/* perly.y
*
* Copyright (c) 1991-2002, 2003, 2004, 2005, 2006 Larry Wall
- * Copyright (c) 2007, 2008 by Larry Wall and others
+ * Copyright (c) 2007, 2008, 2009, 2010, 2011 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.
#endif
}
-%token <ival> GRAMPROG GRAMBLOCK GRAMFULLSTMT GRAMSTMTSEQ
+%token <ival> GRAMPROG GRAMEXPR GRAMBLOCK GRAMBARESTMT GRAMFULLSTMT GRAMSTMTSEQ
%token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';'
%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF QWLIST
-%token <opval> FUNC0SUB UNIOPSUB LSTOPSUB
+%token <opval> FUNC0OP FUNC0SUB UNIOPSUB LSTOPSUB
%token <opval> PLUGEXPR PLUGSTMT
%token <p_tkval> LABEL
%token <i_tkval> FORMAT SUB ANONSUB PACKAGE USE
%type <i_tkval> lpar_or_qw
-%type <ival> grammar prog progstart remember mremember
+%type <ival> grammar remember mremember
%type <ival> startsub startanonsub startformsub
/* FIXME for MAD - are these two ival? */
%type <ival> mydefsv mintro
-%type <opval> fullstmt decl format subrout mysubrout package use peg
-%type <opval> block package_block mblock lineseq line loop cond else
+%type <opval> stmtseq fullstmt labfullstmt barestmt block mblock else
%type <opval> expr term subscripted scalar ary hsh arylen star amper sideff
-%type <opval> argexpr nexpr texpr iexpr mexpr mnexpr miexpr
-%type <opval> listexpr listexprcom indirob listop method
+%type <opval> listexpr nexpr texpr iexpr mexpr mnexpr miexpr
+%type <opval> optlistexpr optexpr indirob listop method
%type <opval> formname subname proto subbody cont my_scalar
%type <opval> subattrlist myattrlist myattrterm myterm
%type <opval> termbinop termunop anonymous termdo
-%type <opval> switch case
-%type <p_tkval> label
%nonassoc <i_tkval> PREC_LOW
%nonassoc LOOPEX
%% /* RULES */
/* Top-level choice of what kind of thing yyparse was called to parse */
-grammar : GRAMPROG prog
- { $$ = $2; }
+grammar : GRAMPROG
+ {
+ PL_parser->expect = XSTATE;
+ }
+ remember stmtseq
+ {
+ newPROG(block_end($3,$4));
+ $$ = 0;
+ }
+ | GRAMEXPR
+ {
+ parser->expect = XTERM;
+ }
+ optexpr
+ {
+ PL_eval_root = $3;
+ $$ = 0;
+ }
| GRAMBLOCK
{
parser->expect = XBLOCK;
}
block
{
+ PL_pad_reset_pending = TRUE;
+ PL_eval_root = $3;
+ $$ = 0;
+ yyunlex();
+ parser->yychar = YYEOF;
+ }
+ | GRAMBARESTMT
+ {
+ parser->expect = XSTATE;
+ }
+ barestmt
+ {
+ PL_pad_reset_pending = TRUE;
PL_eval_root = $3;
$$ = 0;
yyunlex();
}
fullstmt
{
+ PL_pad_reset_pending = TRUE;
PL_eval_root = $3;
$$ = 0;
yyunlex();
{
parser->expect = XSTATE;
}
- lineseq
+ stmtseq
{
PL_eval_root = $3;
$$ = 0;
}
;
-/* The whole program */
-prog : progstart
- /*CONTINUED*/ lineseq
- { $$ = $1; newPROG(block_end($1,$2)); }
- ;
-
/* An ordinary block */
-block : '{' remember lineseq '}'
+block : '{' remember stmtseq '}'
{ if (PL_parser->copline > (line_t)IVAL($1))
PL_parser->copline = (line_t)IVAL($1);
$$ = block_end($2, $3);
{ $$ = (I32) Perl_allocmy(aTHX_ STR_WITH_LEN("$_"), 0); }
;
-progstart:
- {
- PL_parser->expect = XSTATE; $$ = block_start(TRUE);
- }
- ;
-
-
-mblock : '{' mremember lineseq '}'
+mblock : '{' mremember stmtseq '}'
