#include #include #include #include #include using namespace std; /*Here is the custom interpreter in C++(Coding in the hard way). As you can see lots of functions especially string and eval functions has been written fully customly. C++ doesn't serve important functions but let you to write whatever you want to want, inshaAllah. I couldn't publish it on the time, because I didn't have time to code and I have rewrited some algorithms. That is why I am late. I hope you like it.*/ /* Here is what you can do: 1 - You can define more than one variable in the same statement and also you can assign values of variables too. 2 - You can make more than one assignment operations in the same statement with putting comma between operations. 3 - You can print any mathematical operations based on variables or numbers. 4 - You can print a line with adding variables with + operator. */ /*Some examples: svar number = "145", boolean = True, first = "Joseph"; svar second; second = "Hardrock", number = 14; print first + " " + second; print number*5-7/4+5-6%5+1-60; print boolean;*/ //eval() function ;) string leftOperand(string line, size_t pos); string rightOperand(string line, size_t pos); string eval(string originalLine, int lineNumber); //assign operations void assignmentThings(map & Variables ,string line, int lineNumber); //non-ready string functions string removeChar(string sentence, char value); string removeWithoutString(string sentence, char value); bool checkForString(string sentence, string val); string replace(string val,string sentence, string replace); vector splitWithAChar(string sentence, char val); bool checkForMapObject(vector operations, string look); bool checkForSeriesOfCharacters(string val, string look); bool checkForSeriesOfCharacters2(string val, string look); bool checkForAlphaCharactersInAString(string line); //print keyword which supports concaneting with '+' string replaceVariables(string line, map Variables); int printThings(string line, map Variables, int lineNumber); //svar keyword for defining variables bool IsVariable(string line); map svarThings(string line, int lineNumber); //Writing code lines into a file and reading them. Just for fun! int NumberOfLines(); vector Lines(int numberOfLines); int main() { try { int nOfLines = NumberOfLines(); vector lines = Lines(nOfLines); map Variables; for (size_t i = 0; i < nOfLines - 1; i++) { if (checkForString(lines[i], "svar")) { map temp = svarThings(lines[i], i + 1); for (auto item : temp) { Variables.insert(make_pair(item.first,item.second)); } } assignmentThings(Variables, lines[i], i+1); printThings(lines[i], Variables, i+1); } } catch (exception & ex) { cout << ex.what() << endl; } return 0; } string leftOperand(string line, size_t pos) { for (size_t i = pos - 1; i >= 0; i--) { if (i == 0) { string left(line.begin(), line.begin() + pos); return left; } else { if (line[i] == '+' || line[i] == '-' || line[i] == '*' || line[i] == '/' || line[i] == '%') { string left(line.begin() + i + 1, line.begin() + pos); return left; } } } } string rightOperand(string line, size_t pos) { for (size_t i = pos + 1; i < line.length(); i++) { if (i == line.length() - 1) { string right(line.begin() + pos + 1, line.begin() + line.length()); return right; } else { if (line[i] == '+' || line[i] == '-' || line[i] == '*' || line[i] == '/' || line[i] == '%') { string right(line.begin() + pos + 1, line.begin() + i); return right; } } } } string eval(string originalLine, int lineNumber) { try { !isdigit(originalLine[0]) && originalLine[0] != '-' ? throw invalid_argument(""):0; while (checkForSeriesOfCharacters(originalLine, "*/%")) { for (size_t i = 0; i < originalLine.length();) { if (originalLine[i] == '*') { originalLine = replace(leftOperand(originalLine, i) + originalLine[i] + rightOperand(originalLine, i), originalLine, to_string(stoi(leftOperand(originalLine, i)) * stoi(rightOperand(originalLine, i)))); i = 0; continue; } if (originalLine[i] == '/') { originalLine = replace(leftOperand(originalLine, i) + originalLine[i] + rightOperand(originalLine, i), originalLine, to_string(stoi(leftOperand(originalLine, i)) / stoi(rightOperand(originalLine, i)))); i = 0; continue; } if (originalLine[i] == '%') { originalLine = replace(leftOperand(originalLine, i) + originalLine[i] + rightOperand(originalLine, i), originalLine, to_string(stoi(leftOperand(originalLine, i)) % stoi(rightOperand(originalLine, i)))); i = 0; continue; } i++; } } while (checkForSeriesOfCharacters2(originalLine, "+-")) { for (size_t i = 0; i < originalLine.length();) { if (originalLine[i] == '+') { originalLine = replace(leftOperand(originalLine, i) + originalLine[i] + rightOperand(originalLine, i), originalLine, to_string(stoi(leftOperand(originalLine, i)) + stoi(rightOperand(originalLine, i)))); i = 0; continue; } if (originalLine[i] == '-') { if (originalLine[0] != '-' || i != 0) { originalLine = replace(leftOperand(originalLine, i) + originalLine[i] + rightOperand(originalLine, i), originalLine, to_string(stoi(leftOperand(originalLine, i)) - stoi(rightOperand(originalLine, i)))); i = 0; } else i++; continue; } i++; } } } catch (invalid_argument &ex) { throw invalid_argument("Invalid operand in statement " + to_string(lineNumber) + "!" ); } return originalLine; return 0; } void assignmentThings(map & Variables ,string line, int lineNumber) { if (!(checkForString(line, "print") || checkForString(line, "svar"))) { //Öncelikle değişken boşluklarına bak vector variableNames = splitWithAChar(line, ','); string calculations; /*if (line[0] != ';') throw runtime_error("An error occured: \';\' couldn't find at the end of statement " + to_string(lineNumber) + "!"); line = removeChar(line, ';');*/ for (size_t i = 0; i < splitWithAChar(line, ',').size(); i++) { if (!IsVariable(splitWithAChar(line, ',')[i])) throw runtime_error("An error occured: Invalid variable definition in statement " + to_string(lineNumber) + "! Please be sure to make variable names sticky."); } //değişken arasındaki boşlukları kaldır line = removeWithoutString(line, ' '); vector directVariablesFull = splitWithAChar(line, ','); for (size_t i = 0; i < directVariablesFull.size(); i++) { calculations = splitWithAChar(directVariablesFull[i], '=')[1]; for (auto k : Variables) { calculations = replace(k.first, splitWithAChar(directVariablesFull[i], '=')[1], k.second); } !checkForAlphaCharactersInAString ? Variables[splitWithAChar(directVariablesFull[i], '=')[0]] = eval(calculations, lineNumber) : Variables[splitWithAChar(directVariablesFull[i], '=')[0]] = calculations; } } } string removeChar(string sentence, char value) { string newSentence; int flag = 0; for (size_t i = 0; i < sentence.length(); i++) { if (sentence[i] != value) newSentence += sentence[i]; } return newSentence; } string removeWithoutString(string sentence, char value) { string newSentence; int flag = 0; for (size_t i = 0; i < sentence.length(); i++) { if (sentence[i] == '\"') flag += 1; if (sentence[i] != value || flag%2==1) newSentence += sentence[i]; } return newSentence; } bool checkForString(string sentence, string val) { int flag = 1; for (size_t i = 0; i < sentence.length(); i++) { flag = 1; if (sentence[i] == val[0]) { for (size_t k = 0; k < val.length(); k++) { if (sentence[i + k] != val[k]) { flag = 0; break; } } if (flag == 1) return true; } } return false; } string replace(string val,string sentence, string replace) { int flag = 1; size_t i, k; for (i = 0; i < sentence.length(); i++) { flag = 1; if (sentence[i] == val[0]) { for (k = 0; k < val.length(); k++) { if (sentence[i + k] != val[k]) { flag = 0; break; } } if (flag == 1) { sentence = sentence.replace(i, val.length(), replace); } } } return sentence; } vector splitWithAChar(string sentence, char val) { vector List; size_t temp = 0; for (size_t i = 0; i < sentence.length(); i++) { if (sentence[i] == val) { string make(sentence.begin() + temp, sentence.begin() + i); List.push_back(make); temp = i+1; } else if (i == (sentence.length() - 1)) { string make(sentence.begin() + temp, sentence.begin() + i+1); List.push_back(make); } } return List; } bool checkForMapObject(vector operations, string look) { int counter = 0; for (size_t k = 0; k < operations.size(); k++ ) { for (size_t i = 0; i < look.length(); i++) { if (operations[k] == look[i]) return true; } } return false; } bool checkForSeriesOfCharacters(string val, string look) { int counter = 0; for (size_t k = 0; k < val.size(); k++) { for (size_t i = 0; i < look.length(); i++) { if (val[k] == look[i]) return true; } } return false; } bool checkForSeriesOfCharacters2(string val, string look) { int counter = 0; for (size_t k = 0; k < val.size(); k++) { for (size_t i = 0; i < look.length(); i++) { if (val[k] == look[i]) { if (val[0] == '-') { string wow(val.begin() + 1, val.begin() + val.length()); if (!