Module io.sf.carte.css4j

Package io.sf.carte.doc.style.css.property

Class ExpressionFactory

java.lang.Object

io.sf.carte.doc.style.css.property.ExpressionFactory

public class ExpressionFactory
extends Object

Expressions factory.

Constructor Summary

Constructors

Constructor	Description
ExpressionFactory(LexicalUnit nextLexicalUnit)	Creates an expression factory.

Method Summary

Modifier and Type	Method	Description
CSSExpression	createExpression(LexicalUnit calcParams)	Create an expression from the given lexical unit.
protected CSSValueFactory	getCSSValueFactory()	Get a value factory.
LexicalUnit	getNextLexicalUnit()	Gives the next lexical unit.
protected boolean	isCalcValue()	Check whether this is the expression in a calc() value or a sub-expression in some mathematical function.
protected boolean	isInvalidOperand(CSSPrimitiveValue primi, LexicalUnit.LexicalType lutype, LexicalUnit.LexicalType lastlutype)

Methods inherited from class java.lang.Object

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

Constructor Details

ExpressionFactory

public ExpressionFactory(LexicalUnit nextLexicalUnit)

Creates an expression factory.

Parameters:

nextLexicalUnit - the next lexical unit, or null if none.

Method Details

getNextLexicalUnit

public LexicalUnit getNextLexicalUnit()

Gives the next lexical unit. It could be the next lexical unit of the parent value, or an operator that was found while producing an expression.

This method should be called after calling createExpression(LexicalUnit), not before.

Returns:

the next lexical unit.

createExpression

public CSSExpression createExpression(LexicalUnit calcParams)

Create an expression from the given lexical unit.

Parameters:

calcParams - the lexical unit(s) of the operands.

Returns:

the expression.

getCSSValueFactory

protected CSSValueFactory getCSSValueFactory()

Get a value factory.

Returns:

the value factory.

isInvalidOperand

protected boolean isInvalidOperand(CSSPrimitiveValue primi,
 LexicalUnit.LexicalType lutype,
 LexicalUnit.LexicalType lastlutype)

isCalcValue

protected boolean isCalcValue()

Check whether this is the expression in a calc() value or a sub-expression in some mathematical function.

Returns:

true if the expression belongs to a calc() value.