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package com.vaadin.sass.tree;
import java.util.ArrayList;
import com.vaadin.sass.parser.LexicalUnitImpl;
import com.vaadin.sass.util.DeepCopy;
public class ListRemoveNode extends Node implements ListModifyNode,
IVariableNode {
private ArrayList<String> list;
private ArrayList<String> remove;
private String separator;
public ListRemoveNode(ArrayList<String> list, ArrayList<String> remove,
String separator) {
this.list = list;
this.remove = remove;
this.separator = separator;
}
@Override
public boolean isModifyingVariable() {
if (list != null) {
return list.size() == 1 && list.get(0).startsWith("$");
}
return false;
}
@Override
public String getVariable() {
if (list != null && list.size() == 1) {
String string = list.get(0);
return string.substring(1, string.length());
}
return null;
}
@Override
public VariableNode getModifiedList(VariableNode variableNode) {
VariableNode clone = (VariableNode) DeepCopy.copy(variableNode);
LexicalUnitImpl first = null;
LexicalUnitImpl current = clone.getExpr();
LexicalUnitImpl lastAccepted = null;
while (current != null) {
if (shouldInclude(current, lastAccepted)) {
LexicalUnitImpl temp = current.clone();
temp.setNextLexicalUnit(null);
if (lastAccepted != null) {
lastAccepted.setNextLexicalUnit(temp);
}
lastAccepted = temp;
if (first == null) {
first = lastAccepted;
}
}
current = current.getNextLexicalUnit();
}
clone.setExpr(first);
return clone;
}
private boolean shouldInclude(LexicalUnitImpl current,
LexicalUnitImpl lastAccepted) {
if (lastAccepted != null
&& lastAccepted.getLexicalUnitType() == LexicalUnitImpl.SAC_OPERATOR_COMMA
&& current.getLexicalUnitType() == LexicalUnitImpl.SAC_OPERATOR_COMMA) {
return false;
}
String string = current.getValue().toString();
for (final String s : remove) {
if (s.equals(string)) {
return false;
}
}
return true;
}
@Override
public void replaceVariables(ArrayList<VariableNode> variables) {
ArrayList<String> newList = new ArrayList<String>();
for (final String removeVar : remove) {
if (!removeVar.startsWith("$")) {
continue;
}
for (final VariableNode var : variables) {
if (removeVar.equals("$" + var.getName())) {
LexicalUnitImpl expr = var.getExpr();
while (expr != null) {
newList.add(expr.getValue().toString());
expr = expr.getNextLexicalUnit();
}
}
}
}
if (newList.size() > 0) {
remove = newList;
}
}
}
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