* to run regen_perly.pl, which re-creates the files perly.h, perly.tab
* and perly.act which are derived from this.
*
- * Note that these derived files are included and compiled twice; once
- * from perly.c, and once from madly.c. The second time, a number of MAD
- * macros are defined, which compile in extra code that allows the parse
- * tree to be accurately dumped. In particular:
- *
- * MAD defined if compiling madly.c
- * DO_MAD(A) expands to A under madly.c, to null otherwise
- * IF_MAD(a,b) expands to A under madly.c, to B otherwise
- * TOKEN_GETMAD() expands to token_getmad() under madly.c, to null otherwise
- * TOKEN_FREE() similarly
- * OP_GETMAD() similarly
- * IVAL(i) expands to (i)->tk_lval.ival or (i)
- * PVAL(p) expands to (p)->tk_lval.pval or (p)
- *
- * The main job of of this grammar is to call the various newFOO()
+ * The main job of this grammar is to call the various newFOO()
* functions in op.c to build a syntax tree of OP structs.
* It relies on the lexer in toke.c to do the tokenizing.
*
/* Make the parser re-entrant. */
-%pure_parser
-
-/* FIXME for MAD - is the new mintro on while and until important? */
+%define api.pure
%start grammar
char *pval;
OP *opval;
GV *gvval;
-#ifdef PERL_IN_MADLY_C
- TOKEN* p_tkval;
- TOKEN* i_tkval;
-#else
- char *p_tkval;
- I32 i_tkval;
-#endif
-#ifdef PERL_MAD
- TOKEN* tkval;
-#endif
}
-%token <ival> GRAMPROG GRAMEXPR GRAMBLOCK GRAMBARESTMT GRAMFULLSTMT GRAMSTMTSEQ
+%token <ival> GRAMPROG GRAMEXPR GRAMBLOCK GRAMBARESTMT GRAMFULLSTMT GRAMSTMTSEQ GRAMSUBSIGNATURE
-%token <i_tkval> '{' '}' '[' ']' '-' '+' '$' '@' '%' '*' '&' ';'
+%token <ival> '[' ']' '-' '+' '@' '%' '&' '=' '.'
+%token <ival> PERLY_BRACE_OPEN
+%token <ival> PERLY_BRACE_CLOSE
-%token <opval> WORD METHOD FUNCMETH THING PMFUNC PRIVATEREF QWLIST
+%token <opval> BAREWORD METHOD FUNCMETH THING PMFUNC PRIVATEREF QWLIST
%token <opval> FUNC0OP FUNC0SUB UNIOPSUB LSTOPSUB
%token <opval> PLUGEXPR PLUGSTMT
-%token <p_tkval> LABEL
-%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 YADAYADA
-%token <i_tkval> FUNC0 FUNC1 FUNC UNIOP LSTOP
-%token <i_tkval> RELOP EQOP MULOP ADDOP
-%token <i_tkval> DOLSHARP DO HASHBRACK NOAMP
-%token <i_tkval> LOCAL MY MYSUB REQUIRE
-%token <i_tkval> COLONATTR
+%token <opval> LABEL
+%token <ival> FORMAT SUB SIGSUB ANONSUB ANON_SIGSUB PACKAGE USE
+%token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE FOR
+%token <ival> GIVEN WHEN DEFAULT
+%token <ival> LOOPEX DOTDOT YADAYADA
+%token <ival> FUNC0 FUNC1 FUNC UNIOP LSTOP
+%token <ival> MULOP ADDOP
+%token <ival> DOLSHARP DO HASHBRACK NOAMP
+%token <ival> LOCAL MY REQUIRE
+%token <ival> COLONATTR FORMLBRACK FORMRBRACK
+%token <ival> SUBLEXSTART SUBLEXEND
%type <ival> grammar remember mremember
%type <ival> startsub startanonsub startformsub
-/* FIXME for MAD - are these two ival? */
+
%type <ival> mintro
%type <opval> stmtseq fullstmt labfullstmt barestmt block mblock else
%type <opval> expr term subscripted scalar ary hsh arylen star amper sideff
-%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> condition
+%type <opval> sliceme kvslice gelem
+%type <opval> listexpr nexpr texpr iexpr mexpr mnexpr
+%type <opval> optlistexpr optexpr optrepl indirob listop method
+%type <opval> formname subname proto cont my_scalar my_var
+%type <opval> refgen_topic formblock
%type <opval> subattrlist myattrlist myattrterm myterm
%type <opval> termbinop termunop anonymous termdo
-
-%nonassoc <i_tkval> PREC_LOW
+%type <opval> termrelop relopchain termeqop eqopchain
+%type <ival> sigslurpsigil
+%type <opval> sigvarname sigdefault sigscalarelem sigslurpelem
+%type <opval> sigelem siglist siglistornull subsigguts subsignature optsubsignature
+%type <opval> subbody optsubbody sigsubbody optsigsubbody
+%type <opval> formstmtseq formline formarg
+
+%nonassoc <ival> PREC_LOW
%nonassoc LOOPEX
-%left <i_tkval> OROP DOROP
-%left <i_tkval> ANDOP
-%right <i_tkval> NOTOP
+%left <ival> OROP DOROP
+%left <ival> ANDOP
+%right <ival> NOTOP
%nonassoc LSTOP LSTOPSUB
-%left <i_tkval> ','
-%right <i_tkval> ASSIGNOP
-%right <i_tkval> '?' ':'
-%nonassoc DOTDOT YADAYADA
-%left <i_tkval> OROR DORDOR
-%left <i_tkval> ANDAND
-%left <i_tkval> BITOROP
-%left <i_tkval> BITANDOP
-%nonassoc EQOP
-%nonassoc RELOP
+%left <ival> ','
+%right <ival> ASSIGNOP
+%right <ival> '?' ':'
+%nonassoc DOTDOT
+%left <ival> OROR DORDOR
+%left <ival> ANDAND
+%left <ival> BITOROP
+%left <ival> BITANDOP
+%left <ival> CHEQOP NCEQOP
+%left <ival> CHRELOP NCRELOP
%nonassoc UNIOP UNIOPSUB
%nonassoc REQUIRE
-%left <i_tkval> SHIFTOP
+%left <ival> SHIFTOP
%left ADDOP
%left MULOP
-%left <i_tkval> MATCHOP
-%right <i_tkval> '!' '~' UMINUS REFGEN
-%right <i_tkval> POWOP
-%nonassoc <i_tkval> PREINC PREDEC POSTINC POSTDEC
-%left <i_tkval> ARROW
-%nonassoc <i_tkval> ')'
-%left <i_tkval> '('
-%left '[' '{'
-
-%token <i_tkval> PEG
+%left <ival> MATCHOP
+%right <ival> '!' '~' UMINUS REFGEN
+%right <ival> POWOP
+%nonassoc <ival> PREINC PREDEC POSTINC POSTDEC POSTJOIN
+%left <ival> ARROW
+%nonassoc <ival> ')'
+%left <ival> '('
+%left '[' PERLY_BRACE_OPEN
%% /* RULES */
/* Top-level choice of what kind of thing yyparse was called to parse */
grammar : GRAMPROG
{
- PL_parser->expect = XSTATE;
+ parser->expect = XSTATE;
+ $<ival>$ = 0;
}
remember stmtseq
{
- newPROG(block_end($3,$4));
+ newPROG(block_end($remember,$stmtseq));
+ PL_compiling.cop_seq = 0;
$$ = 0;
}
| GRAMEXPR
{
parser->expect = XTERM;
+ $<ival>$ = 0;
}
optexpr
{
- PL_eval_root = $3;
+ PL_eval_root = $optexpr;
$$ = 0;
}
| GRAMBLOCK
{
parser->expect = XBLOCK;
+ $<ival>$ = 0;
}
block
{
PL_pad_reset_pending = TRUE;
- PL_eval_root = $3;
+ PL_eval_root = $block;
$$ = 0;
yyunlex();
- parser->yychar = YYEOF;
+ parser->yychar = yytoken = YYEOF;
}
| GRAMBARESTMT
{
parser->expect = XSTATE;
+ $<ival>$ = 0;
}
barestmt
{
PL_pad_reset_pending = TRUE;
- PL_eval_root = $3;
+ PL_eval_root = $barestmt;
$$ = 0;
yyunlex();
- parser->yychar = YYEOF;
+ parser->yychar = yytoken = YYEOF;
}
| GRAMFULLSTMT
{
parser->expect = XSTATE;
+ $<ival>$ = 0;
}
fullstmt
{
PL_pad_reset_pending = TRUE;
- PL_eval_root = $3;
+ PL_eval_root = $fullstmt;
$$ = 0;
yyunlex();
- parser->yychar = YYEOF;
+ parser->yychar = yytoken = YYEOF;
}
| GRAMSTMTSEQ
{
parser->expect = XSTATE;
+ $<ival>$ = 0;
}
stmtseq
{
- PL_eval_root = $3;
+ PL_eval_root = $stmtseq;
+ $$ = 0;
+ }
+ | GRAMSUBSIGNATURE
+ {
+ parser->expect = XSTATE;
+ $<ival>$ = 0;
+ }
+ subsigguts
+ {
+ PL_eval_root = $subsigguts;
$$ = 0;
}
;
/* An ordinary block */
-block : '{' remember stmtseq '}'
- { if (PL_parser->copline > (line_t)IVAL($1))
- PL_parser->copline = (line_t)IVAL($1);
- $$ = block_end($2, $3);
- TOKEN_GETMAD($1,$$,'{');
- TOKEN_GETMAD($4,$$,'}');
+block : PERLY_BRACE_OPEN remember stmtseq PERLY_BRACE_CLOSE
+ { if (parser->copline > (line_t)$PERLY_BRACE_OPEN)
+ parser->copline = (line_t)$PERLY_BRACE_OPEN;
+ $$ = block_end($remember, $stmtseq);
+ }
+ ;
+
+/* format body */
+formblock: '=' remember ';' FORMRBRACK formstmtseq ';' '.'
