02111-1307, USA. */
-/* functions to output parsing data to various files. Entries are:
+/* The parser tables consist of these tables.
+ Starred ones needed only for the semantic parser.
+ Double starred are output only if switches are set.
- output_headers ()
+ yytranslate = vector mapping yylex's token numbers into bison's token
+ numbers.
-Output constant strings to the beginning of certain files.
+ ** yytname = vector of string-names indexed by bison token number
- output_trailers()
+ ** yytoknum = vector of yylex token numbers corresponding to entries
+ in yytname
-Output constant strings to the ends of certain files.
+ yyrline = vector of line-numbers of all rules. For yydebug printouts.
- output ()
+ yyrhs = vector of items of all rules.
+ This is exactly what ritems contains. For yydebug and for semantic
+ parser.
-Output the parsing tables and the parser code to ftable.
+ yyprhs[r] = index in yyrhs of first item for rule r.
-The parser tables consist of these tables.
-Starred ones needed only for the semantic parser.
-Double starred are output only if switches are set.
+ yyr1[r] = symbol number of symbol that rule r derives.
-yytranslate = vector mapping yylex's token numbers into bison's token numbers.
+ yyr2[r] = number of symbols composing right hand side of rule r.
-** yytname = vector of string-names indexed by bison token number
+ * yystos[s] = the symbol number of the symbol that leads to state s.
-** yytoknum = vector of yylex token numbers corresponding to entries in yytname
+ yydefact[s] = default rule to reduce with in state s,
+ when yytable doesn't specify something else to do.
+ Zero means the default is an error.
-yyrline = vector of line-numbers of all rules. For yydebug printouts.
+ yydefgoto[i] = default state to go to after a reduction of a rule that
+ generates variable ntokens + i, except when yytable
+ specifies something else to do.
-yyrhs = vector of items of all rules.
- This is exactly what ritems contains. For yydebug and for semantic
- parser.
+ yypact[s] = index in yytable of the portion describing state s.
+ The lookahead token's type is used to index that portion
+ to find out what to do.
-yyprhs[r] = index in yyrhs of first item for rule r.
+ If the value in yytable is positive,
+ we shift the token and go to that state.
-yyr1[r] = symbol number of symbol that rule r derives.
+ If the value is negative, it is minus a rule number to reduce by.
-yyr2[r] = number of symbols composing right hand side of rule r.
+ If the value is zero, the default action from yydefact[s] is used.
-* yystos[s] = the symbol number of the symbol that leads to state s.
+ yypgoto[i] = the index in yytable of the portion describing
+ what to do after reducing a rule that derives variable i + ntokens.
+ This portion is indexed by the parser state number, s,
+ as of before the text for this nonterminal was read.
+ The value from yytable is the state to go to if
+ the corresponding value in yycheck is s.
-yydefact[s] = default rule to reduce with in state s,
- when yytable doesn't specify something else to do.
- Zero means the default is an error.
+ yytable = a vector filled with portions for different uses,
+ found via yypact and yypgoto.
-yydefgoto[i] = default state to go to after a reduction of a rule that
- generates variable ntokens + i, except when yytable
- specifies something else to do.
+ yycheck = a vector indexed in parallel with yytable.
+ It indicates, in a roundabout way, the bounds of the
+ portion you are trying to examine.
-yypact[s] = index in yytable of the portion describing state s.
- The lookahead token's type is used to index that portion
- to find out what to do.
-
- If the value in yytable is positive,
- we shift the token and go to that state.
-
- If the value is negative, it is minus a rule number to reduce by.
-
- If the value is zero, the default action from yydefact[s] is used.
-
-yypgoto[i] = the index in yytable of the portion describing
- what to do after reducing a rule that derives variable i + ntokens.
- This portion is indexed by the parser state number, s,
- as of before the text for this nonterminal was read.
- The value from yytable is the state to go to if
- the corresponding value in yycheck is s.
-
-yytable = a vector filled with portions for different uses,
- found via yypact and yypgoto.
-
-yycheck = a vector indexed in parallel with yytable.
- It indicates, in a roundabout way, the bounds of the
- portion you are trying to examine.
-
- Suppose that the portion of yytable starts at index p
- and the index to be examined within the portion is i.
- Then if yycheck[p+i] != i, i is outside the bounds
- of what is actually allocated, and the default
- (from yydefact or yydefgoto) should be used.
- Otherwise, yytable[p+i] should be used.
-
-YYFINAL = the state number of the termination state.
-YYFLAG = most negative short int. Used to flag ??
-YYNTBASE = ntokens.
+ Suppose that the portion of yytable starts at index p
+ and the index to be examined within the portion is i.
+ Then if yycheck[p+i] != i, i is outside the bounds
+ of what is actually allocated, and the default
+ (from yydefact or yydefgoto) should be used.
+ Otherwise, yytable[p+i] should be used.
+ YYFINAL = the state number of the termination state.
+ YYFLAG = most negative short int. Used to flag ??
+ YYNTBASE = ntokens.
