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Track call arguments in a single list (#5125)

Browse Source 
* Initial implementation of ordered call args

* Run cargo fmt

* Fix some clippy lints

* Add positional len and nth

* Cargo fmt

* Remove more old nth calls

* Good ole rustfmt

* Add named len

Co-authored-by: Hristo Filaretov <h.filaretov@protonmail.com>
This commit is contained in:
Hristo Filaretov 2022-04-09 04:55:02 +02:00 committed by GitHub
parent 3bac480ca0
commit 683b912263
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GPG Key ID: 4AEE18F83AFDEB23
25 changed files with 263 additions and 190 deletions
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13
crates/nu-cli/src/completions/custom_completions.rs
View File

@ -1,7 +1,7 @@
use crate::completions::{Completer, CompletionOptions, SortBy};
use nu_engine::eval_call;
use nu_protocol::{
ast::{Call, Expr, Expression},
ast::{Argument, Call, Expr, Expression},
engine::{EngineState, Stack, StateWorkingSet},
PipelineData, Span, Type, Value, CONFIG_VARIABLE_ID,
};
@ -92,21 +92,20 @@ impl Completer for CustomCompletion {
&Call {
decl_id: self.decl_id,
head: span,
positional: vec![
Expression {
arguments: vec![
Argument::Positional(Expression {
span: Span { start: 0, end: 0 },
ty: Type::String,
expr: Expr::String(self.line.clone()),
custom_completion: None,
},
Expression {
}),
Argument::Positional(Expression {
span: Span { start: 0, end: 0 },
ty: Type::Int,
expr: Expr::Int(line_pos as i64),
custom_completion: None,
},
}),
],
named: vec![],
redirect_stdout: true,
redirect_stderr: true,
},

8
crates/nu-command/src/core_commands/for_.rs
View File

@ -61,11 +61,15 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let head = call.head;
let var_id = call.positional[0]
let var_id = call
.positional_nth(0)
.expect("checked through parser")
.as_var()
.expect("internal error: missing variable");
let keyword_expr = call.positional[1]
let keyword_expr = call
.positional_nth(1)
.expect("checked through parser")
.as_keyword()
.expect("internal error: missing keyword");
let values = eval_expression(engine_state, stack, keyword_expr)?;

8
crates/nu-command/src/core_commands/hide.rs
View File

@ -44,7 +44,7 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
let import_pattern = if let Some(Expression {
expr: Expr::ImportPattern(pat),
..
}) = call.positional.get(0)
}) = call.positional_nth(0)
{
pat
} else {
@ -115,7 +115,11 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
};
if stack.remove_env_var(engine_state, &name).is_none() {
return Err(ShellError::NotFound(call.positional[0].span));
return Err(ShellError::NotFound(
call.positional_nth(0)
.expect("already checked for present positional")
.span,
));
}
}
} else if !import_pattern.hidden.contains(&import_pattern.head.name)

4
crates/nu-command/src/core_commands/if_.rs
View File

@ -50,9 +50,9 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let cond = &call.positional[0];
let cond = call.positional_nth(0).expect("checked through parser");
let then_block: CaptureBlock = call.req(engine_state, stack, 1)?;
let else_case = call.positional.get(2);
let else_case = call.positional_nth(2);
let result = eval_expression(engine_state, stack, cond)?;
match &result {

8
crates/nu-command/src/core_commands/let_.rs
View File

@ -42,11 +42,15 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let var_id = call.positional[0]
let var_id = call
.positional_nth(0)
.expect("checked through parser")
.as_var()
.expect("internal error: missing variable");
let keyword_expr = call.positional[1]
let keyword_expr = call
.positional_nth(1)
.expect("checked through parser")
.as_keyword()
.expect("internal error: missing keyword");

2
crates/nu-command/src/core_commands/metadata.rs
View File

@ -35,7 +35,7 @@ impl Command for Metadata {
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let arg = call.positional.get(0);
let arg = call.positional_nth(0);
let head = call.head;
match arg {

2
crates/nu-command/src/core_commands/use_.rs
View File

@ -42,7 +42,7 @@ https://www.nushell.sh/book/thinking_in_nushell.html#parsing-and-evaluation-are-
let import_pattern = if let Some(Expression {
expr: Expr::ImportPattern(pat),
..
}) = call.positional.get(0)
}) = call.positional_nth(0)
{
pat
} else {

