diff options
Diffstat (limited to 'usr.bin/yacc/output.c')
-rw-r--r-- | usr.bin/yacc/output.c | 1250 |
1 files changed, 1250 insertions, 0 deletions
diff --git a/usr.bin/yacc/output.c b/usr.bin/yacc/output.c new file mode 100644 index 0000000..f8fd1c5 --- /dev/null +++ b/usr.bin/yacc/output.c @@ -0,0 +1,1250 @@ +/* + * Copyright (c) 1989 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Robert Paul Corbett. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)output.c 5.7 (Berkeley) 5/24/93"; +#endif /* not lint */ + +#include "defs.h" + +static int nvectors; +static int nentries; +static short **froms; +static short **tos; +static short *tally; +static short *width; +static short *state_count; +static short *order; +static short *base; +static short *pos; +static int maxtable; +static short *table; +static short *check; +static int lowzero; +static int high; + + +output() +{ + free_itemsets(); + free_shifts(); + free_reductions(); + output_prefix(); + output_stored_text(); + output_defines(); + output_rule_data(); + output_yydefred(); + output_actions(); + free_parser(); + output_debug(); + output_stype(); + if (rflag) write_section(tables); + write_section(header); + output_trailing_text(); + write_section(body); + output_semantic_actions(); + write_section(trailer); +} + + +output_prefix() +{ + if (symbol_prefix == NULL) + symbol_prefix = "yy"; + else + { + ++outline; + fprintf(code_file, "#define yyparse %sparse\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yylex %slex\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyerror %serror\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yychar %schar\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyval %sval\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yylval %slval\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yydebug %sdebug\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yynerrs %snerrs\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyerrflag %serrflag\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyss %sss\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyssp %sssp\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyvs %svs\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyvsp %svsp\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yylhs %slhs\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yylen %slen\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yydefred %sdefred\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yydgoto %sdgoto\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yysindex %ssindex\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyrindex %srindex\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yygindex %sgindex\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yytable %stable\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yycheck %scheck\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyname %sname\n", symbol_prefix); + ++outline; + fprintf(code_file, "#define yyrule %srule\n", symbol_prefix); + } + ++outline; + fprintf(code_file, "#define YYPREFIX \"%s\"\n", symbol_prefix); +} + + +output_rule_data() +{ + register int i; + register int j; + + + fprintf(output_file, "short %slhs[] = {%42d,", symbol_prefix, + symbol_value[start_symbol]); + + j = 10; + for (i = 3; i < nrules; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", symbol_value[rlhs[i]]); + } + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + + fprintf(output_file, "short %slen[] = {%42d,", symbol_prefix, 2); + + j = 10; + for (i = 3; i < nrules; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + j++; + + fprintf(output_file, "%5d,", rrhs[i + 1] - rrhs[i] - 1); + } + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); +} + + +output_yydefred() +{ + register int i, j; + + fprintf(output_file, "short %sdefred[] = {%39d,", symbol_prefix, + (defred[0] ? defred[0] - 2 : 0)); + + j = 10; + for (i = 1; i < nstates; i++) + { + if (j < 10) + ++j; + else + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + + fprintf(output_file, "%5d,", (defred[i] ? defred[i] - 2 : 