-char rcsid[] = "$Header: perly.c,v 1.0 87/12/18 15:53:31 root Exp $";
-/*
- * $Log: perly.c,v $
- * Revision 1.0 87/12/18 15:53:31 root
- * Initial revision
+/* perly.c
+ *
+ * Copyright (c) 2004, 2005, 2006, 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.
*
+ * Note that this file was originally generated as an output from
+ * GNU bison version 1.875, but now the code is statically maintained
+ * and edited; the bits that are dependent on perly.y are now
+ * #included from the files perly.tab and perly.act.
+ *
+ * Here is an important copyright statement from the original, generated
+ * file:
+ *
+ * As a special exception, when this file is copied by Bison into a
+ * Bison output file, you may use that output file without
+ * restriction. This special exception was added by the Free
+ * Software Foundation in version 1.24 of Bison.
+ *
+ * Note that this file is also #included in madly.c, to allow compilation
+ * of a second parser, Perl_madparse, that is identical to Perl_yyparse,
+ * but which includes extra code for dumping the parse tree.
+ * This is controlled by the PERL_IN_MADLY_C define.
*/
-bool preprocess = FALSE;
-bool assume_n = FALSE;
-bool assume_p = FALSE;
-bool doswitches = FALSE;
-char *filename;
-char *e_tmpname = "/tmp/perl-eXXXXXX";
-FILE *e_fp = Nullfp;
-ARG *l();
-
-main(argc,argv,env)
-register int argc;
-register char **argv;
-register char **env;
-{
- register STR *str;
- register char *s;
- char *index();
-
- linestr = str_new(80);
- str = str_make("-I/usr/lib/perl "); /* first used for -I flags */
- for (argc--,argv++; argc; argc--,argv++) {
- if (argv[0][0] != '-' || !argv[0][1])
- break;
- reswitch:
- switch (argv[0][1]) {
-#ifdef DEBUGGING
- case 'D':
- debug = atoi(argv[0]+2);
+#include "EXTERN.h"
+#define PERL_IN_PERLY_C
+#include "perl.h"
+
+typedef unsigned char yytype_uint8;
+typedef signed char yytype_int8;
+typedef unsigned short int yytype_uint16;
+typedef short int yytype_int16;
+typedef signed char yysigned_char;
+
+/* YYINITDEPTH -- initial size of the parser's stacks. */
+#define YYINITDEPTH 200
+
#ifdef YYDEBUG
- yydebug = (debug & 1);
+# undef YYDEBUG
#endif
- break;
+#ifdef DEBUGGING
+# define YYDEBUG 1
+#else
+# define YYDEBUG 0
#endif
- case 'e':
- if (!e_fp) {
- mktemp(e_tmpname);
- e_fp = fopen(e_tmpname,"w");
- }
- if (argv[1])
- fputs(argv[1],e_fp);
- putc('\n', e_fp);
- argc--,argv++;
- break;
- case 'i':
- inplace = savestr(argv[0]+2);
- argvoutstab = stabent("ARGVOUT",TRUE);
- break;
- case 'I':
- str_cat(str,argv[0]);
- str_cat(str," ");
- if (!argv[0][2]) {
- str_cat(str,argv[1]);
- argc--,argv++;
- str_cat(str," ");
- }
- break;
- case 'n':
- assume_n = TRUE;
- strcpy(argv[0], argv[0]+1);
- goto reswitch;
- case 'p':
- assume_p = TRUE;
- strcpy(argv[0], argv[0]+1);
- goto reswitch;
- case 'P':
- preprocess = TRUE;
- strcpy(argv[0], argv[0]+1);
- goto reswitch;
- case 's':
- doswitches = TRUE;
- strcpy(argv[0], argv[0]+1);
- goto reswitch;
- case 'v':
- version();
- exit(0);
- case '-':
- argc--,argv++;
- goto switch_end;
- case 0:
- break;
- default:
- fatal("Unrecognized switch: %s\n",argv[0]);
- }
- }
- switch_end:
- if (e_fp) {
- fclose(e_fp);
- argc++,argv--;
- argv[0] = e_tmpname;
- }
- str_set(&str_no,No);
- str_set(&str_yes,Yes);
- init_eval();
-
- /* open script */
-
- if (argv[0] == Nullch)
- argv[0] = "-";
- filename = savestr(argv[0]);
- if (strEQ(filename,"-"))
- argv[0] = "";
- if (preprocess) {
- sprintf(buf, "\
-/bin/sed -e '/^[^#]/b' \
- -e '/^#[ ]*include[ ]/b' \
- -e '/^#[ ]*define[ ]/b' \
- -e '/^#[ ]*if[ ]/b' \
- -e '/^#[ ]*ifdef[ ]/b' \
- -e '/^#[ ]*else/b' \
- -e '/^#[ ]*endif/b' \
- -e 's/^#.*//' \
- %s | /lib/cpp -C %s-",
- argv[0], str_get(str));
- rsfp = popen(buf,"r");
- }
- else if (!*argv[0])
- rsfp = stdin;
- else
- rsfp = fopen(argv[0],"r");
- if (rsfp == Nullfp)
- fatal("Perl script \"%s\" doesn't seem to exist.\n",filename);
- str_free(str); /* free -I directories */
+#ifndef YY_NULL
+# define YY_NULL 0
+#endif
- defstab = stabent("_",TRUE);
+/* contains all the parser state tables; auto-generated from perly.y */
+#include "perly.tab"
- /* init tokener */
+# define YYSIZE_T size_t
- bufptr = str_get(linestr);
+#define YYEOF 0
+#define YYTERROR 1
- /* now parse the report spec */
+#define YYACCEPT goto yyacceptlab
+#define YYABORT goto yyabortlab
+#define YYERROR goto yyerrlab1
- if (yyparse())
- fatal("Execution aborted due to compilation errors.\n");
+/* Enable debugging if requested. */
+#ifdef DEBUGGING
- if (e_fp) {
- e_fp = Nullfp;
- UNLINK(e_tmpname);
- }
- argc--,argv++; /* skip name of script */
- if (doswitches) {
- for (; argc > 0 && **argv == '-'; argc--,argv++) {
- if (argv[0][1] == '-') {
- argc--,argv++;
- break;
- }
- str_numset(stabent(argv[0]+1,TRUE)->stab_val,(double)1.0);
- }
- }
- if (argvstab = stabent("ARGV",FALSE)) {
- for (; argc > 0; argc--,argv++) {
- apush(argvstab->stab_array,str_make(argv[0]));
- }
- }
- if (envstab = stabent("ENV",FALSE)) {
- for (; *env; env++) {
- if (!(s = index(*env,'=')))
- continue;
- *s++ = '\0';
- str = str_make(s);
- str->str_link.str_magic = envstab;
- hstore(envstab->stab_hash,*env,str);
- *--s = '=';
- }
- }
- sigstab = stabent("SIG",FALSE);
+# define yydebug (DEBUG_p_TEST)
- magicalize("!#?^~=-%0123456789.+&*(),\\/[|");
+# define YYFPRINTF PerlIO_printf
- (tmpstab = stabent("0",FALSE)) && str_set(STAB_STR(tmpstab),filename);
- (tmpstab = stabent("$",FALSE)) &&
- str_numset(STAB_STR(tmpstab),(double)getpid());
+# define YYDPRINTF(Args) \
+do { \
+ if (yydebug) \
+ YYFPRINTF Args; \
+} while (0)
- tmpstab = stabent("stdin",TRUE);
- tmpstab->stab_io = stio_new();
- tmpstab->stab_io->fp = stdin;
+# define YYDSYMPRINTF(Title, Token, Value) \
+do { \
+ if (yydebug) { \
+ YYFPRINTF (Perl_debug_log, "%s ", Title); \
+ yysymprint (aTHX_ Perl_debug_log, Token, Value); \
+ YYFPRINTF (Perl_debug_log, "\n"); \
+ } \
+} while (0)
- tmpstab = stabent("stdout",TRUE);
- tmpstab->stab_io = stio_new();
- tmpstab->stab_io->fp = stdout;
- defoutstab = tmpstab;
- curoutstab = tmpstab;
+/*--------------------------------.
+| Print this symbol on YYOUTPUT. |
+`--------------------------------*/
- tmpstab = stabent("stderr",TRUE);
- tmpstab->stab_io = stio_new();
- tmpstab->stab_io->fp = stderr;
+static void
+yysymprint(pTHX_ PerlIO * const yyoutput, int yytype, const YYSTYPE * const yyvaluep)
+{
+ if (yytype < YYNTOKENS) {
+ YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
+# ifdef YYPRINT
+ YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
+# else
+ YYFPRINTF (yyoutput, "0x%"UVxf, (UV)yyvaluep->ival);
+# endif
+ }
+ else
+ YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
- setjmp(top_env); /* sets goto_targ on longjump */
+ YYFPRINTF (yyoutput, ")");
+}
-#ifdef DEBUGGING
- if (debug & 1024)
- dump_cmd(main_root,Nullcmd);
- if (debug)
- fprintf(stderr,"\nEXECUTING...\n\n");
-#endif
- /* do it */
+/* yy_stack_print()
+ * print the top 8 items on the parse stack.
