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.properties.Delegates 19 import android.databinding.tool.ext.joinToCamelCase 20 import android.databinding.tool.ext.joinToCamelCaseAsVar 21 import android.databinding.tool.reflection.ModelAnalyzer 22 import android.databinding.tool.reflection.ModelClass 23 import android.databinding.tool.reflection.ModelAnalyzer 24 25 private class LazyExt<K, T>(private val initializer: (k : K) -> T) : ReadOnlyProperty<K, T> { 26 private val mapping = hashMapOf<K, T>() 27 override fun get(thisRef: K, desc: PropertyMetadata): T { 28 val t = mapping.get(thisRef) 29 if (t != null) { 30 return t 31 } 32 val result = initializer(thisRef) 33 mapping.put(thisRef, result) 34 return result 35 } 36 } 37 38 private class VersionedLazyExt<K, T>(private val initializer: (k : K) -> T) : ReadOnlyProperty<K, T> { 39 private val mapping = hashMapOf<K, VersionedResult<T>>() 40 override fun get(thisRef: K, desc: PropertyMetadata): T { 41 val t = mapping.get(thisRef) 42 val version = if(thisRef is VersionProvider) thisRef.getVersion() else 1 43 if (t != null && version == t.version) { 44 return t.result 45 } 46 val result = initializer(thisRef) 47 mapping.put(thisRef, VersionedResult(version, result)) 48 return result 49 } 50 } 51 52 data class VersionedResult<T>(val version : Int, val result : T) 53 54 fun Delegates.lazy<K, T>(initializer: (k : K) -> T): ReadOnlyProperty<K, T> = LazyExt(initializer) 55 fun Delegates.versionedLazy<K, T>(initializer: (k : K) -> T): ReadOnlyProperty<K, T> = VersionedLazyExt(initializer) 56 57 public fun Class<*>.toJavaCode() : String { 58 val name = getName(); 59 if (name.startsWith('[')) { 60 val numArray = name.lastIndexOf('[') + 1; 61 val componentType : String; 62 when (name.charAt(numArray)) { 63 'Z' -> componentType = "boolean" 64 'B' -> componentType = "byte" 65 'C' -> componentType = "char" 66 'L' -> componentType = name.substring(numArray + 1, name.length() - 1).replace('$', '.'); 67 'D' -> componentType = "double" 68 'F' -> componentType = "float" 69 'I' -> componentType = "int" 70 'J' -> componentType = "long" 71 'S' -> componentType = "short" 72 else -> componentType = name.substring(numArray) 73 } 74 val arrayComp = name.substring(0, numArray).replace("[", "[]"); 75 return componentType + arrayComp; 76 } else { 77 return name.replace("$", ".") 78 } 79 } 80 81 public fun String.androidId() : String = this.splitBy("/")[1] 82 83 public fun String.toCamelCase() : String { 84 val split = this.splitBy("_") 85 if (split.size() == 0) return "" 86 if (split.size() == 1) return split[0].capitalize() 87 return split.joinToCamelCase() 88 } 89 90 public fun String.toCamelCaseAsVar() : String { 91 val split = this.splitBy("_") 92 if (split.size() == 0) return "" 93 if (split.size() == 1) return split[0] 94 return split.joinToCamelCaseAsVar() 95 } 96 97 public fun String.br() : String = 98 "BR.${if (this == "") "_all" else this}" 99