*/
-#include <stdio.h>
#include "system.h"
-#include "machine.h"
+#include "getargs.h"
#include "alloc.h"
#include "files.h"
#include "gram.h"
#include "state.h"
#include "complain.h"
-
-
-extern int debugflag;
-extern int nolinesflag;
-extern int noparserflag;
-extern int toknumflag;
+#include "output.h"
extern char **tags;
extern int *user_toknums;
extern short *from_state;
extern short *to_state;
-extern void output_headers PARAMS((void));
-extern void output_trailers PARAMS((void));
-extern void output PARAMS((void));
-
-static void output_token_translations PARAMS((void));
-static void output_gram PARAMS((void));
-static void output_stos PARAMS((void));
-static void output_rule_data PARAMS((void));
-static void output_defines PARAMS((void));
-static void output_actions PARAMS((void));
-static void token_actions PARAMS((void));
-static void save_row PARAMS((int));
-static void goto_actions PARAMS((void));
-static void save_column PARAMS((int, int));
-static void sort_actions PARAMS((void));
-static void pack_table PARAMS((void));
-static void output_base PARAMS((void));
-static void output_table PARAMS((void));
-static void output_check PARAMS((void));
-static void output_parser PARAMS((void));
-static void output_program PARAMS((void));
-static void free_shifts PARAMS((void));
-static void free_reductions PARAMS((void));
-static void free_itemsets PARAMS((void));
-static int action_row PARAMS((int));
-static int default_goto PARAMS((int));
-static int matching_state PARAMS((int));
-static int pack_vector PARAMS((int));
-
-extern void berror PARAMS((const char *));
-extern void reader_output_yylsp PARAMS((FILE *));
+extern void reader_output_yylsp PARAMS ((FILE *));
static int nvectors;
static int nentries;
-#define GUARDSTR "\n#include \"%s\"\nextern int yyerror;\n\
-extern int yycost;\nextern char * yymsg;\nextern YYSTYPE yyval;\n\n\
-yyguard(n, yyvsp, yylsp)\nregister int n;\nregister YYSTYPE *yyvsp;\n\
+#define GUARDSTR \
+"\n\
+#include \"%s\"\n\
+extern int yyerror;\n\
+extern int yycost;\n\
+extern char * yymsg;\n\
+extern YYSTYPE yyval;\n\
+\n\
+yyguard(n, yyvsp, yylsp)\n\
+register int n;\n\
+register YYSTYPE *yyvsp;\n\
register YYLTYPE *yylsp;\n\
-{\n yyerror = 0;\nyycost = 0;\n yymsg = 0;\nswitch (n)\n {"
-
-#define ACTSTR "\n#include \"%s\"\nextern YYSTYPE yyval;\
-\nextern int yychar;\
-yyaction(n, yyvsp, yylsp)\nregister int n;\nregister YYSTYPE *yyvsp;\n\
-register YYLTYPE *yylsp;\n{\n switch (n)\n{"
+{\n\
+ yyerror = 0;\n\
+ yycost = 0;\n\
+ yymsg = 0;\n\
+ switch (n)\n\
+ {"
+
+#define ACTSTR \
+"\n\
+#include \"%s\"\n\
+extern YYSTYPE yyval;\n\
+extern int yychar;\n\
+\n\
+yyaction(n, yyvsp, yylsp)\n\
+register int n;\n\
+register YYSTYPE *yyvsp;\n\
+register YYLTYPE *yylsp;\n\
+{\n\
+ switch (n)\n\
+ {"
#define ACTSTR_SIMPLE "\n switch (yyn) {\n"
+/*------------------------------------------------------------.
+| Output constant strings to the beginning of certain files. |
+`------------------------------------------------------------*/
+
void
output_headers (void)
{
if (semantic_parser)
- fprintf(fguard, GUARDSTR, attrsfile);
+ fprintf (fguard, GUARDSTR, attrsfile);
if (noparserflag)
- return;
+ return;
- fprintf(faction, (semantic_parser ? ACTSTR : ACTSTR_SIMPLE), attrsfile);
+ fprintf (faction, (semantic_parser ? ACTSTR : ACTSTR_SIMPLE), attrsfile);
/* if (semantic_parser) JF moved this below
fprintf(ftable, "#include \"%s\"\n", attrsfile);
fprintf(ftable, "#include <stdio.h>\n\n");
/* Rename certain symbols if -p was specified. */
if (spec_name_prefix)
{
- fprintf(ftable, "#define yyparse %sparse\n", spec_name_prefix);
- fprintf(ftable, "#define yylex %slex\n", spec_name_prefix);
- fprintf(ftable, "#define yyerror %serror\n", spec_name_prefix);
- fprintf(ftable, "#define yylval %slval\n", spec_name_prefix);
- fprintf(ftable, "#define yychar %schar\n", spec_name_prefix);
- fprintf(ftable, "#define yydebug %sdebug\n", spec_name_prefix);
- fprintf(ftable, "#define yynerrs %snerrs\n", spec_name_prefix);
+ fprintf (ftable, "#define yyparse %sparse\n", spec_name_prefix);
+ fprintf (ftable, "#define yylex %slex\n", spec_name_prefix);
+ fprintf (ftable, "#define yyerror %serror\n", spec_name_prefix);
+ fprintf (ftable, "#define yylval %slval\n", spec_name_prefix);
+ fprintf (ftable, "#define yychar %schar\n", spec_name_prefix);
+ fprintf (ftable, "#define yydebug %sdebug\n", spec_name_prefix);
+ fprintf (ftable, "#define yynerrs %snerrs\n", spec_name_prefix);
}
}
+/*-------------------------------------------------------.
