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add example with records

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This commit is contained in:
vms
2020-07-28 01:19:15 +03:00
parent 471da75a9a
commit 0a32104cbc
13 changed files with 271 additions and 41 deletions
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23
engine/src/module/wit_instance.rs
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@ -31,6 +31,7 @@ use std::collections::HashMap;
pub(super) struct WITInstance {
funcs: HashMap<usize, WITFunction>,
memories: Vec<WITMemory>,
record_types: HashMap<u32, WITAstType>,
}
impl WITInstance {
@ -46,7 +47,13 @@ impl WITInstance {
exports.extend(imports);
let funcs = exports;
Ok(Self { funcs, memories })
let record_types = Self::extract_record_types(wit);
Ok(Self {
funcs,
memories,
record_types,
})
}
fn extract_raw_exports(
@ -113,6 +120,16 @@ impl WITInstance {
memories
}
fn extract_record_types(wit: &FCEWITInterfaces<'_>) -> HashMap<u32, WITAstType> {
wit.types()
.enumerate()
.filter_map(|(id, ty)| match ty {
WITAstType::Record(_) => Some((id as u32, ty.clone())),
_ => None,
})
.collect::<HashMap<_, _>>()
}
}
impl wasm::structures::Instance<WITExport, WITFunction, WITMemory, WITMemoryView<'_>>
@ -138,7 +155,7 @@ impl wasm::structures::Instance<WITExport, WITFunction, WITMemory, WITMemoryView
}
}
fn wit_type(&self, _index: u32) -> Option<&WITAstType> {
None
fn wit_type(&self, index: u32) -> Option<&WITAstType> {
self.record_types.get(&index)
}
}