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89 lines
4.1 KiB
OpenEdge ABL
89 lines
4.1 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 = InterConstruct::create_construct(VAL_IST, I"val");
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InterConstruct::specify_syntax(IC, I"val IDENTIFIER 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::Val::read);
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METHOD_ADD(IC, CONSTRUCT_TRANSPOSE_MTID, Inter::Val::transpose);
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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_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::vet_level(IBM, VAL_IST, ilp->indent_level, eloc);
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if (*E) return;
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inter_package *routine = InterConstruct::get_latest_block_package();
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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 = 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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inter_symbol *val_kind = Inter::Textual::find_symbol(InterBookmark::tree(IBM), eloc, InterBookmark::scope(IBM), ilp->mr.exp[0], KIND_IST, E);
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if (*E) return;
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inter_ti val1 = 0;
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inter_ti val2 = 0;
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inter_symbol *kind_as_value = Inter::Textual::find_symbol(InterBookmark::tree(IBM), eloc, InterBookmark::scope(IBM), 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::Types::symbol_to_pair(InterBookmark::tree(IBM), InterBookmark::package(IBM), kind_as_value, &val1, &val2);
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} else {
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*E = Inter::Types::read(ilp->line, eloc, InterBookmark::tree(IBM), InterBookmark::package(IBM), 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(IBM, val_kind, ilp->indent_level, val1, val2, eloc);
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}
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inter_error_message *Inter::Val::new(inter_bookmark *IBM, inter_symbol *val_kind, int level, inter_ti val1, inter_ti val2, inter_error_location *eloc) {
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inter_tree_node *P = Inode::new_with_4_data_fields(IBM, VAL_IST, 0, InterSymbolsTable::id_from_symbol_at_bookmark(IBM, val_kind), 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::Val::transpose(inter_construct *IC, inter_tree_node *P, inter_ti *grid, inter_ti grid_extent, inter_error_message **E) {
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P->W.instruction[VAL2_VAL_IFLD] = Inter::Types::transpose_value(P->W.instruction[VAL1_VAL_IFLD], P->W.instruction[VAL2_VAL_IFLD], grid, grid_extent, E);
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}
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void Inter::Val::verify(inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E) {
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if (P->W.extent != EXTENT_VAL_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"function has no symbols table", NULL); return; }
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*E = Inter::Verify::symbol(owner, P, P->W.instruction[KIND_VAL_IFLD], KIND_IST); if (*E) return;
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inter_symbol *val_kind = InterSymbolsTable::symbol_from_ID(InterPackage::scope(owner), P->W.instruction[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_tree_node *P, inter_error_message **E) {
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inter_symbols_table *locals = InterPackage::scope_of(P);
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if (locals == NULL) { *E = Inode::error(P, I"function has no symbols table", NULL); return; }
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inter_symbol *val_kind = InterSymbolsTable::symbol_from_ID_at_node(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, val_kind, P->W.instruction[VAL1_VAL_IFLD], P->W.instruction[VAL2_VAL_IFLD], locals, FALSE);
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} else { *E = Inode::error(P, I"cannot write val", NULL); return; }
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}
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