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This commit is contained in:
Niko Matsakis 2018-09-28 15:50:34 -04:00
parent 9b4267f7c1
commit 16563b3666
1 changed files with 7 additions and 0 deletions
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7
examples/hello_world/implementation.rs
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@ -15,6 +15,8 @@ pub struct QueryContextImpl {
execution_stack: RefCell<Vec<DynDescriptor>>, execution_stack: RefCell<Vec<DynDescriptor>>,
} }
// This is an example of how you "link up" all the queries in your
// application.
query_context_storage! { query_context_storage! {
struct QueryContextImplStorage for storage in QueryContextImpl { struct QueryContextImplStorage for storage in QueryContextImpl {
impl class_table::ClassTableQueryContext { impl class_table::ClassTableQueryContext {
@ -25,12 +27,17 @@ query_context_storage! {
} }
} }
// This is an example of how you provide custom bits of stuff that
// your queries may need; in this case, an `Interner` value.
impl CompilerQueryContext for QueryContextImpl { impl CompilerQueryContext for QueryContextImpl {
fn interner(&self) -> &Interner { fn interner(&self) -> &Interner {
&self.interner &self.interner
} }
} }
// FIXME: This code... probably should not live here. But maybe we
// just want to provide some helpers or something? I do suspect I want
// people to be able to customize this.
impl BaseQueryContext for QueryContextImpl { impl BaseQueryContext for QueryContextImpl {
type QueryDescriptor = DynDescriptor; type QueryDescriptor = DynDescriptor;