diff --git a/crates/hir_ty/src/traits.rs b/crates/hir_ty/src/traits.rs index 14cd3a2b446..ce1174cbef5 100644 --- a/crates/hir_ty/src/traits.rs +++ b/crates/hir_ty/src/traits.rs @@ -5,6 +5,7 @@ use base_db::CrateId; use chalk_ir::cast::Cast; use chalk_solve::{logging_db::LoggingRustIrDatabase, Solver}; use hir_def::{lang_item::LangItemTarget, TraitId}; +use stdx::panic_context; use crate::{db::HirDatabase, DebruijnIndex, Substs}; @@ -168,14 +169,23 @@ fn solve( }; let mut solve = || { - if is_chalk_print() { - let logging_db = LoggingRustIrDatabase::new(context); - let solution = solver.solve_limited(&logging_db, goal, &should_continue); - log::debug!("chalk program:\n{}", logging_db); + let _ctx = if is_chalk_debug() || is_chalk_print() { + Some(panic_context::enter(format!("solving {:?}", goal))) + } else { + None + }; + let solution = if is_chalk_print() { + let logging_db = + LoggingRustIrDatabaseLoggingOnDrop(LoggingRustIrDatabase::new(context)); + let solution = solver.solve_limited(&logging_db.0, goal, &should_continue); solution } else { solver.solve_limited(&context, goal, &should_continue) - } + }; + + log::debug!("solve({:?}) => {:?}", goal, solution); + + solution }; // don't set the TLS for Chalk unless Chalk debugging is active, to make @@ -183,11 +193,17 @@ fn solve( let solution = if is_chalk_debug() { chalk::tls::set_current_program(db, solve) } else { solve() }; - log::debug!("solve({:?}) => {:?}", goal, solution); - solution } +struct LoggingRustIrDatabaseLoggingOnDrop<'a>(LoggingRustIrDatabase>); + +impl<'a> Drop for LoggingRustIrDatabaseLoggingOnDrop<'a> { + fn drop(&mut self) { + eprintln!("chalk program:\n{}", self.0); + } +} + fn is_chalk_debug() -> bool { std::env::var("CHALK_DEBUG").is_ok() }