }
// }
}
current = Value::List {
vals: output,
span: *span,
};
}
x => {
return Err(ShellError::IncompatiblePathAccess(
format!("{}", x.get_type()),
@ -374,64 +323,6 @@ impl Value {
}
}
pub fn map<F>(self, span: Span, mut f: F) -> Result<Value, ShellError>
where
Self: Sized,
F: FnMut(Self) -> Value + 'static,
{
match self {
Value::List { vals, .. } => Ok(Value::Stream {
stream: vals.into_iter().map(f).into_value_stream(),
span,
}),
Value::Stream { stream, .. } => Ok(Value::Stream {
stream: stream.map(f).into_value_stream(),
span,
}),
Value::Range { val, .. } => Ok(Value::Stream {
stream: val.into_range_iter()?.map(f).into_value_stream(),
span,
}),
v => {
let output = f(v);
match output {
Value::Error { error } => Err(error),
v => Ok(v),
}
}
}
}
pub fn flat_map<U, F>(self, span: Span, mut f: F) -> Value
where
Self: Sized,
U: IntoIterator<Item = Value>,
<U as IntoIterator>::IntoIter: 'static,
F: FnMut(Self) -> U + 'static,
{
match self {
Value::List { vals, .. } => Value::Stream {
stream: vals.into_iter().map(f).flatten().into_value_stream(),
span,
},
Value::Stream { stream, .. } => Value::Stream {
stream: stream.map(f).flatten().into_value_stream(),
span,
},
Value::Range { val, .. } => match val.into_range_iter() {
Ok(iter) => Value::Stream {
stream: iter.map(f).flatten().into_value_stream(),
span,
},
Err(error) => Value::Error { error },
},
v => Value::Stream {
stream: f(v).into_iter().into_value_stream(),
span,
},
}
}
pub fn string(val: impl Into<String>, span: Span) -> Value {
Value::String {
val: val.into(),
@ -460,6 +351,12 @@ impl Value {
}
}
impl Default for Value {
fn default() -> Self {
Value::nothing()
}
}
impl PartialOrd for Value {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
// Compare two floating point numbers. The decision interval for equality is dynamically
@ -511,24 +408,6 @@ impl PartialOrd for Value {
..
},
) if lhs_headers == rhs_headers && lhs == rhs => Some(Ordering::Equal),
(Value::Stream { stream: lhs, .. }, Value::Stream { stream: rhs, .. }) => {
lhs.clone().partial_cmp(rhs.clone())
}
(Value::Stream { stream: lhs, .. }, Value::String { val: rhs, .. }) => {
lhs.clone().collect_string().partial_cmp(rhs)
}
(Value::String { val: lhs, .. }, Value::Stream { stream: rhs, .. }) => {
lhs.partial_cmp(&rhs.clone().collect_string())
}
// NOTE: This may look a bit strange, but a `Stream` is still just a `List`, it just
// happens to be in an iterator form instead of a concrete form. The contained values
// can be compared.
(Value::Stream { stream: lhs, .. }, Value::List { vals: rhs, .. }) => {
lhs.clone().collect::<Vec<Value>>().partial_cmp(rhs)
}
(Value::List { vals: lhs, .. }, Value::Stream { stream: rhs, .. }) => {
lhs.partial_cmp(&rhs.clone().collect::<Vec<Value>>())
}
(Value::Binary { val: lhs, .. }, Value::Binary { val: rhs, .. }) => {
lhs.partial_cmp(rhs)
}
@ -852,10 +731,6 @@ impl Value {
val: rhs.contains(lhs),
span,
}),
(lhs, Value::Stream { stream: rhs, .. }) => Ok(Value::Bool {
val: rhs.clone().any(|x| lhs == &x),
span,
}),
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
@ -886,10 +761,6 @@ impl Value {
val: !rhs.contains(lhs),
span,
}),
(lhs, Value::Stream { stream: rhs, .. }) => Ok(Value::Bool {
val: rhs.clone().all(|x| lhs != &x),
span,
}),
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),

132
crates/nu-protocol/src/value/stream.rs
View file

@ -1,10 +1,16 @@
use crate::*;
use std::{cell::RefCell, fmt::Debug, rc::Rc};
use std::{
fmt::Debug,
sync::{
atomic::{AtomicBool, Ordering},
Arc,
},
};
use serde::{ser::SerializeSeq, Deserialize, Serialize};
#[derive(Clone)]
pub struct ValueStream(pub Rc<RefCell<dyn Iterator<Item = Value>>>);
pub struct ValueStream {
pub stream: Box<dyn Iterator<Item = Value> + Send + 'static>,
pub ctrlc: Option<Arc<AtomicBool>>,
