Add structure comparator structcmp()

include/core/state_block/state_composite.h

@@ -25,6 +25,9 @@ typedef std::string StateStructure;
 typedef std::unordered_map < char, StateBlockPtr   > StateBlockMap;
 typedef StateBlockMap::const_iterator StateBlockMapCIter;
 
+bool structcmp(const StateStructure& s1, const StateStructure& s2);
+
+
 class VectorComposite : public std::unordered_map < char, Eigen::VectorXd >
 {
     public:

src/state_block/state_composite.cpp

@@ -6,6 +6,22 @@
 
 namespace wolf{
 
+////// STATE STRUCTURE //////////
+
+bool structcmp(const StateStructure& s1, const StateStructure& s2)
+{
+    if (s1.size() != s2.size()) return false;
+
+    std::set<char> s1_chars, s2_chars;
+
+    for (const auto &c : s1)
+        s1_chars.emplace(c);
+    for (const auto &c : s2)
+        s2_chars.emplace(c);
+
+    return s1_chars == s2_chars;
+}
+
 ////// VECTOR COMPOSITE //////////
 
 VectorComposite::VectorComposite(const StateStructure& _structure, const std::list<int>& _sizes)

test/gtest_state_composite.cpp

@@ -13,6 +13,19 @@
 using namespace wolf;
 using namespace std;
 
+TEST(StateStructure, operator_equal)
+{
+    StateStructure POV("POV"), PVO("PVO"), PO("PO"), POVW("POVW");
+
+    ASSERT_TRUE ( structcmp(POV  , PVO ) );
+    ASSERT_FALSE( structcmp(POV  , PO  ) );
+    ASSERT_FALSE( structcmp(PO   , POV ) );
+    ASSERT_FALSE( structcmp(PO   , POVW) );
+    ASSERT_FALSE( structcmp(POVW , PO  ) );
+
+    ASSERT_TRUE ( structcmp(POVW , "PVOW" ) );
+    ASSERT_TRUE ( structcmp(POVW , "WPOV" ) );
+}
 
 class StateBlockCompositeInit : public testing::Test
 {