fluencelabs/wasm-bindgen
1
0
Fork 0
mirror of https://github.com/fluencelabs/wasm-bindgen synced 2025-06-16 22:41:24 +00:00
Code Issues Projects Releases Wiki Activity

Use std::fs read/write conveniences

Browse Source 
In addition to being more ergonomic these are much more efficient at reading
large files as they preallocate internally. This provides a nice speed boost
locally, reducing the overhead of `wasm-bindgen-test-runner` from 0.23s to
0.19s, yay!
This commit is contained in:
Alex Crichton
2018-07-25 16:06:47 -07:00
parent f3942229fe
commit 0992e45e7f
4 changed files with 17 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
crates/cli-support/src/wasm2es6js.rs
View File

@ -2,8 +2,8 @@ extern crate base64;
extern crate tempfile;
use std::collections::{HashMap, HashSet};
use std::fs::File;
use std::io::{self, Read, Write};
use std::fs;
use std::io;
use std::process::Command;
use failure::{Error, ResultExt};
@ -375,8 +375,7 @@ impl Output {
let td = tempfile::tempdir()?;
let wasm = serialize(self.module)?;
let wasm_file = td.as_ref().join("foo.wasm");
File::create(&wasm_file)
.and_then(|mut f| f.write_all(&wasm))
fs::write(&wasm_file, wasm)
.with_context(|_| format!("failed to write wasm to `{}`", wasm_file.display()))?;
let wast_file = td.as_ref().join("foo.wast");
@ -396,9 +395,7 @@ impl Output {
"wasm2asm",
)?;
let mut asm_func = String::new();
File::open(&js_file)
.and_then(|mut f| f.read_to_string(&mut asm_func))
let asm_func = fs::read_to_string(&js_file)
.with_context(|_| format!("failed to read `{}`", js_file.display()))?;
let mut make_imports = String::from(