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IO and redirection overhaul (#11934)

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# Description
The PR overhauls how IO redirection is handled, allowing more explicit
and fine-grain control over `stdout` and `stderr` output as well as more
efficient IO and piping.

To summarize the changes in this PR:
- Added a new `IoStream` type to indicate the intended destination for a
pipeline element's `stdout` and `stderr`.
- The `stdout` and `stderr` `IoStream`s are stored in the `Stack` and to
avoid adding 6 additional arguments to every eval function and
`Command::run`. The `stdout` and `stderr` streams can be temporarily
overwritten through functions on `Stack` and these functions will return
a guard that restores the original `stdout` and `stderr` when dropped.
- In the AST, redirections are now directly part of a `PipelineElement`
as a `Option<Redirection>` field instead of having multiple different
`PipelineElement` enum variants for each kind of redirection. This
required changes to the parser, mainly in `lite_parser.rs`.
- `Command`s can also set a `IoStream` override/redirection which will
apply to the previous command in the pipeline. This is used, for
example, in `ignore` to allow the previous external command to have its
stdout redirected to `Stdio::null()` at spawn time. In contrast, the
current implementation has to create an os pipe and manually consume the
output on nushell's side. File and pipe redirections (`o>`, `e>`, `e>|`,
etc.) have precedence over overrides from commands.

This PR improves piping and IO speed, partially addressing #10763. Using
the `throughput` command from that issue, this PR gives the following
speedup on my setup for the commands below:
| Command | Before (MB/s) | After (MB/s) | Bash (MB/s) |
| --------------------------- | -------------:| ------------:|
-----------:|
| `throughput o> /dev/null` | 1169 | 52938 | 54305 |
| `throughput \| ignore` | 840 | 55438 | N/A |
| `throughput \| null` | Error | 53617 | N/A |
| `throughput \| rg 'x'` | 1165 | 3049 | 3736 |
| `(throughput) \| rg 'x'` | 810 | 3085 | 3815 |

(Numbers above are the median samples for throughput)

This PR also paves the way to refactor our `ExternalStream` handling in
the various commands. For example, this PR already fixes the following
code:
```nushell
^sh -c 'echo -n "hello "; sleep 0; echo "world"' | find "hello world"
```
This returns an empty list on 0.90.1 and returns a highlighted "hello
world" on this PR.

Since the `stdout` and `stderr` `IoStream`s are available to commands
when they are run, then this unlocks the potential for more convenient
behavior. E.g., the `find` command can disable its ansi highlighting if
it detects that the output `IoStream` is not the terminal. Knowing the
output streams will also allow background job output to be redirected
more easily and efficiently.

# User-Facing Changes
- External commands returned from closures will be collected (in most
cases):
  ```nushell
  1..2 | each {|_| nu -c "print a" }
  ```
This gives `["a", "a"]` on this PR, whereas this used to print "a\na\n"
and then return an empty list.

  ```nushell
  1..2 | each {|_| nu -c "print -e a" }
  ```
This gives `["", ""]` and prints "a\na\n" to stderr, whereas this used
to return an empty list and print "a\na\n" to stderr.

- Trailing new lines are always trimmed for external commands when
piping into internal commands or collecting it as a value. (Failure to
decode the output as utf-8 will keep the trailing newline for the last
binary value.) In the current nushell version, the following three code
snippets differ only in parenthesis placement, but they all also have
different outputs:

  1. `1..2 | each { ^echo a }`
     ```
     a
     a
     ╭────────────╮
     │ empty list │
     ╰────────────╯
     ```
  2. `1..2 | each { (^echo a) }`
     ```
     ╭───┬───╮
     │ 0 │ a │
     │ 1 │ a │
     ╰───┴───╯
     ```
  3. `1..2 | (each { ^echo a })`
     ```
     ╭───┬───╮
     │ 0 │ a │
     │   │   │
     │ 1 │ a │
     │   │   │
     ╰───┴───╯
     ```

  But in this PR, the above snippets will all have the same output:
  ```
  ╭───┬───╮
  │ 0 │ a │
  │ 1 │ a │
  ╰───┴───╯
  ```

- All existing flags on `run-external` are now deprecated.

