info.bliki.wiki.template.expr

Class Parser

java.lang.Object

info.bliki.wiki.template.expr.Scanner

info.bliki.wiki.template.expr.Parser

public class Parser
extends Scanner

Create an expression of the ASTNode class-hierarchy from a math formulas string representation. See Operator -precedence parser for the idea, how to parse the operators depending on their precedence.

Field Summary

Fields inherited from class info.bliki.wiki.template.expr.Scanner

fCurrentChar, fCurrentColumnStartPosition, fCurrentPosition, fFactory, fInputString, fOperatorString, fOperList, fToken, numFormat, rowCount, TT_CONSTANT, TT_DIGIT, TT_EOF, TT_FLOATING_POINT, TT_OPERATOR, TT_PRECEDENCE_CLOSE, TT_PRECEDENCE_OPEN

Constructor Summary

Constructors

Constructor and Description
Parser()
Parser(boolean relaxedSyntax)
Parser(IParserFactory factory, boolean relaxedSyntax)

Method Summary

Modifier and Type	Method and Description
IParserFactory	getFactory()
ASTNode	parse(String expression) Parse the given expression String into an ASTNode.
void	setFactory(IParserFactory factory)

Methods inherited from class info.bliki.wiki.template.expr.Scanner

getIdentifier, getNextToken, getNumberString, getOperator, getStringBuffer, initialize, throwSyntaxError, throwSyntaxError

Methods inherited from class java.lang.Object

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

Constructor Detail

Parser

public Parser()

Parser

public Parser(boolean relaxedSyntax)
       throws SyntaxError

Throws:

SyntaxError

Parser

public Parser(IParserFactory factory,
              boolean relaxedSyntax)
       throws SyntaxError

Throws:

SyntaxError

Method Detail

setFactory

public void setFactory(IParserFactory factory)

getFactory

public IParserFactory getFactory()

parse

public ASTNode parse(String expression)
              throws SyntaxError

Parse the given expression String into an ASTNode.

Parameters:

expression - a formula string which should be parsed.

Returns:

the parsed ASTNode representation of the given formula string

Throws:

SyntaxError