/** Returns an ast node representing the expression {@code expression != null}. */
public static JExpression createOptimizedNotNullComparison(
JProgram program, SourceInfo info, JExpression expression) {
JReferenceType type = (JReferenceType) expression.getType();
if (type.isNullType()) {
return program.getLiteralBoolean(false);
}
if (!type.canBeNull()) {
return createOptimizedMultiExpression(expression, program.getLiteralBoolean(true));
}
return new JBinaryOperation(
info,
program.getTypePrimitiveBoolean(),
JBinaryOperator.NEQ,
expression,
program.getLiteralNull());
}
