From 7f734ecc098a2a113ced835cefc9d4e1982f08d0 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Sat, 16 Aug 2014 23:50:36 +0200
Subject: Added module->uniquify()

---
 kernel/rtlil.cc | 22 ++++++++++++++++++++++
 kernel/rtlil.h  |  3 +++
 2 files changed, 25 insertions(+)

(limited to 'kernel')

diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 3df7d83c4..60c514d19 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -1108,6 +1108,28 @@ void RTLIL::Module::swap_names(RTLIL::Cell *c1, RTLIL::Cell *c2)
 	cells_[c2->name] = c2;
 }
 
+RTLIL::IdString RTLIL::Module::uniquify(RTLIL::IdString name)
+{
+	int index = 0;
+	return uniquify(name, index);
+}
+
+RTLIL::IdString RTLIL::Module::uniquify(RTLIL::IdString name, int &index)
+{
+	if (index == 0) {
+		if (count_id(name) == 0)
+			return name;
+		index++;
+	}
+
+	while (1) {
+		RTLIL::IdString new_name = stringf("%s_%d", name.c_str(), index);
+		if (count_id(new_name) == 0)
+			return new_name;
+		index++;
+	}
+}
+
 static bool fixup_ports_compare(const RTLIL::Wire *a, const RTLIL::Wire *b)
 {
 	if (a->port_id && !b->port_id)
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 43e36cbde..7e052b091 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -625,6 +625,9 @@ public:
 	void swap_names(RTLIL::Wire *w1, RTLIL::Wire *w2);
 	void swap_names(RTLIL::Cell *c1, RTLIL::Cell *c2);
 
+	RTLIL::IdString uniquify(RTLIL::IdString name);
+	RTLIL::IdString uniquify(RTLIL::IdString name, int &index);
+
 	RTLIL::Wire *addWire(RTLIL::IdString name, int width = 1);
 	RTLIL::Wire *addWire(RTLIL::IdString name, const RTLIL::Wire *other);
 
-- 
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