// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.codegen;

import java.util.*;

public class ErrorCollector implements ErrorSinc
{
    protected List<String> mErrors = new ArrayList<String>();

    @Override
    public void addError( String pCode, String pForHuman, String... pOn )
    {
        if ( (pCode != null) && (pForHuman != null) )
        {
            String zError = pCode + " " + pForHuman;
            if ( pOn != null )
            {
                for ( String s : pOn )
                {
                    if ( (s != null) && (s.length() != 0) )
                    {
                        zError += " on " + s;
                    }
                }
            }
            addError( zError );
        }
    }

    @Override
    public void addError( String pError )
    {
        if ( pError != null )
        {
            mErrors.add( pError );
        }
    }

    @Override
    public boolean hasErrors()
    {
        return !mErrors.isEmpty();
    }

    @Override
    public int errorCount()
    {
        return mErrors.size();
    }

    /**
     * @return Set of Errors (or null if none)
     */
    public String[] getErrors()
    {
        return mErrors.isEmpty() ? null : mErrors.toArray( new String[mErrors.size()] );
    }

    public void clearErrors()
    {
        mErrors.clear();
    }

    public void dumpErrors()
    {
        if ( hasErrors() )
        {
            System.err.println( "*** Errors:" );
            for ( String mError : mErrors )
            {
                System.err.println( "  " + mError );
            }
            System.err.flush();
        }
    }
}