}
impl ValueStream {
pub fn into_string(self) -> String {
@ -22,8 +28,14 @@ impl ValueStream {
.join("\n")
}
pub fn from_stream(input: impl Iterator<Item = Value> + 'static) -> ValueStream {
ValueStream(Rc::new(RefCell::new(input)))
pub fn from_stream(
input: impl Iterator<Item = Value> + Send + 'static,
ctrlc: Option<Arc<AtomicBool>>,
) -> ValueStream {
ValueStream {
stream: Box::new(input),
ctrlc,
}
}
}
@ -37,67 +49,73 @@ impl Iterator for ValueStream {
type Item = Value;
fn next(&mut self) -> Option<Self::Item> {
{
self.0.borrow_mut().next()
if let Some(ctrlc) = &self.ctrlc {
if ctrlc.load(Ordering::SeqCst) {
None
} else {
self.stream.next()
}
} else {
self.stream.next()
}
}
}
impl Serialize for ValueStream {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
let mut seq = serializer.serialize_seq(None)?;
// impl Serialize for ValueStream {
// fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
// where
// S: serde::Serializer,
// {
// let mut seq = serializer.serialize_seq(None)?;
for element in self.0.borrow_mut().into_iter() {
seq.serialize_element(&element)?;
}
seq.end()
}
}
// for element in self.0.borrow_mut().into_iter() {
// seq.serialize_element(&element)?;
// }
// seq.end()
// }
// }
impl<'de> Deserialize<'de> for ValueStream {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: serde::Deserializer<'de>,
{
deserializer.deserialize_seq(MySeqVisitor)
}
}
// impl<'de> Deserialize<'de> for ValueStream {
// fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
// where
// D: serde::Deserializer<'de>,
// {
// deserializer.deserialize_seq(MySeqVisitor)
// }
// }
struct MySeqVisitor;
// struct MySeqVisitor;
impl<'a> serde::de::Visitor<'a> for MySeqVisitor {
type Value = ValueStream;
// impl<'a> serde::de::Visitor<'a> for MySeqVisitor {
// type Value = ValueStream;
fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
formatter.write_str("a value stream")
}
// fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
// formatter.write_str("a value stream")
// }
fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
where
A: serde::de::SeqAccess<'a>,
{
let mut output: Vec<Value> = vec![];
// fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
// where
// A: serde::de::SeqAccess<'a>,
// {
// let mut output: Vec<Value> = vec![];
while let Some(value) = seq.next_element()? {
output.push(value);
}
// while let Some(value) = seq.next_element()? {
// output.push(value);
// }
Ok(ValueStream(Rc::new(RefCell::new(output.into_iter()))))
}
}
// Ok(ValueStream(Rc::new(RefCell::new(output.into_iter()))))
// }
// }
pub trait IntoValueStream {
fn into_value_stream(self) -> ValueStream;
}
// pub trait IntoValueStream {
// fn into_value_stream(self) -> ValueStream;
// }
impl<T> IntoValueStream for T
where
T: Iterator<Item = Value> + 'static,
{
fn into_value_stream(self) -> ValueStream {
ValueStream::from_stream(self)
}
}
// impl<T> IntoValueStream for T
// where
// T: Iterator<Item = Value> + 'static,
// {
// fn into_value_stream(self) -> ValueStream {
// ValueStream::from_stream(self)
// }
// }

194
src/main.rs
View file

@ -1,4 +1,10 @@
use std::{cell::RefCell, io::Write, rc::Rc};
use std::{
io::Write,
sync::{
atomic::{AtomicBool, Ordering},
Arc,
},
};
use dialoguer::{
console::{Style, Term},
@ -12,8 +18,8 @@ use nu_engine::eval_block;
use nu_parser::parse;
use nu_protocol::{
ast::Call,
engine::{EngineState, EvaluationContext, Stack, StateWorkingSet},
ShellError, Value,
engine::{EngineState, Stack, StateWorkingSet},
IntoPipelineData, PipelineData, ShellError, Value,
};
use reedline::{Completer, CompletionActionHandler, DefaultPrompt, LineBuffer, Prompt};
@ -82,14 +88,27 @@ fn main() -> Result<()> {
miette_hook(x);
}));
let engine_state = create_default_context();
