package er.chronic.tags;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Pattern;
import er.chronic.Options;
import er.chronic.utils.StringUtils;
import er.chronic.utils.Token;
public class Scalar extends Tag<Number> {
public static final Pattern SCALAR_PATTERN = Pattern.compile("^\\d*$");
public static final Pattern FRACTIONAL_SCALAR_PATTERN = Pattern.compile("^\\d\\.\\d*$");
public static Set<String> TIMES = new HashSet<String>();
static {
Scalar.TIMES.add("am");
Scalar.TIMES.add("pm");
Scalar.TIMES.add("morning");
Scalar.TIMES.add("afternoon");
Scalar.TIMES.add("evening");
Scalar.TIMES.add("night");
}
public Scalar(Number type) {
super(type);
}
public static List<Token> scan(List<Token> tokens, Options options) {
for (int i = 0; i < tokens.size(); i++) {
Token token = tokens.get(i);
Token postToken = null;
if (i < tokens.size() - 1) {
postToken = tokens.get(i + 1);
}
Scalar t;
t = Scalar.scan(token, postToken, options);
if (t != null) {
token.tag(t);
}
t = ScalarDay.scan(token, postToken, options);
if (t != null) {
token.tag(t);
}
t = ScalarMonth.scan(token, postToken, options);
if (t != null) {
token.tag(t);
}
t = ScalarYear.scan(token, postToken, options);
if (t != null) {
token.tag(t);
}
}
return tokens;
}
public static Scalar scan(Token token, Token postToken, Options options) {
if (Scalar.SCALAR_PATTERN.matcher(token.getWord()).matches() || Scalar.FRACTIONAL_SCALAR_PATTERN.matcher(token.getWord()).matches()) {
if (token.getWord() != null && token.getWord().length() > 0 && !(postToken != null && Scalar.TIMES.contains(postToken.getWord()))) {
return new Scalar(Float.valueOf(token.getWord()));
}
}
else {
Integer intStrValue = StringUtils.integerValue(token.getWord());
if (intStrValue != null) {
return new Scalar(intStrValue);
}
}
return null;
}
@Override
public String toString() {
return "scalar";
}
}