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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/. */
//! Generate foreign language bindings for a uniffi component.
//!
//! This module contains all the code for generating foreign language bindings,
//! along with some helpers for executing foreign language scripts or tests.
use anyhow::{bail, Result};
use camino::Utf8Path;
use serde::{Deserialize, Serialize};
use std::fmt;
use crate::interface::ComponentInterface;
pub mod kotlin;
pub mod python;
pub mod ruby;
pub mod swift;
/// Enumeration of all foreign language targets currently supported by this crate.
///
/// The functions in this module will delegate to a language-specific backend based
/// on the provided `TargetLanguage`. For convenience of calling code we also provide
/// a few `TryFrom` implementations to help guess the correct target language from
/// e.g. a file extension of command-line argument.
#[derive(Copy, Clone, Eq, PartialEq, Hash)]
#[cfg_attr(feature = "clap", derive(clap::ValueEnum))]
pub enum TargetLanguage {
Kotlin,
Swift,
Python,
Ruby,
}
impl fmt::Display for TargetLanguage {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Kotlin => write!(f, "kotlin"),
Self::Swift => write!(f, "swift"),
Self::Python => write!(f, "python"),
Self::Ruby => write!(f, "ruby"),
}
}
}
/// Mode for the `run_script` function defined for each language
#[derive(Clone, Debug)]
pub struct RunScriptOptions {
pub show_compiler_messages: bool,
}
impl Default for RunScriptOptions {
fn default() -> Self {
Self {
show_compiler_messages: true,
}
}
}
impl TryFrom<&str> for TargetLanguage {
type Error = anyhow::Error;
fn try_from(value: &str) -> Result<Self> {
Ok(match value.to_ascii_lowercase().as_str() {
"kotlin" | "kt" | "kts" => TargetLanguage::Kotlin,
"swift" => TargetLanguage::Swift,
"python" | "py" => TargetLanguage::Python,
"ruby" | "rb" => TargetLanguage::Ruby,
_ => bail!("Unknown or unsupported target language: \"{value}\""),
})
}
}
impl TryFrom<&std::ffi::OsStr> for TargetLanguage {
type Error = anyhow::Error;
fn try_from(value: &std::ffi::OsStr) -> Result<Self> {
match value.to_str() {
None => bail!("Unreadable target language"),
Some(s) => s.try_into(),
}
}
}
impl TryFrom<String> for TargetLanguage {
type Error = anyhow::Error;
fn try_from(value: String) -> Result<Self> {
TryFrom::try_from(value.as_str())
}
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
pub struct Config {
#[serde(default)]
pub(crate) kotlin: kotlin::Config,
#[serde(default)]
pub(crate) swift: swift::Config,
#[serde(default)]
pub(crate) python: python::Config,
#[serde(default)]
pub(crate) ruby: ruby::Config,
}
/// Generate foreign language bindings from a compiled `uniffi` library.
pub fn write_bindings(
config: &Config,
ci: &ComponentInterface,
out_dir: &Utf8Path,
language: TargetLanguage,
try_format_code: bool,
) -> Result<()> {
match language {
TargetLanguage::Kotlin => {
kotlin::write_bindings(&config.kotlin, ci, out_dir, try_format_code)?
}
TargetLanguage::Swift => {
swift::write_bindings(&config.swift, ci, out_dir, try_format_code)?
}
TargetLanguage::Python => {
python::write_bindings(&config.python, ci, out_dir, try_format_code)?
}
TargetLanguage::Ruby => ruby::write_bindings(&config.ruby, ci, out_dir, try_format_code)?,
}
Ok(())
}
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