diff options
Diffstat (limited to 'third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift')
11 files changed, 1116 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/callback_interface.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/callback_interface.rs new file mode 100644 index 0000000000..5d8b37e0af --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/callback_interface.rs @@ -0,0 +1,26 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct CallbackInterfaceCodeType { + id: String, +} + +impl CallbackInterfaceCodeType { + pub fn new(id: String) -> Self { + Self { id } + } +} + +impl CodeType for CallbackInterfaceCodeType { + fn type_label(&self) -> String { + super::SwiftCodeOracle.class_name(&self.id) + } + + fn canonical_name(&self) -> String { + format!("CallbackInterface{}", self.type_label()) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/compounds.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/compounds.rs new file mode 100644 index 0000000000..8e6dddf3f9 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/compounds.rs @@ -0,0 +1,108 @@ +/* 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 super::CodeType; +use crate::backend::{Literal, Type}; + +#[derive(Debug)] +pub struct OptionalCodeType { + inner: Type, +} + +impl OptionalCodeType { + pub fn new(inner: Type) -> Self { + Self { inner } + } +} + +impl CodeType for OptionalCodeType { + fn type_label(&self) -> String { + format!("{}?", super::SwiftCodeOracle.find(&self.inner).type_label()) + } + + fn canonical_name(&self) -> String { + format!( + "Option{}", + super::SwiftCodeOracle.find(&self.inner).canonical_name() + ) + } + + fn literal(&self, literal: &Literal) -> String { + match literal { + Literal::Null => "nil".into(), + _ => super::SwiftCodeOracle.find(&self.inner).literal(literal), + } + } +} + +#[derive(Debug)] +pub struct SequenceCodeType { + inner: Type, +} + +impl SequenceCodeType { + pub fn new(inner: Type) -> Self { + Self { inner } + } +} + +impl CodeType for SequenceCodeType { + fn type_label(&self) -> String { + format!( + "[{}]", + super::SwiftCodeOracle.find(&self.inner).type_label() + ) + } + + fn canonical_name(&self) -> String { + format!( + "Sequence{}", + super::SwiftCodeOracle.find(&self.inner).canonical_name() + ) + } + + fn literal(&self, literal: &Literal) -> String { + match literal { + Literal::EmptySequence => "[]".into(), + _ => unreachable!(), + } + } +} + +#[derive(Debug)] +pub struct MapCodeType { + key: Type, + value: Type, +} + +impl MapCodeType { + pub fn new(key: Type, value: Type) -> Self { + Self { key, value } + } +} + +impl CodeType for MapCodeType { + fn type_label(&self) -> String { + format!( + "[{}: {}]", + super::SwiftCodeOracle.find(&self.key).type_label(), + super::SwiftCodeOracle.find(&self.value).type_label() + ) + } + + fn canonical_name(&self) -> String { + format!( + "Dictionary{}{}", + super::SwiftCodeOracle.find(&self.key).canonical_name(), + super::SwiftCodeOracle.find(&self.value).canonical_name() + ) + } + + fn literal(&self, literal: &Literal) -> String { + match literal { + Literal::EmptyMap => "[:]".into(), + _ => unreachable!(), + } + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/custom.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/custom.rs new file mode 100644 index 0000000000..f4591b6eb6 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/custom.rs @@ -0,0 +1,26 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct CustomCodeType { + name: String, +} + +impl CustomCodeType { + pub fn new(name: String) -> Self { + CustomCodeType { name } + } +} + +impl CodeType for CustomCodeType { + fn type_label(&self) -> String { + self.name.clone() + } + + fn canonical_name(&self) -> String { + format!("Type{}", self.name) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/enum_.