diff options
Diffstat (limited to 'perly.y.orig')
| -rw-r--r-- | perly.y.orig | 870 |
1 files changed, 0 insertions, 870 deletions
diff --git a/perly.y.orig b/perly.y.orig deleted file mode 100644 index a52f18aff0..0000000000 --- a/perly.y.orig +++ /dev/null @@ -1,870 +0,0 @@ -/* $RCSfile: perly.y,v $$Revision: 4.0.1.5 $$Date: 92/06/11 21:12:50 $ - * - * Copyright (c) 1991, Larry Wall - * - * You may distribute under the terms of either the GNU General Public - * License or the Artistic License, as specified in the README file. - * - * $Log: perly.y,v $ - * Revision 4.0.1.5 92/06/11 21:12:50 lwall - * patch34: expectterm incorrectly set to indicate start of program or block - * - * Revision 4.0.1.4 92/06/08 17:33:25 lwall - * patch20: one of the backdoors to expectterm was on the wrong reduction - * - * Revision 4.0.1.3 92/06/08 15:18:16 lwall - * patch20: an expression may now start with a bareword - * patch20: relaxed requirement for semicolon at the end of a block - * patch20: added ... as variant on .. - * patch20: fixed double debug break in foreach with implicit array assignment - * patch20: if {block} {block} didn't work any more - * patch20: deleted some minor memory leaks - * - * Revision 4.0.1.2 91/11/05 18:17:38 lwall - * patch11: extra comma at end of list is now allowed in more places (Hi, Felix!) - * patch11: once-thru blocks didn't display right in the debugger - * patch11: debugger got confused over nested subroutine definitions - * - * Revision 4.0.1.1 91/06/07 11:42:34 lwall - * patch4: new copyright notice - * - * Revision 4.0 91/03/20 01:38:40 lwall - * 4.0 baseline. - * - */ - -%{ -#include "INTERN.h" -#include "perl.h" - -/*SUPPRESS 530*/ -/*SUPPRESS 593*/ -/*SUPPRESS 595*/ - -STAB *scrstab; -ARG *arg4; /* rarely used arguments to make_op() */ -ARG *arg5; - -%} - -%start prog - -%union { - int ival; - char *cval; - ARG *arg; - CMD *cmdval; - struct compcmd compval; - STAB *stabval; - FCMD *formval; -} - -%token <ival> '{' ')' - -%token <cval> WORD LABEL -%token <ival> APPEND OPEN SSELECT LOOPEX DOTDOT -%token <ival> USING FORMAT DO SHIFT PUSH POP LVALFUN -%token <ival> WHILE UNTIL IF UNLESS ELSE ELSIF CONTINUE SPLIT FLIST -%token <ival> FOR FILOP FILOP2 FILOP3 FILOP4 FILOP22 FILOP25 -%token <ival> FUNC0 FUNC1 FUNC2 FUNC2x FUNC3 FUNC4 FUNC5 HSHFUN HSHFUN3 -%token <ival> FLIST2 SUB FILETEST LOCAL DELETE -%token <ival> RELOP EQOP MULOP ADDOP PACKAGE AMPER -%token <formval> FORMLIST -%token <stabval> REG ARYLEN ARY HSH STAR -%token <arg> SUBST PATTERN -%token <arg> RSTRING TRANS - -%type <ival> prog decl format remember crp -%type <cmdval> block lineseq line loop cond sideff nexpr else -%type <arg> expr sexpr cexpr csexpr term handle aryword hshword -%type <arg> texpr listop bareword -%type <cval> label -%type <compval> compblock - -%nonassoc <ival> LISTOP -%left ',' -%right '=' -%right '?' ':' -%nonassoc DOTDOT -%left OROR -%left ANDAND -%left '|' '^' -%left '&' -%nonassoc EQOP -%nonassoc RELOP -%nonassoc <ival> UNIOP -%nonassoc FILETEST -%left LS RS -%left ADDOP -%left MULOP -%left MATCH NMATCH -%right '!' '~' UMINUS -%right POW -%nonassoc INC DEC -%left '(' - -%% /* RULES */ - -prog : /* NULL */ - { -#if defined(YYDEBUG) && defined(DEBUGGING) - yydebug = (debug & 1); -#endif - expectterm = 2; - } - /*CONTINUED*/ lineseq - { if (in_eval) - eval_root = block_head($2); - else - main_root = block_head($2); } - ; - -compblock: block CONTINUE block - { $$.comp_true = $1; $$.comp_alt = $3; } - | block else - { $$.comp_true = $1; $$.comp_alt = $2; } - ; - -else : /* NULL */ - { $$ = Nullcmd; } - | ELSE block - { $$ = $2; } - | ELSIF '(' expr ')' compblock - { cmdline = $1; - $$ = make_ccmd(C_ELSIF,1,$3,$5); } - ; - -block : '{' remember lineseq '}' - { $$ = block_head($3); - if (cmdline > (line_t)$1) - cmdline = $1; - if (savestack->ary_fill > $2) - restorelist($2); - expectterm = 2; } - ; - -remember: /* NULL */ /* in case they push a package name */ - { $$ = savestack->ary_fill; } - ; - -lineseq : /* NULL */ - { $$ = Nullcmd; } - | lineseq line - { $$ = append_line($1,$2); } - ; - -line : decl - { $$ = Nullcmd; } - | label cond - { $$ = add_label($1,$2); } - | loop /* loops add their own labels */ - | label ';' - { if ($1 != Nullch) { - $$ = add_label($1, make_acmd(C_EXPR, Nullstab, - Nullarg, Nullarg) ); - } - else { - $$ = Nullcmd; - cmdline = NOLINE; - } - expectterm = 2; } - | label sideff ';' - { $$ = add_label($1,$2); - expectterm = 2; } - ; - -sideff : error - { $$ = Nullcmd; } - | expr - { $$ = make_acmd(C_EXPR, Nullstab, $1, Nullarg); } - | expr IF expr - { $$ = addcond( - make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } - | expr UNLESS expr - { $$ = addcond(invert( - make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } - | expr WHILE expr - { $$ = addloop( - make_acmd(C_EXPR, Nullstab, Nullarg, $1), $3); } - | expr UNTIL expr - { $$ = addloop(invert( - make_acmd(C_EXPR, Nullstab, Nullarg, $1)), $3); } - ; - -cond : IF '(' expr ')' compblock - { cmdline = $1; - $$ = make_icmd(C_IF,$3,$5); } - | UNLESS '(' expr ')' compblock - { cmdline = $1; - $$ = invert(make_icmd(C_IF,$3,$5)); } - | IF block compblock - { cmdline = $1; - $$ = make_icmd(C_IF,cmd_to_arg($2),$3); } - | UNLESS block compblock - { cmdline = $1; - $$ = invert(make_icmd(C_IF,cmd_to_arg($2),$3)); } - ; - -loop : label WHILE '(' texpr ')' compblock - { cmdline = $2; - $$ = wopt(add_label($1, - make_ccmd(C_WHILE,1,$4,$6) )); } - | label UNTIL '(' expr ')' compblock - { cmdline = $2; - $$ = wopt(add_label($1, - invert(make_ccmd(C_WHILE,1,$4,$6)) )); } - | label WHILE block compblock - { cmdline = $2; - $$ = wopt(add_label($1, - make_ccmd(C_WHILE, 