CHANGELOG

1.1.1

IDE

• KT-16714 J2K: Write access is allowed from event dispatch thread only

Compiler

• KT-16801 Accessors of @PublishedApi property gets mangled
• KT-16673 Potentially problematic code causes exception when work with SAM adapters

Libraries

• KT-16557 Correct SinceKotlin(1.1) for all declarations in kotlin.reflect.full

1.1.1-RC

IDE

• KT-16481 Kotlin debugger & bytecode fail on select statement blocks (IllegalStateException: More than one package fragment)

Gradle support

• KT-15783 Gradle builds don't use incremental compilation due to an error: “Could not connect to kotlin daemon”
• KT-16434 Gradle plugin does not compile androidTest sources when Jack is enabled
• KT-16546 Enable incremental compilation in gradle by default

Compiler

• KT-16184 AbstractMethodError in Kapt3ComponentRegistrar while compiling from IntelliJ using Kotlin 1.1.0
• KT-16578 Fix substitutor for synthetic SAM adapters
• KT-16581 VerifyError when calling default value parameter with jvm-target 1.8
• KT-16583 Cannot access private file-level variables inside a class init within the same file if a secondary constructor is present
• KT-16587 AbstractMethodError: Delegates not generated correctly for private interfaces
• KT-16598 Incorrect error: The feature “bound callable references” is only available since language version 1.1
• KT-16621 Kotlin compiler doesn‘t report an error if a class implements Annotation interface but doesn’t implement annotationType method
• KT-16441 NoSuchFieldError: $$delegatedProperties when delegating through provideDelegate in companion object

JavaScript support

• Prohibit function types with receiver as parameter types of external declarations
• Remove extension receiver for function parameters in jQuery declarations

1.1

Compiler exceptions

• KT-16411 Exception from compiler when try to inline callable reference to class constructor inside object
• KT-16412 Exception from compiler when try call SAM constructor where argument is callable reference to nested class inside object
• KT-16413 When we create sam adapter for java.util.function.Function we add incorrect null-check for argument

Standard library

• KT-6561 Drop java.util.Collections package from js stdlib
• javaClass extension property is no more deprecated due to migration problems

IDE

• KT-16329 Inspection “Calls to staic methods in Java interfaces...” always reports warning undependent of jvm-target

1.1-RC

Reflection

• KT-16358 Incompatibility between kotlin-reflect 1.0 and kotlin-stdlib 1.1 fixed

Compiler

Coroutine support

• KT-15938 Changed error message for calling suspend function outside of suspendable context
• KT-16092 Backend crash fixed: “Don't know how to generate outer expression” for destructuring suspend lambda
• KT-16093 Annotations are retained during reading the binary representation of suspend functions
• KT-16122 java.lang.VerifyError fixed in couroutines: (String, null, suspend () -> String)
• KT-16124 Marked as UNSUPPORTED: suspension points in default parameters
• KT-16219 Marked as UNSUPPORTED: suspend get/set, in/!in operators for
• KT-16145 Beta-2 coroutine regression fixed (wrong code generation)

Kapt3

• KT-15524 Fix javac error reporting in Kotlin daemon
• KT-15721 JetBrains nullability annotations are now returned from Element.getAnnotationMirrors()
• KT-16146 Fixed work in verbose mode
• KT-16153 Ignore declarations with illegal Java identifiers
• KT-16167 Fixed compilation error with kapt arguments in build.gradle
• KT-16170 Stub generator now adds imports for corrected error types to stubs
• KT-16176 javac's finalCompiler log is now used to determine annotation processing errors

Backward compatibility

• KT-16017 More graceful error message for disabled features
• KT-16073 Improved backward compatibility mode with version 1.0 on JDK dependent built-ins
• KT-16094 Compiler considers API availability when compiling language features requiring runtime support
• KT-16171 Fixed regression “Unexpected container error on Kotlin 1.0 project”
• KT-16199 Do not import “kotlin.comparisons.*” by default in language version 1.0 mode

Various issues

• KT-16225 enumValues non-reified stub implementation references nonexistent method no more
• KT-16291 Smart cast works now when getting class of instance
• KT-16380 Show warning when running the compiler under Java 6 or 7

JavaScript backend

• KT-16144 Fixed inlining of functions called through inheritor (“fake” override) from another module
• KT-16158 Error is not reported now when library path contains JAR file without JS metadata, report warning instead
• KT-16160 Companion object dispatch receiver translation fixed

Standard library

• KT-7858 Add extension function takeUnless
• javaClass extension property is deprecated, use instance::class.java instead
• Massive deprecations are coming in JS standard library in kotlin.dom and kotlin.dom.build packages

IDE

Configuration issues

• KT-15899 Kotlin facet: language and api version for submodule setup for 1.0 are filled now as 1.0 too
• KT-15914 Kotlin facet works now with multi-selected modules in Project Settings too
• KT-15954 Does not suggest to configure kotlin for the module after each new kt-file creation
• KT-16157 freeCompilerArgs are now imported from Gradle into IDEA
• KT-16206 Idea no more refuses to compile a kotlin project defined as a maven project
• KT-16312 Kotlin facet: import from gradle: don't import options which are set implicitly already
• KT-16325 Kotlin facet: correct configuration after upgrading the IDE plugin
• KT-16345 Kotlin facet: detect JavaScript if the module has language 1.0 kotlin-js-library dependency

Coroutine support

• KT-16109 Error fixed: The -Xcoroutines can only have one value
• KT-16251 Fix detection of suspend calls containing extracted parameters

Intention actions, inspections and quick-fixes

2017.1 compatibility

• KT-15870 “Package name does not match containing directory” inspection: fixed throwable “AWT events are not allowed inside write action”
• KT-15924 Create Test action: fixed throwable “AWT events are not allowed inside write action”

Bug fixes

• KT-14831 Import statement and FQN are not added on converting lambda to reference for typealias
• KT-15545 Inspection “join with assignment” does not change now execution order for properties
• KT-15744 Fix: intention to import sleep wrongly suggests Thread.sleep
• KT-16000 Inspection “join with assignment” handles initialization with ‘this’ correctly
• KT-16009 Auto-import for JDK classes in .kts files
• KT-16104 Don't insert modifiers (e.g. suspend) before visibility

Completion

• KT-16076 Completion does not insert more FQN kotlin.text.String
• KT-16088 Completion does not insert more FQN for kotlin package
• KT-16110 Keyword ‘suspend’ completion inside generic arguments
• KT-16243 Performance enhanced after variable of type ArrayList

Various issues

• KT-15291 ‘Find usages’ now does not report property access as usage of getter method in Java class with parameter
• KT-15647 Exception fixed: KDoc link to member of class from different package and module
• KT-16071 IDEA deadlock fixed: when typing “parse()” in .kt file
• KT-16149 Intellij Idea 2017.1/Android Studio 2.3 beta3 and Kotlin plugin 1.1-beta2 deadlock fixed

Coroutine libraries

• KT-15716 Introduced startCoroutineUninterceptedOrReturn coroutine intrinsic
• KT-15718 createCoroutine now returns safe continuation
• KT-16155 Introduced createCoroutineUnchecked intrinsic

