chore(bench): add lua benchmarks (#135)

tests/benchmarks/benchmarks.py

@@ -29,8 +29,9 @@ BENCHMARKS = (
 ## Map from file extension to it's interpreter, Will be updated.
 INTERPRETERS = {
   '.pk'   : None,
+  '.lua'  : None,
   '.wren' : None,
-  '.rb'   : None,
+  '.js'   : None,
   '.rb'   : None,
 }
 
@@ -82,6 +83,7 @@ def update_interpreters():
   global INTERPRETERS
   INTERPRETERS['.pk']   = _find_interp('pocketlang', pocket)
   INTERPRETERS['.wren'] = _find_interp('wren',       'wren')
+  INTERPRETERS['.lua']  = _find_interp('lua',         'lua')
   INTERPRETERS['.rb']   = _find_interp('ruby',       'ruby')
   INTERPRETERS['.py']   = _find_interp('python',     python)
   INTERPRETERS['.js']   = _find_interp('javascript', 'node')

tests/benchmarks/factors/factors.lua

@@ -0,0 +1,13 @@
+local start = os.clock()
+
+local factors = {}
+local N = 50000000
+
+for i=1,N do
+	if N % i == 0 then
+		table.insert(factors, i)
+	end
+end
+
+local seconds = os.clock() - start
+print('elapsed: ' .. seconds .. 's')

tests/benchmarks/fib/fib.lua

@@ -0,0 +1,16 @@
+local function fib(n)
+	if n < 2 then
+		return n
+	else
+		return fib(n - 1) + fib(n - 2)
+	end
+end
+
+local start = os.clock()
+
+for i=1, 10 do
+	print(fib(30))
+end
+
+local seconds = os.clock() - start
+print('elapsed: ' .. seconds .. 's')

tests/benchmarks/list/list.lua

@@ -0,0 +1,22 @@
+local function reverse(arr)
+	local len = #arr
+	local max = math.floor(len / 2)
+
+	for i=1, max do
+		local idx = len + 1 - i
+		arr[i], arr[idx] = arr[idx], arr[i]
+	end
+end
+
+local start = os.clock()
+local N = 20000000
+local list = {}
+
+for i=1, N do
+	list[i] = i
+end
+
+reverse(list)
+
+local seconds = os.clock() - start
+print('elapsed: ' .. seconds .. 's')

tests/benchmarks/loop/loop.lua

@@ -0,0 +1,17 @@
+local start = os.clock()
+
+local list = {}
+for i = 1, 10000000 do
+	list[i] = i - 1
+end
+
+local sum = 0
+
+for i = 1, #list do
+	sum = sum + list[i]
+end
+
+print(sum)
+
+local seconds = os.clock() - start
+print('elapsed: ' .. seconds .. 's')

tests/benchmarks/primes/primes.lua

@@ -0,0 +1,25 @@
+local function isPrime(n)
+	if n < 2 then
+		return false
+	end
+  for i=2, n-1 do
+    if n % i == 0 then
+			return false
+		end
+  end
+  return true
+end
+
+local start = os.clock()
+
+local N = 30000
+local primes = {}
+
+for i = 0, N - 1 do
+	if isPrime(i) then
+		table.insert(primes, i)
+	end
+end
+
+local seconds = os.clock() - start
+print('elapsed: ' .. seconds .. 's')