{ if (PL_parser->copline > (line_t)IVAL($1))
PL_parser->copline = (line_t)IVAL($1);
$$ = block_end($2, $3);
{ $$ = block_start(FALSE); }
;
-/* A collection of "lines" in the program */
-lineseq : /* NULL */
+/* A sequence of statements in the program */
+stmtseq : /* NULL */
{ $$ = (OP*)NULL; }
- | lineseq decl
- {
- $$ = IF_MAD(op_append_list(OP_LINESEQ, $1, $2), $1);
- }
- | lineseq line
+ | stmtseq fullstmt
{ $$ = op_append_list(OP_LINESEQ, $1, $2);
PL_pad_reset_pending = TRUE;
if ($1 && $2)
}
;
-/* A statement, or "line", in the program */
-fullstmt: decl
+/* A statement in the program, including optional labels */
+fullstmt: barestmt
+ {
+ if($1) {
+ $$ = newSTATEOP(0, NULL, $1);
+ } else {
+ $$ = IF_MAD(newOP(OP_NULL, 0), NULL);
+ }
+ }
+ | labfullstmt
{ $$ = $1; }
- | line
+ ;
+
+labfullstmt: LABEL barestmt
{
- PL_pad_reset_pending = TRUE;
- $$ = $1;
+ $$ = newSTATEOP(0, PVAL($1), $2);
+ TOKEN_GETMAD($1,
+ $2 ? cLISTOPx($$)->op_first : $$, 'L');
+ }
+ | LABEL labfullstmt
+ {
+ $$ = newSTATEOP(0, PVAL($1), $2);
+ TOKEN_GETMAD($1, cLISTOPx($$)->op_first, 'L');
}
;
-/* A non-declaration statement */
-line : label cond
- { $$ = newSTATEOP(0, PVAL($1), $2);
- TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); }
- | loop /* loops add their own labels */
- | switch /* ... and so do switches */
+/* A bare statement, lacking label and other aspects of state op */
+barestmt: PLUGSTMT
{ $$ = $1; }
- | label case
- { $$ = newSTATEOP(0, PVAL($1), $2); }
- | label ';'
+ | PEG
+ {
+ $$ = newOP(OP_NULL,0);
+ TOKEN_GETMAD($1,$$,'p');
+ }
+ | FORMAT startformsub formname block
{
- if (PVAL($1)) {
- $$ = newSTATEOP(0, PVAL($1), newOP(OP_NULL, 0));
- TOKEN_GETMAD($1,$$,'L');
- TOKEN_GETMAD($2,((LISTOP*)$$)->op_first,';');
+ CV *fmtcv = PL_compcv;
+ SvREFCNT_inc_simple_void(PL_compcv);
+#ifdef MAD
+ $$ = newFORM($2, $3, $4);
+ prepend_madprops($1->tk_mad, $$, 'F');
+ $1->tk_mad = 0;
+ token_free($1);
+#else
+ newFORM($2, $3, $4);
+ $$ = (OP*)NULL;
+#endif
+ if (CvOUTSIDE(fmtcv) && !CvUNIQUE(CvOUTSIDE(fmtcv))) {
+ SvREFCNT_inc_simple_void(fmtcv);
+ pad_add_anon(fmtcv, OP_NULL);
}
- else {
- $$ = IF_MAD(
- newOP(OP_NULL, 0),
- (OP*)NULL);
- PL_parser->copline = NOLINE;
- TOKEN_FREE($1);
- TOKEN_GETMAD($2,$$,';');
+ }
+ | SUB startsub subname proto subattrlist subbody
+ {
+ SvREFCNT_inc_simple_void(PL_compcv);
+#ifdef MAD
+ {
+ OP* o = newSVOP(OP_ANONCODE, 0,
+ (SV*)newATTRSUB($2, $3, $4, $5, $6));
+ $$ = newOP(OP_NULL,0);
+ op_getmad(o,$$,'&');
+ op_getmad($3,$$,'n');
+ op_getmad($4,$$,'s');
+ op_getmad($5,$$,'a');
+ token_getmad($1,$$,'d');
+ append_madprops($6->op_madprop, $$, 0);
+ $6->op_madprop = 0;
}
+#else
+ newATTRSUB($2, $3, $4, $5, $6);
+ $$ = (OP*)NULL;
+#endif
+ }
+ | MYSUB startsub subname proto subattrlist subbody
+ {
+ /* Unimplemented "my sub foo { }" */
+ SvREFCNT_inc_simple_void(PL_compcv);
+#ifdef MAD
+ $$ = newMYSUB($2, $3, $4, $5, $6);
+ token_getmad($1,$$,'d');
+#else
+ newMYSUB($2, $3, $4, $5, $6);
+ $$ = (OP*)NULL;
+#endif
+ }
+ | PACKAGE WORD WORD ';'
+ {
