Package com.googlecode.aviator.runtime.function

Class FunctionUtils

java.lang.Object

com.googlecode.aviator.runtime.function.FunctionUtils

public class FunctionUtils
extends Object

Function helper

Author:

dennis

Constructor Summary

Constructors

Constructor	Description
FunctionUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	getBooleanValue(AviatorObject arg, Map<String,Object> env)	Get boolean value from env.
static AviatorFunction	getFunction(AviatorObject arg, Map<String,Object> env, int arity)	Get a function from env in follow orders: arg value env current evaluator instance.
static List<FunctionArgument>	getFunctionArguments(Map<String,Object> env)	Retrieve the invocation arguments info from env, returns null when absent.
static Object	getJavaObject(AviatorObject arg, Map<String,Object> env)	get a object from env
static Number	getNumberValue(AviatorObject arg1, Map<String,Object> env)	Get a number from env.
static String	getStringValue(AviatorObject arg, Map<String,Object> env)	Get string value from env.
static AviatorObject	wrapReturn(Object ret)	Wraps the object as aviator object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FunctionUtils

public FunctionUtils()

Method Detail

getFunctionArguments

public static List<FunctionArgument> getFunctionArguments(Map<String,Object> env)

Retrieve the invocation arguments info from env, returns null when absent.

Parameters:

env -

Returns:

getBooleanValue

public static final boolean getBooleanValue(AviatorObject arg,
                                            Map<String,Object> env)

Get boolean value from env.

Parameters:

arg - the var name

env -

Returns:

getStringValue

public static final String getStringValue(AviatorObject arg,
                                          Map<String,Object> env)

Get string value from env.

Parameters:

arg - the var name

env -

Returns:

getJavaObject

public static Object getJavaObject(AviatorObject arg,
                                   Map<String,Object> env)

get a object from env

Parameters:

arg - the var name

env -

Returns:

getFunction

public static AviatorFunction getFunction(AviatorObject arg,
                                          Map<String,Object> env,
                                          int arity)

Get a function from env in follow orders:

• arg value
• env
• current evaluator instance.

Parameters:

arg -

env -

arity -

Returns:

getNumberValue

public static final Number getNumberValue(AviatorObject arg1,
                                          Map<String,Object> env)

Get a number from env.

Parameters:

arg1 - the var

env -

Returns:

wrapReturn

public static AviatorObject wrapReturn(Object ret)

Wraps the object as aviator object.

Parameters:

ret - the java object

Returns:

wrapped aviator object

Since:

4.2.5