net.sourceforge.pmd.lang.java.ast.ASTUnaryExpression Maven / Gradle / Ivy
/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.java.ast;
/**
* Represents a unary operation on a value. The syntactic form may be
* prefix or postfix, which are represented with the same nodes, even
* though they have different precedences.
*
*
*
* UnaryExpression ::= PrefixExpression | PostfixExpression
*
* PrefixExpression ::= {@link UnaryOp PrefixOp} {@link ASTExpression Expression}
*
* PostfixExpression ::= {@link ASTExpression Expression} {@link UnaryOp PostfixOp}
*
*
*/
public final class ASTUnaryExpression extends AbstractJavaExpr {
private UnaryOp operator;
ASTUnaryExpression(int id) {
super(id);
}
@Override
protected R acceptVisitor(JavaVisitor visitor, P data) {
return visitor.visit(this, data);
}
/** Returns the expression nested within this expression. */
public ASTExpression getOperand() {
return (ASTExpression) getChild(0);
}
/**
* Returns true if this is a prefix expression.
*
* @deprecated XPath-attribute only, use {@code getOperator().isPrefix()} in java code.
*/
@Deprecated
public boolean isPrefix() {
return getOperator().isPrefix();
}
/** Returns the constant representing the operator of this expression. */
public UnaryOp getOperator() {
return operator;
}
void setOp(UnaryOp op) {
this.operator = op;
}
}