make it file based rather than implicit input loader

solutions/aoc.nim

@@ -1,20 +1,21 @@
 import std/[strutils, os, macros, terminal]
+#
+# template loadInputs*(): untyped =
+#   const callPath = getProjectPath()
+#   const example* {.inject.} = slurp(callPath / "example.txt").strip()
+#   const input* {.inject.} = slurp(callPath / "input.txt").strip()
+#
 
-template loadInputs*(): untyped =
-  const callPath = getProjectPath()
-  const example* {.inject.} = slurp(callPath / "example.txt").strip()
-  const input* {.inject.} = slurp(callPath / "input.txt").strip()
-
-template solveInput*(input: string, p1: untyped, p2: untyped): untyped =
-  assert partOne(input) == p1
-  assert partTwo(input) == p2
+# template solveInput*(input: string, p1: untyped, p2: untyped): untyped =
+#   assert partOne(input) == p1
+#   assert partTwo(input) == p2
 
 macro solve*(arg: untyped): untyped =
   arg.expectKind nnkStmtList
   result = newStmtList()
   for stmt in arg:
     stmt.expectKind nnkCall
-    stmt[0].expectKind nnkIdent
+    stmt[0].expectKind nnkStrLit
     stmt[1].expectKind nnkStmtList
     for inputs in stmt[1]:
       inputs.expectKind nnkCall
@@ -22,15 +23,16 @@ macro solve*(arg: untyped): untyped =
       inputs[1].expectKind nnkStmtList
       let
         part = inputs[0]
-        puzzleInput = stmt[0]
+        inputFile = stmt[0]
         output = inputs[1][0]
-        msg = newLit(part.repr & "|" & puzzleInput.repr)
+        msg = newLit(part.repr & "|" & inputFile.strVal)
       result.add quote do:
-        let solution = `part`(`puzzleInput`)
-        if solution == `output`:
-          stdout.styledWriteLine(fgGreen, `msg`, fgDefault)
-        else:
-          stdout.styledWriteLine(fgRed, `msg`, fgDefault) 
-          stdout.writeLine("  expected: ", $`output`, "; got: ", solution)
+        block:
+          const input = slurp(getProjectPath() / `inputFile`).strip()
+          let solution = `part`(input)
+          if solution == `output`:
+            stdout.styledWriteLine fgGreen, `msg`
+          else:
+            stdout.styledWriteLine fgRed, `msg`
+            stdout.writeLine "  expected: ", $`output`, "; got: ", solution
 
-loadInputs()

solutions/day01/solution.nim

@@ -43,23 +43,11 @@ proc partTwo*(input: string): int =
         inc i
     result += parseInt(digits[0] & digits[^1])
 
-const example2 = slurp("example2.txt").strip()
-
 solve:
-  example:
+  "example.txt":
     partOne: 142
-  example2:
+  "example2.txt":
     partTwo: 281
-  input:
+  "input.txt":
     partOne: 54597
     partTwo: 54504
-
-# when isMainModule:
-#   import std/unittest
-#   suite "day 1":
-#     test "part one":
-#       check partOne(example) == 142
-#       check partOne(input) == 54597
-#     test "part two":
-#       check partTwo(example2) == 281
-#       check partTwo(input) == 54504

solutions/day02/solution.nim

@@ -47,9 +47,9 @@ proc partTwo*(input: string): int =
     result += mins[red] * mins[green] * mins[blue]
 
 solve:
-  example:
+  "example.txt":
     partOne: 8
     partTwo: 2286
-  input:
+  "input.txt":
     partOne: 2239
     partTwo: 83435

solutions/day03/solution.nim

@@ -76,9 +76,9 @@ proc partTwo*(input: string): int =
       result += parts[0].val * parts[1].val
 
 solve:
-  example:
+  "example.txt":
     partOne: 4361
     partTwo: 467835
-  input:
+  "input.txt":
     partOne: 536202
     partTwo: 78272573

solutions/day04/solution.nim

@@ -42,11 +42,10 @@ proc partTwo*(input: string): int =
         winners[i+j].inc copies
   return winners.sum()
 
-
 solve:
-  example:
+  "example.txt":
     partOne: 13
     partTwo: 30
-  input:
+  "input.txt":
     partOne: 22674
     partTwo: 5747443