package hudson.plugins.warnings.parser;

import hudson.plugins.warnings.util.model.Priority;

import java.util.regex.Matcher;

import org.apache.commons.lang.StringUtils;

/**
 * A parser for the gcc compiler warnings.
 *
 * @author Greg Roth
 */
public class GccParser extends RegexpLineParser {
    /** Warning type of this parser. */
    static final String WARNING_TYPE = "gcc";
    /** Pattern of gcc compiler warnings. */
    private static final String GCC_WARNING_PATTERN = "^(.*\\.[chpimxsola0-9]+):(?:(\\d*):(?:\\d*:)*\\s*(?:(warning|error)\\s*:|\\s*(.*))|\\s*(undefined reference to.*))(.*)$";
    /**
     * Creates a new instance of <code>GccParser</code>.
     */
    public GccParser() {
        super(GCC_WARNING_PATTERN, "GNU compiler (gcc)");
    }

    /** {@inheritDoc} */
    @Override
    protected Warning createWarning(final Matcher matcher) {
        Priority priority;
        if ("warning".equalsIgnoreCase(matcher.group(3))) {
            priority = Priority.NORMAL;
        }
        else if ("error".equalsIgnoreCase(matcher.group(3))) {
            priority = Priority.HIGH;
        }
        else if (StringUtils.isNotBlank(matcher.group(4))) {
            if (matcher.group(4).contains("instantiated from here")) {
                return FALSE_POSITIVE;
            }
            priority = Priority.HIGH;
            String category = "GCC error";
            return new Warning(matcher.group(1), getLineNumber(matcher.group(2)), WARNING_TYPE,
                   category, matcher.group(4), priority);
        }
        else {
	    if (matcher.group(1).contains("                 from")) { 
	        return FALSE_POSITIVE;
	    }
            priority = Priority.HIGH;
            String category = "GCC error";
            return new Warning(matcher.group(1), 0, WARNING_TYPE,
                    category, matcher.group(5), priority);
        }
        String category = "GCC " + matcher.group(3);
        return new Warning(matcher.group(1), getLineNumber(matcher.group(2)), WARNING_TYPE,
                category, matcher.group(6), priority);
    }
}