- File redirections now apply to all commands inside a code block:
  ```nushell
  (nu -c "print -e a"; nu -c "print -e b") e> test.out
  ```
This gives "a\nb\n" in `test.out` and prints nothing. The same result
would happen when printing to stdout and using a `o>` file redirection.

- External command output will (almost) never be ignored, and ignoring
output must be explicit now:
  ```nushell
  (^echo a; ^echo b)
  ```
This prints "a\nb\n", whereas this used to print only "b\n". This only
applies to external commands; values and internal commands not in return
position will not print anything (e.g., `(echo a; echo b)` still only
prints "b").

- `complete` now always captures stderr (`do` is not necessary).

# After Submitting
The language guide and other documentation will need to be updated.
This commit is contained in:
Ian Manske
2024-03-14 20:51:55 +00:00
committed by GitHub
parent e2907e7e3a
commit b6c7656194
113 changed files with 3272 additions and 4022 deletions
Download Patch File Download Diff File Expand all files Collapse all files

690
crates/nu-parser/tests/test_parser.rs
View File

@ -1,10 +1,8 @@
use nu_parser::*;
use nu_protocol::ast::{Argument, Call, PathMember};
use nu_protocol::Span;
use nu_protocol::{
ast::{Expr, Expression, PipelineElement},
ast::{Argument, Call, Expr, PathMember},
engine::{Command, EngineState, Stack, StateWorkingSet},
ParseError, PipelineData, ShellError, Signature, SyntaxShape,
ParseError, PipelineData, ShellError, Signature, Span, SyntaxShape,
};
use rstest::rstest;
@ -73,21 +71,15 @@ fn test_int(
} else {
assert!(err.is_none(), "{test_tag}: unexpected error {err:#?}");
assert_eq!(block.len(), 1, "{test_tag}: result block length > 1");
let expressions = &block.pipelines[0];
let pipeline = &block.pipelines[0];
assert_eq!(
expressions.len(),
pipeline.len(),
1,
"{test_tag}: got multiple result expressions, expected 1"
);
if let PipelineElement::Expression(
_,
Expression {
expr: observed_val, ..
},
) = &expressions.elements[0]
{
compare_rhs_binary_op(test_tag, &expected_val, observed_val);
}
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
compare_rhs_binary_op(test_tag, &expected_val, &element.expr.expr);
}
}
@ -112,7 +104,7 @@ fn compare_rhs_binary_op(
"{test_tag}: Expected: {expected:#?}, observed: {observed:#?}"
)
}
Expr::ExternalCall(e, _, _) => {
Expr::ExternalCall(e, _) => {
let observed_expr = &e.expr;
assert_eq!(
expected, observed_expr,
@ -259,6 +251,7 @@ pub fn multi_test_parse_number() {
test_int(test.0, test.1, test.2, test.3);
}
}
#[ignore]
#[test]
fn test_parse_any() {
@ -277,6 +270,7 @@ fn test_parse_any() {
}
}
}
#[test]
pub fn parse_int() {
let engine_state = EngineState::new();
@ -286,18 +280,11 @@ pub fn parse_int() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
assert!(matches!(
expressions.elements[0],
PipelineElement::Expression(
_,
Expression {
expr: Expr::Int(3),
..
}
)
))
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Int(3));
}
#[test]
@ -309,18 +296,11 @@ pub fn parse_int_with_underscores() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
assert!(matches!(
expressions.elements[0],
PipelineElement::Expression(
_,
Expression {
expr: Expr::Int(420692023),
..
}
)
))
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Int(420692023));
}
#[test]
@ -339,41 +319,32 @@ pub fn parse_cell_path() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
// hoo boy this pattern matching is a pain
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
if let Expr::FullCellPath(b) = &expr.expr {
assert!(matches!(
b.head,
Expression {
expr: Expr::Var(_),
..
}
));
if let [a, b] = &b.tail[..] {
if let PathMember::String { val, optional, .. } = a {
assert_eq!(val, "bar");
assert_eq!(optional, &false);
} else {
panic!("wrong type")
}
if let PathMember::String { val, optional, .. } = b {
assert_eq!(val, "baz");
assert_eq!(optional, &false);
} else {
panic!("wrong type")
}
if let Expr::FullCellPath(b) = &element.expr.expr {
assert!(matches!(b.head.expr, Expr::Var(_)));
if let [a, b] = &b.tail[..] {
if let PathMember::String { val, optional, .. } = a {
assert_eq!(val, "bar");
assert_eq!(optional, &false);
} else {
panic!("cell path tail is unexpected")
panic!("wrong type")
}
if let PathMember::String { val, optional, .. } = b {
assert_eq!(val, "baz");
assert_eq!(optional, &false);
} else {
panic!("wrong type")
}
} else {
panic!("Not a cell path");
panic!("cell path tail is unexpected")
}
} else {
panic!("Not an expression")
panic!("Not a cell path");
}
}
@ -394,41 +365,32 @@ pub fn parse_cell_path_optional() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
// hoo boy this pattern matching is a pain
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
if let Expr::FullCellPath(b) = &expr.expr {
assert!(matches!(
b.head,
Expression {
expr: Expr::Var(_),
..
}
));
if let [a, b] = &b.tail[..] {
