Remove the MANIFEST from Compress-Raw-Bzip2

[perl5.git] / perly.y

diff --git a/perly.y b/perly.y
index 4dac4d0..aad4dd7 100644 (file)
--- a/perly.y
+++ b/perly.y
@@ -1,6 +1,7 @@
 /*    perly.y
  *
  *    Copyright (c) 1991-2002, 2003, 2004, 2005, 2006 Larry Wall
+ *    Copyright (c) 2007, 2008 by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -9,8 +10,12 @@
 
 /*
  * 'I see,' laughed Strider.  'I look foul and feel fair.  Is that it?
- * All that is gold does not glitter, not all those who wander are lost.'
+ *  All that is gold does not glitter, not all those who wander are lost.'
  *
+ *     [p.171 of _The Lord of the Rings_, I/x: "Strider"]
+ */
+
+/*
  * This file holds the grammar for the Perl language. If edited, you need
  * to run regen_perly.pl, which re-creates the files perly.h, perly.tab
  * and perly.act which are derived from this.
@@ -72,7 +77,7 @@
 %token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE
 %token <i_tkval> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR
 %token <i_tkval> GIVEN WHEN DEFAULT
-%token <i_tkval> LOOPEX DOTDOT
+%token <i_tkval> LOOPEX DOTDOT YADAYADA
 %token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP
 %token <i_tkval> RELOP EQOP MULOP ADDOP
 %token <i_tkval> DOLSHARP DO HASHBRACK NOAMP
@@ -106,7 +111,7 @@
 %left <i_tkval> ','
 %right <i_tkval> ASSIGNOP
 %right <i_tkval> '?' ':'
-%nonassoc DOTDOT
+%nonassoc DOTDOT YADAYADA
 %left <i_tkval> OROR DORDOR
 %left <i_tkval> ANDAND
 %left <i_tkval> BITOROP
@@ -177,7 +182,7 @@ mremember:  /* NULL */      /* start a partial lexical scope */
 
 /* A collection of "lines" in the program */
 lineseq        :       /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       lineseq decl
                        {
                        $$ = IF_MAD(
@@ -213,7 +218,7 @@ line        :       label cond
                          else {
                              $$ = IF_MAD(
                                        newOP(OP_NULL, 0),
-                                       Nullop);
+                                       (OP*)NULL);
                               PL_parser->copline = NOLINE;
                              TOKEN_FREE($1);
                              TOKEN_GETMAD($2,$$,';');
@@ -240,7 +245,7 @@ line        :       label cond
 
 /* An expression which may have a side-effect */
 sideff :       error
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       expr
                        { $$ = $1; }
        |       expr IF expr
@@ -261,21 +266,21 @@ sideff    :       error
                        }
        |       expr FOR expr
                        { $$ = newFOROP(0, NULL, (line_t)IVAL($2),
-                                       Nullop, $3, $1, Nullop);
+                                       (OP*)NULL, $3, $1, (OP*)NULL);
                          TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w');
                        }
        ;
 
 /* else and elsif blocks */
 else   :       /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       ELSE mblock
                        { ($2)->op_flags |= OPf_PARENS; $$ = scope($2);
                          TOKEN_GETMAD($1,$$,'o');
                        }
        |       ELSIF '(' mexpr ')' mblock else
                        { PL_parser->copline = (line_t)IVAL($1);
-                           $$ = newCONDOP(0, $3, scope($5), $6);
+                           $$ = newCONDOP(0, newSTATEOP(OPf_SPECIAL,NULL,$3), scope($5), $6);
                            PL_hints |= HINT_BLOCK_SCOPE;
                          TOKEN_GETMAD($1,$$,'I');
                          TOKEN_GETMAD($2,$$,'(');
@@ -312,7 +317,7 @@ case        :       WHEN '(' remember mexpr ')' mblock
 