let mut engine_state = create_default_context();
// TODO: make this conditional in the future
// Ctrl-c protection section
let ctrlc = Arc::new(AtomicBool::new(false));
let handler_ctrlc = ctrlc.clone();
let engine_state_ctrlc = ctrlc.clone();
ctrlc::set_handler(move || {
handler_ctrlc.store(true, Ordering::SeqCst);
})
.expect("Error setting Ctrl-C handler");
engine_state.ctrlc = Some(engine_state_ctrlc);
// End ctrl-c protection section
if let Some(path) = std::env::args().nth(1) {
let file = std::fs::read(&path).into_diagnostic()?;
let (block, delta) = {
let engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(&engine_state);
let (output, err) = parse(&mut working_set, Some(&path), &file, false);
if let Some(err) = err {
report_error(&working_set, &err);
@ -99,20 +118,16 @@ fn main() -> Result<()> {
(output, working_set.render())
};
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
EngineState::merge_delta(&mut engine_state, delta);
let state = EvaluationContext {
engine_state: engine_state.clone(),
stack: nu_protocol::engine::Stack::new(),
};
let mut stack = nu_protocol::engine::Stack::new();
match eval_block(&state, &block, Value::nothing()) {
Ok(value) => {
println!("{}", value.into_string());
match eval_block(&engine_state, &mut stack, &block, PipelineData::new()) {
Ok(pipeline_data) => {
println!("{}", pipeline_data.collect_string());
}
Err(err) => {
let engine_state = engine_state.borrow();
let working_set = StateWorkingSet::new(&*engine_state);
let working_set = StateWorkingSet::new(&engine_state);
report_error(&working_set, &err);
@ -127,28 +142,9 @@ fn main() -> Result<()> {
let completer = NuCompleter::new(engine_state.clone());
let mut entry_num = 0;
let mut line_editor = Reedline::create()
.into_diagnostic()?
.with_history(Box::new(
FileBackedHistory::with_file(1000, "history.txt".into()).into_diagnostic()?,
))
.into_diagnostic()?
.with_highlighter(Box::new(NuHighlighter {
engine_state: engine_state.clone(),
}))
.with_completion_action_handler(Box::new(FuzzyCompletion {
completer: Box::new(completer),
}))
// .with_completion_action_handler(Box::new(
// ListCompletionHandler::default().with_completer(Box::new(completer)),
// ))
.with_validator(Box::new(NuValidator {
engine_state: engine_state.clone(),
}));
let default_prompt = DefaultPrompt::new(1);
let mut nu_prompt = NushellPrompt::new();
let stack = nu_protocol::engine::Stack::new();
let mut stack = nu_protocol::engine::Stack::new();
// Load config startup file
if let Some(mut config_path) = nu_path::config_dir() {
@ -162,15 +158,53 @@ fn main() -> Result<()> {
let config_filename = config_path.to_string_lossy().to_owned();
if let Ok(contents) = std::fs::read_to_string(&config_path) {
eval_source(engine_state.clone(), &stack, &contents, &config_filename);
eval_source(&mut engine_state, &mut stack, &contents, &config_filename);
}
}
}
let history_path = if let Some(mut history_path) = nu_path::config_dir() {
history_path.push("nushell");
history_path.push("history.txt");
Some(history_path)
} else {
None
};
loop {
//Reset the ctrl-c handler
ctrlc.store(false, Ordering::SeqCst);
let line_editor = Reedline::create()
.into_diagnostic()?
.with_completion_action_handler(Box::new(FuzzyCompletion {
completer: Box::new(completer.clone()),
}))
.with_highlighter(Box::new(NuHighlighter {
engine_state: engine_state.clone(),
}))
// .with_completion_action_handler(Box::new(
// ListCompletionHandler::default().with_completer(Box::new(completer)),
// ))
.with_validator(Box::new(NuValidator {
engine_state: engine_state.clone(),
}));
let mut line_editor = if let Some(history_path) = history_path.clone() {
line_editor
.with_history(Box::new(
FileBackedHistory::with_file(1000, history_path.clone())
.into_diagnostic()?,
))
.into_diagnostic()?
