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Revert "Allow NU_LIBS_DIR and friends to be const" (#8501)

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Reverts nushell/nushell#8310

In anticipation that we may want to revert this PR. I'm starting the
process because of this issue.

This stopped working
```
let-env NU_LIB_DIRS = [
    ($nu.config-path | path dirname | path join 'scripts')
    'C:\Users\username\source\repos\forks\nu_scripts'
    ($nu.config-path | path dirname)
]
```
You have to do this now instead.
```
const NU_LIB_DIRS = [
    'C:\Users\username\AppData\Roaming\nushell\scripts'
    'C:\Users\username\source\repos\forks\nu_scripts'
    'C:\Users\username\AppData\Roaming\nushell'
]
```

In talking with @kubouch, he was saying that the `let-env` version
should keep working. Hopefully it's a small change.
This commit is contained in:
Darren Schroeder
2023-03-17 09:33:24 -05:00
committed by GitHub
parent eb2e2e6370
commit ef7fbf4bf9
13 changed files with 116 additions and 264 deletions
Download Patch File Download Diff File Expand all files Collapse all files

141
crates/nu-parser/src/parse_keywords.rs
View File

@@ -1,5 +1,4 @@
use log::trace;
use nu_engine::get_dirs_var_from_call;
use nu_path::canonicalize_with;
use nu_protocol::{
ast::{
@@ -8,14 +7,13 @@ use nu_protocol::{
},
engine::{StateWorkingSet, DEFAULT_OVERLAY_NAME},
span, Alias, BlockId, Exportable, Module, PositionalArg, Span, Spanned, SyntaxShape, Type,
VarId,
};
use std::collections::{HashMap, HashSet};
use std::collections::HashSet;
use std::path::{Path, PathBuf};
pub const LIB_DIRS_VAR: &str = "NU_LIB_DIRS";
static LIB_DIRS_ENV: &str = "NU_LIB_DIRS";
#[cfg(feature = "plugin")]
pub const PLUGIN_DIRS_VAR: &str = "NU_PLUGIN_DIRS";
static PLUGIN_DIRS_ENV: &str = "NU_PLUGIN_DIRS";
use crate::{
eval::{eval_constant, value_as_string},
@@ -964,7 +962,7 @@ pub fn parse_old_alias(
decl_id,
redirect_stdout: true,
redirect_stderr: false,
parser_info: HashMap::new(),
parser_info: vec![],
}));
return (
Pipeline::from_vec(vec![Expression {
@@ -1265,7 +1263,7 @@ pub fn parse_export_in_module(
arguments: vec![],
redirect_stdout: true,
redirect_stderr: false,
parser_info: HashMap::new(),
parser_info: vec![],
});
let exportables = if let Some(kw_span) = spans.get(1) {
@@ -2089,7 +2087,7 @@ pub fn parse_module(
],
redirect_stdout: true,
redirect_stderr: false,
parser_info: HashMap::new(),
parser_info: vec![],
});
(
@@ -2231,12 +2229,9 @@ pub fn parse_use(
unescape_unquote_string(&import_pattern.head.name, import_pattern.head.span);
if err.is_none() {
if let Some(module_path) = find_in_dirs_with_id(
&module_filename,
working_set,
&cwd,
get_dirs_var_from_call(&call),
) {
if let Some(module_path) =
find_in_dirs(&module_filename, working_set, &cwd, LIB_DIRS_ENV)
{
if let Some(i) = working_set
.parsed_module_files
.iter()
@@ -2449,7 +2444,7 @@ pub fn parse_use(
};
let mut call = call;
call.set_parser_info("import_pattern".to_string(), import_pattern_expr);
call.add_parser_info(import_pattern_expr);
(
Pipeline::from_vec(vec![Expression {
@@ -2670,7 +2665,7 @@ pub fn parse_hide(
};
let mut call = call;
call.set_parser_info("import_pattern".to_string(), import_pattern_expr);
call.add_parser_info(import_pattern_expr);
(
Pipeline::from_vec(vec![Expression {
@@ -2894,12 +2889,9 @@ pub fn parse_overlay_use(
if let Ok(module_filename) =
String::from_utf8(trim_quotes(overlay_name.as_bytes()).to_vec())
{
if let Some(module_path) = find_in_dirs_with_id(
&module_filename,
working_set,
&cwd,
get_dirs_var_from_call(&call),
) {
if let Some(module_path) =
find_in_dirs(&module_filename, working_set, &cwd, LIB_DIRS_ENV)
{
let overlay_name = if let Some(stem) = module_path.file_stem() {
stem.to_string_lossy().to_string()
} else {
@@ -2990,19 +2982,16 @@ pub fn parse_overlay_use(
// Change the call argument to include the Overlay expression with the module ID
let mut call = call;
call.set_parser_info(
"overlay_expr".to_string(),
Expression {
expr: Expr::Overlay(if is_module_updated {
