package st;

public abstract class AbstractInstance {
    protected String name;              // the literal name of the declaration
    protected TypeEnum type;            // the type of the declaration
    protected int size;                 // the size in memory
    protected AbstractInstance scope;   // the surrounding method or class

    public AbstractInstance(String name, TypeEnum type) {
        this.type = type;
        this.name = name;
    }

    public String toString() {
        return this.name;
    }

    public boolean equals(AbstractInstance other) {
        return this.name == other.getName() &&
            this.type == this.type;
    }

    public int hashCode() {
        return this.name.hashCode();
    }

    public void setScope(AbstractInstance cls) {
        if (this.scope != null)
            throw new RuntimeException("setScope: Attempted to set scope twice!");

        this.scope = cls;
    }

    public String getName() {
        return this.name;
    }

    public TypeEnum getType() {
        return this.type;
    }

    public int getSize() {
        return this.size;
    }

    public AbstractInstance getScope() {
        /**
         * Returns the scope of the method, or
         * `null' if unset.
         */
        return this.scope;
    }

}