+| Output constant strings to the ends of certain files. |
+`-------------------------------------------------------*/
+
void
output_trailers (void)
{
if (semantic_parser)
- fprintf(fguard, "\n }\n}\n");
+ fprintf (fguard, "\n }\n}\n");
- fprintf(faction, "\n");
+ fprintf (faction, "\n");
if (noparserflag)
- return;
+ return;
if (semantic_parser)
- fprintf(faction, " }\n");
- fprintf(faction, "}\n");
+ fprintf (faction, " }\n");
+ fprintf (faction, "}\n");
}
-void
-output (void)
-{
- int c;
-
- /* output_token_defines(ftable); / * JF put out token defines FIRST */
- if (!semantic_parser) /* JF Put out other stuff */
- {
- rewind(fattrs);
- while ((c=getc(fattrs))!=EOF)
- putc(c,ftable);
- }
- reader_output_yylsp(ftable);
- if (debugflag)
- fprintf(ftable, "#ifndef YYDEBUG\n#define YYDEBUG %d\n#endif\n\n",
- !!debugflag);
-
- if (semantic_parser)
- fprintf(ftable, "#include \"%s\"\n", attrsfile);
-
- if (! noparserflag)
- fprintf(ftable, "#include <stdio.h>\n\n");
-
- /* Make "const" do nothing if not in ANSI C. */
- fprintf (ftable, "#ifndef __cplusplus\n#ifndef __STDC__\n#define const\n#endif\n#endif\n\n");
-
- free_itemsets();
- output_defines();
- output_token_translations();
-/* if (semantic_parser) */
- /* This is now unconditional because debugging printouts can use it. */
- output_gram();
- FREE(ritem);
- if (semantic_parser)
- output_stos();
- output_rule_data();
- output_actions();
- if (! noparserflag)
- output_parser();
- output_program();
-}
-
static void
output_token_translations (void)
{
- register int i, j;
-/* register short *sp; JF unused */
+ int i, j;
+/* short *sp; JF unused */
if (translations)
{
- fprintf(ftable,
- "\n#define YYTRANSLATE(x) ((unsigned)(x) <= %d ? yytranslate[x] : %d)\n",
- max_user_token_number, nsyms);
+ fprintf (ftable,
+ "\n#define YYTRANSLATE(x) ((unsigned)(x) <= %d ? yytranslate[x] : %d)\n",
+ max_user_token_number, nsyms);
- if (ntokens < 127) /* play it very safe; check maximum element value. */
- fprintf(ftable, "\nstatic const char yytranslate[] = { 0");
+ if (ntokens < 127) /* play it very safe; check maximum element value. */
+ fprintf (ftable, "\nstatic const char yytranslate[] = { 0");
else
- fprintf(ftable, "\nstatic const short yytranslate[] = { 0");
+ fprintf (ftable, "\nstatic const short yytranslate[] = { 0");
j = 10;
for (i = 1; i <= max_user_token_number; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", token_translations[i]);
+ fprintf (ftable, "%6d", token_translations[i]);
}
- fprintf(ftable, "\n};\n");
+ fprintf (ftable, "\n};\n");
}
else
{
- fprintf(ftable, "\n#define YYTRANSLATE(x) (x)\n");
+ fprintf (ftable, "\n#define YYTRANSLATE(x) (x)\n");
}
}
static void
output_gram (void)
{
- register int i;
- register int j;
- register short *sp;
+ int i;
+ int j;
+ short *sp;
/* With the ordinary parser,
yyprhs and yyrhs are needed only for yydebug. */
/* With the noparser option, all tables are generated */
- if (! semantic_parser && ! noparserflag)
- fprintf(ftable, "\n#if YYDEBUG != 0");
+ if (!semantic_parser && !noparserflag)
+ fprintf (ftable, "\n#if YYDEBUG != 0");
- fprintf(ftable, "\nstatic const short yyprhs[] = { 0");
+ fprintf (ftable, "\nstatic const short yyprhs[] = { 0");
j = 10;
for (i = 1; i <= nrules; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", rrhs[i]);
+ fprintf (ftable, "%6d", rrhs[i]);
}
- fprintf(ftable, "\n};\n");
+ fprintf (ftable, "\n};\n");
- fprintf(ftable, "\nstatic const short yyrhs[] = {%6d", ritem[0]);
+ fprintf (ftable, "\nstatic const short yyrhs[] = {%6d", ritem[0]);
j = 10;
for (sp = ritem + 1; *sp; sp++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
}
if (*sp > 0)
- fprintf(ftable, "%6d", *sp);
+ fprintf (ftable, "%6d", *sp);
else
- fprintf(ftable, " 0");
+ fprintf (ftable, " 0");
}
- fprintf(ftable, "\n};\n");
+ fprintf (ftable, "\n};\n");
- if (! semantic_parser && ! noparserflag)
- fprintf(ftable, "\n#endif\n");
+ if (!semantic_parser && !noparserflag)
+ fprintf (ftable, "\n#endif\n");
}
static void
output_stos (void)
{
- register int i;
- register int j;
+ int i;
+ int j;
- fprintf(ftable, "\nstatic const short yystos[] = { 0");
+ fprintf (ftable, "\nstatic const short yystos[] = { 0");
j = 10;
for (i = 1; i < nstates; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", accessing_symbol[i]);
+ fprintf (ftable, "%6d", accessing_symbol[i]);
}
- fprintf(ftable, "\n};\n");
+ fprintf (ftable, "\n};\n");
}
static void
output_rule_data (void)
{
- register int i;
- register int j;
+ int i;
+ int j;
fputs ("\n\
#if YYDEBUG != 0\n\