Gradle support

• KT-15829 Gradle Kotlin JS plugin: removed false “Duplicate source root:” warning for kotlin files
• KT-15902 JS: gradle task output is now considered as source set output
• KT-16174 Error fixed during IDEA-Gradle synchronization for Kotlin JS
• KT-16267 JS: fixed regression in 1.1-beta2 for multi-module gradle project
• KT-16274 Kotlin JS Gradle unexpected compiler error / absolute path to output file
• KT-16322 Circlet project Gradle import issue fixed

REPL

• KT-15861 Use windows line separator in kotlin's JSR implementation
• KT-16126 Proper jvmTarget for REPL compilation

1.1-Beta2

Language related changes

• KT-7897 Do not require to call enum constructor for each entry if all parameters have default values
• KT-8985 Support T::class.java for T with no non-null upper bound
• KT-10711 Type inference works now on generics for callable references
• KT-13130 Support exhaustive when for sealed trees
• KT-15898 Cannot use type alias to qualify enum entry
• KT-16061 Smart type inference on callable references in 1.1 mode only

Reflection

• KT-8384 Access to the delegate object for a KProperty

Compiler

Coroutine support

• KT-15016 VerifyError with coroutine: fix processing of uninitialized instances
• KT-15527 Coroutine compile error: wrong code generated for safe qualified suspension points
• KT-15552 Accessor implementation of suspended function produces AbstractMethodError
• KT-15715 Coroutine generate invalid invoke
• KT-15820 Coroutine Internal Error regression with dispatcher + this@
• KT-15821 Coroutine internal error regression: Could not inline method call apply
• KT-15824 Coroutine iterator regression: Object cannot be cast to java.lang.Boolean
• KT-15827 Show Kotlin Bytecode shows wrong bytecode for suspending functions
• KT-15907 Bogus error about platform declaration clash with private suspend functions
• KT-15933 Suspend getValue/setValue/provideDelegate do not work properly
• KT-15935 Private suspend function in file causes UnsupportedOperationException: Context does not have a “this”
• KT-15963 Coroutine: runtime error if returned object “equals” does not like comparison to SUSPENDED_MARKER
• KT-16068 Prohibit inline lambda parameters of suspend function type

Diagnostics

• KT-1560 Report diagnostic for a declaration of extension function which will be always shadowed by member function
• KT-12846 Forbid vararg of Nothing
• KT-13227 NO_ELSE_IN_WHEN in when by sealed class instance if is-check for base sealed class is used
• KT-13355 Type mismatch on inheritance is not reported on abstract class
• KT-15010 Missing error on an usage of non-constant property in annotation default argument
• KT-15201 Compiler is complaining about when statement without null condition even if null is checked before.
• KT-15736 Report an error on type alias expanded to a nullable type on LHS of a class literal
• KT-15740 Report error on expression of a nullable type on LHS of a class literal
• KT-15844 Do not allow to access primary constructor parameters from property with custom getter
• KT-15878 Extension shadowed by member should not be reported for infix/operator extensions when member is non-infix/operator
• KT-16010 Do not highlight lambda parameters as unused in 1.0 compatibility mode

Kapt

• KT-15675 Kapt3 does not generate classes annotated with AutoValue
• KT-15697 If an annotation with AnnotationTarget.PROPERTY is tagged on a Kotlin property, it breaks annotation processing
• KT-15803 Kotlin 1.0.6 broke Dagger
• KT-15814 Regression: Kapt is not working in 1.0.6 / 1.1-M04 / 1.1-Beta
• KT-15838 kapt3 1.1-beta: KaptError: Java file parsing error
• KT-15841 1.1-Beta + kapt3 fails to build the project with StackOverflowError
• KT-15915 Kapt: Kotlin class target directory is cleared before compilation (and after kapt task)
• KT-16006 Cannot determine if type is an error type during annotation processing

Exceptions / Errors

• KT-8264 Internal compiler error: java.lang.ArithmeticException: BigInteger: modulus not positive
• KT-14547 NoSuchElementException when compiling callable reference without stdlib in the classpath
• KT-14966 Regression: VerifyError on access super implementation from delegate
• KT-15017 Throwing exception in the end of inline suspend-functions lead to internal compiler error
• KT-15439 Resolved call is not completed for generic callable reference in if-expression
• KT-15500 Exception passing freeCompilerArgs to gradle plugin
• KT-15646 InconsistentDebugInfoException when stepping over throw
• KT-15726 Kotlin compiles invalid bytecode for nested try-catch with return
• KT-15743 Overloaded Kotlin extensions annotates wrong parameters in java
• KT-15868 NPE when comparing nullable doubles for equality
• KT-15995 Can't build project with DataBinding using Kotlin 1.1: incompatible language version
• KT-16047 Internal Error: org.jetbrains.kotlin.util.KotlinFrontEndException while analyzing expression

Type inference issues

• KT-10268 Wrong type inference related to captured types
• KT-11259 Wrong type inference for Java 8 Stream.collect.
• KT-12802 Type inference failed when irrelevant method reference is used
• KT-12964 Support type inference for callable references from parameter types of an expected function type

Smart cast issues

• KT-13468 Smart cast is broken after assignment of ‘if’ expression
• KT-14350 Make smart-cast work as it does in 1.0 when -language-version 1.0 is used
• KT-14597 When over smartcast enum is broken and breaks all other “when”
• KT-15792 Wrong smart cast after y = x, x = null, y != null sequence

Various issues

• KT-15236 False positive: Null can not be a value of a non-null type
• KT-15677 Modifiers and annotations are lost on a (nullable) parenthesized type
• KT-15707 IDEA unable to parallel compile different projects
• KT-15734 Nullability is lost during expansion of a type alias
• KT-15748 Type alias constructor return type should have a corresponding abbreviation
• KT-15775 Annotations are lost on value parameter types of a function type
• KT-15780 Treat Map.getOrDefault overrides in Java the same way as in 1.0.x compiler with language version 1.0
• KT-15794 Refine backward compatibility mode for additional built-ins members from JDK
• KT-15848 Implement additional annotation processing in the KotlinScriptDefinitionFromAnnotatedTemplate for SamWithReceiver plugin
• KT-15875 Operation has lead to overflow for ‘mod’ with negative first operand
• KT-15945 Feature Request: Andrey Breslav to grow a beard.

JavaScript backend

Coroutine support

• KT-15834 JS: Local delegate in suspend function
• KT-15892 JS: safe call of suspend functions causes compiler to crash

Diagnostics

• KT-14668 Do not allow declarations in ‘kotlin’ package or subpackages in JS
• KT-15184 JS: prohibit .. operation with dynamic on left-hand side
• KT-15253 JS: no error when use class external class with JsModule in type context when compiling with plain module kind
• KT-15283 JS: additional restrictions on dynamic
• KT-15961 Could not implement external open class with function with optional parameter

Language feature support

• KT-14035 JS: support implementing CharSequence
• KT-14036 JS: use Int16 for Char when it possible and box to our Char otherwise
• KT-14097 Wrong code generated for enum entry initialization using non-primary no-argument constructor
• KT-15312 JS: map kotlin.Throwable to JS Error
• KT-15765 JS: support callable references on built-in and intrinsic functions and properties
• KT-15900 JS: Support enum entry with empty initializer with vararg constructor

Standard library support

• KT-4141 JS: wrong return type for Date::getTime
• KT-4497 JS: add String.toInt, String.toDouble etc extension functions, parseInt and parseFloat are deprecated in favor of these new ones
• KT-15940 JS: rename all js standard library artifacts (both in maven and in compiler distribution) to kotlin-stdlib-js.jar
• Add Promise<T> external declaration to the standard library
• Types like Date, Math, Console, Promise, RegExp, Json require explicit import from kotlin.js package

External declarations

• KT-15144 JS: rename noImpl to definedExternally
• KT-15306 JS: allow to use definedExternally only inside a body of external declarations
• KT-15336 JS: allow to inherit external classes from kotlin.Throwable
• KT-15905 JS: add a way to control qualifier for external declarations inside file
• Deprecate @native annotation, to be removed in 1.1 release.

