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119 lines
4.3 KiB
OpenEdge ABL
119 lines
4.3 KiB
OpenEdge ABL
[OrigSourceInstruction::] The OrigSource Construct.
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Defining the OrigSource construct.
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@h Definition.
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The OrigSource construct is a marker in the bytecode which indicates the
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source location that generated that bytecode.
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=
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void OrigSourceInstruction::define_construct(void) {
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inter_construct *IC = InterInstruction::create_construct(ORIGSOURCE_IST, I"origsource");
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InterInstruction::specify_syntax(IC, I"origsource TEXT NUMBER");
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InterInstruction::data_extent_always(IC, 2);
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METHOD_ADD(IC, CONSTRUCT_TRANSPOSE_MTID, OrigSourceInstruction::transpose);
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METHOD_ADD(IC, CONSTRUCT_VERIFY_MTID, OrigSourceInstruction::verify);
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METHOD_ADD(IC, CONSTRUCT_READ_MTID, OrigSourceInstruction::read);
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METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, OrigSourceInstruction::write);
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InterInstruction::allow_in_depth_range(IC, 0, INFINITELY_DEEP);
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InterInstruction::permit(IC, OUTSIDE_OF_PACKAGES_ICUP);
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InterInstruction::permit(IC, INSIDE_PLAIN_PACKAGE_ICUP);
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InterInstruction::permit(IC, INSIDE_CODE_PACKAGE_ICUP);
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}
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@h Instructions.
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In bytecode, the frame of an |origsource| instruction is laid out with the
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compulsory words -- see //Inter Nodes// -- followed by:
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@d PROVENANCEFILE_ORIGSOURCE_IFLD (DATA_IFLD + 0)
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@d PROVENANCELINE_ORIGSOURCE_IFLD (DATA_IFLD + 1)
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If |PROVENANCEFILE| is zero, the instruction means "Following bytecode is not
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from any specific source location." The line number is ignored in this case.
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=
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inter_error_message *OrigSourceInstruction::new(inter_bookmark *IBM,
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text_stream *file_name, inter_ti line_number,
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inter_error_location *eloc, inter_ti level) {
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inter_ti FID = 0;
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if (file_name) {
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inter_warehouse *warehouse = InterBookmark::warehouse(IBM);
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inter_package *pack = InterBookmark::package(IBM);
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FID = InterWarehouse::create_text(warehouse, pack);
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Str::copy(InterWarehouse::get_text(warehouse, FID), file_name);
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}
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inter_tree_node *P = Inode::new_with_2_data_fields(IBM, ORIGSOURCE_IST,
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/* PROVENANCEFILE_ORIGSOURCE_IFLD: */ FID,
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/* PROVENANCELINE_ORIGSOURCE_IFLD: */ line_number,
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eloc, level);
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inter_error_message *E = VerifyingInter::instruction(InterBookmark::package(IBM), P);
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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 OrigSourceInstruction::transpose(inter_construct *IC, inter_tree_node *P,
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inter_ti *grid, inter_ti grid_extent, inter_error_message **E) {
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P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD] = grid[P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD]];
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}
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@ Verification consists only of sanity checks.
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=
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void OrigSourceInstruction::verify(inter_construct *IC, inter_tree_node *P,
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inter_package *owner, inter_error_message **E) {
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if (!P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD]) {
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/* (0,anything) is valid */
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}
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else {
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*E = VerifyingInter::text_field(owner, P, PROVENANCEFILE_ORIGSOURCE_IFLD);
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}
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if (*E) return;
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}
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@h Creating from textual Inter syntax.
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=
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void OrigSourceInstruction::read(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp,
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inter_error_location *eloc, inter_error_message **E) {
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text_stream *fn = ilp->mr.exp[0];
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text_stream *lc = ilp->mr.exp[1];
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TEMPORARY_TEXT(file_as_text)
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*E = TextualInter::parse_literal_text(file_as_text, fn, 0, Str::len(fn), eloc);
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if (*E == NULL) {
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text_stream *temp_filename = NULL;
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if (Str::len(file_as_text) > 0) temp_filename = file_as_text;
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inter_ti line_number = 0;
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if (Str::len(lc) > 0) line_number = (inter_ti) Str::atoi(lc, 0);
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*E = OrigSourceInstruction::new(IBM, temp_filename, line_number,
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eloc, (inter_ti) ilp->indent_level);
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}
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DISCARD_TEXT(file_as_text)
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}
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@h Writing to textual Inter syntax.
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=
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void OrigSourceInstruction::write(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P) {
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if (!P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD]) {
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WRITE("origsource");
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}
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else {
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WRITE("origsource ");
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Provenance::write(OUT, OrigSourceInstruction::provenance(P));
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}
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}
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@h Access functions.
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=
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text_provenance OrigSourceInstruction::provenance(inter_tree_node *P) {
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if (P == NULL) return Provenance::nowhere();
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if (Inode::isnt(P, ORIGSOURCE_IST)) return Provenance::nowhere();
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if (!P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD])
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return Provenance::nowhere();
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return Provenance::at_file_and_line(
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Inode::ID_to_text(P, P->W.instruction[PROVENANCEFILE_ORIGSOURCE_IFLD]),
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(int) P->W.instruction[PROVENANCELINE_ORIGSOURCE_IFLD]);
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}
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