+ */
- (void) cmd_exec(main_root);
+static void
+yy_stack_print (pTHX_ const yy_parser *parser)
+{
+ const yy_stack_frame *ps, *min;
- if (goto_targ)
- fatal("Can't find label \"%s\"--aborting.\n",goto_targ);
- exit(0);
-}
+ min = parser->ps - 8 + 1;
+ if (min <= parser->stack)
+ min = parser->stack + 1;
-magicalize(list)
-register char *list;
-{
- register STAB *stab;
- char sym[2];
-
- sym[1] = '\0';
- while (*sym = *list++) {
- if (stab = stabent(sym,FALSE)) {
- stab->stab_flags = SF_VMAGIC;
- stab->stab_val->str_link.str_magic = stab;
- }
- }
-}
+ PerlIO_printf(Perl_debug_log, "\nindex:");
+ for (ps = min; ps <= parser->ps; ps++)
+ PerlIO_printf(Perl_debug_log, " %8d", (int)(ps - parser->stack));
-#define RETURN(retval) return (bufptr = s,retval)
-#define OPERATOR(retval) return (expectterm = TRUE,bufptr = s,retval)
-#define TERM(retval) return (expectterm = FALSE,bufptr = s,retval)
-#define LOOPX(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,LOOPEX)
-#define UNI(f) return (yylval.ival = f,expectterm = TRUE,bufptr = s,UNIOP)
-#define FUN0(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC0)
-#define FUN1(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC1)
-#define FUN2(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC2)
-#define FUN3(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,FUNC3)
-#define SFUN(f) return (yylval.ival = f,expectterm = FALSE,bufptr = s,STABFUN)
-
-yylex()
-{
- register char *s = bufptr;
- register char *d;
- register int tmp;
- static bool in_format = FALSE;
- static bool firstline = TRUE;
+ PerlIO_printf(Perl_debug_log, "\nstate:");
+ for (ps = min; ps <= parser->ps; ps++)
+ PerlIO_printf(Perl_debug_log, " %8d", ps->state);
- retry:
-#ifdef YYDEBUG
- if (yydebug)
- if (index(s,'\n'))
- fprintf(stderr,"Tokener at %s",s);
- else
- fprintf(stderr,"Tokener at %s\n",s);
-#endif
- switch (*s) {
- default:
- fprintf(stderr,
- "Unrecognized character %c in file %s line %d--ignoring.\n",
- *s++,filename,line);
- goto retry;
- case 0:
- s = str_get(linestr);
- *s = '\0';
- if (firstline && (assume_n || assume_p)) {
- firstline = FALSE;
- str_set(linestr,"while (<>) {");
- s = str_get(linestr);
- goto retry;
- }
- if (!rsfp)
- RETURN(0);
- if (in_format) {
- yylval.formval = load_format(); /* leaves . in buffer */
- in_format = FALSE;
- s = str_get(linestr);
- TERM(FORMLIST);
- }
- line++;
- if ((s = str_gets(linestr, rsfp)) == Nullch) {
- if (preprocess)
- pclose(rsfp);
- else if (rsfp != stdin)
- fclose(rsfp);
- rsfp = Nullfp;
- if (assume_n || assume_p) {
- str_set(linestr,assume_p ? "}continue{print;" : "");
- str_cat(linestr,"}");
- s = str_get(linestr);
- goto retry;
- }
- s = str_get(linestr);
- RETURN(0);
- }
-#ifdef DEBUG
- else if (firstline) {
- char *showinput();
- s = showinput();
- }
+ PerlIO_printf(Perl_debug_log, "\ntoken:");
+ for (ps = min; ps <= parser->ps; ps++)
+ PerlIO_printf(Perl_debug_log, " %8.8s", ps->name);
+
+ PerlIO_printf(Perl_debug_log, "\nvalue:");
+ for (ps = min; ps <= parser->ps; ps++) {
+ switch (yy_type_tab[yystos[ps->state]]) {
+ case toketype_opval:
+ PerlIO_printf(Perl_debug_log, " %8.8s",
+ ps->val.opval
+ ? PL_op_name[ps->val.opval->op_type]
+ : "(Nullop)"
+ );
+ break;
+#ifndef PERL_IN_MADLY_C
+ case toketype_i_tkval:
#endif
- firstline = FALSE;
- goto retry;
- case ' ': case '\t':
- s++;
- goto retry;
- case '\n':
- case '#':
- if (preprocess && s == str_get(linestr) &&
- s[1] == ' ' && isdigit(s[2])) {
- line = atoi(s+2)-1;
- for (s += 2; isdigit(*s); s++) ;
- while (*s && isspace(*s)) s++;
- if (filename)
- safefree(filename);
- s[strlen(s)-1] = '\0'; /* wipe out newline */
- filename = savestr(s);
- s = str_get(linestr);
- }
- *s = '\0';
- if (lex_newlines)
- RETURN('\n');
- goto retry;
- case '+':
- case '-':
- if (s[1] == *s) {
- s++;
- if (*s++ == '+')
- RETURN(INC);
- else
- RETURN(DEC);
- }
- /* FALL THROUGH */
- case '*':
- case '%':
- case '^':
- case '~':
- case '(':
- case ',':
- case ':':
- case ';':
- case '{':
- case '[':
- tmp = *s++;
- OPERATOR(tmp);
- case ')':
- case ']':
- case '}':
- tmp = *s++;
- TERM(tmp);
- case '&':
- s++;
- tmp = *s++;
- if (tmp == '&')
- OPERATOR(ANDAND);
- s--;
- OPERATOR('&');
- case '|':
- s++;
- tmp = *s++;
- if (tmp == '|')
- OPERATOR(OROR);
- s--;
- OPERATOR('|');
- case '=':
- s++;
- tmp = *s++;
- if (tmp == '=')
- OPERATOR(EQ);
- if (tmp == '~')
- OPERATOR(MATCH);
- s--;
- OPERATOR('=');
- case '!':
- s++;
- tmp = *s++;
- if (tmp == '=')
- OPERATOR(NE);
- if (tmp == '~')
- OPERATOR(NMATCH);
- s--;
- OPERATOR('!');
- case '<':
- if (expectterm) {
- s = scanstr(s);
- TERM(RSTRING);
- }
- s++;
- tmp = *s++;
- if (tmp == '<')
- OPERATOR(LS);
- if (tmp == '=')
- OPERATOR(LE);
- s--;
- OPERATOR('<');
- case '>':
- s++;
- tmp = *s++;
- if (tmp == '>')
- OPERATOR(RS);
- if (tmp == '=')
- OPERATOR(GE);
- s--;
- OPERATOR('>');
-
-#define SNARFWORD \
- d = tokenbuf; \
- while (isalpha(*s) || isdigit(*s) || *s == '_') \
- *d++ = *s++; \
- *d = '\0'; \
- d = tokenbuf;
-
- case '$':
- if (s[1] == '#' && (isalpha(s[2]) || s[2] == '_')) {
- s++;
- s = scanreg(s,tokenbuf);
- yylval.stabval = aadd(stabent(tokenbuf,TRUE));
- TERM(ARYLEN);
- }
- s = scanreg(s,tokenbuf);
- yylval.stabval = stabent(tokenbuf,TRUE);
- TERM(REG);
-
- case '@':
- s = scanreg(s,tokenbuf);
- yylval.stabval = aadd(stabent(tokenbuf,TRUE));
- TERM(ARY);
-
- case '/': /* may either be division or pattern */
- case '?': /* may either be conditional or pattern */
- if (expectterm) {
- s = scanpat(s);
- TERM(PATTERN);
- }
- tmp = *s++;
- OPERATOR(tmp);
-
- case '.':
- if (!expectterm || !isdigit(s[1])) {
- s++;
- tmp = *s++;
- if (tmp == '.')
- OPERATOR(DOTDOT);
- s--;
- OPERATOR('.');
- }
- /* FALL THROUGH */
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- case '\'': case '"': case '`':
- s = scanstr(s);
- TERM(RSTRING);
-
- case '_':
- SNARFWORD;
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'a': case 'A':
- SNARFWORD;
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'b': case 'B':
- SNARFWORD;
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'c': case 'C':
- SNARFWORD;
- if (strEQ(d,"continue"))
- OPERATOR(CONTINUE);
- if (strEQ(d,"chdir"))
- UNI(O_CHDIR);
- if (strEQ(d,"close"))
- OPERATOR(CLOSE);
- if (strEQ(d,"crypt"))
- FUN2(O_CRYPT);
- if (strEQ(d,"chop"))
- OPERATOR(CHOP);
- if (strEQ(d,"chmod")) {
- yylval.ival = O_CHMOD;
- OPERATOR(PRINT);
- }
- if (strEQ(d,"chown")) {
- yylval.ival = O_CHOWN;
- OPERATOR(PRINT);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'd': case 'D':
- SNARFWORD;
- if (strEQ(d,"do"))
- OPERATOR(DO);
- if (strEQ(d,"die"))
- UNI(O_DIE);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'e': case 'E':
- SNARFWORD;
- if (strEQ(d,"else"))
- OPERATOR(ELSE);
- if (strEQ(d,"elsif"))
- OPERATOR(ELSIF);
- if (strEQ(d,"eq") || strEQ(d,"EQ"))
- OPERATOR(SEQ);
- if (strEQ(d,"exit"))
- UNI(O_EXIT);
- if (strEQ(d,"eof"))
- TERM(FEOF);
- if (strEQ(d,"exp"))
- FUN1(O_EXP);
- if (strEQ(d,"each"))
- SFUN(O_EACH);
- if (strEQ(d,"exec")) {
- yylval.ival = O_EXEC;
- OPERATOR(PRINT);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'f': case 'F':
- SNARFWORD;
- if (strEQ(d,"for"))
- OPERATOR(FOR);
- if (strEQ(d,"format")) {
- in_format = TRUE;
- OPERATOR(FORMAT);
- }
- if (strEQ(d,"fork"))
- FUN0(O_FORK);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'g': case 'G':
- SNARFWORD;
- if (strEQ(d,"gt") || strEQ(d,"GT"))
- OPERATOR(SGT);
- if (strEQ(d,"ge") || strEQ(d,"GE"))
- OPERATOR(SGE);
- if (strEQ(d,"goto"))
- LOOPX(O_GOTO);
- if (strEQ(d,"gmtime"))
- FUN1(O_GMTIME);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'h': case 'H':
- SNARFWORD;
- if (strEQ(d,"hex"))
- FUN1(O_HEX);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'i': case 'I':
- SNARFWORD;
- if (strEQ(d,"if"))
- OPERATOR(IF);
- if (strEQ(d,"index"))
- FUN2(O_INDEX);
- if (strEQ(d,"int"))
- FUN1(O_INT);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'j': case 'J':
- SNARFWORD;
- if (strEQ(d,"join"))
- OPERATOR(JOIN);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'k': case 'K':
- SNARFWORD;
- if (strEQ(d,"keys"))
- SFUN(O_KEYS);
- if (strEQ(d,"kill")) {
- yylval.ival = O_KILL;
- OPERATOR(PRINT);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'l': case 'L':
- SNARFWORD;
- if (strEQ(d,"last"))
- LOOPX(O_LAST);
- if (strEQ(d,"length"))
- FUN1(O_LENGTH);
- if (strEQ(d,"lt") || strEQ(d,"LT"))
- OPERATOR(SLT);
- if (strEQ(d,"le") || strEQ(d,"LE"))
- OPERATOR(SLE);
- if (strEQ(d,"localtime"))
- FUN1(O_LOCALTIME);
- if (strEQ(d,"log"))
- FUN1(O_LOG);
- if (strEQ(d,"link"))
- FUN2(O_LINK);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'm': case 'M':
- SNARFWORD;
- if (strEQ(d,"m")) {
- s = scanpat(s-1);
- TERM(PATTERN);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'n': case 'N':
- SNARFWORD;
- if (strEQ(d,"next"))
- LOOPX(O_NEXT);
- if (strEQ(d,"ne") || strEQ(d,"NE"))
- OPERATOR(SNE);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'o': case 'O':
- SNARFWORD;
- if (strEQ(d,"open"))
- OPERATOR(OPEN);
- if (strEQ(d,"ord"))
- FUN1(O_ORD);
- if (strEQ(d,"oct"))
- FUN1(O_OCT);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'p': case 'P':
- SNARFWORD;
- if (strEQ(d,"print")) {
- yylval.ival = O_PRINT;
- OPERATOR(PRINT);
- }
- if (strEQ(d,"printf")) {
- yylval.ival = O_PRTF;
- OPERATOR(PRINT);
- }
- if (strEQ(d,"push")) {
- yylval.ival = O_PUSH;
- OPERATOR(PUSH);
- }
- if (strEQ(d,"pop"))
- OPERATOR(POP);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'q': case 'Q':
- SNARFWORD;
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'r': case 'R':
- SNARFWORD;
- if (strEQ(d,"reset"))
- UNI(O_RESET);
- if (strEQ(d,"redo"))
- LOOPX(O_REDO);
- if (strEQ(d,"rename"))
- FUN2(O_RENAME);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 's': case 'S':
- SNARFWORD;
- if (strEQ(d,"s")) {
- s = scansubst(s);
- TERM(SUBST);
- }
- if (strEQ(d,"shift"))
- TERM(SHIFT);
- if (strEQ(d,"split"))
- TERM(SPLIT);
- if (strEQ(d,"substr"))
- FUN3(O_SUBSTR);
- if (strEQ(d,"sprintf"))
- OPERATOR(SPRINTF);
- if (strEQ(d,"sub"))
- OPERATOR(SUB);
- if (strEQ(d,"select"))
- OPERATOR(SELECT);
- if (strEQ(d,"seek"))
- OPERATOR(SEEK);
- if (strEQ(d,"stat"))
- OPERATOR(STAT);
- if (strEQ(d,"sqrt"))
- FUN1(O_SQRT);
- if (strEQ(d,"sleep"))
- UNI(O_SLEEP);
- if (strEQ(d,"system")) {
- yylval.ival = O_SYSTEM;
- OPERATOR(PRINT);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 't': case 'T':
- SNARFWORD;
- if (strEQ(d,"tr")) {
- s = scantrans(s);
- TERM(TRANS);
- }
- if (strEQ(d,"tell"))
- TERM(TELL);
- if (strEQ(d,"time"))
- FUN0(O_TIME);
- if (strEQ(d,"times"))
- FUN0(O_TMS);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'u': case 'U':
- SNARFWORD;
- if (strEQ(d,"using"))
- OPERATOR(USING);
- if (strEQ(d,"until"))
- OPERATOR(UNTIL);
- if (strEQ(d,"unless"))
- OPERATOR(UNLESS);
- if (strEQ(d,"umask"))
- FUN1(O_UMASK);
- if (strEQ(d,"unshift")) {
- yylval.ival = O_UNSHIFT;
- OPERATOR(PUSH);
- }
- if (strEQ(d,"unlink")) {
- yylval.ival = O_UNLINK;
- OPERATOR(PRINT);
- }
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'v': case 'V':
- SNARFWORD;
- if (strEQ(d,"values"))
- SFUN(O_VALUES);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'w': case 'W':
- SNARFWORD;
- if (strEQ(d,"write"))
- TERM(WRITE);
- if (strEQ(d,"while"))
- OPERATOR(WHILE);
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'x': case 'X':
- SNARFWORD;
- if (!expectterm && strEQ(d,"x"))
- OPERATOR('x');
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'y': case 'Y':
- SNARFWORD;
- if (strEQ(d,"y")) {
- s = scantrans(s);
- TERM(TRANS);
+ case toketype_ival:
+ PerlIO_printf(Perl_debug_log, " %8"IVdf, (IV)ps->val.ival);
+ break;
+ default:
+ PerlIO_printf(Perl_debug_log, " %8"UVxf, (UV)ps->val.ival);
}
- yylval.cval = savestr(d);
- OPERATOR(WORD);
- case 'z': case 'Z':
- SNARFWORD;
- yylval.cval = savestr(d);
- OPERATOR(WORD);
}
+ PerlIO_printf(Perl_debug_log, "\n\n");
}
-STAB *
-stabent(name,add)
-register char *name;
-int add;
-{
- register STAB *stab;
+# define YY_STACK_PRINT(parser) \
+do { \
+ if (yydebug && DEBUG_v_TEST) \
+ yy_stack_print (aTHX_ parser); \
+} while (0)
- for (stab = stab_index[*name]; stab; stab = stab->stab_next) {
- if (strEQ(name,stab->stab_name))
- return stab;
- }
-
- /* no entry--should we add one? */
-
- if (add) {
- stab = (STAB *) safemalloc(sizeof(STAB));
- bzero((char*)stab, sizeof(STAB));
- stab->stab_name = savestr(name);
- stab->stab_val = str_new(0);
- stab->stab_next = stab_index[*name];
- stab_index[*name] = stab;
- return stab;
- }
- return Nullstab;
-}
-STIO *
-stio_new()
-{
- STIO *stio = (STIO *) safemalloc(sizeof(STIO));
+/*------------------------------------------------.
