FunctionEvaluator

java.lang.Object
- io.github.erdos.stencil.functions.FunctionEvaluator

public final class FunctionEvaluator
extends java.lang.Object

Constructor Summary

Constructors
Constructor Description

FunctionEvaluator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.Object`	`call(java.lang.String functionName, java.lang.Object... arguments)`	Calls a function by name.
`java.lang.Iterable<Function>`	`listFunctions()`	Returns a thread-safe sequence of all registered functions.
`void`	`registerFunctions(Function... functions)`	Registers a function to this evaluator engine.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FunctionEvaluator
```
public FunctionEvaluator()
```
- Method Detail
  - registerFunctions
```
public void registerFunctions(Function... functions)
```
    Registers a function to this evaluator engine. Registered functions can be invoked from inside template files.
    
    Parameters:
    
    functions - list of functions to register
  - call
```
public java.lang.Object call(java.lang.String functionName,
                             java.lang.Object... arguments)
```
    Calls a function by name.
    
    Parameters:
    
    functionName - Case Insensitive name of fn to call.
    
    arguments - arguments dispatched to called function
    
    Returns:
    
    result of function call
    
    Throws:
    
    java.lang.IllegalArgumentException - when function name is null or missing
  - listFunctions
```
public java.lang.Iterable<Function> listFunctions()
```
    Returns a thread-safe sequence of all registered functions.