(checkForSeriesOfCharacters(wow, "+-"))) return false; } return true; } } } return false; } bool checkForAlphaCharactersInAString(string line) { for (size_t i = 0; i < line.length(); i++) { if (isalpha(line[i])) return false; } return true; } string replaceVariables(string line, map Variables) { for ( auto i : Variables) { if (checkForString(line, i.first)) { line = replace(i.first, line, i.second); } } return line; } int printThings(string line, map Variables, int lineNumber) { if (checkForString(line, "print")) { line = replace("print", line, ""); line = removeWithoutString(line, ' '); line = replaceVariables(line, Variables); /*for (size_t i = 0; i < line.length(); i++) { if (isalpha(line[i])) throw runtime_error("An error occured: Undefined variable used in statement "+to_string(lineNumber)); }*/ if (checkForString(line, "\"")) { if (checkForString(line, "+")) { vector splitted = splitWithAChar(line, '+'); for (auto i : splitted) { if (checkForString(i, "\"")) { i = removeChar(i, '\"'); } cout << i; } cout << endl; return 0; } else { line = removeChar(line, '\"'); cout << line << endl; return 0; } } else if(checkForString(line, "True") || checkForString(line, "False")) { checkForString(line , "+") ? throw runtime_error("An error occured: Invalid use of print keyword in statement " + lineNumber + '!') : 0; cout << line << endl; return 0; } else { cout << eval(line, lineNumber) << endl; return 0; } throw runtime_error("An error occured: Invalid use of print keyword in statement " + lineNumber + '!'); } } bool IsVariable(string line) { for (size_t i = 0; i < line.length(); i++) { if (isalpha(line[i])) { for (size_t k = i + 1; k < line.length(); k++) { if (line[k] == ' ') { size_t l = k + 1; while (line[l] != '=' && l < line.length()) { if (isalpha(line[l])) return false; l++; } return true; } } } } return true; } map svarThings(string line, int lineNumber) { map Variables; if (checkForString(line, "svar")) { //svar ı kaldır line = replace("svar", line, ""); //Öncelikle değişken boşluklarına bak vector variableNames = splitWithAChar(line, ','); if (!checkForString(line, "=")) for (size_t i = 0; i < splitWithAChar(line, ',').size(); i++) { if (!IsVariable(splitWithAChar(line, ',')[i])) throw runtime_error("An error occured: Invalid variable definition in statement " + to_string(lineNumber) + "! Please be sure to make variable names sticky."); } else { for (size_t i = 0; i < splitWithAChar(line, ',').size(); i++) { if (!IsVariable(splitWithAChar(line, ',')[i])) throw runtime_error("An error occured: Invalid variable definition in statement " + to_string(lineNumber) + "! Please be sure to make variable names sticky."); } //değişken arasındaki boşlukları kaldır line = removeWithoutString(line, ' '); vector directVariablesFull = splitWithAChar(line, ','); for (size_t i = 0; i < directVariablesFull.size(); i++) { Variables[splitWithAChar(directVariablesFull[i], '=')[0]] = splitWithAChar(directVariablesFull[i], '=')[1]; } return Variables; } //değişken arasındaki boşlukları kaldır line = removeChar(line, ' '); //değişkenleri al variableNames = splitWithAChar(line, ','); for (size_t i = 0; i < variableNames.size(); i++) { Variables[variableNames[i]] = ""; } return Variables; } } int NumberOfLines() { int numberOfLines = 1; vector splittedLines; string line; ofstream file("Codes.txt"); if (file.is_open()) { while (getline(cin, line)) { if (line[line.length()-1] != ';') throw runtime_error("An error occured: No comma at the end of statement " + numberOfLines); splittedLines = splitWithAChar(line, ';'); for (auto i : splittedLines) { file << i << '\n'; numberOfLines++; } } file << "stop"; file.close(); } else throw runtime_error(" An error occured while opening file!\n"); return numberOfLines; } vector Lines(int numberOfLines) { vector lines; string take; ifstream file("Codes.txt"); if (file.is_open()) { while (getline(file, take)) { lines.push_back(take); } file.close(); } else throw runtime_error(" An error occured while opening file!\n"); return lines; }

ProgDil [Custom Interpreter]