+ { if (parser->copline > (line_t)$1)
+ parser->copline = (line_t)$1;
+ $$ = block_end($remember, $formstmtseq);
}
;
remember: /* NULL */ /* start a full lexical scope */
- { $$ = block_start(TRUE); }
+ { $$ = block_start(TRUE);
+ parser->parsed_sub = 0; }
;
-mblock : '{' mremember stmtseq '}'
- { if (PL_parser->copline > (line_t)IVAL($1))
- PL_parser->copline = (line_t)IVAL($1);
- $$ = block_end($2, $3);
- TOKEN_GETMAD($1,$$,'{');
- TOKEN_GETMAD($4,$$,'}');
+mblock : PERLY_BRACE_OPEN mremember stmtseq PERLY_BRACE_CLOSE
+ { if (parser->copline > (line_t)$PERLY_BRACE_OPEN)
+ parser->copline = (line_t)$PERLY_BRACE_OPEN;
+ $$ = block_end($mremember, $stmtseq);
}
;
mremember: /* NULL */ /* start a partial lexical scope */
- { $$ = block_start(FALSE); }
+ { $$ = block_start(FALSE);
+ parser->parsed_sub = 0; }
;
/* A sequence of statements in the program */
stmtseq : /* NULL */
- { $$ = (OP*)NULL; }
- | stmtseq fullstmt
- { $$ = op_append_list(OP_LINESEQ, $1, $2);
+ { $$ = NULL; }
+ | stmtseq[list] fullstmt
+ { $$ = op_append_list(OP_LINESEQ, $list, $fullstmt);
+ PL_pad_reset_pending = TRUE;
+ if ($list && $fullstmt)
+ PL_hints |= HINT_BLOCK_SCOPE;
+ }
+ ;
+
+/* A sequence of format lines */
+formstmtseq: /* NULL */
+ { $$ = NULL; }
+ | formstmtseq[list] formline
+ { $$ = op_append_list(OP_LINESEQ, $list, $formline);
PL_pad_reset_pending = TRUE;
- if ($1 && $2)
+ if ($list && $formline)
PL_hints |= HINT_BLOCK_SCOPE;
}
;
/* A statement in the program, including optional labels */
fullstmt: barestmt
{
- if($1) {
- $$ = newSTATEOP(0, NULL, $1);
- } else {
- $$ = IF_MAD(newOP(OP_NULL, 0), NULL);
- }
+ $$ = $barestmt ? newSTATEOP(0, NULL, $barestmt) : NULL;
}
| labfullstmt
- { $$ = $1; }
+ { $$ = $labfullstmt; }
;
labfullstmt: LABEL barestmt
{
- $$ = newSTATEOP(SvUTF8(((SVOP*)$1)->op_sv),
- savepv(SvPVX(((SVOP*)$1)->op_sv)), $2);
- TOKEN_GETMAD($1,
- $2 ? cLISTOPx($$)->op_first : $$, 'L');
+ SV *label = cSVOPx_sv($LABEL);
+ $$ = newSTATEOP(SvFLAGS(label) & SVf_UTF8,
+ savepv(SvPVX_const(label)), $barestmt);
+ op_free($LABEL);
}
- | LABEL labfullstmt
+ | LABEL labfullstmt[list]
{
- $$ = newSTATEOP(SvUTF8(((SVOP*)$1)->op_sv),
- savepv(SvPVX(((SVOP*)$1)->op_sv)), $2);
- TOKEN_GETMAD($1, cLISTOPx($$)->op_first, 'L');
+ SV *label = cSVOPx_sv($LABEL);
+ $$ = newSTATEOP(SvFLAGS(label) & SVf_UTF8,
+ savepv(SvPVX_const(label)), $list);
+ op_free($LABEL);
}
;
/* A bare statement, lacking label and other aspects of state op */
barestmt: PLUGSTMT
- { $$ = $1; }
- | PEG
- {
- $$ = newOP(OP_NULL,0);
- TOKEN_GETMAD($1,$$,'p');
- }
- | FORMAT startformsub formname block
+ { $$ = $PLUGSTMT; }
+ | FORMAT startformsub formname formblock
{
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);
- $$ = (OP*)NULL;
-#endif
+ newFORM($startformsub, $formname, $formblock);
+ $$ = NULL;
if (CvOUTSIDE(fmtcv) && !CvEVAL(CvOUTSIDE(fmtcv))) {
- SvREFCNT_inc_simple_void(fmtcv);
- pad_add_anon(fmtcv, OP_NULL);
+ pad_add_weakref(fmtcv);
}
+ parser->parsed_sub = 1;
+ }
+ | SUB subname startsub
+ /* sub declaration or definition not within scope
+ of 'use feature "signatures"'*/
+ {
+ init_named_cv(PL_compcv, $subname);
+ parser->in_my = 0;
+ parser->in_my_stash = NULL;
}
- | SUB startsub subname proto subattrlist subbody
+ proto subattrlist optsubbody
{
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
+ $subname->op_type == OP_CONST
+ ? newATTRSUB($startsub, $subname, $proto, $subattrlist, $optsubbody)
+ : newMYSUB($startsub, $subname, $proto, $subattrlist, $optsubbody)
+ ;
+ $$ = NULL;
+ intro_my();
+ parser->parsed_sub = 1;
+ }
+ | SIGSUB subname startsub
+ /* sub declaration or definition under 'use feature
+ * "signatures"'. (Note that a signature isn't
+ * allowed in a declaration)
+ */
+ {
+ init_named_cv(PL_compcv, $subname);
+ parser->in_my = 0;
+ parser->in_my_stash = NULL;
}
- | MYSUB startsub subname proto subattrlist subbody
+ subattrlist optsigsubbody
{
- /* Unimplemented "my sub foo { }" */
SvREFCNT_inc_simple_void(PL_compcv);
-#ifdef MAD
- $$ = newMYSUB($2, $3, $4, $5, $6);
- token_getmad($1,$$,'d');
-#else
- newMYSUB($2, $3, $4, $5, $6);
- $$ = (OP*)NULL;
-#endif
- }
- | PACKAGE WORD WORD ';'
+ $subname->op_type == OP_CONST
+ ? newATTRSUB($startsub, $subname, NULL, $subattrlist, $optsigsubbody)
+ : newMYSUB( $startsub, $subname, NULL, $subattrlist, $optsigsubbody)
+ ;
+ $$ = NULL;
+ intro_my();
+ parser->parsed_sub = 1;
+ }
+ | PACKAGE BAREWORD[version] BAREWORD[package] ';'
{
-#ifdef MAD
- $$ = package($3);
- token_getmad($1,$$,'o');
- if ($2)
- package_version($2);
- token_getmad($4,$$,';');
-#else
- package($3);
- if ($2)
- package_version($2);
- $$ = (OP*)NULL;
-#endif
+ package($package);
+ if ($version)
+ package_version($version);
+ $$ = NULL;
}
| USE startsub
{ CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
- WORD WORD optlistexpr ';'
+ BAREWORD[version] BAREWORD[module] 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);
- $$ = (OP*)NULL;
-#endif
+ utilize($USE, $startsub, $version, $module, $optlistexpr);
+ parser->parsed_sub = 1;
+ $$ = NULL;
}
| IF '(' 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 '(' remember miexpr ')' mblock else
+ $$ = block_end($remember,
+ newCONDOP(0, $mexpr, op_scope($mblock), $else));
+ parser->copline = (line_t)$IF;
+ }
+ | UNLESS '(' remember mexpr ')' mblock else
{
- $$ = block_end($3,
- newCONDOP(0, $4, op_scope($6), $7));
- TOKEN_GETMAD($1,$$,'I');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- PL_parser->copline = (line_t)IVAL($1);
+ $$ = block_end($remember,
+ newCONDOP(0, $mexpr, $else, op_scope($mblock)));
+ parser->copline = (line_t)$UNLESS;
}
| GIVEN '(' remember mexpr ')' mblock
{
- const PADOFFSET offset = pad_findmy_pvs("$_", 0);
- $$ = block_end($3,
- newGIVENOP($4, op_scope($6),
- offset == NOT_IN_PAD
- || PAD_COMPNAME_FLAGS_isOUR(offset)
- ? 0
- : offset));
- PL_parser->copline = (line_t)IVAL($1);
+ $$ = block_end($remember, newGIVENOP($mexpr, op_scope($mblock), 0));
+ parser->copline = (line_t)$GIVEN;
}
| WHEN '(' remember mexpr ')' mblock
- { $$ = block_end($3, newWHENOP($4, op_scope($6))); }
+ { $$ = block_end($remember, newWHENOP($mexpr, op_scope($mblock))); }
| DEFAULT block
- { $$ = newWHENOP(0, op_scope($2)); }
+ { $$ = newWHENOP(0, op_scope($block)); }
| WHILE '(' 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);
+ $$ = block_end($remember,
+ newWHILEOP(0, 1, NULL,
+ $texpr, $mblock, $cont, $mintro));
+ parser->copline = (line_t)$WHILE;
}
| UNTIL '(' remember iexpr ')' mintro mblock cont
{
- $$ = block_end($3,
- newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- $4, $7, $8, $6));
- TOKEN_GETMAD($1,$$,'W');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- PL_parser->copline = (line_t)IVAL($1);
