tree-wide: Audit panic error messages

These shouldn't happen, but if they do, then let's make it easier to
debug.

1 files changed, 6 insertions, 6 deletions

diff --git a/internal/jsonparse/parse.go b/internal/jsonparse/parse.go
index 7d97be0..73584d9 100644
--- a/internal/jsonparse/parse.go
+++ b/internal/jsonparse/parse.go
@@ -401,7 +401,7 @@ func (par *Parser) PushReadBarrier() {
 	// Sanity checking.
 	par.init()
 	if len(par.stack) == 0 {
-		panic(errors.New("illegal PushReadBarrier call: empty stack"))
+		panic(errors.New("should not happen: illegal PushReadBarrier call: empty stack"))
 	}
 	curState := par.stack[len(par.stack)-1]
 	switch curState {
@@ -415,7 +415,7 @@ func (par *Parser) PushReadBarrier() {
 		RuneTypeNullN:
 		// OK
 	default:
-		panic(fmt.Errorf("illegal PushReadBarrier call: %q", curState))
+		panic(fmt.Errorf("should not happen: illegal PushReadBarrier call: %q", curState))
 	}
 	// Actually push.
 	par.barriers = append(par.barriers, barrier{
@@ -441,7 +441,7 @@ func (par *Parser) PushReadBarrier() {
 func (par *Parser) PushWriteBarrier() {
 	par.init()
 	if len(par.stack) == 0 {
-		panic(errors.New("illegal PushWriteBarrier call: empty stack"))
+		panic(errors.New("should not happen: illegal PushWriteBarrier call: empty stack"))
 	}
 	switch par.stack[len(par.stack)-1] {
 	case runeTypeAny:
@@ -459,14 +459,14 @@ func (par *Parser) PushWriteBarrier() {
 		})
 		par.stack = []RuneType{runeTypeAny}
 	default:
-		panic(fmt.Errorf("illegal PushWriteBarrier call: %q", par.stack[len(par.stack)-1]))
+		panic(fmt.Errorf("should not happen: illegal PushWriteBarrier call: %q", par.stack[len(par.stack)-1]))
 	}
 }
 
 // PopBarrier reverses a call to PushReadBarrier or PushWriteBarrier.
 func (par *Parser) PopBarrier() {
 	if len(par.barriers) == 0 {
-		panic(errors.New("illegal PopBarrier call: empty barrier stack"))
+		panic(errors.New("should not happen: illegal PopBarrier call: empty barrier stack"))
 	}
 	barrier := par.barriers[len(par.barriers)-1]
 	par.barriers = par.barriers[:len(par.barriers)-1]
@@ -828,7 +828,7 @@ func (par *Parser) HandleRune(c rune) (RuneType, error) {
 	case RuneTypeNullL1:
 		return par.expectRune(c, 'l', RuneTypeNullL2, "null", true)
 	default:
-		panic(fmt.Errorf(`invalid stack: "%s"`, par.stackString()))
+		panic(fmt.Errorf(`should not happen: invalid stack: "%s"`, par.stackString()))
 	}
 }