1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 * http://www.apache.org/licenses/LICENSE-2.0
7 * Unless required by applicable law or agreed to in writing, software
8 * distributed under the License is distributed on an "AS IS" BASIS,
9 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
10 * See the License for the specific language governing permissions and
11 * limitations under the License.
12 */
13
14 package android.databinding.tool.ext
15
16 import android.databinding.tool.expr.VersionProvider
17 import kotlin.properties.ReadOnlyProperty
18 import kotlin.reflect.KProperty
19
20 private class LazyExt<K, T>(private val initializer: (k : K) -> T) : ReadOnlyProperty<K, T> {
21 private val mapping = hashMapOf<K, T>()
getValuenull22 override fun getValue(thisRef: K, property: kotlin.reflect.KProperty<*>): T {
23 val t = mapping[thisRef]
24 if (t != null) {
25 return t
26 }
27 val result = initializer(thisRef)
28 mapping.put(thisRef, result)
29 return result
30 }
31 }
32
33 private class VersionedLazyExt<K, T>(private val initializer: (k : K) -> T) : ReadOnlyProperty<K, T> {
34 private val mapping = hashMapOf<K, VersionedResult<T>>()
35
getValuenull36 override fun getValue(thisRef: K, property: KProperty<*>): T {
37 val t = mapping[thisRef]
38 val version = if(thisRef is VersionProvider) thisRef.version else 1
39 if (t != null && version == t.version) {
40 return t.result
41 }
42 val result = initializer(thisRef)
43 mapping.put(thisRef, VersionedResult(version, result))
44 return result
45 }
46 }
47
48 data class VersionedResult<T>(val version : Int, val result : T)
49
lazyPropnull50 fun <K, T> lazyProp(initializer: (k : K) -> T): ReadOnlyProperty<K, T> = LazyExt(initializer)
51 fun <K, T> versionedLazy(initializer: (k : K) -> T): ReadOnlyProperty<K, T> = VersionedLazyExt(initializer)
52
53 public fun Class<*>.toJavaCode() : String {
54 if (name.startsWith('[')) {
55 val numArray = name.lastIndexOf('[') + 1;
56 val componentType : String;
57 when (name[numArray]) {
58 'Z' -> componentType = "boolean"
59 'B' -> componentType = "byte"
60 'C' -> componentType = "char"
61 'L' -> componentType = name.substring(numArray + 1, name.length - 1).replace('$', '.');
62 'D' -> componentType = "double"
63 'F' -> componentType = "float"
64 'I' -> componentType = "int"
65 'J' -> componentType = "long"
66 'S' -> componentType = "short"
67 else -> componentType = name.substring(numArray)
68 }
69 val arrayComp = name.substring(0, numArray).replace("[", "[]");
70 return componentType + arrayComp;
71 } else {
72 return name.replace("$", ".")
73 }
74 }
75
androidIdnull76 public fun String.androidId() : String = this.split("/")[1]
77
78 public fun String.toCamelCase() : String {
79 val split = this.split("_")
80 if (split.size == 0) return ""
81 if (split.size == 1) return split[0].capitalize()
82 return split.joinToCamelCase()
83 }
84
toCamelCaseAsVarnull85 public fun String.toCamelCaseAsVar() : String {
86 val split = this.split("_")
87 if (split.size == 0) return ""
88 if (split.size == 1) return split[0]
89 return split.joinToCamelCaseAsVar()
90 }
91
brnull92 public fun String.br() : String =
93 "BR.${if (this == "") "_all" else this}"
94