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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use phf_shared;
use serde_json::{self, Value};
use std::env;
use std::fmt;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
use std::process::Command;
use std::str;
use std::time::Instant;
fn main() {
let start = Instant::now();
let target = env::var("TARGET").unwrap();
let host = env::var("HOST").unwrap();
if target.contains("windows") && host != target {
assert_eq!(
host, "x86_64-pc-windows-msvc",
"Only cross-compiling from x64 is supported"
);
assert_eq!(
target, "i686-pc-windows-msvc",
"Only cross-compiling to x86 is supported"
);
assert!(env::var("VSINSTALLDIR").is_err());
// When cross-compiling on Windows, we need to ensure that the PATH is
// set up appropriately for the target before invoking make.
if env::var("VCVARSALL_PATH").is_err() {
panic!(
"Need to provide VCVARSALL_PATH value with path to \
vcvarsall.bat from Visual Studio installation"
);
}
let vcvars = Command::new("vcvars.bat").output().unwrap();
assert!(vcvars.status.success());
let output = str::from_utf8(&vcvars.stdout).unwrap();
for line in output.lines() {
let mut parts = line.splitn(2, '=');
if let Some(name) = parts.next() {
if let Some(value) = parts.next() {
env::set_var(name, value);
}
}
}
}
// This must use the Ninja generator -- it's the only one that
// parallelizes cmake's output properly. (Cmake generates
// separate makefiles, each of which try to build
// ParserResults.pkl, and then stomp on eachother.)
let mut build = cmake::Config::new(".");
let target = env::var("TARGET").unwrap();
if target.contains("windows-msvc") {
// We must use Ninja on Windows for this -- msbuild is painfully slow,
// and ninja is easier to install than make.
build.generator("Ninja");
// We have to explicitly specify the full path to link.exe,
// for reasons that I don't understand. If we just give
// link.exe, it tries to use script-*/out/link.exe, which of
// course does not exist.
let link = std::process::Command::new("where")
.arg("link.exe")
.output()
.unwrap();
let link_path: Vec<&str> = std::str::from_utf8(&link.stdout)
.unwrap()
.split("\r\n")
.collect();
build.define("CMAKE_LINKER", link_path[0]);
}
build.build();
println!(
"Binding generation completed in {}s",
start.elapsed().as_secs()
);
let json = PathBuf::from(env::var_os("OUT_DIR").unwrap())
.join("build")
.join("InterfaceObjectMapData.json");
let json: Value = serde_json::from_reader(File::open(&json).unwrap()).unwrap();
let mut map = phf_codegen::Map::new();
for (key, value) in json.as_object().unwrap() {
map.entry(Bytes(key), value.as_str().unwrap());
}
let phf = PathBuf::from(env::var_os("OUT_DIR").unwrap()).join("InterfaceObjectMapPhf.rs");
let mut phf = File::create(&phf).unwrap();
write!(
&mut phf,
"pub static MAP: phf::Map<&'static [u8], unsafe fn(*mut JSContext, HandleObject)> = "
)
.unwrap();
map.build(&mut phf).unwrap();
write!(&mut phf, ";\n").unwrap();
}
#[derive(Eq, Hash, PartialEq)]
struct Bytes<'a>(&'a str);
impl<'a> fmt::Debug for Bytes<'a> {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
// https://github.com/rust-lang/rust/issues/55223
// should technically be just `write!(formatter, "b\"{}\"", self.0)
// but the referenced issue breaks promotion in the surrounding code
write!(formatter, "{{ const FOO: &[u8] = b\"{}\"; FOO }}", self.0)
}
}
impl<'a> phf_shared::PhfHash for Bytes<'a> {
fn phf_hash<H: std::hash::Hasher>(&self, hasher: &mut H) {
self.0.as_bytes().phf_hash(hasher)
}
}
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