Some(origin_module_id)
} else {
None
}),
span: overlay_name_span,
ty: Type::Any,
custom_completion: None,
},
);
call.add_parser_info(Expression {
expr: Expr::Overlay(if is_module_updated {
Some(origin_module_id)
} else {
None
}),
span: overlay_name_span,
ty: Type::Any,
custom_completion: None,
});
let pipeline = Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
@@ -3171,7 +3160,7 @@ pub fn parse_let_or_const(
],
redirect_stdout: true,
redirect_stderr: false,
parser_info: HashMap::new(),
parser_info: vec![],
});
return (
@@ -3293,7 +3282,7 @@ pub fn parse_mut(
],
redirect_stdout: true,
redirect_stderr: false,
parser_info: HashMap::new(),
parser_info: vec![],
});
return (
@@ -3422,7 +3411,7 @@ pub fn parse_source(
}
};
if let Some(path) = find_in_dirs(&filename, working_set, &cwd, LIB_DIRS_VAR) {
if let Some(path) = find_in_dirs(&filename, working_set, &cwd, LIB_DIRS_ENV) {
if let Ok(contents) = std::fs::read(&path) {
// Change currently parsed directory
let prev_currently_parsed_cwd = if let Some(parent) = path.parent() {
@@ -3468,15 +3457,12 @@ pub fn parse_source(
// FIXME: Adding this expression to the positional creates a syntax highlighting error
// after writing `source example.nu`
call_with_block.set_parser_info(
"block_id".to_string(),
Expression {
expr: Expr::Int(block_id as i64),
span: spans[1],
ty: Type::Any,
custom_completion: None,
},
);
call_with_block.add_parser_info(Expression {
expr: Expr::Int(block_id as i64),
span: spans[1],
ty: Type::Any,
custom_completion: None,
});
return (
Pipeline::from_vec(vec![Expression {
@@ -3686,7 +3672,7 @@ pub fn parse_register(
if let Some(err) = err {
Err(err)
} else {
let path = if let Some(p) = find_in_dirs(&name, working_set, &cwd, PLUGIN_DIRS_VAR)
let path = if let Some(p) = find_in_dirs(&name, working_set, &cwd, PLUGIN_DIRS_ENV)
{
p
} else {
@@ -3831,67 +3817,12 @@ pub fn parse_register(
/// a) the directory of a file currently being parsed
/// b) current working directory (PWD)
///
/// Then, if the file is not found in the actual cwd, dirs_var is checked.
/// If dirs_var is an Expr::Var, then we look for a const with that VarId,
/// and if dirs_var is an Expr::String, then we look for an environment with that name.
/// If there is a relative path in dirs_var, it is assumed to be relative to the actual cwd
/// Then, if the file is not found in the actual cwd, NU_LIB_DIRS is checked.
/// If there is a relative path in NU_LIB_DIRS, it is assumed to be relative to the actual cwd
/// determined in the first step.
///
/// Always returns an absolute path
pub fn find_in_dirs_with_id(
filename: &str,
working_set: &StateWorkingSet,
cwd: &str,
dirs_var_id: Option<VarId>,
) -> Option<PathBuf> {
// Choose whether to use file-relative or PWD-relative path
let actual_cwd = if let Some(currently_parsed_cwd) = &working_set.currently_parsed_cwd {
currently_parsed_cwd.as_path()
} else {
Path::new(cwd)
};
if let Ok(p) = canonicalize_with(filename, actual_cwd) {
return Some(p);
}
let path = Path::new(filename);
if !path.is_relative() {
return None;
}
working_set
.find_constant(dirs_var_id?)?
.as_list()
.ok()?
.iter()
.map(|lib_dir| -> Option<PathBuf> {
let dir = lib_dir.as_path().ok()?;
let dir_abs = canonicalize_with(dir, actual_cwd).ok()?;
canonicalize_with(filename, dir_abs).ok()
})
.find(Option::is_some)
.flatten()
}
pub fn find_dirs_var(working_set: &StateWorkingSet, var_name: &str) -> Option<VarId> {
working_set
.find_variable(format!("${}", var_name).as_bytes())
.filter(|var_id| working_set.find_constant(*var_id).is_some())
}
pub fn find_in_dirs(
filename: &str,
working_set: &StateWorkingSet,
cwd: &str,
dirs_var_name: &str,
) -> Option<PathBuf> {
find_dirs_var(working_set, dirs_var_name)
.and_then(|var_id| find_in_dirs_with_id(filename, working_set, cwd, Some(var_id)))
.or_else(|| find_in_dirs_old(filename, working_set, cwd, dirs_var_name))
}
// TODO: remove (see #8310)
pub fn find_in_dirs_old(
filename: &str,
working_set: &StateWorkingSet,
cwd: &str,