Move point helpers elsewhere

spec/runtime/helpers/point_helpers.cc

@@ -0,0 +1,24 @@
+#include <string>
+#include <ostream>
+#include "runtime/length.h"
+
+using namespace std;
+
+bool operator==(const TSPoint &left, const TSPoint &right) {
+  return left.row == right.row && left.column == right.column;
+}
+
+std::ostream &operator<<(std::ostream &stream, const TSPoint &point) {
+  return stream << "{" << point.row << ", " << point.column << "}";
+}
+
+bool operator<(const TSPoint &left, const TSPoint &right) {
+  if (left.row < right.row) return true;
+  if (left.row > right.row) return false;
+
+  return left.column < right.column;
+}
+
+bool operator>(const TSPoint &left, const TSPoint &right) {
+  return right < left;
+}

spec/runtime/helpers/point_helpers.h

@@ -0,0 +1,8 @@
+
+bool operator==(const TSPoint &left, const TSPoint &right);
+
+bool operator<(const TSPoint &left, const TSPoint &right);
+
+bool operator>(const TSPoint &left, const TSPoint &right);
+
+std::ostream &operator<<(std::ostream &stream, const TSPoint &point);