Add basic support for foreach

corpus/foreach.txt

@@ -0,0 +1,34 @@
+==========================================
+[foreach, lowercase, empty_for, empty_end]
+==========================================
+
+foreach(var)
+endforeach()
+
+---
+
+(source_file
+ (command_invocation
+  (foreach_loop
+   (variable)
+  )
+ )
+)
+
+==============================================
+[foreach, lowercase, empty_for, non_empty_end]
+==============================================
+
+foreach(var)
+endforeach(var)
+
+---
+
+(source_file
+ (command_invocation
+  (foreach_loop
+   (variable)
+   (variable)
+  )
+ )
+)

grammar.js

@@ -40,24 +40,20 @@ module.exports = grammar({
 
     foreach_loop: ($) =>
       seq(
-        repeat($.space),
-        /foreach/i,
+        "foreach",
         repeat($.space),
         "(",
+        $.variable,
         repeat($.seperation),
         optional($.arguments),
+        ")",
+        "endforeach",
+        "(",
+        optional($.variable),
         ")"
       ),
     normal_command: ($) =>
-      seq(
-        repeat($.space),
-        $.identifier,
-        repeat($.space),
-        "(",
-        repeat($.seperation),
-        optional($.arguments),
-        ")"
-      ),
+      seq($.identifier, repeat($.space), "(", repeat($.seperation), optional($.arguments), ")"),
 
     command_invocation: ($) => choice($.normal_command, $.foreach_loop),
   },

src/grammar.json

@@ -386,14 +386,7 @@
       "type": "SEQ",
       "members": [
         {
-          "type": "REPEAT",
-          "content": {
-            "type": "SYMBOL",
-            "name": "space"
-          }
-        },
-        {
-          "type": "PATTERN",
+          "type": "STRING",
           "value": "foreach"
         },
         {
@@ -407,6 +400,10 @@
           "type": "STRING",
           "value": "("
         },
+        {
+          "type": "SYMBOL",
+          "name": "variable"
+        },
         {
           "type": "REPEAT",
           "content": {
@@ -426,6 +423,30 @@
             }
           ]
         },
+        {
+          "type": "STRING",
+          "value": ")"
+        },
+        {
+          "type": "STRING",
+          "value": "endforeach"
+        },
+        {
+          "type": "STRING",
+          "value": "("
+        },
+        {
+          "type": "CHOICE",
+          "members": [
+            {
+              "type": "SYMBOL",
+              "name": "variable"
+            },
+            {
+              "type": "BLANK"
+            }
+          ]
+        },
         {
           "type": "STRING",
           "value": ")"
@@ -435,13 +456,6 @@
     "normal_command": {
       "type": "SEQ",
       "members": [
-        {
-          "type": "REPEAT",
-          "content": {
-            "type": "SYMBOL",
-            "name": "space"
-          }
-        },
         {
           "type": "SYMBOL",
           "name": "identifier"

src/node-types.json

@@ -121,7 +121,7 @@
     "fields": {},
     "children": {
       "multiple": true,
-      "required": false,
+      "required": true,
       "types": [
         {
           "type": "arguments",
@@ -134,6 +134,10 @@
         {
           "type": "space",
           "named": true
+        },
+        {
+          "type": "variable",
+          "named": true
         }
       ]
     }
@@ -376,6 +380,14 @@
     "type": "]",
     "named": false
   },
+  {
+    "type": "endforeach",
+    "named": false
+  },
+  {
+    "type": "foreach",
+    "named": false
+  },
   {
     "type": "identifier",
     "named": true