- }
- | FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')'
+ $$ = block_end($remember,
+ newWHILEOP(0, 1, NULL,
+ $iexpr, $mblock, $cont, $mintro));
+ parser->copline = (line_t)$UNTIL;
+ }
+ | FOR '(' remember mnexpr[init_mnexpr] ';'
+ { parser->expect = XTERM; }
+ texpr ';'
+ { parser->expect = XTERM; }
+ mintro mnexpr[iterate_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);
+ OP *initop = $init_mnexpr;
+ OP *forop = newWHILEOP(0, 1, NULL,
+ scalar($texpr), $mblock, $iterate_mnexpr, $mintro);
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);
+ PL_hints |= HINT_BLOCK_SCOPE;
+ $$ = block_end($remember, forop);
+ parser->copline = (line_t)$FOR;
}
| FOR MY remember my_scalar '(' mexpr ')' mblock cont
{
- $$ = 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);
+ $$ = block_end($remember, newFOROP(0, $my_scalar, $mexpr, $mblock, $cont));
+ parser->copline = (line_t)$FOR;
}
| FOR scalar '(' remember mexpr ')' mblock cont
{
- $$ = block_end($4, newFOROP(0,
- op_lvalue($2, OP_ENTERLOOP), $5, $7, $8));
- TOKEN_GETMAD($1,$$,'W');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($6,$$,')');
- PL_parser->copline = (line_t)IVAL($1);
+ $$ = block_end($remember, newFOROP(0,
+ op_lvalue($scalar, OP_ENTERLOOP), $mexpr, $mblock, $cont));
+ parser->copline = (line_t)$FOR;
+ }
+ | FOR my_refgen remember my_var
+ { parser->in_my = 0; $<opval>$ = my($my_var); }[variable]
+ '(' mexpr ')' mblock cont
+ {
+ $$ = block_end(
+ $remember,
+ newFOROP(0,
+ op_lvalue(
+ newUNOP(OP_REFGEN, 0,
+ $<opval>variable),
+ OP_ENTERLOOP),
+ $mexpr, $mblock, $cont)
+ );
+ parser->copline = (line_t)$FOR;
+ }
+ | FOR REFGEN refgen_topic '(' remember mexpr ')' mblock cont
+ {
+ $$ = block_end($remember, newFOROP(
+ 0, op_lvalue(newUNOP(OP_REFGEN, 0,
+ $refgen_topic),
+ OP_ENTERLOOP), $mexpr, $mblock, $cont));
+ parser->copline = (line_t)$FOR;
}
| FOR '(' 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);
+ $$ = block_end($remember,
+ newFOROP(0, NULL, $mexpr, $mblock, $cont));
+ parser->copline = (line_t)$FOR;
}
| block cont
{
/* a block is a loop that happens once */
- $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- (OP*)NULL, $1, $2, 0);
+ $$ = newWHILEOP(0, 1, NULL,
+ NULL, $block, $cont, 0);
}
- | PACKAGE WORD WORD '{' remember
+ | PACKAGE BAREWORD[version] BAREWORD[package] PERLY_BRACE_OPEN remember
{
- package($3);
- if ($2) {
- package_version($2);
+ package($package);
+ if ($version) {
+ package_version($version);
}
}
- stmtseq '}'
+ stmtseq PERLY_BRACE_CLOSE
{
/* a block is a loop that happens once */
- $$ = newWHILEOP(0, 1, (LOOP*)(OP*)NULL,
- (OP*)NULL, block_end($5, $7), (OP*)NULL, 0);
- TOKEN_GETMAD($4,$$,'{');
- TOKEN_GETMAD($8,$$,'}');
- if (PL_parser->copline > (line_t)IVAL($4))
- PL_parser->copline = (line_t)IVAL($4);
+ $$ = newWHILEOP(0, 1, NULL,
+ NULL, block_end($remember, $stmtseq), NULL, 0);
+ if (parser->copline > (line_t)$PERLY_BRACE_OPEN)
+ parser->copline = (line_t)$PERLY_BRACE_OPEN;
}
| sideff ';'
{
- PL_parser->expect = XSTATE;
- $$ = $1;
- TOKEN_GETMAD($2,$$,';');
+ $$ = $sideff;
+ }
+ | YADAYADA ';'
+ {
+ $$ = newLISTOP(OP_DIE, 0, newOP(OP_PUSHMARK, 0),
+ newSVOP(OP_CONST, 0, newSVpvs("Unimplemented")));
}
| ';'
{
- PL_parser->expect = XSTATE;
- $$ = IF_MAD(newOP(OP_NULL, 0), (OP*)NULL);
- TOKEN_GETMAD($1,$$,';');
- PL_parser->copline = NOLINE;
+ $$ = NULL;
+ parser->copline = NOLINE;
}
;
+/* Format line */
+formline: THING formarg
+ { OP *list;
+ if ($formarg) {
+ OP *term = $formarg;
+ list = op_append_elem(OP_LIST, $THING, term);
+ }
+ else {
+ list = $THING;
+ }
+ if (parser->copline == NOLINE)
+ parser->copline = CopLINE(PL_curcop)-1;
+ else parser->copline--;
+ $$ = newSTATEOP(0, NULL,
+ op_convert_list(OP_FORMLINE, 0, list));
+ }
+ ;
+
+formarg : /* NULL */
+ { $$ = NULL; }
+ | FORMLBRACK stmtseq FORMRBRACK
+ { $$ = op_unscope($stmtseq); }
+ ;
+
+condition: expr
+;
+
/* An expression which may have a side-effect */
sideff : error
- { $$ = (OP*)NULL; }
- | expr
- { $$ = $1; }
- | expr IF expr
- { $$ = newLOGOP(OP_AND, 0, $3, $1);
- TOKEN_GETMAD($2,$$,'i');
- }
- | expr UNLESS expr
- { $$ = newLOGOP(OP_OR, 0, $3, $1);
- TOKEN_GETMAD($2,$$,'i');
- }
- | expr WHILE expr
- { $$ = newLOOPOP(OPf_PARENS, 1, scalar($3), $1);
- TOKEN_GETMAD($2,$$,'w');
- }
- | expr UNTIL iexpr
- { $$ = newLOOPOP(OPf_PARENS, 1, $3, $1);
- TOKEN_GETMAD($2,$$,'w');
- }
- | expr FOR expr
- { $$ = newFOROP(0, (OP*)NULL, $3, $1, (OP*)NULL);
- TOKEN_GETMAD($2,$$,'w');
- PL_parser->copline = (line_t)IVAL($2);
- }
- | expr WHEN expr
- { $$ = newWHENOP($3, op_scope($1)); }
+ { $$ = NULL; }
+ | expr[body]
+ { $$ = $body; }
+ | expr[body] IF condition
+ { $$ = newLOGOP(OP_AND, 0, $condition, $body); }
+ | expr[body] UNLESS condition
+ { $$ = newLOGOP(OP_OR, 0, $condition, $body); }
+ | expr[body] WHILE condition
+ { $$ = newLOOPOP(OPf_PARENS, 1, scalar($condition), $body); }
+ | expr[body] UNTIL iexpr
+ { $$ = newLOOPOP(OPf_PARENS, 1, $iexpr, $body); }
+ | expr[body] FOR condition
+ { $$ = newFOROP(0, NULL, $condition, $body, NULL);
+ parser->copline = (line_t)$FOR; }
+ | expr[body] WHEN condition
+ { $$ = newWHENOP($condition, op_scope($body)); }
;
/* else and elsif blocks */
else : /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| ELSE mblock
{
- ($2)->op_flags |= OPf_PARENS;
- $$ = op_scope($2);
- TOKEN_GETMAD($1,$$,'o');
+ ($mblock)->op_flags |= OPf_PARENS;
+ $$ = op_scope($mblock);
}
- | ELSIF '(' mexpr ')' mblock else
- { PL_parser->copline = (line_t)IVAL($1);
+ | ELSIF '(' mexpr ')' mblock else[else.recurse]
+ { parser->copline = (line_t)$ELSIF;
$$ = newCONDOP(0,
- newSTATEOP(OPf_SPECIAL,NULL,$3),
- op_scope($5), $6);
+ newSTATEOP(OPf_SPECIAL,NULL,$mexpr),
+ op_scope($mblock), $[else.recurse]);
PL_hints |= HINT_BLOCK_SCOPE;
- TOKEN_GETMAD($1,$$,'I');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($4,$$,')');
}
;
/* Continue blocks */
cont : /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| CONTINUE block
- {
- $$ = op_scope($2);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = op_scope($block); }
;
/* determine whether there are any new my declarations */
/* Normal expression */
nexpr : /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| sideff
;
/* Inverted boolean expression */
iexpr : expr
- { $$ = invert(scalar($1)); }
+ { $$ = invert(scalar($expr)); }
;
/* Expression with its own lexical scope */
mexpr : expr
- { $$ = $1; intro_my(); }
+ { $$ = $expr; intro_my(); }
;
mnexpr : nexpr
- { $$ = $1; intro_my(); }
- ;
-
-miexpr : iexpr
- { $$ = $1; intro_my(); }
+ { $$ = $nexpr; intro_my(); }
;
-formname: WORD { $$ = $1; }
- | /* NULL */ { $$ = (OP*)NULL; }