+#ifdef MAD
+ $$ = package($3);
+ token_getmad($1,$$,'o');
+ if ($2)
+ package_version($2);
+ token_getmad($4,$$,';');
+#else
+ package($3);
+ if ($2)
+ package_version($2);
+ $$ = (OP*)NULL;
+#endif
+ }
+ | USE startsub
+ { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
+ WORD WORD optlistexpr ';'
+ {
+ SvREFCNT_inc_simple_void(PL_compcv);
+#ifdef MAD
+ $$ = utilize(IVAL($1), $2, $4, $5, $6);
+ token_getmad($1,$$,'o');
+ token_getmad($7,$$,';');
+ if (PL_parser->rsfp_filters &&
+ AvFILLp(PL_parser->rsfp_filters) >= 0)
+ append_madprops(newMADPROP('!', MAD_NULL, NULL, 0), $$, 0);
+#else
+ utilize(IVAL($1), $2, $4, $5, $6);
+ $$ = (OP*)NULL;
+#endif
+ }
+ | IF lpar_or_qw remember mexpr ')' mblock else
+ {
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
+ TOKEN_GETMAD($1,$$,'I');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | UNLESS lpar_or_qw remember miexpr ')' mblock else
+ {
+ $$ = block_end($3,
+ newCONDOP(0, $4, op_scope($6), $7));
+ TOKEN_GETMAD($1,$$,'I');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | GIVEN lpar_or_qw remember mydefsv mexpr ')' mblock
+ {
+ $$ = block_end($3,
+ newGIVENOP($5, op_scope($7), (PADOFFSET)$4));
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | WHEN lpar_or_qw remember mexpr ')' mblock
+ { $$ = block_end($3, newWHENOP($4, op_scope($6))); }
+ | DEFAULT block
+ { $$ = newWHENOP(0, op_scope($2)); }
+ | WHILE lpar_or_qw remember texpr ')' mintro mblock cont
+ {
+ $$ = block_end($3,
+ newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ $4, $7, $8, $6));
+ TOKEN_GETMAD($1,$$,'W');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | UNTIL lpar_or_qw remember iexpr ')' mintro mblock cont
+ {
+ $$ = block_end($3,
+ newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ $4, $7, $8, $6));
+ TOKEN_GETMAD($1,$$,'W');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | FOR lpar_or_qw remember mnexpr ';' texpr ';' mintro mnexpr ')'
+ mblock
+ {
+ OP *initop = IF_MAD($4 ? $4 : newOP(OP_NULL, 0), $4);
+ OP *forop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ scalar($6), $11, $9, $8);
+ if (initop) {
+ forop = op_prepend_elem(OP_LINESEQ, initop,
+ op_append_elem(OP_LINESEQ,
+ newOP(OP_UNSTACK, OPf_SPECIAL),
+ forop));
+ }
+ DO_MAD({ forop = newUNOP(OP_NULL, 0, forop); })
+ $$ = block_end($3, forop);
+ TOKEN_GETMAD($1,$$,'3');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,'1');
+ TOKEN_GETMAD($7,$$,'2');
+ TOKEN_GETMAD($10,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | FOR MY remember my_scalar lpar_or_qw mexpr ')' mblock cont
+ {
+ $$ = block_end($3, newFOROP(0, $4, $6, $8, $9));
+ TOKEN_GETMAD($1,$$,'W');
+ TOKEN_GETMAD($2,$$,'d');
+ TOKEN_GETMAD($5,$$,'(');
+ TOKEN_GETMAD($7,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | FOR scalar lpar_or_qw remember mexpr ')' mblock cont
+ {
+ $$ = block_end($4, newFOROP(0,
+ op_lvalue($2, OP_ENTERLOOP), $5, $7, $8));
+ TOKEN_GETMAD($1,$$,'W');
+ TOKEN_GETMAD($3,$$,'(');
+ TOKEN_GETMAD($6,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | FOR lpar_or_qw remember mexpr ')' mblock cont
