com.google.gwt.resources.gss.ast.CssRuntimeConditionalRuleNode Maven / Gradle / Ivy
/*
* Copyright 2014 Google Inc.
*
* 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.google.gwt.resources.gss.ast;
import com.google.gwt.thirdparty.common.css.compiler.ast.CssConditionalRuleNode;
import com.google.gwt.thirdparty.common.css.compiler.ast.CssValueNode;
import com.google.gwt.thirdparty.guava.common.base.Preconditions;
import com.google.gwt.thirdparty.guava.common.collect.ImmutableList;
/**
* Represents a conditional rule that needs to be evaluated at runtime.
*/
public class CssRuntimeConditionalRuleNode extends CssConditionalRuleNode {
public CssRuntimeConditionalRuleNode(CssConditionalRuleNode node,
CssJavaExpressionNode condition) {
super(node.getType(), node.getName().deepCopy(), null,
node.getBlock() != null ? node.getBlock().deepCopy() : null);
setSourceCodeLocation(node.getSourceCodeLocation());
setRuntimeCondition(condition);
}
/**
* Copy constructor.
*
* @param node
*/
public CssRuntimeConditionalRuleNode(CssRuntimeConditionalRuleNode node) {
this(node, node.getRuntimeCondition());
}
public CssJavaExpressionNode getRuntimeCondition() {
if (getType() == Type.ELSE) {
Preconditions.checkState(getParametersCount() == 0);
return null;
}
Preconditions.checkState(getParametersCount() == 1);
return (CssJavaExpressionNode) this.getParameters().get(0);
}
private void setRuntimeCondition(CssJavaExpressionNode condition) {
Preconditions.checkState(getType() != Type.ELSE);
Preconditions.checkState(getParametersCount() <= 1);
this.setParameters(ImmutableList.of(condition));
}
@Override
public CssConditionalRuleNode deepCopy() {
return new CssRuntimeConditionalRuleNode(this);
}
}