package st;

import java.util.ArrayList;

public class MethodInstance extends AbstractInstance {
    private ArrayList<TypeInstance> args;       // the list of arguments
    private ArrayList<TypeInstance> lvars;      // the list of local variables
    protected ClassInstance par_cls;            // the surrounding class
    private ClassInstance rtrn;                      // the returned type

    public MethodInstance(String name, ClassInstance rtrn, ClassInstance par_cls) {
        super(name, TypeEnum.method);
        this.lvars = new ArrayList<>();
        this.args = new ArrayList<>();
        this.par_cls = par_cls;
        this.rtrn = rtrn;
    }

    public boolean equals(Object other) {
        MethodInstance o;
        return (other instanceof MethodInstance &&
                ((o = (MethodInstance) other).getName() == this.getName()));
    }

    public ArrayList<TypeInstance> getArguments() {
        return this.args;
    }

    public ArrayList<TypeInstance> getLocals() {
        return this.lvars;
    }

    public ClassInstance getReturn() {
        return this.rtrn;
    }

    protected void addArgument(TypeInstance arg) {
        this.args.add(arg);
        this.lvars.add(arg);
    }

    protected void addLocal(TypeInstance lvar) {
        this.lvars.add(lvar);
    }

    public void addParentClass(ClassInstance par_cls) {
        this.par_cls = par_cls;
    }

    public ClassInstance getParentClass() {
        return this.par_cls;
    }

}