channge the depth to positive only. Default is Maximum of int.

Author: moritzx22

src/graphviz.cc

@@ -87,10 +87,8 @@ void GraphViz::AddTarget(const Node* const node, const int depth) {
     }
   }
 
-  if (depth != 0) {
-    for (const auto in: edge->inputs_) {
-      AddTarget(in, depth < 0 ? -1 : depth - 1);
-    }
+  for (const auto in : edge->inputs_) {
+    AddTarget(in, depth - 1);
   }
 }
 

src/ninja.cc

@@ -21,6 +21,7 @@
 #include <algorithm>
 #include <cstdlib>
 #include <cstring>
+#include <limits>
 #include <string>
 
 #ifdef _WIN32
@@ -384,7 +385,7 @@ int NinjaMain::ToolGraph(const Options* options, int argc, char* argv[]) {
   argc++;
   argv--;
 
-  int depth = -1;
+  int depth = std::numeric_limits<int>::max();
 
   optind = 1;
   int opt;