package vaporize.library;

import cs132.vapor.ast.*;
import java.util.ArrayList;

class CFGNode {

    private Node instruction;
    private ArrayList<CFGNode> sources;
    private ArrayList<CFGNode> dests;
    private int line;

    protected CFGNode(Node instruction) {
        this.instruction = instruction;
        this.sources = new ArrayList<>();
        this.dests = new ArrayList<>();
        this.line = this.instruction.sourcePos.line;
    }

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

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

    public boolean equals(Node other) {
        return other.sourcePos ==
            this.instruction.sourcePos;
    }

    protected void addSource(CFGNode node) {
        this.sources.add(node);
    }

    protected void addDest(CFGNode node) {
        this.dests.add(node);
    }

    protected Node getInstruction() {
        return this.instruction;
    }

    protected ArrayList<CFGNode> getSources() {
        return this.sources;
    }

    protected ArrayList<CFGNode> getDests() {
        return this.dests;
    }

}