mirror of
https://github.com/denoland/deno.git
synced 2024-11-23 15:16:54 -05:00
5928925541
This patch makes `NativeType` to `libffi::middle::Type` conversion failliable and w.t disallows struct with empty fields. libffi does not handle "empty" struct because they don't exist in C (or Rust). Fixes #17481
80 lines
2.3 KiB
Rust
80 lines
2.3 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_core::error::type_error;
|
|
use deno_core::error::AnyError;
|
|
|
|
/// Defines the accepted types that can be used as
|
|
/// parameters and return values in FFI.
|
|
#[derive(Clone, Debug, serde::Deserialize, Eq, PartialEq)]
|
|
#[serde(rename_all = "lowercase")]
|
|
pub enum NativeType {
|
|
Void,
|
|
Bool,
|
|
U8,
|
|
I8,
|
|
U16,
|
|
I16,
|
|
U32,
|
|
I32,
|
|
U64,
|
|
I64,
|
|
USize,
|
|
ISize,
|
|
F32,
|
|
F64,
|
|
Pointer,
|
|
Buffer,
|
|
Function,
|
|
Struct(Box<[NativeType]>),
|
|
}
|
|
|
|
impl TryFrom<NativeType> for libffi::middle::Type {
|
|
type Error = AnyError;
|
|
|
|
fn try_from(native_type: NativeType) -> Result<Self, Self::Error> {
|
|
Ok(match native_type {
|
|
NativeType::Void => libffi::middle::Type::void(),
|
|
NativeType::U8 | NativeType::Bool => libffi::middle::Type::u8(),
|
|
NativeType::I8 => libffi::middle::Type::i8(),
|
|
NativeType::U16 => libffi::middle::Type::u16(),
|
|
NativeType::I16 => libffi::middle::Type::i16(),
|
|
NativeType::U32 => libffi::middle::Type::u32(),
|
|
NativeType::I32 => libffi::middle::Type::i32(),
|
|
NativeType::U64 => libffi::middle::Type::u64(),
|
|
NativeType::I64 => libffi::middle::Type::i64(),
|
|
NativeType::USize => libffi::middle::Type::usize(),
|
|
NativeType::ISize => libffi::middle::Type::isize(),
|
|
NativeType::F32 => libffi::middle::Type::f32(),
|
|
NativeType::F64 => libffi::middle::Type::f64(),
|
|
NativeType::Pointer | NativeType::Buffer | NativeType::Function => {
|
|
libffi::middle::Type::pointer()
|
|
}
|
|
NativeType::Struct(fields) => {
|
|
libffi::middle::Type::structure(match fields.len() > 0 {
|
|
true => fields
|
|
.iter()
|
|
.map(|field| field.clone().try_into())
|
|
.collect::<Result<Vec<_>, _>>()?,
|
|
false => {
|
|
return Err(type_error("Struct must have at least one field"))
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
pub struct Symbol {
|
|
pub cif: libffi::middle::Cif,
|
|
pub ptr: libffi::middle::CodePtr,
|
|
pub parameter_types: Vec<NativeType>,
|
|
pub result_type: NativeType,
|
|
pub can_callback: bool,
|
|
}
|
|
|
|
#[allow(clippy::non_send_fields_in_send_ty)]
|
|
// SAFETY: unsafe trait must have unsafe implementation
|
|
unsafe impl Send for Symbol {}
|
|
// SAFETY: unsafe trait must have unsafe implementation
|
|
unsafe impl Sync for Symbol {}
|