1 files changed, 60 insertions, 0 deletions
diff --git a/src/nvim/eval/encode.h b/src/nvim/eval/encode.h
new file mode 100644
index 0000000000..0e60c96155
--- /dev/null
+++ b/src/nvim/eval/encode.h
@@ -0,0 +1,60 @@
+#ifndef NVIM_EVAL_ENCODE_H
+#define NVIM_EVAL_ENCODE_H
+
+#include <stddef.h>
+
+#include <msgpack.h>
+
+#include "nvim/eval.h"
+#include "nvim/garray.h"
+#include "nvim/vim.h"  // For STRLEN
+
+/// Convert VimL value to msgpack string
+///
+/// @param[out]  packer  Packer to save results in.
+/// @param[in]  tv  Dumped value.
+/// @param[in]  objname  Object name, used for error message.
+///
+/// @return OK in case of success, FAIL otherwise.
+int encode_vim_to_msgpack(msgpack_packer *const packer,
+                          typval_T *const tv,
+                          const char *const objname);
+
+/// Convert VimL value to :echo output
+///
+/// @param[out]  packer  Packer to save results in.
+/// @param[in]  tv  Dumped value.
+/// @param[in]  objname  Object name, used for error message.
+///
+/// @return OK in case of success, FAIL otherwise.
+int encode_vim_to_echo(garray_T *const packer,
+                       typval_T *const tv,
+                       const char *const objname);
+
+/// Structure defining state for read_from_list()
+typedef struct {
+  const listitem_T *li;  ///< Item currently read.
+  size_t offset;         ///< Byte offset inside the read item.
+  size_t li_length;      ///< Length of the string inside the read item.
+} ListReaderState;
+
+/// Initialize ListReaderState structure
+static inline ListReaderState encode_init_lrstate(const list_T *const list)
+  FUNC_ATTR_NONNULL_ALL
+{
+  return (ListReaderState) {
+    .li = list->lv_first,
+    .offset = 0,
+    .li_length = (list->lv_first->li_tv.vval.v_string == NULL
+                  ? 0
+                  : STRLEN(list->lv_first->li_tv.vval.v_string)),
+  };
+}
+
+/// Array mapping values from SpecialVarValue enum to names
+extern const char *const encode_special_var_names[];
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "eval/encode.h.generated.h"
+#endif
+#endif  // NVIM_EVAL_ENCODE_H