feat: add fields to (document)

README.md

@@ -45,7 +45,7 @@ Text
 Parses as:
 ```
 (document [0, 0] - [16, 0]
-  (body [0, 0] - [4, 0]
+  body: (body [0, 0] - [4, 0]
     directive: (directive [0, 0] - [1, 0]
       name: (expr [0, 2] - [0, 7])
       value: (value [0, 9] - [0, 16]
@@ -55,7 +55,7 @@ Parses as:
       (expr [2, 5] - [2, 12])
       (expr [2, 13] - [2, 16])
       (expr [2, 17] - [2, 22])))
-  (section [4, 0] - [16, 0]
+  subsection: (section [4, 0] - [16, 0]
     headline: (headline [4, 0] - [5, 0]
       stars: (stars [4, 0] - [4, 1])
       item: (item [4, 2] - [4, 12]
@@ -110,7 +110,6 @@ Parses as:
       body: (body [14, 0] - [16, 0]
         (paragraph [15, 0] - [16, 0]
           (expr [15, 0] - [15, 4]))))))
-
 ```
 
 ## Install

corpus/basic.tst

@@ -412,7 +412,7 @@ DynamicBlock.1  - Empty
 --------------------------------------------------------------------------------
 
 (document
-  (body
+  body: (body
     (dynamic_block
       name: (expr)
       parameter: (expr))))
@@ -426,7 +426,7 @@ c
 --------------------------------------------------------------------------------
 
 (document
-  (body
+  body: (body
     (dynamic_block
       name: (expr)
       contents: (contents

grammar.js

@@ -53,7 +53,10 @@ org_grammar = {
 
   rules: {
 
-    document: $ => seq(optional($.body), repeat($.section)),
+    document: $ => seq(
+      optional(field('body', $.body)),
+      repeat(field('subsection', $.section)),
+    ),
 
     // Set up to prevent lexing conflicts of having two paragraphs in a row
     body: $ => $._body_contents,

src/grammar.json

@@ -8,8 +8,12 @@
           "type": "CHOICE",
           "members": [
             {
-              "type": "SYMBOL",
-              "name": "body"
+              "type": "FIELD",
+              "name": "body",
+              "content": {
+                "type": "SYMBOL",
+                "name": "body"
+              }
             },
             {
               "type": "BLANK"
@@ -19,8 +23,12 @@
         {
           "type": "REPEAT",
           "content": {
-            "type": "SYMBOL",
-            "name": "section"
+            "type": "FIELD",
+            "name": "subsection",
+            "content": {
+              "type": "SYMBOL",
+              "name": "section"
+            }
           }
         }
       ]

src/node-types.json

@@ -193,20 +193,27 @@
   {
     "type": "document",
     "named": true,
-    "fields": {},
-    "children": {
-      "multiple": true,
-      "required": false,
-      "types": [
-        {
-          "type": "body",
-          "named": true
-        },
-        {
-          "type": "section",
-          "named": true
-        }
-      ]
+    "fields": {
+      "body": {
+        "multiple": false,
+        "required": false,
+        "types": [
+          {
+            "type": "body",
+            "named": true
+          }
+        ]
+      },
+      "subsection": {
+        "multiple": true,
+        "required": false,
+        "types": [
+          {
+            "type": "section",
+            "named": true
+          }
+        ]
+      }
     }
   },
   {