Rename gridless router

compiler/modules/sram_1bank.py

@@ -256,7 +256,7 @@ class sram_1bank(design, verilog, lef):
         elif OPTS.route_supplies == "grid":
             from openram.router import supply_grid_router as router
         elif OPTS.route_supplies == "navigation":
-            from openram.router import navigation_router as router
+            from openram.router import hanan_router as router
         else:
             from openram.router import supply_tree_router as router
         rtr=router(layers=self.supply_stack,

compiler/router/__init__.py

@@ -8,4 +8,4 @@ from .signal_escape_router import *
 from .signal_router import *
 from .supply_grid_router import *
 from .supply_tree_router import *
-from .navigation_router import *
+from .hanan_router import *

compiler/router/hanan_graph.py

@@ -10,12 +10,12 @@ from openram.base.pin_layout import pin_layout
 from openram.base.vector import vector
 from openram.base.vector3d import vector3d
 from .direction import direction
-from .navigation_node import navigation_node
-from .navigation_utils import *
+from .hanan_node import hanan_node
+from .hanan_utils import *
 
 
-class navigation_graph:
-    """ This is the navigation graph created from the blockages. """
+class hanan_graph:
+    """ This is the Hanan graph created from the blockages. """
 
     def __init__(self, router):
 
@@ -30,7 +30,7 @@ class navigation_graph:
 
     def create_graph(self, layout_source, layout_target):
         """ Create the Hanan graph to run routing on later. """
-        debug.info(0, "Creating the navigation graph for source '{0}' and target'{1}'.".format(layout_source, layout_target))
+        debug.info(0, "Creating the Hanan graph for source '{0}' and target'{1}'.".format(layout_source, layout_target))
 
         # Find the region to be routed and only include objects inside that region
         region = deepcopy(layout_source)
@@ -96,7 +96,7 @@ class navigation_graph:
         # Create graph nodes from Hanan points
         self.nodes = []
         for point in hanan_points:
-            self.nodes.append(navigation_node(point))
+            self.nodes.append(hanan_node(point))
 
         # Connect closest points avoiding blockages
         for i in range(len(self.nodes)):

compiler/router/hanan_node.py

@@ -7,16 +7,16 @@ from openram.base.vector import vector
 from openram.base.vector3d import vector3d
 
 
-class navigation_node:
-    """ This class represents a node on the navigation graph. """
+class hanan_node:
+    """ This class represents a node on the Hanan graph. """
 
     # This is used to assign unique ids to nodes
     next_id = 0
 
     def __init__(self, center):
 
-        self.id = navigation_node.next_id
-        navigation_node.next_id += 1
+        self.id = hanan_node.next_id
+        hanan_node.next_id += 1
         if isinstance(center, vector3d):
             self.center = center
         else:

compiler/router/hanan_router.py

@@ -12,12 +12,12 @@ from openram.tech import GDS
 from openram.tech import layer as tech_layer
 from openram import OPTS
 from .router_tech import router_tech
-from .navigation_graph import navigation_graph
+from .hanan_graph import hanan_graph
 
 
-class navigation_router(router_tech):
+class hanan_router(router_tech):
     """
-    This is the router class that implements navigation graph routing algorithm.
+    This is the router class that implements Hanan graph routing algorithm.
     """
 
     def __init__(self, layers, design, bbox=None, pin_type=None):
@@ -51,7 +51,7 @@ class navigation_router(router_tech):
         # Find blockages
         self.find_blockages()
 
-        # Create the navigation graph
+        # Create the hanan graph
         # TODO: Remove this part later and route all pins
         vdds = list(self.pins["vdd"])
         vdds.sort()
@@ -64,11 +64,11 @@ class navigation_router(router_tech):
         next(pin_iter)
         next(pin_iter)
         vdd_1 = next(pin_iter)
-        self.nav = navigation_graph(self)
-        self.nav.create_graph(vdd_0, vdd_1)
+        self.hg = hanan_graph(self)
+        self.hg.create_graph(vdd_0, vdd_1)
 
         # Find the shortest path from source to target
-        path = self.nav.find_shortest_path(vdd_0, vdd_1)
+        path = self.hg.find_shortest_path(vdd_0, vdd_1)
 
         # Create the path shapes on layout
         if path:
@@ -151,9 +151,9 @@ class navigation_router(router_tech):
 
         # Display the inflated blockage
         if "nav" in self.__dict__:
-            for blockage in self.nav.graph_blockages:
+            for blockage in self.hg.graph_blockages:
                 self.add_object_info(blockage, "blockage")
-            for node in self.nav.nodes:
+            for node in self.hg.nodes:
                 offset = (node.center.x, node.center.y)
                 self.design.add_label(text="O",
                                       layer="text",

compiler/router/hanan_utils.py

@@ -4,7 +4,7 @@
 # All rights reserved.
 #
 """
-Utility functions for navigation router.
+Utility functions for Hanan router.
 """
 
 def is_probe_blocked(p1, p2, blockages):