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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 http://mozilla.org/MPL/2.0/. */
use anyhow::{Context, Result};
use askama::Template;
use camino::Utf8PathBuf;
use clap::Parser;
use serde::{Deserialize, Serialize};
use std::collections::{HashMap, HashSet};
use std::fs::File;
use std::io::Write;
use uniffi_bindgen::ComponentInterface;
mod ci_list;
mod render;
use ci_list::{CallbackIds, ComponentUniverse, FunctionIds, ObjectIds};
use render::cpp::CPPScaffoldingTemplate;
use render::js::JSBindingsTemplate;
#[derive(Debug, Parser)]
#[clap(name = "uniffi-bindgen-gecko-js")]
#[clap(version = clap::crate_version!())]
#[clap(about = "JS bindings generator for Rust")]
#[clap(propagate_version = true)]
struct CliArgs {
// This is a really convoluted set of arguments, but we're only expecting to be called by
// `mach_commands.py`
#[clap(long, value_name = "FILE")]
js_dir: Utf8PathBuf,
#[clap(long, value_name = "FILE")]
fixture_js_dir: Utf8PathBuf,
#[clap(long, value_name = "FILE")]
cpp_path: Utf8PathBuf,
#[clap(long, value_name = "FILE")]
fixture_cpp_path: Utf8PathBuf,
}
/// Configuration for all components, read from `uniffi.toml`
type ConfigMap = HashMap<String, Config>;
/// Configuration for a single Component
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
pub struct Config {
crate_name: String,
udl_file: String,
#[serde(default)]
fixture: bool,
#[serde(default)]
receiver_thread: ReceiverThreadConfig,
}
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
struct ReceiverThreadConfig {
#[serde(default)]
default: Option<String>,
#[serde(default)]
main: HashSet<String>,
#[serde(default)]
worker: HashSet<String>,
}
fn render(out_path: Utf8PathBuf, template: impl Template) -> Result<()> {
println!("rendering {}", out_path);
let contents = template.render()?;
let mut f =
File::create(&out_path).context(format!("Failed to create {:?}", out_path.file_name()))?;
write!(f, "{}\n", contents).context(format!("Failed to write to {}", out_path))
}
fn render_cpp(
path: Utf8PathBuf,
prefix: &str,
components: &Vec<(ComponentInterface, Config)>,
function_ids: &FunctionIds,
object_ids: &ObjectIds,
callback_ids: &CallbackIds,
) -> Result<()> {
render(
path,
CPPScaffoldingTemplate {
prefix,
components,
function_ids,
object_ids,
callback_ids,
},
)
}
fn render_js(
out_dir: Utf8PathBuf,
components: &Vec<(ComponentInterface, Config)>,
function_ids: &FunctionIds,
object_ids: &ObjectIds,
callback_ids: &CallbackIds,
) -> Result<()> {
for (ci, config) in components {
let template = JSBindingsTemplate {
ci,
config,
function_ids,
object_ids,
callback_ids,
};
let path = out_dir.join(template.js_module_name());
render(path, template)?;
}
Ok(())
}
pub fn run_main() -> Result<()> {
let args = CliArgs::parse();
let config_map: ConfigMap =
toml::from_str(include_str!("../config.toml")).expect("Error parsing config.toml");
let components = ComponentUniverse::new(config_map)?;
let function_ids = FunctionIds::new(&components);
let object_ids = ObjectIds::new(&components);
let callback_ids = CallbackIds::new(&components);
render_cpp(
args.cpp_path,
"UniFFI",
&components.components,
&function_ids,
&object_ids,
&callback_ids,
)?;
render_cpp(
args.fixture_cpp_path,
"UniFFIFixtures",
&components.fixture_components,
&function_ids,
&object_ids,
&callback_ids,
)?;
render_js(
args.js_dir,
&components.components,
&function_ids,
&object_ids,
&callback_ids,
)?;
render_js(
args.fixture_js_dir,
&components.fixture_components,
&function_ids,
&object_ids,
&callback_ids,
)?;
Ok(())
}
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