Exceptions / Errors

• KT-10894 Infinite indexing at projects with JS modules
• KT-14124 AssertionError: strings file not found on K2JS serialized data

Various issues

• KT-8211 JS: generate dummy init for properties w/o initializer to avoid to have different hidden classes for different instances
• KT-12712 JS: Json should not be a class
• KT-13312 JS: can't use extension lambda where expected lambda and vice versa
• KT-13632 Add template kotlin js project under gradle in “New Project” window
• KT-15278 JS: don't treat property access through dynamic as side effect free
• KT-15285 JS: take into account as many characteristics from the signature as possible when mangling
• KT-15678 JS: Generated local variable named ‘element’ clashes with actual local variable named ‘element’
• KT-15755 JS compiler produces a lot of empty kotlin_file_table files for irrelevant packages
• KT-15770 Name clash between recursive local functions with same name
• KT-15797 JS: wrong code for accessing nested class inside js module
• KT-15863 JS: Extension function reference shifts parameters loosing the receiver
• KT-16049 JS: drop “-kjsm” command line option, merge the logic into “-meta-info”
• KT-16083 JS: rename “-library-files” argument to “-libraries” and change separator from comma to system file separator

Standard Library

• KT-13353 Add Map.minus(key) and Map.minus(keys)
• KT-13826 Add parameter names in function types used in the standard library
• KT-14279 Make String.matches(Regex) and Regex.matches(String) infix
• KT-15399 Iterable.average() now returns NaN for an empty collection
• KT-15975 Move coroutine-related runtime parts to kotlin.coroutines.experimental package
• KT-16030 Move bitwise operations on Byte and Short to kotlin.experimental package
• KT-16026 Classes compiled in 1.1 in 1.0-compatibility mode may contain references to CloseableKt class from 1.1

IDE

Configuration issues

• KT-15621 Copy compiler options values from project settings on creating a kotlin facet for Kotlin (JVM) project
• KT-15623 Copy compiler options values from project settings on creating a kotlin facet for Kotlin (JavaScript) project
• KT-15624 Set option “Use project settings” in newly created Kotlin facet
• KT-15712 Configuring a project with Maven or Gradle should automatically use stdlib-jre7 or stdlib-jre8 instead of standard stdlib
• KT-15772 Facet does not pick up api version from maven
• KT-15819 It would be nice if compileKotlin options are imported into Kotlin facet from gradle/maven
• KT-16015 Prohibit api-version > language-version in Facet and Project Settings

Coroutine support

• KT-14704 Extract Method should work in coroutines
• KT-15955 Quick-fix to enable coroutines through Gradle project configuration
• KT-16018 Hide coroutines intrinsics from import and completion
• KT-16075 Error:Kotlin: The -Xcoroutines can only have one value

Backward compatibility issues

• KT-15134 Do not suggest using destructuring lambda if this will result in “available since 1.1” error
• KT-15918 Quick fix “Set module language level to 1.1” should also set API version to 1.1
• KT-15969 Replace operator with function should use either rem or mod for % depending on language version
• KT-15978 Type alias from Kotlin 1.1 are suggested in completion even if language level is set to 1.0 in settings
• KT-15979 Usages of type aliases are not shown as errors in editor if language version is set to 1.0
• KT-16019 Do not suggest renaming to underscore in 1.0 compatibility mode
• KT-16036 “Create type alias from usage” quick-fix should not be suggested at language level 1.0

Intention actions, inspections and quick-fixes

New features

• KT-9912 Merge ifs intention
• KT-13427 “Specify type explicitly” should support type aliases
• KT-15066 “Make private/..” intention on type aliases
• KT-15709 Add inspection for private primary constructors in data classes as they are accessible via the copy method
• KT-15738 Intention to add suspend modifier to functional type
• KT-15800 Quick-fix to convert a function to suspending on error when calling suspension inside

Bug fixes

• KT-13710 Import intention action should not appear in import list
• KT-14680 import statement to type alias reported as unused when using only TA constructor
• KT-14856 TextView internationalisation intention does not report the problem
• KT-14993 Keep destructuring declaration parameter on inspection “Remove explicit lambda parameter types”
• KT-14994 PsiInvalidElementAccessException and incorrect generation on inspection “Specify type explicitly” on destructuring parameter
• KT-15162 “Remove explicit lambda parameter types” intentions fails with destructuring declaration with KNPE at KtPsiFactory.createLambdaParameterList()
• KT-15311 “Add Import” intention generates incorrect code
• KT-15406 Convert to secondary constructor for enum class should put new members after enum values
• KT-15553 Copy concatenation text to clipboard with Kotlin and string interpolation does not work
• KT-15670 ‘Convert to lambda’ quick fix in IDEA leaves single-line comment and } gets commented out
• KT-15873 Alt+Enter menu isn't shown for deprecated mod function
• KT-15874 Replace operator with function call replaces % with deprecated mod
• KT-15884 False positive “Redundant .let call”
• KT-16072 Intentions to convert suspend lambdas to callable references should not be shown

Android support

• KT-13275 Kotlin Gradle plugin for Android does not work when jackOptions enabled
• KT-15150 Android: Add quick-fix to generate View constructor convention
• KT-15282 Issues debugging crossinline Android code

KDoc

• KT-14710 Sample references are not resolved in IDE
• KT-15796 Import of class referenced only in KDoc not preserved after copy-paste

Various issues

• KT-9011 Shift+Enter should insert curly braces when invoked after class declaration
• KT-11308 Hide kotlin.jvm.internal package contents from completion and auto-import
• KT-14252 Completion could suggest constructors available via type aliases
• KT-14722 Completion list isn't filled up for type alias to object
• KT-14767 Type alias to annotation class should appear in the completion list
• KT-14859 “Parameter Info” sometimes does not work properly inside lambda
• KT-15032 Injected fragment: descriptor was not found for declaration: FUN
• KT-15153 Support typeAlias extensions in completion and add import
• KT-15786 NoSuchMethodError: com.intellij.util.containers.UtilKt.isNullOrEmpty
• KT-15883 Generating equals() and hashCode(): hashCode does not correctly honor variable names with back ticks
• KT-15911 Kotlin REPL will not launch: “Neither main class nor JAR path is specified”

J2K

• KT-15789 Kotlin plugin incorrectly converts for-loops from Java to Kotlin

Gradle support

• KT-14830 Kotlin Gradle plugin configuration should not add ‘kotlin’ source directory by default
• KT-15279 ‘Kotlin not configured message’ should not be displayed while gradle sync is in progress
• KT-15812 Create Kotlin facet on importing gradle project with unchecked option Create separate module per source set
• KT-15837 Gradle compiler attempts to connect to daemon on address derived from DNS lookup
• KT-15909 Copy Gradle compiler options to facets in Intellij/AS
• KT-15929 Gradle project imported with wrong ‘target platform’

Other issues

• KT-15450 JSR 223 - support eval with bindings

1.1.0-Beta

Reflection

• KT-15540 findAnnotation returns T?, but it throws NoSuchElementException when there is no matching annotation
• Reflection API in kotlin-reflect library is moved to kotlin.reflect.full package, declarations in the package kotlin.reflect are left deprecated. Please migrate according to the hints provided.

