static Node *
traitfn(Srcloc loc, Trait *tr, char *fn, Type *ty)
{
Node *proto, *dcl, *var;
char *name;
size_t i;
for (i = 0; i < tr->nproto; i++) {
name = declname(tr->proto[i]);
if (!strcmp(fn, name)) {
proto = tr->proto[i];
dcl = htget(proto->decl.impls, ty);
var = mkexpr(loc, Ovar, dcl->decl.name, NULL);
var->expr.type = dcl->decl.type;
var->expr.did = dcl->decl.did;
return var;
}
}
return NULL;
}
/* gets the byte offset of 'memb' within the aggregate type 'aggr' */
static size_t offset(Node *aggr, Node *memb)
{
Type *ty;
Node **nl;
size_t i;
size_t off;
ty = tybase(exprtype(aggr));
if (ty->type == Typtr)
ty = tybase(ty->sub[0]);
assert(ty->type == Tystruct);
nl = ty->sdecls;
off = 0;
for (i = 0; i < ty->nmemb; i++) {
off = tyalign(off, size(nl[i]));
if (!strcmp(namestr(memb), declname(nl[i])))
return off;
off += size(nl[i]);
}
die("Could not find member %s in struct", namestr(memb));
return -1;
}