feat(result-contract-completion): step 1 — complete-result-contract

src/fesa/results/result_database.cpp

@@ -43,6 +43,12 @@ void validate_nodal_frame(
             "Nodal IDs, displacement, and reaction fields must have "
             "matching sizes.");
     }
+    if (nodal.origins.size() != nodal.node_ids.size()) {
+        add_error(
+            diagnostics,
+            "results.nodal_origin_size_mismatch",
+            "Nodal IDs and origins must have matching sizes.");
+    }
 
     std::set<std::int64_t> node_ids;
     for (const NodeId node_id : nodal.node_ids) {
@@ -74,6 +80,84 @@ void validate_nodal_frame(
     }
 }
 
+void validate_beam_section_result(
+    const BeamSectionResult& result,
+    std::vector<Diagnostic>& diagnostics) {
+    if (
+        !std::isfinite(result.xi) ||
+        !is_finite(result.section_strain) ||
+        !is_finite(result.section_force) ||
+        !std::isfinite(result.centroid_sigma_xx) ||
+        !std::ranges::all_of(
+            result.sigma_xx,
+            [](const double value) { return std::isfinite(value); })) {
+        add_error(
+            diagnostics,
+            "results.nonfinite_value",
+            "Beam section result contains a nonfinite value.");
+    }
+}
+
+void validate_element_frame(
+    const ElementFrame& element,
+    const NodalFrame& nodal,
+    std::vector<Diagnostic>& diagnostics) {
+    std::set<std::int64_t> nodal_ids;
+    for (const NodeId node_id : nodal.node_ids) {
+        nodal_ids.insert(node_id.value());
+    }
+
+    std::set<std::int64_t> element_ids;
+    for (const BeamElementFrame& beam : element.beams) {
+        if (!element_ids.insert(beam.element.value()).second) {
+            add_error(
+                diagnostics,
+                "results.duplicate_element_id",
+                "Element frame contains duplicate element ID " +
+                    std::to_string(beam.element.value()) + ".");
+        }
+
+        if (
+            !is_finite(beam.local_frame.ex) ||
+            !is_finite(beam.local_frame.ey) ||
+            !is_finite(beam.local_frame.ez)) {
+            add_error(
+                diagnostics,
+                "results.nonfinite_value",
+                "Beam local frame contains a nonfinite component.");
+        }
+
+        const BeamSectionResult& first = beam.end_results[0];
+        const BeamSectionResult& second = beam.end_results[1];
+        if (first.end_node == second.end_node) {
+            add_error(
+                diagnostics,
+                "results.duplicate_beam_end_node",
+                "Beam element result contains the same node at both ends.");
+        }
+        if (
+            first.xi != -1.0 || second.xi != 1.0 ||
+            !nodal_ids.contains(first.end_node.value()) ||
+            !nodal_ids.contains(second.end_node.value())) {
+            add_error(
+                diagnostics,
+                "results.invalid_beam_connectivity",
+                "Beam end results must follow (-1, +1) connectivity and "
+                "reference nodes in the nodal frame.");
+        }
+        if (first.sigma_xx.size() != second.sigma_xx.size()) {
+            add_error(
+                diagnostics,
+                "results.recovery_point_count_mismatch",
+                "Beam end results must have matching recovery-point "
+                "counts.");
+        }
+
+        validate_beam_section_result(first, diagnostics);
+        validate_beam_section_result(second, diagnostics);
+    }
+}
+
 }  // namespace
 
 Status validate_result_database(const ResultDatabase& database) {
@@ -106,6 +190,8 @@ Status validate_result_database(const ResultDatabase& database) {
             }
 
             validate_nodal_frame(frame.nodal, diagnostics);
+            validate_element_frame(
+                frame.element, frame.nodal, diagnostics);
         }
     }