From 04727c7e0fb4c00b38999da192e4ada2a6f9474a Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Sat, 2 Aug 2014 18:58:40 +0200
Subject: No implicit conversion from IdString to anything else

---
 backends/blif/blif.cc           |  2 +-
 backends/btor/btor.cc           |  2 +-
 backends/edif/edif.cc           |  4 ++--
 backends/spice/spice.cc         |  2 +-
 kernel/log.cc                   |  2 +-
 kernel/register.cc              |  4 ++--
 kernel/rtlil.cc                 | 28 ++++++++++++++--------------
 kernel/rtlil.h                  | 10 +++++-----
 passes/abc/abc.cc               |  2 +-
 passes/cmds/design.cc           |  2 +-
 passes/cmds/select.cc           |  4 ++--
 passes/cmds/show.cc             |  2 +-
 passes/fsm/fsm_export.cc        |  2 +-
 passes/memory/memory_collect.cc |  2 +-
 passes/techmap/extract.cc       |  4 ++--
 passes/techmap/techmap.cc       |  2 +-
 16 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/backends/blif/blif.cc b/backends/blif/blif.cc
index ecde8b5a..5daab669 100644
--- a/backends/blif/blif.cc
+++ b/backends/blif/blif.cc
@@ -363,7 +363,7 @@ struct BlifBackend : public Backend {
 		if (top_module_name.empty())
 			for (auto & mod_it:design->modules_)
 				if (mod_it.second->get_bool_attribute("\\top"))
-					top_module_name = mod_it.first;
+					top_module_name = mod_it.first.str();
 
 		fprintf(f, "# Generated by %s\n", yosys_version_str);
 
diff --git a/backends/btor/btor.cc b/backends/btor/btor.cc
index 201be0cf..a81d8f15 100644
--- a/backends/btor/btor.cc
+++ b/backends/btor/btor.cc
@@ -968,7 +968,7 @@ struct BtorBackend : public Backend {
 		if (top_module_name.empty())
 			for (auto & mod_it:design->modules_)
 				if (mod_it.second->get_bool_attribute("\\top"))
-					top_module_name = mod_it.first;
+					top_module_name = mod_it.first.str();
 
 		fprintf(f, "; Generated by %s\n", yosys_version_str);
 		fprintf(f, ";  %s developed and maintained by Clifford Wolf <clifford@clifford.at>\n", yosys_version_str);
diff --git a/backends/edif/edif.cc b/backends/edif/edif.cc
index bf1efc4a..ecdfaabf 100644
--- a/backends/edif/edif.cc
+++ b/backends/edif/edif.cc
@@ -126,7 +126,7 @@ struct EdifBackend : public Backend {
 		if (top_module_name.empty())
 			for (auto & mod_it:design->modules_)
 				if (mod_it.second->get_bool_attribute("\\top"))
-					top_module_name = mod_it.first;
+					top_module_name = mod_it.first.str();
 
 		for (auto module_it : design->modules_)
 		{
@@ -135,7 +135,7 @@ struct EdifBackend : public Backend {
 				continue;
 
 			if (top_module_name.empty())
-				top_module_name = module->name;
+				top_module_name = module->name.str();
 
 			if (module->processes.size() != 0)
 				log_error("Found unmapped processes in module %s: unmapped processes are not supported in EDIF backend!\n", RTLIL::id2cstr(module->name));
diff --git a/backends/spice/spice.cc b/backends/spice/spice.cc
index a445e9cc..be0086ff 100644
--- a/backends/spice/spice.cc
+++ b/backends/spice/spice.cc
@@ -172,7 +172,7 @@ struct SpiceBackend : public Backend {
 		if (top_module_name.empty())
 			for (auto & mod_it:design->modules_)
 				if (mod_it.second->get_bool_attribute("\\top"))
-					top_module_name = mod_it.first;
+					top_module_name = mod_it.first.str();
 