 /* Continue blocks */
 cont   :       /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       CONTINUE block
                        { $$ = scope($2);
                          TOKEN_GETMAD($1,$$,'o');
@@ -325,7 +330,7 @@ loop        :       label WHILE '(' remember texpr ')' mintro mblock cont
                          PL_parser->copline = (line_t)$2;
                            $$ = block_end($4,
                                   newSTATEOP(0, PVAL($1),
-                                    innerop = newWHILEOP(0, 1, (LOOP*)Nullop,
+                                    innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
                                                IVAL($2), $5, $8, $9, $7)));
                          TOKEN_GETMAD($1,innerop,'L');
                          TOKEN_GETMAD($2,innerop,'W');
@@ -338,7 +343,7 @@ loop        :       label WHILE '(' remember texpr ')' mintro mblock cont
                          PL_parser->copline = (line_t)$2;
                            $$ = block_end($4,
                                   newSTATEOP(0, PVAL($1),
-                                    innerop = newWHILEOP(0, 1, (LOOP*)Nullop,
+                                    innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
                                                IVAL($2), $5, $8, $9, $7)));
                          TOKEN_GETMAD($1,innerop,'L');
                          TOKEN_GETMAD($2,innerop,'W');
@@ -370,7 +375,7 @@ loop        :       label WHILE '(' remember texpr ')' mintro mblock cont
                        { OP *innerop;
                          $$ = block_end($4,
                             innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2),
-                                                   Nullop, $5, $7, $8));
+                                                   (OP*)NULL, $5, $7, $8));
                          TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L');
                          TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W');
                          TOKEN_GETMAD($3,((LISTOP*)innerop)->op_first->op_sibling,'(');
@@ -382,7 +387,7 @@ loop        :       label WHILE '(' remember texpr ')' mintro mblock cont
                        { OP *forop;
                          PL_parser->copline = (line_t)IVAL($2);
                          forop = newSTATEOP(0, PVAL($1),
-                                           newWHILEOP(0, 1, (LOOP*)Nullop,
+                                           newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
                                                IVAL($2), scalar($7),
                                                $12, $10, $9));
 #ifdef MAD
@@ -410,8 +415,8 @@ loop        :       label WHILE '(' remember texpr ')' mintro mblock cont
                          $$ = block_end($4, forop); }
        |       label block cont  /* a block is a loop that happens once */
                        { $$ = newSTATEOP(0, PVAL($1),
-                                newWHILEOP(0, 1, (LOOP*)Nullop,
-                                           NOLINE, Nullop, $2, $3, 0));
+                                newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+                                           NOLINE, (OP*)NULL, $2, $3, 0));
                          TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); }
        ;
 
@@ -432,7 +437,7 @@ mintro      :       /* NULL */
 
 /* Normal expression */
 nexpr  :       /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       sideff
        ;
 
@@ -509,13 +514,13 @@ format    :       FORMAT startformsub formname block
                          token_free($1);
 #else
                          newFORM($2, $3, $4);
-                         $$ = Nullop;
+                         $$ = (OP*)NULL;
 #endif
                        }
        ;
 
 formname:      WORD            { $$ = $1; }
-       |       /* NULL */      { $$ = Nullop; }
+       |       /* NULL */      { $$ = (OP*)NULL; }
        ;
 
 /* Unimplemented "my sub foo { }" */
@@ -526,7 +531,7 @@ mysubrout:  MYSUB startsub subname proto subattrlist subbody
                          token_getmad($1,$$,'d');
 #else
                          newMYSUB($2, $3, $4, $5, $6);
-                         $$ = Nullop;
+                         $$ = (OP*)NULL;
 #endif
                        }
        ;
@@ -549,7 +554,7 @@ subrout     :       SUB startsub subname proto subattrlist subbody
                            }
 #else
                          newATTRSUB($2, $3, $4, $5, $6);
-                         $$ = Nullop;
+                         $$ = (OP*)NULL;
 #endif
                        }
        ;
@@ -581,13 +586,13 @@ subname   :       WORD    { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv);
 
 /* Subroutine prototype */
 proto  :       /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       THING
        ;
 
