org.foray.fotree.parse
Class PropertyParser

java.lang.Object
  org.foray.fotree.parse.PropertyParser

public final class PropertyParser
extends Object

Class to parse XSL FO property expression. This class is heavily based on the epxression parser in James Clark's XT, an XSLT processor.

Method Summary

int	getCurrentToken() Returns the current token.
String	getCurrentTokenValue() Returns the current token value.
int	getCurrentUnitLength() Returns the current unit length.
static PropertyValue	parse(FObj fobj, String expr, PropertyType propertyType) Public entrypoint to the Property expression parser.
void	popFunction() Pops an item off of the function stack.
void	pushFunction(Function func) Pushes a function onto the stack of functions being evaluated.

Methods inherited from class java.lang.Object

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

Method Detail

parse

public static PropertyValue parse(FObj fobj,
                                  String expr,
                                  PropertyType propertyType)
                           throws PropertyException

Public entrypoint to the Property expression parser.

Parameters:

expr - The specified value (attribute on the xml element).

fobj - The parent FObj of the expression being parsed.

propertyType - The property type for which the value is being parsed. This is needed for some functions, for example "from-parent".

Returns:

A PropertyValue instance holding the parsed result.

Throws:

PropertyException - If the "expr" cannot be parsed as a Property.

pushFunction

public void pushFunction(Function func)

Pushes a function onto the stack of functions being evaluated.

Parameters:

func - The function to push onto the stack.

popFunction

public void popFunction()

Pops an item off of the function stack.

getCurrentTokenValue

public String getCurrentTokenValue()

Returns the current token value.

Returns:

Returns the currentTokenValue.

getCurrentToken

public int getCurrentToken()

Returns the current token.

Returns:

Returns the currentToken.

getCurrentUnitLength

public int getCurrentUnitLength()

Returns the current unit length.

Returns:

Returns the currentUnitLength.