+formname: BAREWORD { $$ = $BAREWORD; }
+ | /* NULL */ { $$ = NULL; }
;
startsub: /* NULL */ /* start a regular subroutine scope */
;
/* Name of a subroutine - must be a bareword, could be special */
-subname : WORD { const char *const name = SvPV_nolen_const(((SVOP*)$1)->op_sv);
- if (strEQ(name, "BEGIN") || strEQ(name, "END")
- || strEQ(name, "INIT") || strEQ(name, "CHECK")
- || strEQ(name, "UNITCHECK"))
- CvSPECIAL_on(PL_compcv);
- $$ = $1; }
+subname : BAREWORD
+ | PRIVATEREF
;
/* Subroutine prototype */
proto : /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| THING
;
/* Optional list of subroutine attributes */
subattrlist: /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| COLONATTR THING
- { $$ = $2;
- TOKEN_GETMAD($1,$$,':');
- }
+ { $$ = $THING; }
| COLONATTR
- { $$ = IF_MAD(
- newOP(OP_NULL, 0),
- (OP*)NULL
- );
- TOKEN_GETMAD($1,$$,':');
- }
+ { $$ = NULL; }
;
/* List of attributes for a "my" variable declaration */
myattrlist: COLONATTR THING
- { $$ = $2;
- TOKEN_GETMAD($1,$$,':');
- }
+ { $$ = $THING; }
| COLONATTR
- { $$ = IF_MAD(
- newOP(OP_NULL, 0),
- (OP*)NULL
- );
- TOKEN_GETMAD($1,$$,':');
- }
+ { $$ = NULL; }
;
-/* Subroutine body - either null or a block */
-subbody : block { $$ = $1; }
- | ';' { $$ = IF_MAD(
- newOP(OP_NULL,0),
- (OP*)NULL
- );
- PL_parser->expect = XSTATE;
- TOKEN_GETMAD($1,$$,';');
- }
+
+
+/* --------------------------------------
+ * subroutine signature parsing
+ */
+
+/* the '' or 'foo' part of a '$' or '@foo' etc signature variable */
+sigvarname: /* NULL */
+ { parser->in_my = 0; $$ = NULL; }
+ | PRIVATEREF
+ { parser->in_my = 0; $$ = $PRIVATEREF; }
;
-/* Ordinary expressions; logical combinations */
-expr : expr ANDOP expr
- { $$ = newLOGOP(OP_AND, 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
+sigslurpsigil:
+ '@'
+ { $$ = '@'; }
+ | '%'
+ { $$ = '%'; }
+
+/* @, %, @foo, %foo */
+sigslurpelem: sigslurpsigil sigvarname sigdefault/* def only to catch errors */
+ {
+ I32 sigil = $sigslurpsigil;
+ OP *var = $sigvarname;
+ OP *defexpr = $sigdefault;
+
+ if (parser->sig_slurpy)
+ yyerror("Multiple slurpy parameters not allowed");
+ parser->sig_slurpy = (char)sigil;
+
+ if (defexpr)
+ yyerror("A slurpy parameter may not have "
+ "a default value");
+
+ $$ = var ? newSTATEOP(0, NULL, var) : NULL;
+ }
+ ;
+
+/* default part of sub signature scalar element: i.e. '= default_expr' */
+sigdefault: /* NULL */
+ { $$ = NULL; }
+ | ASSIGNOP
+ { $$ = newOP(OP_NULL, 0); }
+ | ASSIGNOP term
+ { $$ = $term; }
+
+
+/* subroutine signature scalar element: e.g. '$x', '$=', '$x = $default' */
+sigscalarelem:
+ '$' sigvarname sigdefault
+ {
+ OP *var = $sigvarname;
+ OP *defexpr = $sigdefault;
+
+ if (parser->sig_slurpy)
+ yyerror("Slurpy parameter not last");
+
+ parser->sig_elems++;
+
+ if (defexpr) {
+ parser->sig_optelems++;
+
+ if ( defexpr->op_type == OP_NULL
+ && !(defexpr->op_flags & OPf_KIDS))
+ {
+ /* handle '$=' special case */
+ if (var)
+ yyerror("Optional parameter "
+ "lacks default expression");
+ op_free(defexpr);
+ }
+ else {
+ /* a normal '=default' expression */
+ OP *defop = (OP*)alloc_LOGOP(OP_ARGDEFELEM,
+ defexpr,
+ LINKLIST(defexpr));
+ /* re-purpose op_targ to hold @_ index */
+ defop->op_targ =
+ (PADOFFSET)(parser->sig_elems - 1);
+
+ if (var) {
+ var->op_flags |= OPf_STACKED;
+ (void)op_sibling_splice(var,
+ NULL, 0, defop);
+ scalar(defop);
+ }
+ else
+ var = newUNOP(OP_NULL, 0, defop);
+
+ LINKLIST(var);
+ /* NB: normally the first child of a
+ * logop is executed before the logop,
+ * and it pushes a boolean result
+ * ready for the logop. For ARGDEFELEM,
+ * the op itself does the boolean
+ * calculation, so set the first op to
+ * it instead.
+ */
+ var->op_next = defop;
+ defexpr->op_next = var;
+ }
+ }
+ else {
+ if (parser->sig_optelems)
+ yyerror("Mandatory parameter "
+ "follows optional parameter");
+ }
+
+ $$ = var ? newSTATEOP(0, NULL, var) : NULL;
+ }
+ ;
+
+
+/* subroutine signature element: e.g. '$x = $default' or '%h' */
+sigelem: sigscalarelem
+ { parser->in_my = KEY_sigvar; $$ = $sigscalarelem; }
+ | sigslurpelem
+ { parser->in_my = KEY_sigvar; $$ = $sigslurpelem; }
+ ;
+
+/* list of subroutine signature elements */
+siglist:
+ siglist[list] ','
+ { $$ = $list; }
+ | siglist[list] ',' sigelem[element]
+ {
+ $$ = op_append_list(OP_LINESEQ, $list, $element);
}
- | expr OROP expr
- { $$ = newLOGOP(IVAL($2), 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
+ | sigelem[element] %prec PREC_LOW
+ { $$ = $element; }
+ ;
+
+/* () or (....) */
+siglistornull: /* NULL */
+ { $$ = NULL; }
+ | siglist
+ { $$ = $siglist; }
+
+/* optional subroutine signature */
+optsubsignature: /* NULL */
+ { $$ = NULL; }
+ | subsignature
+ { $$ = $subsignature; }
+
+/* Subroutine signature */
+subsignature: '(' subsigguts ')'
+ { $$ = $subsigguts; }
+
+subsigguts:
+ {
+ ENTER;
+ SAVEIV(parser->sig_elems);
+ SAVEIV(parser->sig_optelems);
+ SAVEI8(parser->sig_slurpy);
+ parser->sig_elems = 0;
+ parser->sig_optelems = 0;
+ parser->sig_slurpy = 0;
+ parser->in_my = KEY_sigvar;
+ }
+ siglistornull
+ {
+ OP *sigops = $siglistornull;
+ struct op_argcheck_aux *aux;
+ OP *check;
+
+ if (!FEATURE_SIGNATURES_IS_ENABLED)
+ Perl_croak(aTHX_ "Experimental "
+ "subroutine signatures not enabled");
+
+ /* We shouldn't get here otherwise */
+ Perl_ck_warner_d(aTHX_
+ packWARN(WARN_EXPERIMENTAL__SIGNATURES),
+ "The signatures feature is experimental");
+
+ aux = (struct op_argcheck_aux*)
+ PerlMemShared_malloc(
+ sizeof(struct op_argcheck_aux));
+ aux->params = parser->sig_elems;
+ aux->opt_params = parser->sig_optelems;
+ aux->slurpy = parser->sig_slurpy;
+ check = newUNOP_AUX(OP_ARGCHECK, 0, NULL,
+ (UNOP_AUX_item *)aux);
+ sigops = op_prepend_elem(OP_LINESEQ, check, sigops);
+ sigops = op_prepend_elem(OP_LINESEQ,
+ newSTATEOP(0, NULL, NULL),
+ sigops);
+ /* a nextstate at the end handles context
+ * correctly for an empty sub body */
+ sigops = op_append_elem(OP_LINESEQ,
+ sigops,
+ newSTATEOP(0, NULL, NULL));
+ /* wrap the list of arg ops in a NULL aux op.
+ This serves two purposes. First, it makes
+ the arg list a separate subtree from the
+ body of the sub, and secondly the null op
+ may in future be upgraded to an OP_SIGNATURE
+ when implemented. For now leave it as
+ ex-argcheck */
+ $$ = newUNOP_AUX(OP_ARGCHECK, 0, sigops, NULL);
+ op_null($$);
+
+ parser->in_my = 0;
+ /* tell the toker that attrributes can follow
+ * this sig, but only so that the toker
+ * can skip through any (illegal) trailing
+ * attribute text then give a useful error
+ * message about "attributes before sig",
+ * rather than falling over ina mess at
+ * unrecognised syntax.
