com.eteks.jeks
Class JeksFunctionParser

java.lang.Object
  |
  +--com.eteks.parser.Parser
        |
        +--com.eteks.parser.FunctionParser
              |
              +--com.eteks.jeks.JeksFunctionParser

public class JeksFunctionParser

extends FunctionParser

Parser for functions entered by user.

Since:

Jeks 1.0

Version:

1.0

Author:

Emmanuel Puybaret

Constructor Summary

JeksFunctionParser()
Creates a function parser using an instance JeksFunctionSyntax as syntax.

JeksFunctionParser(JeksFunctionSyntax syntax)
Creates a function parser that uses the function syntax syntax.

Method Summary

CompiledFunction

compileFunction(java.lang.String functionDefinition) Compiles the definition of a function functionDefinition and returns the instance of CompiledFunction matching the definition.

Methods inherited from class com.eteks.parser.FunctionParser

getSyntax

Methods inherited from class java.lang.Object

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

Constructor Detail

JeksFunctionParser

public JeksFunctionParser()

Creates a function parser using an instance JeksFunctionSyntax as syntax.

JeksFunctionParser

public JeksFunctionParser(JeksFunctionSyntax syntax)

Creates a function parser that uses the function syntax syntax.

Method Detail

compileFunction

public CompiledFunction compileFunction(java.lang.String functionDefinition)
                                 throws CompilationException

Description copied from class: FunctionParser

Compiles the definition of a function functionDefinition and returns the instance of CompiledFunction matching the definition. This method builds a tree of type ExpressionNode matching the expression of the function. This tree is used to compute the value of a function at interpretation time.

Overrides:

compileFunction in class FunctionParser

Following copied from class: com.eteks.parser.FunctionParser

Parameters:

functionDefinition - the definition of the function.

Returns:

an instance of CompiledFunction, with which values can be computed.

Throws:

CompilationException - if the syntax of the function is incorrect or if some elements (literals, constants, operators, functions,...) of its expression are not accepted by the syntax of the parser.