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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
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 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
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 * unmodified Software as contributed to or provided by such licensor, or (ii)
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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.js.parser;

import java.util.ArrayList;
import java.util.List;

import com.oracle.js.parser.ir.Statement;

Base class for parser context nodes
/**
 * Base class for parser context nodes
 */
abstract class ParserContextBaseNode implements ParserContextNode {
    
Flags for this node
/**
     * Flags for this node
     */
    protected int flags;

    private List<Statement> statements;

    ParserContextBaseNode() {
        this(0);
    }

    ParserContextBaseNode(int flags) {
        this.flags = flags;
        this.statements = new ArrayList<>();
    }

    
Returns:
The flags for this node/**
     * @return The flags for this node
     */
    @Override
    public int getFlags() {
        return flags;
    }

    
Returns a single flag
Params:
flag – 
Returns:
A single flag/**
     * Returns a single flag
     *
     * @param flag
     * @return A single flag
     */
    protected int getFlag(final int flag) {
        return (flags & flag);
    }

    
Params:
flag – 
Returns:
the new flags/**
     * @param flag
     * @return the new flags
     */
    @Override
    public int setFlag(final int flag) {
        flags |= flag;
        return flags;
    }

    public int clearFlag(final int flag) {
        flags &= ~flag;
        return flags;
    }

    
Returns:
The list of statements that belongs to this node/**
     * @return The list of statements that belongs to this node
     */
    @Override
    public List<Statement> getStatements() {
        return statements;
    }

    
Params:
statements – /**
     * @param statements
     */
    @Override
    public void setStatements(final List<Statement> statements) {
        this.statements = statements;
    }

    
Adds a Statement at the end of the Statementlist
Params:
statement – The statement to add/**
     * Adds a Statement at the end of the Statementlist
     *
     * @param statement The statement to add
     */
    @Override
    public void appendStatement(final Statement statement) {
        this.statements.add(statement);
    }

    
Adds a statement at the begining of the statementlist
Params:
statement – The statement to add/**
     * Adds a statement at the begining of the statementlist
     *
     * @param statement The statement to add
     */
    @Override
    public void prependStatement(final Statement statement) {
        this.statements.add(0, statement);
    }
}