mirror of
https://github.com/fluencelabs/wasmer
synced 2025-05-25 08:21:20 +00:00
31 lines
677 B
Rust
31 lines
677 B
Rust
use std::mem;
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use wasmer_runtime_core::{
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types::{Type, WasmExternType},
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vm::Ctx,
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};
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#[repr(transparent)]
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#[derive(Copy, Clone)]
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pub struct VarArgs {
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pub pointer: u32, // assuming 32bit wasm
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}
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impl VarArgs {
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pub fn get<T: Sized>(&mut self, ctx: &mut Ctx) -> T {
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let ptr = emscripten_memory_pointer!(ctx.memory(0), self.pointer);
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self.pointer += mem::size_of::<T>() as u32;
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unsafe { (ptr as *const T).read() }
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}
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}
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unsafe impl WasmExternType for VarArgs {
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const TYPE: Type = Type::I32;
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fn to_bits(self) -> u64 {
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self.pointer as u64
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}
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fn from_bits(n: u64) -> Self {
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Self { pointer: n as u32 }
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}
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}
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