update tree-sitter to v0.20, add header support(fixes #6)

Cargo.toml

@@ -4,7 +4,7 @@ description = "beancount grammar for the tree-sitter parsing library"
 version = "0.0.1"
 keywords = ["incremental", "parsing", "beancount"]
 categories = ["parsing", "text-editors"]
-repository = "https://github.com/tree-sitter/tree-sitter-javascript"
+repository = "https://github.com/tree-sitter/tree-sitter-beancount"
 edition = "2018"
 license = "MIT"
 
@@ -20,7 +20,7 @@ include = [
 path = "bindings/rust/lib.rs"
 
 [dependencies]
-tree-sitter = "0.19.3"
+tree-sitter = "~0.20.0"
 
 [build-dependencies]
 cc = "1.0"

grammar.js

@@ -630,6 +630,24 @@ module.exports = grammar({
             $._entry,
             $._skipped_lines,
         ),
+
+        _markdown_heading: $ => seq(
+            repeat1($._hash),
+            /.*/,
+            $._eol
+        ),
+
+        _orgmode_heading: $ => seq(
+            repeat1($.asterisk),
+            /.*/,
+            $._eol
+        ),
+
+        heading: $ => choice(
+            $._markdown_heading,
+            $._orgmode_heading
+        ),
+
         /* End Grammar Rules */
         /*--------------------------------------------------------------------------------*/
 
@@ -653,7 +671,8 @@ module.exports = grammar({
                 seq(
                     $.comment,
                     $._eol
-                )
+                ),
+                $.heading
             ),
 
         _ASCII: $ => /[\x00-\x7f]/,

package.json

@@ -22,9 +22,9 @@
   },
   "homepage": "https://github.com/bryall/tree-sitter-beancount#readme",
   "dependencies": {
-    "nan": "^2.14.1"
+    "nan": "^2.15.0"
   },
   "devDependencies": {
-    "tree-sitter-cli": "^0.19.0"
+    "tree-sitter-cli": "0.20.0"
   }
 }

shell.nix

@@ -0,0 +1,13 @@
+let
+  pkgs = import <nixpkgs> {};
+in
+pkgs.mkShell rec {
+  name = "tree-sitter";
+
+  buildInputs = with pkgs; [
+    nodejs-14_x
+    python38Full
+    tree-sitter
+  ];
+
+}

src/grammar.json

@@ -2637,6 +2637,59 @@
         }
       ]
     },
+    "_markdown_heading": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "REPEAT1",
+          "content": {
+            "type": "SYMBOL",
+            "name": "_hash"
+          }
+        },
+        {
+          "type": "PATTERN",
+          "value": ".*"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_eol"
+        }
+      ]
+    },
+    "_orgmode_heading": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "REPEAT1",
+          "content": {
+            "type": "SYMBOL",
+            "name": "asterisk"
+          }
+        },
+        {
+          "type": "PATTERN",
+          "value": ".*"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_eol"
+        }
+      ]
+    },
+    "heading": {
+      "type": "CHOICE",
+      "members": [
+        {
+          "type": "SYMBOL",
+          "name": "_markdown_heading"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_orgmode_heading"
+        }
+      ]
+    },
     "identifier": {
       "type": "PATTERN",
       "value": "[a-z]+"
@@ -2698,6 +2751,10 @@
               "name": "_eol"
             }
           ]
+        },
+        {
+          "type": "SYMBOL",
+          "name": "heading"
         }
       ]
     },

src/node-types.json

@@ -633,6 +633,10 @@
           "type": "flag",
           "named": true
         },
+        {
+          "type": "heading",
+          "named": true
+        },
         {
           "type": "include",
           "named": true
@@ -703,6 +707,21 @@
       ]
     }
   },
+  {
+    "type": "heading",
+    "named": true,
+    "fields": {},
+    "children": {
+      "multiple": true,
+      "required": false,
+      "types": [
+        {
+          "type": "asterisk",
+          "named": true
+        }
+      ]
+    }
+  },
   {
     "type": "include",
     "named": true,