Day 1

.gitignore

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+input/

day1.moon

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+import aoc from require"utils"
+rex = require "rex_pcre2"
+
+aoc 1, 1, =>
+    sum = 0
+    for k in @gmatch "(%w+)"
+        digits = {}
+        for i = 1, #k
+            if string.match (k\sub i, i), "%d"
+                digits[#digits + 1] = k\sub i, i
+        sum += tonumber (digits[1] .. digits[#digits])
+    sum
+
+aoc 1, 2, =>
+    regex = "([0-9]|on(?=e)|tw(?=o)|thre(?=e)|four|fiv(?=e)|six|seve(?=n)|eigh(?=t)|nin(?=e)).*?"
+    rewrite = {
+        on: "1",
+        tw: "2",
+        thre: "3",
+        four: "4",
+        fiv: "5",
+        six: "6",
+        seve: "7",
+        eigh: "8",
+        nin: "9"
+    }
+    sum = 0
+    for k in @gmatch "(%w+)"
+        digits = {}
+        for d in rex.gmatch k, regex
+            digits[#digits + 1] = rewrite[d] or d
+        sum += tonumber (digits[1] .. digits[#digits])
+    sum
+

utils.moon

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+import p from require "moon"
+aoc = (day, problem, fun) ->
+    with io.open "input/#{day}.txt"
+        data = \read "*a"
+        print "============ #{day}.#{problem} ================"
+        out = fun data
+        print out
+        \close!
+
+{:aoc, :p}