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move stylo_test build script guts from Python to Rust
stylo_test's build script is split between Python and Rust. style's build script already has to perform complicated dances to determine an appropriate binary to execute, depending on the platform. To avoid copying and pasting that code, it seems reasonable to simply port the Python code into Rust, thus making the relationship between generated files and the cargo dependency output clearer. The new Rust is somewhat more verbose, but not terribly so.
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parent
b35791f86f
commit
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4 changed files with 57 additions and 45 deletions
1
Cargo.lock
generated
1
Cargo.lock
generated
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@ -3101,6 +3101,7 @@ dependencies = [
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"geckoservo 0.0.1",
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"libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
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"log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
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"regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"selectors 0.19.0",
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"size_of_test 0.0.1",
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"style 0.0.1",
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@ -26,3 +26,6 @@ selectors = {path = "../../../components/selectors", features = ["gecko_like_typ
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size_of_test = {path = "../../../components/size_of_test"}
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style_traits = {path = "../../../components/style_traits"}
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style = {path = "../../../components/style", features = ["gecko"]}
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[build-dependencies]
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regex = "0.2"
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@ -2,24 +2,67 @@
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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extern crate regex;
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use regex::Regex;
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use std::env;
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use std::fs;
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use std::io::Write;
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use std::path;
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use std::process::Command;
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use std::fs::File;
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use std::io::{BufRead, BufReader, Write};
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use std::path::Path;
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fn main() {
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let root_path = Path::new("../../../");
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let bindings_file = root_path.join("components/style/gecko/generated/bindings.rs");
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let glue_file = root_path.join("ports/geckolib/glue.rs");
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println!("cargo:rerun-if-changed=build.rs");
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println!("cargo:rerun-if-changed=check_bindings.py");
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println!("cargo:rerun-if-changed=../../../ports/geckolib/glue.rs");
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println!("cargo:rerun-if-changed=../../../components/style/gecko_bindings/bindings.rs");
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assert!(Command::new("python").arg("./check_bindings.py")
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.spawn().unwrap().wait().unwrap().success());
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println!("cargo:rerun-if-changed={}", glue_file.display());
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println!("cargo:rerun-if-changed={}", bindings_file.display());
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let env_out_dir = env::var("OUT_DIR").unwrap();
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let out_dir = Path::new(&env_out_dir);
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{
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let output = out_dir.join("check_bindings.rs");
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let r = BufReader::new(File::open(bindings_file).unwrap());
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let mut w = File::create(output).unwrap();
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w.write_all(b"fn assert_types() {\n").unwrap();
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let matcher = Regex::new(r"fn\s*Servo_([a-zA-Z0-9_]+)\s*\(").unwrap();
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for line in r.lines() {
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let s = line.unwrap();
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for cap in matcher.captures_iter(&s) {
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// GetStyleVariables is a Servo_* function, but temporarily defined
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// on the Gecko side.
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if &cap[1] != "GetStyleVariables" {
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w.write_all(format!(" [ Servo_{0}, bindings::Servo_{0} ];\n", &cap[1]).as_bytes()).unwrap();
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}
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}
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}
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w.write_all(b"}\n").unwrap();
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}
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{
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let output = out_dir.join("glue.rs");
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let r = BufReader::new(File::open(glue_file).unwrap());
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let mut w = File::create(output).unwrap();
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w.write_all(b"pub use style::gecko::arc_types::*;\n").unwrap();
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for line in r.lines() {
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let s = line.unwrap().replace("pub extern \"C\" fn", "pub unsafe extern \"C\" fn");
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w.write_all(s.as_bytes()).unwrap();
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w.write_all(b"\n").unwrap();
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}
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}
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// https://github.com/rust-lang/cargo/issues/3544
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let style_out_dir = env::var_os("DEP_FOR SOME REASON THE LINKS KEY IS REQUIRED \
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TO PASS DATA AROUND BETWEEN BUILD SCRIPTS_OUT_DIR").unwrap();
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fs::File::create(path::PathBuf::from(env::var_os("OUT_DIR").unwrap()).join("bindings.rs"))
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File::create(out_dir.join("bindings.rs"))
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.unwrap()
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.write_all(format!("include!(concat!({:?}, \"/gecko/structs_debug.rs\"));",
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style_out_dir).as_bytes())
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@ -1,35 +0,0 @@
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#!/usr/bin/env python
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import os
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import re
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ROOT_PATH = os.path.join("..", "..", "..")
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INPUT_FILE = os.path.join(ROOT_PATH, "components", "style", "gecko", "generated", "bindings.rs")
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OUTPUT_FILE = os.path.join(os.environ["OUT_DIR"], "check_bindings.rs")
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GLUE_FILE = os.path.join(ROOT_PATH, "ports", "geckolib", "glue.rs")
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GLUE_OUTPUT_FILE = os.path.join(os.environ["OUT_DIR"], "glue.rs")
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TEMPLATE = """\
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[ Servo_{name}, bindings::Servo_{name} ];
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"""
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with open(INPUT_FILE, "r") as bindings, open(OUTPUT_FILE, "w+") as tests:
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tests.write("fn assert_types() {\n")
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pattern = re.compile("fn\s*Servo_([a-zA-Z0-9_]+)\s*\(")
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for line in bindings:
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match = pattern.search(line)
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if match:
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tests.write(TEMPLATE.format(name=match.group(1)))
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tests.write("}\n")
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with open(GLUE_FILE, "r") as glue, open(GLUE_OUTPUT_FILE, "w+") as glue_output:
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glue_output.write("pub use style::gecko::arc_types::*;")
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for line in glue:
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glue_output.write(line.replace("pub extern \"C\" fn", "pub unsafe extern \"C\" fn"))
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