 		fprintf(f, "* SPICE netlist generated by %s\n", yosys_version_str);
 		fprintf(f, "\n");
diff --git a/kernel/log.cc b/kernel/log.cc
index 01f6207e..81cc26da 100644
--- a/kernel/log.cc
+++ b/kernel/log.cc
@@ -215,7 +215,7 @@ const char *log_signal(const RTLIL::SigSpec &sig, bool autoint)
 
 const char *log_id(RTLIL::IdString str)
 {
-	const char *p = str;
+	const char *p = str.c_str();
 	log_assert(RTLIL::IdString::global_refcount_storage_[str.index_] > 1);
 	if (p[0] == '\\' && p[1] != '$' && p[1] != 0)
 		return p+1;
diff --git a/kernel/register.cc b/kernel/register.cc
index 4d204069..868dbb94 100644
--- a/kernel/register.cc
+++ b/kernel/register.cc
@@ -240,7 +240,7 @@ void Pass::call_on_selection(RTLIL::Design *design, const RTLIL::Selection &sele
 void Pass::call_on_module(RTLIL::Design *design, RTLIL::Module *module, std::string command)
 {
 	std::string backup_selected_active_module = design->selected_active_module;
-	design->selected_active_module = module->name;
+	design->selected_active_module = module->name.str();
 	design->selection_stack.push_back(RTLIL::Selection(false));
 	design->selection_stack.back().select(module);
 
@@ -253,7 +253,7 @@ void Pass::call_on_module(RTLIL::Design *design, RTLIL::Module *module, std::str
 void Pass::call_on_module(RTLIL::Design *design, RTLIL::Module *module, std::vector<std::string> args)
 {
 	std::string backup_selected_active_module = design->selected_active_module;
-	design->selected_active_module = module->name;
+	design->selected_active_module = module->name.str();
 	design->selection_stack.push_back(RTLIL::Selection(false));
 	design->selection_stack.back().select(module);
 
diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 9ee8123f..2838449b 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -286,7 +286,7 @@ void RTLIL::Design::check()
 	for (auto &it : modules_) {
 		log_assert(this == it.second->design);
 		log_assert(it.first == it.second->name);
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
+		log_assert(!it.first.empty());
 		it.second->check();
 	}
 #endif
@@ -499,7 +499,7 @@ namespace {
 
 		void check()
 		{
-			if (cell->type[0] != '$' || cell->type.substr(0, 3) == "$__" || cell->type.substr(0, 8) == "$paramod" ||
+			if (cell->type.substr(0, 1) != "$" || cell->type.substr(0, 3) == "$__" || cell->type.substr(0, 8) == "$paramod" ||
 					cell->type.substr(0, 9) == "$verific$" || cell->type.substr(0, 7) == "$array:" || cell->type.substr(0, 8) == "$extern:")
 				return;
 
@@ -818,38 +818,38 @@ void RTLIL::Module::check()
 	for (auto &it : wires_) {
 		log_assert(this == it.second->module);
 		log_assert(it.first == it.second->name);
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
+		log_assert(!it.first.empty());
 		log_assert(it.second->width >= 0);
 		log_assert(it.second->port_id >= 0);
 		for (auto &it2 : it.second->attributes) {
-			log_assert(it2.first.size() > 0 && (it2.first[0] == '\\' || it2.first[0] == '$'));
+			log_assert(!it2.first.empty());
 		}
 	}
 
 	for (auto &it : memories) {
 		log_assert(it.first == it.second->name);
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
+		log_assert(!it.first.empty());
 		log_assert(it.second->width >= 0);
 		log_assert(it.second->size >= 0);
 		for (auto &it2 : it.second->attributes) {
-			log_assert(it2.first.size() > 0 && (it2.first[0] == '\\' || it2.first[0] == '$'));
+			log_assert(!it2.first.empty());
 		}
 	}
 