+| Report that the YYRULE is going to be reduced. |
+`------------------------------------------------*/
- bzero((char*)stio, sizeof(STIO));
- stio->page_len = 60;
- return stio;
-}
-
-char *
-scanreg(s,dest)
-register char *s;
-char *dest;
+static void
+yy_reduce_print (pTHX_ int yyrule)
{
- register char *d;
-
- s++;
- d = dest;
- while (isalpha(*s) || isdigit(*s) || *s == '_')
- *d++ = *s++;
- *d = '\0';
- d = dest;
- if (!*d) {
- *d = *s++;
- if (*d == '{') {
- d = dest;
- while (*s && *s != '}')
- *d++ = *s++;
- *d = '\0';
- d = dest;
- if (*s)
- s++;
- }
- else
- d[1] = '\0';
- }
- if (*d == '^' && !isspace(*s))
- *d = *s++ & 31;
- return s;
+ int yyi;
+ const unsigned int yylineno = yyrline[yyrule];
+ YYFPRINTF (Perl_debug_log, "Reducing stack by rule %d (line %u), ",
+ yyrule - 1, yylineno);
+ /* Print the symbols being reduced, and their result. */
+ for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
+ YYFPRINTF (Perl_debug_log, "%s ", yytname [yyrhs[yyi]]);
+ YYFPRINTF (Perl_debug_log, "-> %s\n", yytname [yyr1[yyrule]]);
}
-STR *
-scanconst(string)
-char *string;
-{
- register STR *retstr;
- register char *t;
- register char *d;
+# define YY_REDUCE_PRINT(Rule) \
+do { \
+ if (yydebug) \
+ yy_reduce_print (aTHX_ Rule); \
+} while (0)
- if (index(string,'|')) {
- return Nullstr;
- }
- retstr = str_make(string);
- t = str_get(retstr);
- for (d=t; *d; ) {
- switch (*d) {
- case '.': case '[': case '$': case '(': case ')': case '|':
- *d = '\0';
- break;
- case '\\':
- if (index("wWbB0123456789",d[1])) {
- *d = '\0';
- break;
- }
- strcpy(d,d+1);
- switch(*d) {
- case 'n':
- *d = '\n';
- break;
- case 't':
- *d = '\t';
- break;
- case 'f':
- *d = '\f';
- break;
- case 'r':
- *d = '\r';
- break;
- }
- /* FALL THROUGH */
- default:
- if (d[1] == '*' || d[1] == '+' || d[1] == '?') {
- *d = '\0';
- break;
- }
- d++;
- }
- }
- if (!*t) {
- str_free(retstr);
- return Nullstr;
- }
- retstr->str_cur = strlen(retstr->str_ptr); /* XXX cheating here */
- return retstr;
-}
+#else /* !DEBUGGING */
+# define YYDPRINTF(Args)
+# define YYDSYMPRINTF(Title, Token, Value)
+# define YY_STACK_PRINT(parser)
+# define YY_REDUCE_PRINT(Rule)
+#endif /* !DEBUGGING */
-char *
-scanpat(s)
-register char *s;
-{
- register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT));
- register char *d;
-
- bzero((char *)spat, sizeof(SPAT));
- spat->spat_next = spat_root; /* link into spat list */
- spat_root = spat;
- init_compex(&spat->spat_compex);
-
- switch (*s++) {
- case 'm':
- s++;
- break;
- case '/':
- break;
- case '?':
- spat->spat_flags |= SPAT_USE_ONCE;
- break;
- default:
- fatal("Search pattern not found:\n%s",str_get(linestr));
- }
- s = cpytill(tokenbuf,s,s[-1]);
- if (!*s)
- fatal("Search pattern not terminated:\n%s",str_get(linestr));
- s++;
- if (*tokenbuf == '^') {
- spat->spat_first = scanconst(tokenbuf+1);
- if (spat->spat_first) {
- spat->spat_flen = strlen(spat->spat_first->str_ptr);
- if (spat->spat_flen == strlen(tokenbuf+1))
- spat->spat_flags |= SPAT_SCANALL;
- }
- }
- else {
- spat->spat_flags |= SPAT_SCANFIRST;
- spat->spat_first = scanconst(tokenbuf);
- if (spat->spat_first) {
- spat->spat_flen = strlen(spat->spat_first->str_ptr);
- if (spat->spat_flen == strlen(tokenbuf))
- spat->spat_flags |= SPAT_SCANALL;
- }
- }
- if (d = compile(&spat->spat_compex,tokenbuf,TRUE,FALSE))
- fatal(d);
- yylval.arg = make_match(O_MATCH,stab_to_arg(A_STAB,defstab),spat);
- return s;
-}
+/* called during cleanup (via SAVEDESTRUCTOR_X) to free any items on the
+ * parse stack, thus avoiding leaks if we die */
-char *
-scansubst(s)
-register char *s;
+static void
+S_clear_yystack(pTHX_ const yy_parser *parser)
{
- register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT));
- register char *d;
-
- bzero((char *)spat, sizeof(SPAT));
- spat->spat_next = spat_root; /* link into spat list */
- spat_root = spat;
- init_compex(&spat->spat_compex);
-
- s = cpytill(tokenbuf,s+1,*s);
- if (!*s)
- fatal("Substitution pattern not terminated:\n%s",str_get(linestr));
- for (d=tokenbuf; *d; d++) {
- if (*d == '$' && d[1] && d[-1] != '\\' && d[1] != '|') {
- register ARG *arg;
-
- spat->spat_runtime = arg = op_new(1);
- arg->arg_type = O_ITEM;
- arg[1].arg_type = A_DOUBLE;
- arg[1].arg_ptr.arg_str = str_make(tokenbuf);
- goto get_repl; /* skip compiling for now */
- }
- }
- if (*tokenbuf == '^') {
- spat->spat_first = scanconst(tokenbuf+1);
- if (spat->spat_first)
- spat->spat_flen = strlen(spat->spat_first->str_ptr);
- }
- else {
- spat->spat_flags |= SPAT_SCANFIRST;
- spat->spat_first = scanconst(tokenbuf);
- if (spat->spat_first)
- spat->spat_flen = strlen(spat->spat_first->str_ptr);
- }
- if (d = compile(&spat->spat_compex,tokenbuf,TRUE,FALSE))
- fatal(d);
-get_repl:
- s = scanstr(s);
- if (!*s)
- fatal("Substitution replacement not terminated:\n%s",str_get(linestr));
- spat->spat_repl = yylval.arg;
- if (*s == 'g') {
- s++;
- spat->spat_flags &= ~SPAT_USE_ONCE;
- }
- else
- spat->spat_flags |= SPAT_USE_ONCE;
- yylval.arg = make_match(O_SUBST,stab_to_arg(A_STAB,defstab),spat);
- return s;
-}
+ yy_stack_frame *ps = parser->ps;
+ int i = 0;
-ARG *
-make_split(stab,arg)
-register STAB *stab;
-register ARG *arg;
-{
- if (arg->arg_type != O_MATCH) {
- register SPAT *spat = (SPAT *) safemalloc(sizeof (SPAT));
- register char *d;
+ if (!parser->stack)
+ return;
- bzero((char *)spat, sizeof(SPAT));
- spat->spat_next = spat_root; /* link into spat list */
- spat_root = spat;
- init_compex(&spat->spat_compex);
+ YYDPRINTF ((Perl_debug_log, "clearing the parse stack\n"));
- spat->spat_runtime = arg;
- arg = make_match(O_MATCH,stab_to_arg(A_STAB,defstab),spat);
+ for (i=0; i< parser->yylen; i++) {
+ SvREFCNT_dec(ps[-i].compcv);
}
- arg->arg_type = O_SPLIT;
- arg[2].arg_ptr.arg_spat->spat_repl = stab_to_arg(A_STAB,aadd(stab));
- return arg;
-}
+ ps -= parser->yylen;
-char *
-expand_charset(s)
-register char *s;
-{
- char t[512];
- register char *d = t;
- register int i;
-
- while (*s) {
- if (s[1] == '-' && s[2]) {
- for (i = s[0]; i <= s[2]; i++)
- *d++ = i;
- s += 3;
+ /* now free whole the stack, including the just-reduced ops */
+
+ while (ps > parser->stack) {
+ LEAVE_SCOPE(ps->savestack_ix);
+ if (yy_type_tab[yystos[ps->state]] == toketype_opval
+ && ps->val.opval)
+ {
+ if (ps->compcv != PL_compcv) {
+ PL_compcv = ps->compcv;
+ PAD_SET_CUR_NOSAVE(CvPADLIST(PL_compcv), 1);
+ PL_comppad_name = PadlistNAMES(CvPADLIST(PL_compcv));
+ }
+ YYDPRINTF ((Perl_debug_log, "(freeing op)\n"));
+ op_free(ps->val.opval);
}
- else
- *d++ = *s++;
+ SvREFCNT_dec(ps->compcv);
+ ps--;
}
- *d = '\0';
- return savestr(t);
-}
-char *
-scantrans(s)
-register char *s;
-{
- ARG *arg =
- l(make_op(O_TRANS,2,stab_to_arg(A_STAB,defstab),Nullarg,Nullarg,0));
- register char *t;
- register char *r;
- register char *tbl = safemalloc(256);
- register int i;
-
- arg[2].arg_type = A_NULL;
- arg[2].arg_ptr.arg_cval = tbl;
- for (i=0; i<256; i++)
- tbl[i] = 0;
- s = scanstr(s);
- if (!*s)
- fatal("Translation pattern not terminated:\n%s",str_get(linestr));
- t = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str));
- free_arg(yylval.arg);
- s = scanstr(s-1);
- if (!*s)
- fatal("Translation replacement not terminated:\n%s",str_get(linestr));
- r = expand_charset(str_get(yylval.arg[1].arg_ptr.arg_str));
- free_arg(yylval.arg);
- yylval.arg = arg;
- if (!*r) {
- safefree(r);
- r = t;
- }
- for (i = 0; t[i]; i++) {
- if (!r[i])
- r[i] = r[i-1];
- tbl[t[i] & 0377] = r[i];
- }
- if (r != t)
- safefree(r);
- safefree(t);
- return s;
+ Safefree(parser->stack);
}
-CMD *
-block_head(tail)
-register CMD *tail;
-{
- if (tail == Nullcmd) {
- return tail;
- }
- return tail->c_head;
-}
-CMD *
-append_line(head,tail)
-register CMD *head;
-register CMD *tail;
-{
- if (tail == Nullcmd)
- return head;
- if (!tail->c_head) /* make sure tail is well formed */
- tail->c_head = tail;
- if (head != Nullcmd) {
- tail = tail->c_head; /* get to start of tail list */
- if (!head->c_head)
- head->c_head = head; /* start a new head list */
- while (head->c_next) {
- head->c_next->c_head = head->c_head;
- head = head->c_next; /* get to end of head list */
- }
- head->c_next = tail; /* link to end of old list */
- tail->c_head = head->c_head; /* propagate head pointer */
- }
- while (tail->c_next) {
- tail->c_next->c_head = tail->c_head;
- tail = tail->c_next;
- }
- return tail;
-}
+/*----------.
