From ebb085326ebfdaa7329c266b253310dfe4cb46a7 Mon Sep 17 00:00:00 2001
From: krasimir <krasimir@chalmers.se>
Date: Thu, 11 May 2017 13:41:41 +0000
Subject: just for fun: hashCode for expressions

---
 src/runtime/java/jpgf.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/runtime/java/jpgf.c')

diff --git a/src/runtime/java/jpgf.c b/src/runtime/java/jpgf.c
index bca7a64e0..9b09068d5 100644
--- a/src/runtime/java/jpgf.c
+++ b/src/runtime/java/jpgf.c
@@ -1388,6 +1388,13 @@ Java_org_grammaticalframework_pgf_Expr_equals(JNIEnv* env, jobject self, jobject
 		return JNI_FALSE;
 }
 
+JNIEXPORT jint JNICALL
+Java_org_grammaticalframework_pgf_Expr_hashCode(JNIEnv* env, jobject self)
+{
+	PgfExpr e = gu_variant_from_ptr(l2p(get_ref(env, self)));
+	return pgf_expr_hash(0, e);
+}
+
 JNIEXPORT jstring JNICALL
 Java_org_grammaticalframework_pgf_Type_getCategory(JNIEnv* env, jobject self)
 {
-- 
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