ref: f616c63b399fed4f78121f387be9599e8e0c2b4c
dir: /sys/src/cmd/spin/pangen3.c/
/***** spin: pangen3.c *****/
/* Copyright (c) 1989-2003 by Lucent Technologies, Bell Laboratories. */
/* All Rights Reserved. This software is for educational purposes only. */
/* No guarantee whatsoever is expressed or implied by the distribution of */
/* this code. Permission is given to distribute this code provided that */
/* this introductory message is not removed and no monies are exchanged. */
/* Software written by Gerard J. Holzmann. For tool documentation see: */
/* http://spinroot.com/ */
/* Send all bug-reports and/or questions to: bugs@spinroot.com */
#include "spin.h"
#include "y.tab.h"
extern FILE *th;
extern int claimnr, eventmapnr;
typedef struct SRC {
short ln, st; /* linenr, statenr */
Symbol *fn; /* filename */
struct SRC *nxt;
} SRC;
static int col;
static Symbol *lastfnm;
static Symbol lastdef;
static int lastfrom;
static SRC *frst = (SRC *) 0;
static SRC *skip = (SRC *) 0;
extern void sr_mesg(FILE *, int, int);
static void
putnr(int n)
{
if (col++ == 8)
{ fprintf(th, "\n\t");
col = 1;
}
fprintf(th, "%3d, ", n);
}
static void
putfnm(int j, Symbol *s)
{
if (lastfnm && lastfnm == s && j != -1)
return;
if (lastfnm)
fprintf(th, "{ %s, %d, %d },\n\t",
lastfnm->name,
lastfrom,
j-1);
lastfnm = s;
lastfrom = j;
}
static void
putfnm_flush(int j)
{
if (lastfnm)
fprintf(th, "{ %s, %d, %d }\n",
lastfnm->name,
lastfrom, j);
}
void
putskip(int m) /* states that need not be reached */
{ SRC *tmp;
for (tmp = skip; tmp; tmp = tmp->nxt)
if (tmp->st == m)
return;
tmp = (SRC *) emalloc(sizeof(SRC));
tmp->st = (short) m;
tmp->nxt = skip;
skip = tmp;
}
void
unskip(int m) /* a state that needs to be reached after all */
{ SRC *tmp, *lst=(SRC *)0;
for (tmp = skip; tmp; lst = tmp, tmp = tmp->nxt)
if (tmp->st == m)
{ if (tmp == skip)
skip = skip->nxt;
else
lst->nxt = tmp->nxt;
break;
}
}
void
putsrc(Element *e) /* match states to source lines */
{ SRC *tmp;
int n, m;
if (!e || !e->n) return;
n = e->n->ln;
m = e->seqno;
for (tmp = frst; tmp; tmp = tmp->nxt)
if (tmp->st == m)
{ if (tmp->ln != n || tmp->fn != e->n->fn)
printf("putsrc mismatch %d - %d, file %s\n", n,
tmp->ln, tmp->fn->name);
return;
}
tmp = (SRC *) emalloc(sizeof(SRC));
tmp->ln = (short) n;
tmp->st = (short) m;
tmp->fn = e->n->fn;
tmp->nxt = frst;
frst = tmp;
}
static void
dumpskip(int n, int m)
{ SRC *tmp, *lst;
int j;
fprintf(th, "uchar reached%d [] = {\n\t", m);
for (j = 0, col = 0; j <= n; j++)
{ lst = (SRC *) 0;
for (tmp = skip; tmp; lst = tmp, tmp = tmp->nxt)
if (tmp->st == j)
{ putnr(1);
if (lst)
lst->nxt = tmp->nxt;
else
skip = tmp->nxt;
break;
}
if (!tmp)
putnr(0);
}
fprintf(th, "};\n");
if (m == claimnr)
fprintf(th, "#define reached_claim reached%d\n", m);