+ */
+ parser->expect = XATTRBLOCK;
+ parser->sig_seen = TRUE;
+ LEAVE;
}
- | expr DOROP expr
- { $$ = newLOGOP(OP_DOR, 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
+ ;
+
+/* Optional subroutine body (for named subroutine declaration) */
+optsubbody: subbody { $$ = $subbody; }
+ | ';' { $$ = NULL; }
+ ;
+
+
+/* Subroutine body (without signature) */
+subbody: remember PERLY_BRACE_OPEN stmtseq PERLY_BRACE_CLOSE
+ {
+ if (parser->copline > (line_t)$PERLY_BRACE_OPEN)
+ parser->copline = (line_t)$PERLY_BRACE_OPEN;
+ $$ = block_end($remember, $stmtseq);
}
+ ;
+
+
+/* optional [ Subroutine body with optional signature ] (for named
+ * subroutine declaration) */
+optsigsubbody: sigsubbody { $$ = $sigsubbody; }
+ | ';' { $$ = NULL; }
+
+/* Subroutine body with optional signature */
+sigsubbody: remember optsubsignature PERLY_BRACE_OPEN stmtseq PERLY_BRACE_CLOSE
+ {
+ if (parser->copline > (line_t)$PERLY_BRACE_OPEN)
+ parser->copline = (line_t)$PERLY_BRACE_OPEN;
+ $$ = block_end($remember,
+ op_append_list(OP_LINESEQ, $optsubsignature, $stmtseq));
+ }
+ ;
+
+
+/* Ordinary expressions; logical combinations */
+expr : expr[lhs] ANDOP expr[rhs]
+ { $$ = newLOGOP(OP_AND, 0, $lhs, $rhs); }
+ | expr[lhs] OROP[operator] expr[rhs]
+ { $$ = newLOGOP($operator, 0, $lhs, $rhs); }
+ | expr[lhs] DOROP expr[rhs]
+ { $$ = newLOGOP(OP_DOR, 0, $lhs, $rhs); }
| listexpr %prec PREC_LOW
;
/* Expressions are a list of terms joined by commas */
-listexpr: listexpr ','
+listexpr: listexpr[list] ','
+ { $$ = $list; }
+ | listexpr[list] ',' term
{
-#ifdef MAD
- OP* op = newNULLLIST();
- token_getmad($2,op,',');
- $$ = op_append_elem(OP_LIST, $1, op);
-#else
- $$ = $1;
-#endif
- }
- | listexpr ',' term
- {
- OP* term = $3;
- DO_MAD(
- term = newUNOP(OP_NULL, 0, term);
- token_getmad($2,term,',');
- )
- $$ = op_append_elem(OP_LIST, $1, term);
+ OP* term = $term;
+ $$ = op_append_elem(OP_LIST, $list, term);
}
| term %prec PREC_LOW
;
/* List operators */
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');
+ { $$ = op_convert_list($LSTOP, OPf_STACKED,
+ op_prepend_elem(OP_LIST, newGVREF($LSTOP,$indirob), $listexpr) );
}
| FUNC '(' indirob expr ')' /* print ($fh @args */
- { $$ = convert(IVAL($1), OPf_STACKED,
- op_prepend_elem(OP_LIST, newGVREF(IVAL($1),$3), $4) );
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($5,$$,')');
+ { $$ = op_convert_list($FUNC, OPf_STACKED,
+ op_prepend_elem(OP_LIST, newGVREF($FUNC,$indirob), $expr) );
}
| term ARROW method '(' optexpr ')' /* $foo->bar(list) */
- { $$ = convert(OP_ENTERSUB, OPf_STACKED,
+ { $$ = op_convert_list(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,$$,'A');
- TOKEN_GETMAD($4,$$,'(');
- TOKEN_GETMAD($6,$$,')');
+ op_prepend_elem(OP_LIST, scalar($term), $optexpr),
+ newMETHOP(OP_METHOD, 0, $method)));
}
| term ARROW method /* $foo->bar */
- { $$ = convert(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, scalar($1),
- newUNOP(OP_METHOD, 0, $3)));
- TOKEN_GETMAD($2,$$,'A');
+ { $$ = op_convert_list(OP_ENTERSUB, OPf_STACKED,
+ op_append_elem(OP_LIST, scalar($term),
+ newMETHOP(OP_METHOD, 0, $method)));
}
| METHOD indirob optlistexpr /* new Class @args */
- { $$ = convert(OP_ENTERSUB, OPf_STACKED,
+ { $$ = op_convert_list(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
- op_prepend_elem(OP_LIST, $2, $3),
- newUNOP(OP_METHOD, 0, $1)));
+ op_prepend_elem(OP_LIST, $indirob, $optlistexpr),
+ newMETHOP(OP_METHOD, 0, $METHOD)));
}
| FUNCMETH indirob '(' optexpr ')' /* method $object (@args) */
- { $$ = convert(OP_ENTERSUB, OPf_STACKED,
+ { $$ = op_convert_list(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
- op_prepend_elem(OP_LIST, $2, $4),
- newUNOP(OP_METHOD, 0, $1)));
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
+ op_prepend_elem(OP_LIST, $indirob, $optexpr),
+ newMETHOP(OP_METHOD, 0, $FUNCMETH)));
}
| LSTOP optlistexpr /* print @args */
- { $$ = convert(IVAL($1), 0, $2);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = op_convert_list($LSTOP, 0, $optlistexpr); }
| FUNC '(' optexpr ')' /* print (@args) */
- { $$ = convert(IVAL($1), 0, $3);
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
+ { $$ = op_convert_list($FUNC, 0, $optexpr); }
+ | FUNC SUBLEXSTART optexpr SUBLEXEND /* uc($arg) from "\U..." */
+ { $$ = op_convert_list($FUNC, 0, $optexpr); }
| LSTOPSUB startanonsub block /* sub f(&@); f { foo } ... */
{ SvREFCNT_inc_simple_void(PL_compcv);
- $<opval>$ = newANONATTRSUB($2, 0, (OP*)NULL, $3); }
+ $<opval>$ = newANONATTRSUB($startanonsub, 0, NULL, $block); }[anonattrsub]
optlistexpr %prec LSTOP /* ... @bar */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
op_append_elem(OP_LIST,
- op_prepend_elem(OP_LIST, $<opval>4, $5), $1));
+ op_prepend_elem(OP_LIST, $<opval>anonattrsub, $optlistexpr), $LSTOPSUB));
}
;
;
/* Some kind of subscripted expression */
-subscripted: star '{' expr ';' '}' /* *main::{something} */
+subscripted: gelem PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* *main::{something} */
/* In this and all the hash accessors, ';' is
* provided by the tokeniser */
- { $$ = newBINOP(OP_GELEM, 0, $1, scalar($3));
- PL_parser->expect = XOPERATOR;
- TOKEN_GETMAD($2,$$,'{');
- TOKEN_GETMAD($4,$$,';');
- TOKEN_GETMAD($5,$$,'}');
- }
- | scalar '[' expr ']' /* $array[$element] */
- { $$ = newBINOP(OP_AELEM, 0, oopsAV($1), scalar($3));
- TOKEN_GETMAD($2,$$,'[');
- TOKEN_GETMAD($4,$$,']');
- }
- | term ARROW '[' expr ']' /* somearef->[$element] */
+ { $$ = newBINOP(OP_GELEM, 0, $gelem, scalar($expr)); }
+ | scalar[array] '[' expr ']' /* $array[$element] */
+ { $$ = newBINOP(OP_AELEM, 0, oopsAV($array), scalar($expr));
+ }
+ | term[array_reference] ARROW '[' expr ']' /* somearef->[$element] */
{ $$ = newBINOP(OP_AELEM, 0,
- ref(newAVREF($1),OP_RV2AV),
- scalar($4));
- TOKEN_GETMAD($2,$$,'a');
- TOKEN_GETMAD($3,$$,'[');
- TOKEN_GETMAD($5,$$,']');
+ ref(newAVREF($array_reference),OP_RV2AV),
+ scalar($expr));
}
- | subscripted '[' expr ']' /* $foo->[$bar]->[$baz] */
+ | subscripted[array_reference] '[' expr ']' /* $foo->[$bar]->[$baz] */
{ $$ = newBINOP(OP_AELEM, 0,
- ref(newAVREF($1),OP_RV2AV),
- scalar($3));
- TOKEN_GETMAD($2,$$,'[');
- TOKEN_GETMAD($4,$$,']');
- }
- | scalar '{' expr ';' '}' /* $foo{bar();} */
- { $$ = newBINOP(OP_HELEM, 0, oopsHV($1), jmaybe($3));
- PL_parser->expect = XOPERATOR;
- TOKEN_GETMAD($2,$$,'{');
- TOKEN_GETMAD($4,$$,';');
- TOKEN_GETMAD($5,$$,'}');
- }
- | term ARROW '{' expr ';' '}' /* somehref->{bar();} */
+ ref(newAVREF($array_reference),OP_RV2AV),
+ scalar($expr));
+ }
+ | scalar[hash] PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* $foo{bar();} */
+ { $$ = newBINOP(OP_HELEM, 0, oopsHV($hash), jmaybe($expr));
+ }
+ | term[hash_reference] ARROW PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* somehref->{bar();} */
{ $$ = newBINOP(OP_HELEM, 0,
- ref(newHVREF($1),OP_RV2HV),
- jmaybe($4));
- PL_parser->expect = XOPERATOR;
- TOKEN_GETMAD($2,$$,'a');
- TOKEN_GETMAD($3,$$,'{');
- TOKEN_GETMAD($5,$$,';');
- TOKEN_GETMAD($6,$$,'}');
- }
- | subscripted '{' expr ';' '}' /* $foo->[bar]->{baz;} */
+ ref(newHVREF($hash_reference),OP_RV2HV),
+ jmaybe($expr)); }
+ | subscripted[hash_reference] PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* $foo->[bar]->{baz;} */
{ $$ = newBINOP(OP_HELEM, 0,
- ref(newHVREF($1),OP_RV2HV),
- jmaybe($3));
- PL_parser->expect = XOPERATOR;
- TOKEN_GETMAD($2,$$,'{');
- TOKEN_GETMAD($4,$$,';');
