Package sleep.interfaces
Interface Operator
-
- All Known Implementing Classes:
BasicNumbers
public interface Operator
An operator in sleep parlance is anything used to operate on two variables inside of an expression. For example 2 + 3 is the expression add 2 and 3. The + plus sign is the operator.
Creating an Operator class and installing it into the environment makes the operator available for use within expressions.
To install an operator into a script environment:
ScriptInstance script; // assume Operator myOperatorBridge; // assume Hashtable environment = script.getScriptEnvironment().getEnvironment(); environment.put("operator", myOperatorBridge);
Operator bridges probably won't be as common as other bridges. Operator bridges can be used for adding new math operators or new string manipulation operators.
-
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description Scalar
operate(java.lang.String operatorName, ScriptInstance anInstance, java.util.Stack passedInLocals)
apply operator operatorName on the values in the stack.
-
-
-
Method Detail
-
operate
Scalar operate(java.lang.String operatorName, ScriptInstance anInstance, java.util.Stack passedInLocals)
apply operator operatorName on the values in the stack.- Parameters:
operatorName
- the name of the operator, for example the String "+"anInstance
- instance of the script calling this operatorpassedInLocals
- a stack containing values the operator is to be applied to: [left hand side, right hand side]- Returns:
- a Scalar containing the result of the operatorName applied to the passedInLocals, in the case of "+" applied to [4, 3] we would get a Scalar containing the integer 7.
-
-