Raise SyntaxError on pattern match if the feature isn’t enabled

The message is “syntax error, unexpected keyword_in” because that’s what TruffleRuby (without pattern matching support) currently raises. # Conflicts: # src/main/java/org/truffleruby/parser/BodyTranslator.java
oracle · Dec 16, 2020 · 4ca026c · 4ca026c
1 parent 1314c85
commit 4ca026c
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/main/java/org/truffleruby/parser/BodyTranslator.java b/src/main/java/org/truffleruby/parser/BodyTranslator.java
@@ -831,6 +831,16 @@ public RubyNode visitCaseNode(CaseParseNode node) {
 
     @Override
     public RubyNode visitCaseInNode(CaseInParseNode node) {
+        if (!language.options.PATTERN_MATCHING) {
+            final RubyContext context = RubyLanguage.getCurrentContext();
+            throw new RaiseException(
+                    context,
+                    context.getCoreExceptions().syntaxError(
+                            "syntax error, unexpected keyword_in",
+                            currentNode,
+                            node.getPosition().toSourceSection(source)));
+        }
+
         final SourceIndexLength sourceSection = node.getPosition();
 
         RubyNode elseNode = translateNodeOrNil(sourceSection, node.getElseNode());