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Allow for arbitrary BindingGenerator (#1991)
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De-couple TargetLanguage from the `generate_external_bindings` calls.
This will allow 3rd-party BindingGenerators to use the methods.

The `try_format_code` boolean had to be punched through (for now) to
keep the API as similar as possible. I think a follow-up action should
be to move the boolean to the Config.
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SalvatoreT authored Mar 22, 2024
1 parent 0a88d94 commit 6b09f11
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Showing 15 changed files with 178 additions and 54 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ uniffi::build_foreign_language_testcases!(
#[cfg(test)]
mod tests {
use uniffi_bindgen::bindings::TargetLanguage;
use uniffi_bindgen::BindingGeneratorDefault;
use uniffi_testing::UniFFITestHelper;

const DOCSTRINGS: &[&str] = &[
Expand Down Expand Up @@ -50,7 +51,10 @@ mod tests {
uniffi_bindgen::library_mode::generate_bindings(
&cdylib_path,
None,
&[language],
&BindingGeneratorDefault {
target_languages: vec![language],
try_format_code: false,
},
None,
&out_dir,
false,
Expand Down
6 changes: 5 additions & 1 deletion fixtures/docstring/tests/test_generated_bindings.rs
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ uniffi::build_foreign_language_testcases!(
mod tests {
use camino::Utf8PathBuf;
use uniffi_bindgen::bindings::TargetLanguage;
use uniffi_bindgen::BindingGeneratorDefault;
use uniffi_testing::UniFFITestHelper;

const DOCSTRINGS: &[&str] = &[
Expand Down Expand Up @@ -48,7 +49,10 @@ mod tests {
uniffi_bindgen::generate_bindings(
&Utf8PathBuf::from("src/docstring.udl"),
None,
vec![language],
BindingGeneratorDefault {
target_languages: vec![language],
try_format_code: false,
},
Some(&out_dir),
None,
None,
Expand Down
4 changes: 2 additions & 2 deletions fixtures/swift-bridging-header-compile/tests/clang.rs
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
use camino::Utf8PathBuf;
use std::process::Command;
use uniffi::TargetLanguage;
use uniffi::SwiftBindingGenerator;
use uniffi_testing::UniFFITestHelper;

#[test]
Expand All @@ -14,7 +14,7 @@ fn clang() -> Result<(), anyhow::Error> {
uniffi::generate_bindings(
&Utf8PathBuf::from("src/swift-bridging-header-compile.udl"),
None,
vec![TargetLanguage::Swift],
SwiftBindingGenerator,
Some(&out_dir),
None,
None,
Expand Down
11 changes: 9 additions & 2 deletions uniffi/src/cli.rs
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
use camino::Utf8PathBuf;
use clap::{Parser, Subcommand};
use uniffi_bindgen::bindings::TargetLanguage;
use uniffi_bindgen::BindingGeneratorDefault;

// Structs to help our cmdline parsing. Note that docstrings below form part
// of the "help" output.
Expand Down Expand Up @@ -102,7 +103,10 @@ pub fn run_main() -> anyhow::Result<()> {
uniffi_bindgen::library_mode::generate_bindings(
&source,
crate_name,
&language,
&BindingGeneratorDefault {
target_languages: language,
try_format_code: !no_format,
},
config.as_deref(),
&out_dir,
!no_format,
Expand All @@ -111,7 +115,10 @@ pub fn run_main() -> anyhow::Result<()> {
uniffi_bindgen::generate_bindings(
&source,
config.as_deref(),
language,
BindingGeneratorDefault {
target_languages: language,
try_format_code: !no_format,
},
out_dir.as_deref(),
lib_file.as_deref(),
crate_name.as_deref(),
Expand Down
7 changes: 5 additions & 2 deletions uniffi/src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,11 @@ pub use uniffi_bindgen::bindings::ruby::run_test as ruby_run_test;
pub use uniffi_bindgen::bindings::swift::run_test as swift_run_test;
#[cfg(feature = "bindgen")]
pub use uniffi_bindgen::{
bindings::TargetLanguage, generate_bindings, generate_component_scaffolding,
generate_component_scaffolding_for_crate, print_repr,
bindings::kotlin::gen_kotlin::KotlinBindingGenerator,
bindings::python::gen_python::PythonBindingGenerator,
bindings::ruby::gen_ruby::RubyBindingGenerator,
bindings::swift::gen_swift::SwiftBindingGenerator, bindings::TargetLanguage, generate_bindings,
generate_component_scaffolding, generate_component_scaffolding_for_crate, print_repr,
};
#[cfg(feature = "build")]
pub use uniffi_build::{generate_scaffolding, generate_scaffolding_for_crate};
Expand Down
28 changes: 26 additions & 2 deletions uniffi_bindgen/src/bindings/kotlin/gen_kotlin/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -7,14 +7,16 @@ use std::cell::RefCell;
use std::collections::{BTreeSet, HashMap, HashSet};
use std::fmt::Debug;