1, cmd_to_arg($3),$4) )); } - | label UNTIL block compblock - { cmdline = $2; - $$ = wopt(add_label($1, - invert(make_ccmd(C_WHILE,1,cmd_to_arg($3),$4)) )); } - | label FOR REG '(' expr crp compblock - { cmdline = $2; - /* - * The following gobbledygook catches EXPRs that - * aren't explicit array refs and translates - * foreach VAR (EXPR) { - * into - * @ary = EXPR; - * foreach VAR (@ary) { - * where @ary is a hidden array made by genstab(). - * (Note that @ary may become a local array if - * it is determined that it might be called - * recursively. See cmd_tosave().) - */ - if ($5->arg_type != O_ARRAY) { - scrstab = aadd(genstab()); - $$ = append_line( - make_acmd(C_EXPR, Nullstab, - l(make_op(O_ASSIGN,2, - listish(make_op(O_ARRAY, 1, - stab2arg(A_STAB,scrstab), - Nullarg,Nullarg )), - listish(make_list($5)), - Nullarg)), - Nullarg), - wopt(over($3,add_label($1, - make_ccmd(C_WHILE, 0, - make_op(O_ARRAY, 1, - stab2arg(A_STAB,scrstab), - Nullarg,Nullarg ), - $7))))); - $$->c_line = $2; - $$->c_head->c_line = $2; - } - else { - $$ = wopt(over($3,add_label($1, - make_ccmd(C_WHILE,1,$5,$7) ))); - } - } - | label FOR '(' expr crp compblock - { cmdline = $2; - if ($4->arg_type != O_ARRAY) { - scrstab = aadd(genstab()); - $$ = append_line( - make_acmd(C_EXPR, Nullstab, - l(make_op(O_ASSIGN,2, - listish(make_op(O_ARRAY, 1, - stab2arg(A_STAB,scrstab), - Nullarg,Nullarg )), - listish(make_list($4)), - Nullarg)), - Nullarg), - wopt(over(defstab,add_label($1, - make_ccmd(C_WHILE, 0, - make_op(O_ARRAY, 1, - stab2arg(A_STAB,scrstab), - Nullarg,Nullarg ), - $6))))); - $$->c_line = $2; - $$->c_head->c_line = $2; - } - else { /* lisp, anyone? */ - $$ = wopt(over(defstab,add_label($1, - make_ccmd(C_WHILE,1,$4,$6) ))); - } - } - | label FOR '(' nexpr ';' texpr ';' nexpr ')' block - /* basically fake up an initialize-while lineseq */ - { yyval.compval.comp_true = $10; - yyval.compval.comp_alt = $8; - cmdline = $2; - $$ = append_line($4,wopt(add_label($1, - make_ccmd(C_WHILE,1,$6,yyval.compval) ))); } - | label compblock /* a block is a loop that happens once */ - { $$ = add_label($1,make_ccmd(C_BLOCK,1,Nullarg,$2)); } - ; - -nexpr : /* NULL */ - { $$ = Nullcmd; } - | sideff - ; - -texpr : /* NULL means true */ - { (void)scanstr("1",SCAN_DEF); $$ = yylval.arg; } - | expr - ; - -label : /* empty */ - { $$ = Nullch; } - | LABEL - ; - -decl : format - { $$ = 0; } - | subrout - { $$ = 0; } - | package - { $$ = 0; } - ; - -format : FORMAT WORD '=' FORMLIST - { if (strEQ($2,"stdout")) - make_form(stabent("STDOUT",TRUE),$4); - else if (strEQ($2,"stderr")) - make_form(stabent("STDERR",TRUE),$4); - else - make_form(stabent($2,TRUE),$4); - Safefree($2); $2 = Nullch; } - | FORMAT '=' FORMLIST - { make_form(stabent("STDOUT",TRUE),$3); } - ; - -subrout : SUB WORD block - { make_sub($2,$3); - cmdline = NOLINE; - if (savestack->ary_fill > $1) - restorelist($1); } - ; - -package : PACKAGE WORD ';' - { char tmpbuf[256]; - STAB *tmpstab; - - savehptr(&curstash); - saveitem(curstname); - str_set(curstname,$2); - sprintf(tmpbuf,"'_%s",$2); - tmpstab = stabent(tmpbuf,TRUE); - if (!stab_xhash(tmpstab)) - stab_xhash(tmpstab) = hnew(0); - curstash = stab_xhash(tmpstab); - if (!curstash->tbl_name) - curstash->tbl_name = savestr($2); - curstash->tbl_coeffsize = 0; - Safefree($2); $2 = Nullch; - cmdline = NOLINE; - expectterm = 2; - } - ; - -cexpr : ',' expr - { $$ = $2; } - ; - -expr : expr ',' sexpr - { $$ = make_op(O_COMMA, 2, $1, $3, Nullarg); } - | sexpr - ; - -csexpr : ',' sexpr - { $$ = $2; } - ; - -sexpr : sexpr '=' sexpr - { $1 = listish($1); - if ($1->arg_type == O_ASSIGN && $1->arg_len == 1) - $1->arg_type = O_ITEM; /* a local() */ - if ($1->arg_type == O_LIST) - $3 = listish($3); - $$ = l(make_op(O_ASSIGN, 2, $1, $3, Nullarg)); } - | sexpr POW '=' sexpr - { $$ = l(make_op(O_POW, 2, $1, $4, Nullarg)); } - | sexpr MULOP '=' sexpr - { $$ = l(make_op($2, 2, $1, $4, Nullarg)); } - | sexpr ADDOP '=' sexpr - { $$ = rcatmaybe(l(make_op($2, 2, $1, $4, Nullarg)));} - | sexpr LS '=' sexpr - { $$ = l(make_op(O_LEFT_SHIFT, 2, $1, $4, Nullarg)); } - | sexpr RS '=' sexpr - { $$ = l(make_op(O_RIGHT_SHIFT, 2, $1, $4, Nullarg)); } - | sexpr '&' '=' sexpr - { $$ = l(make_op(O_BIT_AND, 2, $1, $4, Nullarg)); } - | sexpr '^' '=' sexpr - { $$ = l(make_op(O_XOR, 2, $1, $4, Nullarg)); } - | sexpr '|' '=' sexpr - { $$ = l(make_op(O_BIT_OR, 2, $1, $4, Nullarg)); } - - - | sexpr POW sexpr - { $$ = make_op(O_POW, 2, $1, $3, Nullarg); } - | sexpr MULOP sexpr - { if ($2 == O_REPEAT) - $1 = listish($1); - $$ = make_op($2, 2, $1, $3, Nullarg); - if ($2 == O_REPEAT) { - if ($$[1].arg_type != A_EXPR || - $$[1].arg_ptr.arg_arg->arg_type != O_LIST) - $$[1].arg_flags &= ~AF_ARYOK; - } } - | sexpr ADDOP sexpr - { $$ = make_op($2, 2, $1, $3, Nullarg); } - | sexpr LS sexpr - { $$ = make_op(O_LEFT_SHIFT, 2, $1, $3, Nullarg); } - | sexpr RS sexpr - { $$ = make_op(O_RIGHT_SHIFT, 2, $1, $3, Nullarg); } - | sexpr RELOP sexpr - { $$ = make_op($2, 2, $1, $3, Nullarg); } - | sexpr EQOP sexpr - { $$ = make_op($2, 2, $1, $3, Nullarg); } - | sexpr '&' sexpr - { $$ = make_op(O_BIT_AND, 2, $1, $3, Nullarg); } - | sexpr '^' sexpr - { $$ = make_op(O_XOR, 2, $1, $3, Nullarg); } - | sexpr '|' sexpr - { $$ = make_op(O_BIT_OR, 2, $1, $3, Nullarg); } - | sexpr DOTDOT sexpr - { arg4 = Nullarg; - $$ = make_op(O_F_OR_R, 4, $1, $3, Nullarg); - $$[0].arg_flags |= $2; } - | sexpr ANDAND sexpr - { $$ = make_op(O_AND, 2, $1, $3, Nullarg); } - | sexpr OROR sexpr - { $$ = make_op(O_OR, 2, $1, $3, Nullarg); } - | sexpr '?' sexpr ':' sexpr - { $$ = make_op(O_COND_EXPR, 3, $1, $3, $5); } - | sexpr MATCH sexpr - { $$ = mod_match(O_MATCH, $1, $3); } - | sexpr NMATCH sexpr - { $$ = mod_match(O_NMATCH, $1, $3); } - | term - { $$ = $1; } - ; - -term : '-' term %prec UMINUS - { $$ = make_op(O_NEGATE, 1, $2, Nullarg, Nullarg); } - | '+' term %prec UMINUS - { $$ = $2; } - | '!' term - { $$ = make_op(O_NOT, 1, $2, Nullarg, Nullarg); } - | '~' term - { $$ = make_op(O_COMPLEMENT, 1, $2, Nullarg, Nullarg);} - | term INC - { $$ = addflags(1, AF_POST|AF_UP, - l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } - | term DEC - { $$ = addflags(1, AF_POST, - l(make_op(O_ITEM,1,$1,Nullarg,Nullarg))); } - | INC term - { $$ = addflags(1, AF_PRE|AF_UP, - l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } - | DEC term - { $$ = addflags(1, AF_PRE, - l(make_op(O_ITEM,1,$2,Nullarg,Nullarg))); } - | FILETEST WORD - { opargs[$1] = 0; /* force it special */ - $$ = make_op($1, 1, - stab2arg(A_STAB,stabent($2,TRUE)), - Nullarg, Nullarg); - Safefree($2); $2 = Nullch; - } - | FILETEST sexpr - { opargs[$1] = 1; - $$ = make_op($1, 1, $2, Nullarg, Nullarg); } - | FILETEST - { opargs[$1] = ($1 != O_FTTTY); - $$ = make_op($1, 1, - stab2arg(A_STAB, - $1 == O_FTTTY?stabent("STDIN",TRUE):defstab), - Nullarg, Nullarg); } - | LOCAL '(' expr crp - { $$ = l(localize(make_op(O_ASSIGN, 1, - localize(listish(make_list($3))), - Nullarg,Nullarg))); } - | '(' expr crp - { $$ = make_list($2); } - | '(' ')' - { $$ = make_list(Nullarg); } - | DO sexpr %prec FILETEST - { $$ = make_op(O_DOFILE,2,$2,Nullarg,Nullarg); - allstabs = TRUE;} - | DO block %prec '(' - { $$ = cmd_to_arg($2); } - | REG %prec '(' - { $$ = stab2arg(A_STAB,$1); } - | STAR %prec '(' - { $$ = stab2arg(A_STAR,$1); } - | REG '[' expr ']' %prec '(' - { $$ = make_op(O_AELEM, 2, - stab2arg(A_STAB,aadd($1)), $3, Nullarg); } - | HSH %prec '(' - { $$ = make_op(O_HASH, 1, - stab2arg(A_STAB,$1), - Nullarg, Nullarg); } - | ARY %prec '(' - { $$ = make_op(O_ARRAY, 1, - stab2arg(A_STAB,$1), - Nullarg, Nullarg); } - | REG '{' expr ';' '}' %prec '(' - { $$ = make_op(O_HELEM, 2, - stab2arg(A_STAB,hadd($1)), - jmaybe($3), - Nullarg); - expectterm = FALSE; } - | '(' expr crp '[' expr ']' %prec '(' - { $$ = make_op(O_LSLICE, 3, - Nullarg, - listish(make_list($5)), - listish(make_list($2))); } - | '(' ')' '[' expr ']' %prec '(' - { $$ = make_op(O_LSLICE, 3, - Nullarg, - listish(make_list($4)), - Nullarg); } - | ARY '[' expr ']' %prec '(' - { $$ = make_op(O_ASLICE, 2, - stab2arg(A_STAB,aadd($1)), - listish(make_list($3)), - Nullarg); } - | ARY '{' expr ';' '}' %prec '(' - { $$ = make_op(O_HSLICE, 2, - stab2arg(A_STAB,hadd($1)), - listish(make_list($3)), - Nullarg); - expectterm = FALSE; } - | DELETE REG '{' expr ';' '}' %prec '(' - { $$ = make_op(O_DELETE, 2, - stab2arg(A_STAB,hadd($2)), - jmaybe($4), - Nullarg); - expectterm = FALSE; } - | DELETE '(' REG '{' expr ';' '}' ')' %prec '(' - { $$ = make_op(O_DELETE, 2, - stab2arg(A_STAB,hadd($3)), - jmaybe($4), - Nullarg); - expectterm = FALSE; } - | ARYLEN %prec '(' - { $$ = stab2arg(A_ARYLEN,$1); } - | RSTRING %prec '(' - { $$ = $1; } - | PATTERN %prec '(' - { $$ = $1; } - | SUBST %prec '(' - { $$ = $1; } - | TRANS %prec '(' - { $$ = $1; } - | DO WORD '(' expr crp - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_WORD,stabent($2,MULTI)), - make_list($4), - Nullarg); Safefree($2); $2 = Nullch; - $$->arg_flags |= AF_DEPR; } - | AMPER WORD '(' expr crp - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_WORD,stabent($2,MULTI)), - make_list($4), - Nullarg); Safefree($2); $2 = Nullch; } - | DO WORD '(' ')' - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_WORD,stabent($2,MULTI)), - make_list(Nullarg), - Nullarg); - Safefree($2); $2 = Nullch; - $$->arg_flags |= AF_DEPR; } - | AMPER WORD '(' ')' - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_WORD,stabent($2,MULTI)), - make_list(Nullarg), - Nullarg); - Safefree($2); $2 = Nullch; - } - | AMPER WORD - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_WORD,stabent($2,MULTI)), - Nullarg, - Nullarg); - Safefree($2); $2 = Nullch; - } - | DO REG '(' expr crp - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_STAB,$2), - make_list($4), - Nullarg); - $$->arg_flags |= AF_DEPR; } - | AMPER REG '(' expr crp - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_STAB,$2), - make_list($4), - Nullarg); } - | DO REG '(' ')' - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_STAB,$2), - make_list(Nullarg), - Nullarg); - $$->arg_flags |= AF_DEPR; } - | AMPER REG '(' ')' - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_STAB,$2), - make_list(Nullarg), - Nullarg); } - | AMPER REG - { $$ = make_op((perldb ? O_DBSUBR : O_SUBR), 2, - stab2arg(A_STAB,$2), - Nullarg, - Nullarg); } - | LOOPEX - { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } - | LOOPEX WORD - { $$ = make_op($1,1,cval_to_arg($2), - Nullarg,Nullarg); } - | UNIOP - { $$ = make_op($1,0,Nullarg,Nullarg,Nullarg); } - | UNIOP block - { $$ = make_op($1,1,cmd_to_arg($2),Nullarg,Nullarg); } - | UNIOP sexpr - { $$ = make_op($1,1,$2,Nullarg,Nullarg); } - | SSELECT - { $$ = make_op(O_SELECT, 0, Nullarg, Nullarg, Nullarg);} - | SSELECT WORD - { $$ = make_op(O_SELECT, 1, - stab2arg(A_WORD,stabent($2,TRUE)), - Nullarg, - Nullarg); - Safefree($2); $2 = Nullch; } - | SSELECT '(' handle ')' - { $$ = make_op(O_SELECT, 1, $3, Nullarg, Nullarg); } - | SSELECT '(' sexpr csexpr csexpr csexpr ')' - { arg4 = $6; - $$ = make_op(O_SSELECT, 4, $3, $4, $5); } - | OPEN WORD %prec '(' - { $$ = make_op(O_OPEN, 2, - stab2arg(A_WORD,stabent($2,TRUE)), - stab2arg(A_STAB,stabent($2,TRUE)), - Nullarg); - Safefree($2); $2 = Nullch; - } - | OPEN '(' WORD ')' - { $$ = make_op(O_OPEN, 