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Fixes their order to be the same as in the source file
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Original file line number | Diff line number | Diff line change |
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@@ -8,6 +8,7 @@ mod availability; | |
mod config; | ||
mod method; | ||
mod objc2_utils; | ||
mod property; | ||
mod rust_type; | ||
mod stmt; | ||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,173 @@ | ||
use clang::{Entity, EntityKind, EntityVisitResult, Nullability, ObjCAttributes}; | ||
use proc_macro2::TokenStream; | ||
use quote::ToTokens; | ||
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use crate::availability::Availability; | ||
use crate::config::MethodData; | ||
use crate::method::{MemoryManagement, Method, Qualifier}; | ||
use crate::rust_type::{RustType, RustTypeReturn}; | ||
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#[allow(dead_code)] | ||
#[derive(Debug, Clone)] | ||
pub struct Property { | ||
name: String, | ||
getter_name: String, | ||
setter_name: Option<String>, | ||
availability: Availability, | ||
is_class: bool, | ||
is_optional_protocol: bool, | ||
type_in: RustType, | ||
type_out: RustType, | ||
safe: bool, | ||
} | ||
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impl Property { | ||
/// Takes `EntityKind::ObjCPropertyDecl`. | ||
pub fn partial(entity: Entity<'_>) -> PartialProperty<'_> { | ||
let attributes = entity.get_objc_attributes(); | ||
let has_setter = attributes.map(|a| !a.readonly).unwrap_or(true); | ||
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PartialProperty { | ||
entity, | ||
name: entity.get_display_name().expect("property getter name"), | ||
getter_name: entity.get_objc_getter_name().expect("property getter name"), | ||
setter_name: has_setter.then(|| { | ||
entity | ||
.get_objc_setter_name() | ||
.expect("property setter name") | ||
.trim_end_matches(|c| c == ':') | ||
.to_string() | ||
}), | ||
is_class: attributes.map(|a| a.class).unwrap_or(false), | ||
attributes: entity.get_objc_attributes(), | ||
} | ||
} | ||
} | ||
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#[derive(Debug, Clone)] | ||
pub struct PartialProperty<'tu> { | ||
entity: Entity<'tu>, | ||
pub name: String, | ||
pub getter_name: String, | ||
pub setter_name: Option<String>, | ||
pub is_class: bool, | ||
attributes: Option<ObjCAttributes>, | ||
} | ||
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impl PartialProperty<'_> { | ||
pub fn parse(self, data: MethodData) -> Option<Property> { | ||
let Self { | ||
entity, | ||
name, | ||
getter_name, | ||
setter_name, | ||
is_class, | ||
attributes, | ||
} = self; | ||
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||
if data.skipped { | ||
return None; | ||
} | ||
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// println!("Property {getter_name:?}/{setter_name:?}: {attributes:?}"); | ||
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let availability = Availability::parse( | ||
entity | ||
.get_platform_availability() | ||
.expect("method availability"), | ||
); | ||
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// `@property(copy)` for some reason returns nonnull? | ||
// | ||
// Swift signifies that they use forced unwrapping here, perhaps | ||
// because they know that it can fail (e.g. in OOM situations), but | ||
// is very unlikely to? | ||
let default_nullability = if attributes.map(|a| a.copy).unwrap_or(false) { | ||
Nullability::NonNull | ||
} else { | ||
Nullability::Unspecified | ||
}; | ||
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let type_in = RustType::parse_property( | ||
entity.get_type().expect("property type"), | ||
Nullability::Unspecified, | ||
); | ||
let type_out = RustType::parse_property( | ||
entity.get_type().expect("property type"), | ||
default_nullability, | ||
); | ||
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let mut memory_management = MemoryManagement::Normal; | ||
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entity.visit_children(|entity, _parent| { | ||
match entity.get_kind() { | ||
EntityKind::ObjCClassRef | ||
| EntityKind::ObjCProtocolRef | ||
| EntityKind::TypeRef | ||
| EntityKind::ParmDecl => { | ||
// Ignore | ||
} | ||
EntityKind::ObjCReturnsInnerPointer => { | ||
if memory_management != MemoryManagement::Normal { | ||
panic!("got unexpected ObjCReturnsInnerPointer") | ||
} | ||
memory_management = MemoryManagement::ReturnsInnerPointer; | ||
} | ||
EntityKind::ObjCInstanceMethodDecl => { | ||
println!("method in property: {entity:?}"); | ||
} | ||
EntityKind::UnexposedAttr => {} | ||
_ => panic!("Unknown property child: {:?}, {:?}", entity, _parent), | ||
}; | ||
EntityVisitResult::Continue | ||
}); | ||
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let qualifier = entity.get_objc_qualifiers().map(Qualifier::parse); | ||
assert_eq!(qualifier, None, "properties do not support qualifiers"); | ||
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Some(Property { | ||
name, | ||
getter_name, | ||
setter_name, | ||
availability, | ||
is_class, | ||
is_optional_protocol: entity.is_objc_optional(), | ||
type_in, | ||
type_out, | ||
safe: !data.unsafe_, | ||
}) | ||
} | ||
} | ||
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impl ToTokens for Property { | ||
fn to_tokens(&self, tokens: &mut TokenStream) { | ||
let method = Method { | ||
selector: self.getter_name.clone(), | ||
fn_name: self.getter_name.clone(), | ||
availability: self.availability.clone(), | ||
is_class: self.is_class, | ||
is_optional_protocol: self.is_optional_protocol, | ||
memory_management: MemoryManagement::Normal, | ||
designated_initializer: false, | ||
arguments: Vec::new(), | ||
result_type: RustTypeReturn::new(self.type_out.clone()), | ||
safe: self.safe, | ||
}; | ||
method.to_tokens(tokens); | ||
if let Some(setter_name) = &self.setter_name { | ||
let method = Method { | ||
selector: setter_name.clone() + ":", | ||
fn_name: setter_name.clone(), | ||
availability: self.availability.clone(), | ||
is_class: self.is_class, | ||
is_optional_protocol: self.is_optional_protocol, | ||
memory_management: MemoryManagement::Normal, | ||
designated_initializer: false, | ||
arguments: Vec::from([(self.name.clone(), None, self.type_in.clone())]), | ||
result_type: RustTypeReturn::new(RustType::Void), | ||
safe: self.safe, | ||
}; | ||
method.to_tokens(tokens); | ||
} | ||
} | ||
} |
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