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87 lines
3.6 KiB
OpenEdge ABL
87 lines
3.6 KiB
OpenEdge ABL
[Inter::Val::] The Val Construct.
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Defining the val construct.
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@
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@e VAL_IST
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=
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void Inter::Val::define(void) {
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inter_construct *IC = Inter::Defn::create_construct(
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VAL_IST,
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L"val (%i+) (%c+)",
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I"val", I"vals");
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IC->min_level = 1;
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IC->max_level = 100000000;
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IC->usage_permissions = INSIDE_CODE_PACKAGE;
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METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::Val::read);
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METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::Val::verify);
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METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::Val::write);
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}
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@
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@d BLOCK_VAL_IFLD 2
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@d KIND_VAL_IFLD 3
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@d VAL1_VAL_IFLD 4
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@d VAL2_VAL_IFLD 5
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@d EXTENT_VAL_IFR 6
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=
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void Inter::Val::read(inter_construct *IC, inter_reading_state *IRS, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
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if (ilp->no_annotations > 0) { *E = Inter::Errors::plain(I"__annotations are not allowed", eloc); return; }
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*E = Inter::Defn::vet_level(IRS, VAL_IST, ilp->indent_level, eloc);
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if (*E) return;
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inter_symbol *routine = Inter::Defn::get_latest_block_symbol();
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if (routine == NULL) { *E = Inter::Errors::plain(I"'val' used outside function", eloc); return; }
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inter_symbols_table *locals = Inter::Package::local_symbols(routine);
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if (locals == NULL) { *E = Inter::Errors::plain(I"function has no symbols table", eloc); return; }
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inter_symbol *val_kind = Inter::Textual::find_symbol(IRS->read_into, eloc, Inter::Bookmarks::scope(IRS), ilp->mr.exp[0], KIND_IST, E);
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if (*E) return;
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inter_t val1 = 0;
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inter_t val2 = 0;
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inter_symbol *kind_as_value = Inter::Textual::find_symbol(IRS->read_into, eloc, Inter::Bookmarks::scope(IRS), ilp->mr.exp[1], KIND_IST, E);
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*E = NULL;
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if (kind_as_value) {
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Inter::Symbols::to_data(IRS->read_into, IRS->current_package, kind_as_value, &val1, &val2);
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} else {
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*E = Inter::Types::read(ilp->line, eloc, IRS->read_into, IRS->current_package, val_kind, ilp->mr.exp[1], &val1, &val2, locals);
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if (*E) return;
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}
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*E = Inter::Val::new(IRS, routine, val_kind, ilp->indent_level, val1, val2, eloc);
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}
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inter_error_message *Inter::Val::new(inter_reading_state *IRS, inter_symbol *routine, inter_symbol *val_kind, int level, inter_t val1, inter_t val2, inter_error_location *eloc) {
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inter_frame P = Inter::Frame::fill_4(IRS, VAL_IST, 0, Inter::SymbolsTables::id_from_IRS_and_symbol(IRS, val_kind), val1, val2, eloc, (inter_t) level);
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inter_error_message *E = Inter::Defn::verify_construct(P); if (E) return E;
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Inter::Frame::insert(P, IRS);
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return NULL;
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}
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void Inter::Val::verify(inter_construct *IC, inter_frame P, inter_error_message **E) {
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if (P.extent != EXTENT_VAL_IFR) { *E = Inter::Frame::error(&P, I"extent wrong", NULL); return; }
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inter_symbols_table *locals = Inter::Packages::scope_of(P);
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if (locals == NULL) { *E = Inter::Frame::error(&P, I"function has no symbols table", NULL); return; }
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*E = Inter::Verify::symbol(P, P.data[KIND_VAL_IFLD], KIND_IST); if (*E) return;
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inter_symbol *val_kind = Inter::SymbolsTables::symbol_from_frame_data(P, KIND_VAL_IFLD);
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*E = Inter::Verify::local_value(P, VAL1_VAL_IFLD, val_kind, locals); if (*E) return;
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}
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void Inter::Val::write(inter_construct *IC, OUTPUT_STREAM, inter_frame P, inter_error_message **E) {
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inter_symbols_table *locals = Inter::Packages::scope_of(P);
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if (locals == NULL) { *E = Inter::Frame::error(&P, I"function has no symbols table", NULL); return; }
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inter_symbol *val_kind = Inter::SymbolsTables::symbol_from_frame_data(P, KIND_VAL_IFLD);
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if (val_kind) {
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WRITE("val %S ", val_kind->symbol_name);
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Inter::Types::write(OUT, P.repo_segment->owning_repo, val_kind, P.data[VAL1_VAL_IFLD], P.data[VAL2_VAL_IFLD], locals, FALSE);
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} else { *E = Inter::Frame::error(&P, I"cannot write val", NULL); return; }
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}
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