Compiler

Coroutine support

• KT-15379 Allow invoke on instances of suspend function type inside suspend function
• KT-15380 Support suspend function type with value parameters
• KT-15391 Prohibit suspend function type in supertype list
• KT-15392 Prohibit local suspending function
• KT-15413 Override regular functions with suspending ones and vice versa
• KT-15657 Refine dispatchResume convention
• KT-15662 Prohibit callable references to suspend functions

Diagnostics

• KT-9630 Cannot create extension function on intersection of types
• KT-11398 Possible false positive for INACCESSIBLE_TYPE
• KT-13593 Do not report USELESS_ELVIS_RIGHT_IS_NULL for left argument with platform type
• KT-13859 Wrong error about using unrepeatable annotation when mix implicit and explicit targets
• KT-14179 Prohibit to use enum entry as type parameter
• KT-15097 Inherited platform declarations clash: regression under 1.1 when indirectly inheriting from java.util.Map
• KT-15287 Kotlin runtime 1.1 and runtime 1.0.x: Overload resolution ambiguity
• KT-15334 Incorrect “val cannot be reassigned” inside do-while
• KT-15410 “Protected function call from public-API inline function” for protected constructor call

Kapt3

• KT-15145 Kapt3: Doesn't compile with multiple errors
• KT-15232 Kapt3 crash due to java codepage
• KT-15359 Kapt3 exception while annotation processing (DataBindings AS2.3-beta1)
• KT-15375 Kapt3 can't find ${env.JDK_18}/lib/tools.jar
• KT-15381 Unresolved references: R with Kapt3
• KT-15397 Kapt3 doesn't work with databinding
• KT-15409 Kapt3 Cannot find the getter for attribute ‘android:text’ with value type java.lang.String on android.widget.EditText.
• KT-15421 Kapt3: Substitute types from Psi instead of writing NonExistentClass for generated type names
• KT-15459 Kapt3 doesn't generate code in test module
• KT-15524 Kapt3 - Error messages should display associated element information (if available)
• KT-15713 Kapt3: circular dependencies between Gradke tasks

Exceptions / Errors

• KT-11401 Error type encountered for implicit invoke with function literal argument
• KT-12044 Assertion “Rewrite at slice LEXICAL_SCOPE” for ‘if’ with property references
• KT-14011 Compiler crash when inlining: lateinit property allRecapturedParameters has not been initialized
• KT-14868 CCE in runtime while converting Number to Char
• KT-15364 VerifyError: Bad type on operand stack on ObserverIterator.hasNext
• KT-15373 Internal error when running TestNG test
• KT-15437 VerifyError: Bad local variable type on simplest provideDelegate
• KT-15446 Property reference on an instance of subclass causes java.lang.VerifyError
• KT-15447 Compiler backend error: “Don't know how to generate outer expression for class”
• KT-15449 Back-end (JVM) Internal error: Couldn't inline method call
• KT-15464 Regression: “Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:”
• KT-15575 VerifyError: Bad type on operand stack

Various issues

• KT-11962 Super call with default parameters check is generated for top-level function
• KT-11969 ProGuard issue with private interface methods
• KT-12795 Write information about sealed class inheritors to metadata
• KT-13718 ClassFormatError on aspectj instrumentation
• KT-14162 Support @InlineOnly on inline properties
• KT-14705 Inconsistent smart casts on when enum subject
• KT-14917 No way to pass additional java command line options to kontlinc on Windows
• KT-15112 Compiler hangs on nested lock compilation
• KT-15225 Scripts: generate classes with names that are valid Java identifiers
• KT-15411 Unnecessary CHECKCAST bytecode when dealing with null
• KT-15473 Invalid KFunction byte code signature for callable references
• KT-15582 Generated bytecode is sometimes incompatible with Java 9
• KT-15584 Do not mark class files compiled with a release language version as pre-release
• KT-15589 Upper bound for T in KClass can be implicitly violated using generic function
• KT-15631 Compiler hang in MethodAnalyzer.analyze() fixed

JavaScript backend

Coroutine support

• KT-15362 JS: Regex doesn't work (properly) in coroutine
• KT-15366 JS: error when calling inline function with optional parameters from another module inside coroutine lambda
• KT-15367 JS: for against iterator with suspend next and hasNext functions does not work
• KT-15400 suspendCoroutine is missing in JS BE
• KT-15597 Support non-tail suspend calls inside named suspend functions
• KT-15625 JS: return statement without value surrounded by try..finally in suspend lambda causes compiler error
• KT-15698 Move coroutine intrinsics to kotlin.coroutine.intrinsics package

Diagnostics

• KT-14577 JS: do not report declaration clash when common redeclaration diagnostic applies
• KT-15136 JS: prohibit inheritance from kotlin Function{N} interfaces

Language features support

• KT-12194 Exhaustiveness check isn't generated for when expressions in JS at all
• KT-15590 Support increment on inlined properties

Native / external

• KT-8081 JS: native inherited class shouldn't require super or primary constructor call
• KT-13892 JS: restrictions for native (external) functions and properties
• KT-15307 JS: prohibit inline members inside external declarations
• KT-15308 JS: prohibit non-abstract members inside external interfaces except nullable properties (with accessors)

Exceptions / Errors

• KT-7302 KotlinJS - Trait with optional parameter causes compilation error
• KT-15325 JS: ReferenceError: $receiver is not defined
• KT-15357 JS: when expression in primary-from-secondary constructor call
• KT-15435 Call to ‘synchronize’ crashes JS backend
• KT-15513 JS: empty do..while loop crashes compiler

Various issues

• KT-4160 JS: compiler produces wrong code for escaped variable names with characters which Illegal in JS (e.g. spaces)
• KT-7004 JS: functions named call not inlined
• KT-7588 JS: operators are not inlined
• KT-7733 JS: Provide overflow behavior for integer arithmetic operations
• KT-8413 JS: generated wrong code for some float constants
• KT-12598 JS: comparisons for Enums always translates using strong operator
• KT-13523 Augmented assignment with array access in LHS is translated incorrectly
• KT-13888 JS: change how functions optional parameters get translated
• KT-15260 JS: don't import module more than once
• KT-15475 JS compiler deletes internal function name in js("") text block
• KT-15506 JS: invalid evaluation order when passing arguments to function by name
• KT-15512 JS: wrong result when use break/throw/return in || and && operators
• KT-15569 js: Wrong code generated when calling an overloaded operator function on an inherited property

Standard Library

• KEEP-23 Operation to group by key and fold each group simultaneously
• KT-15774 buildSequence and buildIterator functions with yield and yieldAll based on coroutines
• KT-6903 Add also extension, which is like apply, but with it instead of this inside lambda.
• KT-7858 Add extension function takeIf to match a value against predicate and return null when it does not match
• KT-11851 Provide extension Map.getValue(key: K): V which throws or returns default when key is not found
• KT-7417 Add min, max on two numbers to standard library
• KT-13898 Allow to implement toArray in collections as protected and provide protected toArray in AbstractCollection.
• KT-14935 Array-like list instantiation functions: List(count) { init } and MutableList(count) { init }
• KT-15630 Overloads of mutableListOf, mutableSetOf, mutableMapOf without parameters
• KT-15557 Iterable.joinTo loses information about each element by calling toString on them by default
• KT-15477 Introduce Throwable.addSuppressed extension
• KT-15310 Add dynamic.unsafeCast
• KT-15436 JS stdlib: org.w3c.fetch.RequestInit has 12 parameters, all required
• KT-15458 Add print and println to common stdlib

