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54 lines
2.1 KiB
OpenEdge ABL
54 lines
2.1 KiB
OpenEdge ABL
[CodeInstruction::] The Code Construct.
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Defining the Code construct.
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@
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=
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void CodeInstruction::define_construct(void) {
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inter_construct *IC = InterInstruction::create_construct(CODE_IST, I"code");
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InterInstruction::specify_syntax(IC, I"code");
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InterInstruction::fix_instruction_length_between(IC, EXTENT_CODE_IFR, EXTENT_CODE_IFR);
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InterInstruction::allow_in_depth_range(IC, 0, INFINITELY_DEEP);
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InterInstruction::permit(IC, INSIDE_CODE_PACKAGE_ICUP);
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InterInstruction::permit(IC, CAN_HAVE_CHILDREN_ICUP);
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METHOD_ADD(IC, CONSTRUCT_READ_MTID, CodeInstruction::read);
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METHOD_ADD(IC, CONSTRUCT_WRITE_MTID, CodeInstruction::write);
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METHOD_ADD(IC, CONSTRUCT_VERIFY_CHILDREN_MTID, CodeInstruction::verify_children);
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}
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@
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@d BLOCK_CODE_IFLD 2
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@d EXTENT_CODE_IFR 3
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=
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void CodeInstruction::read(inter_construct *IC, inter_bookmark *IBM, inter_line_parse *ilp, inter_error_location *eloc, inter_error_message **E) {
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if (InterBookmark::package(IBM) == NULL) {
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*E = InterErrors::plain(I"'code' used outside package", eloc); return;
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}
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*E = CodeInstruction::new(IBM, ilp->indent_level, eloc);
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}
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inter_error_message *CodeInstruction::new(inter_bookmark *IBM, int level, inter_error_location *eloc) {
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inter_tree_node *P = Inode::new_with_1_data_field(IBM, CODE_IST, 0, eloc, (inter_ti) level);
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inter_error_message *E = VerifyingInter::instruction(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 CodeInstruction::write(inter_construct *IC, OUTPUT_STREAM, inter_tree_node *P, inter_error_message **E) {
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WRITE("code");
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}
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void CodeInstruction::verify_children(inter_construct *IC, inter_tree_node *P, inter_error_message **E) {
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LOOP_THROUGH_INTER_CHILDREN(C, P) {
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if ((C->W.instruction[0] != INV_IST) && (C->W.instruction[0] != SPLAT_IST) && (C->W.instruction[0] != EVALUATION_IST) && (C->W.instruction[0] != LABEL_IST) && (C->W.instruction[0] != VAL_IST) && (C->W.instruction[0] != COMMENT_IST) && (C->W.instruction[0] != NOP_IST)) {
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*E = Inode::error(C, I"only an inv, a val, a splat, a concatenate or a label can be below a code", NULL);
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return;
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}
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}
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}
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