Added -color <color> <selection> option to show command

kernel/register.cc

@@ -135,9 +135,6 @@ void Pass::cmd_error(const std::vector<std::string> &args, size_t argidx, std::s
 			msg.c_str(), command_text.c_str(), error_pos, "");
 }
 
-// implemented in kernel/select.cc
-extern void handle_extra_select_args(Pass *pass, std::vector<std::string> args, size_t argidx, RTLIL::Design *design);
-
 void Pass::extra_args(std::vector<std::string> args, size_t argidx, RTLIL::Design *design, bool select)
 {
 	for (; argidx < args.size(); argidx++)
@@ -150,7 +147,7 @@ void Pass::extra_args(std::vector<std::string> args, size_t argidx, RTLIL::Desig
 		if (!select)
 			cmd_error(args, argidx, "Extra argument.");
 
-		handle_extra_select_args(this, args, argidx, design);
+		handle_extra_select_args(this, args, argidx, args.size(), design);
 		break;
 	}
 	cmd_log_args(args);

kernel/register.h

@@ -84,6 +84,9 @@ struct Backend : Pass
 	static void backend_call(RTLIL::Design *design, FILE *f, std::string filename, std::vector<std::string> args);
 };
 
+// implemented in kernel/select.cc
+extern void handle_extra_select_args(Pass *pass, std::vector<std::string> args, size_t argidx, size_t args_size, RTLIL::Design *design);
+
 namespace REGISTER_INTERN {
 	extern int raw_register_count;
 	extern bool raw_register_done;

kernel/select.cc

@@ -586,20 +586,27 @@ static void select_stmt(RTLIL::Design *design, std::string arg)
 	select_filter_active_mod(design, work_stack.back());
 }
 
-// used in kernel/register.cc
+// used in kernel/register.cc and maybe other locations, extern decl. in register.h
-void handle_extra_select_args(Pass *pass, std::vector<std::string> args, size_t argidx, RTLIL::Design *design)
+void handle_extra_select_args(Pass *pass, std::vector<std::string> args, size_t argidx, size_t args_size, RTLIL::Design *design)
 {
 	work_stack.clear();
-	for (; argidx < args.size(); argidx++) {
+	for (; argidx < args_size; argidx++) {
-		if (args[argidx].substr(0, 1) == "-")
+		if (args[argidx].substr(0, 1) == "-") {
-			pass->cmd_error(args, argidx, "Unexpected option in selection arguments.");
+			if (pass != NULL)
+				pass->cmd_error(args, argidx, "Unexpected option in selection arguments.");
+			else
+				log_cmd_error("Unexpected option in selection arguments.");
+		}
 		select_stmt(design, args[argidx]);
 	}
 	while (work_stack.size() > 1) {
 		select_op_union(design, work_stack.front(), work_stack.back());
 		work_stack.pop_back();
 	}
-	design->selection_stack.push_back(work_stack.back());
+	if (work_stack.size() > 0)
+		design->selection_stack.push_back(work_stack.back());
+	else
+		design->selection_stack.push_back(RTLIL::Selection(false));
 }
 
 struct SelectPass : public Pass {

kernel/show.cc

@@ -36,7 +36,7 @@ struct ShowWorker
 	std::map<RTLIL::IdString, int> autonames;
 	int single_idx_count;
 
-	struct net_conn { std::set<std::string> in, out; int bits; };
+	struct net_conn { std::set<std::string> in, out; int bits; std::string color; };
 	std::map<std::string, net_conn> net_conn_map;
 
 	FILE *f;
@@ -47,6 +47,9 @@ struct ShowWorker
 	bool stretchIO;
 	int page_counter;
 
+	const std::vector<std::pair<std::string, RTLIL::Selection>> &color_selections;
+	const std::vector<std::pair<std::string, RTLIL::Selection>> &label_selections;
+
 	uint32_t xorshift32(uint32_t x) {
 		x ^= x << 13;
 		x ^= x >> 17;
@@ -61,6 +64,40 @@ struct ShowWorker
 		return stringf("colorscheme=\"dark28\", color=\"%d\", fontcolor=\"%d\"", currentColor%8+1);
 	}
 
