Support NODE_LASGN

ext/mjollnir/mjollnir.c

@@ -43,6 +43,15 @@ list_node_to_hash(const NODE *node)
     return result;
 }
 
+VALUE
+left_assign_to_hash(const NODE *node)
+{
+    VALUE result = rb_hash_new();
+    rb_hash_aset(result, rb_str_new2("id"), ID2SYM(RNODE_LASGN(node)->nd_vid));
+    rb_hash_aset(result, rb_str_new2("value"), ast_to_values(Qnil, RNODE_LASGN(node)->nd_value));
+    return result;
+}
+
 VALUE
 ast_to_values(VALUE hash, const NODE *node)
 {
@@ -73,6 +82,11 @@ ast_to_values(VALUE hash, const NODE *node)
 	  rb_hash_aset(result, rb_str_new2("NODE_BLOCK"), ast_to_values(hash, RNODE_BLOCK(node)->nd_head));
 	  return result;
 	}
+	case NODE_LASGN: {
+	  VALUE result = rb_hash_new();
+	  rb_hash_aset(result, rb_str_new2("NODE_LASGN"), left_assign_to_hash(node));
+	  return result;
+	}
 	case NODE_LIST: {
 	  VALUE result = rb_hash_new();
 	  rb_hash_aset(result, rb_str_new2("NODE_LIST"), list_node_to_hash(node));

test/mjollnir/parse_lasgn_test.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+class ParseLasgnTest < Minitest::Test
+  def test_parse_lasgn
+    result = Mjollnir.parse('var = 117')
+
+    expected = {
+      'NODE_SCOPE' => {
+        'NODE_LASGN' => {
+          'id' => :var,
+          'value' => {
+            'NODE_INTEGER' => 117
+          }
+        }
+      }
+    }
+
+    assert_equal expected, result
+  end
+end