init

.gitignore

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+.antlr

README.md

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+# takentaal
+
+## Commands
+
+```bash
+nix develop
+antlr4-parse takentaal.g4 takentaal example -tree
+antlr4-parse takentaal.g4 takentaal example -tokens
+``

example

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+# Full work plan {5000}
+
+This is the description of the entire work plan.
+
+## First task {1000}
+
+This is the description of the first task.
+This line is still part of the first paragraph of the description.
+
+This is a second paragraph of that description.
+
+- First subtask {500}
+/ Second subtask {500}
+
+## Second task {1000}
+
+This is the description of the second task.
+
+* First subtask {500}
+- Second subtask {500}

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1721782431,
+        "narHash": "sha256-UNDpwjYxNXQet/g3mgRLsQ9zxrbm9j2JEvP4ijF3AWs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4f02464258baaf54992debfd010a7a3662a25536",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, utils }:
+    utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShell = with pkgs; mkShell {
+          buildInputs = [
+            jdk
+            antlr
+          ];
+        };
+      });
+}

takentaal.g4

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+grammar takentaal;
+
+takentaal
+    : line+ EOF
+    ;
+
+line
+    : plan
+    | task
+    | subtask
+    | comment
+    ;
+
+plan
+    : PLAN_TOKEN TEXT
+    | PLAN_TOKEN TEXT AMOUNT
+    ;
+
+task
+    : TASK_TOKEN TEXT
+    | TASK_TOKEN TEXT AMOUNT
+    ;
+
+subtask
+    : subtask_new
+    | subtask_partial
+    | subtask_complete
+    | subtask_obsolete
+    ;
+
+subtask_new
+    : SUBTASK_NEW_TOKEN TEXT AMOUNT?
+    ;
+
+subtask_partial
+    : SUBTASK_PARTIAL_TOKEN TEXT AMOUNT?
+    ;
+
+subtask_complete
+    : SUBTASK_COMPLETE_TOKEN TEXT AMOUNT?
+    ;
+
+subtask_obsolete
+    : SUBTASK_OBSOLETE_TOKEN TEXT AMOUNT?
+    ;
+
+comment
+    : TEXT
+    ;
+
+PLAN_TOKEN
+    : '# '
+    ;
+
+TASK_TOKEN
+    : '## '
+    ;
+
+SUBTASK_NEW_TOKEN
+    : '- '
+    ;
+
+SUBTASK_PARTIAL_TOKEN
+    : '/ '
+    ;
+
+SUBTASK_COMPLETE_TOKEN
+    : '* '
+    ;
+
+SUBTASK_OBSOLETE_TOKEN
+    : '! '
+    ;
+
+WS
+    : [ \r\n\t]+ -> skip
+    ;
+
+AMOUNT
+    : '{' INT+ '}'
+    ;
+
+fragment INT
+    : [0-9]
+    ;
+
+TEXT
+    : TEXTHEAD TEXTBODY*
+    ;
+
+fragment TEXTHEAD
+    : [a-zA-Z]
+    ;
+
+fragment TEXTBODY
+    : TEXTHEAD
+    | [0-9_()., ]
+    ;