org.scijava.parse.Tokens Maven / Gradle / Ivy
/*
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* Parsington: the SciJava mathematical expression parser.
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package org.scijava.parse;
/**
* Utility methods for working with tokens.
*
* @author Curtis Rueden
*/
public final class Tokens {
private Tokens() {
// NB: Prevent instantiation of utility class.
}
public static boolean isNumber(final Object o) {
return o instanceof Number;
}
public static boolean isGroup(final Object o) {
return o instanceof Group;
}
public static boolean isVariable(final Object o) {
return o instanceof Variable;
}
public static boolean isOperator(final Object o) {
return o instanceof Operator;
}
public static boolean isComma(final Object o) {
return isCharacter(o, ',');
}
public static boolean isCharacter(final Object o, final Character c) {
return o instanceof Character && ((Character) o).equals(c);
}
public static boolean isMatchingGroup(final Object o, final Group g) {
return isGroup(o) && ((Group) o).matches(g);
}
}