sleep.engine.atoms
public class Check extends Object implements Serializable
A check object is the internal atomic step representing a predicate condition. This API is exposed to allow developers implementing a PredicateEnvironment bridge to take advantage of this API.
Everything required to setup the predicate check, evaluate all the ands/ors, and return true or false is handled by this atomic step.
To better illustrate what a Check is:
if ($x == 3) { println("\$x is 3"); }
The above sleep code would be compiled into a sequence that looks like:
[Goto]: (loop: false) [Condition]: [Predicate]: name->== negated->false [Setup]: [Create Frame] [Scalar]: $x [Push] [Scalar]: 3 [Push] [If true]: [Create Frame] [Parsed Literal] null [Element]: $x is 3 [Push] [Function Call]: &println [If False]:
The parts that are bolded are representative of the word done by the Check object.
See Also: PredicateEnvironment
Field Summary | |
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String | name |
Constructor Summary | |
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Check(String n, Block s) Constructs a check object, call by the sleep engine. |
Method Summary | |
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boolean | check(ScriptEnvironment env) Performs this "check". |
void | setChoices(Check t, Check f) Sets up the true and false choices, again this is handled by the sleep engine |
void | setInfo(int _hint) Sets the line number in code where this check object occurs, again called by the sleep engine |
String | toString(String prefix) Converts this object to a string, used by the sleep engine for constructing an AST like thing |
String | toString() Returns a string representation of this object |