Add a specialized token factory

[yangtools.git] / yang / yang-parser-rfc7950 / src / main / java / org / opendaylight / yangtools / yang / parser / rfc7950 / antlr / AbstractToken.java

diff --git a/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/antlr/AbstractToken.java b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/antlr/AbstractToken.java
new file mode 100644 (file)
index 0000000..ced48bd
--- /dev/null
+++ b/yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/antlr/AbstractToken.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.parser.rfc7950.antlr;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import org.antlr.v4.runtime.WritableToken;
+
+abstract class AbstractToken implements WritableToken {
+    private int tokenIndex = -1;
+
+    @Override
+    public final int getChannel() {
+        return DEFAULT_CHANNEL;
+    }
+
+    @Override
+    public final int getTokenIndex() {
+        return tokenIndex;
+    }
+
+    @Override
+    public final void setTokenIndex(final int index) {
+        checkState(tokenIndex == -1);
+        tokenIndex = index;
+    }
+
+    @Override
+    public final void setText(final String text) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public final void setType(final int ttype) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public final void setLine(final int line) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public final void setCharPositionInLine(final int pos) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public final void setChannel(final int channel) {
+        throw new UnsupportedOperationException();
+    }
+}