IDE

• Project View: Fix presentation of Kotlin files and their members when @JvmName having the same name as the file itself

no-arg / all-open

• KT-15419 IDE build doesn't pick settings of all-open plugin
• KT-15686 IDE build doesn't pick settings of no-arg plugin
• KT-15735 Facet loses compiler plugin settings on reopening project, when “Use project settings” = Yes

Formatter

• KT-15542 Formatter doesn't handle spaces around ‘by’ keyword
• KT-15544 Formatter doesn't remove spaces around function reference operator

Intention actions, inspections and quick-fixes

New features

• Implement quickfix which enables/disables coroutine support in module or project
• KT-5045 Intention to convert between two comparisons and range check and vice versa
• KT-5629 Quick-fix to import extension method when arguments of non-extension method do not match
• KT-6217 Add warning for unused equals expression
• KT-6824 Quick-fix for applying spread operator where vararg is expected
• KT-8855 Implement “Create label” quick-fix
• KT-15056 Implement intention which converts object literal to class
• KT-15068 Implement intention which rename file according to the top-level class name
• KT-15564 Add quick-fix for changing primitive cast to primitive conversion method

Bug fixes

• KT-14630 Clearer diagnostic message for platform type inspection
• KT-14745 KNPE in convert primary constructor to secondary
• KT-14889 Replace ‘if’ with elvis operator produces red code if result is referenced in ‘if’
• KT-14907 Quick-fix for missing operator adds infix modifier to created function
• KT-15092 Suppress inspection “use property access syntax” for some getters and fix completion for them
• KT-15227 “Replace if with elvis” silently changes semantics
• KT-15412 “Join declaration and assignment” can break code with smart casts
• KT-15501 Intention “Add names to call arguments” shouldn't appear when the only argument is a trailing lambda

Refactorings (Extract / Pull)

• KT-15611 Extract Interface/Superclass: Disable const-properties
• Pull Up: Fix pull-up from object to superclass
• KT-15602 Extract Interface/Superclass: Disable “Make abstract” for inline/external/lateinit members
• Extract Interface: Disable inline/external/lateinit members
• KT-12704, KT-15583 Override/Implement Members: Support all nullability annotations respected by the Kotlin compiler
• KT-15563 Override Members: Allow overriding virtual synthetic members (e.g. equals(), hashCode(), toString(), etc.) in data classes
• KT-15355 Extract Interface: Disable “Make abstract” and assume it to be true for abstract members of an interface
• KT-15353 Extract Superclass/Interface: Allow extracting class with special name (and quotes)
• KT-15643 Extract Interface/Pull Up: Disable “Make abstract” and assume it to be true for primary constructor parameter when moving to an interface
• KT-15607 Extract Interface/Pull Up: Disable internal/protected members when moving to an interface
• KT-15640 Extract Interface/Pull Up: Drop ‘final’ modifier when moving to an interface
• KT-15639 Extract Superclass/Interface/Pull Up: Add spaces between ‘abstract’ modifier and annotations
• KT-15606 Extract Interface/Pull Up: Warn about private members with usages in the original class
• KT-15635 Extract Superclass/Interface: Fix bogus visibility warning inside a member when it's being moved as abstract
• KT-15598 Extract Interface: Red-highlight members inherited from a super-interface when that interface reference itself is not extracted
• KT-15674 Extract Superclass: Drop inapplicable modifiers when converting property-parameter to ordinary parameter

Multi-platform project support

• KT-14908 Actions (quick-fixes) to create implementations of header elements
• KT-15305 Do not report UNUSED for header declarations with implementations and vice versa
• KT-15601 Cannot suppress HEADER_WITHOUT_IMPLEMENTATION
• KT-15641 Quick-fix “Create header interface implementation” does nothing

Android support

• KT-12884 Android Extensions: Refactor / Rename of activity name does not change import extension statement
• KT-14308 Android Studio randomly hangs due to Java static member import quick-fix lags
• KT-14358 Kotlin extensions: rename layout file: Throwable: “PSI and index do not match” through KotlinFullClassNameIndex.get()
• KT-15483 Kotlin lint throws unexpected exceptions in IDE

Various issues

• KT-12872 Don't show “defined in ” in quick doc for local variables
• KT-13001 “Go to Type Declaration” is broken for stdlib types
• KT-13067 Syntax colouring doesn't work for KDoc tags
• KT-14815 alt + enter -> “import” over a constructor reference is not working
• KT-14819 Quick documentation for special Enum functions doesn't work
• KT-15141 Bogus import popup for when function call cannot be resolved fully
• KT-15154 IllegalStateException on attempt to convert import statement to * if last added import is to typealias
• KT-15329 Regex not inspected properly for javaJavaIdentifierStart and javaJavaIdentifierPart
• KT-15383 Kotlin Scripts can only resolve stdlib functions/classes if they are in a source directory
• KT-15440 Improve extensions detection in IDEA
• KT-15548 Kotlin plugin: @Language injections specified in another module are ignored
• Invoke StorageComponentContainerContributor extension for module dependencies container as well (needed for “sam-with-receiver” plugin to work with scripts)

J2K

• KT-6790 J2K: Static import of Map.Entry is lost during conversion
• KT-14736 J2K: Incorrect conversion of back ticks in javadoc {@code} tag
• KT-15027 J2K: Annotations are set on functions, but not on property accessors

Gradle support

• KT-15376 Kotlin incremental=true: fixed compatibility with AS 2.3
• KT-15433 Kotlin daemon swallows exceptions: fixed stack trace reporting
• KT-15682 Uncheck “Use project settings” option on import Kotlin project from gradle

1.1-M04 (EAP-4)

Language related changes

• KT-4481 compareTo on primitive floats/doubles should behave naturally
• KT-11016 Allow to annotate internal API to be used inside public inline functions
• KT-11128 Member vs SAM conversion with more specific signature
• KT-12215 Allowing to access protected members in public inline members creates potential binary compatibility problem
• KT-12531 Report error when delegated member hides a supertype member
• KT-14650 mod function on integral types is inconsistent with BigInteger.mod
• KT-14651 Floating point comparisons shall operate according to IEEE754
• KT-14852 It should not be possible to use typealias that abbreviates a generic projection as a constructor
• KT-15226 Restrict delegation to java 8 default methods

Reflection

• KT-12250 Provide API for getting a single annotation by its class
• KT-14939 VerifyError in accessors for bound property reference with receiver ‘null’

Compiler

Coroutines

• Major coroutines redesign - see KEEP for details

Optimizations

• KT-11734 Optimize const vals by inlining them at call site
• KT-13570 Generate TABLE/LOOKUPSWITCH if all when branches are const integer values
• KT-14746 Captured Refs should not be volatile

