1 files changed, 0 insertions, 91 deletions
diff --git a/grammar.lua b/grammar.lua
deleted file mode 100644
index bdc7347..0000000
--- a/grammar.lua
+++ /dev/null
@@ -1,91 +0,0 @@
-local module = {}
-setmetatable(module, {__index=_G})
-setfenv(1, module)
-
-
-local Grammar = {}
-
-function module.createGrammar(nonterminals, triggers)
-  local self = {
-    nonterminals = nonterminals,
-    triggers = triggers,
-    context = {},
-  }
-  setmetatable(self, {__index=Grammar})
-  return self
-end
-
-
-function Grammar.pushContext(self)
-  local newContext = {}
-  setmetatable(newContext, {__index=self.context})
-  self.context = newContext
-end
-function Grammar.popContext(self)
-  local mt = getmetatable(self.context)
-  local oldContext = (mt and mt.__index) or {}
-  self.context = oldContext
-end
-
-
-function Grammar.expandSymbol(self, sequence, index, expansion)
-  table.remove(sequence, index)
-  for i=1,#expansion do
-    table.insert(sequence, index+i-1, expansion[i])
-  end
-end
-
-
-function Grammar.expandSequence(self, sequence, n, debug)
-  local i = 1
-  while i <= #sequence do
-    if debug then print(sequence[i]) end
-    local choices = self.nonterminals[sequence[i]] or self.context[sequence[i]]
-    if choices then
-      local trigger = self.triggers[sequence[i]]
-      if trigger then trigger(self) end
-      if #choices == 1 then
-        self:expandSymbol(sequence, i, choices[1])
-        return true, 0
-      else
-        local choice = choices[1 + (n % #choices)]
-        self:expandSymbol(sequence, i, choice)
-        return true, 1
-      end
-    else
-      i = i+1
-    end
-  end
-  return false, 0
-end
-
-
-function Grammar.expand(self, genome, geneIndex, maxLoops, debug)
-  geneIndex = geneIndex or 0
-  maxLoops = maxLoops or 2
-  local sequence = { '<start>' }
-  local count = 0
-  local continue = true
-  while continue do
-    local gene
-    if (count > maxLoops * #genome) then
-      gene = 0
-    else
-      gene = genome[1 + (geneIndex % #genome)]
-    end
-    local increment
-    if debug then print(geneIndex, gene) end
-    continue, increment = self:expandSequence(sequence, gene, debug)
-    if not continue then break end
-    geneIndex = geneIndex+increment
-    count = count + 1
-  end
-  local result = ''
-  for _, s in ipairs(sequence) do
-    result = result .. s
-  end
-  return result, geneIndex
-end
-
-
-return module