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/enum_.rs new file mode 100644 index 0000000000..14377ed9de --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/enum_.rs @@ -0,0 +1,35 @@ +/* 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 super::CodeType; +use crate::backend::Literal; + +#[derive(Debug)] +pub struct EnumCodeType { + id: String, +} + +impl EnumCodeType { + pub fn new(id: String) -> Self { + Self { id } + } +} + +impl CodeType for EnumCodeType { + fn type_label(&self) -> String { + super::SwiftCodeOracle.class_name(&self.id) + } + + fn canonical_name(&self) -> String { + format!("Type{}", self.id) + } + + fn literal(&self, literal: &Literal) -> String { + if let Literal::Enum(v, _) = literal { + format!(".{}", super::SwiftCodeOracle.enum_variant_name(v)) + } else { + unreachable!(); + } + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/executor.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/executor.rs new file mode 100644 index 0000000000..b488b004cf --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/executor.rs @@ -0,0 +1,23 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct ForeignExecutorCodeType; + +impl CodeType for ForeignExecutorCodeType { + fn type_label(&self) -> String { + // On Swift, we define a struct to represent a ForeignExecutor + "UniFfiForeignExecutor".into() + } + + fn canonical_name(&self) -> String { + "ForeignExecutor".into() + } + + fn initialization_fn(&self) -> Option<String> { + Some("uniffiInitForeignExecutor".into()) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/external.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/external.rs new file mode 100644 index 0000000000..0b6728ba84 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/external.rs @@ -0,0 +1,36 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct ExternalCodeType { + name: String, +} + +impl ExternalCodeType { + pub fn new(name: String) -> Self { + ExternalCodeType { name } + } +} + +impl CodeType for ExternalCodeType { + fn type_label(&self) -> String { + self.name.clone() + } + + fn canonical_name(&self) -> String { + format!("Type{}", self.name) + } + + // lower and lift need to call public function which were generated for + // the original types. + fn lower(&self) -> String { + format!("{}_lower", self.ffi_converter_name()) + } + + fn lift(&self) -> String { + format!("{}_lift", self.ffi_converter_name()) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/miscellany.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/miscellany.rs new file mode 100644 index 0000000000..c45091c80a --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/miscellany.rs @@ -0,0 +1,31 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct TimestampCodeType; + +impl CodeType for TimestampCodeType { + fn type_label(&self) -> String { + "Date".into() + } + + fn canonical_name(&self) -> String { + "Timestamp".into() + } +} + +#[derive(Debug)] +pub struct DurationCodeType; + +impl CodeType for DurationCodeType { + fn type_label(&self) -> String { + "TimeInterval".into() + } + + fn canonical_name(&self) -> String { + "Duration".into() + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/mod.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/mod.rs new file mode 100644 index 0000000000..12db4afc66 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/mod.rs @@ -0,0 +1,688 @@ +/* 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 once_cell::sync::Lazy; +use std::borrow::Borrow; +use std::cell::RefCell; +use std::collections::{BTreeSet, HashMap, HashSet}; +use std::fmt::Debug; + +use anyhow::{Context, Result}; +use askama::Template; +use heck::{ToLowerCamelCase, ToUpperCamelCase}; +use serde::{Deserialize, Serialize}; + +use super::Bindings; +use crate::backend::TemplateExpression; +use crate::interface::*; +use crate::BindingsConfig; + +mod callback_interface; +mod compounds; +mod custom; +mod enum_; +mod executor; +mod external; +mod miscellany; +mod object; +mod primitives; +mod record; + +/// A trait tor the implementation. +trait CodeType: Debug { + /// The language specific label used to reference this type. This will be used in + /// method signatures and property declarations. + fn type_label(&self) -> String; + + /// A representation of this type label that can be used as part of another + /// identifier. e.g. `read_foo()`, or `FooInternals`. + /// + /// This is especially useful when creating specialized objects or methods to deal + /// with this type only. + fn canonical_name(&self) -> String { + self.type_label() + } + + fn literal(&self, _literal: &Literal) -> String { + unimplemented!