- TOKEN_GETMAD($5,$$,'}');
- }
- | term ARROW '(' ')' /* $subref->() */
+ ref(newHVREF($hash_reference),OP_RV2HV),
+ jmaybe($expr)); }
+ | term[code_reference] ARROW '(' ')' /* $subref->() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- newCVREF(0, scalar($1)));
- TOKEN_GETMAD($2,$$,'a');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($4,$$,')');
+ newCVREF(0, scalar($code_reference)));
+ if (parser->expect == XBLOCK)
+ parser->expect = XOPERATOR;
}
- | term ARROW '(' expr ')' /* $subref->(@args) */
+ | term[code_reference] ARROW '(' expr ')' /* $subref->(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, $4,
- newCVREF(0, scalar($1))));
- TOKEN_GETMAD($2,$$,'a');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
+ op_append_elem(OP_LIST, $expr,
+ newCVREF(0, scalar($code_reference))));
+ if (parser->expect == XBLOCK)
+ parser->expect = XOPERATOR;
}
- | subscripted '(' expr ')' /* $foo->{bar}->(@args) */
+ | subscripted[code_reference] '(' expr ')' /* $foo->{bar}->(@args) */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, $3,
- newCVREF(0, scalar($1))));
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($4,$$,')');
+ op_append_elem(OP_LIST, $expr,
+ newCVREF(0, scalar($code_reference))));
+ if (parser->expect == XBLOCK)
+ parser->expect = XOPERATOR;
}
- | subscripted '(' ')' /* $foo->{bar}->() */
+ | subscripted[code_reference] '(' ')' /* $foo->{bar}->() */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- newCVREF(0, scalar($1)));
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
- | '(' expr ')' '[' expr ']' /* list slice */
- { $$ = newSLICEOP(0, $5, $2);
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- TOKEN_GETMAD($4,$$,'[');
- TOKEN_GETMAD($6,$$,']');
+ newCVREF(0, scalar($code_reference)));
+ if (parser->expect == XBLOCK)
+ parser->expect = XOPERATOR;
}
+ | '(' expr[list] ')' '[' expr[slice] ']' /* list slice */
+ { $$ = newSLICEOP(0, $slice, $list); }
| QWLIST '[' expr ']' /* list literal slice */
- { $$ = newSLICEOP(0, $3, $1);
- TOKEN_GETMAD($2,$$,'[');
- TOKEN_GETMAD($4,$$,']');
- }
+ { $$ = newSLICEOP(0, $expr, $QWLIST); }
| '(' ')' '[' expr ']' /* empty list slice! */
- { $$ = newSLICEOP(0, $4, (OP*)NULL);
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($2,$$,')');
- TOKEN_GETMAD($3,$$,'[');
- TOKEN_GETMAD($5,$$,']');
- }
+ { $$ = newSLICEOP(0, $expr, NULL); }
;
/* Binary operators between terms */
-termbinop: term ASSIGNOP term /* $x = $y */
- { $$ = newASSIGNOP(OPf_STACKED, $1, IVAL($2), $3);
- TOKEN_GETMAD($2,$$,'o');
- }
- | term POWOP term /* $x ** $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term MULOP term /* $x * $y, $x x $y */
- { if (IVAL($2) != OP_REPEAT)
- scalar($1);
- $$ = newBINOP(IVAL($2), 0, $1, scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term ADDOP term /* $x + $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term SHIFTOP term /* $x >> $y, $x << $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term RELOP term /* $x > $y, etc. */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term EQOP term /* $x == $y, $x eq $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term BITANDOP term /* $x & $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term BITOROP term /* $x | $y */
- { $$ = newBINOP(IVAL($2), 0, scalar($1), scalar($3));
- TOKEN_GETMAD($2,$$,'o');
- }
- | term DOTDOT term /* $x..$y, $x...$y */
- {
- $$ = newRANGE(IVAL($2), scalar($1), scalar($3));
- DO_MAD({
- UNOP *op;
- op = (UNOP*)$$;
- op = (UNOP*)op->op_first; /* get to flop */
- op = (UNOP*)op->op_first; /* get to flip */
- op = (UNOP*)op->op_first; /* get to range */
- token_getmad($2,(OP*)op,'o');
- })
- }
- | term ANDAND term /* $x && $y */
- { $$ = newLOGOP(OP_AND, 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
- }
- | term OROR term /* $x || $y */
- { $$ = newLOGOP(OP_OR, 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
- }
- | term DORDOR term /* $x // $y */
- { $$ = newLOGOP(OP_DOR, 0, $1, $3);
- TOKEN_GETMAD($2,$$,'o');
- }
- | term MATCHOP term /* $x =~ /$y/ */
- { $$ = bind_match(IVAL($2), $1, $3);
- TOKEN_GETMAD($2,
- ($$->op_type == OP_NOT
- ? ((UNOP*)$$)->op_first : $$),
- '~');
- }
+termbinop: term[lhs] ASSIGNOP term[rhs] /* $x = $y, $x += $y */
+ { $$ = newASSIGNOP(OPf_STACKED, $lhs, $ASSIGNOP, $rhs); }
+ | term[lhs] POWOP term[rhs] /* $x ** $y */
+ { $$ = newBINOP($POWOP, 0, scalar($lhs), scalar($rhs)); }
+ | term[lhs] MULOP term[rhs] /* $x * $y, $x x $y */
+ { if ($MULOP != OP_REPEAT)
+ scalar($lhs);
+ $$ = newBINOP($MULOP, 0, $lhs, scalar($rhs));
+ }
+ | term[lhs] ADDOP term[rhs] /* $x + $y */
+ { $$ = newBINOP($ADDOP, 0, scalar($lhs), scalar($rhs)); }
+ | term[lhs] SHIFTOP term[rhs] /* $x >> $y, $x << $y */
+ { $$ = newBINOP($SHIFTOP, 0, scalar($lhs), scalar($rhs)); }
+ | termrelop %prec PREC_LOW /* $x > $y, etc. */
+ { $$ = $termrelop; }
+ | termeqop %prec PREC_LOW /* $x == $y, $x cmp $y */
+ { $$ = $termeqop; }
+ | term[lhs] BITANDOP term[rhs] /* $x & $y */
+ { $$ = newBINOP($BITANDOP, 0, scalar($lhs), scalar($rhs)); }
+ | term[lhs] BITOROP term[rhs] /* $x | $y */
+ { $$ = newBINOP($BITOROP, 0, scalar($lhs), scalar($rhs)); }
+ | term[lhs] DOTDOT term[rhs] /* $x..$y, $x...$y */
+ { $$ = newRANGE($DOTDOT, scalar($lhs), scalar($rhs)); }
+ | term[lhs] ANDAND term[rhs] /* $x && $y */
+ { $$ = newLOGOP(OP_AND, 0, $lhs, $rhs); }
+ | term[lhs] OROR term[rhs] /* $x || $y */
+ { $$ = newLOGOP(OP_OR, 0, $lhs, $rhs); }
+ | term[lhs] DORDOR term[rhs] /* $x // $y */
+ { $$ = newLOGOP(OP_DOR, 0, $lhs, $rhs); }
+ | term[lhs] MATCHOP term[rhs] /* $x =~ /$y/ */
+ { $$ = bind_match($MATCHOP, $lhs, $rhs); }
;
+termrelop: relopchain %prec PREC_LOW
+ { $$ = cmpchain_finish($relopchain); }
+ | term[lhs] NCRELOP term[rhs]
+ { $$ = newBINOP($NCRELOP, 0, scalar($lhs), scalar($rhs)); }
+ | termrelop NCRELOP
+ { yyerror("syntax error"); YYERROR; }
+ | termrelop CHRELOP
+ { yyerror("syntax error"); YYERROR; }
+ ;
+
+relopchain: term[lhs] CHRELOP term[rhs]
+ { $$ = cmpchain_start($CHRELOP, $lhs, $rhs); }
+ | relopchain[lhs] CHRELOP term[rhs]
+ { $$ = cmpchain_extend($CHRELOP, $lhs, $rhs); }
+ ;
+
+termeqop: eqopchain %prec PREC_LOW
+ { $$ = cmpchain_finish($eqopchain); }
+ | term[lhs] NCEQOP term[rhs]
+ { $$ = newBINOP($NCEQOP, 0, scalar($lhs), scalar($rhs)); }
+ | termeqop NCEQOP
+ { yyerror("syntax error"); YYERROR; }
+ | termeqop CHEQOP
+ { yyerror("syntax error"); YYERROR; }
+ ;
+
+eqopchain: term[lhs] CHEQOP term[rhs]
+ { $$ = cmpchain_start($CHEQOP, $lhs, $rhs); }
+ | eqopchain[lhs] CHEQOP term[rhs]
+ { $$ = cmpchain_extend($CHEQOP, $lhs, $rhs); }
+ ;
+
/* Unary operators and terms */
termunop : '-' term %prec UMINUS /* -$x */
- { $$ = newUNOP(OP_NEGATE, 0, scalar($2));
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newUNOP(OP_NEGATE, 0, scalar($term)); }
| '+' term %prec UMINUS /* +$x */
- { $$ = IF_MAD(
- newUNOP(OP_NULL, 0, $2),
- $2
- );
- TOKEN_GETMAD($1,$$,'+');
- }
+ { $$ = $term; }
+
| '!' term /* !$x */
- { $$ = newUNOP(OP_NOT, 0, scalar($2));
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newUNOP(OP_NOT, 0, scalar($term)); }
| '~' term /* ~$x */
- { $$ = newUNOP(OP_COMPLEMENT, 0, scalar($2));
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newUNOP($1, 0, scalar($term)); }
| term POSTINC /* $x++ */
{ $$ = newUNOP(OP_POSTINC, 0,
- op_lvalue(scalar($1), OP_POSTINC));
- TOKEN_GETMAD($2,$$,'o');
- }