if (m == eventmapnr)
fprintf(th, "#define reached_event reached%d\n", m);
skip = (SRC *) 0;
}
void
dumpsrc(int n, int m)
{ SRC *tmp, *lst;
int j;
fprintf(th, "short src_ln%d [] = {\n\t", m);
for (j = 0, col = 0; j <= n; j++)
{ lst = (SRC *) 0;
for (tmp = frst; tmp; lst = tmp, tmp = tmp->nxt)
if (tmp->st == j)
{ putnr(tmp->ln);
break;
}
if (!tmp)
putnr(0);
}
fprintf(th, "};\n");
lastfnm = (Symbol *) 0;
lastdef.name = "\"-\"";
fprintf(th, "S_F_MAP src_file%d [] = {\n\t", m);
for (j = 0, col = 0; j <= n; j++)
{ lst = (SRC *) 0;
for (tmp = frst; tmp; lst = tmp, tmp = tmp->nxt)
if (tmp->st == j)
{ putfnm(j, tmp->fn);
if (lst)
lst->nxt = tmp->nxt;
else
frst = tmp->nxt;
break;
}
if (!tmp)
putfnm(j, &lastdef);
}
putfnm_flush(j);
fprintf(th, "};\n");
if (m == claimnr)
fprintf(th, "#define src_claim src_ln%d\n", m);
if (m == eventmapnr)
fprintf(th, "#define src_event src_ln%d\n", m);
frst = (SRC *) 0;
dumpskip(n, m);
}
#define Cat0(x) comwork(fd,now->lft,m); fprintf(fd, x); \
comwork(fd,now->rgt,m)
#define Cat1(x) fprintf(fd,"("); Cat0(x); fprintf(fd,")")
#define Cat2(x,y) fprintf(fd,x); comwork(fd,y,m)
#define Cat3(x,y,z) fprintf(fd,x); comwork(fd,y,m); fprintf(fd,z)
static int
symbolic(FILE *fd, Lextok *tv)
{ Lextok *n; extern Lextok *Mtype;
int cnt = 1;
if (tv->ismtyp)
for (n = Mtype; n; n = n->rgt, cnt++)
if (cnt == tv->val)
{ fprintf(fd, "%s", n->lft->sym->name);
return 1;
}
return 0;
}
static void
comwork(FILE *fd, Lextok *now, int m)
{ Lextok *v;
int i, j;
if (!now) { fprintf(fd, "0"); return; }
switch (now->ntyp) {
case CONST: sr_mesg(fd, now->val, now->ismtyp); break;
case '!': Cat3("!(", now->lft, ")"); break;
case UMIN: Cat3("-(", now->lft, ")"); break;
case '~': Cat3("~(", now->lft, ")"); break;
case '/': Cat1("/"); break;
case '*': Cat1("*"); break;
case '-': Cat1("-"); break;
case '+': Cat1("+"); break;
case '%': Cat1("%%"); break;
case '&': Cat1("&"); break;
case '^': Cat1("^"); break;
case '|': Cat1("|"); break;
case LE: Cat1("<="); break;
case GE: Cat1(">="); break;
case GT: Cat1(">"); break;
case LT: Cat1("<"); break;
case NE: Cat1("!="); break;
case EQ: Cat1("=="); break;
case OR: Cat1("||"); break;
case AND: Cat1("&&"); break;
case LSHIFT: Cat1("<<"); break;
case RSHIFT: Cat1(">>"); break;
case RUN: fprintf(fd, "run %s(", now->sym->name);
for (v = now->lft; v; v = v->rgt)
if (v == now->lft)
{ comwork(fd, v->lft, m);
} else
{ Cat2(",", v->lft);
}
fprintf(fd, ")");
break;
case LEN: putname(fd, "len(", now->lft, m, ")");
break;
case FULL: putname(fd, "full(", now->lft, m, ")");
break;
case EMPTY: putname(fd, "empty(", now->lft, m, ")");
break;
case NFULL: putname(fd, "nfull(", now->lft, m, ")");
break;
case NEMPTY: putname(fd, "nempty(", now->lft, m, ")");
break;