+ {
+ $$ = block_end($3,
+ newFOROP(0, (OP*)NULL, $4, $6, $7));
+ TOKEN_GETMAD($1,$$,'W');
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($5,$$,')');
+ PL_parser->copline = (line_t)IVAL($1);
+ }
+ | block cont
+ {
+ /* a block is a loop that happens once */
+ $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ (OP*)NULL, $1, $2, 0);
+ }
+ | PACKAGE WORD WORD '{' remember
+ {
+ int save_3_latefree = $3->op_latefree;
+ $3->op_latefree = 1;
+ package($3);
+ $3->op_latefree = save_3_latefree;
+ if ($2) {
+ int save_2_latefree = $2->op_latefree;
+ $2->op_latefree = 1;
+ package_version($2);
+ $2->op_latefree = save_2_latefree;
+ }
+ }
+ stmtseq '}'
+ {
+ /* a block is a loop that happens once */
+ $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
+ (OP*)NULL, block_end($5, $7), (OP*)NULL, 0);
+ op_free($3);
+ if ($2)
+ op_free($2);
+ TOKEN_GETMAD($4,$$,'{');
+ TOKEN_GETMAD($8,$$,'}');
+ if (PL_parser->copline > (line_t)IVAL($4))
+ PL_parser->copline = (line_t)IVAL($4);
+ }
+ | sideff ';'
+ {
PL_parser->expect = XSTATE;
+ $$ = $1;
+ TOKEN_GETMAD($2,$$,';');
}
- | label sideff ';'
+ | ';'
{
- $$ = newSTATEOP(0, PVAL($1), $2);
PL_parser->expect = XSTATE;
- DO_MAD({
- /* sideff might already have a nexstate */
- OP* op = ((LISTOP*)$$)->op_first;
- if (op) {
- while (op->op_sibling &&
- op->op_sibling->op_type == OP_NEXTSTATE)
- op = op->op_sibling;
- token_getmad($1,op,'L');
- token_getmad($3,op,';');
- }
- })
+ $$ = IF_MAD(newOP(OP_NULL, 0), (OP*)NULL);
+ TOKEN_GETMAD($1,$$,';');
+ PL_parser->copline = NOLINE;
}
- | package_block
- { $$ = newSTATEOP(0, NULL,
- newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- NOLINE, (OP*)NULL, $1,
- (OP*)NULL, 0)); }
- | label PLUGSTMT
- { $$ = newSTATEOP(0, PVAL($1), $2); }
;
/* An expression which may have a side-effect */
TOKEN_GETMAD($2,$$,'w');
}
| expr FOR expr
- { $$ = newFOROP(0, NULL, (line_t)IVAL($2),
- (OP*)NULL, $3, $1, (OP*)NULL);
- TOKEN_GETMAD($2,((LISTOP*)$$)->op_first->op_sibling,'w');
+ { $$ = newFOROP(0, (OP*)NULL, $3, $1, (OP*)NULL);
+ TOKEN_GETMAD($2,$$,'w');
+ PL_parser->copline = (line_t)IVAL($2);
}
| expr WHEN expr
- { $$ = newWHENOP($3, scope($1)); }
+ { $$ = newWHENOP($3, op_scope($1)); }
;
/* else and elsif blocks */
else : /* NULL */
{ $$ = (OP*)NULL; }
| ELSE mblock
- { ($2)->op_flags |= OPf_PARENS; $$ = scope($2);
+ {
+ ($2)->op_flags |= OPf_PARENS;
+ $$ = op_scope($2);
TOKEN_GETMAD($1,$$,'o');
}
| ELSIF lpar_or_qw mexpr ')' mblock else
{ PL_parser->copline = (line_t)IVAL($1);
- $$ = newCONDOP(0, newSTATEOP(OPf_SPECIAL,NULL,$3), scope($5), $6);
- PL_hints |= HINT_BLOCK_SCOPE;
+ $$ = newCONDOP(0,
+ newSTATEOP(OPf_SPECIAL,NULL,$3),
+ op_scope($5), $6);
+ PL_hints |= HINT_BLOCK_SCOPE;
TOKEN_GETMAD($1,$$,'I');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
;
-/* Real conditional expressions */
-cond : IF lpar_or_qw remember mexpr ')' mblock else
- { PL_parser->copline = (line_t)IVAL($1);
- $$ = block_end($3,
- newCONDOP(0, $4, scope($6), $7));
- TOKEN_GETMAD($1,$$,'I');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