+ op_lvalue(scalar($term), OP_POSTINC)); }
| term POSTDEC /* $x-- */
{ $$ = newUNOP(OP_POSTDEC, 0,
- op_lvalue(scalar($1), OP_POSTDEC));
- TOKEN_GETMAD($2,$$,'o');
+ op_lvalue(scalar($term), OP_POSTDEC));}
+ | term POSTJOIN /* implicit join after interpolated ->@ */
+ { $$ = op_convert_list(OP_JOIN, 0,
+ op_append_elem(
+ OP_LIST,
+ newSVREF(scalar(
+ newSVOP(OP_CONST,0,
+ newSVpvs("\""))
+ )),
+ $term
+ ));
}
| PREINC term /* ++$x */
{ $$ = newUNOP(OP_PREINC, 0,
- op_lvalue(scalar($2), OP_PREINC));
- TOKEN_GETMAD($1,$$,'o');
- }
+ op_lvalue(scalar($term), OP_PREINC)); }
| PREDEC term /* --$x */
{ $$ = newUNOP(OP_PREDEC, 0,
- op_lvalue(scalar($2), OP_PREDEC));
- TOKEN_GETMAD($1,$$,'o');
- }
+ op_lvalue(scalar($term), OP_PREDEC)); }
;
/* Constructors for anonymous data */
anonymous: '[' expr ']'
- { $$ = newANONLIST($2);
- TOKEN_GETMAD($1,$$,'[');
- TOKEN_GETMAD($3,$$,']');
- }
+ { $$ = newANONLIST($expr); }
| '[' ']'
- { $$ = newANONLIST((OP*)NULL);
- TOKEN_GETMAD($1,$$,'[');
- TOKEN_GETMAD($2,$$,']');
- }
- | HASHBRACK expr ';' '}' %prec '(' /* { foo => "Bar" } */
- { $$ = newANONHASH($2);
- TOKEN_GETMAD($1,$$,'{');
- TOKEN_GETMAD($3,$$,';');
- TOKEN_GETMAD($4,$$,'}');
- }
- | HASHBRACK ';' '}' %prec '(' /* { } (';' by tokener) */
- { $$ = newANONHASH((OP*)NULL);
- TOKEN_GETMAD($1,$$,'{');
- TOKEN_GETMAD($2,$$,';');
- TOKEN_GETMAD($3,$$,'}');
- }
- | ANONSUB startanonsub proto subattrlist block %prec '('
+ { $$ = newANONLIST(NULL);}
+ | HASHBRACK expr ';' PERLY_BRACE_CLOSE %prec '(' /* { foo => "Bar" } */
+ { $$ = newANONHASH($expr); }
+ | HASHBRACK ';' PERLY_BRACE_CLOSE %prec '(' /* { } (';' by tokener) */
+ { $$ = newANONHASH(NULL); }
+ | ANONSUB startanonsub proto subattrlist subbody %prec '('
{ SvREFCNT_inc_simple_void(PL_compcv);
- $$ = newANONATTRSUB($2, $3, $4, $5);
- TOKEN_GETMAD($1,$$,'o');
- OP_GETMAD($3,$$,'s');
- OP_GETMAD($4,$$,'a');
- }
-
+ $$ = newANONATTRSUB($startanonsub, $proto, $subattrlist, $subbody); }
+ | ANON_SIGSUB startanonsub subattrlist sigsubbody %prec '('
+ { SvREFCNT_inc_simple_void(PL_compcv);
+ $$ = newANONATTRSUB($startanonsub, NULL, $subattrlist, $sigsubbody); }
;
/* Things called with "do" */
termdo : DO term %prec UNIOP /* do $filename */
- { $$ = dofile($2, IVAL($1));
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = dofile($term, $DO);}
| DO block %prec '(' /* do { code */
- { $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($2));
- TOKEN_GETMAD($1,$$,'D');
- }
- | DO WORD '(' ')' /* do somesub() */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )),(OP*)NULL)); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
- | DO WORD '(' expr ')' /* do somesub(@args) */
- { $$ = newUNOP(OP_ENTERSUB,
- OPf_SPECIAL|OPf_STACKED,
- op_append_elem(OP_LIST,
- $4,
- scalar(newCVREF(
- (OPpENTERSUB_AMPER<<8),
- scalar($2)
- )))); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
- | DO scalar '(' ')' /* do $subref () */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- scalar(newCVREF(0,scalar($2))), (OP*)NULL)); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
- | DO scalar '(' expr ')' /* do $subref (@args) */
- { $$ = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
- op_prepend_elem(OP_LIST,
- $4,
- scalar(newCVREF(0,scalar($2))))); dep();
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
-
+ { $$ = newUNOP(OP_NULL, OPf_SPECIAL, op_scope($block));}
;
-term : termbinop
+term[product] : termbinop
| termunop
| anonymous
| termdo
- | term '?' term ':' term
- { $$ = newCONDOP(0, $1, $3, $5);
- TOKEN_GETMAD($2,$$,'?');
- TOKEN_GETMAD($4,$$,':');
- }
- | REFGEN term /* \$x, \@y, \%z */
- { $$ = newUNOP(OP_REFGEN, 0, op_lvalue($2,OP_REFGEN));
- TOKEN_GETMAD($1,$$,'o');
- }
+ | term[condition] '?' term[then] ':' term[else]
+ { $$ = newCONDOP(0, $condition, $then, $else); }
+ | REFGEN term[operand] /* \$x, \@y, \%z */
+ { $$ = newUNOP(OP_REFGEN, 0, $operand); }
+ | MY REFGEN term[operand]
+ { $$ = newUNOP(OP_REFGEN, 0, localize($operand,1)); }
| myattrterm %prec UNIOP
- { $$ = $1; }
- | LOCAL term %prec UNIOP
- { $$ = localize($2,IVAL($1));
- TOKEN_GETMAD($1,$$,'k');
- }
+ { $$ = $myattrterm; }
+ | LOCAL term[operand] %prec UNIOP
+ { $$ = localize($operand,0); }
| '(' expr ')'
- { $$ = sawparens(IF_MAD(newUNOP(OP_NULL,0,$2), $2));
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
+ { $$ = sawparens($expr); }
| QWLIST
- { $$ = IF_MAD(newUNOP(OP_NULL,0,$1), $1); }
+ { $$ = $QWLIST; }
| '(' ')'
- { $$ = sawparens(newNULLLIST());
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($2,$$,')');
- }
+ { $$ = sawparens(newNULLLIST()); }
| scalar %prec '('
- { $$ = $1; }
+ { $$ = $scalar; }
| star %prec '('
- { $$ = $1; }
+ { $$ = $star; }
| hsh %prec '('
- { $$ = $1; }
+ { $$ = $hsh; }
| ary %prec '('
- { $$ = $1; }
+ { $$ = $ary; }
| arylen %prec '(' /* $#x, $#{ something } */
- { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($1, OP_AV2ARYLEN));}
+ { $$ = newUNOP(OP_AV2ARYLEN, 0, ref($arylen, OP_AV2ARYLEN));}
| subscripted
- { $$ = $1; }
- | ary '[' expr ']' /* array slice */
+ { $$ = $subscripted; }
+ | sliceme '[' expr ']' /* array slice */
{ $$ = op_prepend_elem(OP_ASLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_ASLICE, 0,
- list($3),
- ref($1, OP_ASLICE)));
- TOKEN_GETMAD($2,$$,'[');
- TOKEN_GETMAD($4,$$,']');
- }
- | ary '{' expr ';' '}' /* @hash{@keys} */
+ list($expr),
+ ref($sliceme, OP_ASLICE)));
+ if ($$ && $sliceme)
+ $$->op_private |=
+ $sliceme->op_private & OPpSLICEWARNING;
+ }
+ | kvslice '[' expr ']' /* array key/value slice */
+ { $$ = op_prepend_elem(OP_KVASLICE,
+ newOP(OP_PUSHMARK, 0),
+ newLISTOP(OP_KVASLICE, 0,
+ list($expr),
+ ref(oopsAV($kvslice), OP_KVASLICE)));
+ if ($$ && $kvslice)
+ $$->op_private |=
+ $kvslice->op_private & OPpSLICEWARNING;
+ }
+ | sliceme PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* @hash{@keys} */
{ $$ = op_prepend_elem(OP_HSLICE,
newOP(OP_PUSHMARK, 0),
newLISTOP(OP_HSLICE, 0,
- list($3),
- ref(oopsHV($1), OP_HSLICE)));
- PL_parser->expect = XOPERATOR;
- TOKEN_GETMAD($2,$$,'{');
- TOKEN_GETMAD($4,$$,';');
- TOKEN_GETMAD($5,$$,'}');
+ list($expr),
+ ref(oopsHV($sliceme), OP_HSLICE)));
+ if ($$ && $sliceme)
+ $$->op_private |=
+ $sliceme->op_private & OPpSLICEWARNING;
+ }
+ | kvslice PERLY_BRACE_OPEN expr ';' PERLY_BRACE_CLOSE /* %hash{@keys} */
+ { $$ = op_prepend_elem(OP_KVHSLICE,
+ newOP(OP_PUSHMARK, 0),
+ newLISTOP(OP_KVHSLICE, 0,
+ list($expr),
+ ref($kvslice, OP_KVHSLICE)));
+ if ($$ && $kvslice)
+ $$->op_private |=
+ $kvslice->op_private & OPpSLICEWARNING;
}
| THING %prec '('
- { $$ = $1; }
+ { $$ = $THING; }
| amper /* &foo; */
- { $$ = newUNOP(OP_ENTERSUB, 0, scalar($1)); }
- | amper '(' ')' /* &foo() */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1));
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($3,$$,')');
+ { $$ = newUNOP(OP_ENTERSUB, 0, scalar($amper)); }
+ | amper '(' ')' /* &foo() or foo() */
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($amper));
}
- | amper '(' expr ')' /* &foo(@args) */
+ | amper '(' expr ')' /* &foo(@args) or foo(@args) */
{
$$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, $3, scalar($1)));
- DO_MAD({
- OP* op = $$;
- if (op->op_type == OP_CONST) { /* defeat const fold */
- op = (OP*)op->op_madprop->mad_val;
- }
- token_getmad($2,op,'(');
- token_getmad($4,op,')');
- })
- }
- | NOAMP WORD optlistexpr /* foo(@args) */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, $3, scalar($2)));
