MY_COMPILER/midend/llvm/value/IrValue.java

package midend.llvm.value;

import java.util.ArrayList;

import midend.llvm.type.IrType;
import midend.llvm.use.IrUser;

public class IrValue {
    private IrType type;
    private String name;
    private ArrayList<IrUser> users;

    public IrValue(IrType type, String name) {
        this.type = type;
        this.name = name;
        this.users = new ArrayList<>();
    }

    public IrType getType() {
        return type;
    }

    public String getName() {
        return name;
    }

    public ArrayList<IrUser> getUsers() {
        return users;
    }

    public void addUser(IrUser user) {
        users.add(user);
    }

    public void deleteUser(IrUser user) {
        users.remove(user);
    }

    public void clearUsers() {
        ArrayList<IrUser> usersCopy = new ArrayList<>(users);
        for (IrUser user : usersCopy) {
            user.deleteUse(this);
        }
    }

    public void replaceUserToAnother(IrValue newValue) {
        ArrayList<IrUser> usersCopy = new ArrayList<>(users);
        for (IrUser user : usersCopy) {
            for (int i = 0; i < user.getUses().size(); i++) {
                if (user.getUse(i) == this) {
                    user.setUse(i, newValue);
                }
            }
        }
    }

    public String toString() {
        return type.toString() + " " + name;
    }

    public void toMips() {
        // 子类实现
    }

    public String getMipsLabel() {
        return name.substring(1);
    }
}