+| yyparse. |
+`----------*/
-CMD *
-make_acmd(type,stab,cond,arg)
-int type;
-STAB *stab;
-ARG *cond;
-ARG *arg;
+int
+#ifdef PERL_IN_MADLY_C
+Perl_madparse (pTHX_ int gramtype)
+#else
+Perl_yyparse (pTHX_ int gramtype)
+#endif
{
- register CMD *cmd = (CMD *) safemalloc(sizeof (CMD));
-
- bzero((char *)cmd, sizeof(CMD));
- cmd->c_type = type;
- cmd->ucmd.acmd.ac_stab = stab;
- cmd->ucmd.acmd.ac_expr = arg;
- cmd->c_expr = cond;
- if (cond) {
- opt_arg(cmd,1);
- cmd->c_flags |= CF_COND;
- }
- return cmd;
-}
+ dVAR;
+ int yystate;
+ int yyn;
+ int yyresult;
-CMD *
-make_ccmd(type,arg,cblock)
-int type;
-register ARG *arg;
-struct compcmd cblock;
-{
- register CMD *cmd = (CMD *) safemalloc(sizeof (CMD));
-
- bzero((char *)cmd, sizeof(CMD));
- cmd->c_type = type;
- cmd->c_expr = arg;
- cmd->ucmd.ccmd.cc_true = cblock.comp_true;
- cmd->ucmd.ccmd.cc_alt = cblock.comp_alt;
- if (arg) {
- opt_arg(cmd,1);
- cmd->c_flags |= CF_COND;
- }
- return cmd;
-}
+ /* Lookahead token as an internal (translated) token number. */
+ int yytoken = 0;
-void
-opt_arg(cmd,fliporflop)
-register CMD *cmd;
-int fliporflop;
-{
- register ARG *arg;
- int opt = CFT_EVAL;
- int sure = 0;
- ARG *arg2;
- char *tmps; /* for True macro */
- int context = 0; /* 0 = normal, 1 = before &&, 2 = before || */
- int flp = fliporflop;
-
- if (!cmd)
- return;
- arg = cmd->c_expr;
+ yy_parser *parser; /* the parser object */
+ yy_stack_frame *ps; /* current parser stack frame */
- /* Turn "if (!expr)" into "unless (expr)" */
+#define YYPOPSTACK parser->ps = --ps
+#define YYPUSHSTACK parser->ps = ++ps
- while (arg->arg_type == O_NOT && arg[1].arg_type == A_EXPR) {
- cmd->c_flags ^= CF_INVERT; /* flip sense of cmd */
- cmd->c_expr = arg[1].arg_ptr.arg_arg; /* hoist the rest of expr */
- free_arg(arg);
- arg = cmd->c_expr; /* here we go again */
- }
+ /* The variable used to return semantic value and location from the
+ action routines: ie $$. */
+ YYSTYPE yyval;
- if (!arg->arg_len) { /* sanity check */
- cmd->c_flags |= opt;
- return;
- }
+#ifndef PERL_IN_MADLY_C
+# ifdef PERL_MAD
+ if (PL_madskills)
+ return madparse(gramtype);
+# endif
+#endif
- /* for "cond .. cond" we set up for the initial check */
+ YYDPRINTF ((Perl_debug_log, "Starting parse\n"));
- if (arg->arg_type == O_FLIP)
- context |= 4;
+ parser = PL_parser;
- /* for "cond && expr" and "cond || expr" we can ignore expr, sort of */
+ ENTER; /* force parser state cleanup/restoration before we return */
+ SAVEPPTR(parser->yylval.pval);
+ SAVEINT(parser->yychar);
+ SAVEINT(parser->yyerrstatus);
+ SAVEINT(parser->stack_size);
+ SAVEINT(parser->yylen);
+ SAVEVPTR(parser->stack);
+ SAVEVPTR(parser->ps);
- if (arg->arg_type == O_AND)
- context |= 1;
- else if (arg->arg_type == O_OR)
- context |= 2;
- if (context && arg[flp].arg_type == A_EXPR) {
- arg = arg[flp].arg_ptr.arg_arg;
- flp = 1;
- }
+ /* initialise state for this parse */
+ parser->yychar = gramtype;
+ parser->yyerrstatus = 0;
+ parser->stack_size = YYINITDEPTH;
+ parser->yylen = 0;
+ Newx(parser->stack, YYINITDEPTH, yy_stack_frame);
+ ps = parser->ps = parser->stack;
+ ps->state = 0;
+ SAVEDESTRUCTOR_X(S_clear_yystack, parser);
- if (arg[flp].arg_flags & (AF_PRE|AF_POST)) {
- cmd->c_flags |= opt;
- return; /* side effect, can't optimize */
- }
+/*------------------------------------------------------------.
+| yynewstate -- Push a new state, which is found in yystate. |
+`------------------------------------------------------------*/
+ yynewstate:
- if (arg->arg_type == O_ITEM || arg->arg_type == O_FLIP ||
- arg->arg_type == O_AND || arg->arg_type == O_OR) {
- if (arg[flp].arg_type == A_SINGLE) {
- opt = (str_true(arg[flp].arg_ptr.arg_str) ? CFT_TRUE : CFT_FALSE);
- cmd->c_first = arg[flp].arg_ptr.arg_str;
- goto literal;
- }
- else if (arg[flp].arg_type == A_STAB || arg[flp].arg_type == A_LVAL) {
- cmd->c_stab = arg[flp].arg_ptr.arg_stab;
- opt = CFT_REG;
- literal:
- if (!context) { /* no && or ||? */
- free_arg(arg);
- cmd->c_expr = Nullarg;
- }
- if (!(context & 1))
- cmd->c_flags |= CF_EQSURE;
- if (!(context & 2))
- cmd->c_flags |= CF_NESURE;
- }
- }
- else if (arg->arg_type == O_MATCH || arg->arg_type == O_SUBST ||
- arg->arg_type == O_NMATCH || arg->arg_type == O_NSUBST) {
- if ((arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) &&
- arg[2].arg_type == A_SPAT &&
- arg[2].arg_ptr.arg_spat->spat_first ) {
- cmd->c_stab = arg[1].arg_ptr.arg_stab;
- cmd->c_first = arg[2].arg_ptr.arg_spat->spat_first;
- cmd->c_flen = arg[2].arg_ptr.arg_spat->spat_flen;
- if (arg[2].arg_ptr.arg_spat->spat_flags & SPAT_SCANALL &&
- (arg->arg_type == O_MATCH || arg->arg_type == O_NMATCH) )
- sure |= CF_EQSURE; /* (SUBST must be forced even */
- /* if we know it will work.) */
- arg[2].arg_ptr.arg_spat->spat_first = Nullstr;
- arg[2].arg_ptr.arg_spat->spat_flen = 0; /* only one chk */
- sure |= CF_NESURE; /* normally only sure if it fails */
- if (arg->arg_type == O_NMATCH || arg->arg_type == O_NSUBST)
- cmd->c_flags |= CF_FIRSTNEG;
- if (context & 1) { /* only sure if thing is false */
- if (cmd->c_flags & CF_FIRSTNEG)
- sure &= ~CF_NESURE;
- else
- sure &= ~CF_EQSURE;
- }
- else if (context & 2) { /* only sure if thing is true */
- if (cmd->c_flags & CF_FIRSTNEG)
- sure &= ~CF_EQSURE;
- else
- sure &= ~CF_NESURE;
- }
- if (sure & (CF_EQSURE|CF_NESURE)) { /* if we know anything*/
- if (arg[2].arg_ptr.arg_spat->spat_flags & SPAT_SCANFIRST)
- opt = CFT_SCAN;
- else
- opt = CFT_ANCHOR;
- if (sure == (CF_EQSURE|CF_NESURE) /* really sure? */
- && arg->arg_type == O_MATCH
- && context & 4
- && fliporflop == 1) {
- arg[2].arg_type = A_SINGLE; /* don't do twice */
- arg[2].arg_ptr.arg_str = &str_yes;
- }
- cmd->c_flags |= sure;
- }
- }
- }
- else if (arg->arg_type == O_SEQ || arg->arg_type == O_SNE ||
- arg->arg_type == O_SLT || arg->arg_type == O_SGT) {
- if (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) {
- if (arg[2].arg_type == A_SINGLE) {
- cmd->c_stab = arg[1].arg_ptr.arg_stab;
- cmd->c_first = arg[2].arg_ptr.arg_str;
- cmd->c_flen = 30000;
- switch (arg->arg_type) {
- case O_SLT: case O_SGT:
- sure |= CF_EQSURE;
- cmd->c_flags |= CF_FIRSTNEG;
- break;
- case O_SNE:
- cmd->c_flags |= CF_FIRSTNEG;
- /* FALL THROUGH */
- case O_SEQ:
- sure |= CF_NESURE|CF_EQSURE;