("Unimplemented for {}", self.type_label()) + } + + /// Name of the FfiConverter + /// + /// This is the object that contains the lower, write, lift, and read methods for this type. + fn ffi_converter_name(&self) -> String { + format!("FfiConverter{}", self.canonical_name()) + } + + // XXX - the below should be removed and replace with the ffi_converter_name reference in the template. + /// An expression for lowering a value into something we can pass over the FFI. + fn lower(&self) -> String { + format!("{}.lower", self.ffi_converter_name()) + } + + /// An expression for writing a value into a byte buffer. + fn write(&self) -> String { + format!("{}.write", self.ffi_converter_name()) + } + + /// An expression for lifting a value from something we received over the FFI. + fn lift(&self) -> String { + format!("{}.lift", self.ffi_converter_name()) + } + + /// An expression for reading a value from a byte buffer. + fn read(&self) -> String { + format!("{}.read", self.ffi_converter_name()) + } + + /// A list of imports that are needed if this type is in use. + /// Classes are imported exactly once. + fn imports(&self) -> Option<Vec<String>> { + None + } + + /// Function to run at startup + fn initialization_fn(&self) -> Option<String> { + None + } +} + +/// From <https://docs.swift.org/swift-book/documentation/the-swift-programming-language/lexicalstructure/#Keywords-and-Punctuation> +static KEYWORDS: Lazy<HashSet<String>> = Lazy::new(|| { + [ + // Keywords used in declarations: + "associatedtype", + "class", + "deinit", + "enum", + "extension", + "fileprivate", + "func", + "import", + "init", + "inout", + "internal", + "let", + "open", + "operator", + "private", + "precedencegroup", + "protocol", + "public", + "rethrows", + "static", + "struct", + "subscript", + "typealias", + "var", + // Keywords used in statements: + "break", + "case", + "catch", + "continue", + "default", + "defer", + "do", + "else", + "fallthrough", + "for", + "guard", + "if", + "in", + "repeat", + "return", + "throw", + "switch", + "where", + "while", + // Keywords used in expressions and types: + "Any", + "as", + "await", + "catch", + "false", + "is", + "nil", + "rethrows", + "self", + "Self", + "super", + "throw", + "throws", + "true", + "try", + ] + .iter() + .map(ToString::to_string) + .collect::<HashSet<_>>() +}); + +/// Quote a name for use in a context where keywords must be quoted +pub fn quote_general_keyword(nm: String) -> String { + if KEYWORDS.contains(&nm) { + format!("`{nm}`") + } else { + nm + } +} + +/// Per <https://docs.swift.org/swift-book/documentation/the-swift-programming-language/lexicalstructure/#Keywords-and-Punctuation> subset of keywords which need quoting in arg context. +static ARG_KEYWORDS: Lazy<HashSet<String>> = Lazy::new(|| { + ["inout", "var", "let"] + .iter() + .map(ToString::to_string) + .collect::<HashSet<_>>() +}); + +/// Quote a name for use in arg context where fewer keywords must be quoted +pub fn quote_arg_keyword(nm: String) -> String { + if ARG_KEYWORDS.contains(&nm) { + format!