} else {
line_editor
};
let prompt = update_prompt(
PROMPT_COMMAND,
engine_state.clone(),
&engine_state,
&stack,
&mut nu_prompt,
&default_prompt,
@ -184,25 +218,25 @@ fn main() -> Result<()> {
if s.trim() == "exit" {
break;
} else if s.trim() == "vars" {
engine_state.borrow().print_vars();
engine_state.print_vars();
continue;
} else if s.trim() == "decls" {
engine_state.borrow().print_decls();
engine_state.print_decls();
continue;
} else if s.trim() == "blocks" {
engine_state.borrow().print_blocks();
engine_state.print_blocks();
continue;
} else if s.trim() == "stack" {
stack.print_stack();
continue;
} else if s.trim() == "contents" {
engine_state.borrow().print_contents();
engine_state.print_contents();
continue;
}
eval_source(
engine_state.clone(),
&stack,
&mut engine_state,
&mut stack,
&s,
&format!("entry #{}", entry_num),
);
@ -229,16 +263,19 @@ fn main() -> Result<()> {
}
}
fn print_value(value: Value, state: &EvaluationContext) -> Result<(), ShellError> {
fn print_value(value: Value, engine_state: &EngineState) -> Result<(), ShellError> {
// If the table function is in the declarations, then we can use it
// to create the table value that will be printed in the terminal
let engine_state = state.engine_state.borrow();
let output = match engine_state.find_decl("table".as_bytes()) {
Some(decl_id) => {
let table = engine_state
.get_decl(decl_id)
.run(state, &Call::new(), value)?;
table.into_string()
let mut stack = Stack::new();
let table = engine_state.get_decl(decl_id).run(
engine_state,
&mut stack,
&Call::new(),
value.into_pipeline_data(),
)?;
table.collect_string()
}
None => value.into_string(),
};
@ -254,7 +291,7 @@ fn print_value(value: Value, state: &EvaluationContext) -> Result<(), ShellError
fn update_prompt<'prompt>(
env_variable: &str,
engine_state: Rc<RefCell<EngineState>>,
engine_state: &EngineState,
stack: &Stack,
nu_prompt: &'prompt mut NushellPrompt,
default_prompt: &'prompt DefaultPrompt,
@ -270,37 +307,22 @@ fn update_prompt<'prompt>(
return nu_prompt as &dyn Prompt;
}
let (block, delta) = {
let ref_engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&ref_engine_state);
let block = {
let mut working_set = StateWorkingSet::new(engine_state);
let (output, err) = parse(&mut working_set, None, prompt_command.as_bytes(), false);
if let Some(err) = err {
report_error(&working_set, &err);
return default_prompt as &dyn Prompt;
}
(output, working_set.render())
output
};
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
let mut stack = stack.clone();
let state = nu_protocol::engine::EvaluationContext {
engine_state: engine_state.clone(),
stack: stack.clone(),
};
let evaluated_prompt = match eval_block(&state, &block, Value::nothing()) {
Ok(value) => match value.as_string() {
Ok(prompt) => prompt,
Err(err) => {
let engine_state = engine_state.borrow();
let working_set = StateWorkingSet::new(&*engine_state);
report_error(&working_set, &err);
return default_prompt as &dyn Prompt;
}
},
let evaluated_prompt = match eval_block(engine_state, &mut stack, &block, PipelineData::new()) {
Ok(pipeline_data) => pipeline_data.collect_string(),
Err(err) => {
let engine_state = engine_state.borrow();
let working_set = StateWorkingSet::new(&*engine_state);
let working_set = StateWorkingSet::new(engine_state);
report_error(&working_set, &err);
return default_prompt as &dyn Prompt;
}
@ -312,14 +334,13 @@ fn update_prompt<'prompt>(
}
fn eval_source(
engine_state: Rc<RefCell<EngineState>>,
stack: &Stack,
engine_state: &mut EngineState,
stack: &mut Stack,
source: &str,
fname: &str,
) -> bool {
let (block, delta) = {
let engine_state = engine_state.borrow();
let mut working_set = StateWorkingSet::new(&*engine_state);
let mut working_set = StateWorkingSet::new(engine_state);
let (output, err) = parse(
&mut working_set,
Some(fname), // format!("entry #{}", entry_num)
@ -333,26 +354,19 @@ fn eval_source(
(output, working_set.render())
};
EngineState::merge_delta(&mut *engine_state.borrow_mut(), delta);
EngineState::merge_delta(engine_state, delta);
let state = nu_protocol::engine::EvaluationContext {
