Code drop

.gitignore

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+###OSX###
+
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must ends with two \r.
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear on external disk
+.Spotlight-V100
+.Trashes
+
+
+###Linux###
+
+*~
+
+# KDE directory preferences
+.directory
+
+
+###Android###
+
+# Built application files
+*.apk
+*.ap_
+
+# Files for ART and Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+.gradletasknamecache
+build/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Lint
+lint-report.html
+lint-report_files/
+lint_result.txt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+
+###IntelliJ###
+
+*.iml
+*.ipr
+*.iws
+.idea/
+
+
+###Eclipse###
+
+*.pydevproject
+.metadata
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+.settings/
+.loadpath
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# TeXlipse plugin
+.texlipse

README.md

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+CopyDynamic
+===========
+
+PoC prototype of generating `copyDynamic` extension functions for data classes, such that you can do this:
+
+```kotlin
+@CopyDynamic
+data class Foo(val bar: String = "bar", val baz: String = "baz", val fizz: String = "fizz")
+```
+
+And have a `copyDynamic` extension function generated to allow for dynamic setting of variables in a copy call.
+
+```kotlin
+val foo = Foo()
+
+val newFoo = foo.copyDynamic {
+  bar = "newBar"
+  if (someCondition) baz = "newBaz"
+}
+```
+
+
+
+License
+-------
+
+    Copyright (C) 2018 Zac Sweers
+
+    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.

build.gradle

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+/*
+ * Copyright (c) 2018 Zac Sweers
+ *
+ * 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.
+ */
+
+allprojects {
+  buildscript {
+    repositories {
+      mavenCentral()
+    }
+  }
+  repositories {
+    mavenCentral()
+  }
+}

copydynamic-annotations/build.gradle

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+/*
+ * Copyright (c) 2018 Zac Sweers
+ *
+ * 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.
+ */
+
+buildscript {
+  ext.kotlin_version = '1.2.41'
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+group 'com.example'
+version '1.0-SNAPSHOT'
+
+apply plugin: 'org.jetbrains.kotlin.jvm'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+
+compileKotlin {
+  kotlinOptions {
+    freeCompilerArgs = ['-Xjsr305=strict']
+  }
+}

copydynamic-annotations/src/main/kotlin/io/sweers/copydynamic/annotations/CopyDynamic.kt

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+/*
+ * Copyright (c) 2018 Zac Sweers
+ *
+ * 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 io.sweers.copydynamic.annotations
+
+import kotlin.annotation.AnnotationRetention.BINARY
+import kotlin.annotation.AnnotationTarget.CLASS
+import kotlin.annotation.AnnotationTarget.TYPE
+
+@Target(TYPE, CLASS)
+@Retention(BINARY)
+annotation class CopyDynamic

copydynamic/build.gradle

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+/*
+ * Copyright (c) 2018 Zac Sweers
+ *
+ * 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.
+ */
+
+buildscript {
+  ext.kotlin_version = '1.2.41'
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+apply plugin: 'org.jetbrains.kotlin.jvm'
+apply plugin: 'org.jetbrains.kotlin.kapt'
+
+repositories {
+  mavenCentral()
+  maven {
+    url "https://kotlin.bintray.com/kotlinx"
+  }
+}
+
+dependencies {
+  kapt "com.google.auto.service:auto-service:1.0-rc4"
+  compileOnly "com.google.auto.service:auto-service:1.0-rc4"
+
+  compile project(':copydynamic-annotations')
+
+  compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+  compile 'com.squareup:kotlinpoet:0.7.0'
+  compile 'org.jetbrains.kotlinx:kotlinx-metadata-jvm:0.0.2'
+}
+
+compileKotlin {
+  kotlinOptions {
+    jvmTarget = "1.8"
+    freeCompilerArgs = ['-Xjsr305=strict']
+  }
+}