320 lines
12 KiB
C++
320 lines
12 KiB
C++
#include <iostream>
|
|
#include <fstream>
|
|
#include <vector>
|
|
#include <string>
|
|
using namespace std;
|
|
|
|
class tokens {
|
|
public:
|
|
string type;
|
|
string content;
|
|
};
|
|
|
|
bool checkForDec(string str) {
|
|
try {
|
|
if (stoi(str) * 1.0 == stod(str)) {
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
} catch (const std::invalid_argument& e) {
|
|
return false;
|
|
} catch (const std::out_of_range& e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool checkForInt(string str) {
|
|
try {
|
|
if (stoi(str) * 1.0 == stod(str)) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
} catch (const std::invalid_argument& e) {
|
|
return false;
|
|
} catch (const std::out_of_range& e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
string findType(string str, vector<string> terms, vector<string> list) {
|
|
for (int i = 0; i < list.size(); i++) {
|
|
if (str == terms[i]) {
|
|
return list[i];
|
|
}
|
|
}
|
|
return "Error";
|
|
}
|
|
|
|
void error(string str) {
|
|
cout << "\u001b[31m Error running code: " << str << "\u001b[39m" << endl;
|
|
}
|
|
|
|
bool isVerbose = false;
|
|
|
|
void verbose(string str) {
|
|
if (isVerbose) cout << "\u001b[36m Info: " << str << "\u001b[39m" << endl;
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
cout << "Oktolang interpreter\n";
|
|
vector<string> vars;
|
|
vector<string> varTypes;
|
|
vector<string> varContents;
|
|
vector<string> functions = {"exit", "log", "type", "verbose", "str", "dec", "int"};
|
|
bool running = true;
|
|
string in;
|
|
int lineCounter = 0;
|
|
int maxLines = 0;
|
|
vector<string> lines;
|
|
if (argc > 1) {
|
|
ifstream inFile(argv[1]);
|
|
string inLines;
|
|
while (getline(inFile, inLines)) {
|
|
lines.push_back(inLines);
|
|
maxLines ++;
|
|
}
|
|
}
|
|
while (running) {
|
|
if (argc == 1) {
|
|
cout << "> ";
|
|
getline(cin, in);
|
|
} else {
|
|
if (lineCounter == maxLines) break;
|
|
in = lines[lineCounter];
|
|
lineCounter ++;
|
|
}
|
|
vector<string> terms = {""};
|
|
vector<string> types;
|
|
int termNumber = 0;
|
|
bool stringOpen = false;
|
|
|
|
// Split everything up
|
|
verbose("Splitting everything up...");
|
|
for (int i = 0; i < in.length(); i++) {
|
|
if (in[i] == ' ' && !stringOpen) {
|
|
if (!terms[termNumber].empty()) {
|
|
termNumber++;
|
|
terms.push_back("");
|
|
}
|
|
}
|
|
else {
|
|
terms[termNumber] += in[i];
|
|
}
|
|
|
|
if (in[i] == '"') {
|
|
stringOpen = !stringOpen;
|
|
}
|
|
|
|
}
|
|
// Assign types to everything
|
|
verbose("Assigning types...");
|
|
for (int i = 0; i < terms.size(); i++) {
|
|
bool typeFound = false;
|
|
string keyword = terms[i];
|
|
for (int x = 0; x < functions.size(); x++) {
|
|
if (keyword == functions[x]) {
|
|
types.push_back("function");
|
|
typeFound = true;
|
|
}
|
|
}
|
|
if (!typeFound) {
|
|
for (int x = 0; x < vars.size(); x++) {
|
|
if (keyword == vars[x]) {
|
|
types.push_back("variable");
|
|
typeFound = true;
|
|
}
|
|
}
|
|
}
|
|
if (!typeFound) {
|
|
if (keyword == "+") { types.push_back("plus"); }
|
|
else if (keyword == "-") { types.push_back("minus"); }
|
|
else if (keyword == "*") { types.push_back("multiply"); }
|
|
else if (keyword == "/") { types.push_back("divide"); }
|
|
else if (keyword == "++") { types.push_back("increment"); }
|
|
else if (keyword == "--") { types.push_back("decrement"); }
|
|
else if (keyword == "=") { types.push_back("equals"); }
|
|
else if (keyword[0] == '"') { types.push_back("str"); }
|
|
else if (checkForInt(keyword)) { types.push_back("int"); }
|
|
else if (checkForDec(keyword)) { types.push_back("dec"); }
|
|
else { types.push_back("unknown"); }
|
|
}
|
|
}
|
|
|
|
// Start interpreting code
|
|
verbose("Running code...");
|
|
if (terms[0] == "exit") {
|
|
verbose("Exit command run");
|
|
if (terms.size() < 2) {
|
|
return 0;
|
|
} else if (stoi(terms[1])) {
|
|
return stoi(terms[1]);
|
|
} else if (terms[1] == "0") {
|
|
return 0;
|
|
} else {
|
|
error("Exit arguments must be integers");
|
|
}
|
|
} else if (terms[0] == "log") {
|
|
verbose("Log command run");
|
|
if (terms.size() > 1) {
|
|
if (types[1] == "str" || types[1] == "num") {
|
|
verbose("Logging directly");
|
|
cout << terms[1] << endl;
|
|
} else if (types[1] == "variable") {
|
|
verbose("Logging a variable");
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (vars[i] == terms[1]) {
|
|
verbose("Logging variable " + vars[i] + " with type " + varTypes[i] + " and value " + varContents[i]);
|
|
cout << varContents[i] << endl;
|
|
break;
|
|
}
|
|
}
|
|
} else if (types[1] == "function") {
|
|
error("for now, functions cannot be logged");
|
|
