1 files changed, 21 insertions, 0 deletions
diff --git a/src/2018/day7/aoc.cpp b/src/2018/day7/aoc.cpp
index e879fb5..6210814 100644
--- a/src/2018/day7/aoc.cpp
+++ b/src/2018/day7/aoc.cpp
@@ -1,4 +1,25 @@
 #include "aoc.h"
 
 namespace aoc2018 {
+std::map<char, instruction*> instruction::instructions = {};
+
+void day7(line_view file, char sequence[]) {
+  per_line(file, [](line_view lv) {
+    char p1 = *(lv.line + 5);
+    char p2 = *(lv.line + 36);
+    instruction* i1 = instruction::make(p1);
+    instruction* i2 = instruction::make(p2);
+    i2->add_dependency(i1);
+    return true;
+  });
+
+  instruction* n = instruction::next();
+  int i{0};
+  while (n != nullptr) {
+    sequence[i++] = n->label;
+    n->make_done();
+    n = instruction::next();
+  }
 }
+
+} // namespace aoc2018