4
crates/nu-command/src/env/let_env.rs vendored
View File

@ -35,7 +35,9 @@ impl Command for LetEnv {
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let env_var = call.req(engine_state, stack, 0)?;
let keyword_expr = call.positional[1]
let keyword_expr = call
.positional_nth(1)
.expect("checked through parser")
.as_keyword()
.expect("internal error: missing keyword");

8
crates/nu-command/src/env/with_env.rs vendored
View File

@ -99,7 +99,9 @@ fn with_env(
return Err(ShellError::CantConvert(
"string list or single row".into(),
x.get_type().to_string(),
call.positional[1].span,
call.positional_nth(1)
.expect("already checked through .req")
.span,
));
}
}
@ -123,7 +125,9 @@ fn with_env(
return Err(ShellError::CantConvert(
"string list or single row".into(),
x.get_type().to_string(),
call.positional[1].span,
call.positional_nth(1)
.expect("already checked through .req")
.span,
));
}
};

2
crates/nu-command/src/filesystem/cd.rs
View File

@ -28,7 +28,7 @@ impl Command for Cd {
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let raw_path = call.nth(0);
let raw_path = call.positional_nth(0);
let path_val: Option<Value> = call.opt(engine_state, stack, 0)?;
let cwd = current_dir(engine_state, stack)?;

9
crates/nu-command/src/filesystem/mkdir.rs
View File

@ -57,13 +57,18 @@ impl Command for Mkdir {
}
for (i, dir) in directories.enumerate() {
let span = call.positional[i].span;
let span = call
.positional_nth(i)
.expect("already checked through directories")
.span;
let dir_res = std::fs::create_dir_all(&dir);
if let Err(reason) = dir_res {
return Err(ShellError::CreateNotPossible(
format!("failed to create directory: {}", reason),
call.positional[i].span,
call.positional_nth(i)
.expect("already checked through directories")
.span,
));
}

16
crates/nu-command/src/filesystem/touch.rs
View File

@ -239,7 +239,9 @@ impl Command for Touch {
if let Err(err) = OpenOptions::new().write(true).create(true).open(&item) {
return Err(ShellError::CreateNotPossible(
format!("Failed to create file: {}", err),
call.positional[index].span,
call.positional_nth(index)
.expect("already checked positional")
.span,
));
};
@ -251,7 +253,9 @@ impl Command for Touch {
) {
return Err(ShellError::ChangeModifiedTimeNotPossible(
format!("Failed to change the modified time: {}", err),
call.positional[index].span,
call.positional_nth(index)
.expect("already checked positional")
.span,
));
};
}
@ -268,7 +272,9 @@ impl Command for Touch {
) {
return Err(ShellError::ChangeAccessTimeNotPossible(
format!("Failed to change the access time: {}", err),
call.positional[index].span,
call.positional_nth(index)
.expect("already checked positional")
.span,
));
};
} else {
@ -279,7 +285,9 @@ impl Command for Touch {
) {
return Err(ShellError::ChangeAccessTimeNotPossible(
format!("Failed to change the access time: {}", err),
call.positional[index].span,
call.positional_nth(index)
.expect("already checked positional")
.span,
));
};
}

4
crates/nu-command/src/platform/ansi/ansi_.rs
View File

@ -380,7 +380,9 @@ Format: #
None => {
return Err(ShellError::UnsupportedInput(
String::from("Unknown ansi code"),
call.nth(0).expect("Unexpected missing argument").span,
call.positional_nth(0)
.expect("Unexpected missing argument")
.span,
))
}
}

5
crates/nu-command/src/platform/reedline_commands/keybindings_list.rs
View File

@ -57,15 +57,14 @@ impl Command for KeybindingsList {
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let records = if call.named.is_empty() {
let records = if call.named_len() == 0 {
let all_options = vec!["modifiers", "keycodes", "edits", "modes", "events"];
all_options
.iter()
.flat_map(|argument| get_records(argument, &call.head))
.collect()
} else {
call.named
.iter()
call.named_iter()
.flat_map(|(argument, _)| get_records(argument.item.as_str(), &call.head))
.collect()
};

3
crates/nu-command/src/strings/build_string.rs
View File

@ -54,8 +54,7 @@ impl Command for BuildString {
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let config = stack.get_config().unwrap_or_default();
let output = call
.positional
.iter()
.positional_iter()
.map(|expr| {
eval_expression(engine_state, stack, expr).map(|val| val.into_string(", ", &config))
})