- break;
- }
- if (context & 1) { /* only sure if thing is false */
- if (cmd->c_flags & CF_FIRSTNEG)
- sure &= ~CF_NESURE;
- else
- sure &= ~CF_EQSURE;
- }
- else if (context & 2) { /* only sure if thing is true */
- if (cmd->c_flags & CF_FIRSTNEG)
- sure &= ~CF_EQSURE;
- else
- sure &= ~CF_NESURE;
- }
- if (sure & (CF_EQSURE|CF_NESURE)) {
- opt = CFT_STROP;
- cmd->c_flags |= sure;
- }
- }
- }
- }
- else if (arg->arg_type == O_ASSIGN &&
- (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) &&
- arg[1].arg_ptr.arg_stab == defstab &&
- arg[2].arg_type == A_EXPR ) {
- arg2 = arg[2].arg_ptr.arg_arg;
- if (arg2->arg_type == O_ITEM && arg2[1].arg_type == A_READ) {
- opt = CFT_GETS;
- cmd->c_stab = arg2[1].arg_ptr.arg_stab;
- if (!(arg2[1].arg_ptr.arg_stab->stab_io->flags & IOF_ARGV)) {
- free_arg(arg2);
- free_arg(arg);
- cmd->c_expr = Nullarg;
- }
- }
- }
- else if (arg->arg_type == O_CHOP &&
- (arg[1].arg_type == A_STAB || arg[1].arg_type == A_LVAL) ) {
- opt = CFT_CHOP;
- cmd->c_stab = arg[1].arg_ptr.arg_stab;
- free_arg(arg);
- cmd->c_expr = Nullarg;
- }
- if (context & 4)
- opt |= CF_FLIP;
- cmd->c_flags |= opt;
-
- if (cmd->c_flags & CF_FLIP) {
- if (fliporflop == 1) {
- arg = cmd->c_expr; /* get back to O_FLIP arg */
- arg[3].arg_ptr.arg_cmd = (CMD*)safemalloc(sizeof(CMD));
- bcopy((char *)cmd, (char *)arg[3].arg_ptr.arg_cmd, sizeof(CMD));
- arg[4].arg_ptr.arg_cmd = (CMD*)safemalloc(sizeof(CMD));
- bcopy((char *)cmd, (char *)arg[4].arg_ptr.arg_cmd, sizeof(CMD));
- opt_arg(arg[4].arg_ptr.arg_cmd,2);
- arg->arg_len = 2; /* this is a lie */
- }
- else {
- if ((opt & CF_OPTIMIZE) == CFT_EVAL)
- cmd->c_flags = (cmd->c_flags & ~CF_OPTIMIZE) | CFT_UNFLIP;
- }
- }
-}
+ yystate = ps->state;
-ARG *
-mod_match(type,left,pat)
-register ARG *left;
-register ARG *pat;
-{
+ YYDPRINTF ((Perl_debug_log, "Entering state %d\n", yystate));
- register SPAT *spat;
- register ARG *newarg;
-
- if ((pat->arg_type == O_MATCH ||
- pat->arg_type == O_SUBST ||
- pat->arg_type == O_TRANS ||
- pat->arg_type == O_SPLIT
- ) &&
- pat[1].arg_ptr.arg_stab == defstab ) {
- switch (pat->arg_type) {
- case O_MATCH:
- newarg = make_op(type == O_MATCH ? O_MATCH : O_NMATCH,
- pat->arg_len,
- left,Nullarg,Nullarg,0);
- break;
- case O_SUBST:
- newarg = l(make_op(type == O_MATCH ? O_SUBST : O_NSUBST,
- pat->arg_len,
- left,Nullarg,Nullarg,0));
- break;
- case O_TRANS:
- newarg = l(make_op(type == O_MATCH ? O_TRANS : O_NTRANS,
- pat->arg_len,
- left,Nullarg,Nullarg,0));
- break;
- case O_SPLIT:
- newarg = make_op(type == O_MATCH ? O_SPLIT : O_SPLIT,
- pat->arg_len,
- left,Nullarg,Nullarg,0);
- break;
- }
- if (pat->arg_len >= 2) {
- newarg[2].arg_type = pat[2].arg_type;
- newarg[2].arg_ptr = pat[2].arg_ptr;
- newarg[2].arg_flags = pat[2].arg_flags;
- if (pat->arg_len >= 3) {
- newarg[3].arg_type = pat[3].arg_type;
- newarg[3].arg_ptr = pat[3].arg_ptr;
- newarg[3].arg_flags = pat[3].arg_flags;
- }
- }
- safefree((char*)pat);
- }
- else {
- spat = (SPAT *) safemalloc(sizeof (SPAT));
- bzero((char *)spat, sizeof(SPAT));
- spat->spat_next = spat_root; /* link into spat list */
- spat_root = spat;
- init_compex(&spat->spat_compex);
-
- spat->spat_runtime = pat;
- newarg = make_op(type,2,left,Nullarg,Nullarg,0);
- newarg[2].arg_type = A_SPAT;
- newarg[2].arg_ptr.arg_spat = spat;
- newarg[2].arg_flags = AF_SPECIAL;
- }
+ parser->yylen = 0;
- return newarg;
-}
+ {
+ size_t size = ps - parser->stack + 1;
-CMD *
-add_label(lbl,cmd)
-char *lbl;
-register CMD *cmd;
-{
- if (cmd)
- cmd->c_label = lbl;
- return cmd;
-}
+ /* grow the stack? We always leave 1 spare slot,
+ * in case of a '' -> 'foo' reduction */
-CMD *
-addcond(cmd, arg)
-register CMD *cmd;
-register ARG *arg;
-{
- cmd->c_expr = arg;
- opt_arg(cmd,1);
- cmd->c_flags |= CF_COND;
- return cmd;
-}
+ if (size >= (size_t)parser->stack_size - 1) {
+ /* this will croak on insufficient memory */
+ parser->stack_size *= 2;
+ Renew(parser->stack, parser->stack_size, yy_stack_frame);
+ ps = parser->ps = parser->stack + size -1;
-CMD *
-addloop(cmd, arg)
-register CMD *cmd;
-register ARG *arg;
-{
- cmd->c_expr = arg;
- opt_arg(cmd,1);
- cmd->c_flags |= CF_COND|CF_LOOP;
- if (cmd->c_type == C_BLOCK)
- cmd->c_flags &= ~CF_COND;
- else {
- arg = cmd->ucmd.acmd.ac_expr;
- if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_CMD)
- cmd->c_flags &= ~CF_COND; /* "do {} while" happens at least once */
- if (arg && arg->arg_type == O_SUBR)
- cmd->c_flags &= ~CF_COND; /* likewise for "do subr() while" */
+ YYDPRINTF((Perl_debug_log,
+ "parser stack size increased to %lu frames\n",
+ (unsigned long int)parser->stack_size));
+ }
}
- return cmd;
-}
-CMD *
-invert(cmd)
-register CMD *cmd;
-{
- cmd->c_flags ^= CF_INVERT;
- return cmd;
-}
+/* Do appropriate processing given the current state. */
+/* Read a lookahead token if we need one and don't already have one. */
-yyerror(s)
-char *s;
-{
- char tmpbuf[128];
- char *tname = tmpbuf;
-
- if (yychar > 256) {
- tname = tokename[yychar-256];
- if (strEQ(tname,"word"))
- strcpy(tname,tokenbuf);
- else if (strEQ(tname,"register"))
- sprintf(tname,"$%s",tokenbuf);
- else if (strEQ(tname,"array_length"))
- sprintf(tname,"$#%s",tokenbuf);
- }
- else if (!yychar)
- strcpy(tname,"EOF");
- else if (yychar < 32)
- sprintf(tname,"^%c",yychar+64);
- else if (yychar == 127)
- strcpy(tname,"^?");
- else
- sprintf(tname,"%c",yychar);
- printf("%s in file %s at line %d, next token \"%s\"\n",
- s,filename,line,tname);
-}
+ /* First try to decide what to do without reference to lookahead token. */
-char *
-scanstr(s)
-register char *s;
-{
- register char term;
- register char *d;
- register ARG *arg;
- register bool makesingle = FALSE;
- char *leave = "\\$nrtfb0123456789"; /* which backslash sequences to keep */
-
- arg = op_new(1);
- yylval.arg = arg;
- arg->arg_type = O_ITEM;
-
- switch (*s) {
- default: /* a substitution replacement */
- arg[1].arg_type = A_DOUBLE;
- makesingle = TRUE; /* maybe disable runtime scanning */
- term = *s;
- if (term == '\'')
- leave = Nullch;
- goto snarf_it;
- case '0':
- {
- long i;
- int shift;
+ yyn = yypact[yystate];
+ if (yyn == YYPACT_NINF)
+ goto yydefault;
- arg[1].arg_type = A_SINGLE;
- if (s[1] == 'x') {
- shift = 4;
- s += 2;
- }
- else if (s[1] == '.')
