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87 lines
3.6 KiB
OpenEdge ABL
87 lines
3.6 KiB
OpenEdge ABL
[Inter::Pragma::] The Pragma Construct.
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Defining the pragma construct.
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@
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@e PRAGMA_IST
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=
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void Inter::Pragma::define(void) {
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inter_construct *IC = InterConstruct::create_construct(PRAGMA_IST, I"pragma");
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InterConstruct::specify_syntax(IC, I"pragma IDENTIFIER TEXT");
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InterConstruct::permit(IC, OUTSIDE_OF_PACKAGES_ICUP);
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METHOD_ADD(IC, CONSTRUCT_READ_MTID, Inter::Pragma::read);
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METHOD_ADD(IC, CONSTRUCT_TRANSPOSE_MTID, Inter::Pragma::transpose);
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METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, Inter::Pragma::verify);
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METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, Inter::Pragma::write);
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}
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@
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@d TARGET_PRAGMA_IFLD 2
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@d TEXT_PRAGMA_IFLD 3
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@d EXTENT_PRAGMA_IFR 4
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=
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void Inter::Pragma::read(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
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*E = InterConstruct::vet_level(IBM, PRAGMA_IST, ilp->indent_level, eloc);
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if (*E) return;
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if (SymbolAnnotation::nonempty(&(ilp->set))) { *E = Inter::Errors::plain(I"__annotations are not allowed", eloc); return; }
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inter_symbol *target_name = InterSymbolsTable::symbol_from_name(InterBookmark::scope(IBM), ilp->mr.exp[0]);
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if (target_name == NULL)
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target_name = Inter::Textual::new_symbol(eloc, InterBookmark::scope(IBM), ilp->mr.exp[0], E);
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if (*E) return;
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text_stream *S = ilp->mr.exp[1];
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inter_ti ID = InterWarehouse::create_text(InterBookmark::warehouse(IBM), InterBookmark::package(IBM));
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int literal_mode = FALSE;
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LOOP_THROUGH_TEXT(pos, S) {
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int c = (int) Str::get(pos);
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if (literal_mode == FALSE) {
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if (c == '\\') { literal_mode = TRUE; continue; }
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} else {
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switch (c) {
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case '\\': break;
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case '"': break;
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case 't': c = 9; break;
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case 'n': c = 10; break;
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default: { *E = Inter::Errors::plain(I"no such backslash escape", eloc); return; }
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}
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}
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if (Inter::Constant::char_acceptable(c) == FALSE) { *E = Inter::Errors::quoted(I"bad character in text", S, eloc); return; }
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PUT_TO(InterWarehouse::get_text(InterBookmark::warehouse(IBM), ID), c);
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literal_mode = FALSE;
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}
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*E = Inter::Pragma::new(IBM, target_name, ID, (inter_ti) ilp->indent_level, eloc);
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}
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inter_error_message *Inter::Pragma::new(inter_bookmark *IBM, inter_symbol *target_name, inter_ti pragma_text, inter_ti level, struct inter_error_location *eloc) {
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inter_tree_node *P = Inode::new_with_2_data_fields(IBM, PRAGMA_IST, InterSymbolsTable::id_from_symbol_at_bookmark(IBM, target_name), pragma_text, eloc, 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::Pragma::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[TEXT_PRAGMA_IFLD] = grid[P->W.instruction[TEXT_PRAGMA_IFLD]];
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}
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void Inter::Pragma::verify(inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E) {
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if (P->W.extent != EXTENT_PRAGMA_IFR) { *E = Inode::error(P, I"extent wrong", NULL); return; }
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inter_symbol *target_name = InterSymbolsTable::symbol_from_ID_at_node(P, TARGET_PRAGMA_IFLD);
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if (target_name == NULL) { *E = Inode::error(P, I"no target name", NULL); return; }
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if (P->W.instruction[TEXT_PRAGMA_IFLD] == 0) { *E = Inode::error(P, I"no pragma text", NULL); return; }
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}
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void Inter::Pragma::write(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P, inter_error_message **E) {
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inter_symbol *target_name = InterSymbolsTable::symbol_from_ID_at_node(P, TARGET_PRAGMA_IFLD);
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inter_ti ID = P->W.instruction[TEXT_PRAGMA_IFLD];
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text_stream *S = Inode::ID_to_text(P, ID);
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WRITE("pragma %S \"%S\"", target_name->symbol_name, S);
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}
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