Parser/printgrammar.c

   1 /***********************************************************
   2 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
   3 The Netherlands.
   4
   5                         All Rights Reserved
   6
   7 Permission to use, copy, modify, and distribute this software and its
   8 documentation for any purpose and without fee is hereby granted,
   9 provided that the above copyright notice appear in all copies and that
  10 both that copyright notice and this permission notice appear in
  11 supporting documentation, and that the names of Stichting Mathematisch
  12 Centrum or CWI or Corporation for National Research Initiatives or
  13 CNRI not be used in advertising or publicity pertaining to
  14 distribution of the software without specific, written prior
  15 permission.
  16
  17 While CWI is the initial source for this software, a modified version
  18 is made available by the Corporation for National Research Initiatives
  19 (CNRI) at the Internet address ftp://ftp.python.org.
  20
  21 STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
  22 REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
  23 MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
  24 CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
  25 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  26 PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  27 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  28 PERFORMANCE OF THIS SOFTWARE.
  29
  30 ******************************************************************/
  31
  32 /* Print a bunch of C initializers that represent a grammar */
  33
  34 #include "pgenheaders.h"
  35 #include "grammar.h"
  36
  37 /* Forward */
  38 static void printarcs Py_PROTO((int, dfa *, FILE *));
  39 static void printstates Py_PROTO((grammar *, FILE *));
  40 static void printdfas Py_PROTO((grammar *, FILE *));
  41 static void printlabels Py_PROTO((grammar *, FILE *));
  42
  43 void
  44 printgrammar(g, fp)
  45         grammar *g;
  46         FILE *fp;
  47 {
  48         fprintf(fp, "#include \"pgenheaders.h\"\n");
  49         fprintf(fp, "#include \"grammar.h\"\n");
  50         printdfas(g, fp);
  51         printlabels(g, fp);
  52         fprintf(fp, "grammar _PyParser_Grammar = {\n");
  53         fprintf(fp, "\t%d,\n", g->g_ndfas);
  54         fprintf(fp, "\tdfas,\n");
  55         fprintf(fp, "\t{%d, labels},\n", g->g_ll.ll_nlabels);
  56         fprintf(fp, "\t%d\n", g->g_start);
  57         fprintf(fp, "};\n");
  58 }
  59
  60 void
  61 printnonterminals(g, fp)
  62         grammar *g;
  63         FILE *fp;
  64 {
  65         dfa *d;
  66         int i;
  67
  68         d = g->g_dfa;
  69         for (i = g->g_ndfas; --i >= 0; d++)
  70                 fprintf(fp, "#define %s %d\n", d->d_name, d->d_type);
  71 }
  72
  73 static void
  74 printarcs(i, d, fp)
  75         int i;
  76         dfa *d;
  77         FILE *fp;
  78 {
  79         arc *a;
  80         state *s;
  81         int j, k;
  82
  83         s = d->d_state;
  84         for (j = 0; j < d->d_nstates; j++, s++) {
  85                 fprintf(fp, "static arc arcs_%d_%d[%d] = {\n",
  86                         i, j, s->s_narcs);
  87                 a = s->s_arc;
  88                 for (k = 0; k < s->s_narcs; k++, a++)
  89                         fprintf(fp, "\t{%d, %d},\n", a->a_lbl, a->a_arrow);
  90                 fprintf(fp, "};\n");
  91         }
  92 }
  93
  94 static void
  95 printstates(g, fp)
  96         grammar *g;
  97         FILE *fp;
  98 {
  99         state *s;
 100         dfa *d;
 101         int i, j;
 102
 103         d = g->g_dfa;
 104         for (i = 0; i < g->g_ndfas; i++, d++) {
 105                 printarcs(i, d, fp);
 106                 fprintf(fp, "static state states_%d[%d] = {\n",
 107                         i, d->d_nstates);
 108                 s = d->d_state;
 109                 for (j = 0; j < d->d_nstates; j++, s++)
 110                         fprintf(fp, "\t{%d, arcs_%d_%d},\n",
 111                                 s->s_narcs, i, j);
 112                 fprintf(fp, "};\n");
 113         }
 114 }
 115
 116 static void
 117 printdfas(g, fp)
 118         grammar *g;
 119         FILE *fp;
 120 {
 121         dfa *d;
 122         int i, j;
 123
 124         printstates(g, fp);
 125         fprintf(fp, "static dfa dfas[%d] = {\n", g->g_ndfas);
 126         d = g->g_dfa;
 127         for (i = 0; i < g->g_ndfas; i++, d++) {
 128                 fprintf(fp, "\t{%d, \"%s\", %d, %d, states_%d,\n",
 129                         d->d_type, d->d_name, d->d_initial, d->d_nstates, i);
 130                 fprintf(fp, "\t \"");
 131                 for (j = 0; j < NBYTES(g->g_ll.ll_nlabels); j++)
 132                         fprintf(fp, "\\%03o", d->d_first[j] & 0xff);
 133                 fprintf(fp, "\"},\n");
 134         }
 135         fprintf(fp, "};\n");
 136 }
 137
 138 static void
 139 printlabels(g, fp)
 140         grammar *g;
 141         FILE *fp;
 142 {
 143         label *l;
 144         int i;
 145
 146         fprintf(fp, "static label labels[%d] = {\n", g->g_ll.ll_nlabels);
 147         l = g->g_ll.ll_label;
 148         for (i = g->g_ll.ll_nlabels; --i >= 0; l++) {
 149                 if (l->lb_str == NULL)
 150                         fprintf(fp, "\t{%d, 0},\n", l->lb_type);
 151                 else
 152                         fprintf(fp, "\t{%d, \"%s\"},\n",
 153                                 l->lb_type, l->lb_str);
 154         }
 155         fprintf(fp, "};\n");
 156 }