9
crates/nu-command/src/strings/char_.rs
View File

@ -245,7 +245,10 @@ impl Command for Char {
}
let mut multi_byte = String::new();
for (i, arg) in args.iter().enumerate() {
let span = call.nth(i).expect("Unexpected missing argument").span;
let span = call
.positional_nth(i)
.expect("Unexpected missing argument")
.span;
multi_byte.push(string_to_unicode_char(arg, &span)?)
}
Ok(Value::string(multi_byte, call_span).into_pipeline_data())
@ -262,7 +265,9 @@ impl Command for Char {
} else {
Err(ShellError::UnsupportedInput(
"error finding named character".into(),
call.nth(0).expect("Unexpected missing argument").span,
call.positional_nth(0)
.expect("Unexpected missing argument")
.span,
))
}
}

12
crates/nu-engine/src/call_ext.rs
View File

@ -59,7 +59,7 @@ impl CallExt for Call {
) -> Result<Vec<T>, ShellError> {
let mut output = vec![];
for expr in self.positional.iter().skip(starting_pos) {
for expr in self.positional_iter().skip(starting_pos) {
let result = eval_expression(engine_state, stack, expr)?;
output.push(FromValue::from_value(&result)?);
}
@ -73,8 +73,8 @@ impl CallExt for Call {
stack: &mut Stack,
pos: usize,
) -> Result<Option<T>, ShellError> {
if let Some(expr) = self.nth(pos) {
let result = eval_expression(engine_state, stack, &expr)?;
if let Some(expr) = self.positional_nth(pos) {
let result = eval_expression(engine_state, stack, expr)?;
FromValue::from_value(&result).map(Some)
} else {
Ok(None)
@ -87,12 +87,12 @@ impl CallExt for Call {
stack: &mut Stack,
pos: usize,
) -> Result<T, ShellError> {
if let Some(expr) = self.nth(pos) {
let result = eval_expression(engine_state, stack, &expr)?;
if let Some(expr) = self.positional_nth(pos) {
let result = eval_expression(engine_state, stack, expr)?;
FromValue::from_value(&result)
} else {
Err(ShellError::AccessBeyondEnd(
self.positional.len(),
self.positional_len(),
self.head,
))
}

16
crates/nu-engine/src/eval.rs
View File

@ -32,7 +32,7 @@ pub fn eval_call(
) -> Result<PipelineData, ShellError> {
let decl = engine_state.get_decl(call.decl_id);
if !decl.is_known_external() && call.named.iter().any(|(flag, _)| flag.item == "help") {
if !decl.is_known_external() && call.named_iter().any(|(flag, _)| flag.item == "help") {
let mut signature = decl.signature();
signature.usage = decl.usage().to_string();
signature.extra_usage = decl.extra_usage().to_string();
@ -59,7 +59,7 @@ pub fn eval_call(
.var_id
.expect("internal error: all custom parameters must have var_ids");
if let Some(arg) = call.positional.get(param_idx) {
if let Some(arg) = call.positional_nth(param_idx) {
let result = eval_expression(engine_state, caller_stack, arg)?;
callee_stack.add_var(var_id, result);
} else if let Some(arg) = &param.default_value {
@ -73,7 +73,7 @@ pub fn eval_call(
if let Some(rest_positional) = decl.signature().rest_positional {
let mut rest_items = vec![];
for arg in call.positional.iter().skip(
for arg in call.positional_iter().skip(
decl.signature().required_positional.len()
+ decl.signature().optional_positional.len(),
) {
@ -101,7 +101,7 @@ pub fn eval_call(
for named in decl.signature().named {
if let Some(var_id) = named.var_id {
let mut found = false;
for call_named in &call.named {
for call_named in call.named_iter() {
if call_named.0.item == named.long {
if let Some(arg) = &call_named.1 {
let result = eval_expression(engine_state, caller_stack, arg)?;
@ -198,14 +198,14 @@ fn eval_external(
let mut call = Call::new(head.span);
call.positional.push(head.clone());
call.add_positional(head.clone());
for arg in args {
call.positional.push(arg.clone())
call.add_positional(arg.clone())
}
if redirect_stdout {
call.named.push((
call.add_named((
Spanned {
item: "redirect-stdout".into(),
span: head.span,
@ -215,7 +215,7 @@ fn eval_external(
}
if redirect_stderr {
call.named.push((
call.add_named((
Spanned {
item: "redirect-stderr".into(),
span: head.span,

