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#ifndef __SIM_API_H
#define __SIM_API_H
#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
#include <map>
enum SIM_CMD { RESET, STEP, UPDATE, POKE, PEEK, GETID, SETCLK, FIN };
template<class T> struct sim_data_t {
std::vector<T> resets;
std::vector<T> inputs;
std::vector<T> outputs;
std::vector<T> signals;
std::map<std::string, size_t> signal_map;
std::map<std::string, T> clk_map;
};
template <class T> class sim_api_t {
public:
void tick() {
static bool is_reset = false;
// First, Generates output tokens (in hex)
generate_tokens();
if (is_reset) {
start();
is_reset = false;
}
// Next, handle commands from the testers
bool exit = false;
do {
size_t cmd;
std::cin >> std::dec >> cmd;
switch ((SIM_CMD) cmd) {
case RESET:
reset(); is_reset = true; exit = true; break;
case STEP:
consume_tokens();
step(); exit = true; break;
case UPDATE:
consume_tokens();
update(); exit = true; break;
case POKE: poke(); break;
case PEEK: peek(); break;
case GETID: getid(); break;
case SETCLK: setclk(); break;
case FIN: finish(); exit = true; break;
default: break;
}
} while (!exit);
}
private:
virtual void reset() = 0;
virtual void start() = 0;
virtual void finish() = 0;
virtual void update() = 0;
virtual void step() = 0;
// Consumes input tokens (in hex)
virtual void put_value(T& sig) = 0;
// Generate output tokens (in hex)
virtual void get_value(T& sig) = 0;
// Find a signal of path
virtual int search(std::string& path) { return -1; }
void poke() {
size_t id;
std::cin >> std::dec >> id;
T obj = sim_data.signals[id];
if (obj) {
put_value(obj);
} else {
std::cout << "Cannot find the object of id = " << id << std::endl;
finish();
exit(0);
}
}
void peek() {
size_t id;
std::cin >> std::dec >> id;
T obj = sim_data.signals[id];
if (obj) {
get_value(obj);
} else {
std::cout << "Cannot find the object of id = " << id << std::endl;
finish();
exit(0);
}
}
void getid() {
std::string wire;
std::cin >> wire;
std::map<std::string, size_t>::iterator it = sim_data.signal_map.find(wire);
if (it != sim_data.signal_map.end()) {
std::cerr << it->second << std::endl;
} else {
int id = search(wire);
if (id < 0) {
std::cout << "Cannot find the object, " << wire<< std::endl;
finish();
exit(0);
}
std::cerr << id << std::endl;
}
}
void setclk() {
std::string clkname;
std::cin >> clkname;
typename std::map<std::string, T>::iterator it = sim_data.clk_map.find(clkname);
if (it != sim_data.clk_map.end()) {
put_value(it->second);
} else {
std::cout << "Cannot find " << clkname << std::endl;
}
}
void consume_tokens() {
for (size_t i = 0 ; i < sim_data.inputs.size() ; i++) {
put_value(sim_data.inputs[i]);
}
}
void generate_tokens() {
for (size_t i = 0 ; i < sim_data.outputs.size() ; i++) {
get_value(sim_data.outputs[i]);
}
}
protected:
sim_data_t<T> sim_data;
void read_signal_map(std::string filename) {
std::ifstream file(filename.c_str());
if (!file) {
std::cout << "Cannot open " << filename << std::endl;
finish();
exit(0);
}
std::string line;
size_t id = 0;
while (std::getline(file, line)) {
std::istringstream iss(line);
std::string path;
size_t width, n;
iss >> path >> width >> n;
sim_data.signal_map[path] = id;
id += n;
}
}
};
#endif //__SIM_API_H
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