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move scope variable into nu variable (#4725)

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JT 2022-03-04 11:36:11 -05:00 committed by GitHub
parent eef3de2d05
commit e64ca97fe2
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8 changed files with 349 additions and 355 deletions
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2
crates/nu-cli/src/completions.rs
View file

@ -86,7 +86,7 @@ impl NuCompleter {
) -> Vec<(reedline::Span, String)> {
let mut output = vec![];
let builtins = ["$nu", "$scope", "$in", "$config", "$env", "$nothing"];
let builtins = ["$nu", "$in", "$config", "$env", "$nothing"];
for builtin in builtins {
if builtin.as_bytes().starts_with(prefix) {

673
crates/nu-engine/src/eval.rs
View file

@ -672,6 +672,343 @@ pub fn eval_subexpression(
Ok(input)
}
pub fn create_scope(
engine_state: &EngineState,
stack: &Stack,
span: Span,
) -> Result<Value, ShellError> {
let mut output_cols = vec![];
let mut output_vals = vec![];
let mut vars = vec![];
let mut commands = vec![];
let mut aliases = vec![];
let mut overlays = vec![];
for frame in &engine_state.scope {
for var in &frame.vars {
let var_name = Value::string(String::from_utf8_lossy(var.0).to_string(), span);
let var_type = Value::string(engine_state.get_var(*var.1).to_string(), span);
let var_value = if let Ok(val) = stack.get_var(*var.1, span) {
val
} else {
Value::nothing(span)
};
vars.push(Value::Record {
cols: vec!["name".to_string(), "type".to_string(), "value".to_string()],
vals: vec![var_name, var_type, var_value],
span,
})
}
for command in &frame.decls {
let mut cols = vec![];
let mut vals = vec![];
cols.push("command".into());
vals.push(Value::String {
val: String::from_utf8_lossy(command.0).to_string(),
span,
});
let decl = engine_state.get_decl(*command.1);
let signature = decl.signature();
cols.push("category".to_string());
vals.push(Value::String {
val: signature.category.to_string(),
span,
});
// signature
let mut sig_records = vec![];
{
let sig_cols = vec![
"command".to_string(),
"parameter_name".to_string(),
"parameter_type".to_string(),
"syntax_shape".to_string(),
"is_optional".to_string(),
"short_flag".to_string(),
"description".to_string(),
];
// required_positional
for req in signature.required_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(req.name, span),
Value::string("positional", span),
Value::string(req.shape.to_string(), span),
Value::boolean(false, span),
Value::nothing(span),
Value::string(req.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
// optional_positional
for opt in signature.optional_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(opt.name, span),
Value::string("positional", span),
Value::string(opt.shape.to_string(), span),
Value::boolean(true, span),
Value::nothing(span),
Value::string(opt.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
{
// rest_positional
if let Some(rest) = signature.rest_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(rest.name, span),
Value::string("rest", span),
Value::string(rest.shape.to_string(), span),
Value::boolean(true, span),
Value::nothing(span),
Value::string(rest.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
}
// named flags
for named in signature.named {
let flag_type;
// Skip the help flag
if named.long == "help" {
continue;
}
let shape = if let Some(arg) = named.arg {
flag_type = Value::string("named", span);
Value::string(arg.to_string(), span)
} else {
flag_type = Value::string("switch", span);
Value::nothing(span)
};
let short_flag = if let Some(c) = named.short {
Value::string(c, span)
} else {
Value::nothing(span)
};
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(named.long, span),
flag_type,
shape,
Value::boolean(!named.required, span),
short_flag,
Value::string(named.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
}
cols.push("signature".to_string());
vals.push(Value::List {
vals: sig_records,
span,
});
cols.push("usage".to_string());
vals.push(Value::String {
val: decl.usage().into(),
span,
});
cols.push("examples".to_string());
vals.push(Value::List {
vals: decl
.examples()
.into_iter()
.map(|x| Value::Record {
cols: vec!["description".into(), "example".into()],
vals: vec![
Value::String {
val: x.description.to_string(),
span,
},
Value::String {
val: x.example.to_string(),
span,
},
],
span,
})
.collect(),
span,
});
cols.push("is_binary".to_string());
vals.push(Value::Bool {
val: decl.is_binary(),
span,
});
cols.push("is_private".to_string());
vals.push(Value::Bool {
val: decl.is_private(),
span,
});
cols.push("is_builtin".to_string());
vals.push(Value::Bool {
val: decl.is_builtin(),
span,
});
cols.push("is_sub".to_string());
