According to the code of criminal procedure, which situation occurring in the presence of an officer requires an arrest, even without a warrant?

The requirement for an arrest without a warrant largely hinges on the nature and severity of the offense, particularly for situations that pose an immediate risk to public safety or involve the protection of individuals. In the case of a violation of a protective order, law enforcement officers are mandated to act because such violations directly threaten an individual's safety, often involving issues like domestic violence or harassment.

When an officer witnesses this type of violation occurring, they have the authority to make an arrest to prevent further harm and to uphold the legal protections granted by the order. This reflects the legal framework designed to protect vulnerable individuals from potential harm, allowing law enforcement to intervene decisively.

The other situations, while they may require police attention, do not universally necessitate arrest by an officer witnessing the event. For instance, petty theft can sometimes be addressed through citations or other legal actions rather than immediate arrest. Public intoxication may vary significantly in how it's managed depending on local laws and the circumstances of the individual involved. Attractive nuisance is a legal concept rather than an immediate criminal act and does not typically call for arrest in the same direct manner as a violation of a protective order.