mirror of
https://github.com/denoland/deno.git
synced 2025-03-05 18:37:20 -05:00
6206343b54
Now that ArrayBuffer/ArrayBufferView is a generic Value type, we have to
handle it being passed any value. To do this, thread
FastApiCallbackOptions through the function, and add error raising
logic.
If we run conversion and the value is not valid, we return `isize::MAX`,
and then in cranelift we use this value to know that we should branch to
the error logic.
An example compilation looks like this:
```rust
extern "C" fn print_buffer(ptr: *const u8, len: usize);
```
```clif
function %print_buffer_wrapper(i64, i64, i64, i64) system_v {
sig0 = (i64, i64) system_v
sig1 = (i64) -> i64 system_v
sig2 = (i64) system_v
block0(v0: i64, v1: i64, v2: i64, v3: i64):
v4 = iconst.i64 0x6525_9198_2d00 ; turbocall_ab_contents
v5 = call_indirect sig1, v4(v1)
v6 = iconst.i64 0x7fff_ffff_ffff_ffff
v7 = icmp eq v5, v6
brif v7, block1, block2
block2:
v8 = iconst.i64 0x7558_4c0c_0700 ; sym.ptr
call_indirect sig0, v8(v5, v2)
return
block1 cold:
v9 = iconst.i64 0x6525_9198_2d70 ; turbocall_raise
call_indirect sig2, v9(v3)
return
}
```
Also cleaned up all the `unwrap`s and added some logging.
81 lines
2.3 KiB
Rust
81 lines
2.3 KiB
Rust
// Copyright 2018-2025 the Deno authors. MIT license.
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use deno_error::JsErrorBox;
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/// Defines the accepted types that can be used as
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/// parameters and return values in FFI.
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#[derive(Clone, Debug, serde::Deserialize, Eq, PartialEq)]
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#[serde(rename_all = "lowercase")]
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pub enum NativeType {
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Void,
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Bool,
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U8,
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I8,
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U16,
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I16,
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U32,
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I32,
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U64,
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I64,
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USize,
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ISize,
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F32,
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F64,
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Pointer,
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Buffer,
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Function,
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Struct(Box<[NativeType]>),
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}
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impl TryFrom<NativeType> for libffi::middle::Type {
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type Error = JsErrorBox;
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fn try_from(native_type: NativeType) -> Result<Self, Self::Error> {
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Ok(match native_type {
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NativeType::Void => libffi::middle::Type::void(),
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NativeType::U8 | NativeType::Bool => libffi::middle::Type::u8(),
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NativeType::I8 => libffi::middle::Type::i8(),
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NativeType::U16 => libffi::middle::Type::u16(),
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NativeType::I16 => libffi::middle::Type::i16(),
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NativeType::U32 => libffi::middle::Type::u32(),
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NativeType::I32 => libffi::middle::Type::i32(),
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NativeType::U64 => libffi::middle::Type::u64(),
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NativeType::I64 => libffi::middle::Type::i64(),
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NativeType::USize => libffi::middle::Type::usize(),
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NativeType::ISize => libffi::middle::Type::isize(),
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NativeType::F32 => libffi::middle::Type::f32(),
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NativeType::F64 => libffi::middle::Type::f64(),
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NativeType::Pointer | NativeType::Buffer | NativeType::Function => {
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libffi::middle::Type::pointer()
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}
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NativeType::Struct(fields) => {
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libffi::middle::Type::structure(match fields.len() > 0 {
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true => fields
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.iter()
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.map(|field| field.clone().try_into())
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.collect::<Result<Vec<_>, _>>()?,
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false => {
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return Err(JsErrorBox::type_error(
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"Struct must have at least one field",
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))
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}
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})
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}
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})
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}
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}
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#[derive(Clone)]
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pub struct Symbol {
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pub name: String,
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pub cif: libffi::middle::Cif,
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pub ptr: libffi::middle::CodePtr,
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pub parameter_types: Vec<NativeType>,
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pub result_type: NativeType,
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}
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#[allow(clippy::non_send_fields_in_send_ty)]
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// SAFETY: unsafe trait must have unsafe implementation
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unsafe impl Send for Symbol {}
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// SAFETY: unsafe trait must have unsafe implementation
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unsafe impl Sync for Symbol {}
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