- goto decimal;
- else
- shift = 3;
- i = 0;
- for (;;) {
- switch (*s) {
- default:
- goto out;
- case '8': case '9':
- if (shift != 4)
- fatal("Illegal octal digit at line %d",line);
- /* FALL THROUGH */
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7':
- i <<= shift;
- i += *s++ & 15;
- break;
- case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
- if (shift != 4)
- goto out;
- i <<= 4;
- i += (*s++ & 7) + 9;
- break;
- }
- }
- out:
- sprintf(tokenbuf,"%d",i);
- arg[1].arg_ptr.arg_str = str_make(tokenbuf);
- }
- break;
- case '1': case '2': case '3': case '4': case '5':
- case '6': case '7': case '8': case '9': case '.':
- decimal:
- arg[1].arg_type = A_SINGLE;
- d = tokenbuf;
- while (isdigit(*s) || *s == '_')
- *d++ = *s++;
- if (*s == '.' && index("0123456789eE",s[1]))
- *d++ = *s++;
- while (isdigit(*s) || *s == '_')
- *d++ = *s++;
- if (index("eE",*s) && index("+-0123456789",s[1]))
- *d++ = *s++;
- if (*s == '+' || *s == '-')
- *d++ = *s++;
- while (isdigit(*s))
- *d++ = *s++;
- *d = '\0';
- arg[1].arg_ptr.arg_str = str_make(tokenbuf);
- break;
- case '\'':
- arg[1].arg_type = A_SINGLE;
- term = *s;
- leave = Nullch;
- goto snarf_it;
-
- case '<':
- arg[1].arg_type = A_READ;
- s = cpytill(tokenbuf,s+1,'>');
- if (!*tokenbuf)
- strcpy(tokenbuf,"ARGV");
- if (*s)
- s++;
- if (rsfp == stdin && strEQ(tokenbuf,"stdin"))
- fatal("Can't get both program and data from <stdin>\n");
- arg[1].arg_ptr.arg_stab = stabent(tokenbuf,TRUE);
- arg[1].arg_ptr.arg_stab->stab_io = stio_new();
- if (strEQ(tokenbuf,"ARGV")) {
- aadd(arg[1].arg_ptr.arg_stab);
- arg[1].arg_ptr.arg_stab->stab_io->flags |= IOF_ARGV|IOF_START;
- }
- break;
- case '"':
- arg[1].arg_type = A_DOUBLE;
- makesingle = TRUE; /* maybe disable runtime scanning */
- term = *s;
- goto snarf_it;
- case '`':
- arg[1].arg_type = A_BACKTICK;
- term = *s;
- snarf_it:
- {
- STR *tmpstr;
- int sqstart = line;
- char *tmps;
-
- tmpstr = str_new(strlen(s));
- s = str_append_till(tmpstr,s+1,term,leave);
- while (!*s) { /* multiple line string? */
- s = str_gets(linestr, rsfp);
- if (!*s)
- fatal("EOF in string at line %d\n",sqstart);
- line++;
- s = str_append_till(tmpstr,s,term,leave);
- }
- s++;
- if (term == '\'') {
- arg[1].arg_ptr.arg_str = tmpstr;
- break;
- }
- tmps = s;
- s = d = tmpstr->str_ptr; /* assuming shrinkage only */
- while (*s) {
- if (*s == '$' && s[1]) {
- makesingle = FALSE; /* force interpretation */
- if (!isalpha(s[1])) { /* an internal register? */
- int len;
-
- len = scanreg(s,tokenbuf) - s;
- stabent(tokenbuf,TRUE); /* make sure it's created */
- while (len--)
- *d++ = *s++;
- continue;
- }
- }
- else if (*s == '\\' && s[1]) {
- s++;
- switch (*s) {
- default:
- defchar:
- if (!leave || index(leave,*s))
- *d++ = '\\';
- *d++ = *s++;
- continue;
- case '0': case '1': case '2': case '3':
- case '4': case '5': case '6': case '7':
- *d = *s++ - '0';
- if (index("01234567",*s)) {
- *d <<= 3;
- *d += *s++ - '0';
- }
- else if (!index('`"',term)) { /* oops, a subpattern */
- s--;
- goto defchar;
- }
- if (index("01234567",*s)) {
- *d <<= 3;
- *d += *s++ - '0';
- }
- d++;
- continue;
- case 'b':
- *d++ = '\b';
- break;
- case 'n':
- *d++ = '\n';
- break;
- case 'r':
- *d++ = '\r';
- break;
- case 'f':
- *d++ = '\f';
- break;
- case 't':
- *d++ = '\t';
- break;
- }
- s++;
- continue;
- }
- *d++ = *s++;
- }
- *d = '\0';
- if (arg[1].arg_type == A_DOUBLE) {
- if (makesingle)
- arg[1].arg_type = A_SINGLE; /* now we can optimize on it */
- else
- leave = "\\";
- for (d = s = tmpstr->str_ptr; *s; *d++ = *s++) {
- if (*s == '\\' && (!leave || index(leave,s[1])))
- s++;
- }
- *d = '\0';
- }
- tmpstr->str_cur = d - tmpstr->str_ptr; /* XXX cheat */
- arg[1].arg_ptr.arg_str = tmpstr;
- s = tmps;
- break;
- }
- }
- return s;
-}
+ /* Not known => get a lookahead token if don't already have one. */
-ARG *
-make_op(type,newlen,arg1,arg2,arg3,dolist)
-int type;
-int newlen;
-ARG *arg1;
-ARG *arg2;
-ARG *arg3;
-int dolist;
-{
- register ARG *arg;
- register ARG *chld;
- register int doarg;
-
- arg = op_new(newlen);
- arg->arg_type = type;
- doarg = opargs[type];
- if (chld = arg1) {
- if (!(doarg & 1))
- arg[1].arg_flags |= AF_SPECIAL;
- if (doarg & 16)
- arg[1].arg_flags |= AF_NUMERIC;
- if (chld->arg_type == O_ITEM &&
- (hoistable[chld[1].arg_type] || chld[1].arg_type == A_LVAL) ) {
- arg[1].arg_type = chld[1].arg_type;
- arg[1].arg_ptr = chld[1].arg_ptr;
- arg[1].arg_flags |= chld[1].arg_flags;
- free_arg(chld);
- }
- else {
- arg[1].arg_type = A_EXPR;
- arg[1].arg_ptr.arg_arg = chld;
- if (dolist & 1) {
- if (chld->arg_type == O_LIST) {
- if (newlen == 1) { /* we can hoist entire list */
- chld->arg_type = type;
- free_arg(arg);
- arg = chld;
- }
- else {
- arg[1].arg_flags |= AF_SPECIAL;
- }
- }
- else if (chld->arg_type == O_ARRAY && chld->arg_len == 1)
- arg[1].arg_flags |= AF_SPECIAL;
- }
- }
- }
- if (chld = arg2) {
- if (!(doarg & 2))
- arg[2].arg_flags |= AF_SPECIAL;
- if (doarg & 32)
- arg[2].arg_flags |= AF_NUMERIC;
- if (chld->arg_type == O_ITEM &&
- (hoistable[chld[1].arg_type] ||
- (type == O_ASSIGN &&
- (chld[1].arg_type == A_READ ||
- chld[1].arg_type == A_DOUBLE ||
- chld[1].arg_type == A_BACKTICK ) ) ) ) {
- arg[2].arg_type = chld[1].arg_type;
- arg[2].arg_ptr = chld[1].arg_ptr;
- free_arg(chld);
- }
- else {
- arg[2].arg_type = A_EXPR;
- arg[2].arg_ptr.arg_arg = chld;
- if ((dolist & 2) &&
- (chld->arg_type == O_LIST ||
- (chld->arg_type == O_ARRAY && chld->arg_len == 1) ))
- arg[2].arg_flags |= AF_SPECIAL;
+ /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol. */
+ if (parser->yychar == YYEMPTY) {
+ YYDPRINTF ((Perl_debug_log, "Reading a token: "));
+#ifdef PERL_IN_MADLY_C
+ parser->yychar = PL_madskills ? madlex() : yylex();
+#else
+ parser->yychar = yylex();
+#endif
+
+# ifdef EBCDIC
+ if (parser->yychar >= 0 && parser->yychar < 255) {
+ parser->yychar = NATIVE_TO_ASCII(parser->yychar);
}
+# endif
}
- if (chld = arg3) {
- if (!(doarg & 4))
- arg[3].arg_flags |= AF_SPECIAL;
- if (doarg & 64)
- arg[3].arg_flags |= AF_NUMERIC;
- if (chld->arg_type == O_ITEM && hoistable[chld[1].arg_type]) {
- arg[3].arg_type = chld[1].arg_type;
- arg[3].arg_ptr = chld[1].arg_ptr;
- free_arg(chld);
- }
- else {
- arg[3].arg_type = A_EXPR;
- arg[3].arg_ptr.arg_arg = chld;
- if ((dolist & 4) &&
- (chld->arg_type == O_LIST ||
- (chld->arg_type == O_ARRAY && chld->arg_len == 1) ))
- arg[3].arg_flags |= AF_SPECIAL;
- }
+
+ if (parser->yychar <= YYEOF) {
+ parser->yychar = yytoken = YYEOF;
+ YYDPRINTF ((Perl_debug_log, "Now at end of input.\n"));
}
+ else {
+ yytoken = YYTRANSLATE (parser->yychar);
+ YYDSYMPRINTF ("Next token is", yytoken, &parser->yylval);
+ }
+
+ /* If the proper action on seeing token YYTOKEN is to reduce or to
+ detect an error, take that action. */
+ yyn += yytoken;
+ if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken)
+ goto yydefault;
+ yyn = yytable[yyn];
+ if (yyn <= 0) {
+ if (yyn == 0 || yyn == YYTABLE_NINF)
+ goto yyerrlab;
+ yyn = -yyn;
+ goto yyreduce;
+ }
+
+ if (yyn == YYFINAL)
+ YYACCEPT;
+
+ /* Shift the lookahead token. */
+ YYDPRINTF ((Perl_debug_log, "Shifting token %s, ", yytname[yytoken]));
+
+ /* Discard the token being shifted unless it is eof. */
+ if (parser->yychar != YYEOF)
+ parser->yychar = YYEMPTY;
+
+ YYPUSHSTACK;
+ ps->state = yyn;
+ ps->val = parser->yylval;
+ ps->compcv = (CV*)SvREFCNT_inc(PL_compcv);
+ ps->savestack_ix = PL_savestack_ix;
#ifdef DEBUGGING
- if (debug & 16) {
- fprintf(stderr,"%lx <= make_op(%s",arg,opname[arg->arg_type]);
- if (arg1)
- fprintf(stderr,",%s=%lx",
- argname[arg[1].arg_type],arg[1].arg_ptr.arg_arg);
- if (arg2)
- fprintf(stderr,",%s=%lx",
- argname[arg[2].arg_type],arg[2].arg_ptr.arg_arg);
- if (arg3)
- fprintf(stderr,",%s=%lx",
- argname[arg[3].arg_type],arg[3].arg_ptr.arg_arg);
- fprintf(stderr,")\n");
- }
+ ps->name = (const char *)(yytname[yytoken]);
#endif
- evalstatic(arg); /* see if we can consolidate anything */
- return arg;
-}
-/* turn 123 into 123 == $. */
+ /* Count tokens shifted since error; after three, turn off error
+ status. */
+ if (parser->yyerrstatus)
+ parser->yyerrstatus--;
+
+ goto yynewstate;
+
+
+ /*-----------------------------------------------------------.
+ | yydefault -- do the default action for the current state. |
+ `-----------------------------------------------------------*/
+ yydefault:
+ yyn = yydefact[yystate];
+ if (yyn == 0)
+ goto yyerrlab;
+ goto yyreduce;
+
+
+ /*-----------------------------.
+ | yyreduce -- Do a reduction. |
+ `-----------------------------*/
+ yyreduce:
+ /* yyn is the number of a rule to reduce with. */
+ parser->yylen = yyr2[yyn];
+
+ /* If YYLEN is nonzero, implement the default value of the action:
+ "$$ = $1".
+
+ Otherwise, the following line sets YYVAL to garbage.
