87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
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#include "circuit.h"
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Gate* Gates;
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std::vector<int> circuit_inputs;
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int circuit_output;
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void read_verilog_from_file(const char *filename) {
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using namespace std;
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ifstream file(filename);
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cmatch m;
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string line;
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// all inputs and outputs
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cout << "I/O:" << endl;
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getline(file, line);
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while(regex_search(line.c_str(), m, regex("[x|y]\\d+"))) {
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cout << m.str(0) << " ";
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line = m.suffix().str();
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}
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cout << endl;
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// skip detailed I/O
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getline(file, line);
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getline(file, line);
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int maxvar = 0;
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// all wires
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cout << "wires: " << endl;
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getline(file, line);
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while(regex_search(line.c_str(), m, regex("n\\d+"))) {
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string wire = m.str(0);
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cout << wire << " ";
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maxvar = max(maxvar, std::atoi(wire.substr(1).c_str()));
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line = m.suffix().str();
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}
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cout << endl;
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assert(maxvar);
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cout << "maxvar: " << maxvar << endl;
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// allcate for global gates table
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Gates = new Gate[maxvar + 1];
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while(true) {
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getline(file, line);
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if(line == "endmodule") break;
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cout << line << endl;
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std::vector<int> vars;
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string copy = line;
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while(regex_search(copy.c_str(), m, regex("~?[xyn]\\d+"))) {
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string str = m.str(0);
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int sign = 1;
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if(str[0] == '~') {
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sign = -1;
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str = str.substr(1);
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}
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// remove x , y or n
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str = str.substr(1);
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vars.push_back(sign * atoi(str.c_str()));
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copy = m.suffix().str();
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}
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if(regex_match(line.c_str(), m, regex(" assign ~?[xyn]\\d+ = ~?[xyn]\\d+ (& ~?[xyn]\\d+)+ ;"))) {
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cout << "MATCH AND: " ;
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} else if(regex_match(line.c_str(), m, regex(" assign ~?[xyn]\\d+ = ~?[xyn]\\d+ (\\^ ~?[xyn]\\d+)+ (\\^ 1\\'b0)+ ;"))) {
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cout << "MATCH XOR: " ;
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} else if(regex_match(line.c_str(), m, regex(" assign ~?[xyn]\\d+ = ~?[xyn]\\d+ (\\| ~?[xyn]\\d+)+ ;"))) {
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cout << "MATCH OR: " ;
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} else if(regex_match(line.c_str(), m, regex(" assign ~?y\\d+ = ~?[xyn]\\d+ ;"))) {
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cout << "MATCH OUTPUT: " ;
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} else {
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cout << "MATCH MAJ: " ;
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}
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for(auto& var : vars) {
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cout << var << " ";
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}
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cout << endl;
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}
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}
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