extern/nushell
1
0
Fork 1
mirror of https://github.com/nushell/nushell.git synced 2025-08-12 00:50:13 +02:00
Code Issues Packages Projects Releases Wiki Activity

Improves startup time when using std-lib

Browse Source
This commit is contained in:
NotTheDr01ds
2024-09-13 13:24:59 -04:00
parent aaaab8e070
commit 192ca033ca
8 changed files with 46 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
crates/nu-std/src/lib.rs
View File

@ -9,20 +9,16 @@ use nu_protocol::{
};
use std::path::PathBuf;
// Virtual std directory unlikely to appear in user's file system
const NU_STDLIB_VIRTUAL_DIR: &str = "NU_STDLIB_VIRTUAL_DIR";
pub fn load_standard_library(
engine_state: &mut nu_protocol::engine::EngineState,
) -> Result<(), miette::ErrReport> {
trace!("load_standard_library");
let (block, delta) = {
// Using full virtual path to avoid potential conflicts with user having 'std' directory
// in their working directory.
let std_dir = PathBuf::from(NU_STDLIB_VIRTUAL_DIR).join("std");
let std_dir = PathBuf::from("std");
let mut std_files = vec![
("mod.nu", include_str!("../std/mod.nu")),
("core.nu", include_str!("../std/core.nu")),
("dirs.nu", include_str!("../std/dirs.nu")),
("dt.nu", include_str!("../std/dt.nu")),
("help.nu", include_str!("../std/help.nu")),
@ -52,26 +48,15 @@ pub fn load_standard_library(
let std_dir = std_dir.to_string_lossy().to_string();
let source = r#"
# Define the `std` module
module std
# Prelude
use std dirs [
enter
shells
g
n
p
dexit
]
use std pwd
use std/core.nu *
"#;
let _ = working_set.add_virtual_path(std_dir, VirtualPath::Dir(std_virt_paths));
// Add a placeholder file to the stack of files being evaluated.
// The name of this file doesn't matter; it's only there to set the current working directory to NU_STDLIB_VIRTUAL_DIR.
let placeholder = PathBuf::from(NU_STDLIB_VIRTUAL_DIR).join("loading stdlib");
let placeholder = PathBuf::from("loading stdlib");
working_set.files = FileStack::with_file(placeholder);
let block = parse(