if let PathMember::String { val, optional, .. } = a {
assert_eq!(val, "bar");
assert_eq!(optional, &true);
} else {
panic!("wrong type")
}
if let PathMember::String { val, optional, .. } = b {
assert_eq!(val, "baz");
assert_eq!(optional, &false);
} else {
panic!("wrong type")
}
if let Expr::FullCellPath(b) = &element.expr.expr {
assert!(matches!(b.head.expr, Expr::Var(_)));
if let [a, b] = &b.tail[..] {
if let PathMember::String { val, optional, .. } = a {
assert_eq!(val, "bar");
assert_eq!(optional, &true);
} else {
panic!("cell path tail is unexpected")
panic!("wrong type")
}
if let PathMember::String { val, optional, .. } = b {
assert_eq!(val, "baz");
assert_eq!(optional, &false);
} else {
panic!("wrong type")
}
} else {
panic!("Not a cell path");
panic!("cell path tail is unexpected")
}
} else {
panic!("Not an expression")
panic!("Not a cell path");
}
}
@ -441,13 +403,11 @@ pub fn parse_binary_with_hex_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0x13]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0x13]));
}
#[test]
@ -459,13 +419,11 @@ pub fn parse_binary_with_incomplete_hex_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0x03]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0x03]));
}
#[test]
@ -477,13 +435,11 @@ pub fn parse_binary_with_binary_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0b10101000]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0b10101000]));
}
#[test]
@ -495,13 +451,11 @@ pub fn parse_binary_with_incomplete_binary_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0b00000010]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0b00000010]));
}
#[test]
@ -513,13 +467,11 @@ pub fn parse_binary_with_octal_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0o250]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0o250]));
}
#[test]
@ -531,13 +483,11 @@ pub fn parse_binary_with_incomplete_octal_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::Binary(vec![0o2]))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::Binary(vec![0o2]));
}
#[test]
@ -549,13 +499,11 @@ pub fn parse_binary_with_invalid_octal_format() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert!(!matches!(&expr.expr, Expr::Binary(_)))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert!(!matches!(element.expr.expr, Expr::Binary(_)));
}
#[test]
@ -569,13 +517,11 @@ pub fn parse_binary_with_multi_byte_char() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert!(!matches!(&expr.expr, Expr::Binary(_)))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert!(!matches!(element.expr.expr, Expr::Binary(_)))
}
#[test]
@ -591,17 +537,12 @@ pub fn parse_call() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) = &expressions.elements[0]
{
if let Expr::Call(call) = &element.expr.expr {
assert_eq!(call.decl_id, 0);
}
}
@ -650,17 +591,12 @@ pub fn parse_call_short_flag_batch_arg_allowed() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) = &expressions.elements[0]
{
if let Expr::Call(call) = &element.expr.expr {
assert_eq!(call.decl_id, 0);
assert_eq!(call.arguments.len(), 2);
matches!(call.arguments[0], Argument::Named((_, None, None)));
@ -767,42 +703,28 @@ fn test_nothing_comparison_eq() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
assert!(matches!(
&expressions.elements[0],
PipelineElement::Expression(
_,
Expression {
expr: Expr::BinaryOp(..),
..
}
)
))
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert!(matches!(&element.expr.expr, Expr::BinaryOp(..)));
}
#[rstest]
#[case(b"let a = 1 err> /dev/null", "RedirectionInLetMut")]
#[case(b"let a = 1 out> /dev/null", "RedirectionInLetMut")]
#[case(b"mut a = 1 err> /dev/null", "RedirectionInLetMut")]
#[case(b"mut a = 1 out> /dev/null", "RedirectionInLetMut")]
// This two cases cause AssignInPipeline instead of RedirectionInLetMut
#[case(b"let a = 1 out+err> /dev/null", "AssignInPipeline")]
#[case(b"mut a = 1 out+err> /dev/null", "AssignInPipeline")]
fn test_redirection_with_letmut(#[case] phase: &[u8], #[case] expected: &str) {
#[case(b"let a = 1 err> /dev/null")]
#[case(b"let a = 1 out> /dev/null")]
#[case(b"mut a = 1 err> /dev/null")]
#[case(b"mut a = 1 out> /dev/null")]
#[case(b"let a = 1 out+err> /dev/null")]
#[case(b"mut a = 1 out+err> /dev/null")]
fn test_redirection_with_letmut(#[case] phase: &[u8]) {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let _block = parse(&mut working_set, None, phase, true);
match expected {
"RedirectionInLetMut" => assert!(matches!(
working_set.parse_errors.first(),
Some(ParseError::RedirectionInLetMut(_, _))
)),
"AssignInPipeline" => assert!(matches!(
working_set.parse_errors.first(),
Some(ParseError::AssignInPipeline(_, _, _, _))
)),
_ => panic!("unexpected pattern"),
}
assert!(matches!(
working_set.parse_errors.first(),
Some(ParseError::RedirectingBuiltinCommand(_, _, _))
));
}
#[test]