4
crates/nu-parser/src/flatten.rs
View File

@ -145,10 +145,10 @@ pub fn flatten_expression(
let mut output = vec![(call.head, FlatShape::InternalCall)];
let mut args = vec![];
for positional in &call.positional {
for positional in call.positional_iter() {
args.extend(flatten_expression(working_set, positional));
}
for named in &call.named {
for named in call.named_iter() {
args.push((named.0.span, FlatShape::Flag));
if let Some(expr) = &named.1 {
args.extend(flatten_expression(working_set, expr));

108
crates/nu-parser/src/known_external.rs
View File

@ -1,7 +1,10 @@
use nu_protocol::ast::Expr;
use nu_protocol::engine::{EngineState, Stack, StateWorkingSet};
use nu_protocol::{ast::Call, engine::Command, ShellError, Signature};
use nu_protocol::{PipelineData, Spanned};
use nu_protocol::{
ast::{Argument, Call, Expr, Expression},
engine::Command,
ShellError, Signature,
};
use nu_protocol::{PipelineData, Spanned, Type};
#[derive(Clone)]
pub struct KnownExternal {
@ -34,69 +37,56 @@ impl Command for KnownExternal {
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
// FIXME: This is a bit of a hack, and it'd be nice for the parser/AST to be able to handle the original
// order of the parameters. Until then, we need to recover the original order.
// FIXME: This is going to be a bit expensive, but we need to do it to ensure any new block/subexpression
// we find when parsing the external call is handled properly.
let mut engine_state = engine_state.clone();
let call_span = call.span();
let contents = engine_state.get_span_contents(&call_span);
let head_span = call.head;
let decl_id = engine_state
.find_decl("run-external".as_bytes())
.ok_or(ShellError::ExternalNotSupported(head_span))?;
let redirect_stdout = call.redirect_stdout;
let redirect_stderr = call.redirect_stderr;
let command = engine_state.get_decl(decl_id);
let (lexed, _) = crate::lex(contents, call_span.start, &[], &[], true);
let mut extern_call = Call::new(head_span);
let spans: Vec<_> = lexed.into_iter().map(|x| x.span).collect();
let mut working_set = StateWorkingSet::new(&engine_state);
let (external_call, _) = crate::parse_external_call(&mut working_set, &spans, &[]);
let delta = working_set.render();
engine_state.merge_delta(delta, None, ".")?;
let working_state = StateWorkingSet::new(engine_state);
let extern_name = working_state.get_span_contents(call.head);
let extern_name = String::from_utf8(extern_name.to_vec())
.expect("this was already parsed as a command name");
let arg_extern_name = Expression {
expr: Expr::String(extern_name),
span: call.head,
ty: Type::String,
custom_completion: None,
};
match external_call.expr {
Expr::ExternalCall(head, args) => {
let decl_id = engine_state
.find_decl("run-external".as_bytes())
.ok_or(ShellError::ExternalNotSupported(head.span))?;
extern_call.add_positional(arg_extern_name);
let command = engine_state.get_decl(decl_id);
let mut call = Call::new(head.span);
call.positional.push(*head);
for arg in args {
call.positional.push(arg.clone())
}
if redirect_stdout {
call.named.push((
Spanned {
item: "redirect-stdout".into(),
span: call_span,
},
None,
))
}
if redirect_stderr {
call.named.push((
Spanned {
item: "redirect-stderr".into(),
span: call_span,
},
None,
))
}
command.run(&engine_state, stack, &call, input)
}
x => {
println!("{:?}", x);
panic!("internal error: known external not actually external")
for arg in &call.arguments {
match arg {
Argument::Positional(positional) => extern_call.add_positional(positional.clone()),
Argument::Named(named) => extern_call.add_named(named.clone()),
}
}
if call.redirect_stdout {
extern_call.add_named((
Spanned {
item: "redirect-stdout".into(),
span: call_span,
},
None,
))
}
if call.redirect_stderr {
extern_call.add_named((
Spanned {
item: "redirect-stderr".into(),
span: call_span,
},
None,
))
}
command.run(engine_state, stack, &extern_call, input)
}
}