} else if (types[1] == "unknown") {
|
|
error("that type is unknown");
|
|
}
|
|
} else {
|
|
error("log requires an argument");
|
|
}
|
|
} else if (terms[0] == "type") {
|
|
verbose("Type command run");
|
|
if (terms.size() < 2) {
|
|
error("type requires an argument");
|
|
} else {
|
|
cout << types[1] << endl;
|
|
}
|
|
} else if (terms[0] == "str") {
|
|
verbose("String command run");
|
|
if (terms.size() < 2) {
|
|
error("variable must have a name");
|
|
} else {
|
|
if (terms.size() == 3) {
|
|
error("when defining a variable, set what the variable means");
|
|
} else if (terms[2] != "=") {
|
|
error("when defining a variable, use '='");
|
|
} else if (types[3] != "str") {
|
|
error("you've initialised a string, but set it's value to something else");
|
|
} else if (types[2] != "unknown") {
|
|
error("variable is already initialised");
|
|
} else {
|
|
verbose("String is being defined...");
|
|
vars.push_back(terms[1]);
|
|
varTypes.push_back("str");
|
|
varContents.push_back(terms[3]);
|
|
if (isVerbose) {
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (vars[i] == terms[1]) {
|
|
verbose("Variable " + vars[i] + " with type " + varTypes[i] + " defined as " + varContents[i]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (terms[0] == "dec") {
|
|
verbose("Decimal command run");
|
|
if (terms.size() < 2) {
|
|
error("variable must have a name");
|
|
} else {
|
|
if (terms.size() == 3) {
|
|
error("when defining a variable, set what the variable means");
|
|
} else if (terms[2] != "=") {
|
|
error("when defining a variable, use '='");
|
|
} else if (!(types[3] == "dec" || types[3] == "int")) {
|
|
error("you've initialised a decimal, but set it's value to something else");
|
|
} else {
|
|
verbose("Decimal is being defined...");
|
|
vars.push_back(terms[1]);
|
|
varTypes.push_back("dec");
|
|
varContents.push_back(terms[3]);
|
|
if (isVerbose) {
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (vars[i] == terms[1]) {
|
|
verbose("Variable " + vars[i] + " with type " + varTypes[i] + " defined as " + varContents[i]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (terms[0] == "int") {
|
|
verbose("Integer command run");
|
|
if (terms.size() < 2) {
|
|
error("variable must have a name");
|
|
} else {
|
|
if (terms.size() == 3) {
|
|
error("when defining an integer, set what the variable means");
|
|
} else if (terms[2] != "=") {
|
|
error("when defining a variable, use '='");
|
|
} else if (types[3] != "int") {
|
|
error("you've initialised a number, but set it's value to something else");
|
|
} else {
|
|
verbose("Number is being defined...");
|
|
vars.push_back(terms[1]);
|
|
varTypes.push_back("int");
|
|
varContents.push_back(terms[3]);
|
|
if (isVerbose) {
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (vars[i] == terms[1]) {
|
|
verbose("Variable " + vars[i] + " with type " + varTypes[i] + " defined as " + varContents[i]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (terms[0] == "run") {
|
|
if (terms.size() < 2) {
|
|
error("run requires an argument");
|
|
} else {
|
|
int returnCode = system(terms[1])
|
|
}
|
|
} else if (terms[0] == "verbose") {
|
|
isVerbose = !isVerbose;
|
|
} else if (terms[0] == "help") {
|
|
cout << "Oktolang Help\nBuilt In Functions:\n help: This current help function\n log: Log something to the command line\n type: Find the type of the input\n str: Define a string\n num: Define a number\n";
|
|
} else {
|
|
bool variableFound = false;
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (vars[i] == terms[0]) {
|
|
variableFound = true;
|
|
verbose("Found variable " + vars[i] + " with value " + varContents[i] + " and type " + varTypes[i]);
|
|
if (varTypes[i] == "int" || varTypes[i] == "dec") {
|
|
if (types[1] == "increment") {
|
|
verbose("Incrementing variable " + vars[i] + " with value " + varContents[i]);
|
|
if (varTypes[i] == "dec") varContents[i] = to_string(stod(varContents[i]) + 1);
|
|
if (varTypes[i] == "int") varContents[i] = to_string(stoi(varContents[i]) + 1);
|
|
verbose("New value of " + vars[i] + " is " + varContents[i]);
|
|
} else if (types[1] == "equals") {
|
|
if (types[3] == "add") {
|
|
verbose("Adding " + vars[2] + " and " + vars[4]);
|
|
if (types[2] == "variable") {
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (types[2] == vars[i]) {
|
|
terms[2] = vars[i];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (types[4] == "variable") {
|
|
for (int i = 0; i < vars.size(); i++) {
|
|
if (types[4] == vars[i]) {
|
|
terms[4] = vars[i];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (!variableFound) error("I don't know how that works");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|