1
0
Fork 0
mirror of https://github.com/ganelson/inform.git synced 2024-07-08 18:14:21 +03:00
inform7/inter/inter-module/Chapter 4/The DefaultValue Construct.w
2019-07-12 11:33:52 +01:00

66 lines
2.5 KiB
OpenEdge ABL

[Inter::DefaultValue::] The DefaultValue Construct.
Defining the defaultvalue construct.
@
@e DEFAULTVALUE_IST
=
void Inter::DefaultValue::define(void) {
inter_construct *IC = Inter::Defn::create_construct(
DEFAULTVALUE_IST,
L"defaultvalue (%i+) = (%c+)",
I"defaultvalue", I"defaultvalues");
METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::DefaultValue::read);
METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::DefaultValue::verify);
METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::DefaultValue::write);
}
@
@d KIND_DEF_IFLD 2
@d VAL1_DEF_IFLD 3
@d VAL2_DEF_IFLD 4
@d EXTENT_DEF_IFR 5
=
void Inter::DefaultValue::read(inter_construct *IC, inter_reading_state *IRS, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
*E = Inter::Defn::vet_level(IRS, DEFAULTVALUE_IST, ilp->indent_level, eloc);
if (*E) return;
inter_symbol *con_kind = Inter::Textual::find_symbol(IRS->read_into, eloc, Inter::Bookmarks::scope(IRS), ilp->mr.exp[0], KIND_IST, E);
if (*E) return;
inter_t con_val1 = 0;
inter_t con_val2 = 0;
*E = Inter::Types::read(ilp->line, eloc, IRS->read_into, IRS->current_package, con_kind, ilp->mr.exp[1], &con_val1, &con_val2, Inter::Bookmarks::scope(IRS));
if (*E) return;
*E = Inter::DefaultValue::new(IRS, Inter::SymbolsTables::id_from_IRS_and_symbol(IRS, con_kind), con_val1, con_val2, (inter_t) ilp->indent_level, eloc);
}
inter_error_message *Inter::DefaultValue::new(inter_reading_state *IRS, inter_t KID, inter_t val1, inter_t val2, inter_t level, inter_error_location *eloc) {
inter_frame P = Inter::Frame::fill_3(IRS, DEFAULTVALUE_IST, KID, val1, val2, eloc, level);
inter_error_message *E = Inter::Defn::verify_construct(IRS->current_package, P); if (E) return E;
Inter::Frame::insert(P, IRS);
return NULL;
}
void Inter::DefaultValue::verify(inter_construct *IC, inter_frame P, inter_package *owner, inter_error_message **E) {
if (P.extent != EXTENT_DEF_IFR) *E = Inter::Frame::error(&P, I"extent wrong", NULL);
else *E = Inter::Verify::symbol(owner, P, P.data[KIND_DEF_IFLD], KIND_IST);
}
void Inter::DefaultValue::write(inter_construct *IC, OUTPUT_STREAM, inter_frame P, inter_error_message **E) {
inter_symbol *con_kind = Inter::SymbolsTables::symbol_from_frame_data(P, KIND_DEF_IFLD);
if (con_kind) {
WRITE("defaultvalue %S = ", con_kind->symbol_name);
Inter::Types::write(OUT, P.repo_segment->owning_repo, con_kind,
P.data[VAL1_DEF_IFLD], P.data[VAL1_DEF_IFLD+1], Inter::Packages::scope_of(P), FALSE);
} else {
*E = Inter::Frame::error(&P, I"defaultvalue can't be written", NULL);
}
}