58
crates/nu-parser/src/parse_keywords.rs
View File

@ -1,8 +1,8 @@
use nu_path::canonicalize_with;
use nu_protocol::{
ast::{
Block, Call, Expr, Expression, ImportPattern, ImportPatternHead, ImportPatternMember,
Pipeline,
Argument, Block, Call, Expr, Expression, ImportPattern, ImportPatternHead,
ImportPatternMember, Pipeline,
},
engine::StateWorkingSet,
span, Exportable, Overlay, PositionalArg, Span, SyntaxShape, Type, CONFIG_VARIABLE_ID,
@ -142,7 +142,7 @@ pub fn parse_for(
let sig = decl.signature();
// Let's get our block and make sure it has the right signature
if let Some(arg) = call.positional.get(2) {
if let Some(arg) = call.positional_nth(2) {
match arg {
Expression {
expr: Expr::Block(block_id),
@ -178,8 +178,8 @@ pub fn parse_for(
};
// All positional arguments must be in the call positional vector by this point
let var_decl = call.positional.get(0).expect("for call already checked");
let block = call.positional.get(2).expect("for call already checked");
let var_decl = call.positional_nth(0).expect("for call already checked");
let block = call.positional_nth(2).expect("for call already checked");
let error = None;
if let (Some(var_id), Some(block_id)) = (&var_decl.as_var(), block.as_block()) {
@ -311,7 +311,7 @@ pub fn parse_def(
let sig = decl.signature();
// Let's get our block and make sure it has the right signature
if let Some(arg) = call.positional.get(2) {
if let Some(arg) = call.positional_nth(2) {
match arg {
Expression {
expr: Expr::Block(block_id),
@ -347,9 +347,9 @@ pub fn parse_def(
};
// All positional arguments must be in the call positional vector by this point
let name_expr = call.positional.get(0).expect("def call already checked");
let sig = call.positional.get(1).expect("def call already checked");
let block = call.positional.get(2).expect("def call already checked");
let name_expr = call.positional_nth(0).expect("def call already checked");
let sig = call.positional_nth(1).expect("def call already checked");
let block = call.positional_nth(2).expect("def call already checked");
let mut error = None;
@ -457,8 +457,8 @@ pub fn parse_extern(
(call, call_span)
}
};
let name_expr = call.positional.get(0);
let sig = call.positional.get(1);
let name_expr = call.positional_nth(0);
let sig = call.positional_nth(1);
if let (Some(name_expr), Some(sig)) = (name_expr, sig) {
if let (Some(name), Some(mut signature)) = (&name_expr.as_string(), sig.as_signature()) {
@ -626,8 +626,7 @@ pub fn parse_export(
let mut call = Box::new(Call {
head: spans[0],
decl_id: export_decl_id,
positional: vec![],
named: vec![],
arguments: vec![],
redirect_stdout: true,
redirect_stderr: false,
});
@ -895,7 +894,7 @@ pub fn parse_export(
if let Some(name_span) = spans.get(2) {
let (name_expr, err) = parse_string(working_set, *name_span);
error = error.or(err);
call.positional.push(name_expr);
call.add_positional(name_expr);
if let Some(block_span) = spans.get(3) {
let (block_expr, err) = parse_block_expression(
@ -922,7 +921,7 @@ pub fn parse_export(
None
};
call.positional.push(block_expr);
call.add_positional(block_expr);
exportable
} else {
@ -1184,8 +1183,10 @@ pub fn parse_module(
let call = Box::new(Call {
head: spans[0],
decl_id: module_decl_id,
positional: vec![module_name_expr, block_expr],
named: vec![],
arguments: vec![
Argument::Positional(module_name_expr),
Argument::Positional(block_expr),
],
redirect_stdout: true,
redirect_stderr: false,
});
@ -1264,7 +1265,7 @@ pub fn parse_use(
}
};
let import_pattern = if let Some(expr) = call.nth(0) {
let import_pattern = if let Some(expr) = call.positional_nth(0) {
if let Some(pattern) = expr.as_import_pattern() {
pattern
} else {
@ -1422,8 +1423,7 @@ pub fn parse_use(
let call = Box::new(Call {
head: spans[0],
decl_id: use_decl_id,
positional: vec![import_pattern_expr],
named: vec![],
arguments: vec![Argument::Positional(import_pattern_expr)],
redirect_stdout: true,
redirect_stderr: false,
});
@ -1493,7 +1493,7 @@ pub fn parse_hide(
}
};
let import_pattern = if let Some(expr) = call.nth(0) {
let import_pattern = if let Some(expr) = call.positional_nth(0) {
if let Some(pattern) = expr.as_import_pattern() {
pattern
} else {
@ -1630,8 +1630,7 @@ pub fn parse_hide(
let call = Box::new(Call {
head: spans[0],
decl_id: hide_decl_id,
positional: vec![import_pattern_expr],
named: vec![],
arguments: vec![Argument::Positional(import_pattern_expr)],
redirect_stdout: true,
redirect_stderr: false,
});
@ -1715,8 +1714,10 @@ pub fn parse_let(
let call = Box::new(Call {
decl_id,
head: spans[0],
positional: vec![lvalue, rvalue],
named: vec![],
arguments: vec![
Argument::Positional(lvalue),
Argument::Positional(rvalue),
],
redirect_stdout: true,
redirect_stderr: false,
});
@ -1834,7 +1835,7 @@ pub fn parse_source(
// Adding this expression to the positional creates a syntax highlighting error
// after writing `source example.nu`
call_with_block.positional.push(Expression {
call_with_block.add_positional(Expression {
expr: Expr::Int(block_id as i64),
span: spans[1],
ty: Type::Any,
@ -1947,8 +1948,7 @@ pub fn parse_register(
// The ? operator is not used because the error has to be kept to be printed in the shell
// For that reason the values are kept in a result that will be passed at the end of this call
let arguments = call
.positional
.get(0)
.positional_nth(0)
.map(|expr| {
let name_expr = working_set.get_span_contents(expr.span);
@ -1992,7 +1992,7 @@ pub fn parse_register(
// Signature is an optional value from the call and will be used to decide if
// the plugin is called to get the signatures or to use the given signature
let signature = call.positional.get(1).map(|expr| {
let signature = call.positional_nth(1).map(|expr| {
let signature = working_set.get_span_contents(expr.span);
serde_json::from_slice::<Signature>(signature).map_err(|_| {
ParseError::LabeledError(