Various issues

• KT-10982 java.util.Map::compute* poor usability
• KT-12144 Type inference incorporation error on SAM adapter call
• KT-14196 Do not allow class literal with expression in annotation arguments
• KT-14453 Regression: Type inference failed: inferred type is T but T was expected
• KT-14774 Incorrect inner class modifier generated for sealed inner classes
• KT-14839 CompilationException when calling inline fun with first arg of 2 (w/defaults) within catch block of Java exception type
• KT-14855 Projection in type aliases should be allowed in supertypes and constructor invocations if they expand to non-toplevel projections
• KT-14887 Unhelpful error “public-API inline function cannot access non-public-API” for unresolved call inside inline function
• KT-14930 Android: creating Kotlin activity: UOE at EmptyList.removeAll()
• KT-15146 Kapt3 no source files on unittest
• KT-15272 Exception when building 2 projects at the same time

JavaScript backend

dynamic type

• KT-8207 Extension function on dynamic resolves on any type
• KT-6579 JS: prohibit to use in and !in on dynamic
• KT-6580 JS: prohibit to use more than one argument in indexed access on dynamic
• KT-13615 JS: don't generate guard for catch with dynamic type

@native/external

• KT-13893 JS: Replace @native annotation with external modifier
• KT-12877 Allow to specify module for native JS declarations
• KT-14806 JS: name of a local variable clashes with native declaration from global scope

Diagnostics

• KT-13889 JS: prohibit overriding native functions with default values assigned to parameters
• KT-13894 JS: prohibit native declaration inside non-native
• KT-13895 JS: RUNTIME annotations
• KT-13896 JS: prohibit external(native) extension functions and properties
• KT-13897 JS: prohibit native(external) files and typealiases
• KT-13910 JS: prohibit override members of native declaration with overloads
• KT-14027 JS: prohibit native inner classes
• KT-14029 JS: prohibit private members inside native declarations
• KT-14037 JS: prohibit using native interfaces in RHS of IS
• KT-14038 JS: warn when using native interface in RHS of AS
• KT-15130 JS: prohibit inheritance native from non-native
• KT-12600 JS: type check with a native interface compiles but crash at runtime
• KT-13307 KotlinJS cannot cast to a marker interface.

Language features support

• KT-13573 JS: support bound callable reference
• KT-14634 JS: support enumValues / enumValueOf
• KT-15058 JS: replace suspend function convention

Issues related to kotlin.Any

• KT-7664 JS: “x is Any” is always false
• KT-7665 JS: creating Any instance crashes on runtime
• KT-15131 JS: don't mangle Any.equals

Various issues

• KT-14033 JS: don't optimize (based on type information) by default expressions with any of “as, is, !is, as?, ?., !!”
• KT-13616 JS: don't omit guard for catch with Throwable type
• KT-12976 JS: human-friendly error message on wrong modules order
• KT-15212 JS: link unqualified names in js(...) function to local functions in outer Kotlin function by name
• KT-14750 JS: remove unnecessary functions from kotlin.js

Bugfixes

• KT-12566 JS: inner local class should refer to captured variables via its outer class
• KT-12527 Reified is-check works wrongly for chained calls
• KT-12586 JS: compiler crashes when call inline function inside string templeate
• KT-13164 Ecma TypeError on extending local class from inner one
• KT-14888 JS: Compiler error: Cannot get FQ name of local class: lazy class
• KT-14748 JS: eliminate unused functions
• KT-14999 JS: Operator set + labeled lambdas
• KT-15007 JS: Dies when checking if exception implements interface. TypeError: Cannot read property ‘baseClasses’ of undefined
• KT-15073 KT to JS losing extension function's receiver
• KT-15169 JS: compiler fails on annotated expression with TRE at Translation.doTranslateExpression()
• KT-13522 JS: can't use captured reified type paramter in jsClass
• KT-13784 JS: lambda was not inlined for function with reified parameter declared in another module
• KT-13792 JS: inner class of local class does not capture enclosing class properly
• KT-15327 JS: Enum valueOf should throw IllegalArgumentException

Standard library

• KT-7930 Make String.toInt(), toLong(), etc. nullable instead of throwing exception
• KT-8220 Add #peek method to Sequence similar to Stream.peek
• KT-8286 Int.toString and String.toInt with base as parameter
• KT-14034 JS: unsafeCast function
• KT-15181 Some source files are missing from published sources on Bintray

IDE

• KT-15205 Implement quick-fix for increasing module language level to enable unsupported language features

Issues fixed

• KT-14693 Introduce Type Alias: Do not suggest type qualifiers
• KT-14696 Introduce Type Alias: Fix NPE during dialog repaint
• KT-14685 Introduce Type Alias: Replace type usages in constructor calls
• KT-14861 Introduce Type Alias: Support callable references/class literals
• KT-15204 Implement navigation from header to its implementation and vice versa
• KT-15269 Quickfix for external (native) extension declarations
• KT-15293 Add 1.1 EAP repository when creating a new Gradle project with 1.1 EAP

Scripting

• KT-14538 Kotlin gradle script files appear totally unresolved
• KT-14706 Support package declaration in scripting
• KT-14707 Support javax.script.Invocable on the JSR 223 ScriptEngine
• KT-14708 kotlin-script-runtime is not published
• KT-14713 Make it possible to use JSR 223 support without specifying compiler JAR absolute path
• KT-15064 Gradle build with script .kts file: NPE at ScriptCodegen.genConstructor()

Gradle support

• KT-15080 Gradle build fails with Gradle 3.2 (master)
• KT-15120 Gradle JS test compile task doesn't pick up production code
• KT-15127 JS “compiler jar not found” with Gradle 3.2
• KT-15133 Recent gradle-script-kotlin 3.3 distributions are unusable
• KT-15218 Isolate Gradle Kotlin compiler process

1.1-M03 (EAP-3)

New language features

• KT-2964 Underscores in integer literals (see KEEP)
• KT-3824 Underscore in lambda for unused parameters (see KEEP)
• KT-2783 Allow to skip some components in a multi-declaration (see the same KEEP)
• KT-11551 limited scope for dsl writers (see KEEP)

Compiler

Coroutines related issues

• Make fields for storing lambda parameters non-final (as they get assigned within invoke call)
• KT-14719 Make initial continuation able to be resumed with exception
• KT-14636 Coroutine fields should not be volatile
• KT-14718 Validate label value of coroutine in case of no suspension points

Typealises related issues

• KT-13514 Type inference doesn't work with generic typealiases
• KT-13837 Error “Type alias expands to T, which is not a class, an interface, or an object” should also appear for local type aliases
• KT-14307 Local recursive type alias should be an error
• KT-14400 Compiler Error IllegalStateException: kotlin.NotImplementedError when anonymous object inherits from typealias
• KT-14377 Expected error: Modifier ‘companion’ is not applicable to ‘typealias’
• KT-14498 typealias allows to circumvent variance annotations
• KT-14641 An exception while processing a nested type alias access after a dot

Various issues

• KT-550 Properties without initializer but with get must infer type from getter
• KT-8816 Generate Kotlin parameter names in the same form as expected for Java 8 reflection
• KT-10569 Cannot iterate over values of an enum class when it is used as a generic parameter (see KEEP)
• KT-13557 VerifyError with delegated local variable used in object expression
• KT-13890 IllegalAccessError when invoking protected method with default arguments
• KT-14012 Back-end (JVM) Internal error every first compilation after the source code change
• KT-14201 UnsupportedOperationException: Don't know how to generate outer expression for anonymous object with invoke and non-trivial closure
• KT-14318 Repeated annotations resulting from type alias expansion should be reported
• KT-14347 Report UNUSED_PARAMETER/VARIABLE on named unused lambda parameters/destructuring entries
• KT-14352 @SinceKotlin is not taken into account for companion object member referenced via type alias
• KT-14357 Try-catch used in false condition generates CompilationException
• KT-14502 Prohibit irrelevant modifiers and annotations on destructured parameters in lambda
• KT-14692 Change resolution scope for componentX in lambda parameters
• KT-14824 Back-end (JVM) Internal error: Couldn't inline method call ‘get’ into local final fun StorageComponentContainer.(): kotlin.Unit
• KT-14798 Gradle 3.2 AssertionError: Built-in class kotlin.ParameterName is not found

