cb2a407228
`napi` only supports numbers in 16 and 32-bits. To support Rust numbers with 8 and 16-bits, we can cast them to 32-bits. To convert from 8 and 16-bits to 32-bits, we use their `Into` implementation. To convert from 32-bits to 8 and 16-bits, we use their `TryInto`, we should theorically not fail, but in case of, an `except` message is appended. The code has also been re-indented as it was containing a mix of 2 spaces, 4 spaces and tabs identation.
69 lines
2.2 KiB
Rust
69 lines
2.2 KiB
Rust
use super::{check_status, sys, Result};
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use crate::type_of;
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macro_rules! impl_number_conversions {
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( $( ($name:literal, $t:ty as $st:ty, $get:ident, $create:ident) ,)* ) => {
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$(
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impl $crate::bindgen_prelude::TypeName for $t {
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#[inline(always)]
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fn type_name() -> &'static str {
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$name
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}
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fn value_type() -> crate::ValueType {
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crate::ValueType::Number
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}
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}
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impl $crate::bindgen_prelude::ValidateNapiValue for $t {
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#[inline(always)]
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fn type_of() -> Vec<$crate::ValueType> {
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vec![$crate::ValueType::Number]
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}
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}
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impl $crate::bindgen_prelude::ToNapiValue for $t {
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#[inline(always)]
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unsafe fn to_napi_value(env: $crate::sys::napi_env, val: $t) -> Result<$crate::sys::napi_value> {
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let mut ptr = std::ptr::null_mut();
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let val: $st = val.into();
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check_status!(
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unsafe { sys::$create(env, val, &mut ptr) },
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"Failed to convert rust type `{}` into napi value",
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$name,
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)?;
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Ok(ptr)
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}
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}
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impl $crate::bindgen_prelude::FromNapiValue for $t {
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#[inline(always)]
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unsafe fn from_napi_value(env: $crate::sys::napi_env, napi_val: $crate::sys::napi_value) -> Result<Self> {
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let mut ret = 0 as $st;
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check_status!(
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unsafe { sys::$get(env, napi_val, &mut ret) },
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"Failed to convert napi value {:?} into rust type `{}`",
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type_of!(env, napi_val),
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$name,
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)?;
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Ok(ret.try_into().expect(concat!("Failed to convert ", stringify!($st), " to ", stringify!($t))))
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}
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}
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)*
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};
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}
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impl_number_conversions!(
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("u8", u8 as u32, napi_get_value_uint32, napi_create_uint32),
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("i8", i8 as i32, napi_get_value_int32, napi_create_int32),
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("u16", u16 as u32, napi_get_value_uint32, napi_create_uint32),
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("i16", i16 as i32, napi_get_value_int32, napi_create_int32),
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("u32", u32 as u32, napi_get_value_uint32, napi_create_uint32),
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("i32", i32 as i32, napi_get_value_int32, napi_create_int32),
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("i64", i64 as i64, napi_get_value_int64, napi_create_int64),
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("f64", f64 as f64, napi_get_value_double, napi_create_double),
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);
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