From e22df631c4428f8dea4d5784a8a7840d2f84c6be Mon Sep 17 00:00:00 2001
From: Mel <einebeere@gmail.com>
Date: Mon, 22 Aug 2022 23:41:49 +0000
Subject: Generate runtime debug info with source locations

---
 pkg/lang/vm/vm.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'pkg/lang/vm/vm.go')

diff --git a/pkg/lang/vm/vm.go b/pkg/lang/vm/vm.go
index 4d4d5ca..b18e7cb 100644
--- a/pkg/lang/vm/vm.go
+++ b/pkg/lang/vm/vm.go
@@ -121,10 +121,16 @@ func (vm *VM) executeModule(moduleID int) error {
 		vm.advancePC(advance)
 
 		if decision, err := vm.step(code, op); err != nil {
+			loc, ok := code.Debug().PCToLoc(vm.pc())
+			line := loc.Row
+			if !ok {
+				line = -1
+			}
+
 			return Error{
 				Pos:    vm.pos,
 				Module: module.Name(),
-				Line:   code.Debug().PCToLine(vm.pc()),
+				Line:   line,
 				Err:    err,
 			}
 		} else if decision == stepDecisionHalt {
-- 
cgit 1.4.1