37 lines
755 B
Rust
37 lines
755 B
Rust
// If you are to update this code, make sure you update the example in `wasmi-derive`.
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extern crate wasmi;
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extern crate wasmi_derive;
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use std::fmt;
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use wasmi::HostError;
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use wasmi_derive::derive_externals;
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#[derive(Debug)]
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struct NoInfoError;
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impl HostError for NoInfoError {}
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impl fmt::Display for NoInfoError {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "NoInfoError")
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}
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}
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struct NonStaticExternals<'a> {
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state: &'a mut usize,
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}
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#[derive_externals]
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impl<'a> NonStaticExternals<'a> {
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pub fn hello(&self, a: u32, b: u32) -> u32 {
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a + b
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}
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pub fn increment(&mut self) {
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*self.state += 1;
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}
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pub fn traps(&self) -> Result<(), NoInfoError> {
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Err(NoInfoError)
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}
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}
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