Hard-code op name in ck_exists|delete errors

The reason is manifold:
• ck_exists and ck_delete are each only ever called with one op type,
  so we can hard-code the op, which takes less code.
• The messages in perldiag are more helpful if they include
  the op name.
• Changing them in op.c too avoids the need for
  diag_listed_as clutter.

(I know, two of these are not listed in perldiag yet.  I’m get-
ting to that.)

diff --git a/op.c b/op.c
index aa6c50d..771c105 100644 (file)
--- a/op.c
+++ b/op.c
@@ -8309,14 +8309,14 @@ Perl_ck_delete(pTHX_ OP *o)
        case OP_HELEM:
            break;
        case OP_KVASLICE:
-           Perl_croak(aTHX_ "%s argument is index/value array slice, use array slice",
-                 OP_DESC(o));
+           Perl_croak(aTHX_ "delete argument is index/value array slice,"
+                            " use array slice");
        case OP_KVHSLICE:
-           Perl_croak(aTHX_ "%s argument is key/value hash slice, use hash slice",
-                 OP_DESC(o));
+           Perl_croak(aTHX_ "delete argument is key/value hash slice, use"
+                            " hash slice");
        default:
-           Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or slice",
-                 OP_DESC(o));
+           Perl_croak(aTHX_ "delete argument is not a HASH or ARRAY "
+                            "element or slice");
        }
        if (kid->op_private & OPpLVAL_INTRO)
            o->op_private |= OPpLVAL_INTRO;
@@ -8480,15 +8480,15 @@ Perl_ck_exists(pTHX_ OP *o)
            (void) ref(kid, o->op_type);
            if (kid->op_type != OP_RV2CV
                        && !(PL_parser && PL_parser->error_count))
-               Perl_croak(aTHX_ "%s argument is not a subroutine name",
-                           OP_DESC(o));
+               Perl_croak(aTHX_
+                         "exists argument is not a subroutine name");
            o->op_private |= OPpEXISTS_SUB;
        }
        else if (kid->op_type == OP_AELEM)
            o->op_flags |= OPf_SPECIAL;
        else if (kid->op_type != OP_HELEM)
-           Perl_croak(aTHX_ "%s argument is not a HASH or ARRAY element or a subroutine",
-                       OP_DESC(o));
+           Perl_croak(aTHX_ "exists argument is not a HASH or ARRAY "
+                            "element or a subroutine");
        op_null(kid);
     }
     return o;

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index 5838a79..d560d98 100644 (file)
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -170,34 +170,6 @@ alternatives.
 
 (F) msgsnd() requires a string at least as long as sizeof(long).
 
-=item %s argument is not a HASH or ARRAY element or a subroutine
-
-(F) The argument to exists() must be a hash or array element or a
-subroutine with an ampersand, such as:
-
-    $foo{$bar}
-    $ref->{"susie"}[12]
-    &do_something
-
-=item %s argument is not a HASH or ARRAY element or slice
-
-(F) The argument to delete() must be either a hash or array element,
-such as:
-
-    $foo{$bar}
-    $ref->{"susie"}[12]
-
-or a hash or array slice, such as:
-
-    @foo[$bar, $baz, $xyzzy]
-    @{$ref->[12]}{"susie", "queue"}
-
-=item %s argument is not a subroutine name
-
-(F) The argument to exists() for C<exists &sub> must be a subroutine
-name, and not a subroutine call.  C<exists &sub()> will generate this
-error.
-
 =item Argument "%s" isn't numeric%s
 
 (W numeric) The indicated string was fed as an argument to an operator
@@ -1690,6 +1662,19 @@ discovered.
 (F) You said something like "use Module 42" but in the Module file
 there are neither package declarations nor a C<$VERSION>.
 
+=item delete argument is not a HASH or ARRAY element or slice
+
+(F) The argument to delete() must be either a hash or array element,
+such as:
+
+    $foo{$bar}
+    $ref->{"susie"}[12]
+
+or a hash or array slice, such as:
+
+    @foo[$bar, $baz, $xyzzy]
+    @{$ref->[12]}{"susie", "queue"}
+
 =item Delimiter for here document is too long
 
 (F) In a here document construct like C<<<FOO>, the label C<FOO> is too
@@ -1904,6 +1889,21 @@ OS.  See L<perlport>.
 
 (F) The final summary message when a Perl compilation fails.
 
+=item exists argument is not a HASH or ARRAY element or a subroutine
+
+(F) The argument to exists() must be a hash or array element or a
+subroutine with an ampersand, such as:
+
+    $foo{$bar}
+    $ref->{"susie"}[12]
+    &do_something
+
+=item exists argument is not a subroutine name
+
+(F) The argument to exists() for C<exists &sub> must be a subroutine
+name, and not a subroutine call.  C<exists &sub()> will generate this
+error.
+
 =item Exiting eval via %s
 
 (W exiting) You are exiting an eval by unconventional means, such as a