55
crates/nu-parser/src/parser.rs
View File

@ -8,8 +8,9 @@ use crate::{
use nu_protocol::{
ast::{
Block, Call, CellPath, Expr, Expression, FullCellPath, ImportPattern, ImportPatternHead,
ImportPatternMember, Operator, PathMember, Pipeline, RangeInclusion, RangeOperator,
Argument, Block, Call, CellPath, Expr, Expression, FullCellPath, ImportPattern,
ImportPatternHead, ImportPatternMember, Operator, PathMember, Pipeline, RangeInclusion,
RangeOperator,
},
engine::StateWorkingSet,
span, BlockId, Flag, PositionalArg, Signature, Span, Spanned, SyntaxShape, Type, Unit, VarId,
@ -127,16 +128,16 @@ pub fn trim_quotes(bytes: &[u8]) -> &[u8] {
pub fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseError> {
// Allow the call to pass if they pass in the help flag
if call.named.iter().any(|(n, _)| n.item == "help") {
if call.named_iter().any(|(n, _)| n.item == "help") {
return None;
}
if call.positional.len() < sig.required_positional.len() {
if call.positional_len() < sig.required_positional.len() {
// Comparing the types of all signature positional arguments against the parsed
// expressions found in the call. If one type is not found then it could be assumed
// that that positional argument is missing from the parsed call
for argument in &sig.required_positional {
let found = call.positional.iter().fold(false, |ac, expr| {
let found = call.positional_iter().fold(false, |ac, expr| {
if argument.shape.to_type() == expr.ty || argument.shape == SyntaxShape::Any {
true
} else {
@ -144,7 +145,7 @@ pub fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseEr
}
});
if !found {
if let Some(last) = call.positional.last() {
if let Some(last) = call.positional_iter().last() {
return Some(ParseError::MissingPositional(
argument.name.clone(),
Span {
@ -166,8 +167,8 @@ pub fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseEr
}
}
let missing = &sig.required_positional[call.positional.len()];
if let Some(last) = call.positional.last() {
let missing = &sig.required_positional[call.positional_len()];
if let Some(last) = call.positional_iter().last() {
Some(ParseError::MissingPositional(
missing.name.clone(),
Span {
@ -188,7 +189,7 @@ pub fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseEr
}
} else {
for req_flag in sig.named.iter().filter(|x| x.required) {
if call.named.iter().all(|(n, _)| n.item != req_flag.long) {
if call.named_iter().all(|(n, _)| n.item != req_flag.long) {
return Some(ParseError::MissingRequiredFlag(
req_flag.long.clone(),
command,
@ -743,7 +744,7 @@ pub fn parse_internal_call(
if let Some(long_name) = long_name {
// We found a long flag, like --bar
error = error.or(err);
call.named.push((long_name, arg));
call.add_named((long_name, arg));
spans_idx += 1;
continue;
}
@ -766,7 +767,7 @@ pub fn parse_internal_call(
parse_value(working_set, *arg, &arg_shape, expand_aliases_denylist);
error = error.or(err);
call.named.push((
call.add_named((
Spanned {
item: flag.long.clone(),
span: spans[spans_idx],
@ -783,7 +784,7 @@ pub fn parse_internal_call(
})
}
} else {
