cleanup

1 files changed, 50 insertions, 0 deletions

diff --git a/script/proto/converter.lua b/script/proto/converter.lua
new file mode 100644
index 00000000..4b4b9f5d
--- /dev/null
+++ b/script/proto/converter.lua
@@ -0,0 +1,50 @@
+local guide = require 'parser.guide'
+
+local m = {}
+
+
+---@alias position {line: integer, character: integer}
+
+---@param uri uri
+---@param pos integer
+---@return position
+function m.packPosition(uri, pos)
+    local row, col = guide.rowColOf(pos)
+    return {
+        line      = row,
+        character = col,
+    }
+end
+
+---@param uri      uri
+---@param position position
+function m.unpackPosition(uri, position)
+    local pos = guide.positionOf(position.line, position.character)
+    return pos
+end
+
+---@alias range {start: position, end: position}
+
+---@param uri    uri
+---@param start  integer
+---@param finish integer
+---@return range
+function m.packRange(uri, start, finish)
+    local range = {
+        start   = m.packPosition(uri, start),
+        ['end'] = m.packPosition(uri, finish),
+    }
+    return range
+end
+
+---@param uri   uri
+---@param range range
+---@return integer start
+---@return integer finish
+function m.unpackRange(uri, range)
+    local start  = m.unpackPosition(uri, range.start)
+    local finish = m.unpackPosition(uri, range['end'])
+    return start, finish
+end
+
+return m