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HIR docs: mention how to resolve method paths #66076

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merged 3 commits into from
Nov 7, 2019
Merged

HIR docs: mention how to resolve method paths #66076

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6515371
QPath docs: mention how to resolve them
RalfJung Nov 4, 2019
151e989
also explain how to resolve MethodCall
RalfJung Nov 4, 2019
f2ed1e6
Fix markdown link
RalfJung Nov 6, 2019
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9 changes: 9 additions & 0 deletions src/librustc/hir/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1616,6 +1616,11 @@ pub enum ExprKind {
/// and the remaining elements are the rest of the arguments.
/// Thus, `x.foo::<Bar, Baz>(a, b, c, d)` is represented as
/// `ExprKind::MethodCall(PathSegment { foo, [Bar, Baz] }, [x, a, b, c, d])`.
///
/// To resolve the called method to a `DefId`, call [`type_dependent_def_id`] with
/// the `hir_id` of the `MethodCall` node itself.
///
/// [`type_dependent_def_id`]: ../ty/struct.TypeckTables.html#method.type_dependent_def_id
MethodCall(P<PathSegment>, Span, HirVec<Expr>),
/// A tuple (e.g., `(a, b, c, d)`).
Tup(HirVec<Expr>),
Expand Down Expand Up @@ -1698,6 +1703,10 @@ pub enum ExprKind {
}

/// Represents an optionally `Self`-qualified value/type path or associated extension.
///
/// To resolve the path to a `DefId`, call [`qpath_res`].
///
/// [`qpath_res`]: ../ty/struct.TypeckTables.html#method.qpath_res
#[derive(RustcEncodable, RustcDecodable, Debug, HashStable)]
pub enum QPath {
/// Path to a definition, optionally "fully-qualified" with a `Self`
Expand Down