 	for (auto &it : cells_) {
 		log_assert(this == it.second->module);
 		log_assert(it.first == it.second->name);
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
-		log_assert(it.second->type.size() > 0 && (it.second->type[0] == '\\' || it.second->type[0] == '$'));
+		log_assert(!it.first.empty());
+		log_assert(!it.second->type.empty());
 		for (auto &it2 : it.second->connections()) {
-			log_assert(it2.first.size() > 0 && (it2.first[0] == '\\' || it2.first[0] == '$'));
+			log_assert(!it2.first.empty());
 			it2.second.check();
 		}
 		for (auto &it2 : it.second->attributes) {
-			log_assert(it2.first.size() > 0 && (it2.first[0] == '\\' || it2.first[0] == '$'));
+			log_assert(!it2.first.empty());
 		}
 		for (auto &it2 : it.second->parameters) {
-			log_assert(it2.first.size() > 0 && (it2.first[0] == '\\' || it2.first[0] == '$'));
+			log_assert(!it2.first.empty());
 		}
 		InternalCellChecker checker(this, it.second);
 		checker.check();
@@ -857,7 +857,7 @@ void RTLIL::Module::check()
 
 	for (auto &it : processes) {
 		log_assert(it.first == it.second->name);
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
+		log_assert(!it.first.empty());
 		// FIXME: More checks here..
 	}
 
@@ -868,7 +868,7 @@ void RTLIL::Module::check()
 	}
 
 	for (auto &it : attributes) {
-		log_assert(it.first.size() > 0 && (it.first[0] == '\\' || it.first[0] == '$'));
+		log_assert(!it.first.empty());
 	}
 #endif
 }
@@ -1597,7 +1597,7 @@ void RTLIL::Cell::check()
 
 void RTLIL::Cell::fixup_parameters(bool set_a_signed, bool set_b_signed)
 {
-	if (type[0] != '$' || type.substr(0, 2) == "$_" || type.substr(0, 8) == "$paramod" ||
+	if (type.substr(0, 1) != "$" || type.substr(0, 2) == "$_" || type.substr(0, 8) == "$paramod" ||
 			type.substr(0, 9) == "$verific$" || type.substr(0, 7) == "$array:" || type.substr(0, 8) == "$extern:")
 		return;
 
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 6529603e..502969a1 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -162,11 +162,7 @@ namespace RTLIL
 			*this = id;
 		}
 
-		const char*c_str() const {
-			return global_id_storage_.at(index_);
-		}
-
-		operator const char*() const {
+		const char *c_str() const {
 			return global_id_storage_.at(index_);
 		}
 
@@ -193,6 +189,10 @@ namespace RTLIL
 			return c_str()[i];
 		}
 
+		char operator[](size_t i) const {
+			return c_str()[i];
+		}
+
 		std::string substr(size_t pos = 0, size_t len = std::string::npos) const {
 			if (len == std::string::npos || len >= strlen(c_str() + pos))
 				return std::string(c_str() + pos);
diff --git a/passes/abc/abc.cc b/passes/abc/abc.cc
index 19664357..77419e61 100644
--- a/passes/abc/abc.cc
+++ b/passes/abc/abc.cc
@@ -303,7 +303,7 @@ static void handle_loops()
 					id1 = id2;
 				else if (edges[id1].size() > edges[id2].size())
 					continue;
-				else if (w1->name > w2->name)
+				else if (w2->name < w1->name)
 					id1 = id2;
 			}
 
diff --git a/passes/cmds/design.cc b/passes/cmds/design.cc
index 260e7b5d..9f800c31 100644
--- a/passes/cmds/design.cc
+++ b/passes/cmds/design.cc
@@ -192,7 +192,7 @@ struct DesignPass : public Pass {
 
 			for (auto mod : copy_src_modules)
 			{
-				std::string trg_name = as_name.empty() ? std::string(mod->name) : RTLIL::escape_id(as_name);
+				std::string trg_name = as_name.empty() ? mod->name.str() : RTLIL::escape_id(as_name);
 
