Defining the packagetype construct.

• §1. Definition
• §2. Instructions
• §3. Creating from textual Inter syntax
• §4. Writing to textual Inter syntax

§1. Definition. For what this does and why it is used, see Textual Inter (in inter).

void PackageTypeInstruction::define_construct?Usage of PackageTypeInstruction::define_construct:
Inter Constructs - §15(void) {
    inter_construct *IC = InterInstruction::create_construct(PACKAGETYPE_IST, I"packagetype");
    InterInstruction::defines_symbol_in_fields(IC, DEFN_PTYPE_IFLD, -1);
    InterInstruction::specify_syntax(IC, I"packagetype _IDENTIFIER");
    InterInstruction::data_extent_always(IC, 1);
    METHOD_ADD(IC, CONSTRUCT_READ_MTID, PackageTypeInstruction::read);
    METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, PackageTypeInstruction::write);
    InterInstruction::permit(IC, OUTSIDE_OF_PACKAGES_ICUP);
}

§2. Instructions. In bytecode, the frame of a packagetype instruction is laid out with the compulsory words — see Inter Nodes — followed by:

define DEFN_PTYPE_IFLD (DATA_IFLD + 0)

inter_error_message *PackageTypeInstruction::new?Usage of PackageTypeInstruction::new:
§3(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,
        /* DEFN_PTYPE_IFLD: */ InterSymbolsTable::id_at_bookmark(IBM, ptype),
        eloc, level);
    inter_error_message *E = VerifyingInter::instruction(InterBookmark::package(IBM), P);
    if (E) return E;
    NodePlacement::move_to_moving_bookmark(P, IBM);
    return NULL;
}

§3. Creating from textual Inter syntax.

void PackageTypeInstruction::read?Usage of PackageTypeInstruction::read:
§1(inter_construct *IC, inter_bookmark *IBM,
    inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
    inter_symbol *ptype_name =
        TextualInter::new_symbol(eloc, InterBookmark::scope(IBM), ilp->mr.exp[0], E);
    if (*E) return;

    *E = PackageTypeInstruction::new(IBM, ptype_name, (inter_ti) ilp->indent_level, eloc);
}

§4. Writing to textual Inter syntax.

void PackageTypeInstruction::write?Usage of PackageTypeInstruction::write:
§1(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P) {
    inter_symbol *ptype_name = InterSymbolsTable::symbol_from_ID_at_node(P, DEFN_PTYPE_IFLD);
    WRITE("packagetype %S", InterSymbol::identifier(ptype_name));
}