void
rdata(void) /* "read" data from virtual file */
{
int sect;
char ch;
inptr = data_file; /* Pointer to virtual data file */
clsses = 1;
for (;;) { /* read data sections */
sect = next() - '0'; /* 1st digit of section number */
#ifdef VERBOSE
printf("Section %c", sect + '0');
#endif
if ((ch = next()) != LF) { /* is there a second digit? */
FLUSHLF;
#ifdef VERBOSE
putchar(ch);
#endif
sect = 10 * sect + ch - '0';
}
#ifdef VERBOSE
putchar('\n');
#endif
switch (sect) {
case 0: /* finished reading database */
return;
case 1: /* long form descriptions */
rdesc(1);
break;
case 2: /* short form descriptions */
rdesc(2);
break;
case 3: /* travel table */
rtrav();
break;
case 4: /* vocabulary */
rvoc();
break;
case 5: /* object descriptions */
rdesc(5);
break;
case 6: /* arbitrary messages */
rdesc(6);
break;
case 7: /* object locations */
rlocs();
break;
case 8: /* action defaults */
rdflt();
break;
case 9: /* liquid assets */
rliq();
break;
case 10: /* class messages */
rdesc(10);
break;
case 11: /* hints */
rhints();
break;
case 12: /* magic messages */
rdesc(12);
break;
default:
printf("Invalid data section number: %d\n", sect);
for (;;)
putchar(next());
}
if (breakch != LF) /* routines return after "-1" */
FLUSHLF;
}
}
/* Unpickles a node from a file. Minimal checking
* is done. Specifically, no checks are done for
* sane arities, a bad file can crash the compiler */
static Node *unpickle(FILE *fd)
{
size_t i;
Ntype type;
Node *n;
type = rdbyte(fd);
if (type == Nnone)
return NULL;
n = mknode(Zloc, type);
n->loc.line = rdint(fd);
n->loc.file = file->file.nfiles - 1;
switch (n->type) {
case Nfile:
lappend(&n->file.files, &n->file.nfiles, rdstr(fd));
n->file.nuses = rdint(fd);
n->file.uses = zalloc(sizeof(Node*)*n->file.nuses);
for (i = 0; i < n->file.nuses; i++)
n->file.uses[i] = unpickle(fd);
n->file.nstmts = rdint(fd);
n->file.stmts = zalloc(sizeof(Node*)*n->file.nstmts);
for (i = 0; i < n->file.nstmts; i++)
n->file.stmts[i] = unpickle(fd);
n->file.globls = rdstab(fd, 0);
break;
case Nexpr:
n->expr.op = rdbyte(fd);
rdtype(fd, &n->expr.type);
n->expr.isconst = rdbool(fd);
n->expr.idx = unpickle(fd);
n->expr.nargs = rdint(fd);
n->expr.args = zalloc(sizeof(Node *)*n->expr.nargs);
for (i = 0; i < n->expr.nargs; i++)
n->expr.args[i] = unpickle(fd);
break;
case Nname:
if (rdbool(fd))
n->name.ns = rdstr(fd);
n->name.name = rdstr(fd);
break;
case Nuse:
n->use.islocal = rdbool(fd);
n->use.name = rdstr(fd);
break;
case Nlit:
n->lit.littype = rdbyte(fd);
rdtype(fd, &n->lit.type);
n->lit.nelt = rdint(fd);
switch (n->lit.littype) {
case Lchr: n->lit.chrval = rdint(fd); break;
case Lint: n->lit.intval = rdint(fd); break;
case Lflt: n->lit.fltval = rdflt(fd); break;
case Lstr: rdlenstr(fd, &n->lit.strval); break;
case Llbl: n->lit.lblval = rdstr(fd); break;
case Lbool: n->lit.boolval = rdbool(fd); break;
case Lfunc: n->lit.fnval = unpickle(fd); break;
}
break;
case Nloopstmt:
n->loopstmt.init = unpickle(fd);
n->loopstmt.cond = unpickle(fd);
n->loopstmt.step = unpickle(fd);
n->loopstmt.body = unpickle(fd);
break;
case Niterstmt:
n->iterstmt.elt = unpickle(fd);
n->iterstmt.seq = unpickle(fd);
n->iterstmt.body = unpickle(fd);
break;
case Nmatchstmt:
n->matchstmt.val = unpickle(fd);
n->matchstmt.nmatches = rdint(fd);
n->matchstmt.matches = zalloc(sizeof(Node *)*n->matchstmt.nmatches);
for (i = 0; i < n->matchstmt.nmatches; i++)
n->matchstmt.matches[i] = unpickle(fd);
break;
case Nmatch:
n->match.pat = unpickle(fd);
n->match.block = unpickle(fd);
break;
case Nifstmt:
n->ifstmt.cond = unpickle(fd);
n->ifstmt.iftrue = unpickle(fd);
n->ifstmt.iffalse = unpickle(fd);
break;
case Nblock:
n->block.scope = rdstab(fd, 0);
n->block.nstmts = rdint(fd);
n->block.stmts = zalloc(sizeof(Node *)*n->block.nstmts);
n->block.scope->super = curstab();
pushstab(n->func.scope->super);
for (i = 0; i < n->block.nstmts; i++)
n->block.stmts[i] = unpickle(fd);
popstab();
break;
case Ndecl:
n->decl.did = ndecls; /* unique within file */
/* sym */
n->decl.name = unpickle(fd);
rdtype(fd, &n->decl.type);
/* symflags */
n->decl.isconst = rdbool(fd);
n->decl.isgeneric = rdbool(fd);
n->decl.isextern = rdbool(fd);
n->decl.isnoret = rdbool(fd);
n->decl.ispkglocal = rdbool(fd);
/* init */
n->decl.init = unpickle(fd);
lappend(&decls, &ndecls, n);
break;
case Nfunc:
rdtype(fd, &n->func.type);
n->func.scope = rdstab(fd, 1);
n->func.nargs = rdint(fd);
n->func.args = zalloc(sizeof(Node *)*n->func.nargs);
n->func.scope->super = curstab();
pushstab(n->func.scope->super);
for (i = 0; i < n->func.nargs; i++)
n->func.args[i] = unpickle(fd);
n->func.body = unpickle(fd);
popstab();
break;
case Nimpl:
n->impl.traitname = unpickle(fd);
i = rdint(fd);
rdtrait(fd, &n->impl.trait, NULL);
rdtype(fd, &n->impl.type);
n->impl.ndecls = rdint(fd);
n->impl.decls = zalloc(sizeof(Node *)*n->impl.ndecls);
for (i = 0; i < n->impl.ndecls; i++)
n->impl.decls[i] = rdsym(fd, n->impl.trait);
break;
case Nnone:
die("Nnone should not be seen as node type!");
break;
}
return n;
}