use anyhow::{Context, Result};
use anyhow::{bail, Context, Result};
use askama::Template;
use camino::Utf8Path;
use heck::{ToLowerCamelCase, ToShoutySnakeCase, ToUpperCamelCase};
use serde::{Deserialize, Serialize};

use crate::backend::TemplateExpression;
use crate::bindings::kotlin;
use crate::interface::*;
use crate::BindingsConfig;
use crate::{BindingGenerator, BindingsConfig};

mod callback_interface;
mod compounds;
Expand All @@ -27,6 +29,28 @@ mod primitives;
mod record;
mod variant;

pub struct KotlinBindingGenerator;
impl BindingGenerator for KotlinBindingGenerator {
type Config = Config;

fn write_bindings(
&self,
ci: &ComponentInterface,
config: &Config,
out_dir: &Utf8Path,
try_format_code: bool,
) -> Result<()> {
kotlin::write_bindings(config, ci, out_dir, try_format_code)
}

fn check_library_path(&self, library_path: &Utf8Path, cdylib_name: Option<&str>) -> Result<()> {
if cdylib_name.is_none() {
bail!("Generate bindings for Kotlin requires a cdylib, but {library_path} was given");
}
Ok(())
}
}

trait CodeType: Debug {
/// The language specific label used to reference this type. This will be used in
/// method signatures and property declarations.
Expand Down
11 changes: 6 additions & 5 deletions uniffi_bindgen/src/bindings/kotlin/test.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,8 @@
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 crate::{
bindings::{RunScriptOptions, TargetLanguage},
library_mode::generate_bindings,
};
use crate::bindings::TargetLanguage;
use crate::{bindings::RunScriptOptions, library_mode::generate_bindings, BindingGeneratorDefault};
use anyhow::{bail, Context, Result};
use camino::{Utf8Path, Utf8PathBuf};
use std::env;
Expand Down Expand Up @@ -40,7 +38,10 @@ pub fn run_script(
generate_bindings(
&cdylib_path,
None,
&[TargetLanguage::Kotlin],
&BindingGeneratorDefault {
target_languages: vec![TargetLanguage::Kotlin],
try_format_code: false,
},
None,
&out_dir,
false,
Expand Down
29 changes: 27 additions & 2 deletions uniffi_bindgen/src/bindings/python/gen_python/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,9 @@
* 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 anyhow::{bail, Context, Result};
use askama::Template;
use camino::Utf8Path;
use heck::{ToShoutySnakeCase, ToSnakeCase, ToUpperCamelCase};
use once_cell::sync::Lazy;
use serde::{Deserialize, Serialize};
Expand All @@ -13,8 +14,9 @@ use std::collections::{BTreeSet, HashMap, HashSet};
use std::fmt::Debug;

use crate::backend::TemplateExpression;
use crate::bindings::python;
use crate::interface::*;
use crate::BindingsConfig;
use crate::{BindingGenerator, BindingsConfig};

mod callback_interface;
mod compounds;
Expand All @@ -26,6 +28,29 @@ mod object;
mod primitives;
mod record;

pub struct PythonBindingGenerator;

impl BindingGenerator for PythonBindingGenerator {
type Config = Config;

fn write_bindings(
&self,
ci: &ComponentInterface,
config: &Config,
out_dir: &Utf8Path,
try_format_code: bool,
) -> Result<()> {
python::write_bindings(config, ci, out_dir, try_format_code)
}

fn check_library_path(&self, library_path: &Utf8Path, cdylib_name: Option<&str>) -> Result<()> {
if cdylib_name.is_none() {
bail!("Generate bindings for Python requires a cdylib, but {library_path} was given");
}
Ok(())
}
}

/// A trait tor the implementation.
trait CodeType: Debug {
/// The language specific label used to reference this type. This will be used in
Expand Down
11 changes: 6 additions & 5 deletions uniffi_bindgen/src/bindings/python/test.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,8 @@
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 crate::{
bindings::{RunScriptOptions, TargetLanguage},
library_mode::generate_bindings,
};
use crate::bindings::TargetLanguage;
use crate::{bindings::RunScriptOptions, library_mode::generate_bindings, BindingGeneratorDefault};
use anyhow::{Context, Result};
use camino::Utf8Path;
use std::env;
Expand Down Expand Up @@ -41,7 +39,10 @@ pub fn run_script(
generate_bindings(
&cdylib_path,
None,
&[TargetLanguage::Python],
&BindingGeneratorDefault {
target_languages: vec![TargetLanguage::Python],
try_format_code: false,
},
None,
&out_dir,
false,
Expand Down
28 changes: 26 additions & 2 deletions uniffi_bindgen/src/bindings/ruby/gen_ruby/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,39 @@
* 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::Result;
use anyhow::{bail, Result};
use askama::Template;
use camino::Utf8Path;
use heck::{ToShoutySnakeCase, ToSnakeCase, ToUpperCamelCase};
use serde::{Deserialize, Serialize};
use std::borrow::Borrow;
use std::collections::HashMap;