("`{nm}`") + } else { + nm + } +} + +/// Config options for the caller to customize the generated Swift. +/// +/// Note that this can only be used to control details of the Swift *that do not affect the underlying component*, +/// since the details of the underlying component are entirely determined by the `ComponentInterface`. +#[derive(Debug, Clone, Default, Serialize, Deserialize)] +pub struct Config { + cdylib_name: Option<String>, + module_name: Option<String>, + ffi_module_name: Option<String>, + ffi_module_filename: Option<String>, + generate_module_map: Option<bool>, + omit_argument_labels: Option<bool>, + #[serde(default)] + custom_types: HashMap<String, CustomTypeConfig>, +} + +#[derive(Debug, Default, Clone, Serialize, Deserialize)] +pub struct CustomTypeConfig { + imports: Option<Vec<String>>, + type_name: Option<String>, + into_custom: TemplateExpression, + from_custom: TemplateExpression, +} + +impl Config { + /// The name of the Swift module containing the high-level foreign-language bindings. + pub fn module_name(&self) -> String { + match self.module_name.as_ref() { + Some(name) => name.clone(), + None => "uniffi".into(), + } + } + + /// The name of the lower-level C module containing the FFI declarations. + pub fn ffi_module_name(&self) -> String { + match self.ffi_module_name.as_ref() { + Some(name) => name.clone(), + None => format!("{}FFI", self.module_name()), + } + } + + /// The filename stem for the lower-level C module containing the FFI declarations. + pub fn ffi_module_filename(&self) -> String { + match self.ffi_module_filename.as_ref() { + Some(name) => name.clone(), + None => self.ffi_module_name(), + } + } + + /// The name of the `.modulemap` file for the lower-level C module with FFI declarations. + pub fn modulemap_filename(&self) -> String { + format!("{}.modulemap", self.ffi_module_filename()) + } + + /// The name of the `.h` file for the lower-level C module with FFI declarations. + pub fn header_filename(&self) -> String { + format!("{}.h", self.ffi_module_filename()) + } + + /// The name of the compiled Rust library containing the FFI implementation. + pub fn cdylib_name(&self) -> String { + if let Some(cdylib_name) = &self.cdylib_name { + cdylib_name.clone() + } else { + "uniffi".into() + } + } + + /// Whether to generate a `.modulemap` file for the lower-level C module with FFI declarations. + pub fn generate_module_map(&self) -> bool { + self.generate_module_map.unwrap_or(true) + } + + /// Whether to omit argument labels in Swift function definitions. + pub fn omit_argument_labels(&self) -> bool { + self.omit_argument_labels.unwrap_or(false) + } +} + +impl BindingsConfig for Config { + fn update_from_ci(&mut self, ci: &ComponentInterface) { + self.module_name + .get_or_insert_with(|| ci.namespace().into()); + self.cdylib_name + .get_or_insert_with(|| format!("uniffi_{}", ci.namespace())); + } + + fn update_from_cdylib_name(&mut self, cdylib_name: &str) { + self.cdylib_name + .get_or_insert_with(|| cdylib_name.to_string()); + } + + fn update_from_dependency_configs(&mut self, _config_map: HashMap<&str, &Self>) {} +} + +/// Generate UniFFI component bindings for Swift, as strings in memory. +/// +pub fn generate_bindings(config: &Config, ci: &ComponentInterface) -> Result<Bindings> { + let header = BridgingHeader::new(config, ci) + .render() + .context("failed to render Swift bridging header")?; + let library = SwiftWrapper::new(config.clone(), ci) + .render() + .context("failed to render Swift library")?; + let modulemap = if config.generate_module_map() { + Some( + ModuleMap::new(config, ci) + .render() + .context("failed to render Swift modulemap")?, + ) + } else { + None + }; + Ok(Bindings { + library, + header, + modulemap, + }) +} + +/// Renders Swift helper code for all types +/// +/// This template is a bit different than others in that it stores internal state from the render +/// process. Make sure to only call `render()` once. +#[derive(Template)] +#[template(syntax = "swift", escape = "none", path = "Types.swift")] +pub struct TypeRenderer<'a> { + config: &'a Config, + ci: &'a ComponentInterface, + // Track included modules for the `include_once()` macro + include_once_names: RefCell<HashSet<String>>, + // Track imports added with the `add_import()` macro + imports: RefCell<BTreeSet<String>>, +} + +impl<'a> TypeRenderer<'a> { + fn new(config: &'a Config, ci: &'a ComponentInterface) -> Self { + Self { + config, + ci, + include_once_names: RefCell::new(HashSet::new()), + imports: RefCell::new(BTreeSet::new()), + } + } + + // The following methods are