package seedu.address.logic.parser;

import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
import static seedu.address.logic.parser.CliSyntax.KEYWORDS_ARGS_FORMAT;

import java.util.Arrays;
import java.util.List;
import java.util.regex.Matcher;

import seedu.address.commons.exceptions.IllegalValueException;
import seedu.address.logic.commands.AddCommand;
import seedu.address.logic.commands.Command;
import seedu.address.logic.commands.IncorrectCommand;

/**
 * Parses input arguments and creates a new AddCommand object
 */
public class AddCommandParser {

    //@@author A0163848R
    /**
     * Parses the given {@code String} of arguments in the context of the AddCommand
     * and returns an AccCommand object for execution.
     */
    public Command parse(String args) {
        final Matcher matcher = KEYWORDS_ARGS_FORMAT.matcher(args.trim());
        if (!matcher.matches()) {
            return new IncorrectCommand(
                    String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
        }

        // keywords delimited by whitespace
        final String[] keywords = matcher.group("keywords").split("\\s+");
        final List<String> keywordList = Arrays.asList(keywords);
        try {
            return new AddCommand(keywordList);
        } catch (IllegalValueException e) {
            return new IncorrectCommand(
                    e.getMessage() + String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
        }
    }
}

package seedu.address.logic.parser;

import static seedu.address.commons.core.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
import static seedu.address.logic.parser.CliSyntax.KEYWORDS_ARGS_FORMAT;

import java.util.Arrays;
import java.util.List;
import java.util.regex.Matcher;

import seedu.address.commons.exceptions.IllegalValueException;
import seedu.address.logic.commands.AddCommand;
import seedu.address.logic.commands.Command;
import seedu.address.logic.commands.IncorrectCommand;

/**
 * Parses input arguments and creates a new AddCommand object
 */
public class AddCommandParser {

    //@@author A0163848R
    /**
     * Parses the given {@code String} of arguments in the context of the AddCommand
     * and returns an AddCommand object for execution.
     */
    public Command parse(String args) {
        final Matcher matcher = KEYWORDS_ARGS_FORMAT.matcher(args.trim());
        if (!matcher.matches()) {
            return new IncorrectCommand(
                    String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
        }

        // keywords delimited by whitespace
        final String[] keywords = matcher.group("keywords").split("\\s+");
        final List<String> keywordList = Arrays.asList(keywords);
        try {
            return new AddCommand(keywordList);
        } catch (IllegalValueException e) {
            return new IncorrectCommand(
                    e.getMessage() + String.format(MESSAGE_INVALID_COMMAND_FORMAT, AddCommand.MESSAGE_USAGE));
        }
    }
}

Fix minor spelling errors