- | UNLESS lpar_or_qw remember miexpr ')' mblock else
- { PL_parser->copline = (line_t)IVAL($1);
- $$ = block_end($3,
- newCONDOP(0, $4, scope($6), $7));
- TOKEN_GETMAD($1,$$,'I');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
- ;
-
-/* Cases for a switch statement */
-case : WHEN lpar_or_qw remember mexpr ')' mblock
- { $$ = block_end($3,
- newWHENOP($4, scope($6))); }
- | DEFAULT block
- { $$ = newWHENOP(0, scope($2)); }
- ;
-
/* Continue blocks */
cont : /* NULL */
{ $$ = (OP*)NULL; }
| CONTINUE block
- { $$ = scope($2);
+ {
+ $$ = op_scope($2);
TOKEN_GETMAD($1,$$,'o');
}
;
-/* Loops: while, until, for, and a bare block */
-loop : label WHILE lpar_or_qw remember texpr ')' mintro mblock cont
- { OP *innerop;
- PL_parser->copline = (line_t)IVAL($2);
- $$ = block_end($4,
- newSTATEOP(0, PVAL($1),
- innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- IVAL($2), $5, $8, $9, $7)));
- TOKEN_GETMAD($1,innerop,'L');
- TOKEN_GETMAD($2,innerop,'W');
- TOKEN_GETMAD($3,innerop,'(');
- TOKEN_GETMAD($6,innerop,')');
- }
-
- | label UNTIL lpar_or_qw remember iexpr ')' mintro mblock cont
- { OP *innerop;
- PL_parser->copline = (line_t)IVAL($2);
- $$ = block_end($4,
- newSTATEOP(0, PVAL($1),
- innerop = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- IVAL($2), $5, $8, $9, $7)));
- TOKEN_GETMAD($1,innerop,'L');
- TOKEN_GETMAD($2,innerop,'W');
- TOKEN_GETMAD($3,innerop,'(');
- TOKEN_GETMAD($6,innerop,')');
- }
- | label FOR MY remember my_scalar lpar_or_qw mexpr ')' mblock cont
- { OP *innerop;
- $$ = block_end($4,
- innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2),
- $5, $7, $9, $10));
- 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,'d');
- TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,'(');
- TOKEN_GETMAD($8,((LISTOP*)innerop)->op_first->op_sibling,')');
- }
- | label FOR scalar lpar_or_qw remember mexpr ')' mblock cont
- { OP *innerop;
- $$ = block_end($5,
- innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2),
- mod($3, OP_ENTERLOOP), $6, $8, $9));
- TOKEN_GETMAD($1,((LISTOP*)innerop)->op_first,'L');
- TOKEN_GETMAD($2,((LISTOP*)innerop)->op_first->op_sibling,'W');
- TOKEN_GETMAD($4,((LISTOP*)innerop)->op_first->op_sibling,'(');
- TOKEN_GETMAD($7,((LISTOP*)innerop)->op_first->op_sibling,')');
- }
- | label FOR lpar_or_qw remember mexpr ')' mblock cont
- { OP *innerop;
- $$ = block_end($4,
- innerop = newFOROP(0, PVAL($1), (line_t)IVAL($2),
- (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,'(');
- TOKEN_GETMAD($6,((LISTOP*)innerop)->op_first->op_sibling,')');
- }
- | label FOR lpar_or_qw remember mnexpr ';' texpr ';' mintro mnexpr ')'
- mblock
- /* basically fake up an initialize-while lineseq */
- { OP *forop;
- PL_parser->copline = (line_t)IVAL($2);
- forop = newSTATEOP(0, PVAL($1),
- newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- IVAL($2), scalar($7),
- $12, $10, $9));
-#ifdef MAD
- forop = newUNOP(OP_NULL, 0, op_append_elem(OP_LINESEQ,
- newSTATEOP(0,
- CopLABEL_alloc(($1)->tk_lval.pval),
- ($5 ? $5 : newOP(OP_NULL, 0)) ),
