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Migrate to a new PWD API (#12603)

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This is the first PR towards migrating to a new `$env.PWD` API that
returns potentially un-canonicalized paths. Refer to PR #12515 for
motivations.

## New API: `EngineState::cwd()`

The goal of the new API is to cover both parse-time and runtime use
case, and avoid unintentional misuse. It takes an `Option<Stack>` as
argument, which if supplied, will search for `$env.PWD` on the stack in
additional to the engine state. I think with this design, there's less
confusion over parse-time and runtime environments. If you have access
to a stack, just supply it; otherwise supply `None`.

## Deprecation of other PWD-related APIs

Other APIs are re-implemented using `EngineState::cwd()` and properly
documented. They're marked deprecated, but their behavior is unchanged.
Unused APIs are deleted, and code that accesses `$env.PWD` directly
without using an API is rewritten.

Deprecated APIs:

* `EngineState::current_work_dir()`
* `StateWorkingSet::get_cwd()`
* `env::current_dir()`
* `env::current_dir_str()`
* `env::current_dir_const()`
* `env::current_dir_str_const()`

Other changes:

* `EngineState::get_cwd()` (deleted)
* `StateWorkingSet::list_env()` (deleted)
* `repl::do_run_cmd()` (rewritten with `env::current_dir_str()`)

## `cd` and `pwd` now use logical paths by default

This pulls the changes from PR #12515. It's currently somewhat broken
because using non-canonicalized paths exposed a bug in our path
normalization logic (Issue #12602). Once that is fixed, this should
work.

## Future plans

This PR needs some tests. Which test helpers should I use, and where
should I put those tests?

I noticed that unquoted paths are expanded within `eval_filepath()` and
`eval_directory()` before they even reach the `cd` command. This means
every paths is expanded twice. Is this intended?

Once this PR lands, the plan is to review all usages of the deprecated
APIs and migrate them to `EngineState::cwd()`. In the meantime, these
usages are annotated with `#[allow(deprecated)]` to avoid breaking CI.

---------

Co-authored-by: Jakub Žádník <kubouch@gmail.com>
This commit is contained in:
YizhePKU
2024-05-03 19:33:09 +08:00
committed by GitHub
parent f32ecc641f
commit bdb6daa4b5
44 changed files with 551 additions and 275 deletions
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15
crates/nu-cli/tests/support/completions_helpers.rs
View File

@ -8,9 +8,7 @@ use nu_protocol::{
};
use nu_test_support::fs;
use reedline::Suggestion;
use std::path::PathBuf;
const SEP: char = std::path::MAIN_SEPARATOR;
use std::path::{PathBuf, MAIN_SEPARATOR};
fn create_default_context() -> EngineState {
nu_command::add_shell_command_context(nu_cmd_lang::create_default_context())
@ -20,12 +18,11 @@ fn create_default_context() -> EngineState {
pub fn new_engine() -> (PathBuf, String, EngineState, Stack) {
// Target folder inside assets
let dir = fs::fixtures().join("completions");
let mut dir_str = dir
let dir_str = dir
.clone()
.into_os_string()
.into_string()
.unwrap_or_default();
dir_str.push(SEP);
// Create a new engine with default context
let mut engine_state = create_default_context();
@ -77,12 +74,11 @@ pub fn new_engine() -> (PathBuf, String, EngineState, Stack) {
pub fn new_quote_engine() -> (PathBuf, String, EngineState, Stack) {
// Target folder inside assets
let dir = fs::fixtures().join("quoted_completions");
let mut dir_str = dir
let dir_str = dir
.clone()
.into_os_string()
.into_string()
.unwrap_or_default();
dir_str.push(SEP);
// Create a new engine with default context
let mut engine_state = create_default_context();
@ -113,12 +109,11 @@ pub fn new_quote_engine() -> (PathBuf, String, EngineState, Stack) {
pub fn new_partial_engine() -> (PathBuf, String, EngineState, Stack) {
// Target folder inside assets
let dir = fs::fixtures().join("partial_completions");
let mut dir_str = dir
let dir_str = dir
.clone()
.into_os_string()
.into_string()
.unwrap_or_default();
dir_str.push(SEP);
// Create a new engine with default context
let mut engine_state = create_default_context();
@ -165,7 +160,7 @@ pub fn match_suggestions(expected: Vec<String>, suggestions: Vec<Suggestion>) {
// append the separator to the converted path
pub fn folder(path: PathBuf) -> String {
let mut converted_path = file(path);
converted_path.push(SEP);
converted_path.push(MAIN_SEPARATOR);
converted_path
}