move src to ortools; simplified python generation; remove some namespaces in the ortools/base helper files

ortools/linear_solver/glop_utils.cc

@@ -0,0 +1,116 @@
+// Copyright 2010-2014 Google
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "ortools/linear_solver/glop_utils.h"
+
+namespace operations_research {
+
+MPSolver::ResultStatus GlopToMPSolverResultStatus(glop::ProblemStatus s) {
+  switch (s) {
+    case glop::ProblemStatus::OPTIMAL:
+      return MPSolver::OPTIMAL;
+    case glop::ProblemStatus::PRIMAL_FEASIBLE:
+      return MPSolver::FEASIBLE;
+    case glop::ProblemStatus::PRIMAL_INFEASIBLE:  // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::DUAL_UNBOUNDED:
+      return MPSolver::INFEASIBLE;
+    case glop::ProblemStatus::PRIMAL_UNBOUNDED:
+      return MPSolver::UNBOUNDED;
+    case glop::ProblemStatus::DUAL_FEASIBLE:  // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::INIT:
+      return MPSolver::NOT_SOLVED;
+    // TODO(user): Glop may return ProblemStatus::DUAL_INFEASIBLE or
+    // ProblemStatus::INFEASIBLE_OR_UNBOUNDED.
+    // Unfortunatley, the wrapper does not support this return status at this
+    // point (even though Cplex and Gurobi have the equivalent). So we convert
+    // it to MPSolver::ABNORMAL instead.
+    case glop::ProblemStatus::DUAL_INFEASIBLE:          // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::INFEASIBLE_OR_UNBOUNDED:  // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::ABNORMAL:                 // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::IMPRECISE:                // PASS_THROUGH_INTENDED
+    case glop::ProblemStatus::INVALID_PROBLEM:
+      return MPSolver::ABNORMAL;
+  }
+  LOG(DFATAL) << "Invalid glop::ProblemStatus " << s;
+  return MPSolver::ABNORMAL;
+}
+
+MPSolver::BasisStatus GlopToMPSolverVariableStatus(glop::VariableStatus s) {
+  switch (s) {
+    case glop::VariableStatus::FREE:
+      return MPSolver::FREE;
+    case glop::VariableStatus::AT_LOWER_BOUND:
+      return MPSolver::AT_LOWER_BOUND;
+    case glop::VariableStatus::AT_UPPER_BOUND:
+      return MPSolver::AT_UPPER_BOUND;
+    case glop::VariableStatus::FIXED_VALUE:
+      return MPSolver::FIXED_VALUE;
+    case glop::VariableStatus::BASIC:
+      return MPSolver::BASIC;
+  }
+  LOG(DFATAL) << "Unknown variable status: " << s;
+  return MPSolver::FREE;
+}
+
+glop::VariableStatus MPSolverToGlopVariableStatus(MPSolver::BasisStatus s) {
+  switch (s) {
+    case MPSolver::FREE:
+      return glop::VariableStatus::FREE;
+    case MPSolver::AT_LOWER_BOUND:
+      return glop::VariableStatus::AT_LOWER_BOUND;
+    case MPSolver::AT_UPPER_BOUND:
+      return glop::VariableStatus::AT_UPPER_BOUND;
+    case MPSolver::FIXED_VALUE:
+      return glop::VariableStatus::FIXED_VALUE;
+    case MPSolver::BASIC:
+      return glop::VariableStatus::BASIC;
+  }
+  LOG(DFATAL) << "Unknown variable status: " << s;
+  return glop::VariableStatus::FREE;
+}
+
+MPSolver::BasisStatus GlopToMPSolverConstraintStatus(glop::ConstraintStatus s) {
+  switch (s) {
+    case glop::ConstraintStatus::FREE:
+      return MPSolver::FREE;
+    case glop::ConstraintStatus::AT_LOWER_BOUND:
+      return MPSolver::AT_LOWER_BOUND;
+    case glop::ConstraintStatus::AT_UPPER_BOUND:
+      return MPSolver::AT_UPPER_BOUND;
+    case glop::ConstraintStatus::FIXED_VALUE:
+      return MPSolver::FIXED_VALUE;
+    case glop::ConstraintStatus::BASIC:
+      return MPSolver::BASIC;
+  }
+  LOG(DFATAL) << "Unknown constraint status: " << s;
+  return MPSolver::FREE;
+}
+
+glop::ConstraintStatus MPSolverToGlopConstraintStatus(MPSolver::BasisStatus s) {
+  switch (s) {
+    case MPSolver::FREE:
+      return glop::ConstraintStatus::FREE;
+    case MPSolver::AT_LOWER_BOUND:
+      return glop::ConstraintStatus::AT_LOWER_BOUND;
+    case MPSolver::AT_UPPER_BOUND:
+      return glop::ConstraintStatus::AT_UPPER_BOUND;
+    case MPSolver::FIXED_VALUE:
+      return glop::ConstraintStatus::FIXED_VALUE;
+    case MPSolver::BASIC:
+      return glop::ConstraintStatus::BASIC;
+  }
+  LOG(DFATAL) << "Unknown constraint status: " << s;
+  return glop::ConstraintStatus::FREE;
+}
+
+}  // namespace operations_research