JS

Feature support

• KT-6985 Support Exceptions in JS
• KT-13574 JS: support coroutines
• KT-14422 JS: Support destructuring in lambda parameters
• KT-14507 JS: allow to skip some components in a multi-declaration

Library updates

• KT-14637 JS: Missing ArrayList.ensureCapacity

Other issues

• KT-2328 js: kotlin exceptions must inherit Error
• KT-5537 Drop Cloneable in JS
• KT-7014 JS: generate code which more friendly to js tools (minifier, optimizer, linter etc)
• KT-8019 JS: no stackTrace in exception subclasses
• KT-10911 JS: Throwable properties aren't supported well
• KT-13912 JS: Compiler NPE at JsSourceGenerationVisitor. Lambda with empty [if] block passed to inline function
• KT-14535 JS: Broken modification of captured variables defined by a destructuring declaration

Standard Library

• KT-2084 Common API should be available without referring to java.* packages

  Now those common types, which are supported on all platforms, are available in kotlin.* packages, and are imported by default. These include:

  • ArrayList, HashSet, LinkedHashSet, HashMap, LinkedHashMap in kotlin.collections
  • Appendable and StringBuilder in kotlin.text
  • Comparator in kotlin.comparisons On JVM these are just typealiases of the good old types from java.util and java.lang

• KT-13554 Introduce bitwise operations and/or/xor/inv for Byte and Short

• KT-13582 New platform-agnostic extensions for arrays: contentEquals to compare arrays' content for equality, contentHashCode to get hashcode of array's content, and contentToString to get the string representation of array elements.

• KT-14510 Generic constraints of Array.flatten signature were relaxed a bit to make it just usable.

• KT-14789 Provide KotlinVersion class, which allows to get the current version of the standard library and compare it with some other KotlinVersion value.

IDE

• KT-14409 Incorrect “Variable can be declared immutable” inspection for local delegated variable
• KT-14431 Create quick-fix on UNUSED_PARAMETER/VARIABLE when it can be replaced with one underscore
• KT-14794 Add /Specify type/Remove explicit type intentions for property with getters if type can be inferred
• KT-14752 Exception while typing @JsName annotation in editor

1.1-M02 (EAP-2)

Language features

• Destructuring for lambdas (proposal)

  Current limitations:

  • Nested destructuring is not supported
  • Destructuring in named functions/constructors is not supported
  • Is not supported for JS target

Compiler

Smart cast enhancements

• KT-2127 Smart cast receiver to not null after a not null safe call
• KT-6840 Make data flow information the same for assigned and assignee
• KT-13426 Fix exception when smartcast on both dispatch & extension receiver

Bound references related issues

• KT-12995 Do not skip generation of the left-hand side for intrinsic bound references and class literals
• KT-13075 Fix codegen for bound class reference
• KT-13110 Fix type mismatch error on class literal with integer receiver expression
• KT-13172 Report error on “this::class” in super constructor call
• KT-13271 Fix incorrect unsupported error on synthetic extension call on LHS of ::
• KT-13367 Inline bound callable reference if it's used only as a lambda

Coroutines related issues

• KT-13156 Do not execute last Unit-typed coroutine statement twice
• KT-13246 Fix VerifyError with coroutines on Dalvik
• KT-13289 Fix VerifyError with coroutines: Bad type on operand stack
• KT-13409 Fix generic variable spilling with coroutines
• KT-13531 Fix ClassCastException when coercion to Unit interacts with generic await() and coroutines
• Prohibit Continuation<*> as a last parameter of suspend functions
• KT-13560 Prohibit non-Unit suspend functions

Typealises related issues

• KT-13200 Fix incorrect number of required type arguments reported on typealias
• KT-13181 Fix unresolved reference for a type alias from a different module
• KT-13161 Support java static methods calls with typealiases
• KT-13835 Do not lose nullability information while expanding type alias in projection position
• KT-13422 Prohibit usage of type alias to exception class as an object in ‘throw’ expression
• KT-13735 Fix NoSuchMethodError for generic typealias access
• KT-13513 Support SAM constructors for aliased java functional types
• KT-13822 Fix exception for start-projection of a type alias
• KT-14071 Prohibit using type alias as a qualifier for super
• KT-14282 Report error on unused type alias with -language-version 1.0
• KT-14274 Fix type alias resolution when it's used for supertype constructor call

JDK dependent built-in classes related issues

• KT-13209 Change first parameter's type of Map.getOrDefault to K instead of Any
• KT-13069 Do not emit invalid DefaultImpls delegation when interface extends MutableMap with JDK8

data classes and inheritance

• KT-11306 Allow data classes to implement equals/hashCode/toString from base classes

Various JVM code generation issues

• KT-13182 Fix compiler internal error at inline
• KT-13757 Prohibit referencing nested classes by name with $
• KT-12985 Do not create range instances for ‘for’ loop in CharSequence.indices
• KT-13931 Optimize generated code for IntRange#contains

Various analysis & diagnostic issues

• KT-435 Use parameter names in error messages when calling a function-valued expression
• KT-10001 Fix false unnecessary non-null assertion on a pair element
• KT-12811 Treat function declaration as final if it is a member of a final class
• KT-13961 Report REDECLARATION on private-in-file ‘foo’ vs public ‘foo’ in different file

JS

Feature support

• KT-13544 Support type aliases in JS
• KT-13345 Support class literals in JS

Library updates

• KT-18 Move exceptions from java.lang to kotlin package
• KT-12386 Rewrite JS collections in Kotlin, move them to kotlin.collections package
• KT-7809 Make Collection implementations conform to their declared interfaces
• KT-7473 Make AbstractCollection.equals check object type
• KT-13429 Make ‘remove’ on fresh iterator throw exception instead of removing last element
• KT-13459 Make JS implementation of ArrayList::add(index, element) check the index is in valid range
• KT-8724 Fix MutableIterator.remove() for HashMap
• KT-10786 Make Map.keys return view of map keys instead of snapshot
• KT-14194 Make HashMap.putAll implementation not to call getKey/getValue

Standard Library

Backward compatibility

• KT-14297 Add @SinceKotlin annotation to support compatibility with compilation against older standard library
• KT-14213 Ensure printStackTrace can be called with -language-version 1.0

Enhancements

• KEEP-53 Provide two distinct hierarchies of abstract collections: one for implementing read-only/immutable collections, and other for implementing mutable collections
• KEEP-13 Provide extension functions to copy maps
• KT-18 Introduce type aliases for common exceptions from java.lang in kotlin package
• KT-12762 Make kotlin.ranges.until return an empty range for “illegal” ‘to’ parameter
• KT-12894 Allow nullable receiver for use extension

Reflection

New features

• KT-8998 Introduce comprehensive API to work with KType instances
• KT-10447 Provide a way to check if a KClass is a data class
• KT-11284 Add KClass.cast extension
• KT-13106 Support annotation constructors in reflection

