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Generate impl inside unused associated const

This commit is contained in:
Sergey Pepyakin 2019-01-25 10:52:05 +01:00
parent 6221f50545
commit f578675ba6
1 changed files with 28 additions and 28 deletions
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56
derive/src/codegen.rs
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@ -6,40 +6,40 @@ pub fn codegen(ext_def: &ExtDefinition, to: &mut TokenStream) {
let mut externals = TokenStream::new();
let mut module_resolver = TokenStream::new();
// TODO: Come up with a name.
let mut new_name = "_WASMI_IMPLS_".to_string();
new_name.push_str("NAME".to_string().trim_start_matches("r#"));
let dummy_const = Ident::new(&new_name, Span::call_site());
derive_externals(ext_def, &mut externals);
derive_module_resolver(ext_def, &mut module_resolver);
let (impl_generics, ty_generics, where_clause) = ext_def.generics.split_for_impl();
let ty = &ext_def.ty;
(quote! {
const #dummy_const: () = {
extern crate wasmi as _wasmi;
impl #impl_generics #ty #where_clause {
const __WASMI_DERIVE_IMPL: () = {
extern crate wasmi as _wasmi;
use _wasmi::{
Trap, RuntimeValue, RuntimeArgs, Externals, ValueType, ModuleImportResolver,
Signature, FuncRef, Error, FuncInstance,
derive_support::{
IntoWasmResult,
IntoWasmValue,
},
use _wasmi::{
Trap, RuntimeValue, RuntimeArgs, Externals, ValueType, ModuleImportResolver,
Signature, FuncRef, Error, FuncInstance,
derive_support::{
IntoWasmResult,
IntoWasmValue,
},
};
#[inline(always)]
fn materialize_arg_ty<W: IntoWasmValue>(_w: Option<W>) -> ValueType {
W::VALUE_TYPE
}
#[inline(always)]
fn materialize_ret_type<W: IntoWasmResult>(_w: Option<W>) -> Option<ValueType> {
W::VALUE_TYPE
}
#externals
#module_resolver
};
#[inline(always)]
fn materialize_arg_ty<W: IntoWasmValue>(_w: Option<W>) -> ValueType {
W::VALUE_TYPE
}
#[inline(always)]
fn materialize_ret_type<W: IntoWasmResult>(_w: Option<W>) -> Option<ValueType> {
W::VALUE_TYPE
}
#externals
#module_resolver
};
}
})
.to_tokens(to);
}