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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 android.databinding.tool.expr;
import android.databinding.tool.reflection.ModelAnalyzer;
import android.databinding.tool.reflection.ModelClass;
import android.databinding.tool.writer.KCode;
import java.util.List;
public class ComparisonExpr extends Expr {
final String mOp;
ComparisonExpr(String op, Expr left, Expr right) {
super(left, right);
mOp = op;
}
@Override
protected String computeUniqueKey() {
return join(mOp, super.computeUniqueKey());
}
@Override
protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) {
return modelAnalyzer.loadPrimitive("boolean");
}
@Override
protected List<Dependency> constructDependencies() {
return constructDynamicChildrenDependencies();
}
public String getOp() {
return mOp;
}
public Expr getLeft() {
return getChildren().get(0);
}
public Expr getRight() {
return getChildren().get(1);
}
@Override
public boolean isEqualityCheck() {
return "==".equals(mOp.trim());
}
@Override
protected KCode generateCode(boolean expand) {
return new KCode().app("", getLeft().toCode(expand))
.app(" ").app(getOp()).app(" ")
.app("", getRight().toCode(expand));
}
@Override
public String getInvertibleError() {
return "Comparison operators are not valid as targets of two-way binding";
}
}
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