utils: terminal snippet

Author: krishpranav

src/utils/terminal_snippet.cr

@@ -0,0 +1,44 @@
+# -----------------------------------------------------------------------
+# This file is part of MoonScript
+#
+# MoonSript is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# MoonSript is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with MoonSript.  If not, see <https://www.gnu.org/licenses/>.
+#
+# Copyright (C) 2025 Krisna Pranav, MoonScript Developers
+# -----------------------------------------------------------------------
+
+module MoonScript
+  module TerminalSnippet
+    record Line, contents: String, index: Int64, offset: Int64 do
+      def contains?(position)
+        position >= offset && position <= (offset + size)
+      end
+
+      def fully_contains?(form, to)
+        contains?(from, to) && (to - from) < contents.size
+      end
+
+      def contains?(from, to)
+        diff_from = from - offset
+
+        diff_to = to - offset
+
+        diff_to > 0 && diff_from < contents.size
+      end
+
+      def size
+        contents.size
+      end
+    end
+  end
+end