2, - stab2arg(A_WORD,stabent($3,TRUE)), - stab2arg(A_STAB,stabent($3,TRUE)), - Nullarg); - Safefree($3); $3 = Nullch; - } - | OPEN '(' handle cexpr ')' - { $$ = make_op(O_OPEN, 2, - $3, - $4, Nullarg); } - | FILOP '(' handle ')' - { $$ = make_op($1, 1, - $3, - Nullarg, Nullarg); } - | FILOP WORD - { $$ = make_op($1, 1, - stab2arg(A_WORD,stabent($2,TRUE)), - Nullarg, Nullarg); - Safefree($2); $2 = Nullch; } - | FILOP REG - { $$ = make_op($1, 1, - stab2arg(A_STAB,$2), - Nullarg, Nullarg); } - | FILOP '(' ')' - { $$ = make_op($1, 1, - stab2arg(A_WORD,Nullstab), - Nullarg, Nullarg); } - | FILOP %prec '(' - { $$ = make_op($1, 0, - Nullarg, Nullarg, Nullarg); } - | FILOP2 '(' handle cexpr ')' - { $$ = make_op($1, 2, $3, $4, Nullarg); } - | FILOP3 '(' handle csexpr cexpr ')' - { $$ = make_op($1, 3, $3, $4, make_list($5)); } - | FILOP22 '(' handle ',' handle ')' - { $$ = make_op($1, 2, $3, $5, Nullarg); } - | FILOP4 '(' handle csexpr csexpr cexpr ')' - { arg4 = $6; $$ = make_op($1, 4, $3, $4, $5); } - | FILOP25 '(' handle ',' handle csexpr csexpr cexpr ')' - { arg4 = $7; arg5 = $8; - $$ = make_op($1, 5, $3, $5, $6); } - | PUSH '(' aryword ',' expr crp - { $$ = make_op($1, 2, - $3, - make_list($5), - Nullarg); } - | POP aryword %prec '(' - { $$ = make_op(O_POP, 1, $2, Nullarg, Nullarg); } - | POP '(' aryword ')' - { $$ = make_op(O_POP, 1, $3, Nullarg, Nullarg); } - | SHIFT aryword %prec '(' - { $$ = make_op(O_SHIFT, 1, $2, Nullarg, Nullarg); } - | SHIFT '(' aryword ')' - { $$ = make_op(O_SHIFT, 1, $3, Nullarg, Nullarg); } - | SHIFT %prec '(' - { $$ = make_op(O_SHIFT, 1, - stab2arg(A_STAB, - aadd(stabent(subline ? "_" : "ARGV", TRUE))), - Nullarg, Nullarg); } - | SPLIT %prec '(' - { static char p[]="/\\s+/"; - char *oldend = bufend; - ARG *oldarg = yylval.arg; - - bufend=p+5; - (void)scanpat(p); - bufend=oldend; - $$ = make_split(defstab,yylval.arg,Nullarg); - yylval.arg = oldarg; } - | SPLIT '(' sexpr csexpr csexpr ')' - { $$ = mod_match(O_MATCH, $4, - make_split(defstab,$3,$5));} - | SPLIT '(' sexpr csexpr ')' - { $$ = mod_match(O_MATCH, $4, - make_split(defstab,$3,Nullarg) ); } - | SPLIT '(' sexpr ')' - { $$ = mod_match(O_MATCH, - stab2arg(A_STAB,defstab), - make_split(defstab,$3,Nullarg) ); } - | FLIST2 '(' sexpr cexpr ')' - { $$ = make_op($1, 2, - $3, - listish(make_list($4)), - Nullarg); } - | FLIST '(' expr crp - { $$ = make_op($1, 1, - make_list($3), - Nullarg, - Nullarg); } - | LVALFUN sexpr %prec '(' - { $$ = l(make_op($1, 1, fixl($1,$2), - Nullarg, Nullarg)); } - | LVALFUN - { $$ = l(make_op($1, 1, - stab2arg(A_STAB,defstab), - Nullarg, Nullarg)); } - | FUNC0 - { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } - | FUNC0 '(' ')' - { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } - | FUNC1 '(' ')' - { $$ = make_op($1, 0, Nullarg, Nullarg, Nullarg); } - | FUNC1 '(' expr ')' - { $$ = make_op($1, 1, $3, Nullarg, Nullarg); } - | FUNC2 '(' sexpr cexpr ')' - { $$ = make_op($1, 2, $3, $4, Nullarg); - if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) - fbmcompile($$[2].arg_ptr.arg_str,0); } - | FUNC2x '(' sexpr csexpr ')' - { $$ = make_op($1, 2, $3, $4, Nullarg); - if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) - fbmcompile($$[2].arg_ptr.arg_str,0); } - | FUNC2x '(' sexpr csexpr cexpr ')' - { $$ = make_op($1, 3, $3, $4, $5); - if ($1 == O_INDEX && $$[2].arg_type == A_SINGLE) - fbmcompile($$[2].arg_ptr.arg_str,0); } - | FUNC3 '(' sexpr csexpr cexpr ')' - { $$ = make_op($1, 3, $3, $4, $5); } - | FUNC4 '(' sexpr csexpr csexpr cexpr ')' - { arg4 = $6; - $$ = make_op($1, 4, $3, $4, $5); } - | FUNC5 '(' sexpr csexpr csexpr csexpr cexpr ')' - { arg4 = $6; arg5 = $7; - $$ = make_op($1, 5, $3, $4, $5); } - | HSHFUN '(' hshword ')' - { $$ = make_op($1, 1, - $3, - Nullarg, - Nullarg); } - | HSHFUN hshword - { $$ = make_op($1, 1, - $2, - Nullarg, - Nullarg); } - | HSHFUN3 '(' hshword csexpr cexpr ')' - { $$ = make_op($1, 3, $3, $4, $5); } - | bareword - | listop - ; - -listop : LISTOP - { $$ = make_op($1,2, - stab2arg(A_WORD,Nullstab), - stab2arg(A_STAB,defstab), - Nullarg); } - | LISTOP expr - { $$ = make_op($1,2, - stab2arg(A_WORD,Nullstab), - maybelistish($1,make_list($2)), - Nullarg); } - | LISTOP WORD - { $$ = make_op($1,2, - stab2arg(A_WORD,stabent($2,TRUE)), - stab2arg(A_STAB,defstab), - Nullarg); - Safefree($2); $2 = Nullch; - } - | LISTOP WORD expr - { $$ = make_op($1,2, - stab2arg(A_WORD,stabent($2,TRUE)), - maybelistish($1,make_list($3)), - Nullarg); Safefree($2); $2 = Nullch; } - | LISTOP REG expr - { $$ = make_op($1,2, - stab2arg(A_STAB,$2), - maybelistish($1,make_list($3)), - Nullarg); } - | LISTOP block expr - { $$ = make_op($1,2, - cmd_to_arg($2), - maybelistish($1,make_list($3)), - Nullarg); } - ; - -handle : WORD - { $$ = stab2arg(A_WORD,stabent($1,TRUE)); - Safefree($1); $1 = Nullch;} - | sexpr - ; - -aryword : WORD - { $$ = stab2arg(A_WORD,aadd(stabent($1,TRUE))); - Safefree($1); $1 = Nullch; } - | ARY - { $$ = stab2arg(A_STAB,$1); } - ; - -hshword : WORD - { $$ = stab2arg(A_WORD,hadd(stabent($1,TRUE))); - Safefree($1); $1 = Nullch; } - | HSH - { $$ = stab2arg(A_STAB,$1); } - ; - -crp : ',' ')' - { $$ = 1; } - | ')' - { $$ = 0; } - ; - -/* - * NOTE: The following entry must stay at the end of the file so that - * reduce/reduce conflicts resolve to it only if it's the only option. - */ - -bareword: WORD - { char *s; - $$ = op_new(1); - $$->arg_type = O_ITEM; - $$[1].arg_type = A_SINGLE; - $$[1].arg_ptr.arg_str = str_make($1,0); - for (s = $1; *s && isLOWER(*s); s++) ; - if (dowarn && !*s) - warn( - "\"%s\" may clash with future reserved word", - $1 ); - Safefree($1); $1 = Nullch; - } - ; -%% /* PROGRAM */ |