/**
* Creates a new format onlyWith the specified properties. The properties must be given as key
* value pairs.
*/
public Format(Object... p) {
this.properties = new HashMap<FormatKey<?>, Object>();
for (int i = 0; i < p.length; i += 2) {
FormatKey<?> key = (FormatKey<?>) p[i];
if (!key.isAssignable(p[i + 1])) {
throw new ClassCastException(
key + ": " + p[i + 1] + " must be of type " + key.getValueClass());
}
this.properties.put(key, p[i + 1]);
}
}
/**
* Creates a new format which contains all properties from this format and additional properties
* listed.
*
* <p>If a property is specified in both formats, then the property value from this format is
* used. It overwrites that format.
*
* <p>If one of the format has more properties than the other, then the new format is more
* specific than this format.
*
* @param p The properties must be given as key value pairs.
* @return That format with properties overwritten by this format.
*/
public Format append(Object... p) {
HashMap<FormatKey, Object> m = new HashMap<FormatKey, Object>(this.properties);
for (int i = 0; i < p.length; i += 2) {
FormatKey key = (FormatKey) p[i];
if (!key.isAssignable(p[i + 1])) {
throw new ClassCastException(
key + ": " + p[i + 1] + " must be of type " + key.getValueClass());
}
m.put(key, p[i + 1]);
}
return new Format(m, false);
}
/**
* Creates a new format which contains all specified properties and additional properties from
* this format.
*
* <p>If a property is specified in both formats, then the property value from this format is
* used. It overwrites that format.
*
* <p>If one of the format has more properties than the other, then the new format is more
* specific than this format.
*
* @param p The properties must be given as key value pairs.
* @return That format with properties overwritten by this format.
*/
public Format prepend(Object... p) {
HashMap<FormatKey<?>, Object> m = new HashMap<FormatKey<?>, Object>();
for (int i = 0; i < p.length; i += 2) {
FormatKey<?> key = (FormatKey<?>) p[i];
if (!key.isAssignable(p[i + 1])) {
throw new ClassCastException(
key + ": " + p[i + 1] + " must be of type " + key.getValueClass());
}
m.put(key, p[i + 1]);
}
for (Map.Entry<FormatKey<?>, Object> e : this.properties.entrySet()) {
if (!m.containsKey(e.getKey())) {
m.put(e.getKey(), e.getValue());
}
}
return new Format(m, false);
}