used by the `Types.swift` macros. + + // Helper for the including a template, but only once. + // + // The first time this is called with a name it will return true, indicating that we should + // include the template. Subsequent calls will return false. + fn include_once_check(&self, name: &str) -> bool { + self.include_once_names + .borrow_mut() + .insert(name.to_string()) + } + + // Helper to add an import statement + // + // Call this inside your template to cause an import statement to be added at the top of the + // file. Imports will be sorted and de-deuped. + // + // Returns an empty string so that it can be used inside an askama `{{ }}` block. + fn add_import(&self, name: &str) -> &str { + self.imports.borrow_mut().insert(name.to_owned()); + "" + } +} + +/// Template for generating the `.h` file that defines the low-level C FFI. +/// +/// This file defines only the low-level structs and functions that are exposed +/// by the compiled Rust code. It gets wrapped into a higher-level API by the +/// code from [`SwiftWrapper`]. +#[derive(Template)] +#[template(syntax = "c", escape = "none", path = "BridgingHeaderTemplate.h")] +pub struct BridgingHeader<'config, 'ci> { + _config: &'config Config, + ci: &'ci ComponentInterface, +} + +impl<'config, 'ci> BridgingHeader<'config, 'ci> { + pub fn new(config: &'config Config, ci: &'ci ComponentInterface) -> Self { + Self { + _config: config, + ci, + } + } +} + +/// Template for generating the `.modulemap` file that exposes the low-level C FFI. +/// +/// This file defines how the low-level C FFI from [`BridgingHeader`] gets exposed +/// as a Swift module that can be called by other Swift code. In our case, its only +/// job is to define the *name* of the Swift module that will contain the FFI functions +/// so that it can be imported by the higher-level code in from [`SwiftWrapper`]. +#[derive(Template)] +#[template(syntax = "c", escape = "none", path = "ModuleMapTemplate.modulemap")] +pub struct ModuleMap<'config, 'ci> { + config: &'config Config, + _ci: &'ci ComponentInterface, +} + +impl<'config, 'ci> ModuleMap<'config, 'ci> { + pub fn new(config: &'config Config, _ci: &'ci ComponentInterface) -> Self { + Self { config, _ci } + } +} + +#[derive(Template)] +#[template(syntax = "swift", escape = "none", path = "wrapper.swift")] +pub struct SwiftWrapper<'a> { + config: Config, + ci: &'a ComponentInterface, + type_helper_code: String, + type_imports: BTreeSet<String>, + has_async_fns: bool, +} +impl<'a> SwiftWrapper<'a> { + pub fn new(config: Config, ci: &'a ComponentInterface) -> Self { + let type_renderer = TypeRenderer::new(&config, ci); + let type_helper_code = type_renderer.render().unwrap(); + let type_imports = type_renderer.imports.into_inner(); + Self { + config, + ci, + type_helper_code, + type_imports, + has_async_fns: ci.has_async_fns(), + } + } + + pub fn imports(&self) -> Vec<String> { + self.type_imports.iter().cloned().collect() + } + + pub fn initialization_fns(&self) -> Vec<String> { + self.ci + .iter_types() + .map(|t| SwiftCodeOracle.find(t)) + .filter_map(|ct| ct.initialization_fn()) + .chain( + self.has_async_fns + .then(|| "uniffiInitContinuationCallback".into()), + ) + .collect() + } +} + +#[derive(Clone)] +pub struct SwiftCodeOracle; + +impl SwiftCodeOracle { + // Map `Type` instances to a `Box<dyn CodeType>` for that type. + // + // There is a companion match in `templates/Types.swift` which performs a similar function for the + // template code. + // + // - When adding additional types here, make sure to also add a match arm to the `Types.swift` template. + // - To keep things manageable, let's try to limit ourselves to these 2 mega-matches + fn create_code_type(&self, type_: Type) -> Box<dyn CodeType> { + match type_ { + Type::UInt8 => Box::new(primitives::UInt8CodeType), + Type::Int8 => Box::new(primitives::Int8CodeType), + Type::UInt16 => Box::new(primitives::UInt16CodeType), + Type::Int16 => Box::new(primitives::Int16CodeType), + Type::UInt32 => Box::new(primitives::UInt32CodeType), + Type::Int32 => Box::new(primitives::Int32CodeType), + Type::UInt64 => Box::new(primitives::UInt64CodeType), + Type::Int64 => Box::new(primitives::Int64CodeType), + Type::Float32 => Box::new(primitives::Float32CodeType), + Type::Float64 => Box::new(primitives::Float64CodeType), + Type::Boolean => Box::new(primitives::BooleanCodeType), + Type::String => Box::new(primitives::StringCodeType), + Type::Bytes => Box::new(primitives::BytesCodeType), + + Type::Timestamp => Box::new(miscellany::TimestampCodeType), + Type::Duration => Box::new(miscellany::DurationCodeType), + + Type::Enum { name, .. } => Box::new(enum_::EnumCodeType::new(name)), + Type::Object { name, .. } => Box::new(object::ObjectCodeType::new(name)), + Type::Record { name, .. } => Box::new(record::RecordCodeType::new(name)), + Type::CallbackInterface { name, .. } => { + Box::new(callback_interface::CallbackInterfaceCodeType::new(name)) + } + Type::ForeignExecutor => Box::new(executor::ForeignExecutorCodeType), + Type::Optional { inner_type } => { + Box::new(compounds::OptionalCodeType::new(*inner_type)) + } + Type::Sequence { inner_type } => { + Box::new(compounds::SequenceCodeType::new(*inner_type)) + } + Type::Map { + key_type, + value_type, + } => Box::new(compounds::MapCodeType::new(*key_type, *value_type)), + Type::External { name, .. } => Box::new(external::ExternalCodeType::new(name)), + Type::Custom { name, .. } => Box::new(custom::CustomCodeType::new(name)), + } + } + + fn find(&self, type_: &Type) -> Box<dyn CodeType> { + self.create_code_type(type_.clone()) + } + + /// Get the idiomatic Swift rendering of a class name (for enums, records, errors, etc). + fn class_name(&self, nm: &str) -> String { + nm.to_string().to_upper_camel_case() + } + + /// Get the idiomatic Swift rendering of a function name. + fn fn_name(&self, nm: &str) -> String { + nm.to_string().to_lower_camel_case() + } + + /// Get the idiomatic Swift rendering of a variable name. + fn var_name(&self, nm: &str) -> String { + nm.to_string().to_lower_camel_case() + } + + /// Get the idiomatic Swift rendering of an individual enum variant. + fn enum_variant_name(&self, nm: &str) -> String { + nm.to_string().to_lower_camel_case() + } + + fn ffi_type_label_raw(&self, ffi_type: &FfiType) -> String { + match ffi_type { + FfiType::Int8 => "Int8".into(), + FfiType::UInt8 => "UInt8".into(), + FfiType::Int16 => "Int16".into(), + FfiType::UInt16 => "UInt16".into(), + FfiType::Int32 => "Int32".into(), + FfiType::UInt32 => "UInt32".into(), + FfiType::Int64 => "Int64".into(), + FfiType::UInt64 => "UInt64".into(), + FfiType::Float32 => "Float".into(), + FfiType::Float64 => "Double".into(), + FfiType::RustArcPtr(_) => "UnsafeMutableRawPointer".into(), + FfiType::RustBuffer(_) => "RustBuffer".into(), + FfiType::ForeignBytes => "ForeignBytes".into(), + FfiType::ForeignCallback => "ForeignCallback".into(), + FfiType::ForeignExecutorHandle => "Int".into(), + FfiType::ForeignExecutorCallback => "ForeignExecutorCallback".into(), + FfiType::RustFutureContinuationCallback => "UniFfiRustFutureContinuation".into(), + FfiType::RustFutureHandle | FfiType::RustFutureContinuationData => { + "UnsafeMutableRawPointer".into() + } + } + } + + fn ffi_type_label(&self, ffi_type: &FfiType) -> String { + match ffi_type { + FfiType::ForeignCallback + | FfiType::ForeignExecutorCallback + | FfiType::RustFutureHandle + | FfiType::RustFutureContinuationCallback + | FfiType::RustFutureContinuationData => { + format!