1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* 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::{self, FmtConst};
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::time::Instant;
fn main() {
let start = Instant::now();
let style_out_dir = PathBuf::from(env::var_os("DEP_SERVO_STYLE_CRATE_OUT_DIR").unwrap());
let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let status = Command::new(find_python())
.arg("dom/bindings/codegen/run.py")
.arg(style_out_dir.join("css-properties.json"))
.arg(&out_dir)
.status()
.unwrap();
if !status.success() {
std::process::exit(1)
}
println!("Binding generation completed in {:?}", start.elapsed());
let json = out_dir.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], fn(JSContext, HandleObject)> = {};\n",
map.build(),
)
.unwrap();
}
#[derive(Eq, Hash, PartialEq)]
struct Bytes<'a>(&'a str);
impl<'a> FmtConst for Bytes<'a> {
fn fmt_const(&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)
}
}
fn find_python() -> String {
env::var("PYTHON3").ok().unwrap_or_else(|| {
let candidates = if cfg!(windows) {
["python3.8.exe", "python38.exe", "python.exe"]
} else {
["python3.8", "python3", "python"]
};
for &name in &candidates {
if Command::new(name)
.arg("--version")
.output()
.ok()
.map_or(false, |out| out.status.success())
{
return name.to_owned();
}
}
panic!(
"Can't find python (tried {})! Try fixing PATH or setting the PYTHON3 env var",
candidates.join(", ")
)
})
}
|