j = 10;
for (i = 1; i <= nrules; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", rline[i]);
+ fprintf (ftable, "%6d", rline[i]);
}
- fprintf(ftable, "\n};\n#endif\n\n");
+ fprintf (ftable, "\n};\n#endif\n\n");
if (toknumflag || noparserflag)
{
- fprintf(ftable, "#define YYNTOKENS %d\n", ntokens);
- fprintf(ftable, "#define YYNNTS %d\n", nvars);
- fprintf(ftable, "#define YYNRULES %d\n", nrules);
- fprintf(ftable, "#define YYNSTATES %d\n", nstates);
- fprintf(ftable, "#define YYMAXUTOK %d\n\n", max_user_token_number);
+ fprintf (ftable, "#define YYNTOKENS %d\n", ntokens);
+ fprintf (ftable, "#define YYNNTS %d\n", nvars);
+ fprintf (ftable, "#define YYNRULES %d\n", nrules);
+ fprintf (ftable, "#define YYNSTATES %d\n", nstates);
+ fprintf (ftable, "#define YYMAXUTOK %d\n\n", max_user_token_number);
}
- if (! toknumflag && ! noparserflag)
- fprintf(ftable, "\n#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)\n\n");
+ if (!toknumflag && !noparserflag)
+ fprintf (ftable, "\n#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)\n\n");
/* Output the table of symbol names. */
- fprintf(ftable,
- "static const char * const yytname[] = { \"%s\"",
- tags[0]);
+ fprintf (ftable,
+ "static const char * const yytname[] = { \"%s\"", tags[0]);
j = strlen (tags[0]) + 44;
for (i = 1; i < nsyms; i++)
- /* this used to be i<=nsyms, but that output a final "" symbol
- almost by accident */
+ /* this used to be i<=nsyms, but that output a final "" symbol
+ almost by accident */
{
- register char *p;
- putc(',', ftable);
+ char *p;
+ putc (',', ftable);
j++;
if (j > 75)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 0;
}
{
if (*p == '"' || *p == '\\')
{
- fprintf(ftable, "\\%c", *p);
+ fprintf (ftable, "\\%c", *p);
j += 2;
}
else if (*p == '\n')
{
- fprintf(ftable, "\\n");
+ fprintf (ftable, "\\n");
j += 2;
}
else if (*p == '\t')
{
- fprintf(ftable, "\\t");
+ fprintf (ftable, "\\t");
j += 2;
}
else if (*p == '\b')
{
- fprintf(ftable, "\\b");
+ fprintf (ftable, "\\b");
j += 2;
}
else if (*p < 040 || *p >= 0177)
{
- fprintf(ftable, "\\%03o", *p);
+ fprintf (ftable, "\\%03o", *p);
j += 4;
}
else
{
- putc(*p, ftable);
+ putc (*p, ftable);
j++;
}
}
/* add a NULL entry to list of tokens */
fprintf (ftable, ", NULL\n};\n");
- if (! toknumflag && ! noparserflag)
+ if (!toknumflag && !noparserflag)
fprintf (ftable, "#endif\n\n");
/* Output YYTOKNUM. */
if (toknumflag)
{
- fprintf(ftable, "static const short yytoknum[] = { 0");
+ fprintf (ftable, "static const short yytoknum[] = { 0");
j = 10;
- for (i = 1; i <= ntokens; i++) {
- putc(',', ftable);
- if (j >= 10)
- {
- putc('\n', ftable);
- j = 1;
- }
- else
- j++;
- fprintf(ftable, "%6d", user_toknums[i]);
- }
- fprintf(ftable, "\n};\n\n");
+ for (i = 1; i <= ntokens; i++)
+ {
+ putc (',', ftable);
+ if (j >= 10)
+ {
+ putc ('\n', ftable);
+ j = 1;
+ }
+ else
+ j++;
+ fprintf (ftable, "%6d", user_toknums[i]);
+ }
+ fprintf (ftable, "\n};\n\n");
}
/* Output YYR1. */
j = 10;
for (i = 1; i <= nrules; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", rlhs[i]);
+ fprintf (ftable, "%6d", rlhs[i]);
}
- FREE(rlhs + 1);
+ FREE (rlhs + 1);
fputs ("\n\
};\n\
\n", ftable);
j = 10;
for (i = 1; i < nrules; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", rrhs[i + 1] - rrhs[i] - 1);
+ fprintf (ftable, "%6d", rrhs[i + 1] - rrhs[i] - 1);
}
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
- putc('\n', ftable);
+ putc ('\n', ftable);
- fprintf(ftable, "%6d\n};\n", nitems - rrhs[nrules] - 1);
- FREE(rrhs + 1);
+ fprintf (ftable, "%6d\n};\n", nitems - rrhs[nrules] - 1);
+ FREE (rrhs + 1);
}
static void
output_defines (void)
{
- fprintf(ftable, "\n\n#define\tYYFINAL\t\t%d\n", final_state);
- fprintf(ftable, "#define\tYYFLAG\t\t%d\n", MINSHORT);
- fprintf(ftable, "#define\tYYNTBASE\t%d\n", ntokens);
-}
-
-
-
-/* compute and output yydefact, yydefgoto, yypact, yypgoto, yytable and yycheck. */
-
-static void
-output_actions (void)
-{
- nvectors = nstates + nvars;
-
- froms = NEW2(nvectors, short *);
- tos = NEW2(nvectors, short *);
- tally = NEW2(nvectors, short);
- width = NEW2(nvectors, short);
-
- token_actions();
- free_shifts();
- free_reductions();
- FREE(lookaheads);
- FREE(LA);
- FREE(LAruleno);
- FREE(accessing_symbol);
-
- goto_actions();
- FREE(goto_map + ntokens);
- FREE(from_state);
- FREE(to_state);
-
- sort_actions();
- pack_table();
- output_base();
- output_table();
- output_check();
-}
-
-
-
-/* Figure out the actions for the specified state, indexed by
- lookahead token type.