vals.push(Value::Bool {
val: decl.is_sub(),
span,
});
cols.push("is_plugin".to_string());
vals.push(Value::Bool {
val: decl.is_plugin().is_some(),
span,
});
cols.push("is_custom".to_string());
vals.push(Value::Bool {
val: decl.get_block_id().is_some(),
span,
});
cols.push("is_extern".to_string());
vals.push(Value::Bool {
val: decl.is_known_external(),
span,
});
cols.push("creates_scope".to_string());
vals.push(Value::Bool {
val: signature.creates_scope,
span,
});
cols.push("extra_usage".to_string());
vals.push(Value::String {
val: decl.extra_usage().into(),
span,
});
commands.push(Value::Record { cols, vals, span })
}
for (alias_name, alias_id) in &frame.aliases {
let alias = engine_state.get_alias(*alias_id);
let mut alias_text = String::new();
for span in alias {
let contents = engine_state.get_span_contents(span);
if !alias_text.is_empty() {
alias_text.push(' ');
}
alias_text.push_str(&String::from_utf8_lossy(contents).to_string());
}
aliases.push((
Value::String {
val: String::from_utf8_lossy(alias_name).to_string(),
span,
},
Value::string(alias_text, span),
));
}
for overlay in &frame.overlays {
overlays.push(Value::String {
val: String::from_utf8_lossy(overlay.0).to_string(),
span,
});
}
}
output_cols.push("vars".to_string());
output_vals.push(Value::List { vals: vars, span });
commands.sort_by(|a, b| match (a, b) {
(Value::Record { vals: rec_a, .. }, Value::Record { vals: rec_b, .. }) => {
// Comparing the first value from the record
// It is expected that the first value is the name of the column
// The names of the commands should be a value string
match (rec_a.get(0), rec_b.get(0)) {
(Some(val_a), Some(val_b)) => match (val_a, val_b) {
(Value::String { val: str_a, .. }, Value::String { val: str_b, .. }) => {
str_a.cmp(str_b)
}
_ => Ordering::Equal,
},
_ => Ordering::Equal,
}
}
_ => Ordering::Equal,
});
output_cols.push("commands".to_string());
output_vals.push(Value::List {
vals: commands,
span,
});
aliases.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
output_cols.push("aliases".to_string());
output_vals.push(Value::List {
vals: aliases
.into_iter()
.map(|(alias, value)| Value::Record {
cols: vec!["alias".into(), "expansion".into()],
vals: vec![alias, value],
span,
})
.collect(),
span,
});
overlays.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
output_cols.push("overlays".to_string());
output_vals.push(Value::List {
vals: overlays,
span,
});
Ok(Value::Record {
cols: output_cols,
vals: output_vals,
span,
})
}
pub fn eval_variable(
engine_state: &EngineState,
stack: &Stack,
@ -723,6 +1060,9 @@ pub fn eval_variable(
output_cols.push("cwd".into());
output_vals.push(Value::String { val: cwd, span });
output_cols.push("scope".into());
output_vals.push(create_scope(engine_state, stack, span)?);
if let Some(home_path) = nu_path::home_dir() {
if let Some(home_path_str) = home_path.to_str() {
output_cols.push("home-path".into());
@ -748,339 +1088,6 @@ pub fn eval_variable(
span,
})
}
nu_protocol::SCOPE_VARIABLE_ID => {
let mut output_cols = vec![];
let mut output_vals = vec![];
let mut vars = vec![];
let mut commands = vec![];
let mut aliases = vec![];
let mut overlays = vec![];
for frame in &engine_state.scope {
for var in &frame.vars {
let var_name = Value::string(String::from_utf8_lossy(var.0).to_string(), span);
let var_type = Value::string(engine_state.get_var(*var.1).to_string(), span);
let var_value = if let Ok(val) = stack.get_var(*var.1, span) {
val
} else {
Value::nothing(span)
};
vars.push(Value::Record {
cols: vec!["name".to_string(), "type".to_string(), "value".to_string()],
vals: vec![var_name, var_type, var_value],
span,
})
}
for command in &frame.decls {
let mut cols = vec![];
let mut vals = vec![];
cols.push("command".into());
vals.push(Value::String {
val: String::from_utf8_lossy(command.0).to_string(),
span,
});
let decl = engine_state.get_decl(*command.1);
let signature = decl.signature();
cols.push("category".to_string());
vals.push(Value::String {
val: signature.category.to_string(),
span,
});
// signature
let mut sig_records = vec![];
{
let sig_cols = vec![
"command".to_string(),
"parameter_name".to_string(),
"parameter_type".to_string(),
"syntax_shape".to_string(),
"is_optional".to_string(),
"short_flag".to_string(),
"description".to_string(),
];
// required_positional
for req in signature.required_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(req.name, span),
Value::string("positional", span),
Value::string(req.shape.to_string(), span),
Value::boolean(false, span),
Value::nothing(span),
Value::string(req.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
// optional_positional
for opt in signature.optional_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(opt.name, span),