- forop));
-
- token_getmad($2,forop,'3');
- token_getmad($3,forop,'(');
- token_getmad($6,forop,'1');
- token_getmad($8,forop,'2');
- token_getmad($11,forop,')');
- token_getmad($1,forop,'L');
-#else
- if ($5) {
- forop = op_append_elem(OP_LINESEQ,
- newSTATEOP(0, CopLABEL_alloc($1), $5),
- forop);
- }
-
-
-#endif
- $$ = block_end($4, forop); }
- | label block cont /* a block is a loop that happens once */
- { $$ = newSTATEOP(0, PVAL($1),
- newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- NOLINE, (OP*)NULL, $2, $3, 0));
- TOKEN_GETMAD($1,((LISTOP*)$$)->op_first,'L'); }
- ;
-
-/* Switch blocks */
-switch : label GIVEN lpar_or_qw remember mydefsv mexpr ')' mblock
- { PL_parser->copline = (line_t) IVAL($2);
- $$ = block_end($4,
- newSTATEOP(0, PVAL($1),
- newGIVENOP($6, scope($8),
- (PADOFFSET) $5) )); }
- ;
-
/* determine whether there are any new my declarations */
mintro : /* NULL */
{ $$ = (PL_min_intro_pending &&
{ $$ = $1; intro_my(); }
;
-/* Optional "MAIN:"-style loop labels */
-label : /* empty */
- {
-#ifdef MAD
- YYSTYPE tmplval;
- tmplval.pval = NULL;
- $$ = newTOKEN(OP_NULL, tmplval, 0);
-#else
- $$ = NULL;
-#endif
- }
- | LABEL
- ;
-
-/* Some kind of declaration - just hang on peg in the parse tree */
-decl : format
- { $$ = $1; }
- | subrout
- { $$ = $1; }
- | mysubrout
- { $$ = $1; }
- | package
- { $$ = $1; }
- | use
- { $$ = $1; }
-
- /* these two are only used by MAD */
-
- | peg
- { $$ = $1; }
- ;
-
-peg : PEG
- { $$ = newOP(OP_NULL,0);
- TOKEN_GETMAD($1,$$,'p');
- }
- ;
-
-format : FORMAT startformsub formname block
- {
- CV *fmtcv = PL_compcv;
- SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- $$ = newFORM($2, $3, $4);
- prepend_madprops($1->tk_mad, $$, 'F');
- $1->tk_mad = 0;
- token_free($1);
-#else
- newFORM($2, $3, $4);
- $$ = (OP*)NULL;
-#endif
- if (CvOUTSIDE(fmtcv) && !CvUNIQUE(CvOUTSIDE(fmtcv))) {
- SvREFCNT_inc_simple_void(fmtcv);
- pad_add_anon((SV*)fmtcv, OP_NULL);
- }
- }
- ;
-
formname: WORD { $$ = $1; }
| /* NULL */ { $$ = (OP*)NULL; }
;
-/* Unimplemented "my sub foo { }" */
-mysubrout: MYSUB startsub subname proto subattrlist subbody
- { SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- $$ = newMYSUB($2, $3, $4, $5, $6);
- token_getmad($1,$$,'d');
-#else
- newMYSUB($2, $3, $4, $5, $6);
- $$ = (OP*)NULL;
-#endif
- }
- ;
-
-/* Subroutine definition */
-subrout : SUB startsub subname proto subattrlist subbody
- { SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- {
- OP* o = newSVOP(OP_ANONCODE, 0,
- (SV*)newATTRSUB($2, $3, $4, $5, $6));
- $$ = newOP(OP_NULL,0);
- op_getmad(o,$$,'&');
- op_getmad($3,$$,'n');
- op_getmad($4,$$,'s');
- op_getmad($5,$$,'a');
- token_getmad($1,$$,'d');
- append_madprops($6->op_madprop, $$, 0);
- $6->op_madprop = 0;
- }
-#else
- newATTRSUB($2, $3, $4, $5, $6);
- $$ = (OP*)NULL;
-#endif
- }
- ;
-
startsub: /* NULL */ /* start a regular subroutine scope */
{ $$ = start_subparse(FALSE, 0);
SAVEFREESV(PL_compcv); }
}
;
-package : PACKAGE WORD WORD ';'
- {
-#ifdef MAD
- $$ = package($3);