call.named.push((
call.add_named((
Spanned {
item: flag.long.clone(),
span: spans[spans_idx],
@ -844,10 +845,10 @@ pub fn parse_internal_call(
} else {
arg
};
call.positional.push(arg);
call.add_positional(arg);
positional_idx += 1;
} else {
call.positional.push(Expression::garbage(arg_span));
call.add_positional(Expression::garbage(arg_span));
error = error.or_else(|| {
Some(ParseError::ExtraPositional(
signature.call_signature(),
@ -4384,26 +4385,25 @@ pub fn parse_expression(
env_vars.push(sh.1);
}
let positional = vec![
Expression {
let arguments = vec![
Argument::Positional(Expression {
expr: Expr::List(env_vars),
span: span(&spans[..pos]),
ty: Type::Any,
custom_completion: None,
},
Expression {
}),
Argument::Positional(Expression {
expr: Expr::Block(block_id),
span: span(&spans[pos..]),
ty,
custom_completion: None,
},
}),
];
let expr = Expr::Call(Box::new(Call {
head: Span { start: 0, end: 0 },
decl_id,
named: vec![],
positional,
arguments,
redirect_stdout: true,
redirect_stderr: false,
}));
@ -4657,7 +4657,7 @@ pub fn parse_block(
if let Some(Expression {
expr: Expr::Keyword(_, _, expr),
..
}) = call.positional.get_mut(1)
}) = call.positional_iter_mut().nth(1)
{
if expr.has_in_variable(working_set) {
*expr = Box::new(wrap_expr_with_collect(
@ -4810,14 +4810,14 @@ pub fn discover_captures_in_expr(
}
}
for named in &call.named {
for named in call.named_iter() {
if let Some(arg) = &named.1 {
let result = discover_captures_in_expr(working_set, arg, seen, seen_blocks);
output.extend(&result);
}
}
for positional in &call.positional {
for positional in call.positional_iter() {
let result = discover_captures_in_expr(working_set, positional, seen, seen_blocks);
output.extend(&result);
}
@ -4985,12 +4985,12 @@ fn wrap_expr_with_collect(working_set: &mut StateWorkingSet, expr: &Expression)
let block_id = working_set.add_block(block);
output.push(Expression {
output.push(Argument::Positional(Expression {
expr: Expr::Block(block_id),
span,
ty: Type::Any,
custom_completion: None,
});
}));
// The containing, synthetic call to `collect`.
// We don't want to have a real span as it will confuse flattening
@ -4998,8 +4998,7 @@ fn wrap_expr_with_collect(working_set: &mut StateWorkingSet, expr: &Expression)
Expression {
expr: Expr::Call(Box::new(Call {
head: Span::new(0, 0),
named: vec![],
positional: output,
arguments: output,
decl_id,
redirect_stdout: true,
redirect_stderr: false,

7
crates/nu-plugin/src/protocol/evaluated_call.rs
View File

@ -24,13 +24,12 @@ impl EvaluatedCall {
stack: &mut Stack,
) -> Result<Self, ShellError> {
let positional = call
.positional
.iter()
.positional_iter()
.map(|expr| eval_expression(engine_state, stack, expr))
.collect::<Result<Vec<Value>, ShellError>>()?;
let mut named = Vec::with_capacity(call.named.len());
for (string, expr) in call.named.iter() {
let mut named = Vec::with_capacity(call.named_len());
for (string, expr) in call.named_iter() {
let value = match expr {
None => None,
Some(expr) => Some(eval_expression(engine_state, stack, expr)?),

