input.cpp

#include <cstdlib>
#include <iostream>
#include <string>
#include <map>
#include <vector>

#include "input.h"
#include "nodeimpl.h"
#include "reset.h"

using namespace std;
using namespace chdl;

map <string, vector<node>> inputs;

static void clear_inputs() { inputs.clear(); }
CHDL_REGISTER_RESET(clear_inputs);

class inputimpl : public nodeimpl {
  public:
    inputimpl(string n, int i=-1): nodeimpl(), name(n), pos(i) {}
    
    bool eval(cdomain_handle_t) {
      cerr << "Attempted to simulate a design with unassociated inputs."
           << endl;
      abort();
    }

    void print(ostream &) {}
    void print_vl(ostream &) {}

  private:
    string name;         // Name of input in input map
    int pos;             // Position in vector in input map. -1 for no name
};

node chdl::Input(std::string name) {
  inputimpl *n = new inputimpl(name, -1);
  inputs[name] = vector<node>(1, n->id);
  return node(n->id);
}

void chdl::print_inputs_vl_head(std::ostream &out) {
  for (auto i : inputs)
    out << ',' << endl << "  " << i.first;
}

void chdl::print_inputs_vl_body(std::ostream &out) {
  for (auto in : inputs) {
    out << "  input ";
    if (in.second.size() > 1)
      out << '[' << in.second.size()-1 << ":0] ";
    out << in.first << ';' << endl;
    if (in.second.size() > 1) {
      for (unsigned i = 0; i < in.second.size(); ++i) {
        out << "  assign __x" << in.second[i] << " = "
            << in.first << '[' << i << "];" << endl;
      }
    } else {
      out << "  assign __x" << in.second[0] << " = "
          << in.first << ';' << endl;
      }
  }
}

void chdl::print_input_nodes(std::ostream &out) {
  for (auto in : inputs) {
    out << "  " << in.first;
    for (unsigned i = 0; i < in.second.size(); ++i)
      out << ' ' << in.second[i];
    out << endl;
  }
}

void chdl::get_input_nodes(std::set<nodeid_t> &s) {
  for (auto in : inputs)
    for (unsigned i = 0; i < in.second.size(); ++i)
      s.insert(in.second[i]);
}

vector<node> chdl::input_internal(std::string name, unsigned n) {
  inputs[name] = vector<node>();

  for (unsigned i = 0; i < n; ++i) {
    inputimpl *n = new inputimpl(name, i);
    inputs[name].push_back(n->id);
  }

  return inputs[name];
}