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diff --git a/third_party/rust/uniffi_bindgen/src/bindings/mod.rs b/third_party/rust/uniffi_bindgen/src/bindings/mod.rs
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+++ b/third_party/rust/uniffi_bindgen/src/bindings/mod.rs
@@ -0,0 +1,121 @@
+/* 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 crate::interface::ComponentInterface;
+use crate::MergeWith;
+
+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)]
+pub enum TargetLanguage {
+    Kotlin,
+    Swift,
+    Python,
+    Ruby,
+}
+
+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)]
+    kotlin: kotlin::Config,
+    #[serde(default)]
+    swift: swift::Config,
+    #[serde(default)]
+    python: python::Config,
+    #[serde(default)]
+    ruby: ruby::Config,
+}
+
+impl From<&ComponentInterface> for Config {
+    fn from(ci: &ComponentInterface) -> Self {
+        Config {
+            kotlin: ci.into(),
+            swift: ci.into(),
+            python: ci.into(),
+            ruby: ci.into(),
+        }
+    }
+}
+
+impl MergeWith for Config {
+    fn merge_with(&self, other: &Self) -> Self {
+        Config {
+            kotlin: self.kotlin.merge_with(&other.kotlin),
+            swift: self.swift.merge_with(&other.swift),
+            python: self.python.merge_with(&other.python),
+            ruby: self.ruby.merge_with(&other.ruby),
+        }
+    }
+}
+
+/// 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(())
+}