case 's': putname(fd, "", now->lft, m, now->val?"!!":"!");
for (v = now->rgt, i=0; v; v = v->rgt, i++)
{ if (v != now->rgt) fprintf(fd,",");
if (!symbolic(fd, v->lft))
comwork(fd,v->lft,m);
}
break;
case 'r': putname(fd, "", now->lft, m, "?");
switch (now->val) {
case 0: break;
case 1: fprintf(fd, "?"); break;
case 2: fprintf(fd, "<"); break;
case 3: fprintf(fd, "?<"); break;
}
for (v = now->rgt, i=0; v; v = v->rgt, i++)
{ if (v != now->rgt) fprintf(fd,",");
if (!symbolic(fd, v->lft))
comwork(fd,v->lft,m);
}
if (now->val >= 2)
fprintf(fd, ">");
break;
case 'R': putname(fd, "", now->lft, m, now->val?"??[":"?[");
for (v = now->rgt, i=0; v; v = v->rgt, i++)
{ if (v != now->rgt) fprintf(fd,",");
if (!symbolic(fd, v->lft))
comwork(fd,v->lft,m);
}
fprintf(fd, "]");
break;
case ENABLED: Cat3("enabled(", now->lft, ")");
break;
case EVAL: Cat3("eval(", now->lft, ")");
break;
case NONPROGRESS:
fprintf(fd, "np_");
break;
case PC_VAL: Cat3("pc_value(", now->lft, ")");
break;
case 'c': Cat3("(", now->lft, ")");
break;
case '?': if (now->lft)
{ Cat3("( (", now->lft, ") -> ");
}
if (now->rgt)
{ Cat3("(", now->rgt->lft, ") : ");
Cat3("(", now->rgt->rgt, ") )");
}
break;
case ASGN: comwork(fd,now->lft,m);
fprintf(fd," = ");
comwork(fd,now->rgt,m);
break;
case PRINT: { char c, buf[512];
strncpy(buf, now->sym->name, 510);
for (i = j = 0; i < 510; i++, j++)
{ c = now->sym->name[i];
buf[j] = c;
if (c == '\\') buf[++j] = c;
if (c == '\"') buf[j] = '\'';
if (c == '\0') break;
}
if (now->ntyp == PRINT)
fprintf(fd, "printf");
else
fprintf(fd, "annotate");
fprintf(fd, "(%s", buf);
}
for (v = now->lft; v; v = v->rgt)
{ Cat2(",", v->lft);
}
fprintf(fd, ")");
break;
case PRINTM: fprintf(fd, "printm(");
comwork(fd, now->lft, m);
fprintf(fd, ")");
break;
case NAME: putname(fd, "", now, m, "");
break;
case 'p': putremote(fd, now, m);
break;
case 'q': fprintf(fd, "%s", now->sym->name);
break;
case C_EXPR:
case C_CODE: fprintf(fd, "{%s}", now->sym->name);
break;
case ASSERT: Cat3("assert(", now->lft, ")");
break;
case '.': fprintf(fd, ".(goto)"); break;
case GOTO: fprintf(fd, "goto %s", now->sym->name); break;
case BREAK: fprintf(fd, "break"); break;
case ELSE: fprintf(fd, "else"); break;
case '@': fprintf(fd, "-end-"); break;
case D_STEP: fprintf(fd, "D_STEP"); break;
case ATOMIC: fprintf(fd, "ATOMIC"); break;
case NON_ATOMIC: fprintf(fd, "sub-sequence"); break;
case IF: fprintf(fd, "IF"); break;
case DO: fprintf(fd, "DO"); break;
case UNLESS: fprintf(fd, "unless"); break;
case TIMEOUT: fprintf(fd, "timeout"); break;
default: if (isprint(now->ntyp))
fprintf(fd, "'%c'", now->ntyp);
else
fprintf(fd, "%d", now->ntyp);
break;
}
}
void
comment(FILE *fd, Lextok *now, int m)
{ extern short terse, nocast;
terse=nocast=1;
comwork(fd, now, m);
terse=nocast=0;
}