cleanup: Simplify code + add/update doc comments.

scip_indexer/BUILD

@@ -28,6 +28,7 @@ cc_library(
 cc_library(
     name = "scip_indexer",
     srcs = [
+        "Debug.h",
         "SCIPIndexer.cc",
     ],
     linkstatic = select({

scip_indexer/Debug.h

@@ -0,0 +1,48 @@
+#include <ostream>
+#include <string>
+#include <vector>
+
+#include "common/common.h"
+
+template <typename K, typename V, typename Fn> std::string map_to_string(const sorbet::UnorderedMap<K, V> m, Fn f) {
+    std::ostringstream out;
+    out << "{";
+    auto i = -1;
+    for (auto &[k, v] : m) {
+        i++;
+        out << f(k, v);
+        if (i != m.size() - 1) {
+            out << ", ";
+        }
+    }
+    out << "}";
+    return out.str();
+}
+
+template <typename T, typename Fn> std::string set_to_string(const sorbet::UnorderedSet<T> s, Fn f) {
+    std::ostringstream out;
+    out << "{";
+    auto i = -1;
+    for (auto &x : s) {
+        i++;
+        out << f(x);
+        if (i != s.size() - 1) {
+            out << ", ";
+        }
+    }
+    out << "}";
+    return out.str();
+}
+
+template <typename T, typename Fn> std::string vec_to_string(const std::vector<T> v, Fn f) {
+    std::ostringstream out;
+    out << "[";
+    for (auto i = 0; i < v.size(); ++i) {
+        out << f(v[i]);
+        if (i != v.size() - 1) {
+            out << ", ";
+        }
+    }
+    out << "]";
+    return out.str();
+}