+	std::string nextColor(std::string presetColor)
+	{
+		if (presetColor.empty())
+			return nextColor();
+		return presetColor;
+	}
+
+	std::string nextColor(RTLIL::SigSpec sig, std::string defaultColor)
+	{
+		sig.sort_and_unify();
+		for (auto &c : sig.chunks) {
+			if (c.wire != NULL)
+				for (auto &s : color_selections)
+					if (s.second.selected_members.count(module->name) > 0 && s.second.selected_members.at(module->name).count(c.wire->name) > 0)
+						return stringf("color=\"%s\", fontcolor=\"%d\"", s.first.c_str(), s.first.c_str());
+		}
+		return defaultColor;
+	}
+
+	std::string nextColor(RTLIL::SigSig &conn, std::string defaultColor)
+	{
+		return nextColor(conn.first, nextColor(conn.second, defaultColor));
+	}
+
+	std::string nextColor(RTLIL::SigSpec &sig)
+	{
+		return nextColor(sig, nextColor());
+	}
+
+	std::string nextColor(RTLIL::SigSig &conn)
+	{
+		return nextColor(conn, nextColor());
+	}
+
 	std::string widthLabel(int bits)
 	{
 		if (bits <= 1)
@@ -145,10 +182,12 @@ struct ShowWorker
 					label_string += stringf("<s%d> %d:%d - %d:%d |", i, pos, pos-c.width+1, c.offset+c.width-1, c.offset);
 					net_conn_map[net].in.insert(stringf("x%d:s%d", idx, i));
 					net_conn_map[net].bits = c.width;
+					net_conn_map[net].color = nextColor(sig, net_conn_map[net].color);
 				} else {
 					label_string += stringf("<s%d> %d:%d - %d:%d |", i, c.offset+c.width-1, c.offset, pos, pos-c.width+1);
 					net_conn_map[net].out.insert(stringf("x%d:s%d", idx, i));
 					net_conn_map[net].bits = c.width;
+					net_conn_map[net].color = nextColor(sig, net_conn_map[net].color);
 				}
 				pos -= c.width;
 			}
@@ -158,9 +197,9 @@ struct ShowWorker
 			if (!port.empty()) {
 				currentColor = xorshift32(currentColor);
 				if (driver)
-					code += stringf("%s:e -> x%d:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", port.c_str(), idx, nextColor().c_str(), widthLabel(sig.width).c_str());
+					code += stringf("%s:e -> x%d:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", port.c_str(), idx, nextColor(sig).c_str(), widthLabel(sig.width).c_str());
 				else
-					code += stringf("x%d:e -> %s:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", idx, port.c_str(), nextColor().c_str(), widthLabel(sig.width).c_str());
+					code += stringf("x%d:e -> %s:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", idx, port.c_str(), nextColor(sig).c_str(), widthLabel(sig.width).c_str());
 			}
 			if (node != NULL)
 				*node = stringf("x%d", idx);
@@ -173,6 +212,7 @@ struct ShowWorker
 				else
 					net_conn_map[net].out.insert(port);
 				net_conn_map[net].bits = sig.width;
+				net_conn_map[net].color = nextColor(sig, net_conn_map[net].color);
 			}
 			if (node != NULL)
 				*node = net;
@@ -202,8 +242,9 @@ struct ShowWorker
 			if (it.second->port_input || it.second->port_output)
 				shape = "octagon";
 			if (it.first[0] == '\\') {
-				fprintf(f, "n%d [ shape=%s, label=\"%s\" ];\n",
+				fprintf(f, "n%d [ shape=%s, label=\"%s\", %s, fontcolor=\"black\" ];\n",
-						id2num(it.first), shape, escape(it.first));
+						id2num(it.first), shape, escape(it.first),
+						nextColor(RTLIL::SigSpec(it.second), "color=\"black\"").c_str());
 				if (it.second->port_input)
 					all_sources.insert(stringf("n%d", id2num(it.first)));
 				else if (it.second->port_output)
@@ -294,10 +335,12 @@ struct ShowWorker
 
 			if (left_node[0] == 'x' && right_node[0] == 'x') {
 				currentColor = xorshift32(currentColor);
-				fprintf(f, "%s:e -> %s:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", left_node.c_str(), right_node.c_str(), nextColor().c_str(), widthLabel(conn.first.width).c_str());
+				fprintf(f, "%s:e -> %s:w [arrowhead=odiamond, arrowtail=odiamond, dir=both, %s, %s];\n", left_node.c_str(), right_node.c_str(), nextColor(conn).c_str(), widthLabel(conn.first.width).c_str());
 			} else {
 				net_conn_map[right_node].bits = conn.first.width;
+				net_conn_map[right_node].color = nextColor(conn, net_conn_map[right_node].color);
 				net_conn_map[left_node].bits = conn.first.width;
+				net_conn_map[left_node].color = nextColor(conn, net_conn_map[left_node].color);
 				if (left_node[0] == 'x') {
 					net_conn_map[right_node].in.insert(left_node);
 				} else if (right_node[0] == 'x') {
@@ -315,7 +358,7 @@ struct ShowWorker
 			currentColor = xorshift32(currentColor);
 			if (wires_on_demand.count(it.first) > 0) {
 				if (it.second.in.size() == 1 && it.second.out.size() == 1) {
-					fprintf(f, "%s:e -> %s:w [%s, %s];\n", it.second.in.begin()->c_str(), it.second.out.begin()->c_str(), nextColor().c_str(), widthLabel(it.second.bits).c_str());
+					fprintf(f, "%s:e -> %s:w [%s, %s];\n", it.second.in.begin()->c_str(), it.second.out.begin()->c_str(), nextColor(it.second.color).c_str(), widthLabel(it.second.bits).c_str());
 					continue;
 				}
 				if (it.second.in.size() == 0 || it.second.out.size() == 0)
@@ -324,16 +367,19 @@ struct ShowWorker
 					fprintf(f, "%s [ shape=point ];\n", it.first.c_str());
 			}
 			for (auto &it2 : it.second.in)
-				fprintf(f, "%s:e -> %s:w [%s, %s];\n", it2.c_str(), it.first.c_str(), nextColor().c_str(), widthLabel(it.second.bits).c_str());
+				fprintf(f, "%s:e -> %s:w [%s, %s];\n", it2.c_str(), it.first.c_str(), nextColor(it.second.color).c_str(), widthLabel(it.second.bits).c_str());
 			for (auto &it2 : it.second.out)
-				fprintf(f, "%s:e -> %s:w [%s, %s];\n", it.first.c_str(), it2.c_str(), nextColor().c_str(), widthLabel(it.second.bits).c_str());
+				fprintf(f, "%s:e -> %s:w [%s, %s];\n", it.first.c_str(), it2.c_str(), nextColor(it.second.color).c_str(), widthLabel(it.second.bits).c_str());
 		}
 
