Clarify exception on unexpected try() arguments

diff --git a/Changes b/Changes
index 0b1704a..e45b95e 100644 (file)
--- a/Changes
+++ b/Changes
@@ -4,6 +4,7 @@
   - fix (fsvo) broken URLs (RT#55659)
   - proper exception on erroneous usage of bare catch/finally (RT#81070)
   - proper exception on erroneous use of multiple catch{} blocks
+  - clarify exception occuring on unterminated try block (RT#75712)
 
 0.12
   - doc fixes

diff --git a/lib/Try/Tiny.pm b/lib/Try/Tiny.pm
index 3056c4c..f36fe2e 100644 (file)
--- a/lib/Try/Tiny.pm
+++ b/lib/Try/Tiny.pm
@@ -28,18 +28,19 @@ sub try (&;@) {
   # find labeled blocks in the argument list.
   # catch and finally tag the blocks by blessing a scalar reference to them.
   foreach my $code_ref (@code_refs) {
-    next unless $code_ref;
 
-    my $ref = ref($code_ref);
-
-    if ( $ref eq 'Try::Tiny::Catch' ) {
+    if ( ref($code_ref) eq 'Try::Tiny::Catch' ) {
       croak 'A try() may not be followed by multiple catch() blocks'
         if $catch;
       $catch = ${$code_ref};
-    } elsif ( $ref eq 'Try::Tiny::Finally' ) {
+    } elsif ( ref($code_ref) eq 'Try::Tiny::Finally' ) {
       push @finally, ${$code_ref};
     } else {
-      confess("Unknown code ref type given '${ref}'. Check your usage & try again");
+      croak(
+        'try() encountered an unexpected argument ('
+      . ( defined $code_ref ? $code_ref : 'undef' )
+      . ') - perhaps a missing semi-colon before or'
+      );
     }
   }
 

diff --git a/t/erroneous_usage.t b/t/erroneous_usage.t
index c447c61..b64da61 100644 (file)
--- a/t/erroneous_usage.t
+++ b/t/erroneous_usage.t
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 5;
+use Test::More tests => 6;
 use Try::Tiny;
 
 sub _eval {
@@ -46,3 +46,9 @@ throws_ok {
   try { 1 } catch { 2 } catch { 3 } finally { 4 } finally { 5 }
 } qr/\QA try() may not be followed by multiple catch() blocks/, 'Multi-catch detected';
 
+
+throws_ok {
+  try { 1 } catch { 2 }
+  do { 2 }
+} qr/\Qtry() encountered an unexpected argument (2) - perhaps a missing semi-colon before or at/,
+  'Unterminated try detected';