@ -814,18 +736,11 @@ fn test_nothing_comparison_neq() {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
assert!(matches!(
&expressions.elements[0],
PipelineElement::Expression(
_,
Expression {
expr: Expr::BinaryOp(..),
..
}
)
))
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert!(matches!(&element.expr.expr, Expr::BinaryOp(..)));
}
mod string {
@ -840,13 +755,11 @@ mod string {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::String("hello nushell".to_string()))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::String("hello nushell".to_string()))
}
mod interpolation {
@ -864,26 +777,23 @@ mod string {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
let subexprs: Vec<&Expr> = match expr {
Expression {
expr: Expr::StringInterpolation(expressions),
..
} => expressions.iter().map(|e| &e.expr).collect(),
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
let subexprs: Vec<&Expr> = match &element.expr.expr {
Expr::StringInterpolation(expressions) => {
expressions.iter().map(|e| &e.expr).collect()
}
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
assert_eq!(subexprs.len(), 2);
assert_eq!(subexprs.len(), 2);
assert_eq!(subexprs[0], &Expr::String("hello ".to_string()));
assert_eq!(subexprs[0], &Expr::String("hello ".to_string()));
assert!(matches!(subexprs[1], &Expr::FullCellPath(..)));
} else {
panic!("Not an expression")
}
assert!(matches!(subexprs[1], &Expr::FullCellPath(..)));
}
#[test]
@ -896,25 +806,21 @@ mod string {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(expressions.len(), 1);
let subexprs: Vec<&Expr> = match &element.expr.expr {
Expr::StringInterpolation(expressions) => {
expressions.iter().map(|e| &e.expr).collect()
}
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
let subexprs: Vec<&Expr> = match expr {
Expression {
expr: Expr::StringInterpolation(expressions),
..
} => expressions.iter().map(|e| &e.expr).collect(),
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
assert_eq!(subexprs.len(), 1);
assert_eq!(subexprs.len(), 1);
assert_eq!(subexprs[0], &Expr::String("hello (39 + 3)".to_string()));
} else {
panic!("Not an expression")
}
assert_eq!(subexprs[0], &Expr::String("hello (39 + 3)".to_string()));
}
#[test]
@ -927,27 +833,23 @@ mod string {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(expressions.len(), 1);
let subexprs: Vec<&Expr> = match &element.expr.expr {
Expr::StringInterpolation(expressions) => {
expressions.iter().map(|e| &e.expr).collect()
}
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
let subexprs: Vec<&Expr> = match expr {
Expression {
expr: Expr::StringInterpolation(expressions),
..
} => expressions.iter().map(|e| &e.expr).collect(),
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
assert_eq!(subexprs.len(), 2);
assert_eq!(subexprs.len(), 2);
assert_eq!(subexprs[0], &Expr::String("hello \\".to_string()));
assert_eq!(subexprs[0], &Expr::String("hello \\".to_string()));
assert!(matches!(subexprs[1], &Expr::FullCellPath(..)));
} else {
panic!("Not an expression")
}
assert!(matches!(subexprs[1], &Expr::FullCellPath(..)));
}
#[test]
@ -960,24 +862,20 @@ mod string {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(expressions.len(), 1);
let subexprs: Vec<&Expr> = match &element.expr.expr {
Expr::StringInterpolation(expressions) => {
expressions.iter().map(|e| &e.expr).collect()
}
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
let subexprs: Vec<&Expr> = match expr {
Expression {
expr: Expr::StringInterpolation(expressions),
..
} => expressions.iter().map(|e| &e.expr).collect(),
_ => panic!("Expected an `Expr::StringInterpolation`"),
};
assert_eq!(subexprs.len(), 1);
assert_eq!(subexprs[0], &Expr::String("(1 + 3)(7 - 5)".to_string()));
} else {
panic!("Not an expression")
}
assert_eq!(subexprs.len(), 1);
assert_eq!(subexprs[0], &Expr::String("(1 + 3)(7 - 5)".to_string()));
}
#[test]
@ -1084,24 +982,19 @@ mod range {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1, "{tag}: block length");
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1, "{tag}: expression length");
if let PipelineElement::Expression(
_,
Expression {
expr:
Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
),
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1, "{tag}: expression length");
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
) = expressions.elements[0]
) = element.expr.expr
{
assert_eq!(
the_inclusion, inclusion,
@ -1143,24 +1036,19 @@ mod range {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 2, "{tag} block len 2");
let expressions = &block.pipelines[1];
assert_eq!(expressions.len(), 1, "{tag}: expression length 1");
if let PipelineElement::Expression(
_,
Expression {
expr:
Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
),
let pipeline = &block.pipelines[1];
assert_eq!(pipeline.len(), 1, "{tag}: expression length 1");
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let Expr::Range(