0)); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); +} + + +output_actions() +{ + nvectors = 2*nstates + nvars; + + froms = NEW2(nvectors, short *); + tos = NEW2(nvectors, short *); + tally = NEW2(nvectors, short); + width = NEW2(nvectors, short); + + token_actions(); + 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(); +} + + +token_actions() +{ + register int i, j; + register int shiftcount, reducecount; + register int max, min; + register short *actionrow, *r, *s; + register action *p; + + actionrow = NEW2(2*ntokens, short); + for (i = 0; i < nstates; ++i) + { + if (parser[i]) + { + for (j = 0; j < 2*ntokens; ++j) + actionrow[j] = 0; + + shiftcount = 0; + reducecount = 0; + for (p = parser[i]; p; p = p->next) + { + if (p->suppressed == 0) + { + if (p->action_code == SHIFT) + { + ++shiftcount; + actionrow[p->symbol] = p->number; + } + else if (p->action_code == REDUCE && p->number != defred[i]) + { + ++reducecount; + actionrow[p->symbol + ntokens] = p->number; + } + } + } + + tally[i] = shiftcount; + tally[nstates+i] = reducecount; + width[i] = 0; + width[nstates+i] = 0; + if (shiftcount > 0) + { + froms[i] = r = NEW2(shiftcount, short); + tos[i] = s = NEW2(shiftcount, short); + min = MAXSHORT; + max = 0; + for (j = 0; j < ntokens; ++j) + { + if (actionrow[j]) + { + if (min > symbol_value[j]) + min = symbol_value[j]; + if (max < symbol_value[j]) + max = symbol_value[j]; + *r++ = symbol_value[j]; + *s++ = actionrow[j]; + } + } + width[i] = max - min + 1; + } + if (reducecount > 0) + { + froms[nstates+i] = r = NEW2(reducecount, short); + tos[nstates+i] = s = NEW2(reducecount, short); + min = MAXSHORT; + max = 0; + for (j = 0; j < ntokens; ++j) + { + if (actionrow[ntokens+j]) + { + if (min > symbol_value[j]) + min = symbol_value[j]; + if (max < symbol_value[j]) + max = symbol_value[j]; + *r++ = symbol_value[j]; + *s++ = actionrow[ntokens+j] - 2; + } + } + width[nstates+i] = max - min + 1; + } + } + } + FREE(actionrow); +} + +goto_actions() +{ + register int i, j, k; + + state_count = NEW2(nstates, short); + + k = default_goto(start_symbol + 1); + fprintf(output_file, "short %sdgoto[] = {%40d,", symbol_prefix, k); + save_column(start_symbol + 1, k); + + j = 10; + for (i = start_symbol + 2; i < nsyms; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + k = default_goto(i); + fprintf(output_file, "%5d,", k); + save_column(i, k); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + FREE(state_count); +} + +int +default_goto(symbol) +int symbol; +{ + register int i; + register int m; + register int n; + register int default_state; + register int max; + + m = goto_map[symbol]; + n = goto_map[symbol + 1]; + + if (m == n) return (0); + + 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 = 0; + for (i = 0; i < nstates; i++) + { + if (state_count[i] > max) + { + max = state_count[i]; + default_state = i; + } + } + + return (default_state); +} + + + +save_column(symbol, default_state) +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; + + m = goto_map[symbol]; + n = goto_map[symbol + 1]; + + count = 0; + for (i = m; i < n; i++) + { + if (to_state[i] != default_state) + ++count; + } + if (count == 0) return; + + symno = symbol_value[symbol] + 2*nstates; + + froms[symno] = sp1 = sp = NEW2(count, short); + tos[symno] = sp2 = NEW2(count, short); + + for (i = m; i < n; i++) + { + if (to_state[i] != default_state) + { + *sp1++ = from_state[i]; + *sp2++ = to_state[i]; + } + } + + tally[symno] = count; + width[symno] = sp1[-1] - sp[0] + 1; +} + +sort_actions() +{ + register int i; + register int j; + register int k; + register int t; + register int w; + + order = NEW2(nvectors, short); + nentries = 0; + + for (i = 0; i < nvectors; i++) + { + if (tally[i] > 0) + { + t = tally[i]; + w = width[i]; + j = nentries - 1; + + while (j >= 0 && (width[order[j]] < w)) + j--; + + while (j >= 0 && (width[order[j]] == w) && (tally[order[j]] < t)) + j--; + + for (k = nentries - 1; k > j; k--) + order[k + 1] = order[k]; + + order[j + 1] = i; + nentries++; + } + } +} + + +pack_table() +{ + register int i; + register int place; + register int state; + + base = NEW2(nvectors, short); + pos = NEW2(nentries, short); + + maxtable = 1000; + table = NEW2(maxtable, short); + check = NEW2(maxtable, short); + + lowzero = 0; + high = 0; + + for (i = 0; i < maxtable; i++) + check[i] = -1; + + for (i = 0; i < nentries; i++) + { + state = matching_vector(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 function matching_vector determines if the vector specified by */ +/* the input parameter matches a previously considered vector. The */ +/* test at the start of the function checks if the vector represents */ +/* a row of shifts over terminal symbols or a row of reductions, or a */ +/* column of shifts over a nonterminal symbol. Berkeley Yacc does not */ +/* check if a column of shifts over a nonterminal symbols matches a */ +/* previously considered vector. Because of the nature of LR parsing */ +/* tables, no two columns can match. Therefore, the only possible */ +/* match would be between a row and a column. Such matches are */ +/* unlikely. Therefore, to save time, no attempt is made to see if a */ +/* column matches a previously considered vector. */ +/* */ +/* Matching_vector is poorly designed. The test could easily be made */ +/* faster. Also, it depends on the vectors being in a specific */ +/* order. */ + +int +matching_vector(vector) +int vector; +{ + register int i; + register int j; + register int k; + register int t; + register int w; + register int match; + register int prev; + + i = order[vector]; + if (i >= 2*nstates) + return (-1); + + t = tally[i]; + w = width[i]; + + for (prev = vector - 1; prev >= 0; prev--) + { + j = order[prev]; + if (width[j] != w || tally[j] != t) + return (-1); + + match = 1; + for (k = 0; match && k < t; k++) + { + if (tos[j][k] != tos[i][k] || froms[j][k] != froms[i][k]) + match = 0; + } + + if (match) + return (j); + } + + return (-1); +} + + + +int +pack_vector(vector) +int vector; +{ + register int i, j, k, l; + register int t; + register int loc; + register int ok; + register short *from; + register short *to; + int newmax; + + i = order[vector]; + t = tally[i]; + assert(t); + + from = froms[i]; + to = tos[i]; + + j = lowzero - from[0]; + for (k = 1; k < t; ++k) + if (lowzero - from[k] > j) + j = lowzero - from[k]; + for (;; ++j) + { + if (j == 0) + continue; + ok = 1; + for (k = 0; ok && k < t; k++) + { + loc = j + from[k]; + if (loc >= maxtable) + { + if (loc >= MAXTABLE) + fatal("maximum table size exceeded"); + + newmax = maxtable; + do { newmax += 200; } while (newmax <= loc); + table = (short *) REALLOC(table, newmax*sizeof(short)); + if (table == 0) no_space(); + check = (short *) REALLOC(check, newmax*sizeof(short)); + if (check == 0) no_space(); + for (l = maxtable; l < newmax; ++l) + { + table[l] = 0; + check[l] = -1; + } + maxtable = newmax; + } + + if (check[loc] != -1) + ok = 0; + } + for (k = 0; ok && k < vector; k++) + { + if (pos[k] == j) + ok = 0; + } + if (ok) + { + for (k = 0; k < t; k++) + { + loc = j + from[k]; + table[loc] = to[k]; + check[loc] = from[k]; + if (loc > high) high = loc; + } + + while (check[lowzero] != -1) + ++lowzero; + + return (j); + } + } +} + + + +output_base() +{ + register int i, j; + + fprintf(output_file, "short %ssindex[] = {%39d,", symbol_prefix, base[0]); + + j = 10; + for (i = 1; i < nstates; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", base[i]); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\nshort %srindex[] = {%39d,", symbol_prefix, + base[nstates]); + + j = 10; + for (i = nstates + 1; i < 2*nstates; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", base[i]); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\nshort %sgindex[] = {%39d,", symbol_prefix, + base[2*nstates]); + + j = 10; + for (i = 2*nstates + 1; i < nvectors - 1; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", base[i]); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + FREE(base); +} + + + +output_table() +{ + register int i; + register int j; + + ++outline; + fprintf(code_file, "#define YYTABLESIZE %d\n", high); + fprintf(output_file, "short %stable[] = {%40d,", symbol_prefix, + table[0]); + + j = 10; + for (i = 1; i <= high; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", table[i]); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + FREE(table); +} + + + +output_check() +{ + register int i; + register int j; + + fprintf(output_file, "short %scheck[] = {%40d,", symbol_prefix, + check[0]); + + j = 10; + for (i = 1; i <= high; i++) + { + if (j >= 10) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 1; + } + else + ++j; + + fprintf(output_file, "%5d,", check[i]); + } + + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + FREE(check); +} + + +int +is_C_identifier(name) +char *name; +{ + register char *s; + register int c; + + s = name; + c = *s; + if (c == '"') + { + c = *++s; + if (!isalpha(c) && c != '_' && c != '$') + return (0); + while ((c = *++s) != '"') + { + if (!isalnum(c) && c != '_' && c != '$') + return (0); + } + return (1); + } + + if (!isalpha(c) && c != '_' && c != '$') + return (0); + while (c = *++s) + { + if (!isalnum(c) && c != '_' && c != '$') + return (0); + } + return (1); +} + + +output_defines() +{ + register int c, i; + register char *s; + + for (i = 2; i < ntokens; ++i) + { + s = symbol_name[i]; + if (is_C_identifier(s)) + { + fprintf(code_file, "#define "); + if (dflag) fprintf(defines_file, "#define "); + c = *s; + if (c == '"') + { + while ((c = *++s) != '"') + { + putc(c, code_file); + if (dflag) putc(c, defines_file); + } + } + else + { + do + { + putc(c, code_file); + if (dflag) putc(c, defines_file); + } + while (c = *++s); + } + ++outline; + fprintf(code_file, " %d\n", symbol_value[i]); + if (dflag) fprintf(defines_file, " %d\n", symbol_value[i]); + } + } + + ++outline; + fprintf(code_file, "#define YYERRCODE %d\n", symbol_value[1]); + + if (dflag && unionized) + { + fclose(union_file); + union_file = fopen(union_file_name, "r"); + if (union_file == NULL) open_error(union_file_name); + while ((c = getc(union_file)) != EOF) + putc(c, defines_file); + fprintf(defines_file, " YYSTYPE;\nextern YYSTYPE %slval;\n", + symbol_prefix); + } +} + + +output_stored_text() +{ + register int c; + register FILE *in, *out; + + fclose(text_file); + text_file = fopen(text_file_name, "r"); + if (text_file == NULL) + open_error(text_file_name); + in = text_file; + if ((c = getc(in)) == EOF) + return; + out = code_file; + if (c == '\n') + ++outline; + putc(c, out); + while ((c = getc(in)) != EOF) + { + if (c == '\n') + ++outline; + putc(c, out); + } + if (!lflag) + fprintf(out, line_format, ++outline + 1, code_file_name); +} + + +output_debug() +{ + register int i, j, k, max; + char **symnam, *s; + + ++outline; + fprintf(code_file, "#define YYFINAL %d\n", final_state); + outline += 3; + fprintf(code_file, "#ifndef YYDEBUG\n#define YYDEBUG %d\n#endif\n", + tflag); + if (rflag) + fprintf(output_file, "#ifndef YYDEBUG\n#define YYDEBUG %d\n#endif\n", + tflag); + + max = 0; + for (i = 2; i < ntokens; ++i) + if (symbol_value[i] > max) + max = symbol_value[i]; + ++outline; + fprintf(code_file, "#define YYMAXTOKEN %d\n", max); + + symnam = (char **) MALLOC((max+1)*sizeof(char *)); + if (symnam == 0) no_space(); + + /* Note that it is not necessary to initialize the element */ + /* symnam[max]. */ + for (i = 0; i < max; ++i) + symnam[i] = 0; + for (i = ntokens - 1; i >= 2; --i) + symnam[symbol_value[i]] = symbol_name[i]; + symnam[0] = "end-of-file"; + + if (!rflag) ++outline; + fprintf(output_file, "#if YYDEBUG\nchar *%sname[] = {", symbol_prefix); + j = 80; + for (i = 0; i <= max; ++i) + { + if (s = symnam[i]) + { + if (s[0] == '"') + { + k = 7; + while (*++s != '"') + { + ++k; + if (*s == '\\') + { + k += 2; + if (*++s == '\\') + ++k; + } + } + j += k; + if (j > 80) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = k; + } + fprintf(output_file, "\"\\\""); + s = symnam[i]; + while (*++s != '"') + { + if (*s == '\\') + { + fprintf(output_file, "\\\\"); + if (*++s == '\\') + fprintf(output_file, "\\\\"); + else + putc(*s, output_file); + } + else + putc(*s, output_file); + } + fprintf(output_file, "\\\"\","); + } + else if (s[0] == '\'') + { + if (s[1] == '"') + { + j += 7; + if (j > 80) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 