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48 lines
1.6 KiB
OpenEdge ABL
48 lines
1.6 KiB
OpenEdge ABL
[CodeGen::Externals::] Resolve External Symbols.
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To make sure certain symbol names translate into globally unique target symbols.
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@h Pipeline stage.
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=
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void CodeGen::Externals::create_pipeline_stage(void) {
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CodeGen::Stage::new(I"resolve-external-symbols", CodeGen::Externals::run_pipeline_stage, NO_STAGE_ARG, FALSE);
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}
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int CodeGen::Externals::run_pipeline_stage(pipeline_step *step) {
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Inter::Connectors::stecker(step->repository);
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int resolution_failed = FALSE;
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Inter::Tree::traverse(step->repository, CodeGen::Externals::visitor, &resolution_failed, NULL, PACKAGE_IST);
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if (resolution_failed) internal_error("undefined external link(s)");
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return TRUE;
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}
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void CodeGen::Externals::visitor(inter_tree *I, inter_tree_node *P, void *state) {
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int *fail_flag = (int *) state;
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inter_package *Q = Inter::Package::defined_by_frame(P);
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if (Site::connectors_package(I) == Q) return;
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inter_symbols_table *ST = Inter::Packages::scope(Q);
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for (int i=0; i<ST->size; i++) {
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inter_symbol *S = ST->symbol_array[i];
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if ((S) && (S->equated_to)) {
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inter_symbol *D = S;
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while ((D) && (D->equated_to)) D = D->equated_to;
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S->equated_to = D;
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if (!Inter::Symbols::is_defined(D)) {
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inter_symbol *socket = Inter::Connectors::find_socket(I, D->symbol_name);
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if (socket) {
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D = socket->equated_to;
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S->equated_to = D;
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}
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}
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if (!Inter::Symbols::is_defined(D)) {
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if (Inter::Symbols::get_scope(D) != PLUG_ISYMS) {
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LOG("$3 == $3 which is undefined\n", S, D);
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WRITE_TO(STDERR, "Failed to resolve symbol: %S\n", D->symbol_name);
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if (fail_flag) *fail_flag = TRUE;
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}
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}
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}
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}
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}
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