- TOKEN_GETMAD($1,$$,'o');
+ op_append_elem(OP_LIST, $expr, scalar($amper)));
}
+ | NOAMP subname optlistexpr /* foo @args (no parens) */
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
+ op_append_elem(OP_LIST, $optlistexpr, scalar($subname)));
+ }
+ | term[operand] ARROW '$' '*'
+ { $$ = newSVREF($operand); }
+ | term[operand] ARROW '@' '*'
+ { $$ = newAVREF($operand); }
+ | term[operand] ARROW '%' '*'
+ { $$ = newHVREF($operand); }
+ | term[operand] ARROW '&' '*'
+ { $$ = newUNOP(OP_ENTERSUB, 0,
+ scalar(newCVREF($3,$operand))); }
+ | term[operand] ARROW '*' '*' %prec '('
+ { $$ = newGVREF(0,$operand); }
| LOOPEX /* loop exiting command (goto, last, dump, etc) */
- { $$ = newOP(IVAL($1), OPf_SPECIAL);
- PL_hints |= HINT_BLOCK_SCOPE;
- TOKEN_GETMAD($1,$$,'o');
- }
- | LOOPEX term
- { $$ = newLOOPEX(IVAL($1),$2);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newOP($LOOPEX, OPf_SPECIAL);
+ PL_hints |= HINT_BLOCK_SCOPE; }
+ | LOOPEX term[operand]
+ { $$ = newLOOPEX($LOOPEX,$operand); }
| NOTOP listexpr /* not $foo */
- { $$ = newUNOP(OP_NOT, 0, scalar($2));
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newUNOP(OP_NOT, 0, scalar($listexpr)); }
| UNIOP /* Unary op, $_ implied */
- { $$ = newOP(IVAL($1), 0);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newOP($UNIOP, 0); }
| UNIOP block /* eval { foo }* */
- { $$ = newUNOP(IVAL($1), 0, $2);
- TOKEN_GETMAD($1,$$,'o');
- }
- | UNIOP term /* Unary op */
- { $$ = newUNOP(IVAL($1), 0, $2);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newUNOP($UNIOP, 0, $block); }
+ | UNIOP term[operand] /* Unary op */
+ { $$ = newUNOP($UNIOP, 0, $operand); }
| REQUIRE /* require, $_ implied */
- { $$ = newOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0);
- TOKEN_GETMAD($1,$$,'o');
- }
- | REQUIRE term /* require Foo */
- { $$ = newUNOP(OP_REQUIRE, $1 ? OPf_SPECIAL : 0, $2);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newOP(OP_REQUIRE, $REQUIRE ? OPf_SPECIAL : 0); }
+ | REQUIRE term[operand] /* require Foo */
+ { $$ = newUNOP(OP_REQUIRE, $REQUIRE ? OPf_SPECIAL : 0, $operand); }
| UNIOPSUB
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($1)); }
- | UNIOPSUB term /* Sub treated as unop */
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($UNIOPSUB)); }
+ | UNIOPSUB term[operand] /* Sub treated as unop */
{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- op_append_elem(OP_LIST, $2, scalar($1))); }
+ op_append_elem(OP_LIST, $operand, scalar($UNIOPSUB))); }
| FUNC0 /* Nullary operator */
- { $$ = newOP(IVAL($1), 0);
- TOKEN_GETMAD($1,$$,'o');
- }
+ { $$ = newOP($FUNC0, 0); }
| FUNC0 '(' ')'
- { $$ = newOP(IVAL($1), 0);
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
+ { $$ = newOP($FUNC0, 0);}
| FUNC0OP /* Same as above, but op created in toke.c */
- { $$ = $1; }
+ { $$ = $FUNC0OP; }
| FUNC0OP '(' ')'
- { $$ = $1;
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
+ { $$ = $FUNC0OP; }
| FUNC0SUB /* Sub treated as nullop */
- { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
- scalar($1)); }
+ { $$ = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar($FUNC0SUB)); }
| FUNC1 '(' ')' /* not () */
- { $$ = (IVAL($1) == OP_NOT)
- ? newUNOP(IVAL($1), 0, newSVOP(OP_CONST, 0, newSViv(0)))
- : newOP(IVAL($1), OPf_SPECIAL);
-
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
+ { $$ = ($FUNC1 == OP_NOT)
+ ? newUNOP($FUNC1, 0, newSVOP(OP_CONST, 0, newSViv(0)))
+ : newOP($FUNC1, OPf_SPECIAL); }
| FUNC1 '(' expr ')' /* not($foo) */
- { $$ = newUNOP(IVAL($1), 0, $3);
- TOKEN_GETMAD($1,$$,'o');
- TOKEN_GETMAD($2,$$,'(');
- TOKEN_GETMAD($4,$$,')');
- }
+ { $$ = newUNOP($FUNC1, 0, $expr); }
| PMFUNC /* m//, s///, qr//, tr/// */
{
- if ( $1->op_type != OP_TRANS
- && $1->op_type != OP_TRANSR
- && (((PMOP*)$1)->op_pmflags & PMf_HAS_CV))
+ if ( $PMFUNC->op_type != OP_TRANS
+ && $PMFUNC->op_type != OP_TRANSR
+ && (((PMOP*)$PMFUNC)->op_pmflags & PMf_HAS_CV))
{
$<ival>$ = start_subparse(FALSE, CVf_ANON);
SAVEFREESV(PL_compcv);
} else
$<ival>$ = 0;
}
- '(' listexpr ')'
- { $$ = pmruntime($1, $4, 1, $<ival>2);
- TOKEN_GETMAD($3,$$,'(');
- TOKEN_GETMAD($5,$$,')');
- }
- | WORD
+ SUBLEXSTART listexpr optrepl SUBLEXEND
+ { $$ = pmruntime($PMFUNC, $listexpr, $optrepl, 1, $<ival>2); }
+ | BAREWORD
| listop
- | YADAYADA
- {
- $$ = newLISTOP(OP_DIE, 0, newOP(OP_PUSHMARK, 0),
- newSVOP(OP_CONST, 0, newSVpvs("Unimplemented")));
- TOKEN_GETMAD($1,$$,'X');
- }
| PLUGEXPR
;
/* "my" declarations, with optional attributes */
myattrterm: MY myterm myattrlist
- { $$ = my_attrs($2,$3);
- DO_MAD(
- token_getmad($1,$$,'d');
- append_madprops($3->op_madprop, $$, 'a');
- $3->op_madprop = 0;
- )
- }
+ { $$ = my_attrs($myterm,$myattrlist); }
| MY myterm
- { $$ = localize($2,IVAL($1));
- TOKEN_GETMAD($1,$$,'d');
- }
+ { $$ = localize($myterm,1); }
+ | MY REFGEN myterm myattrlist
+ { $$ = newUNOP(OP_REFGEN, 0, my_attrs($myterm,$myattrlist)); }
;
/* Things that can be "my"'d */
myterm : '(' expr ')'
- { $$ = sawparens($2);
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($3,$$,')');
- }
+ { $$ = sawparens($expr); }
| '(' ')'
- { $$ = sawparens(newNULLLIST());
- TOKEN_GETMAD($1,$$,'(');
- TOKEN_GETMAD($2,$$,')');
- }
+ { $$ = sawparens(newNULLLIST()); }
+
| scalar %prec '('
- { $$ = $1; }
+ { $$ = $scalar; }
| hsh %prec '('
- { $$ = $1; }
+ { $$ = $hsh; }
| ary %prec '('
- { $$ = $1; }
+ { $$ = $ary; }
;
/* Basic list expressions */
optlistexpr: /* NULL */ %prec PREC_LOW
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| listexpr %prec PREC_LOW
- { $$ = $1; }
+ { $$ = $listexpr; }
;
optexpr: /* NULL */
- { $$ = (OP*)NULL; }
+ { $$ = NULL; }
| expr
- { $$ = $1; }
+ { $$ = $expr; }
+ ;
+
+optrepl: /* NULL */
+ { $$ = NULL; }
+ | '/' expr
+ { $$ = $expr; }
;
/* A little bit of trickery to make "for my $foo (@bar)" actually be
lexical */
my_scalar: scalar
- { PL_parser->in_my = 0; $$ = my($1); }
+ { parser->in_my = 0; $$ = my($scalar); }
+ ;
+
+my_var : scalar
+ | ary
+ | hsh
+ ;
+
+refgen_topic: my_var
+ | amper
+ ;
+
+my_refgen: MY REFGEN
+ | REFGEN MY
;
amper : '&' indirob
- { $$ = newCVREF(IVAL($1),$2);
- TOKEN_GETMAD($1,$$,'&');
- }
+ { $$ = newCVREF($1,$indirob); }
;
scalar : '$' indirob
- { $$ = newSVREF($2);
- TOKEN_GETMAD($1,$$,'$');
- }
+ { $$ = newSVREF($indirob); }
;
ary : '@' indirob
- { $$ = newAVREF($2);
- TOKEN_GETMAD($1,$$,'@');
+ { $$ = newAVREF($indirob);
+ if ($$) $$->op_private |= $1;
}
;
hsh : '%' indirob
- { $$ = newHVREF($2);
- TOKEN_GETMAD($1,$$,'%');
+ { $$ = newHVREF($indirob);
+ if ($$) $$->op_private |= $1;
}
;
arylen : DOLSHARP indirob
- { $$ = newAVREF($2);
- TOKEN_GETMAD($1,$$,'l');
- }
+ { $$ = newAVREF($indirob); }
+ | term ARROW DOLSHARP '*'
+ { $$ = newAVREF($term); }
;
star : '*' indirob
- { $$ = newGVREF(0,$2);
- TOKEN_GETMAD($1,$$,'*');
- }
+ { $$ = newGVREF(0,$indirob); }
+ ;
+
+sliceme : ary
+ | term ARROW '@'
+ { $$ = newAVREF($term); }
+ ;
+
+kvslice : hsh
+ | term ARROW '%'
+ { $$ = newHVREF($term); }
+ ;
+
+gelem : star
+ | term ARROW '*'
+ { $$ = newGVREF(0,$term); }
;
/* Indirect objects */
-indirob : WORD
- { $$ = scalar($1); }
+indirob : BAREWORD
+ { $$ = scalar($BAREWORD); }
| scalar %prec PREC_LOW
- { $$ = scalar($1); }
+ { $$ = scalar($scalar); }
| block
- { $$ = op_scope($1); }
+ { $$ = op_scope($block); }
| PRIVATEREF
- { $$ = $1; }
+ { $$ = $PRIVATEREF; }
;
https://perl5.git.perl.org / perl5.git / blobdiff