Some(_),
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
) = expressions.elements[0]
) = element.expr.expr
{
assert_eq!(
the_inclusion, inclusion,
@ -1189,24 +1077,19 @@ mod range {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1, "{tag}: block len 1");
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1, "{tag}: expression length 1");
if let PipelineElement::Expression(
_,
Expression {
expr:
Expr::Range(
Some(_),
None,
None,
RangeOperator {
inclusion: the_inclusion,
..
},
),
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1, "{tag}: expression length");
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let Expr::Range(
Some(_),
None,
None,
RangeOperator {
inclusion: the_inclusion,
..
},
) = expressions.elements[0]
) = element.expr.expr
{
assert_eq!(
the_inclusion, inclusion,
@ -1235,24 +1118,19 @@ mod range {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1, "{tag}: block len 1");
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1, "{tag}: expression length 1");
if let PipelineElement::Expression(
_,
Expression {
expr:
Expr::Range(
None,
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
),
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1, "{tag}: expression length");
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let Expr::Range(
None,
None,
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
) = expressions.elements[0]
) = element.expr.expr
{
assert_eq!(
the_inclusion, inclusion,
@ -1281,24 +1159,19 @@ mod range {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1, "{tag}: block length 1");
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1, "{tag}: expression length 1");
if let PipelineElement::Expression(
_,
Expression {
expr:
Expr::Range(
Some(_),
Some(_),
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
),
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1, "{tag}: expression length");
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
if let Expr::Range(
Some(_),
Some(_),
Some(_),
RangeOperator {
inclusion: the_inclusion,
..
},
) = expressions.elements[0]
) = element.expr.expr
{
assert_eq!(
the_inclusion, inclusion,
@ -1671,31 +1544,21 @@ mod input_types {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 2);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 2);
assert!(pipeline.elements[0].redirection.is_none());
assert!(pipeline.elements[1].redirection.is_none());
match &expressions.elements[0] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
match &pipeline.elements[0].expr.expr {
Expr::Call(call) => {
let expected_id = working_set.find_decl(b"ls").unwrap();
assert_eq!(call.decl_id, expected_id)
}
_ => panic!("Expected expression Call not found"),
}
match &expressions.elements[1] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
match &pipeline.elements[1].expr.expr {
Expr::Call(call) => {
let expected_id = working_set.find_decl(b"group-by").unwrap();
assert_eq!(call.decl_id, expected_id)
}
@ -1718,15 +1581,10 @@ mod input_types {
engine_state.merge_delta(delta).unwrap();
let expressions = &block.pipelines[0];
match &expressions.elements[3] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
let pipeline = &block.pipelines[0];
assert!(pipeline.elements[3].redirection.is_none());
match &pipeline.elements[3].expr.expr {
Expr::Call(call) => {
let arg = &call.arguments[0];
match arg {
Argument::Positional(a) => match &a.expr {
@ -1734,17 +1592,12 @@ mod input_types {
Expr::Subexpression(id) => {
let block = engine_state.get_block(*id);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 2);
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 2);
assert!(pipeline.elements[1].redirection.is_none());
match &expressions.elements[1] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
match &pipeline.elements[1].expr.expr {
Expr::Call(call) => {
let working_set = StateWorkingSet::new(&engine_state);
let expected_id = working_set.find_decl(b"min").unwrap();
assert_eq!(call.decl_id, expected_id)
@ -1776,29 +1629,20 @@ mod input_types {
assert!(working_set.parse_errors.is_empty());
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
match &expressions.elements[2] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
let pipeline = &block.pipelines[0];
assert!(pipeline.elements[2].redirection.is_none());
assert!(pipeline.elements[3].redirection.is_none());
match &pipeline.elements[2].expr.expr {
Expr::Call(call) => {
let expected_id = working_set.find_decl(b"with-column").unwrap();
assert_eq!(call.decl_id, expected_id)
}
_ => panic!("Expected expression Call not found"),
}
match &expressions.elements[3] {
PipelineElement::Expression(
_,
Expression {
expr: Expr::Call(call),
..
},
) => {
match &pipeline.elements[3].expr.expr {
Expr::Call(call) => {
let expected_id = working_set.find_decl(b"collect").unwrap();
assert_eq!(call.decl_id, expected_id)
}

