UnaryExpr.java revision c6bcb7bf9cab139b3141c4644e5b3267deed5213 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.databinding.tool.expr;
18
19import android.databinding.tool.reflection.ModelAnalyzer;
20import android.databinding.tool.reflection.ModelClass;
21
22import java.util.List;
23
24public class UnaryExpr extends Expr {
25    final String mOp;
26    UnaryExpr(String op, Expr expr) {
27        super(expr);
28        mOp = op;
29    }
30
31    @Override
32    protected String computeUniqueKey() {
33        return sUniqueKeyJoiner.join(getOpStr(), getExpr().getUniqueKey());
34    }
35
36    @Override
37    protected ModelClass resolveType(ModelAnalyzer modelAnalyzer) {
38        return getExpr().resolveType(modelAnalyzer);
39    }
40
41    @Override
42    protected List<Dependency> constructDependencies() {
43        return constructDynamicChildrenDependencies();
44    }
45
46    private String getOpStr() {
47        switch (mOp.charAt(0)) {
48            case '~' : return "bitNot";
49            case '!' : return "logicalNot";
50            case '-' : return "unaryMinus";
51            case '+' : return "unaryPlus";
52        }
53        return mOp;
54    }
55
56    public String getOp() {
57        return mOp;
58    }
59
60    public Expr getExpr() {
61        return getChildren().get(0);
62    }
63}
64