-
- The yydefact table is output now. The detailed info is saved for
- putting into yytable later. */
-
-static void
-token_actions (void)
-{
- register int i;
- register int j;
- register int k;
-
- actrow = NEW2(ntokens, short);
-
- k = action_row(0);
- fprintf(ftable, "\nstatic const short yydefact[] = {%6d", k);
- save_row(0);
-
- j = 10;
- for (i = 1; i < nstates; i++)
- {
- putc(',', ftable);
-
- if (j >= 10)
- {
- putc('\n', ftable);
- j = 1;
- }
- else
- {
- j++;
- }
-
- k = action_row(i);
- fprintf(ftable, "%6d", k);
- save_row(i);
- }
-
- fprintf(ftable, "\n};\n");
- FREE(actrow);
+ fprintf (ftable, "\n\n#define\tYYFINAL\t\t%d\n", final_state);
+ fprintf (ftable, "#define\tYYFLAG\t\t%d\n", MINSHORT);
+ fprintf (ftable, "#define\tYYNTBASE\t%d\n", ntokens);
}
-
-/* Decide what to do for each type of token if seen as the lookahead
- token in specified state. The value returned is used as the
- default action (yydefact) for the state. In addition, actrow is
- filled with what to do for each kind of token, index by symbol
- number, with zero meaning do the default action. The value
- MINSHORT, a very negative number, means this situation is an error.
- The parser recognizes this value specially.
-
- This is where conflicts are resolved. The loop over lookahead
- rules considered lower-numbered rules last, and the last rule
- considered that likes a token gets to handle it. */
+/*------------------------------------------------------------------.
+| Decide what to do for each type of token if seen as the lookahead |
+| token in specified state. The value returned is used as the |
+| default action (yydefact) for the state. In addition, actrow is |
+| filled with what to do for each kind of token, index by symbol |
+| number, with zero meaning do the default action. The value |
+| MINSHORT, a very negative number, means this situation is an |
+| error. The parser recognizes this value specially. |
+| |
+| This is where conflicts are resolved. The loop over lookahead |
+| rules considered lower-numbered rules last, and the last rule |
+| considered that likes a token gets to handle it. |
+`------------------------------------------------------------------*/
static int
action_row (int state)
{
- register int i;
- register int j;
- register int k;
- register int m = 0;
- register int n = 0;
- register int count;
- register int default_rule;
- register int nreds;
- register int max;
- register int rule;
- register int shift_state;
- register int symbol;
- register unsigned mask;
- register unsigned *wordp;
- register reductions *redp;
- register shifts *shiftp;
- register errs *errp;
- int nodefault = 0; /* set nonzero to inhibit having any default reduction */
+ int i;
+ int j;
+ int k;
+ int m = 0;
+ int n = 0;
+ int count;
+ int default_rule;
+ int nreds;
+ int max;
+ int rule;
+ int shift_state;
+ int symbol;
+ unsigned mask;
+ unsigned *wordp;
+ reductions *redp;
+ shifts *shiftp;
+ errs *errp;
+ int nodefault = 0; /* set nonzero to inhibit having any default reduction */
for (i = 0; i < ntokens; i++)
actrow[i] = 0;
for (i = n - 1; i >= m; i--)
{
- rule = - LAruleno[i];
+ rule = -LAruleno[i];
wordp = LA + i * tokensetsize;
mask = 1;
/* and find each token which the rule finds acceptable
- to come next */
+ to come next */
for (j = 0; j < ntokens; j++)
{
/* and record this rule as the rule to use if that
for (i = 0; i < k; i++)
{
shift_state = shiftp->shifts[i];
- if (! shift_state) continue;
+ if (!shift_state)
+ continue;
symbol = accessing_symbol[shift_state];
- if (ISVAR(symbol))
+ if (ISVAR (symbol))
break;
actrow[symbol] = shift_state;
/* Now find the most common reduction and make it the default action
for this state. */
- if (nreds >= 1 && ! nodefault)
+ if (nreds >= 1 && !nodefault)
{
if (consistent[state])
default_rule = redp->rules[0];
for (i = m; i < n; i++)
{
count = 0;
- rule = - LAruleno[i];
+ rule = -LAruleno[i];
for (j = 0; j < ntokens; j++)
{
actrow[j] = 0;
}
- default_rule = - default_rule;
+ default_rule = -default_rule;
}
}
}
static void
save_row (int state)
{
- register int i;
- register int count;
- register short *sp;
- register short *sp1;
- register short *sp2;
+ int i;
+ int count;
+ short *sp;
+ short *sp1;
+ short *sp2;
count = 0;
for (i = 0; i < ntokens; i++)
if (count == 0)
return;
- froms[state] = sp1 = sp = NEW2(count, short);
- tos[state] = sp2 = NEW2(count, short);
+ froms[state] = sp1 = sp = NEW2 (count, short);
+ tos[state] = sp2 = NEW2 (count, short);
for (i = 0; i < ntokens; i++)
{
}
-
-/* figure out what to do after reducing with each rule,
- depending on the saved state from before the beginning
- of parsing the data that matched this rule.
-
- The yydefgoto table is output now. The detailed info
- is saved for putting into yytable later. */
+/*------------------------------------------------------------------.