Value::string("positional", span),
Value::string(opt.shape.to_string(), span),
Value::boolean(true, span),
Value::nothing(span),
Value::string(opt.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
{
// rest_positional
if let Some(rest) = signature.rest_positional {
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(rest.name, span),
Value::string("rest", span),
Value::string(rest.shape.to_string(), span),
Value::boolean(true, span),
Value::nothing(span),
Value::string(rest.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
}
// named flags
for named in signature.named {
let flag_type;
// Skip the help flag
if named.long == "help" {
continue;
}
let shape = if let Some(arg) = named.arg {
flag_type = Value::string("named", span);
Value::string(arg.to_string(), span)
} else {
flag_type = Value::string("switch", span);
Value::nothing(span)
};
let short_flag = if let Some(c) = named.short {
Value::string(c, span)
} else {
Value::nothing(span)
};
let sig_vals = vec![
Value::string(&signature.name, span),
Value::string(named.long, span),
flag_type,
shape,
Value::boolean(!named.required, span),
short_flag,
Value::string(named.desc, span),
];
sig_records.push(Value::Record {
cols: sig_cols.clone(),
vals: sig_vals,
span,
});
}
}
cols.push("signature".to_string());
vals.push(Value::List {
vals: sig_records,
span,
});
cols.push("usage".to_string());
vals.push(Value::String {
val: decl.usage().into(),
span,
});
cols.push("examples".to_string());
vals.push(Value::List {
vals: decl
.examples()
.into_iter()
.map(|x| Value::Record {
cols: vec!["description".into(), "example".into()],
vals: vec![
Value::String {
val: x.description.to_string(),
span,
},
Value::String {
val: x.example.to_string(),
span,
},
],
span,
})
.collect(),
span,
});
cols.push("is_binary".to_string());
vals.push(Value::Bool {
val: decl.is_binary(),
span,
});
cols.push("is_private".to_string());
vals.push(Value::Bool {
val: decl.is_private(),
span,
});
cols.push("is_builtin".to_string());
vals.push(Value::Bool {
val: decl.is_builtin(),
span,
});
cols.push("is_sub".to_string());
vals.push(Value::Bool {
val: decl.is_sub(),
span,
});
cols.push("is_plugin".to_string());
vals.push(Value::Bool {
val: decl.is_plugin().is_some(),
span,
});
cols.push("is_custom".to_string());
vals.push(Value::Bool {
val: decl.get_block_id().is_some(),
span,
});
cols.push("is_extern".to_string());
vals.push(Value::Bool {
val: decl.is_known_external(),
span,
});
cols.push("creates_scope".to_string());
vals.push(Value::Bool {
val: signature.creates_scope,
span,
});
cols.push("extra_usage".to_string());
vals.push(Value::String {
val: decl.extra_usage().into(),
span,
});
commands.push(Value::Record { cols, vals, span })
}
for (alias_name, alias_id) in &frame.aliases {
let alias = engine_state.get_alias(*alias_id);
let mut alias_text = String::new();
for span in alias {
let contents = engine_state.get_span_contents(span);
if !alias_text.is_empty() {
alias_text.push(' ');
}
alias_text.push_str(&String::from_utf8_lossy(contents).to_string());
}
aliases.push((
Value::String {
val: String::from_utf8_lossy(alias_name).to_string(),
span,
},
Value::string(alias_text, span),
));
}
for overlay in &frame.overlays {
overlays.push(Value::String {
val: String::from_utf8_lossy(overlay.0).to_string(),
span,
});
}
}
output_cols.push("vars".to_string());
output_vals.push(Value::List { vals: vars, span });
commands.sort_by(|a, b| match (a, b) {
(Value::Record { vals: rec_a, .. }, Value::Record { vals: rec_b, .. }) => {
// Comparing the first value from the record
// It is expected that the first value is the name of the column
// The names of the commands should be a value string
match (rec_a.get(0), rec_b.get(0)) {
(Some(val_a), Some(val_b)) => match (val_a, val_b) {
(
Value::String { val: str_a, .. },
Value::String { val: str_b, .. },
) => str_a.cmp(str_b),
_ => Ordering::Equal,
},
_ => Ordering::Equal,
}
}
_ => Ordering::Equal,
});
output_cols.push("commands".to_string());
output_vals.push(Value::List {
vals: commands,
span,
});
aliases.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
output_cols.push("aliases".to_string());
output_vals.push(Value::List {
vals: aliases
.into_iter()
.map(|(alias, value)| Value::Record {
cols: vec!["alias".into(), "expansion".into()],
vals: vec![alias, value],
span,
})
.collect(),
span,
});
overlays.sort_by(|a, b| a.partial_cmp(b).unwrap_or(Ordering::Equal));
output_cols.push("overlays".to_string());
output_vals.push(Value::List {
vals: overlays,
span,
});
Ok(Value::Record {
cols: output_cols,
vals: output_vals,
span,
})
}
ENV_VARIABLE_ID => {
let env_vars = stack.get_env_vars(engine_state);
let env_columns = env_vars.keys();

