Parser and Assembler implementations

Source/Core/Common/Assembler/AssemblerShared.cpp

@@ -0,0 +1,26 @@
+// Copyright 2023 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "Common/Assembler/AssemblerShared.h"
+
+#include <fmt/format.h>
+
+namespace Common::GekkoAssembler
+{
+std::string AssemblerError::FormatError() const
+{
+  const char* space_char = col == 0 ? "" : " ";
+
+  std::string_view line_str = error_line;
+  if (line_str.back() == '\n')
+  {
+    line_str = line_str.substr(0, line_str.length() - 1);
+  }
+
+  return fmt::format("Error on line {0} col {1}:\n"
+                     "  {2}\n"
+                     "  {3:{4}}{5:^^{6}}\n"
+                     "{7}",
+                     line + 1, col + 1, line_str, space_char, col, '^', len, message);
+}
+}  // namespace Common::GekkoAssembler