mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Python 3 │
|
|
│ https://docs.python.org/3/license.html │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#define PGEN
|
|
#include "third_party/python/Include/grammar.h"
|
|
#include "third_party/python/Include/pgenheaders.h"
|
|
|
|
/* Print a bunch of C initializers that represent a grammar */
|
|
|
|
/* Forward */
|
|
static void printarcs(int, dfa *, FILE *);
|
|
static void printstates(grammar *, FILE *);
|
|
static void printdfas(grammar *, FILE *);
|
|
static void printlabels(grammar *, FILE *);
|
|
|
|
void
|
|
printgrammar(grammar *g, FILE *fp)
|
|
{
|
|
fprintf(fp, "/* Generated by Parser/pgen */\n\n");
|
|
fprintf(fp, "#include \"pgenheaders.h\"\n");
|
|
fprintf(fp, "#include \"grammar.h\"\n");
|
|
fprintf(fp, "PyAPI_DATA(grammar) _PyParser_Grammar;\n");
|
|
printdfas(g, fp);
|
|
printlabels(g, fp);
|
|
fprintf(fp, "grammar _PyParser_Grammar = {\n");
|
|
fprintf(fp, " %d,\n", g->g_ndfas);
|
|
fprintf(fp, " dfas,\n");
|
|
fprintf(fp, " {%d, labels},\n", g->g_ll.ll_nlabels);
|
|
fprintf(fp, " %d\n", g->g_start);
|
|
fprintf(fp, "};\n");
|
|
}
|
|
|
|
void
|
|
printnonterminals(grammar *g, FILE *fp)
|
|
{
|
|
dfa *d;
|
|
int i;
|
|
|
|
fprintf(fp, "/* Generated by Parser/pgen */\n\n");
|
|
|
|
d = g->g_dfa;
|
|
for (i = g->g_ndfas; --i >= 0; d++)
|
|
fprintf(fp, "#define %s %d\n", d->d_name, d->d_type);
|
|
}
|
|
|
|
static void
|
|
printarcs(int i, dfa *d, FILE *fp)
|
|
{
|
|
arc *a;
|
|
state *s;
|
|
int j, k;
|
|
|
|
s = d->d_state;
|
|
for (j = 0; j < d->d_nstates; j++, s++) {
|
|
fprintf(fp, "static arc arcs_%d_%d[%d] = {\n",
|
|
i, j, s->s_narcs);
|
|
a = s->s_arc;
|
|
for (k = 0; k < s->s_narcs; k++, a++)
|
|
fprintf(fp, " {%d, %d},\n", a->a_lbl, a->a_arrow);
|
|
fprintf(fp, "};\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
printstates(grammar *g, FILE *fp)
|
|
{
|
|
state *s;
|
|
dfa *d;
|
|
int i, j;
|
|
|
|
d = g->g_dfa;
|
|
for (i = 0; i < g->g_ndfas; i++, d++) {
|
|
printarcs(i, d, fp);
|
|
fprintf(fp, "static state states_%d[%d] = {\n",
|
|
i, d->d_nstates);
|
|
s = d->d_state;
|
|
for (j = 0; j < d->d_nstates; j++, s++)
|
|
fprintf(fp, " {%d, arcs_%d_%d},\n",
|
|
s->s_narcs, i, j);
|
|
fprintf(fp, "};\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
printdfas(grammar *g, FILE *fp)
|
|
{
|
|
dfa *d;
|
|
int i, j, n;
|
|
|
|
printstates(g, fp);
|
|
fprintf(fp, "static dfa dfas[%d] = {\n", g->g_ndfas);
|
|
d = g->g_dfa;
|
|
for (i = 0; i < g->g_ndfas; i++, d++) {
|
|
fprintf(fp, " {%d, \"%s\", %d, %d, states_%d,\n",
|
|
d->d_type, d->d_name, d->d_initial, d->d_nstates, i);
|
|
fprintf(fp, " \"");
|
|
n = NBYTES(g->g_ll.ll_nlabels);
|
|
for (j = 0; j < n; j++)
|
|
fprintf(fp, "\\%03o", d->d_first[j] & 0xff);
|
|
fprintf(fp, "\"},\n");
|
|
}
|
|
fprintf(fp, "};\n");
|
|
}
|
|
|
|
static void
|
|
printlabels(grammar *g, FILE *fp)
|
|
{
|
|
label *l;
|
|
int i;
|
|
|
|
fprintf(fp, "static label labels[%d] = {\n", g->g_ll.ll_nlabels);
|
|
l = g->g_ll.ll_label;
|
|
for (i = g->g_ll.ll_nlabels; --i >= 0; l++) {
|
|
if (l->lb_str == NULL)
|
|
fprintf(fp, " {%d, 0},\n", l->lb_type);
|
|
else
|
|
fprintf(fp, " {%d, \"%s\"},\n",
|
|
l->lb_type, l->lb_str);
|
|
}
|
|
fprintf(fp, "};\n");
|
|
}
|