+ This behavior is undocumented and Bison
+ users should not rely upon it. Assigning to YYVAL
+ unconditionally makes the parser a bit smaller, and it avoids a
+ GCC warning that YYVAL may be used uninitialized. */
+ yyval = ps[1-parser->yylen].val;
+
+ YY_STACK_PRINT(parser);
+ YY_REDUCE_PRINT (yyn);
+
+ switch (yyn) {
+
+
+#define dep() deprecate("\"do\" to call subroutines")
+
+#ifdef PERL_IN_MADLY_C
+# define IVAL(i) (i)->tk_lval.ival
+# define PVAL(p) (p)->tk_lval.pval
+# define TOKEN_GETMAD(a,b,c) token_getmad((a),(b),(c))
+# define TOKEN_FREE(a) token_free(a)
+# define OP_GETMAD(a,b,c) op_getmad((a),(b),(c))
+# define IF_MAD(a,b) (a)
+# define DO_MAD(a) a
+# define MAD
+#else
+# define IVAL(i) (i)
+# define PVAL(p) (p)
+# define TOKEN_GETMAD(a,b,c)
+# define TOKEN_FREE(a)
+# define OP_GETMAD(a,b,c)
+# define IF_MAD(a,b) (b)
+# define DO_MAD(a)
+# undef MAD
+#endif
-ARG *
-flipflip(arg)
-register ARG *arg;
-{
- if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_SINGLE) {
- arg = (ARG*)saferealloc((char*)arg,3*sizeof(ARG));
- arg->arg_type = O_EQ;
- arg->arg_len = 2;
- arg[2].arg_type = A_STAB;
- arg[2].arg_flags = 0;
- arg[2].arg_ptr.arg_stab = stabent(".",TRUE);
- }
- return arg;
-}
+/* contains all the rule actions; auto-generated from perly.y */
+#include "perly.act"
-void
-evalstatic(arg)
-register ARG *arg;
-{
- register STR *str;
- register STR *s1;
- register STR *s2;
- double value; /* must not be register */
- register char *tmps;
- int i;
- double exp(), log(), sqrt(), modf();
- char *crypt();
-
- if (!arg || !arg->arg_len)
- return;
+ }
- if (arg[1].arg_type == A_SINGLE &&
- (arg->arg_len == 1 || arg[2].arg_type == A_SINGLE) ) {
- str = str_new(0);
- s1 = arg[1].arg_ptr.arg_str;
- if (arg->arg_len > 1)
- s2 = arg[2].arg_ptr.arg_str;
- else
- s2 = Nullstr;
- switch (arg->arg_type) {
- default:
- str_free(str);
- str = Nullstr; /* can't be evaluated yet */
- break;
- case O_CONCAT:
- str_sset(str,s1);
- str_scat(str,s2);
- break;
- case O_REPEAT:
- i = (int)str_gnum(s2);
- while (i--)
- str_scat(str,s1);
- break;
- case O_MULTIPLY:
- value = str_gnum(s1);
- str_numset(str,value * str_gnum(s2));
- break;
- case O_DIVIDE:
- value = str_gnum(s1);
- str_numset(str,value / str_gnum(s2));
- break;
- case O_MODULO:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) % ((long)str_gnum(s2))));
- break;
- case O_ADD:
- value = str_gnum(s1);
- str_numset(str,value + str_gnum(s2));
- break;
- case O_SUBTRACT:
- value = str_gnum(s1);
- str_numset(str,value - str_gnum(s2));
- break;
- case O_LEFT_SHIFT:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) << ((long)str_gnum(s2))));
- break;
- case O_RIGHT_SHIFT:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) >> ((long)str_gnum(s2))));
- break;
- case O_LT:
- value = str_gnum(s1);
- str_numset(str,(double)(value < str_gnum(s2)));
- break;
- case O_GT:
- value = str_gnum(s1);
- str_numset(str,(double)(value > str_gnum(s2)));
- break;
- case O_LE:
- value = str_gnum(s1);
- str_numset(str,(double)(value <= str_gnum(s2)));
- break;
- case O_GE:
- value = str_gnum(s1);
- str_numset(str,(double)(value >= str_gnum(s2)));
- break;
- case O_EQ:
- value = str_gnum(s1);
- str_numset(str,(double)(value == str_gnum(s2)));
- break;
- case O_NE:
- value = str_gnum(s1);
- str_numset(str,(double)(value != str_gnum(s2)));
- break;
- case O_BIT_AND:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) & ((long)str_gnum(s2))));
- break;
- case O_XOR:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) ^ ((long)str_gnum(s2))));
- break;
- case O_BIT_OR:
- value = str_gnum(s1);
- str_numset(str,(double)(((long)value) | ((long)str_gnum(s2))));
- break;
- case O_AND:
- if (str_true(s1))
- str = str_make(str_get(s2));
- else
- str = str_make(str_get(s1));
- break;
- case O_OR:
- if (str_true(s1))
- str = str_make(str_get(s1));
- else
- str = str_make(str_get(s2));
- break;
- case O_COND_EXPR:
- if (arg[3].arg_type != A_SINGLE) {
- str_free(str);
- str = Nullstr;
- }
- else {
- str = str_make(str_get(str_true(s1) ? s2 : arg[3].arg_ptr.arg_str));
- str_free(arg[3].arg_ptr.arg_str);
- }
- break;
- case O_NEGATE:
- str_numset(str,(double)(-str_gnum(s1)));
- break;
- case O_NOT:
- str_numset(str,(double)(!str_true(s1)));
- break;
- case O_COMPLEMENT:
- str_numset(str,(double)(~(long)str_gnum(s1)));
- break;
- case O_LENGTH:
- str_numset(str, (double)str_len(s1));
- break;
- case O_SUBSTR:
- if (arg[3].arg_type != A_SINGLE || stabent("[",FALSE)) {
- str_free(str); /* making the fallacious assumption */
- str = Nullstr; /* that any $[ occurs before substr()*/
- }
- else {
- char *beg;
- int len = (int)str_gnum(s2);
- int tmp;
-
- for (beg = str_get(s1); *beg && len > 0; beg++,len--) ;
- len = (int)str_gnum(arg[3].arg_ptr.arg_str);
- str_free(arg[3].arg_ptr.arg_str);
- if (len > (tmp = strlen(beg)))
- len = tmp;
- str_nset(str,beg,len);
- }
- break;
- case O_SLT:
- tmps = str_get(s1);
- str_numset(str,(double)(strLT(tmps,str_get(s2))));
- break;
- case O_SGT:
- tmps = str_get(s1);
- str_numset(str,(double)(strGT(tmps,str_get(s2))));
- break;
- case O_SLE:
- tmps = str_get(s1);
- str_numset(str,(double)(strLE(tmps,str_get(s2))));
- break;
- case O_SGE:
- tmps = str_get(s1);
- str_numset(str,(double)(strGE(tmps,str_get(s2))));
- break;
- case O_SEQ:
- tmps = str_get(s1);
- str_numset(str,(double)(strEQ(tmps,str_get(s2))));
- break;
- case O_SNE:
- tmps = str_get(s1);
- str_numset(str,(double)(strNE(tmps,str_get(s2))));
- break;
- case O_CRYPT:
- tmps = str_get(s1);
- str_set(str,crypt(tmps,str_get(s2)));
- break;
- case O_EXP:
- str_numset(str,exp(str_gnum(s1)));
- break;
- case O_LOG:
- str_numset(str,log(str_gnum(s1)));
- break;
- case O_SQRT:
- str_numset(str,sqrt(str_gnum(s1)));
- break;
- case O_INT:
- modf(str_gnum(s1),&value);
- str_numset(str,value);
- break;
- case O_ORD:
- str_numset(str,(double)(*str_get(s1)));
- break;
- }
- if (str) {
- arg->arg_type = O_ITEM; /* note arg1 type is already SINGLE */
- str_free(s1);
- str_free(s2);
- arg[1].arg_ptr.arg_str = str;
+ {
+ int i;
+ for (i=0; i< parser->yylen; i++) {
+ SvREFCNT_dec(ps[-i].compcv);
}
}
-}
-ARG *
-l(arg)
-register ARG *arg;
-{
- register int i;
- register ARG *arg1;
+ parser->ps = ps -= (parser->yylen-1);
- arg->arg_flags |= AF_COMMON; /* XXX should cross-match */
+ /* Now shift the result of the reduction. Determine what state
+ that goes to, based on the state we popped back to and the rule
+ number reduced by. */
- /* see if it's an array reference */
+ ps->val = yyval;
+ ps->compcv = (CV*)SvREFCNT_inc(PL_compcv);
+ ps->savestack_ix = PL_savestack_ix;
+#ifdef DEBUGGING
+ ps->name = (const char *)(yytname [yyr1[yyn]]);
+#endif
- if (arg[1].arg_type == A_EXPR) {
- arg1 = arg[1].arg_ptr.arg_arg;
+ yyn = yyr1[yyn];
- if (arg1->arg_type == O_LIST && arg->arg_type != O_ITEM) {
- /* assign to list */
- arg[1].arg_flags |= AF_SPECIAL;
- arg[2].arg_flags |= AF_SPECIAL;
- for (i = arg1->arg_len; i >= 1; i--) {
- switch (arg1[i].arg_type) {
- case A_STAB: case A_LVAL:
- arg1[i].arg_type = A_LVAL;
- break;
- case A_EXPR: case A_LEXPR:
- arg1[i].arg_type = A_LEXPR;
- if (arg1[i].arg_ptr.arg_arg->arg_type == O_ARRAY)
- arg1[i].arg_ptr.arg_arg->arg_type = O_LARRAY;
- else if (arg1[i].arg_ptr.arg_arg->arg_type == O_HASH)
- arg1[i].arg_ptr.arg_arg->arg_type = O_LHASH;
- if (arg1[i].arg_ptr.arg_arg->arg_type == O_LARRAY)
- break;
- if (arg1[i].arg_ptr.arg_arg->arg_type == O_LHASH)
- break;
- /* FALL THROUGH */
- default:
- sprintf(tokenbuf,
- "Illegal item (%s) as lvalue",argname[arg1[i].arg_type]);
- yyerror(tokenbuf);
+ yystate = yypgoto[yyn - YYNTOKENS] + ps[-1].state;
+ if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == ps[-1].state)
+ yystate = yytable[yystate];
+ else
+ yystate = yydefgoto[yyn - YYNTOKENS];
+ ps->state = yystate;
+
+ goto yynewstate;
+
+
+ /*------------------------------------.
+ | yyerrlab -- here on detecting error |
+ `------------------------------------*/
+ yyerrlab:
+ /* If not already recovering from an error, report this error. */
+ if (!parser->yyerrstatus) {
+ yyerror ("syntax error");
+ }
+
+
+ if (parser->yyerrstatus == 3) {
+ /* If just tried and failed to reuse lookahead token after an
+ error, discard it. */
+
+ /* Return failure if at end of input. */
+ if (parser->yychar == YYEOF) {
+ /* Pop the error token. */
+ SvREFCNT_dec(ps->compcv);
+ YYPOPSTACK;
+ /* Pop the rest of the stack. */
+ while (ps > parser->stack) {
+ YYDSYMPRINTF ("Error: popping", yystos[ps->state], &ps->val);
+ LEAVE_SCOPE(ps->savestack_ix);
+ if (yy_type_tab[yystos[ps->state]] == toketype_opval
+ && ps->val.opval)
+ {
+ YYDPRINTF ((Perl_debug_log, "(freeing op)\n"));
+ if (ps->compcv != PL_compcv) {
+ PL_compcv = ps->compcv;
+ PAD_SET_CUR_NOSAVE(CvPADLIST(PL_compcv), 1);
+ }
+ op_free(ps->val.opval);
}
+ SvREFCNT_dec(ps->compcv);
+ YYPOPSTACK;
}
+ YYABORT;
}
- else if (arg1->arg_type == O_ARRAY) {
- if (arg1->arg_len == 1 && arg->arg_type != O_ITEM) {
- /* assign to array */
- arg[1].arg_flags |= AF_SPECIAL;
- arg[2].arg_flags |= AF_SPECIAL;
- }
- else
- arg1->arg_type = O_LARRAY; /* assign to array elem */
- }
- else if (arg1->arg_type == O_HASH)
- arg1->arg_type = O_LHASH;
- else {
- sprintf(tokenbuf,
- "Illegal expression (%s) as lvalue",opname[arg1->arg_type]);
- yyerror(tokenbuf);
- }
- arg[1].arg_type = A_LEXPR;
-#ifdef DEBUGGING
- if (debug & 16)
- fprintf(stderr,"lval LEXPR\n");
-#endif
- return arg;
- }
- /* not an array reference, should be a register name */
+ YYDSYMPRINTF ("Error: discarding", yytoken, &parser->yylval);
+ parser->yychar = YYEMPTY;
- if (arg[1].arg_type != A_STAB && arg[1].arg_type != A_LVAL) {
- sprintf(tokenbuf,
- "Illegal item (%s) as lvalue",argname[arg[1].arg_type]);
- yyerror(tokenbuf);
}
- arg[1].arg_type = A_LVAL;
-#ifdef DEBUGGING
- if (debug & 16)
- fprintf(stderr,"lval LVAL\n");
-#endif
- return arg;
-}
-ARG *
-addflags(i,flags,arg)
-register ARG *arg;
-{
- arg[i].arg_flags |= flags;
- return arg;
-}
+ /* Else will try to reuse lookahead token after shifting the error
+ token. */
+ goto yyerrlab1;
-ARG *
-hide_ary(arg)
-ARG *arg;
-{
- if (arg->arg_type == O_ARRAY)
- return make_op(O_ITEM,1,arg,Nullarg,Nullarg,0);
- return arg;
-}
-ARG *
-make_list(arg)
-register ARG *arg;
-{
- register int i;
- register ARG *node;
- register ARG *nxtnode;
- register int j;
- STR *tmpstr;
-
- if (!arg) {
- arg = op_new(0);
- arg->arg_type = O_LIST;
- }
- if (arg->arg_type != O_COMMA) {
- arg->arg_flags |= AF_LISTISH; /* see listish() below */
- return arg;
- }
- for (i = 2, node = arg; ; i++) {
- if (node->arg_len < 2)
- break;
- if (node[2].arg_type != A_EXPR)
- break;
- node = node[2].arg_ptr.arg_arg;
- if (node->arg_type != O_COMMA)
- break;
- }
- if (i > 2) {
- node = arg;
- arg = op_new(i);
- tmpstr = arg->arg_ptr.arg_str;
- *arg = *node; /* copy everything except the STR */
- arg->arg_ptr.arg_str = tmpstr;
- for (j = 1; ; ) {
- arg[j++] = node[1];
- if (j >= i) {
- arg[j] = node[2];
- free_arg(node);
- break;
+ /*----------------------------------------------------.
