Optimize code by 16.5%

Author: bytexenon

src/Evaluator/Evaluator.lua

@@ -1,7 +1,7 @@
 --[[
   Name: Evaluator.lua
   Author: ByteXenon [Luna Gilbert]
-  Date: 2024-02-21
+  Date: 2024-05-21
 --]]
 
 --* Imports *--

src/Helpers/Helpers.lua

@@ -1,10 +1,12 @@
 --[[
   Name: Helpers.lua
   Author: ByteXenon [Luna Gilbert]
-  Date: 2024-01-10
+  Date: 2024-05-21
 --]]
 
 --* Imports *--
+local char   = string.char
+local match  = string.match
 local gmatch = string.gmatch
 local insert = table.insert
 
@@ -35,4 +37,18 @@ function Helpers.stringToTable(string)
   return table
 end
 
+--- Converts a pattern to a character lookup table.
+-- @param <String> pattern The pattern to convert.
+-- @return <Table> table The table of characters.
+function Helpers.createPatternLookupTable(pattern)
+  local lookupTable = {}
+  for i = 0, 255 do
+    local character = char(i)
+    if match(character, pattern) then
+      lookupTable[character] = true
+    end
+  end
+  return lookupTable
+end
+
 return Helpers