Defining the packagetype construct.

§1.

enum PACKAGETYPE_IST

void Inter::PackageType::define?Usage of Inter::PackageType::define:
Definition - §3(void) {
    inter_construct *IC = Inter::Defn::create_construct(
        PACKAGETYPE_IST,
        L"packagetype (_%i+)",
        I"packagetype", I"packagetypes");
    METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::PackageType::read);
    METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::PackageType::verify);
    METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::PackageType::write);
    IC->usage_permissions = OUTSIDE_OF_PACKAGES;
}

§2.

define DEFN_PTYPE_IFLD 2
define EXTENT_PTYPE_IFR 3

void Inter::PackageType::read?Usage of Inter::PackageType::read:
§1(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
    *E = Inter::Defn::vet_level(IBM, PACKAGETYPE_IST, ilp->indent_level, eloc);
    if (*E) return;

    if (SymbolAnnotation::nonempty(&(ilp->set))) { *E = Inter::Errors::plain(I"__annotations are not allowed", eloc); return; }

    inter_symbol *ptype_name = Inter::Textual::new_symbol(eloc, InterBookmark::scope(IBM), ilp->mr.exp[0], E);
    if (*E) return;

    *E = Inter::PackageType::new_packagetype(IBM, ptype_name, (inter_ti) ilp->indent_level, eloc);
}

inter_error_message *Inter::PackageType::new_packagetype(inter_bookmark *IBM, inter_symbol *ptype, inter_ti level, inter_error_location *eloc) {
    inter_tree_node *P = Inode::new_with_1_data_field(IBM, PACKAGETYPE_IST, InterSymbolsTable::id_from_symbol_at_bookmark(IBM, ptype), eloc, level);
    inter_error_message *E = Inter::Defn::verify_construct(InterBookmark::package(IBM), P);
    if (E) return E;
    NodePlacement::move_to_moving_bookmark(P, IBM);
    return NULL;
}

void Inter::PackageType::verify?Usage of Inter::PackageType::verify:
§1(inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E) {
    if (P->W.extent < EXTENT_PTYPE_IFR) { *E = Inode::error(P, I"package extent wrong", NULL); return; }
    *E = Inter::Verify::defn(owner, P, DEFN_PTYPE_IFLD);
}

void Inter::PackageType::write?Usage of Inter::PackageType::write:
§1(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P, inter_error_message **E) {
    inter_symbol *ptype_name = InterSymbolsTable::symbol_from_ID_at_node(P, DEFN_PTYPE_IFLD);
    if (ptype_name) WRITE("packagetype %S", ptype_name->symbol_name);
    else { *E = Inode::error(P, I"cannot write packagetype", NULL); return; }
}