+ | yyerrlab1 -- error raised explicitly by an action. |
+ `----------------------------------------------------*/
+ yyerrlab1:
+ parser->yyerrstatus = 3; /* Each real token shifted decrements this. */
+
+ for (;;) {
+ yyn = yypact[yystate];
+ if (yyn != YYPACT_NINF) {
+ yyn += YYTERROR;
+ if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) {
+ yyn = yytable[yyn];
+ if (0 < yyn)
+ break;
}
- nxtnode = node[2].arg_ptr.arg_arg;
- free_arg(node);
- node = nxtnode;
}
- }
- arg->arg_type = O_LIST;
- arg->arg_len = i;
- return arg;
-}
-
-/* turn a single item into a list */
-
-ARG *
-listish(arg)
-ARG *arg;
-{
- if (arg->arg_flags & AF_LISTISH)
- arg = make_op(O_LIST,1,arg,Nullarg,Nullarg,0);
- return arg;
-}
-
-ARG *
-stab_to_arg(atype,stab)
-int atype;
-register STAB *stab;
-{
- register ARG *arg;
-
- arg = op_new(1);
- arg->arg_type = O_ITEM;
- arg[1].arg_type = atype;
- arg[1].arg_ptr.arg_stab = stab;
- return arg;
-}
-
-ARG *
-cval_to_arg(cval)
-register char *cval;
-{
- register ARG *arg;
-
- arg = op_new(1);
- arg->arg_type = O_ITEM;
- arg[1].arg_type = A_SINGLE;
- arg[1].arg_ptr.arg_str = str_make(cval);
- safefree(cval);
- return arg;
-}
-ARG *
-op_new(numargs)
-int numargs;
-{
- register ARG *arg;
+ /* Pop the current state because it cannot handle the error token. */
+ if (ps == parser->stack)
+ YYABORT;
- arg = (ARG*)safemalloc((numargs + 1) * sizeof (ARG));
- bzero((char *)arg, (numargs + 1) * sizeof (ARG));
- arg->arg_ptr.arg_str = str_new(0);
- arg->arg_len = numargs;
- return arg;
-}
+ YYDSYMPRINTF ("Error: popping", yystos[ps->state], &ps->val);
+ LEAVE_SCOPE(ps->savestack_ix);
+ if (yy_type_tab[yystos[ps->state]] == toketype_opval && ps->val.opval) {
+ YYDPRINTF ((Perl_debug_log, "(freeing op)\n"));
+ if (ps->compcv != PL_compcv) {
+ PL_compcv = ps->compcv;
+ PAD_SET_CUR_NOSAVE(CvPADLIST(PL_compcv), 1);
+ }
+ op_free(ps->val.opval);
+ }
+ SvREFCNT_dec(ps->compcv);
+ YYPOPSTACK;
+ yystate = ps->state;
-void
-free_arg(arg)
-ARG *arg;
-{
- str_free(arg->arg_ptr.arg_str);
- safefree((char*)arg);
-}
+ YY_STACK_PRINT(parser);
+ }
-ARG *
-make_match(type,expr,spat)
-int type;
-ARG *expr;
-SPAT *spat;
-{
- register ARG *arg;
+ if (yyn == YYFINAL)
+ YYACCEPT;
- arg = make_op(type,2,expr,Nullarg,Nullarg,0);
+ YYDPRINTF ((Perl_debug_log, "Shifting error token, "));
- arg[2].arg_type = A_SPAT;
- arg[2].arg_ptr.arg_spat = spat;
+ YYPUSHSTACK;
+ ps->state = yyn;
+ ps->val = parser->yylval;
+ ps->compcv = (CV*)SvREFCNT_inc(PL_compcv);
+ ps->savestack_ix = PL_savestack_ix;
#ifdef DEBUGGING
- if (debug & 16)
- fprintf(stderr,"make_match SPAT=%lx\n",spat);
+ ps->name ="<err>";
#endif
- if (type == O_SUBST || type == O_NSUBST) {
- if (arg[1].arg_type != A_STAB)
- yyerror("Illegal lvalue");
- arg[1].arg_type = A_LVAL;
- }
- return arg;
-}
+ goto yynewstate;
-ARG *
-cmd_to_arg(cmd)
-CMD *cmd;
-{
- register ARG *arg;
- arg = op_new(1);
- arg->arg_type = O_ITEM;
- arg[1].arg_type = A_CMD;
- arg[1].arg_ptr.arg_cmd = cmd;
- return arg;
-}
-
-CMD *
-wopt(cmd)
-register CMD *cmd;
-{
- register CMD *tail;
- register ARG *arg = cmd->c_expr;
- char *tmps; /* used by True macro */
-
- /* hoist "while (<channel>)" up into command block */
-
- if (arg && arg->arg_type == O_ITEM && arg[1].arg_type == A_READ) {
- cmd->c_flags &= ~CF_OPTIMIZE; /* clear optimization type */
- cmd->c_flags |= CFT_GETS; /* and set it to do the input */
- cmd->c_stab = arg[1].arg_ptr.arg_stab;
- if (arg[1].arg_ptr.arg_stab->stab_io->flags & IOF_ARGV) {
- cmd->c_expr = l(make_op(O_ASSIGN, 2, /* fake up "$_ =" */
- stab_to_arg(A_LVAL,defstab), arg, Nullarg,1 ));
- }
- else {
- free_arg(arg);
- cmd->c_expr = Nullarg;
- }
+ /*-------------------------------------.
+ | yyacceptlab -- YYACCEPT comes here. |
+ `-------------------------------------*/
+ yyacceptlab:
+ yyresult = 0;
+ for (ps=parser->ps; ps > parser->stack; ps--) {
+ SvREFCNT_dec(ps->compcv);
}
+ parser->ps = parser->stack; /* disable cleanup */
+ goto yyreturn;
- /* First find the end of the true list */
-
- if (cmd->ucmd.ccmd.cc_true == Nullcmd)
- return cmd;
- for (tail = cmd->ucmd.ccmd.cc_true; tail->c_next; tail = tail->c_next) ;
+ /*-----------------------------------.
+ | yyabortlab -- YYABORT comes here. |
+ `-----------------------------------*/
+ yyabortlab:
+ yyresult = 1;
+ goto yyreturn;
- /* if there's a continue block, link it to true block and find end */
-
- if (cmd->ucmd.ccmd.cc_alt != Nullcmd) {
- tail->c_next = cmd->ucmd.ccmd.cc_alt;
- for ( ; tail->c_next; tail = tail->c_next) ;
- }
-
- /* Here's the real trick: link the end of the list back to the beginning,
- * inserting a "last" block to break out of the loop. This saves one or
- * two procedure calls every time through the loop, because of how cmd_exec
- * does tail recursion.
- */
-
- tail->c_next = (CMD *) safemalloc(sizeof (CMD));
- tail = tail->c_next;
- if (!cmd->ucmd.ccmd.cc_alt)
- cmd->ucmd.ccmd.cc_alt = tail; /* every loop has a continue now */
-
- bcopy((char *)cmd, (char *)tail, sizeof(CMD));
- tail->c_type = C_EXPR;
- tail->c_flags ^= CF_INVERT; /* turn into "last unless" */
- tail->c_next = tail->ucmd.ccmd.cc_true; /* loop directly back to top */
- tail->ucmd.acmd.ac_expr = make_op(O_LAST,0,Nullarg,Nullarg,Nullarg,0);
- tail->ucmd.acmd.ac_stab = Nullstab;
- return cmd;
+ yyreturn:
+ LEAVE; /* force parser stack cleanup before we return */
+ return yyresult;
}
-FCMD *
-load_format()
-{
- FCMD froot;
- FCMD *flinebeg;
- register FCMD *fprev = &froot;
- register FCMD *fcmd;
- register char *s;
- register char *t;
- register char tmpchar;
- bool noblank;
-
- while ((s = str_gets(linestr,rsfp)) != Nullch) {
- line++;
- if (strEQ(s,".\n")) {
- bufptr = s;
- return froot.f_next;
- }
- if (*s == '#')
- continue;
- flinebeg = Nullfcmd;
- noblank = FALSE;
- while (*s) {
- fcmd = (FCMD *)safemalloc(sizeof (FCMD));
- bzero((char*)fcmd, sizeof (FCMD));
- fprev->f_next = fcmd;
- fprev = fcmd;
- for (t=s; *t && *t != '@' && *t != '^'; t++) {
- if (*t == '~') {
- noblank = TRUE;
- *t = ' ';
- }
- }
- tmpchar = *t;
- *t = '\0';
- fcmd->f_pre = savestr(s);
- fcmd->f_presize = strlen(s);
- *t = tmpchar;
- s = t;
- if (!*s) {
- if (noblank)
- fcmd->f_flags |= FC_NOBLANK;
- break;
- }
- if (!flinebeg)
- flinebeg = fcmd; /* start values here */
- if (*s++ == '^')
- fcmd->f_flags |= FC_CHOP; /* for doing text filling */
- switch (*s) {
- case '*':
- fcmd->f_type = F_LINES;
- *s = '\0';
- break;
- case '<':
- fcmd->f_type = F_LEFT;
- while (*s == '<')
- s++;
- break;
- case '>':
- fcmd->f_type = F_RIGHT;
- while (*s == '>')
- s++;
- break;
- case '|':
- fcmd->f_type = F_CENTER;
- while (*s == '|')
- s++;
- break;
- default:
- fcmd->f_type = F_LEFT;
- break;
- }
- if (fcmd->f_flags & FC_CHOP && *s == '.') {
- fcmd->f_flags |= FC_MORE;
- while (*s == '.')
- s++;
- }
- fcmd->f_size = s-t;
- }
- if (flinebeg) {
- again:
- if ((bufptr = str_gets(linestr ,rsfp)) == Nullch)
- goto badform;
- line++;
- if (strEQ(bufptr,".\n")) {
- yyerror("Missing values line");
- return froot.f_next;
- }
- if (*bufptr == '#')
- goto again;
- lex_newlines = TRUE;
- while (flinebeg || *bufptr) {
- switch(yylex()) {
- default:
- yyerror("Bad value in format");
- *bufptr = '\0';
- break;
- case '\n':
- if (flinebeg)
- yyerror("Missing value in format");
- *bufptr = '\0';
- break;
- case REG:
- yylval.arg = stab_to_arg(A_LVAL,yylval.stabval);
- /* FALL THROUGH */
- case RSTRING:
- if (!flinebeg)
- yyerror("Extra value in format");
- else {
- flinebeg->f_expr = yylval.arg;
- do {
- flinebeg = flinebeg->f_next;
- } while (flinebeg && flinebeg->f_size == 0);
- }
- break;
- case ',': case ';':
- continue;
- }
- }
- lex_newlines = FALSE;
- }
- }
- badform:
- bufptr = str_get(linestr);
- yyerror("Format not terminated");
- return froot.f_next;
-}
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 et:
+ */
https://perl5.git.perl.org / perl5.git / blobdiff