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-rw-r--r--passes/cmds/select.cc31
1 files changed, 24 insertions, 7 deletions
diff --git a/passes/cmds/select.cc b/passes/cmds/select.cc
index 967b31fe..e4e12b84 100644
--- a/passes/cmds/select.cc
+++ b/passes/cmds/select.cc
@@ -705,6 +705,20 @@ void handle_extra_select_args(Pass *pass, std::vector<std::string> args, size_t
design->selection_stack.push_back(RTLIL::Selection(false));
}
+std::string list_nonopt_args(std::vector<std::string> args)
+{
+ size_t argidx;
+ std::string result = "";
+ for (argidx = 1; argidx < args.size(); argidx++)
+ {
+ std::string arg = args[argidx];
+ if (arg.size() > 0 && arg[0] == '-')
+ continue;
+ result += arg + " ";
+ }
+ return result;
+}
+
struct SelectPass : public Pass {
SelectPass() : Pass("select", "modify and view the list of selected objects") { }
virtual void help()
@@ -731,15 +745,18 @@ struct SelectPass : public Pass {
log("\n");
log(" -set <name>\n");
log(" do not modify the current selection. instead save the new selection\n");
- log(" under the given name (see @<name> below).\n");
+ log(" under the given name (see @<name> below). to save the current selection,\n");
+ log(" use \"select -set <name> %%\"\n");
log("\n");
log(" -assert-none\n");
- log(" asserts that the given selection is empty. i.e. produce an error if\n");
- log(" any object matching the selection is found.\n");
+ log(" do not modify the current selection. instead assert that the given\n");
+ log(" selection is empty. i.e. produce an error if any object matching the\n");
+ log(" selection is found.\n");
log("\n");
log(" -assert-any\n");
- log(" asserts that the given selection is non-empty. i.e. produce an error\n");
- log(" if no object matching the selection is found.\n");
+ log(" do not modify the current selection. instead assert that the given\n");
+ log(" selection is non-empty. i.e. produce an error if no object matching\n");
+ log(" the selection is found.\n");
log("\n");
log(" -list\n");
log(" list all objects in the current selection\n");
@@ -1047,7 +1064,7 @@ struct SelectPass : public Pass {
if (work_stack.size() == 0)
log_cmd_error("No selection to check.\n");
if (!work_stack.back().empty())
- log_error("Assertation failed: selection is not empty.\n");
+ log_error("Assertation failed: selection is not empty: %s\n",list_nonopt_args(args).c_str());
return;
}
@@ -1056,7 +1073,7 @@ struct SelectPass : public Pass {
if (work_stack.size() == 0)
log_cmd_error("No selection to check.\n");
if (work_stack.back().empty())
- log_error("Assertation failed: selection is empty.\n");
+ log_error("Assertation failed: selection is empty: %s\n",list_nonopt_args(args).c_str());
return;
}