+| Figure out the actions for the specified state, indexed by |
+| lookahead token type. |
+| |
+| The yydefact table is output now. The detailed info is saved for |
+| putting into yytable later. |
+`------------------------------------------------------------------*/
static void
-goto_actions (void)
+token_actions (void)
{
- register int i;
- register int j;
- register int k;
+ int i;
+ int j;
+ int k;
- state_count = NEW2(nstates, short);
+ actrow = NEW2 (ntokens, short);
- k = default_goto(ntokens);
- fprintf(ftable, "\nstatic const short yydefgoto[] = {%6d", k);
- save_column(ntokens, k);
+ k = action_row (0);
+ fprintf (ftable, "\nstatic const short yydefact[] = {%6d", k);
+ save_row (0);
j = 10;
- for (i = ntokens + 1; i < nsyms; i++)
+ for (i = 1; i < nstates; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- k = default_goto(i);
- fprintf(ftable, "%6d", k);
- save_column(i, k);
+ k = action_row (i);
+ fprintf (ftable, "%6d", k);
+ save_row (i);
}
- fprintf(ftable, "\n};\n");
- FREE(state_count);
+ fprintf (ftable, "\n};\n");
+ FREE (actrow);
}
-
-static int
-default_goto (int symbol)
+static void
+free_shifts (void)
{
- register int i;
- register int m;
- register int n;
- register int default_state;
- register int max;
+ shifts *sp, *sptmp; /* JF derefrenced freed ptr */
- m = goto_map[symbol];
- n = goto_map[symbol + 1];
+ FREE (shift_table);
- if (m == n)
- return -1;
+ for (sp = first_shift; sp; sp = sptmp)
+ {
+ sptmp = sp->next;
+ FREE (sp);
+ }
+}
- for (i = 0; i < nstates; i++)
- state_count[i] = 0;
- for (i = m; i < n; i++)
- state_count[to_state[i]]++;
+static void
+free_reductions (void)
+{
+ reductions *rp, *rptmp; /* JF fixed freed ptr */
- max = 0;
- default_state = -1;
+ FREE (reduction_table);
- for (i = 0; i < nstates; i++)
+ for (rp = first_reduction; rp; rp = rptmp)
{
- if (state_count[i] > max)
- {
- max = state_count[i];
- default_state = i;
- }
+ rptmp = rp->next;
+ FREE (rp);
}
-
- return default_state;
}
+
static void
save_column (int symbol, int default_state)
{
- register int i;
- register int m;
- register int n;
- register short *sp;
- register short *sp1;
- register short *sp2;
- register int count;
- register int symno;
+ int i;
+ int m;
+ int n;
+ short *sp;
+ short *sp1;
+ short *sp2;
+ int count;
+ int symno;
m = goto_map[symbol];
n = goto_map[symbol + 1];
symno = symbol - ntokens + nstates;
- froms[symno] = sp1 = sp = NEW2(count, short);
- tos[symno] = sp2 = NEW2(count, short);
+ froms[symno] = sp1 = sp = NEW2 (count, short);
+ tos[symno] = sp2 = NEW2 (count, short);
for (i = m; i < n; i++)
{
width[symno] = sp1[-1] - sp[0] + 1;
}
+static int
+default_goto (int symbol)
+{
+ int i;
+ int m;
+ int n;
+ int default_state;
+ int max;
+
+ m = goto_map[symbol];
+ n = goto_map[symbol + 1];
+
+ if (m == n)
+ return -1;
+
+ for (i = 0; i < nstates; i++)
+ state_count[i] = 0;
+
+ for (i = m; i < n; i++)
+ state_count[to_state[i]]++;
+
+ max = 0;
+ default_state = -1;
+
+ for (i = 0; i < nstates; i++)
+ {
+ if (state_count[i] > max)
+ {
+ max = state_count[i];
+ default_state = i;
+ }
+ }
+
+ return default_state;
+}
+
+
+/*-------------------------------------------------------------------.
+| Figure out what to do after reducing with each rule, depending on |
+| the saved state from before the beginning of parsing the data that |
+| matched this rule. |
+| |
+| The YYDEFGOTO table is output now. The detailed info is saved for |
+| putting into YYTABLE later. |
+`-------------------------------------------------------------------*/
+
+static void
+goto_actions (void)
+{
+ int i, j, k;
+
+ state_count = NEW2 (nstates, short);
+
+ k = default_goto (ntokens);
+ fprintf (ftable, "\nstatic const short yydefgoto[] = {%6d", k);
+ save_column (ntokens, k);
+
+ j = 10;
+ for (i = ntokens + 1; i < nsyms; i++)
+ {
+ putc (',', ftable);
+
+ if (j >= 10)
+ {
+ putc ('\n', ftable);
+ j = 1;
+ }
+ else
+ {
+ j++;
+ }
+
+ k = default_goto (i);
+ fprintf (ftable, "%6d", k);
+ save_column (i, k);
+ }
+
+ fprintf (ftable, "\n};\n");
+ FREE (state_count);
+}
/* The next few functions decide how to pack the actions and gotos
static void
sort_actions (void)
{
- register int i;
- register int j;
- register int k;
- register int t;
- register int w;
+ int i;
+ int j;
+ int k;
+ int t;
+ int w;
- order = NEW2(nvectors, short);
+ order = NEW2 (nvectors, short);
nentries = 0;
for (i = 0; i < nvectors; i++)
}
-static void
-pack_table (void)
-{
- register int i;
- register int place;
- register int state;
-
- base = NEW2(nvectors, short);
- pos = NEW2(nentries, short);
- table = NEW2(MAXTABLE, short);
- check = NEW2(MAXTABLE, short);
-
- lowzero = 0;
- high = 0;
-
- for (i = 0; i < nvectors; i++)
- base[i] = MINSHORT;
-
- for (i = 0; i < MAXTABLE; i++)
- check[i] = -1;
-
- for (i = 0; i < nentries; i++)
- {
- state = matching_state(i);
-
- if (state < 0)
- place = pack_vector(i);
- else
- place = base[state];
-
- pos[i] = place;
- base[order[i]] = place;
- }
-
- for (i = 0; i < nvectors; i++)
- {
- if (froms[i])
- FREE(froms[i]);
