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package Compiler;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.Path;
import java.util.List;
import java.util.Base64;
import java.util.Scanner;
import java.util.ArrayList;
import java.io.File;
import java.io.FileNotFoundException;
//Base class for the interpreter
public class Language {
static boolean leaveCFile = false;
static boolean hadError = false;
static boolean printC = false;
static boolean executeAfter = false;
static Path sourcefile;
public static void main(String[] args) {
try {
sourcefile = Paths.get(args[0]);
} catch (java.lang.ArrayIndexOutOfBoundsException e) {
interactiveMode();
return;
}
if (args[0].equals("-h") || args[0].equals("--help")) {
System.out.println(getHelpText());
return;
}
if (!(Files.exists(sourcefile))) {
System.err.println("Could not find source code path.");
return;
}
String outname = args[0].split("\\.(?=[^\\.]+$)")[0];
ArrayList<String> arrayArgs = new ArrayList<>();
for (int i = 0; i < args.length; i++) {
String arg = args[i];
arrayArgs.add(arg);
if (arg.equals("-o") || arg.equals("--out")) {
try {
outname = args[i + 1];
} catch (java.lang.ArrayIndexOutOfBoundsException e) {
System.err.println("Invalid output name provided");
return;
}
}
if (arg.equals("-c") || arg.equals("--keep-c-file")) {
leaveCFile = true;
}
if (arg.equals("-pc") || arg.equals("--print-c")) {
printC = true;
}
if (arg.equals("-e") || arg.equals("--execute")) {
executeAfter = true;
}
}
if (outname.startsWith("-")) {
System.err.println("Invalid output name provided");
return;
}
try {
runInterpreter(Files.readString(sourcefile), outname);
} catch (IOException e) {
e.printStackTrace();
}
}
//Function to take source code and output the result
private static void runInterpreter(String sourceCode, String outName){
//Extract tokens from the source code
TokenScanner scanner = new TokenScanner();
List<Token> tokens = scanner.extractTokens(sourceCode);
//for (Token token : tokens) {
// System.out.println(token);
//}
if (hadError) return;
//Parse into AST
Parser parser = new Parser(tokens);
List<Statement> ast = parser.parse();
if (hadError) return;
//Translate AST into equivalent C code
Translator translator = new Translator();
List<String> code = translator.compileToC(ast, printC);
if (hadError) return;
//Execute created C code
ExecuteC cExecutor = new ExecuteC();
cExecutor.compileAndExecuteC(code, outName, executeAfter, leaveCFile);
}
private static void interactiveMode() {
Scanner input = new Scanner(System.in);
String sourceCode = "1";
while (sourceCode!=""){
System.out.print("Code: ");
sourceCode = input.nextLine();
runInterpreter(sourceCode, "out");
hadError=false;
}
input.close();
}
//Basic error reporting
static void displayError(String message){
hadError=true;
System.out.println("An error was encountered");
System.out.println(message);
}
static String getHelpText() {
try {
byte[] bytes = Base64.getDecoder().decode(helpb64);
return new String(bytes);
} catch (Exception e) {
e.printStackTrace();
return "fjakdfjsd";
}
}
static String helpb64 = "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";
}
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