/**
request : 'db -> sql:string -> 'result
<doc>Executes the SQL request and returns its result</doc>
**/
HL_PRIM sqlite_result *HL_NAME(request)(sqlite_database *db, vbyte *sql ) {
sqlite_result *r;
const char *tl;
int i,j;
r = (sqlite_result*)hl_gc_alloc_finalizer(sizeof(sqlite_result));
r->finalize = HL_NAME(finalize_result);
r->db = db;
if( sqlite3_prepare16_v2(db->db, sql, -1, &r->r, &tl) != SQLITE_OK ) {
HL_NAME(error)(db->db, false);
}
if( *tl ) {
sqlite3_finalize(r->r);
hl_error("SQLite error: Cannot execute several SQL requests at the same time");
}
r->ncols = sqlite3_column_count(r->r);
r->names = (int*)hl_gc_alloc(sizeof(int)*r->ncols);
r->bools = (int*)hl_gc_alloc(sizeof(int)*r->ncols);
r->first = 1;
r->done = 0;
for(i=0;i<r->ncols;i++) {
int id = hl_hash_gen((uchar*)sqlite3_column_name16(r->r,i), true);
const char *dtype = sqlite3_column_decltype(r->r,i);
for(j=0;j<i;j++)
if( r->names[j] == id ) {
if( strcmp(sqlite3_column_name16(r->r,i), sqlite3_column_name16(r->r,j)) == 0 ) {
sqlite3_finalize(r->r);
hl_buffer *b = hl_alloc_buffer();
hl_buffer_str(b, USTR("SQLite error: Same field is two times in the request: "));
hl_buffer_str(b, (uchar*)sql);
hl_error_msg(hl_buffer_content(b, NULL));
} else {
hl_buffer *b = hl_alloc_buffer();
hl_buffer_str(b, USTR("SQLite error: Same field ids for: "));
hl_buffer_str(b, sqlite3_column_name16(r->r,i));
hl_buffer_str(b, USTR(" and "));
hl_buffer_str(b, sqlite3_column_name16(r->r,j));
sqlite3_finalize(r->r);
hl_error_msg(hl_buffer_content(b, NULL));
}
}
r->names[i] = id;
r->bools[i] = dtype?(strcmp(dtype,"BOOL") == 0):0;
}
// changes in an update/delete
if( db->last != NULL )
HL_NAME(finalize_request)(db->last, false);
db->last = r;
return db->last;
}
static void hl_read_type( hl_reader *r, hl_type *t ) {
t->kind = READ();
switch( (int)t->kind ) {
case HFUN:
case HMETHOD:
{
int i;
int nargs = READ();
t->fun = (hl_type_fun*)hl_zalloc(&r->code->alloc,sizeof(hl_type_fun));
t->fun->nargs = nargs;
t->fun->args = (hl_type**)hl_malloc(&r->code->alloc,sizeof(hl_type*)*nargs);
for(i=0;i<nargs;i++)
t->fun->args[i] = hl_get_type(r);
t->fun->ret = hl_get_type(r);
}
break;
case HOBJ:
{
int i;
const uchar *name = hl_read_ustring(r);
int super = INDEX();
int global = UINDEX();
int nfields = UINDEX();
int nproto = UINDEX();
int nbindings = UINDEX();
t->obj = (hl_type_obj*)hl_malloc(&r->code->alloc,sizeof(hl_type_obj));
t->obj->name = name;
t->obj->super = super < 0 ? NULL : r->code->types + super;
t->obj->global_value = (void**)(int_val)global;
t->obj->nfields = nfields;
t->obj->nproto = nproto;
t->obj->nbindings = nbindings;
t->obj->fields = (hl_obj_field*)hl_malloc(&r->code->alloc,sizeof(hl_obj_field)*nfields);
t->obj->proto = (hl_obj_proto*)hl_malloc(&r->code->alloc,sizeof(hl_obj_proto)*nproto);
t->obj->bindings = (int*)hl_malloc(&r->code->alloc,sizeof(int)*nbindings*2);
t->obj->rt = NULL;
for(i=0;i<nfields;i++) {
hl_obj_field *f = t->obj->fields + i;
f->name = hl_read_ustring(r);
f->hashed_name = hl_hash_gen(f->name,true);
f->t = hl_get_type(r);
}
for(i=0;i<nproto;i++) {
hl_obj_proto *p = t->obj->proto + i;
p->name = hl_read_ustring(r);
p->hashed_name = hl_hash_gen(p->name,true);
p->findex = UINDEX();
p->pindex = INDEX();
}
for(i=0;i<nbindings;i++) {
t->obj->bindings[i<<1] = UINDEX();
t->obj->bindings[(i<<1)|1] = UINDEX();
}
}
break;
case HREF:
t->tparam = hl_get_type(r);
break;
case HVIRTUAL:
{
int i;
int nfields = UINDEX();
t->virt = (hl_type_virtual*)hl_malloc(&r->code->alloc,sizeof(hl_type_virtual));
t->virt->nfields = nfields;
t->virt->fields = (hl_obj_field*)hl_malloc(&r->code->alloc,sizeof(hl_obj_field)*nfields);
for(i=0;i<nfields;i++) {
hl_obj_field *f = t->virt->fields + i;
f->name = hl_read_ustring(r);
f->hashed_name = hl_hash_gen(f->name,true);
f->t = hl_get_type(r);
}
}
break;
case HABSTRACT:
t->abs_name = hl_read_ustring(r);
break;
case HENUM:
{
int i,j;
t->tenum = hl_malloc(&r->code->alloc,sizeof(hl_type_enum));
t->tenum->name = hl_read_ustring(r);
t->tenum->global_value = (void**)(int_val)UINDEX();
t->tenum->nconstructs = READ();
t->tenum->constructs = (hl_enum_construct*)hl_malloc(&r->code->alloc, sizeof(hl_enum_construct)*t->tenum->nconstructs);
for(i=0;i<t->tenum->nconstructs;i++) {
hl_enum_construct *c = t->tenum->constructs + i;
c->name = hl_read_ustring(r);
c->nparams = UINDEX();
c->params = (hl_type**)hl_malloc(&r->code->alloc,sizeof(hl_type*)*c->nparams);
c->offsets = (int*)hl_malloc(&r->code->alloc,sizeof(int)*c->nparams);
for(j=0;j<c->nparams;j++)
c->params[j] = hl_get_type(r);
}
}
break;
case HNULL:
t->tparam = hl_get_type(r);
break;
default:
if( t->kind >= HLAST ) ERROR("Invalid type");
break;
}
}
HL_PRIM int hl_hash( vbyte *b ) {
return hl_hash_gen((uchar*)b,true);
}