("{} _Nonnull", self.ffi_type_label_raw(ffi_type)) + } + _ => self.ffi_type_label_raw(ffi_type), + } + } + + fn ffi_canonical_name(&self, ffi_type: &FfiType) -> String { + self.ffi_type_label_raw(ffi_type) + } +} + +pub mod filters { + use super::*; + pub use crate::backend::filters::*; + + fn oracle() -> &'static SwiftCodeOracle { + &SwiftCodeOracle + } + + pub fn type_name(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).type_label()) + } + + pub fn canonical_name(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).canonical_name()) + } + + pub fn ffi_converter_name(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).ffi_converter_name()) + } + + pub fn lower_fn(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).lower()) + } + + pub fn write_fn(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).write()) + } + + pub fn lift_fn(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).lift()) + } + + pub fn read_fn(as_type: &impl AsType) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).read()) + } + + pub fn literal_swift( + literal: &Literal, + as_type: &impl AsType, + ) -> Result<String, askama::Error> { + Ok(oracle().find(&as_type.as_type()).literal(literal)) + } + + /// Get the Swift type for an FFIType + pub fn ffi_type_name(ffi_type: &FfiType) -> Result<String, askama::Error> { + Ok(oracle().ffi_type_label(ffi_type)) + } + + pub fn ffi_canonical_name(ffi_type: &FfiType) -> Result<String, askama::Error> { + Ok(oracle().ffi_canonical_name(ffi_type)) + } + + /// Like `ffi_type_name`, but used in `BridgingHeaderTemplate.h` which uses a slightly different + /// names. + pub fn header_ffi_type_name(ffi_type: &FfiType) -> Result<String, askama::Error> { + Ok(match ffi_type { + FfiType::Int8 => "int8_t".into(), + FfiType::UInt8 => "uint8_t".into(), + FfiType::Int16 => "int16_t".into(), + FfiType::UInt16 => "uint16_t".into(), + FfiType::Int32 => "int32_t".into(), + FfiType::UInt32 => "uint32_t".into(), + FfiType::Int64 => "int64_t".into(), + FfiType::UInt64 => "uint64_t".into(), + FfiType::Float32 => "float".into(), + FfiType::Float64 => "double".into(), + FfiType::RustArcPtr(_) => "void*_Nonnull".into(), + FfiType::RustBuffer(_) => "RustBuffer".into(), + FfiType::ForeignBytes => "ForeignBytes".into(), + FfiType::ForeignCallback => "ForeignCallback _Nonnull".into(), + FfiType::ForeignExecutorCallback => "UniFfiForeignExecutorCallback _Nonnull".into(), + FfiType::ForeignExecutorHandle => "size_t".into(), + FfiType::RustFutureContinuationCallback => { + "UniFfiRustFutureContinuation _Nonnull".into() + } + FfiType::RustFutureHandle | FfiType::RustFutureContinuationData => { + "void* _Nonnull".into() + } + }) + } + + /// Get the idiomatic Swift rendering of a class name (for enums, records, errors, etc). + pub fn class_name(nm: &str) -> Result<String, askama::Error> { + Ok(oracle().class_name(nm)) + } + + /// Get the idiomatic Swift rendering of a function name. + pub fn fn_name(nm: &str) -> Result<String, askama::Error> { + Ok(quote_general_keyword(oracle().fn_name(nm))) + } + + /// Get the idiomatic Swift rendering of a variable name. + pub fn var_name(nm: &str) -> Result<String, askama::Error> { + Ok(quote_general_keyword(oracle().var_name(nm))) + } + + /// Get the idiomatic Swift rendering of an arguments name. + /// This is the same as the var name but quoting is not required. + pub fn arg_name(nm: &str) -> Result<String, askama::Error> { + Ok(quote_arg_keyword(oracle().var_name(nm))) + } + + /// Get the idiomatic Swift rendering of an individual enum variant, quoted if it is a keyword (for use in e.g. declarations) + pub fn enum_variant_swift_quoted(nm: &str) -> Result<String, askama::Error> { + Ok(quote_general_keyword(oracle().enum_variant_name(nm))) + } + + /// Get the idiomatic Swift rendering of an individual enum variant, for contexts (for use in non-declaration contexts where quoting is not needed) + pub fn enum_variant_swift(nm: &str) -> Result<String, askama::Error> { + Ok(oracle().enum_variant_name(nm)) + } + + pub fn error_handler(result: &ResultType) -> Result<String, askama::Error> { + Ok(match &result.throws_type { + Some(t) => format!("{}.lift", ffi_converter_name(t)?), + None => "nil".into(), + }) + } + + /// Name of the callback function to handle an async result + pub fn future_callback(result: &ResultType) -> Result<String, askama::Error> { + Ok(format!( + "uniffiFutureCallbackHandler{}{}", + match &result.return_type { + Some(t) => SwiftCodeOracle.find(t).canonical_name(), + None => "Void".into(), + }, + match &result.throws_type { + Some(t) => SwiftCodeOracle.find(t).canonical_name(), + None => "".into(), + } + )) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/object.