- if (tos[i])
- FREE(tos[i]);
- }
-
- FREE(froms);
- FREE(tos);
- FREE(pos);
-}
-
-
-
static int
matching_state (int vector)
{
- register int i;
- register int j;
- register int k;
- register int t;
- register int w;
- register int match;
- register int prev;
+ int i;
+ int j;
+ int k;
+ int t;
+ int w;
+ int match;
+ int prev;
i = order[vector];
if (i >= nstates)
}
-
static int
pack_vector (int vector)
{
- register int i;
- register int j;
- register int k;
- register int t;
- register int loc = 0;
- register int ok;
- register short *from;
- register short *to;
+ int i;
+ int j;
+ int k;
+ int t;
+ int loc = 0;
+ int ok;
+ short *from;
+ short *to;
i = order[vector];
t = tally[i];
if (t == 0)
- berror("pack_vector");
+ berror ("pack_vector");
from = froms[i];
to = tos[i];
}
}
- berror("pack_vector");
- return 0; /* JF keep lint happy */
+ berror ("pack_vector");
+ return 0; /* JF keep lint happy */
}
+static void
+pack_table (void)
+{
+ int i;
+ int place;
+ int state;
+
+ base = NEW2 (nvectors, short);
+ pos = NEW2 (nentries, short);
+ table = NEW2 (MAXTABLE, short);
+ check = NEW2 (MAXTABLE, short);
+
+ lowzero = 0;
+ high = 0;
+
+ for (i = 0; i < nvectors; i++)
+ base[i] = MINSHORT;
+
+ for (i = 0; i < MAXTABLE; i++)
+ check[i] = -1;
+
+ for (i = 0; i < nentries; i++)
+ {
+ state = matching_state (i);
+
+ if (state < 0)
+ place = pack_vector (i);
+ else
+ place = base[state];
+
+ pos[i] = place;
+ base[order[i]] = place;
+ }
+
+ for (i = 0; i < nvectors; i++)
+ {
+ if (froms[i])
+ FREE (froms[i]);
+ if (tos[i])
+ FREE (tos[i]);
+ }
+
+ FREE (froms);
+ FREE (tos);
+ FREE (pos);
+}
/* the following functions output yytable, yycheck
and the vectors whose elements index the portion starts */
static void
output_base (void)
{
- register int i;
- register int j;
+ int i;
+ int j;
- fprintf(ftable, "\nstatic const short yypact[] = {%6d", base[0]);
+ fprintf (ftable, "\nstatic const short yypact[] = {%6d", base[0]);
j = 10;
for (i = 1; i < nstates; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", base[i]);
+ fprintf (ftable, "%6d", base[i]);
}
- fprintf(ftable, "\n};\n\nstatic const short yypgoto[] = {%6d", base[nstates]);
+ fprintf (ftable, "\n};\n\nstatic const short yypgoto[] = {%6d",
+ base[nstates]);
j = 10;
for (i = nstates + 1; i < nvectors; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", base[i]);
+ fprintf (ftable, "%6d", base[i]);
}
- fprintf(ftable, "\n};\n");
- FREE(base);
+ fprintf (ftable, "\n};\n");
+ FREE (base);
}
static void
output_table (void)
{
- register int i;
- register int j;
+ int i;
+ int j;
- fprintf(ftable, "\n\n#define\tYYLAST\t\t%d\n\n", high);
- fprintf(ftable, "\nstatic const short yytable[] = {%6d", table[0]);
+ fprintf (ftable, "\n\n#define\tYYLAST\t\t%d\n\n", high);
+ fprintf (ftable, "\nstatic const short yytable[] = {%6d", table[0]);
j = 10;
for (i = 1; i <= high; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", table[i]);
+ fprintf (ftable, "%6d", table[i]);
}
- fprintf(ftable, "\n};\n");
- FREE(table);
+ fprintf (ftable, "\n};\n");
+ FREE (table);
}
static void
output_check (void)
{
- register int i;
- register int j;
+ int i;
+ int j;
- fprintf(ftable, "\nstatic const short yycheck[] = {%6d", check[0]);
+ fprintf (ftable, "\nstatic const short yycheck[] = {%6d", check[0]);
j = 10;
for (i = 1; i <= high; i++)
{
- putc(',', ftable);
+ putc (',', ftable);
if (j >= 10)
{
- putc('\n', ftable);
+ putc ('\n', ftable);
j = 1;
}
else
j++;
}
- fprintf(ftable, "%6d", check[i]);
+ fprintf (ftable, "%6d", check[i]);
}
- fprintf(ftable, "\n};\n");
- FREE(check);
+ fprintf (ftable, "\n};\n");
+ FREE (check);
}
+/* compute and output yydefact, yydefgoto, yypact, yypgoto, yytable
+ and yycheck. */
+static void
+output_actions (void)
+{
+ nvectors = nstates + nvars;
+
+ froms = NEW2 (nvectors, short *);
+ tos = NEW2 (nvectors, short *);
+ tally = NEW2 (nvectors, short);
+ width = NEW2 (nvectors, short);
+
+ token_actions ();
+ free_shifts ();
+ free_reductions ();
+ FREE (lookaheads);
+ FREE (LA);
+ FREE (LAruleno);
+ FREE (accessing_symbol);
+
+ goto_actions ();
+ FREE (goto_map + ntokens);
+ FREE (from_state);
+ FREE (to_state);
+
+ sort_actions ();
+ pack_table ();
+ output_base ();
+ output_table ();
+ output_check ();
+}
/* copy the parser code into the ftable file at the end. */
static void
output_parser (void)
{
- register int c;
+ int c;
#ifdef DONTDEF
FILE *fpars;
#else
#endif
if (pure_parser)
- fprintf(ftable, "#define YYPURE 1\n\n");
+ fprintf (ftable, "#define YYPURE 1\n\n");
-#ifdef DONTDEF /* JF no longer needed 'cuz open_extra_files changes the
- currently open parser from bison.simple to bison.hairy */
+#ifdef DONTDEF /* JF no longer needed 'cuz open_extra_files changes the
+ currently open parser from bison.simple to bison.hairy */
if (semantic_parser)
fpars = fparser;
- else fpars = fparser1;
+ else
+ fpars = fparser1;
#endif
/* Loop over lines in the standard parser file. */
{
int write_line = 1;
- c = getc(fpars);
+ c = getc (fpars);
/* See if the line starts with `#line.