 		fprintf(f, "};\n");
 	}
 
-	ShowWorker(FILE *f, RTLIL::Design *design, std::vector<RTLIL::Design*> &libs, uint32_t colorSeed, bool genWidthLabels, bool stretchIO) :
+	ShowWorker(FILE *f, RTLIL::Design *design, std::vector<RTLIL::Design*> &libs, uint32_t colorSeed, bool genWidthLabels, bool stretchIO,
-			f(f), design(design), currentColor(colorSeed), genWidthLabels(genWidthLabels), stretchIO(stretchIO)
+			const std::vector<std::pair<std::string, RTLIL::Selection>> &color_selections,
+			const std::vector<std::pair<std::string, RTLIL::Selection>> &label_selections) :
+			f(f), design(design), currentColor(colorSeed), genWidthLabels(genWidthLabels), stretchIO(stretchIO),
+			color_selections(color_selections), label_selections(label_selections)
 	{
 		ct.setup_internals();
 		ct.setup_internals_mem();
@@ -394,6 +440,11 @@ struct ShowPass : public Pass {
 		log("    -prefix <prefix>\n");
 		log("        generate <prefix>.dot and <prefix>.ps instead of yosys-show.{dot,ps}\n");
 		log("\n");
+		log("    -color <color> <wire>\n");
+		log("        assign the specified color to the specified wire. The object can be\n");
+		log("        a single selection wildcard expressions or a saved set of objects in\n");
+		log("        the @<name> syntax (see \"help select\" for details).\n");
+		log("\n");
 		log("    -colors <seed>\n");
 		log("        Randomly assign colors to the wires. The integer argument is the seed\n");
 		log("        for the random number generator. Change the seed value if the colored\n");
@@ -418,6 +469,9 @@ struct ShowPass : public Pass {
 		log_header("Generating Graphviz representation of design.\n");
 		log_push();
 
+		std::vector<std::pair<std::string, RTLIL::Selection>> color_selections;
+		std::vector<std::pair<std::string, RTLIL::Selection>> label_selections;
+
 		std::string format;
 		std::string viewer_exe;
 		std::string prefix = "yosys-show";
@@ -443,6 +497,24 @@ struct ShowPass : public Pass {
 				prefix = args[++argidx];
 				continue;
 			}
+			if (arg == "-color" && argidx+2 < args.size()) {
+				std::pair<std::string, RTLIL::Selection> data;
+				data.first = args[++argidx], argidx++;
+				handle_extra_select_args(this, args, argidx, argidx+1, design);
+				data.second = design->selection_stack.back();
+				design->selection_stack.pop_back();
+				color_selections.push_back(data);
+				continue;
+			}
+			if (arg == "-label" && argidx+2 < args.size() && false) {
+				std::pair<std::string, RTLIL::Selection> data;
+				data.first = args[++argidx], argidx++;
+				handle_extra_select_args(this, args, argidx, argidx+1, design);
+				data.second = design->selection_stack.back();
+				design->selection_stack.pop_back();
+				label_selections.push_back(data);
+				continue;
+			}
 			if (arg == "-colors" && argidx+1 < args.size()) {
 				colorSeed = atoi(args[++argidx].c_str());
 				continue;
@@ -500,7 +572,7 @@ struct ShowPass : public Pass {
 				delete lib;
 			log_cmd_error("Can't open dot file `%s' for writing.\n", dot_file.c_str());
 		}
-		ShowWorker worker(f, design, libs, colorSeed, flag_width, flag_stretch);
+		ShowWorker worker(f, design, libs, colorSeed, flag_width, flag_stretch, color_selections, label_selections);
 		fclose(f);
 
 		for (auto lib : libs)