7; + } + fprintf(output_file, "\"'\\\"'\","); + } + else + { + k = 5; + while (*++s != '\'') + { + ++k; + if (*s == '\\') + { + k += 2; + if (*++s == '\\') + ++k; + } + } + j += k; + if (j > 80) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = k; + } + fprintf(output_file, "\"'"); + s = symnam[i]; + while (*++s != '\'') + { + if (*s == '\\') + { + fprintf(output_file, "\\\\"); + if (*++s == '\\') + fprintf(output_file, "\\\\"); + else + putc(*s, output_file); + } + else + putc(*s, output_file); + } + fprintf(output_file, "'\","); + } + } + else + { + k = strlen(s) + 3; + j += k; + if (j > 80) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = k; + } + putc('"', output_file); + do { putc(*s, output_file); } while (*++s); + fprintf(output_file, "\","); + } + } + else + { + j += 2; + if (j > 80) + { + if (!rflag) ++outline; + putc('\n', output_file); + j = 2; + } + fprintf(output_file, "0,"); + } + } + if (!rflag) outline += 2; + fprintf(output_file, "\n};\n"); + FREE(symnam); + + if (!rflag) ++outline; + fprintf(output_file, "char *%srule[] = {\n", symbol_prefix); + for (i = 2; i < nrules; ++i) + { + fprintf(output_file, "\"%s :", symbol_name[rlhs[i]]); + for (j = rrhs[i]; ritem[j] > 0; ++j) + { + s = symbol_name[ritem[j]]; + if (s[0] == '"') + { + fprintf(output_file, " \\\""); + while (*++s != '"') + { + if (*s == '\\') + { + if (s[1] == '\\') + fprintf(output_file, "\\\\\\\\"); + else + fprintf(output_file, "\\\\%c", s[1]); + ++s; + } + else + putc(*s, output_file); + } + fprintf(output_file, "\\\""); + } + else if (s[0] == '\'') + { + if (s[1] == '"') + fprintf(output_file, " '\\\"'"); + else if (s[1] == '\\') + { + if (s[2] == '\\') + fprintf(output_file, " '\\\\\\\\"); + else + fprintf(output_file, " '\\\\%c", s[2]); + s += 2; + while (*++s != '\'') + putc(*s, output_file); + putc('\'', output_file); + } + else + fprintf(output_file, " '%c'", s[1]); + } + else + fprintf(output_file, " %s", s); + } + if (!rflag) ++outline; + fprintf(output_file, "\",\n"); + } + + if (!rflag) outline += 2; + fprintf(output_file, "};\n#endif\n"); +} + + +output_stype() +{ + if (!unionized && ntags == 0) + { + outline += 3; + fprintf(code_file, "#ifndef YYSTYPE\ntypedef int YYSTYPE;\n#endif\n"); + } +} + + +output_trailing_text() +{ + register int c, last; + register FILE *in, *out; + + if (line == 0) + return; + + in = input_file; + out = code_file; + c = *cptr; + if (c == '\n') + { + ++lineno; + if ((c = getc(in)) == EOF) + return; + if (!lflag) + { + ++outline; + fprintf(out, line_format, lineno, input_file_name); + } + if (c == '\n') + ++outline; + putc(c, out); + last = c; + } + else + { + if (!lflag) + { + ++outline; + fprintf(out, line_format, lineno, input_file_name); + } + do { putc(c, out); } while ((c = *++cptr) != '\n'); + ++outline; + putc('\n', out); + last = '\n'; + } + + while ((c = getc(in)) != EOF) + { + if (c == '\n') + ++outline; + putc(c, out); + last = c; + } + + if (last != '\n') + { + ++outline; + putc('\n', out); + } + if (!lflag) + fprintf(out, line_format, ++outline + 1, code_file_name); +} + + +output_semantic_actions() +{ + register int c, last; + register FILE *out; + + fclose(action_file); + action_file = fopen(action_file_name, "r"); + if (action_file == NULL) + open_error(action_file_name); + + if ((c = getc(action_file)) == EOF) + return; + + out = code_file; + last = c; + if (c == '\n') + ++outline; + putc(c, out); + while ((c = getc(action_file)) != EOF) + { + if (c == '\n') + ++outline; + putc(c, out); + last = c; + } + + if (last != '\n') + { + ++outline; + putc('\n', out); + } + + if (!lflag) + fprintf(out, line_format, ++outline + 1, code_file_name); +} + + +free_itemsets() +{ + register core *cp, *next; + + FREE(state_table); + for (cp = first_state; cp; cp = next) + { + next = cp->next; + FREE(cp); + } +} + + +free_shifts() +{ + register shifts *sp, *next; + + FREE(shift_table); + for (sp = first_shift; sp; sp = next) + { + next = sp->next; + FREE(sp); + } +} + + + +free_reductions() +{ + register reductions *rp, *next; + + FREE(reduction_table); + for (rp = first_reduction; rp; rp = next) + { + next = rp->next; + FREE(rp); + } +} |