com.bc.jexp

Interface Parser

All Known Implementing Classes:

ParserImpl

public interface Parser

Instances of the Parser interface are used to convert a code string representing an arithmetic expression in a tree of terms which can then be executed by using one of the evaluation methods of the Term class.

Version:

$Revision$ $Date$

Author:

Norman Fomferra (norman.fomferra@brockmann-consult.de)

Method Summary

Methods

Modifier and Type	Method and Description
Namespace	getDefaultNamespace() Gets this parser's default namespace.
Term	parse(String code) Parses the expression given in the code string.
Term	parse(String code, Namespace namespace) Parses the expression given in the code string.

Method Detail

getDefaultNamespace

Namespace getDefaultNamespace()

Gets this parser's default namespace.

Returns:

the default environment used to resolve names.

parse

Term parse(String code)
           throws ParseException

Parses the expression given in the code string. Names in the code string are resolved using the default namespace.

Parameters:

code - the code string, for the syntax of valid expressions refer to the class description

Throws:

ParseException - if a parse reportError occurs

parse

Term parse(String code,
         Namespace namespace)
           throws ParseException

Parses the expression given in the code string. Names in the code string are resolved using the given namespace.

Parameters:

code - the code string, for the syntax of valid expressions refer to the class description

namespace - the environment which is used to resolve names

Throws:

ParseException - if a parse error occurs