From ea3e1b949dcbdc09518f17eee0bcf21d41d76896 Mon Sep 17 00:00:00 2001
From: Kenny Ballou <kballou@devnulllabs.io>
Date: Mon, 19 Nov 2018 22:59:50 -0700
Subject: OJ (aka OpenJava) modernization/mirroring

Signed-off-by: Kenny Ballou <kballou@devnulllabs.io>
---
 .../openjava/syntax/ExpressionRule.java            | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/main/java/io/devnulllabs/openjava/syntax/ExpressionRule.java

(limited to 'src/main/java/io/devnulllabs/openjava/syntax/ExpressionRule.java')

diff --git a/src/main/java/io/devnulllabs/openjava/syntax/ExpressionRule.java b/src/main/java/io/devnulllabs/openjava/syntax/ExpressionRule.java
new file mode 100644
index 0000000..e6df0b8
--- /dev/null
+++ b/src/main/java/io/devnulllabs/openjava/syntax/ExpressionRule.java
@@ -0,0 +1,68 @@
+/*
+ * ExpressionRule.java
+ *
+ * comments here.
+ *
+ * @author   Michiaki Tatsubori
+ * @version  %VERSION% %DATE%
+ * @see      java.lang.Object
+ *
+ * COPYRIGHT 1998 by Michiaki Tatsubori, ALL RIGHTS RESERVED.
+ */
+package io.devnulllabs.openjava.syntax;
+
+
+import io.devnulllabs.openjava.mop.Environment;
+import io.devnulllabs.openjava.ptree.Expression;
+import io.devnulllabs.openjava.ptree.ParseTree;
+
+
+/**
+ * The class <code>ExpressionRule</code>
+ * <p>
+ * For example
+ * <pre>
+ * </pre>
+ * <p>
+ *
+ * @author   Michiaki Tatsubori
+ * @version  1.0
+ * @since    $Id: ExpressionRule.java,v 1.2 2003/02/19 02:54:31 tatsubori Exp $
+ * @see java.lang.Object
+ */
+public class ExpressionRule extends AbstractSyntaxRule
+{
+    private Environment env;
+
+    public ExpressionRule( Environment env ) {
+    this.env = env;
+    }
+
+    public ExpressionRule() {
+    this( null );
+    }
+
+    public final ParseTree consume( TokenSource token_src )
+    throws SyntaxException
+    {
+    return this.consumeExpression( token_src );
+    }
+
+    /**
+     * Subclasses of this class can override this method to
+     * extend its returnable expressions.
+     *
+     * @param token_src token source
+     * @return expression
+     * @exception SyntaxException
+     */
+    public Expression consumeExpression( TokenSource token_src )
+    throws SyntaxException
+    {
+    Expression result
+        = JavaSyntaxRules.consumeExpression( token_src, env );
+    if (result == null)  throw JavaSyntaxRules.getLastException();
+    return result;
+    }
+
+}
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