use crate::bindings::ruby;
use crate::interface::*;
use crate::BindingsConfig;
use crate::{BindingGenerator, BindingsConfig};

pub struct RubyBindingGenerator;
impl BindingGenerator for RubyBindingGenerator {
type Config = Config;

fn write_bindings(
&self,
ci: &ComponentInterface,
config: &Config,
out_dir: &Utf8Path,
try_format_code: bool,
) -> Result<()> {
ruby::write_bindings(config, ci, out_dir, try_format_code)
}

fn check_library_path(&self, library_path: &Utf8Path, cdylib_name: Option<&str>) -> Result<()> {
if cdylib_name.is_none() {
bail!("Generate bindings for Ruby requires a cdylib, but {library_path} was given");
}
Ok(())
}
}

const RESERVED_WORDS: &[&str] = &[
"alias", "and", "BEGIN", "begin", "break", "case", "class", "def", "defined?", "do", "else",
Expand Down
6 changes: 5 additions & 1 deletion uniffi_bindgen/src/bindings/ruby/test.rs
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ License, v. 2.0. If a copy of the MPL was not distributed with this

use crate::bindings::TargetLanguage;
use crate::library_mode::generate_bindings;
use crate::BindingGeneratorDefault;
use anyhow::{bail, Context, Result};
use camino::Utf8Path;
use std::env;
Expand Down Expand Up @@ -37,7 +38,10 @@ pub fn test_script_command(
generate_bindings(
&cdylib_path,
None,
&[TargetLanguage::Ruby],
&BindingGeneratorDefault {
target_languages: vec![TargetLanguage::Ruby],
try_format_code: false,
},
None,
&out_dir,
false,
Expand Down
27 changes: 26 additions & 1 deletion uniffi_bindgen/src/bindings/swift/gen_swift/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -10,13 +10,15 @@ use std::fmt::Debug;

use anyhow::{Context, Result};
use askama::Template;
use camino::Utf8Path;
use heck::{ToLowerCamelCase, ToShoutySnakeCase, ToUpperCamelCase};
use serde::{Deserialize, Serialize};

use super::Bindings;
use crate::backend::TemplateExpression;
use crate::bindings::swift;
use crate::interface::*;
use crate::BindingsConfig;
use crate::{BindingGenerator, BindingsConfig};

mod callback_interface;
mod compounds;
Expand All @@ -28,6 +30,29 @@ mod object;
mod primitives;
mod record;

pub struct SwiftBindingGenerator;
impl BindingGenerator for SwiftBindingGenerator {
type Config = Config;

fn write_bindings(
&self,
ci: &ComponentInterface,
config: &Config,
out_dir: &Utf8Path,
try_format_code: bool,
) -> Result<()> {
swift::write_bindings(config, ci, out_dir, try_format_code)
}

fn check_library_path(
&self,
_library_path: &Utf8Path,
_cdylib_name: Option<&str>,
) -> Result<()> {
Ok(())
}
}

/// A trait tor the implementation.
trait CodeType: Debug {
/// The language specific label used to reference this type. This will be used in
Expand Down
12 changes: 7 additions & 5 deletions uniffi_bindgen/src/bindings/swift/test.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,7 @@
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 crate::{
bindings::{RunScriptOptions, TargetLanguage},
library_mode::generate_bindings,
};
use crate::{bindings::RunScriptOptions, library_mode::generate_bindings, BindingGeneratorDefault};
use anyhow::{bail, Context, Result};
use camino::{Utf8Path, Utf8PathBuf};
use std::env::consts::{DLL_PREFIX, DLL_SUFFIX};
Expand All @@ -15,6 +12,8 @@ use std::io::Write;
use std::process::{Command, Stdio};
use uniffi_testing::UniFFITestHelper;

use crate::bindings::TargetLanguage;

/// Run Swift tests for a UniFFI test fixture
pub fn run_test(tmp_dir: &str, fixture_name: &str, script_file: &str) -> Result<()> {
run_script(
Expand Down Expand Up @@ -129,7 +128,10 @@ impl GeneratedSources {
let sources = generate_bindings(
cdylib_path,
None,
&[TargetLanguage::Swift],
&BindingGeneratorDefault {
target_languages: vec![TargetLanguage::Swift],
try_format_code: false,
},
None,
out_dir,
false,
Expand Down
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