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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
/// Defines the accepted types that can be used as
/// parameters and return values in FFI.
#[derive(Clone, Copy, 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,
}
impl From<NativeType> for libffi::middle::Type {
fn from(native_type: NativeType) -> Self {
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()
}
}
}
}
#[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 {}
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