Browse Source

Made a simple async iterator out of pure async

master
Julio Biason 8 months ago
parent
commit
3089b56778
  1. 157
      asyncnext/Cargo.lock
  2. 9
      asyncnext/Cargo.toml
  3. 3
      asyncnext/README.md
  4. 54
      asyncnext/src/main.rs

157
asyncnext/Cargo.lock generated

@ -0,0 +1,157 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "addr2line"
version = "0.21.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
dependencies = [
"gimli",
]
[[package]]
name = "adler"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
[[package]]
name = "asyncnext"
version = "0.1.0"
dependencies = [
"tokio",
]
[[package]]
name = "backtrace"
version = "0.3.71"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "26b05800d2e817c8b3b4b54abd461726265fa9789ae34330622f2db9ee696f9d"
dependencies = [
"addr2line",
"cc",
"cfg-if",
"libc",
"miniz_oxide",
"object",
"rustc-demangle",
]
[[package]]
name = "cc"
version = "1.0.92"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2678b2e3449475e95b0aa6f9b506a28e61b3dc8996592b983695e8ebb58a8b41"
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "gimli"
version = "0.28.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
[[package]]
name = "libc"
version = "0.2.153"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
[[package]]
name = "memchr"
version = "2.7.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
[[package]]
name = "miniz_oxide"
version = "0.7.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9d811f3e15f28568be3407c8e7fdb6514c1cda3cb30683f15b6a1a1dc4ea14a7"
dependencies = [
"adler",
]
[[package]]
name = "object"
version = "0.32.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a6a622008b6e321afc04970976f62ee297fdbaa6f95318ca343e3eebb9648441"
dependencies = [
"memchr",
]
[[package]]
name = "pin-project-lite"
version = "0.2.14"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bda66fc9667c18cb2758a2ac84d1167245054bcf85d5d1aaa6923f45801bdd02"
[[package]]
name = "proc-macro2"
version = "1.0.79"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
dependencies = [
"unicode-ident",
]
[[package]]
name = "quote"
version = "1.0.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
dependencies = [
"proc-macro2",
]
[[package]]
name = "rustc-demangle"
version = "0.1.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
[[package]]
name = "syn"
version = "2.0.52"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b699d15b36d1f02c3e7c69f8ffef53de37aefae075d8488d4ba1a7788d574a07"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "tokio"
version = "1.37.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1adbebffeca75fcfd058afa480fb6c0b81e165a0323f9c9d39c9697e37c46787"
dependencies = [
"backtrace",
"pin-project-lite",
"tokio-macros",
]
[[package]]
name = "tokio-macros"
version = "2.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "unicode-ident"
version = "1.0.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"

9
asyncnext/Cargo.toml

@ -0,0 +1,9 @@
[package]
name = "asyncnext"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
tokio = { version = "1.37.0", features = ["rt", "fs", "macros"] }

3
asyncnext/README.md

@ -0,0 +1,3 @@
# AsyncNext
Trying to write my own async next() thingy.

54
asyncnext/src/main.rs

@ -0,0 +1,54 @@
use std::path::Path;
use std::path::PathBuf;
use tokio::fs::ReadDir;
struct Walker {
path: PathBuf,
}
impl Walker {
pub fn new(base: &Path) -> Self {
Self {
path: base.to_path_buf(),
}
}
pub async fn children(&self) -> WalkerIterator {
WalkerIterator::new(&self.path).await
}
}
struct WalkerIterator {
walking: ReadDir,
}
impl WalkerIterator {
async fn new(path: &Path) -> Self {
Self {
walking: tokio::fs::read_dir(&path).await.unwrap(),
}
}
async fn next(&mut self) -> Option<String> {
let current = self.walking.next_entry().await.ok()??;
Some(current.file_name().to_string_lossy().to_string())
}
}
#[tokio::main(flavor = "current_thread")]
async fn main() {
let mut args = std::env::args();
let _ = args.next();
let base_path = args.next().unwrap();
let walker = Walker::new(&Path::new(&base_path).canonicalize().unwrap());
let mut iter = walker.children().await;
while let Some(child) = iter.next().await {
println!("{child}");
}
//while let Some(child) = walker.children().await.next().await {
// println!("{child}")
//}
}
Loading…
Cancel
Save