Package com.singularsys.jep.misc.javaops
Class TernaryConditional
java.lang.Object
com.singularsys.jep.functions.PostfixMathCommand
com.singularsys.jep.misc.javaops.TernaryConditional
- All Implemented Interfaces:
CallbackEvaluationI
,PostfixMathCommandI
,Serializable
Implements the
condition ? x : y
behaviour
Since 4.0 this now operates in a lazy fashion so only the needed branch is evaluated.- See Also:
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Field Summary
Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand
curNumberOfParameters, name, NaN, numberOfParameters
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Constructor Summary
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Method Summary
Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand
asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString
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Constructor Details
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TernaryConditional
public TernaryConditional()
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Method Details
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run
Description copied from class:PostfixMathCommand
Throws an exception because this method should never be called under normal circumstances. Each function should use its ownrun()
method for evaluating the function. This includes popping off the parameters from the stack, and pushing the result back on the stack.- Specified by:
run
in interfacePostfixMathCommandI
- Overrides:
run
in classPostfixMathCommand
- Parameters:
aStack
- arguments for function- Throws:
EvaluationException
- if function cannot be evaluated
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evaluate
Description copied from interface:CallbackEvaluationI
Performs some special evaluation on the node. This method has the responsibility for evaluating the children of the node, and it should generally callpv.eval(node.jjtGetChild(i))
for each child. The SymbolTable is not passed as an argument. This is because it is better practice to get and set variable values by using node.getVar().setValue() rather that through the SymbolTable with requires a hashtable lookup.- Specified by:
evaluate
in interfaceCallbackEvaluationI
- Parameters:
node
- The current nodepv
- The visitor, can be used evaluate the children- Returns:
- the value after evaluation. This value will be passed to other functions higher up the node tree. The value can be any type including Double or Vector<Object>
- Throws:
EvaluationException
- if the calculation cannot be performed- Since:
- 4.0
- See Also:
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