15 lines
535 B
Rust
15 lines
535 B
Rust
use crate::dep_graph::DepContext;
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use crate::query::QueryInfo;
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pub trait Value<Tcx: DepContext>: Sized {
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fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo]) -> Self;
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}
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impl<Tcx: DepContext, T> Value<Tcx> for T {
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default fn from_cycle_error(tcx: Tcx, _: &[QueryInfo]) -> T {
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tcx.sess().abort_if_errors();
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// Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's
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// non-trivial to define it earlier.
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panic!("Value::from_cycle_error called without errors");
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}
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}
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