18
crates/nu-parser/tests/test_parser_unicode_escapes.rs
View File

@ -1,13 +1,9 @@
#![cfg(test)]
//use nu_parser::ParseError;
use nu_parser::*;
use nu_protocol::{
//ast::{Expr, Expression, PipelineElement},
ast::{Expr, PipelineElement},
//engine::{Command, EngineState, Stack, StateWorkingSet},
ast::Expr,
engine::{EngineState, StateWorkingSet},
//Signature, SyntaxShape,
};
pub fn do_test(test: &[u8], expected: &str, error_contains: Option<&str>) {
@ -19,13 +15,11 @@ pub fn do_test(test: &[u8], expected: &str, error_contains: Option<&str>) {
match working_set.parse_errors.first() {
None => {
assert_eq!(block.len(), 1);
let expressions = &block.pipelines[0];
assert_eq!(expressions.len(), 1);
if let PipelineElement::Expression(_, expr) = &expressions.elements[0] {
assert_eq!(expr.expr, Expr::String(expected.to_string()))
} else {
panic!("Not an expression")
}
let pipeline = &block.pipelines[0];
assert_eq!(pipeline.len(), 1);
let element = &pipeline.elements[0];
assert!(element.redirection.is_none());
assert_eq!(element.expr.expr, Expr::String(expected.to_string()));
}
Some(pev) => match error_contains {
None => {