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implement wasm traits for roc_std::RocBox

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Folkert 2023-02-08 15:04:28 +01:00
parent b022175489
commit 625b9c161a
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4 changed files with 27 additions and 4 deletions
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13
crates/compiler/test_gen/src/helpers/from_wasm32_memory.rs
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@ -1,7 +1,7 @@
use roc_error_macros::internal_error;
use roc_gen_wasm::wasm32_sized::Wasm32Sized;
use roc_mono::layout::Builtin;
use roc_std::{RocDec, RocList, RocOrder, RocResult, RocStr, I128, U128};
use roc_std::{RocBox, RocDec, RocList, RocOrder, RocResult, RocStr, I128, U128};
use roc_wasm_module::round_up_to_alignment;
use std::convert::TryInto;
@ -104,6 +104,17 @@ impl<T: FromWasm32Memory + Clone> FromWasm32Memory for RocList<T> {
}
}
impl<T: FromWasm32Memory + Clone> FromWasm32Memory for RocBox<T> {
fn decode(memory: &[u8], offset: u32) -> Self {
let ptr = <u32 as FromWasm32Memory>::decode(memory, offset + 4 * Builtin::WRAPPER_PTR);
debug_assert_ne!(ptr, 0);
let value = <T as FromWasm32Memory>::decode(memory, ptr);
RocBox::new(value)
}
}
impl<T, E> FromWasm32Memory for RocResult<T, E>
where
T: FromWasm32Memory + Wasm32Sized,