mirror of
https://github.com/ganelson/inform.git
synced 2024-07-01 06:24:58 +03:00
72 lines
3 KiB
OpenEdge ABL
72 lines
3 KiB
OpenEdge ABL
[Inter::Lab::] The Lab Construct.
|
|
|
|
Defining the Lab construct.
|
|
|
|
@
|
|
|
|
@e LAB_IST
|
|
|
|
=
|
|
void Inter::Lab::define(void) {
|
|
inter_construct *IC = InterConstruct::create_construct(LAB_IST, I"lab");
|
|
InterConstruct::specify_syntax(IC, I"lab .IDENTIFIER");
|
|
InterConstruct::allow_in_depth_range(IC, 1, INFINITELY_DEEP);
|
|
InterConstruct::permit(IC, INSIDE_CODE_PACKAGE_ICUP);
|
|
METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::Lab::read);
|
|
METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::Lab::verify);
|
|
METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::Lab::write);
|
|
}
|
|
|
|
@
|
|
|
|
@d BLOCK_LAB_IFLD 2
|
|
@d LABEL_LAB_IFLD 3
|
|
|
|
@d EXTENT_LAB_IFR 4
|
|
|
|
=
|
|
void Inter::Lab::read(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
|
|
if (SymbolAnnotation::nonempty(&(ilp->set))) { *E = Inter::Errors::plain(I"__annotations are not allowed", eloc); return; }
|
|
|
|
*E = InterConstruct::check_level_in_package(IBM, LAB_IST, ilp->indent_level, eloc);
|
|
if (*E) return;
|
|
|
|
inter_package *routine = TextualInter::get_latest_block_package();
|
|
if (routine == NULL) { *E = Inter::Errors::plain(I"'lab' used outside function", eloc); return; }
|
|
inter_symbols_table *locals = InterPackage::scope(routine);
|
|
if (locals == NULL) { *E = Inter::Errors::plain(I"function has no symbols table", eloc); return; }
|
|
|
|
inter_symbol *label = InterSymbolsTable::symbol_from_name(locals, ilp->mr.exp[0]);
|
|
if (InterSymbol::is_label(label) == FALSE) { *E = Inter::Errors::plain(I"not a label", eloc); return; }
|
|
|
|
*E = Inter::Lab::new(IBM, label, (inter_ti) ilp->indent_level, eloc);
|
|
}
|
|
|
|
inter_error_message *Inter::Lab::new(inter_bookmark *IBM, inter_symbol *label, inter_ti level, inter_error_location *eloc) {
|
|
inter_tree_node *P = Inode::new_with_2_data_fields(IBM, LAB_IST, 0, InterSymbolsTable::id_from_symbol_at_bookmark(IBM, label), eloc, (inter_ti) level);
|
|
inter_error_message *E = InterConstruct::verify_construct(InterBookmark::package(IBM), P); if (E) return E;
|
|
NodePlacement::move_to_moving_bookmark(P, IBM);
|
|
return NULL;
|
|
}
|
|
|
|
void Inter::Lab::verify(inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E) {
|
|
if (P->W.extent != EXTENT_LAB_IFR) { *E = Inode::error(P, I"extent wrong", NULL); return; }
|
|
inter_symbol *label = InterSymbolsTable::symbol_from_ID_in_package(owner, P->W.instruction[LABEL_LAB_IFLD]);
|
|
if (InterSymbol::is_label(label) == FALSE) { *E = Inode::error(P, I"no such label", NULL); return; }
|
|
}
|
|
|
|
void Inter::Lab::write(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P, inter_error_message **E) {
|
|
inter_package *pack = InterPackage::container(P);
|
|
inter_symbol *label = InterSymbolsTable::symbol_from_ID_in_package(pack, P->W.instruction[LABEL_LAB_IFLD]);
|
|
if (label) {
|
|
WRITE("lab %S", label->symbol_name);
|
|
} else { *E = Inode::error(P, I"cannot write lab", NULL); return; }
|
|
}
|
|
|
|
inter_symbol *Inter::Lab::label_symbol(inter_tree_node *P) {
|
|
inter_package *pack = InterPackage::container(P);
|
|
inter_symbol *lab = InterSymbolsTable::symbol_from_ID_in_package(pack, P->W.instruction[LABEL_LAB_IFLD]);
|
|
if (lab == NULL) internal_error("bad lab");
|
|
return lab;
|
|
}
|