Package com.googlecode.aviator

Interface Expression

All Known Implementing Classes:

BaseExpression, ClassExpression, LiteralExpression

public interface Expression

A expression

Author:

dennis

Method Summary

Modifier and Type	Method	Description
String	addSymbol(String name)	Adds the specified symbol to the symbol table and returns a reference to the unique symbol.
Object	execute()	Execute expression with empty environment
Object	execute(Map<String,Object> env)	Execute expression with environment
List<String>	getVariableFullNames()	Returns this expression's all variable full names in order when using AviatorEvaluator.EVAL mode,else returns empty set
List<String>	getVariableNames()	Returns this expression's all variable names in order when using AviatorEvaluator.EVAL mode,else returns empty set
Map<String,Object>	newEnv(Object... args)	Created a faster env map(compare variable names by reference).The arguments should be a sequence of pair .

Method Detail

execute

Object execute(Map<String,Object> env)

Execute expression with environment

Parameters:

env - Binding variable environment

Returns:

execute

Object execute()

Execute expression with empty environment

Returns:

getVariableNames

List<String> getVariableNames()

Returns this expression's all variable names in order when using AviatorEvaluator.EVAL mode,else returns empty set

Returns:

See Also:

AviatorEvaluator.EVAL

getVariableFullNames

List<String> getVariableFullNames()

Returns this expression's all variable full names in order when using AviatorEvaluator.EVAL mode,else returns empty set

Returns:

newEnv

Map<String,Object> newEnv(Object... args)

Created a faster env map(compare variable names by reference).The arguments should be a sequence of pair .

Parameters:

args -

Returns:

an env map

addSymbol

String addSymbol(String name)

Adds the specified symbol to the symbol table and returns a reference to the unique symbol. If the symbol already exists, the previous symbol reference is returned instead, in order guarantee that symbol references remain unique.

Parameters:

name - The symbol name.