- token_getmad($1,$$,'o');
- if ($2)
- package_version($2);
- token_getmad($4,$$,';');
-#else
- package($3);
- if ($2)
- package_version($2);
- $$ = (OP*)NULL;
-#endif
- }
- ;
-
-package_block: PACKAGE WORD WORD '{' remember
- {
- int save_3_latefree = $3->op_latefree;
- $3->op_latefree = 1;
- package($3);
- $3->op_latefree = save_3_latefree;
- if ($2) {
- int save_2_latefree = $2->op_latefree;
- $2->op_latefree = 1;
- package_version($2);
- $2->op_latefree = save_2_latefree;
- }
- }
- lineseq '}'
- { if (PL_parser->copline > (line_t)IVAL($4))
- PL_parser->copline = (line_t)IVAL($4);
- $$ = block_end($5, $7);
- TOKEN_GETMAD($4,$$,'{');
- TOKEN_GETMAD($8,$$,'}');
- op_free($3);
- if ($2)
- op_free($2);
- }
- ;
-
-use : USE startsub
- { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
- WORD WORD listexpr ';'
- { SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- $$ = utilize(IVAL($1), $2, $4, $5, $6);
- token_getmad($1,$$,'o');
- token_getmad($7,$$,';');
- if (PL_parser->rsfp_filters &&
- AvFILLp(PL_parser->rsfp_filters) >= 0)
- append_madprops(newMADPROP('!', MAD_NULL, NULL, 0), $$, 0);
-#else
- utilize(IVAL($1), $2, $4, $5, $6);
- $$ = (OP*)NULL;
-#endif
- }
- ;
-
/* Ordinary expressions; logical combinations */
expr : expr ANDOP expr
{ $$ = newLOGOP(OP_AND, 0, $1, $3);
{ $$ = newLOGOP(OP_DOR, 0, $1, $3);
TOKEN_GETMAD($2,$$,'o');
}
- | argexpr %prec PREC_LOW
+ | listexpr %prec PREC_LOW
;
/* Expressions are a list of terms joined by commas */
-argexpr : argexpr ','
+listexpr: listexpr ','
{
#ifdef MAD
OP* op = newNULLLIST();
$$ = $1;
#endif
}
- | argexpr ',' term
+ | listexpr ',' term
{
OP* term = $3;
DO_MAD(
;
/* List operators */
-listop : LSTOP indirob argexpr /* map {...} @args or print $fh @args */
+listop : LSTOP indirob listexpr /* map {...} @args or print $fh @args */
{ $$ = convert(IVAL($1), OPf_STACKED,
op_prepend_elem(OP_LIST, newGVREF(IVAL($1),$2), $3) );
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | term ARROW method lpar_or_qw listexprcom ')' /* $foo->bar(list) */
+ | term ARROW method lpar_or_qw optexpr ')' /* $foo->bar(list) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, scalar($1), $5),
newUNOP(OP_METHOD, 0, $3)));
TOKEN_GETMAD($2,$$,'A');
}
- | METHOD indirob listexpr /* new Class @args */
+ | METHOD indirob optlistexpr /* new Class @args */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $2, $3),
newUNOP(OP_METHOD, 0, $1)));
}
- | FUNCMETH indirob '(' listexprcom ')' /* method $object (@args) */
+ | FUNCMETH indirob '(' optexpr ')' /* method $object (@args) */
{ $$ = convert(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $2, $4),
TOKEN_GETMAD($3,$$,'(');
TOKEN_GETMAD($5,$$,')');
}
- | LSTOP listexpr /* print @args */
+ | LSTOP optlistexpr /* print @args */
{ $$ = convert(IVAL($1), 0, $2);
TOKEN_GETMAD($1,$$,'o');
}
- | FUNC '(' listexprcom ')' /* print (@args) */
+ | FUNC '(' optexpr ')' /* print (@args) */
{ $$ = convert(IVAL($1), 0, $3);
TOKEN_GETMAD($1,$$,'o');
TOKEN_GETMAD($2,$$,'(');
| LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */
{ SvREFCNT_inc_simple_void(PL_compcv);
$<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); }
- listexpr %prec LSTOP /* ... @bar */
+ optlistexpr %prec LSTOP /* ... @bar */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
op_prepend_elem(OP_LIST, $<opval>4, $5), $1));
TOKEN_GETMAD($2,$$,'[');
TOKEN_GETMAD($4,$$,']');
}
- | scalar '{' expr ';' '}' /* $foo->{bar();} */
+ | scalar '{' expr ';' '}' /* $foo{bar();} */
{ $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
PL_parser->expect = XOPERATOR;
TOKEN_GETMAD($2,$$,'{');
}
| term POSTINC /* $x++ */
{ $$ = newUNOP(OP_POSTINC, 0,
- mod(scalar($1), OP_POSTINC));
+ op_lvalue(scalar($1), OP_POSTINC));
TOKEN_GETMAD($2,$$,'o');
}
| term POSTDEC /* $x-- */
{ $$ = newUNOP(OP_POSTDEC, 0,
- mod(scalar($1), OP_POSTDEC));
+ op_lvalue(scalar($1), OP_POSTDEC));
TOKEN_GETMAD($2,$$,'o');
}
| PREINC term /* ++$x */
{ $$ = newUNOP(OP_PREINC, 0,
- mod(scalar($2), OP_PREINC));
+ op_lvalue(scalar($2), OP_PREINC));
TOKEN_GETMAD($1,$$,'o');
}
| PREDEC term /* --$x */
{ $$ = newUNOP(OP_PREDEC, 0,
- mod(scalar($2), OP_PREDEC));
+ op_lvalue(scalar($2), OP_PREDEC));
TOKEN_GETMAD($1,$$,'o');
}
TOKEN_GETMAD($1,$$,'o');
}
| DO block %prec '(' /* do { code */
- { $$ = newUNOP(OP_NULL, OPf_SPECIAL, scope($2));
+ { $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));
TOKEN_GETMAD($1,$$,'D');
}
| DO WORD lpar_or_qw ')' /* do somesub() */
TOKEN_GETMAD($4,$$,':');
}
| REFGEN term /* \$x, \@y, \%z */
- { $$ = newUNOP(OP_REFGEN, 0, mod($2,OP_REFGEN));
+ { $$ = newUNOP(OP_REFGEN, 0, op_lvalue($2,OP_REFGEN));
TOKEN_GETMAD($1,$$,'o');
}
| myattrterm %prec UNIOP
token_getmad($4,op,')');
})
}
- | NOAMP WORD listexpr /* foo(@args) */
+ | NOAMP WORD optlistexpr /* foo(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST, $3, scalar($2)));
TOKEN_GETMAD($1,$$,'o');
{ $$ = newLOOPEX(IVAL($1),$2);
TOKEN_GETMAD($1,$$,'o');
}
- | NOTOP argexpr /* not $foo */
+ | NOTOP listexpr /* not $foo */
{ $$ = newUNOP(OP_NOT, 0, scalar($2));
TOKEN_GETMAD($1,$$,'o');
}
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($3,$$,')');
}
+ | FUNC0OP /* Same as above, but op created in toke.c */
+ { $$ = $1; }
+ | FUNC0OP '(' ')'
+ { $$ = $1;
+ TOKEN_GETMAD($2,$$,'(');
+ TOKEN_GETMAD($3,$$,')');
+ }
| FUNC0SUB /* Sub treated as nullop */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
scalar($1)); }
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
}
- | PMFUNC '(' argexpr ')' /* m//, s///, tr/// */
+ | PMFUNC '(' listexpr ')' /* m//, s///, tr/// */
{ $$ = pmruntime($1, $3, 1);
TOKEN_GETMAD($2,$$,'(');
TOKEN_GETMAD($4,$$,')');
;
/* Basic list expressions */
-listexpr: /* NULL */ %prec PREC_LOW
+optlistexpr: /* NULL */ %prec PREC_LOW
{ $$ = (OP*)NULL; }
- | argexpr %prec PREC_LOW
+ | listexpr %prec PREC_LOW
{ $$ = $1; }
;
-listexprcom: /* NULL */
+optexpr: /* NULL */
{ $$ = (OP*)NULL; }
| expr
{ $$ = $1; }
| scalar %prec PREC_LOW
{ $$ = scalar($1); }
| block
- { $$ = scope($1); }
+ { $$ = op_scope($1); }
| PRIVATEREF
{ $$ = $1; }
https://perl5.git.perl.org / perl5.git / blobdiff