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/*
* Copyright (c) 2019-2020 Ronald Brill.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gargoylesoftware.css.parser;
/**
* Lexical unit of css values.
*
* @author Ronald brill
*/
public interface LexicalUnit {
/**
* Enum for the various unit types.
*/
enum LexicalUnitType {
OPERATOR_COMMA,
OPERATOR_PLUS,
OPERATOR_MINUS,
OPERATOR_MULTIPLY,
OPERATOR_SLASH,
OPERATOR_MOD,
OPERATOR_EXP,
OPERATOR_LT,
OPERATOR_GT,
OPERATOR_LE,
OPERATOR_GE,
OPERATOR_TILDE,
INHERIT,
INTEGER,
REAL,
EM,
REM,
EX,
CH,
VW,
VH,
VMIN,
VMAX,
PIXEL,
INCH,
CENTIMETER,
MILLIMETER,
POINT,
PICA,
PERCENTAGE,
URI,
COUNTER_FUNCTION,
COUNTERS_FUNCTION,
RGBCOLOR,
DEGREE,
GRADIAN,
RADIAN,
MILLISECOND,
SECOND,
HERTZ,
KILOHERTZ,
IDENT,
STRING_VALUE,
ATTR,
RECT_FUNCTION,
UNICODERANGE,
SUB_EXPRESSION,
FUNCTION,
DIMENSION
}
/**
* @return an integer indicating the type of LexicalUnit.
*/
LexicalUnitType getLexicalUnitType();
/**
* @return the next value or null if any.
*/
LexicalUnit getNextLexicalUnit();
/**
* @return the previous value or null if any.
*/
LexicalUnit getPreviousLexicalUnit();
/**
* @return the integer value.
*/
int getIntegerValue();
/**
* @return the double value.
*/
double getDoubleValue();
/**
* @return the string representation of the unit.
*/
String getDimensionUnitText();
/**
* @return the name of the function.
*/
String getFunctionName();
/**
* @return the function parameters including operators (like the comma).
*/
LexicalUnit getParameters();
/**
* @return the string value.
*/
String getStringValue();
/**
* @return a list of values inside the sub expression.
*/
LexicalUnit getSubValues();
/**
* @return the locator
*/
Locator getLocator();
/**
* @param locator the new locator
*/
void setLocator(Locator locator);
}
