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/*******************************************************************************
* Copyright (c) 2015 protos software gmbh (http://www.protos.de).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* CONTRIBUTORS:
* Juergen Haug (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.expressions.detailcode
import com.google.common.collect.ImmutableList
import java.util.List
import org.eclipse.xtend.lib.annotations.Accessors
/**
* Defines detail expressions = <i>ExpressionFeature ('.' ExpressionFeature)* </i>
*/
interface IDetailExpressionProvider {
static val char SEPARATOR = '.'
/**
* A list of ExpressionFeatures, without preceding '.' and that can start a context
* @return not null
*/
def List<ExpressionFeature> getInitialFeatures()
/**
* A list of ExpressionFeatures, that can follow ctx
* @param ctx having non-null entries
* @return not null
*/
def List<ExpressionFeature> getContextFeatures(ExpressionFeature ctx)
/**
* ExpressionFeature = <i>id(postfix)?</i> with <i> postfix = '(' .* ')' | '[' .* ']'
*/
@Accessors // @Data
static class ExpressionFeature {
val String id
val ExpressionPostfix postfix
Object data
}
enum ExpressionPostfix {
NONE,
PARENTHESES,
BRACKETS
}
static class EmptyDetailExpressionProvider implements IDetailExpressionProvider {
val List<ExpressionFeature> EMPTY_LIST = ImmutableList.of
override List<ExpressionFeature> getInitialFeatures() {
return EMPTY_LIST;
}
override List<ExpressionFeature> getContextFeatures(ExpressionFeature ctx) {
return EMPTY_LIST;
}
}
}
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