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

@ -1556,16 +1556,6 @@ pub fn parse_variable_expr(
},
None,
);
} else if contents == b"$scope" {
return (
Expression {
expr: Expr::Var(nu_protocol::SCOPE_VARIABLE_ID),
span,
ty: Type::Unknown,
custom_completion: None,
},
None,
);
} else if contents == b"$in" {
return (
Expression {

7
crates/nu-protocol/src/engine/engine_state.rs
View file

@ -175,10 +175,9 @@ pub struct EngineState {
}
pub const NU_VARIABLE_ID: usize = 0;
pub const SCOPE_VARIABLE_ID: usize = 1;
pub const IN_VARIABLE_ID: usize = 2;
pub const CONFIG_VARIABLE_ID: usize = 3;
pub const ENV_VARIABLE_ID: usize = 4;
pub const IN_VARIABLE_ID: usize = 1;
pub const CONFIG_VARIABLE_ID: usize = 2;
pub const ENV_VARIABLE_ID: usize = 3;
// NOTE: If you add more to this list, make sure to update the > checks based on the last in the list
impl EngineState {

4
crates/nu-protocol/src/lib.rs
View file

@ -15,9 +15,7 @@ mod value;
pub use value::Value;
pub use config::*;
pub use engine::{
CONFIG_VARIABLE_ID, ENV_VARIABLE_ID, IN_VARIABLE_ID, NU_VARIABLE_ID, SCOPE_VARIABLE_ID,
};
pub use engine::{CONFIG_VARIABLE_ID, ENV_VARIABLE_ID, IN_VARIABLE_ID, NU_VARIABLE_ID};
pub use example::*;
pub use exportable::*;
pub use id::*;

4
docs/Modules_and_Overlays.md
View file

@ -25,7 +25,7 @@ You can say that the module `greetings` exports an overlay which consists of two
By itself, the module does not do anything.
We can verify its existence by printing all available overlays:
```
> $scope.overlays
> $nu.scope.overlays
╭───┬───────────╮
│ 0 │ greetings │
╰───┴───────────╯
@ -306,7 +306,7 @@ It creates the `$config` variable using the module system.
## Known Issues
* It might be more appropriate to use `$scope.modules` instead of `$scope.overlays`
* It might be more appropriate to use `$nu.scope.modules` instead of `$nu.scope.overlays`
## Future Design Ideas

2
docs/make_docs.nu
View file

@ -1,6 +1,6 @@
let vers = (version).version
for command in ($scope.commands | where is_custom == false && is_extern == false) {
for command in ($nu.scope.commands | where is_custom == false && is_extern == false) {
let top = $"---
title: ($command.command)
layout: command

2
src/tests/test_engine.rs
View file

@ -78,7 +78,7 @@ fn help_works_with_missing_requirements() -> TestResult {
#[test]
fn scope_variable() -> TestResult {
run_test(
r#"let x = 3; $scope.vars | where name == "$x" | get type.0"#,
r#"let x = 3; $nu.scope.vars | where name == "$x" | get type.0"#,
"int",
)
}