 				if (copy_to_design->modules_.count(trg_name))
 					delete copy_to_design->modules_.at(trg_name);
diff --git a/passes/cmds/select.cc b/passes/cmds/select.cc
index b4f4d26a..2d49e85e 100644
--- a/passes/cmds/select.cc
+++ b/passes/cmds/select.cc
@@ -1080,7 +1080,7 @@ struct SelectPass : public Pass {
 				RTLIL::IdString mod_name = RTLIL::escape_id(args[++argidx]);
 				if (design->modules_.count(mod_name) == 0)
 					log_cmd_error("No such module: %s\n", id2cstr(mod_name));
-				design->selected_active_module = mod_name;
+				design->selected_active_module = mod_name.str();
 				got_module = true;
 				continue;
 			}
@@ -1304,7 +1304,7 @@ struct CdPass : public Pass {
 			if (design->modules_.count(design->selected_active_module) > 0)
 				module = design->modules_.at(design->selected_active_module);
 			if (module != NULL && module->cells_.count(modname) > 0)
-				modname = module->cells_.at(modname)->type;
+				modname = module->cells_.at(modname)->type.str();
 		}
 
 		if (design->modules_.count(modname) > 0) {
diff --git a/passes/cmds/show.cc b/passes/cmds/show.cc
index bbc0ff44..cbc4725f 100644
--- a/passes/cmds/show.cc
+++ b/passes/cmds/show.cc
@@ -322,7 +322,7 @@ struct ShowWorker
 				else if (it.second->port_output)
 					all_sinks.insert(stringf("n%d", id2num(it.first)));
 			} else {
-				wires_on_demand[stringf("n%d", id2num(it.first))] = it.first;
+				wires_on_demand[stringf("n%d", id2num(it.first))] = it.first.str();
 			}
 		}
 
diff --git a/passes/fsm/fsm_export.cc b/passes/fsm/fsm_export.cc
index 97ccf91e..cb762dc1 100644
--- a/passes/fsm/fsm_export.cc
+++ b/passes/fsm/fsm_export.cc
@@ -61,7 +61,7 @@ void write_kiss2(struct RTLIL::Module *module, struct RTLIL::Cell *cell, std::st
 		kiss_name.assign(attr_it->second.decode_string());
 	}
 	else {
-		kiss_name.assign(module->name);
+		kiss_name.assign(module->name.str());
 		kiss_name.append('-' + cell->name.str() + ".kiss2");
 	}
 
diff --git a/passes/memory/memory_collect.cc b/passes/memory/memory_collect.cc
index 471a7d53..9c670f00 100644
--- a/passes/memory/memory_collect.cc
+++ b/passes/memory/memory_collect.cc
@@ -126,7 +126,7 @@ static void handle_memory(RTLIL::Module *module, RTLIL::Memory *memory)
 	}
 
 	std::stringstream sstr;
-	sstr << "$mem$" << memory->name << "$" << (autoidx++);
+	sstr << "$mem$" << memory->name.str() << "$" << (autoidx++);
 
 	RTLIL::Cell *mem = module->addCell(sstr.str(), "$mem");
 	mem->parameters["\\MEMID"] = RTLIL::Const(memory->name.str());
diff --git a/passes/techmap/extract.cc b/passes/techmap/extract.cc
index 06af2923..985d51e5 100644
--- a/passes/techmap/extract.cc
+++ b/passes/techmap/extract.cc
@@ -240,8 +240,8 @@ namespace
 
 					if (sig_bit_ref.count(bit) == 0) {
 						bit_ref_t &bit_ref = sig_bit_ref[bit];
-						bit_ref.cell = cell->name;
-						bit_ref.port = conn.first;
+						bit_ref.cell = cell->name.str();
+						bit_ref.port = conn.first.str();
 						bit_ref.bit = i;
 					}
 
diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc
index 374fa9bf..c639cc48 100644
--- a/passes/techmap/techmap.cc
+++ b/passes/techmap/techmap.cc
@@ -155,7 +155,7 @@ struct TechmapWorker
 		if (!flatten_mode)
 			for (auto &it : tpl->cells_)
 				if (it.first == "\\_TECHMAP_REPLACE_") {
-					orig_cell_name = cell->name;
+					orig_cell_name = cell->name.str();
 					module->rename(cell, stringf("$techmap%d", autoidx++) + cell->name.str());
 					break;
 				}
-- 
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