76
crates/nu-protocol/src/ast/call.rs
View File

@ -3,13 +3,18 @@ use serde::{Deserialize, Serialize};
use super::Expression;
use crate::{DeclId, Span, Spanned};
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub enum Argument {
Positional(Expression),
Named((Spanned<String>, Option<Expression>)),
}
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Call {
/// identifier of the declaration to call
pub decl_id: DeclId,
pub head: Span,
pub positional: Vec<Expression>,
pub named: Vec<(Spanned<String>, Option<Expression>)>,
pub arguments: Vec<Argument>,
pub redirect_stdout: bool,
pub redirect_stderr: bool,
}
@ -19,15 +24,64 @@ impl Call {
Self {
decl_id: 0,
head,
positional: vec![],
named: vec![],
arguments: vec![],
redirect_stdout: true,
redirect_stderr: false,
}
}
pub fn named_iter(&self) -> impl Iterator<Item = &(Spanned<String>, Option<Expression>)> {
self.arguments.iter().filter_map(|arg| match arg {
Argument::Named(named) => Some(named),
Argument::Positional(_) => None,
})
}
pub fn named_iter_mut(
&mut self,
) -> impl Iterator<Item = &mut (Spanned<String>, Option<Expression>)> {
self.arguments.iter_mut().filter_map(|arg| match arg {
Argument::Named(named) => Some(named),
Argument::Positional(_) => None,
})
}
pub fn named_len(&self) -> usize {
self.named_iter().count()
}
pub fn add_named(&mut self, named: (Spanned<String>, Option<Expression>)) {
self.arguments.push(Argument::Named(named));
}
pub fn add_positional(&mut self, positional: Expression) {
self.arguments.push(Argument::Positional(positional));
}
pub fn positional_iter(&self) -> impl Iterator<Item = &Expression> {
self.arguments.iter().filter_map(|arg| match arg {
Argument::Named(_) => None,
Argument::Positional(positional) => Some(positional),
})
}
pub fn positional_iter_mut(&mut self) -> impl Iterator<Item = &mut Expression> {
self.arguments.iter_mut().filter_map(|arg| match arg {
Argument::Named(_) => None,
Argument::Positional(positional) => Some(positional),
})
}
pub fn positional_nth(&self, i: usize) -> Option<&Expression> {
self.positional_iter().nth(i)
}
pub fn positional_len(&self) -> usize {
self.positional_iter().count()
}
pub fn has_flag(&self, flag_name: &str) -> bool {
for name in &self.named {
for name in self.named_iter() {
if flag_name == name.0.item {
return true;
}
@ -37,7 +91,7 @@ impl Call {
}
pub fn get_flag_expr(&self, flag_name: &str) -> Option<Expression> {
for name in &self.named {
for name in self.named_iter() {
if flag_name == name.0.item {
return name.1.clone();
}
@ -47,7 +101,7 @@ impl Call {
}
pub fn get_named_arg(&self, flag_name: &str) -> Option<Spanned<String>> {
for name in &self.named {
for name in self.named_iter() {
if flag_name == name.0.item {
return Some(name.0.clone());
}
@ -56,20 +110,16 @@ impl Call {
None
}
pub fn nth(&self, pos: usize) -> Option<Expression> {
self.positional.get(pos).cloned()
}
pub fn span(&self) -> Span {
let mut span = self.head;
for positional in &self.positional {
for positional in self.positional_iter() {
if positional.span.end > span.end {
span.end = positional.span.end;
}
}
for (named, val) in &self.named {
for (named, val) in self.named_iter() {
if named.span.end > span.end {
span.end = named.span.end;
}

12
crates/nu-protocol/src/ast/expression.rs
View File

@ -133,12 +133,12 @@ impl Expression {
Expr::Binary(_) => false,
Expr::Bool(_) => false,
Expr::Call(call) => {
for positional in &call.positional {
for positional in call.positional_iter() {
if positional.has_in_variable(working_set) {
return true;
}
}
for named in &call.named {
for named in call.named_iter() {
if let Some(expr) = &named.1 {
if expr.has_in_variable(working_set) {
return true;
@ -302,10 +302,10 @@ impl Expression {
Expr::Binary(_) => {}
Expr::Bool(_) => {}
Expr::Call(call) => {
for positional in &mut call.positional {
for positional in call.positional_iter_mut() {
positional.replace_in_variable(working_set, new_var_id);
}
for named in &mut call.named {
for named in call.named_iter_mut() {
if let Some(expr) = &mut named.1 {
expr.replace_in_variable(working_set, new_var_id)
}
@ -449,10 +449,10 @@ impl Expression {
if replaced.contains_span(call.head) {
call.head = new_span;
}
for positional in &mut call.positional {
for positional in call.positional_iter_mut() {
positional.replace_span(working_set, replaced, new_span);
}
for named in &mut call.named {
for named in call.named_iter_mut() {
if let Some(expr) = &mut named.1 {
expr.replace_span(working_set, replaced, new_span)
}