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96 lines
3.7 KiB
OpenEdge ABL
96 lines
3.7 KiB
OpenEdge ABL
[Inter::Ref::] The Ref Construct.
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Defining the ref construct.
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@
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@e REF_IST
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=
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void Inter::Ref::define(void) {
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inter_construct *IC = InterConstruct::create_construct(REF_IST, I"ref");
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InterConstruct::specify_syntax(IC, I"ref TOKENS");
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InterConstruct::allow_in_depth_range(IC, 1, INFINITELY_DEEP);
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InterConstruct::permit(IC, INSIDE_CODE_PACKAGE_ICUP);
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METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::Ref::read);
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METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::Ref::verify);
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METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::Ref::write);
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}
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@
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@d BLOCK_REF_IFLD 2
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@d KIND_REF_IFLD 3
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@d VAL1_REF_IFLD 4
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@d VAL2_REF_IFLD 5
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@d EXTENT_REF_IFR 6
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=
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void Inter::Ref::read(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
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if (SymbolAnnotation::nonempty(&(ilp->set))) { *E = Inter::Errors::plain(I"__annotations are not allowed", eloc); return; }
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*E = InterConstruct::check_level_in_package(IBM, REF_IST, ilp->indent_level, eloc);
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if (*E) return;
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inter_package *routine = InterBookmark::package(IBM);
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if (routine == NULL) { *E = Inter::Errors::plain(I"'ref' used outside function", eloc); return; }
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inter_symbols_table *locals = InterPackage::scope(routine);
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if (locals == NULL) { *E = Inter::Errors::plain(I"function has no symbols table", eloc); return; }
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text_stream *kind_text = NULL, *value_text = ilp->mr.exp[0];
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match_results mr2 = Regexp::create_mr();
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if (Regexp::match(&mr2, value_text, L"%((%c+)%) (%c+)")) {
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kind_text = mr2.exp[0];
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value_text = mr2.exp[1];
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}
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inter_symbol *ref_kind = NULL;
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if (kind_text) {
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ref_kind = TextualInter::find_symbol(IBM, eloc, kind_text, KIND_IST, E);
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if (*E) return;
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}
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inter_ti var_val1 = 0;
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inter_ti var_val2 = 0;
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*E = Inter::Types::read(ilp->line, eloc, IBM, ref_kind, value_text, &var_val1, &var_val2, locals);
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if (*E) return;
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*E = Inter::Ref::new(IBM, ref_kind, ilp->indent_level, var_val1, var_val2, eloc);
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}
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inter_error_message *Inter::Ref::new(inter_bookmark *IBM, inter_symbol *ref_kind, int level, inter_ti val1, inter_ti val2, inter_error_location *eloc) {
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inter_ti KID = 0;
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if (ref_kind) KID = InterSymbolsTable::id_from_symbol_at_bookmark(IBM, ref_kind);
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inter_tree_node *P = Inode::new_with_4_data_fields(IBM, REF_IST, 0, KID, val1, val2, eloc, (inter_ti) level);
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inter_error_message *E = InterConstruct::verify_construct(InterBookmark::package(IBM), P); if (E) return E;
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NodePlacement::move_to_moving_bookmark(P, IBM);
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return NULL;
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}
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void Inter::Ref::verify(inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E) {
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if (P->W.extent != EXTENT_REF_IFR) { *E = Inode::error(P, I"extent wrong", NULL); return; }
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inter_symbols_table *locals = InterPackage::scope(owner);
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if (locals == NULL) { *E = Inode::error(P, I"no symbols table in function", NULL); return; }
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if (P->W.instruction[KIND_REF_IFLD]) {
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*E = Inter::Verify::symbol(owner, P, P->W.instruction[KIND_REF_IFLD], KIND_IST);
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if (*E) return;
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*E = Inter::Types::validate_local(P, VAL1_REF_IFLD, KIND_REF_IFLD, locals);
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if (*E) return;
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}
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}
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void Inter::Ref::write(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P, inter_error_message **E) {
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inter_package *pack = InterPackage::container(P);
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inter_symbols_table *locals = InterPackage::scope(pack);
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if (locals == NULL) { *E = Inode::error(P, I"function has no symbols table", NULL); return; }
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WRITE("ref ");
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if (P->W.instruction[KIND_REF_IFLD]) {
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inter_symbol *val_kind = InterSymbolsTable::symbol_from_ID_at_node(P, KIND_REF_IFLD);
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if (val_kind) {
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WRITE("("); TextualInter::write_symbol_from(OUT, P, KIND_REF_IFLD); WRITE(") ");
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} else { *E = Inode::error(P, I"cannot write ref", NULL); return; }
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}
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Inter::Types::write(OUT, P, P->W.instruction[VAL1_REF_IFLD], P->W.instruction[VAL2_REF_IFLD], locals, FALSE);
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}
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