 /* Optional list of subroutine attributes */
 subattrlist:   /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       COLONATTR THING
                        { $$ = $2;
                          TOKEN_GETMAD($1,$$,':');
@@ -595,7 +600,7 @@ subattrlist:        /* NULL */
        |       COLONATTR
                        { $$ = IF_MAD(
                                    newOP(OP_NULL, 0),
-                                   Nullop
+                                   (OP*)NULL
                                );
                          TOKEN_GETMAD($1,$$,':');
                        }
@@ -609,7 +614,7 @@ myattrlist: COLONATTR THING
        |       COLONATTR
                        { $$ = IF_MAD(
                                    newOP(OP_NULL, 0),
-                                   Nullop
+                                   (OP*)NULL
                                );
                          TOKEN_GETMAD($1,$$,':');
                        }
@@ -619,7 +624,7 @@ myattrlist: COLONATTR THING
 subbody        :       block   { $$ = $1; }
        |       ';'     { $$ = IF_MAD(
                                    newOP(OP_NULL,0),
-                                   Nullop
+                                   (OP*)NULL
                                );
                          PL_parser->expect = XSTATE;
                          TOKEN_GETMAD($1,$$,';');
@@ -634,7 +639,7 @@ package :   PACKAGE WORD ';'
                          token_getmad($3,$$,';');
 #else
                          package($2);
-                         $$ = Nullop;
+                         $$ = (OP*)NULL;
 #endif
                        }
        ;
@@ -652,7 +657,7 @@ use :       USE startsub
                              append_madprops(newMADPROP('!', MAD_PV, "", 0), $$, 0);
 #else
                          utilize(IVAL($1), $2, $4, $5, $6);
-                         $$ = Nullop;
+                         $$ = (OP*)NULL;
 #endif
                        }
        ;
@@ -750,7 +755,7 @@ listop      :       LSTOP indirob argexpr /* map {...} @args or print $fh @args */
                        }
        |       LSTOPSUB startanonsub block /* sub f(&@);   f { foo } ... */
                        { SvREFCNT_inc_simple_void(PL_compcv);
-                         $<opval>$ = newANONATTRSUB($2, 0, Nullop, $3); }
+                         $<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); }
                    listexpr            %prec LSTOP  /* ... @bar */
                        { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
                                 append_elem(OP_LIST,
@@ -856,7 +861,7 @@ subscripted:    star '{' expr ';' '}'        /* *main::{something} */
                          TOKEN_GETMAD($6,$$,']');
                        }
        |       '(' ')' '[' expr ']'                 /* empty list slice! */
-                       { $$ = newSLICEOP(0, $4, Nullop);
+                       { $$ = newSLICEOP(0, $4, (OP*)NULL);
                          TOKEN_GETMAD($1,$$,'(');
                          TOKEN_GETMAD($2,$$,')');
                          TOKEN_GETMAD($3,$$,'[');
@@ -986,7 +991,7 @@ anonymous:  '[' expr ']'
                          TOKEN_GETMAD($3,$$,']');
                        }
        |       '[' ']'
-                       { $$ = newANONLIST(Nullop);
+                       { $$ = newANONLIST((OP*)NULL);
                          TOKEN_GETMAD($1,$$,'[');
                          TOKEN_GETMAD($2,$$,']');
                        }
@@ -997,7 +1002,7 @@ anonymous: '[' expr ']'
                          TOKEN_GETMAD($4,$$,'}');
                        }
        |       HASHBRACK ';' '}'       %prec '(' /* { } (';' by tokener) */
-                       { $$ = newANONHASH(Nullop);
+                       { $$ = newANONHASH((OP*)NULL);
                          TOKEN_GETMAD($1,$$,'{');
                          TOKEN_GETMAD($2,$$,';');
                          TOKEN_GETMAD($3,$$,'}');
@@ -1028,7 +1033,7 @@ termdo    :       DO term %prec UNIOP                     /* do $filename */
                                scalar(newCVREF(
                                    (OPpENTERSUB_AMPER<<8),
                                    scalar($2)
-                               )),Nullop)); dep();
+                               )),(OP*)NULL)); dep();
                          TOKEN_GETMAD($1,$$,'o');
                          TOKEN_GETMAD($3,$$,'(');
                          TOKEN_GETMAD($4,$$,')');
@@ -1049,7 +1054,7 @@ termdo    :       DO term %prec UNIOP                     /* do $filename */
        |       DO scalar '(' ')'                      /* do $subref () */
                        { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
                            prepend_elem(OP_LIST,
-                               scalar(newCVREF(0,scalar($2))), Nullop)); dep();
+                               scalar(newCVREF(0,scalar($2))), (OP*)NULL)); dep();
                          TOKEN_GETMAD($1,$$,'o');
                          TOKEN_GETMAD($3,$$,'(');
                          TOKEN_GETMAD($4,$$,')');
@@ -1227,6 +1232,11 @@ term     :       termbinop
                        }
        |       WORD
        |       listop
+       |       YADAYADA
+                       {
+                         $$ = newLISTOP(OP_DIE, 0, newOP(OP_PUSHMARK, 0),
+                               newSVOP(OP_CONST, 0, newSVpvs("Unimplemented")));
+                       }
        ;
 
 /* "my" declarations, with optional attributes */
@@ -1265,13 +1275,13 @@ myterm  :       '(' expr ')'
 
 /* Basic list expressions */
 listexpr:      /* NULL */ %prec PREC_LOW
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       argexpr    %prec PREC_LOW
                        { $$ = $1; }
        ;
 
 listexprcom:   /* NULL */
-                       { $$ = Nullop; }
+                       { $$ = (OP*)NULL; }
        |       expr
                        { $$ = $1; }
        |       expr ','