Actions
In an EBIF resource, programmatic (procedural) information takes the form of byte code, where each operation and its (optional) operands is referred to as an action. Actions are organized into sequences by means of one or more action tables where each entry points at (1) an encoded action and (2) the action table index of the next action to execute after the current action's execution is completed. An action sequence terminates when the next action table index is a special value (0xFFFF) or in the case of certain flow of control actions. Action sequences effectively represent one or more traditional code blocks with potential internal looping behavior.
Action sequences are executed as a result of firing certain predefined events, such as a page load event, a key press event, a click event, etc. As such, all programmatic execution takes place in the context of event handlers, whose execution is serialized by an ETV User Agent.
The following categories of actions are defined by EBIF:
- Flow of Control Actions
- Predicate Actions
- Variable Store Actions
- Arithmetic Actions
- Boolean Logic Actions
- Mathematic Actions
- String Actions
- Array Actions
- Application and Page Actions
- Widget Actions
- Table Actions
- Miscellaneous Actions
Read more about this topic: Enhanced TV Binary Interchange Format
Famous quotes containing the word actions:
“A young man is not a proper hearer of lectures on political science; for he is inexperienced in the actions that occur in life, but its discussions start from these and are about these; and, further, since he tends to follow his passions, his study will be vain and unprofitable, because the end that is aimed at is not knowledge but action. And it makes no difference whether he is young in years or youthful in character.”
—Aristotle (384–323 B.C.)
“Our pride and self-importance are European, while our development and actions are Asiatic.”
—Anton Pavlovich Chekhov (1860–1904)
“Now they express
All that’s content to wear a worn-out coat,
All actions done in patient hopelessness,
All that ignores the silences of death,
Thinking no further than the hand can hold,
All that grows old,
Yet works on uselessly with shortened breath.”
—Philip Larkin (1922–1986)