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/object.rs new file mode 100644 index 0000000000..ea140c998d --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/object.rs @@ -0,0 +1,26 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct ObjectCodeType { + id: String, +} + +impl ObjectCodeType { + pub fn new(id: String) -> Self { + Self { id } + } +} + +impl CodeType for ObjectCodeType { + fn type_label(&self) -> String { + super::SwiftCodeOracle.class_name(&self.id) + } + + fn canonical_name(&self) -> String { + format!("Type{}", self.id) + } +} diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs new file mode 100644 index 0000000000..86424658a3 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/primitives.rs @@ -0,0 +1,91 @@ +/* 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 super::CodeType; +use crate::backend::Literal; +use crate::interface::{Radix, Type}; +use paste::paste; + +fn render_literal(literal: &Literal) -> String { + fn typed_number(type_: &Type, num_str: String) -> String { + match type_ { + // special case Int32. + Type::Int32 => num_str, + // otherwise use constructor e.g. UInt8(x) + Type::Int8 + | Type::UInt8 + | Type::Int16 + | Type::UInt16 + | Type::UInt32 + | Type::Int64 + | Type::UInt64 + | Type::Float32 + | Type::Float64 => + // XXX we should pass in the codetype itself. + { + format!( + "{}({num_str})", + super::SwiftCodeOracle.find(type_).type_label() + ) + } + _ => panic!("Unexpected literal: {num_str} is not a number"), + } + } + + match literal { + Literal::Boolean(v) => format!("{v}"), + Literal::String(s) => format!("\"{s}\""), + Literal::Int(i, radix, type_) => typed_number( + type_, + match radix { + Radix::Octal => format!("0o{i:o}"), + Radix::Decimal => format!("{i}"), + Radix::Hexadecimal => format!("{i:#x}"), + }, + ), + Literal::UInt(i, radix, type_) => typed_number( + type_, + match radix { + Radix::Octal => format!("0o{i:o}"), + Radix::Decimal => format!("{i}"), + Radix::Hexadecimal => format!("{i:#x}"), + }, + ), + Literal::Float(string, type_) => typed_number(type_, string.clone()), + _ => unreachable!("Literal"), + } +} + +macro_rules! impl_code_type_for_primitive { + ($T:ty, $class_name:literal) => { + paste! { + #[derive(Debug)] + pub struct $T; + + impl CodeType for $T { + fn type_label(&self) -> String { + $class_name.into() + } + + fn literal(&self, literal: &Literal) -> String { + render_literal(&literal) + } + } + } + }; +} + +impl_code_type_for_primitive!(BooleanCodeType, "Bool"); +impl_code_type_for_primitive!(StringCodeType, "String"); +impl_code_type_for_primitive!(BytesCodeType, "Data"); +impl_code_type_for_primitive!(Int8CodeType, "Int8"); +impl_code_type_for_primitive!(Int16CodeType, "Int16"); +impl_code_type_for_primitive!(Int32CodeType, "Int32"); +impl_code_type_for_primitive!(Int64CodeType, "Int64"); +impl_code_type_for_primitive!(UInt8CodeType, "UInt8"); +impl_code_type_for_primitive!(UInt16CodeType, "UInt16"); +impl_code_type_for_primitive!(UInt32CodeType, "UInt32"); +impl_code_type_for_primitive!(UInt64CodeType, "UInt64"); +impl_code_type_for_primitive!(Float32CodeType, "Float"); +impl_code_type_for_primitive!(Float64CodeType, "Double"); diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/record.rs b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/record.rs new file mode 100644 index 0000000000..401109011f --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/gen_swift/record.rs @@ -0,0 +1,26 @@ +/* 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 super::CodeType; + +#[derive(Debug)] +pub struct RecordCodeType { + id: String, +} + +impl RecordCodeType { + pub fn new(id: String) -> Self { + Self { id } + } +} + +impl CodeType for RecordCodeType { + fn type_label(&self) -> String { + super::SwiftCodeOracle.class_name(&self.id) + } + + fn canonical_name(&self) -> String { + format!("Type{}", self.id) + } +} |