Class PCodeExecutor

src/CodeGeneration/PCodeExecutor.java:9–373

import java.util.Scanner;

public class PCodeExecutor {
    private final ArrayList<PCode> codes;
    private final ArrayList<RetInfo> retInfos = new ArrayList<>();
    private final ArrayList<Integer> stack = new ArrayList<>();
    private int eip = 0;
    private HashMap<String, Var> varTable = new HashMap<>();
    private final HashMap<String, Func> funcTable = new HashMap<>();
    private final HashMap<String, Integer> labelTable = new HashMap<>();

    private int mainAddress;

    private final ArrayList<String> prints = new ArrayList<>();
    private FileWriter writer;
    private Scanner scanner;

    public PCodeExecutor(ArrayList<PCode> codes, FileWriter writer, Scanner scanner) {
        this.codes = codes;
        this.writer = writer;
        this.scanner = scanner;
        for (int i = 0; i < codes.size(); i++) {
            PCode code = codes.get(i);
            // get main function address
            if (code.getType().equals(CodeType.MAIN)) {
                mainAddress = i;
            }
            // get all label
            if (code.getType().equals(CodeType.LABEL)) {
                labelTable.put((String) code.getValue1(), i);
            }
            //get all function
            if (code.getType().equals(CodeType.FUNC)) {
                funcTable.put((String) code.getValue1(), new Func(i, (int) code.getValue2()));
            }
        }
    }

    private void push(int i) {
        stack.add(i);
    }

    private int pop() {
        return stack.remove(stack.size() - 1);
    }

    private Var getVar(String ident) {
        if (varTable.containsKey(ident)) {
            return varTable.get(ident);
        } else {
            return retInfos.get(0).getVarTable().get(ident);
        }
    }

    public void run() {
        int callArgsNum = 0;
        int nowArgsNum = 0;
        boolean mainFlag = false;
        ArrayList<Integer> rparas = new ArrayList<>();
        for (; eip < codes.size(); eip++) {