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frontend/json: Refactor port importer

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-06-13 10:06:31 +02:00
parent 0aec418ee3
commit a34c790b6a
1 changed files with 32 additions and 37 deletions
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69
frontend/json/jsonparse.cc
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@ -341,24 +341,25 @@ void json_import_cell_params(Design *design, string &modname, CellInfo *cell,
modname.c_str());
}
void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
string &port_name, JsonNode *dir_node,
JsonNode *wire_group_node)
template <typename F>
void json_import_ports(Design *design, const string &modname,
const string &obj_name, const string &port_name,
JsonNode *dir_node, JsonNode *wire_group_node, F visitor)
{
// Examine and connect a single port of the given cell to its nets,
// generating them as necessary
// Examine a port of a cell or the design. For every bit of the port,
// the connected net will be processed and `visitor` will be called
// with (PortType dir, std::string name, NetInfo *net)
assert(dir_node);
if (json_debug)
log_info(" Examining port %s, node %s\n", port_name.c_str(),
cell->name.c_str());
obj_name.c_str());
if (!wire_group_node)
log_error("JSON no connection match "
"for port_direction \'%s\' of node \'%s\' "
"in module \'%s\'\n",
port_name.c_str(), cell->name.c_str(), modname.c_str());
port_name.c_str(), obj_name.c_str(), modname.c_str());
assert(wire_group_node);
@ -377,7 +378,7 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
else
log_error("JSON unknown port direction \'%s\' in node \'%s\' "
"of module \'%s\'\n",
dir_node->data_string.c_str(), cell->name.c_str(),
dir_node->data_string.c_str(), obj_name.c_str(),
modname.c_str());
//
// Find an update, or create a net to connect
@ -398,18 +399,12 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
// There is/are no connections to this port.
//
// Create the port, but leave the net NULL
PortInfo this_port;
//
this_port.name = port_info.name;
this_port.type = port_info.type;
this_port.net = NULL;
cell->ports[this_port.name] = this_port;
visitor(port_info.type, port_info.name, nullptr);
if (json_debug)
log_info(" Port \'%s\' has no connection in \'%s\'\n",
this_port.name.c_str(), cell->name.c_str());
port_info.name.c_str(), obj_name.c_str());
} else
for (int index = 0; index < wire_group_node->data_array.size();
@ -417,13 +412,10 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
//
JsonNode *wire_node;
PortInfo this_port;
PortRef port_ref;
bool const_input = false;
IdString net_id;
//
wire_node = wire_group_node->data_array[index];
port_ref.cell = cell;
//
// Pick a name for this port
if (is_bus)
@ -433,8 +425,6 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
this_port.name = port_info.name;
this_port.type = port_info.type;
port_ref.port = this_port.name;
if (wire_node->type == 'N') {
int net_num;
@ -500,7 +490,7 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
"\'%s\' of port \'%s\' "
"in cell \'%s\' of module \'%s\'\n",
wire_node->data_string.c_str(),
port_name.c_str(), cell->name.c_str(),
port_name.c_str(), obj_name.c_str(),
modname.c_str());
} else
@ -511,17 +501,8 @@ void json_import_cell_ports(Design *design, string &modname, CellInfo *cell,
if (json_debug)
log_info(" Inserting port \'%s\' into cell \'%s\'\n",
this_port.name.c_str(), cell->name.c_str());
this_port.net = this_net;
cell->ports[this_port.name] = this_port;
if (this_port.type == PORT_OUT) {
assert(this_net->driver.cell == NULL);
this_net->driver = port_ref;
} else
this_net->users.push_back(port_ref);
this_port.name.c_str(), obj_name.c_str());
visitor(this_port.type, this_port.name, this_net);
if (design->nets.count(this_net->name) == 0)
design->nets[this_net->name] = this_net;
@ -632,8 +613,23 @@ void json_import_cell(Design *design, string modname, JsonNode *cell_node,
dir_node = pdir_node->data_dict.at(port_name);
wire_group_node = connections->data_dict.at(port_name);
json_import_cell_ports(design, modname, cell, port_name, dir_node,
wire_group_node);
json_import_ports(
design, modname, cell->name, port_name, dir_node,
wire_group_node,
[cell](PortType type, const std::string &name, NetInfo *net) {
cell->ports[name] = PortInfo{name, net, type};
PortRef pr;
pr.cell = cell;
pr.port = name;
if (net != nullptr) {
if (type == PORT_IN) {
net->users.push_back(pr);
} else if (type == PORT_OUT) {
assert(net->driver.cell == nullptr);
net->driver = pr;
}
}
});
}
design->cells[cell->name] = cell;
@ -683,7 +679,6 @@ static void insert_iobuf(Design *design, NetInfo *net, PortType type,
ref.cell = iobuf;
ref.port = "I";
net2->users.push_back(ref);
}
iobuf->ports["O"] = PortInfo{"O", net, PORT_OUT};
assert(net->driver.cell == nullptr);