Remove QueryCtxt and trait HasDepContext#152704
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Zalathar wants to merge 3 commits intorust-lang:mainfrom
Open
Remove QueryCtxt and trait HasDepContext#152704Zalathar wants to merge 3 commits intorust-lang:mainfrom
QueryCtxt and trait HasDepContext#152704Zalathar wants to merge 3 commits intorust-lang:mainfrom
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This struct was only wrapping `TyCtxt` in order to implement traits that were removed by RUST-152636.
The need for a `HasDepContext` impl on tuples can be avoided by passing the query vtable as part of an argument tuple instead.
rustbot
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A-query-system
Zoxc
reviewed
Feb 16, 2026
| self.assert_dep_node_not_yet_allocated_in_current_session(tcx.sess, &dep_node, || { | ||
| format!( | ||
| "forcing query with already existing `DepNode`\n\ | ||
| - query-key: {task_arg:?}\n\ |
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This won't just print the query key now.
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It will print a tuple of (query_name, key), which seems fine.
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rustc_query_system#152703 to reduce conflicts.With the
QueryContexttrait removed, wrapper structQueryCtxtno longer serves a purpose and can be replaced withTyCtxteverywhere.After that, the only obstacle to removing trait
HasDepContextisDepGraph::with_task, which uses the trait to allow passing both aTyCtxtand a query vtable through the context argument. But we can achieve the same result by passing the vtable through the other argument instead, in a tuple alongside the query key.r? nnethercote