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diff --git a/libbanshee/engine/flow-var.h b/libbanshee/engine/flow-var.h
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+++ b/libbanshee/engine/flow-var.h
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+/*
+ * Copyright (c) 2000-2001
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#ifndef FLOW_VAR_H
+#define FLOW_VAR_H
+
+#include "linkage.h"
+#include "banshee.h"
+#include "jcollection.h"
+
+EXTERN_C_BEGIN
+
+typedef struct flow_var *flow_var;
+
+typedef gen_e (*contour_inst_fn_ptr) (fresh_fn_ptr,get_stamp_fn_ptr,gen_e) deletes;
+
+struct contour
+{
+  gen_e shape;
+  fresh_fn_ptr fresh;
+  get_stamp_fn_ptr get_stamp;
+  contour_inst_fn_ptr instantiate;
+};
+
+typedef struct contour *contour;
+
+DECLARE_LIST(flow_var_list, flow_var)
+   
+flow_var fv_fresh(region r, const char *name);
+flow_var fv_fresh_large(region r, const char *name);
+flow_var fv_fresh_small(region r, const char *name);
+const char * fv_get_name(flow_var v);
+gen_e_list fv_get_lbs(flow_var v);
+gen_e_list fv_get_ubs(flow_var v);
+bool fv_add_ub(flow_var v, gen_e e, stamp st);
+bool fv_add_lb(flow_var v, gen_e e, stamp st);
+bool fv_is_ub(flow_var v, stamp st);
+bool fv_is_lb(flow_var v, stamp st);
+
+void fv_set_alias(flow_var v, gen_e e);
+gen_e fv_get_alias(flow_var v);
+void fv_set_contour(flow_var v, contour c);
+bool fv_has_contour(flow_var v);
+void fv_unify_contour(flow_var v1, flow_var v2);
+gen_e fv_instantiate_contour(flow_var v) deletes;
+
+EXTERN_C_END
+
+#endif /* FLOW_VAR_H */