engine_state: engine_state.clone(),
stack: stack.clone(),
};
match eval_block(&state, &block, Value::nothing()) {
Ok(value) => {
if let Err(err) = print_value(value, &state) {
let engine_state = engine_state.borrow();
let working_set = StateWorkingSet::new(&*engine_state);
match eval_block(engine_state, stack, &block, PipelineData::new()) {
Ok(pipeline_data) => {
if let Err(err) = print_value(pipeline_data.into_value(), engine_state) {
let working_set = StateWorkingSet::new(engine_state);
report_error(&working_set, &err);
return false;
}
}
Err(err) => {
let engine_state = engine_state.borrow();
let working_set = StateWorkingSet::new(&*engine_state);
let working_set = StateWorkingSet::new(engine_state);
report_error(&working_set, &err);
return false;

42
src/tests.rs
View file

@ -249,32 +249,32 @@ fn alias_2() -> TestResult {
#[test]
fn block_param1() -> TestResult {
run_test("[3] | each { $it + 10 }", "[13]")
run_test("[3] | each { $it + 10 } | get 0", "13")
}
#[test]
fn block_param2() -> TestResult {
run_test("[3] | each { |y| $y + 10 }", "[13]")
run_test("[3] | each { |y| $y + 10 } | get 0", "13")
}
#[test]
fn block_param3_list_iteration() -> TestResult {
run_test("[1,2,3] | each { $it + 10 }", "[11, 12, 13]")
run_test("[1,2,3] | each { $it + 10 } | get 1", "12")
}
#[test]
fn block_param4_list_iteration() -> TestResult {
run_test("[1,2,3] | each { |y| $y + 10 }", "[11, 12, 13]")
run_test("[1,2,3] | each { |y| $y + 10 } | get 2", "13")
}
#[test]
fn range_iteration1() -> TestResult {
run_test("1..4 | each { |y| $y + 10 }", "[11, 12, 13, 14]")
run_test("1..4 | each { |y| $y + 10 } | get 0", "11")
}
#[test]
fn range_iteration2() -> TestResult {
run_test("4..1 | each { |y| $y + 100 }", "[104, 103, 102, 101]")
run_test("4..1 | each { |y| $y + 100 } | get 3", "101")
}
#[test]
@ -311,22 +311,22 @@ fn build_string3() -> TestResult {
#[test]
fn build_string4() -> TestResult {
run_test(
"['sam','rick','pete'] | each { build-string $it ' is studying'}",
"[sam is studying, rick is studying, pete is studying]",
"['sam','rick','pete'] | each { build-string $it ' is studying'} | get 2",
"pete is studying",
)
}
#[test]
fn build_string5() -> TestResult {
run_test(
"['sam','rick','pete'] | each { |x| build-string $x ' is studying'}",
"[sam is studying, rick is studying, pete is studying]",
"['sam','rick','pete'] | each { |x| build-string $x ' is studying'} | get 1",
"rick is studying",
)
}
#[test]
fn cell_path_subexpr1() -> TestResult {
run_test("([[lang, gems]; [nu, 100]]).lang", "[nu]")
run_test("([[lang, gems]; [nu, 100]]).lang | get 0", "nu")
}
#[test]
@ -336,7 +336,7 @@ fn cell_path_subexpr2() -> TestResult {
#[test]
fn cell_path_var1() -> TestResult {
run_test("let x = [[lang, gems]; [nu, 100]]; $x.lang", "[nu]")
run_test("let x = [[lang, gems]; [nu, 100]]; $x.lang | get 0", "nu")
}
#[test]
@ -352,21 +352,21 @@ fn custom_rest_var() -> TestResult {
#[test]
fn row_iteration() -> TestResult {
run_test(
"[[name, size]; [tj, 100], [rl, 200]] | each { $it.size * 8 }",
"[800, 1600]",
"[[name, size]; [tj, 100], [rl, 200]] | each { $it.size * 8 } | get 1",
"1600",
)
}
#[test]
fn record_iteration() -> TestResult {
run_test("([[name, level]; [aa, 100], [bb, 200]] | each { $it | each { |x| if $x.column == \"level\" { $x.value + 100 } else { $x.value } } }).level", "[200, 300]")
run_test("([[name, level]; [aa, 100], [bb, 200]] | each { $it | each { |x| if $x.column == \"level\" { $x.value + 100 } else { $x.value } } }).level | get 1", "300")
}
#[test]
fn row_condition1() -> TestResult {
run_test(
"([[name, size]; [a, 1], [b, 2], [c, 3]] | where size < 3).name",
"[a, b]",
"([[name, size]; [a, 1], [b, 2], [c, 3]] | where size < 3).name | get 1",
"b",
)
}
@ -621,6 +621,14 @@ fn for_loops() -> TestResult {
run_test(r#"(for x in [1, 2, 3] { $x + 10 }).1"#, "12")
}
#[test]
fn par_each() -> TestResult {
run_test(
r#"1..10 | par-each --numbered { ([[index, item]; [$it.index, ($it.item > 5)]]).0 } | where index == 4 | get item.0"#,
"false",
)
}
#[test]
fn type_in_list_of_this_type() -> TestResult {
run_test(r#"42 in [41 42 43]"#, "true")