initial

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -0,0 +1,3 @@
+bin
+.direnv
+/result*

default.nix

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+{ mkSilverBin, nix-gitignore }:
+
+mkSilverBin {
+  pname = "ableGo";
+  version = "0.1.0";
+
+  src = nix-gitignore.gitignoreSource [ ./.gitignore ] ./.;
+
+  grammarName = "io:mzhang:ableGo:compiler";
+  javaFlags = [ "-Xss8M" ];
+}

flake.lock

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+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "melt": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1667881871,
+        "narHash": "sha256-Tf1NSz9p5JezcWFSmL/nrqoC8qSVFmqHQjnAAnV5uQs=",
+        "owner": "~remexre",
+        "repo": "melt.nix",
+        "rev": "e5c89aee04f575e08cf75e98009d1604db81844c",
+        "type": "sourcehut"
+      },
+      "original": {
+        "owner": "~remexre",
+        "repo": "melt.nix",
+        "type": "sourcehut"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1666926733,
+        "narHash": "sha256-+gYfOEnQVISPDRNoWm2VJD5OEuTUySt48RchLpvm61o=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "f44ba1be526c8da9e79a5759feca2365204003f6",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1667629849,
+        "narHash": "sha256-P+v+nDOFWicM4wziFK9S/ajF2lc0N2Rg9p6Y35uMoZI=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "3bacde6273b09a21a8ccfba15586fb165078fb62",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "melt": "melt",
+        "nixpkgs": "nixpkgs_2"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "A very basic flake";
+
+  inputs.melt.url = "sourcehut:~remexre/melt.nix";
+
+  outputs = { self, nixpkgs, flake-utils, melt }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ (final: prev: melt.packages.${system}) ];
+        };
+
+        flakePkgs = rec {
+          ablego = pkgs.callPackage ./. {
+            inherit (melt.legacyPackages.${system}) mkSilverBin;
+          };
+        };
+      in rec {
+        defaultPackage = packages.ablego;
+
+        packages = flake-utils.lib.flattenTree flakePkgs;
+
+        devShell = pkgs.mkShell { inputsFrom = with packages; [ ablego ]; };
+      });
+}

grammars/io.mzhang.ableGo/compiler/Main.sv

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+function main
+IOVal<Integer> ::= args::[String] ioIn::IOToken
+{
+  local fileName :: String = head(args);
+
+  local result :: IO<Integer> = do {
+    return 123;
+  };
+
+  return evalIO(result, ioIn);
+}