designate else_clause inside of if_statement

Author: resolritter

grammar.js

@@ -239,14 +239,13 @@ module.exports = grammar({
       optional($._automatic_semicolon)
     )),
 
+    else_clause: $ => seq('else', $._statement),
+
     if_statement: $ => prec.right(seq(
       'if',
       field('condition', $.parenthesized_expression),
       field('consequence', $._statement),
-      optional(seq(
-        'else',
-        field('alternative', $._statement)
-      ))
+      optional(field('alternative', $.else_clause))
     )),
 
     switch_statement: $ => seq(

test/corpus/semicolon_insertion.txt

@@ -160,7 +160,8 @@ if (a) {b} else {c}
 (program
   (if_statement (parenthesized_expression (identifier))
     (statement_block (expression_statement (identifier)))
-    (statement_block (expression_statement (identifier)))))
+    (else_clause
+      (statement_block (expression_statement (identifier))))))
 
 ===========================================
 single-line blocks without semicolons

test/corpus/statements.txt

@@ -196,16 +196,18 @@ if (a) {
   (if_statement
     condition: (parenthesized_expression (identifier))
     consequence: (expression_statement (identifier))
-    alternative: (if_statement
-      condition: (parenthesized_expression (identifier))
-      consequence: (expression_statement (identifier))))
+    alternative: (else_clause
+      (if_statement
+        condition: (parenthesized_expression (identifier))
+        consequence: (expression_statement (identifier)))))
   (if_statement
     condition: (parenthesized_expression (identifier))
     consequence: (statement_block
       (expression_statement (identifier))
       (expression_statement (identifier)))
-    alternative: (statement_block
-      (expression_statement (identifier)))))
+    alternative: (else_clause
+      (statement_block
+        (expression_statement (identifier))))))
 
 ============================================
 For statements
@@ -682,7 +684,8 @@ if (true) {} else {}
   (if_statement
     (parenthesized_expression (true))
     (statement_block)
-    (statement_block)))
+    (else_clause
+      (statement_block))))
 
 ============================================
 Labeled statements
@@ -720,8 +723,9 @@ while (true) {
           condition: (parenthesized_expression (identifier))
           consequence: (statement_block
             (break_statement label: (statement_identifier)))
-          alternative: (statement_block
-            (continue_statement label: (statement_identifier)))))))
+          alternative: (else_clause
+            (statement_block
+              (continue_statement label: (statement_identifier))))))))
   (labeled_statement
     label: (statement_identifier)
     (statement_block