- If so, set write_line to 0. */
+ If so, set write_line to 0. */
if (nolinesflag)
if (c == '#')
{
- c = getc(fpars);
+ c = getc (fpars);
if (c == 'l')
{
- c = getc(fpars);
+ c = getc (fpars);
if (c == 'i')
{
- c = getc(fpars);
+ c = getc (fpars);
if (c == 'n')
{
- c = getc(fpars);
+ c = getc (fpars);
if (c == 'e')
write_line = 0;
else
- fprintf(ftable, "#lin");
+ fprintf (ftable, "#lin");
}
else
- fprintf(ftable, "#li");
+ fprintf (ftable, "#li");
}
else
- fprintf(ftable, "#l");
+ fprintf (ftable, "#l");
}
else
- fprintf(ftable, "#");
+ fprintf (ftable, "#");
}
/* now write out the line... */
- for (; c != '\n' && c != EOF; c = getc(fpars))
- if (write_line) {
- if (c == '$')
- {
- /* `$' in the parser file indicates where to put the actions.
- Copy them in at this point. */
- rewind(faction);
- for(c=getc(faction);c!=EOF;c=getc(faction))
- putc(c,ftable);
- }
- else
- putc(c, ftable);
- }
+ for (; c != '\n' && c != EOF; c = getc (fpars))
+ if (write_line)
+ {
+ if (c == '$')
+ {
+ /* `$' in the parser file indicates where to put the actions.
+ Copy them in at this point. */
+ rewind (faction);
+ for (c = getc (faction); c != EOF; c = getc (faction))
+ putc (c, ftable);
+ }
+ else
+ putc (c, ftable);
+ }
if (c == EOF)
break;
- putc(c, ftable);
+ putc (c, ftable);
}
}
static void
output_program (void)
{
- register int c;
+ int c;
if (!nolinesflag)
- fprintf(ftable, "#line %d \"%s\"\n", lineno, infile);
+ fprintf (ftable, "#line %d \"%s\"\n", lineno, infile);
- c = getc(finput);
+ c = getc (finput);
while (c != EOF)
{
- putc(c, ftable);
- c = getc(finput);
+ putc (c, ftable);
+ c = getc (finput);
}
}
static void
free_itemsets (void)
{
- register core *cp,*cptmp;
+ core *cp, *cptmp;
- FREE(state_table);
+ FREE (state_table);
for (cp = first_state; cp; cp = cptmp)
{
- cptmp=cp->next;
- FREE(cp);
+ cptmp = cp->next;
+ FREE (cp);
}
}
-static void
-free_shifts (void)
-{
- register shifts *sp,*sptmp;/* JF derefrenced freed ptr */
+/*----------------------------------------------------------.
+| Output the parsing tables and the parser code to ftable. |
+`----------------------------------------------------------*/
- FREE(shift_table);
+void
+output (void)
+{
+ int c;
- for (sp = first_shift; sp; sp = sptmp)
+ /* output_token_defines(ftable); / * JF put out token defines FIRST */
+ if (!semantic_parser) /* JF Put out other stuff */
{
- sptmp=sp->next;
- FREE(sp);
+ rewind (fattrs);
+ while ((c = getc (fattrs)) != EOF)
+ putc (c, ftable);
}
-}
-
+ reader_output_yylsp (ftable);
+ if (debugflag)
+ fputs ("\
+#ifndef YYDEBUG\n\
+#define YYDEBUG 1\n\
+#endif\n\
+\n",
+ ftable);
-static void
-free_reductions (void)
-{
- register reductions *rp,*rptmp;/* JF fixed freed ptr */
+ if (semantic_parser)
+ fprintf (ftable, "#include \"%s\"\n", attrsfile);
- FREE(reduction_table);
+ if (!noparserflag)
+ fprintf (ftable, "#include <stdio.h>\n\n");
- for (rp = first_reduction; rp; rp = rptmp)
- {
- rptmp=rp->next;
- FREE(rp);
- }
+ /* Make "const" do nothing if not in ANSI C. */
+ fputs ("\
+#ifndef __cplusplus\n\
+# ifndef __STDC__\n\
+# define const\n\
+# endif\n\
+#endif\n\
+\n",
+ ftable);
+
+ free_itemsets ();
+ output_defines ();
+ output_token_translations ();
+/* if (semantic_parser) */
+ /* This is now unconditional because debugging printouts can use it. */
+ output_gram ();
+ FREE (ritem);
+ if (semantic_parser)
+ output_stos ();
+ output_rule_data ();
+ output_actions ();
+ if (!noparserflag)
+ output_parser ();
+ output_program ();
}
projects / bison.git / blobdiff