streamlining example / changing include system

example_basic.cpp

-{// change the #include in exec.cpp if you want this example to be executed!
+{// change the INSTANCE in preprocessor_compile_control.cpp if you want this example to be executed!
   // populate Graph
   // set accordingly before initializing!
   nodes.reserve(4);

example_concat_pushes.cpp

-{// change the #include in exec.cpp if you want this example to be executed!
+{// change the INSTANCE in preprocessor_compile_control.cpp if you want this example to be executed!
   // populate Graph
   // set accordingly before initializing!
   nodes.reserve(3);
@@ -9,9 +9,9 @@
   nodes.push_back(new Node(0,0));
   nodes.push_back(new Node(4,0));
 
-  edges.push_back(new Edge(nodes[2],nodes[0],Edge::MonotonousConst({1,3},{-1}),1,3,-3.5,{{2,0}}));
   edges.push_back(new Edge(nodes[0],nodes[2],Edge::MonotonousConst({0,3},{1}),0,3,-3.5));
   edges.push_back(new Edge(nodes[1],nodes[0],Edge::MonotonousConst({0,1,2,5},{2,3,7}),0,5,-3.5));
+  edges.push_back(new Edge(nodes[2],nodes[0],Edge::MonotonousConst({0,1,3},{-1,5}),0,3,-3.5,{{2,0}}));
   // target to source
   edges.push_back(new Edge(nodes[2],nodes[1],Edge::MonotonousConst({1,2},{-9}),1,2,-3.5,{{4,2.5},{-.5,2.5},{-.5,1.5/4}}));
 }

example_no_circ_existent.cpp

-{// change the #include in exec.cpp if you want this example to be executed!
+{// change the INSTANCE in preprocessor_compile_control.cpp if you want this example to be executed!
   // populate Graph
   // set accordingly before initializing!
   nodes.reserve(4);

exec.cpp

+#include "preprocessor_compile_control.h"
 #include "Graph.h"
 #include "alg.cpp"
 #include <climits>
@@ -6,7 +7,7 @@
 int main(){
 
 
-  Graph g = Graph(std::vector<Node*>(), std::vector<Edge*>(), "example");
+  Graph g = Graph(std::vector<Node*>(), std::vector<Edge*>(), INSTANCE);
   std::vector<Node*>& nodes = g.get_nodes();
   std::vector<Edge*>& edges = g.get_edges();
 
@@ -15,8 +16,10 @@ int main(){
 #endif
 
   {
-    #include "example_concat_pushes.cpp"
+    #define DOT(x,y) x.y
+    #include TOSTRING(DOT(example_concat_pushes,cpp))
   }
+
 #ifndef SUPPRESS_PROTOCOL
   std::cout << "\033[31mthe graph is given by:\033[39m"<< std::endl << std::endl;
   std::cout << g << std::endl;

preprocessor_compile_control.h

-#ifndef SUPPRESS_PROTOCOL
+#ifndef PREPROCESSOR_COMPILE_CONTROL_H
 /*
  * delete following line if a protocol should be generated
 */
-//#define SUPPRESS_PROTOCOL
+#define SUPPRESS_PROTOCOL
+
 
-#endif
 
 
 
 
 
-#ifndef CHECK_ASSERT
 /*
   delete following line if basic assertions should not be checked (for testing)
   leads to asymptotically worse runtime!
 */
 //#define CHECK_ASSERT
 
-#endif
-
 
 
 
 
-#ifndef PEDANTIC_LABELING
 /*
   delete if cost and residual capacity should not be given on edges of tikzpictures
 
@@ -31,13 +27,11 @@
 */
 //#define PEDANTIC_LABELING
 
-#endif
 
 
 
 
 
-#ifndef DRAW_IMPROVING_EDGES
 /*
   delete if tikz edges should always be drawn from get_a() to get_b()
   Otherwise it will be drawn s.t. the edge has non positive get_residual_cost
@@ -47,11 +41,22 @@
 */
 //#define DRAW_IMPROVING_EDGES
 
-#endif
 
-#ifndef ATTRIBUTION
+
+
+
+#define STRINGIFIY(x) #x
+#define TOSTRING(x) STRINGIFIY(x)
+#define CONCAT(x,y) x ## y
 /*
   Variable used to credit on slides
 */
 #define ATTRIBUTION "https://git.rwth-aachen.de/goseminarss2020/convex-cost-scaling-algorithm-visualization"
+
+/*
+  will execute initialization of INSTANCE##".cpp" (see exec.cpp)
+*/
+
+#define INSTANCE TOSTRING(example_concat_pushes)
+
 #endif