Optimizations

• KT-10651 Optimize KClass.simpleName

IDE

New features

• KT-12903 Implement “Inline type alias” refactoring
• KT-12902 Implement “Introduce type alias” refactoring
• KT-12904 Implement “Create type alias from usage” quick fix
• KT-9016 Make use of named higher order function parameters
• KT-12205 Suggest import of Kotlin static members in editor with Java source
• KT-13941 Implement intention for introducing destructured lambda parameters when it's possible
• KT-13943 Implement inspection and quickfix for to detect a manual destructuring of for / lambda parameter

Issues fixed

• KT-13004 Support bound method references in completion
• KT-13242 Suggest ‘typealias’ keyword in completion
• KT-13244 Override/Implement Members: Do not expand type aliases in the generated members
• KT-13611 Go to Class: Fix presentation of type aliases
• KT-13759 Rename: Process object-wrapping alias references
• KT-13955 Find Usages: Add special type for usages inside of type aliases
• KT-13479 Support navigation to type aliases from binaries
• KT-13766 Fix optimize imports not to add wrong and unnecessary import because of type alias
• KT-12949 Consider type aliases as candidates for import
• KT-13266 Suggest non-imported type aliases in completion
• KT-13689 Do not treat type alias constructor usage as original type usage for optimize imports

Scripting

• A new library kotlin-script-util containing utilities for implementing kotlin script support
• KT-7880 Experimental support for JSR 223 Scripting API
• KT-13975, KT-14264 Convert error on retrieving gradle plugin settings to warning
• Implement support for custom template-based scripts in command-line compiler, maven and gradle plugins

1.1-M01 (EAP-1)

Language features

• Coroutines (async/await, generators) (proposal)

  Current limitations:

  • for some cases type inference is not supported yet
  • limited IDE support
  • allowed only one handleResult function: design
  • handling finally blocks is not supported: issue

• Bound callable references (proposal)

• Type aliases (proposal)

  Current limitations:

  • type alias constructors for inner classes are not supported yet
  • annotations on type alias are not supported yet
  • limited IDE support

• Local delegated properties (proposal)

• JDK dependent built-in classes (proposal)

• Sealed class inheritors in the same file (proposal)

• Allow base classes for data classes (proposal)

Scripting

• Implement support for Script Definition Template and related functionality, except the following parts:
  • automatic script templates discovery is not implemented
  • @file:ScriptTemplate annotation is not supported
  • the parameters javaHome and scripts from KotlinScriptExternalDependencies are not used yet
• Implement support for custom template-based scripts in IDEA: resolving, completion and navigation to symbols from script classpath and sources
• Implement GradleScriptTemplatesProvider extension that supplies a script template if gradle with kotlin script support is used in the project

Compiler

Issues fixed

• KT-4779 Generate default methods for implementations in interfaces
• KT-11780 Fixed incorrect “No cast needed” warning
• KT-12156 Fixed incorrect error on inline modifier inside final class
• KT-12358 Report missing error “Abstract member not implemented” when a fake method of ‘Any’ is inherited from an interface
• KT-6206 Generate equals/hashCode/toString in data class always unless it'll cause a JVM signature clash error
• KT-8990 Fixed incorrect error “virtual member hidden” for a private method of an inner class
• KT-12429 Fixed visibility checks for annotation usage on top-level declarations
• KT-5068 Introduced a special diagnostic message for “type mismatch” errors such as fun f(): Int = { 1 }.

Standard Library

• KT-8254 Provide standard library supplement artifacts for using with JDK 7 and 8. These artifacts include extensions for the types available in the latter JDKs, such as AutoCloseable.use (KT-5899) or Stream.toList.
• KT-12753 Provide an access to named group matches of Regex match result (for JDK 8 only).
• Add assertFails overload with message to kotlin-test.

IDE

New features

• KT-12019 Introduce “redundant if” inspection

Issues fixed

• KT-12389 Do not exit from REPL when toString() of user class throws an exception
• KT-12129 Fixed link on api reference page in KDoc

1.0.7

IDE

• Project View: Fix presentation of Kotlin files and their members when @JvmName having the same name as the file itself
• KT-15611 Extract Interface/Superclass: Disable const-properties
• Pull Up: Fix pull-up from object to superclass
• KT-15602 Extract Interface/Superclass: Disable “Make abstract” for inline/external/lateinit members
• Extract Interface: Disable inline/external/lateinit members
• KT-12704, KT-15583 Override/Implement Members: Support all nullability annotations respected by the Kotlin compiler
• KT-15563 Override Members: Allow overriding virtual synthetic members (e.g. equals(), hashCode(), toString(), etc.) in data classes
• KT-15355 Extract Interface: Disable “Make abstract” and assume it to be true for abstract members of an interface
• KT-15353 Extract Superclass/Interface: Allow extracting class with special name (and quotes)
• KT-15643 Extract Interface/Pull Up: Disable “Make abstract” and assume it to be true for primary constructor parameter when moving to an interface
• KT-15607 Extract Interface/Pull Up: Disable internal/protected members when moving to an interface
• KT-15640 Extract Interface/Pull Up: Drop ‘final’ modifier when moving to an interface
• KT-15639 Extract Superclass/Interface/Pull Up: Add spaces between ‘abstract’ modifier and annotations
• KT-15606 Extract Interface/Pull Up: Warn about private members with usages in the original class
• KT-15635 Extract Superclass/Interface: Fix bogus visibility warning inside a member when it's being moved as abstract
• KT-15598 Extract Interface: Red-highlight members inherited from a super-interface when that interface reference itself is not extracted
• KT-15674 Extract Superclass: Drop inapplicable modifiers when converting property-parameter to ordinary parameter
• KT-15444 Spring Support: Consider declaration open if it's supplemented with a preconfigured annotation in corresponding compiler plugin

Intention actions, inspections and quickfixes

New features

• KT-15068 Implement intention which rename file according to the top-level class name
• Implement quickfix which enables/disables coroutine support in module or project
• KT-15056 Implement intention which converts object literal to class
• KT-8855 Implement “Create label” quick fix
• KT-15627 Support “Change parameter type” for parameters with type-mismatched default value

1.0.6

IDE

• KT-13811 Expose JVM target setting in IntelliJ IDEA plugin compiler configuration UI
• KT-12410 Expose language version setting in IntelliJ IDEA plugin compiler configuration UI

Intention actions, inspections and quickfixes

• KT-14569 Convert Property to Function Intention: Search occurrences using progress dialog
• KT-14501 Create from Usage: Support array access expressions/binary expressions with type mismatch errors
• KT-14500 Create from Usage: Suggest functional type based on the call with lambda argument and unresolved invoke()
• KT-14459 Initialize with Constructor Parameter: Fix IDE freeze on properties in generic class
• KT-14044 Fix exception on deleting unused declaration in IDEA 2016.3
• KT-14019 Create from Usage: Support generation of abstract members for superclasses
• KT-14246 Intentions: Convert function type parameter to receiver
• KT-14246 Intentions: Convert function type receiver to parameter

New features

• KT-14729 Implement “Add names to call arguments” intention
• KT-11760 Create from Usage: Support adding type parameters to the referenced type

Refactorings

• KT-14583 Change Signature: Use new signature when looking for redeclaration conflicts
• KT-14854 Extract Interface: Fix NPE on dialog opening
• KT-14814 Rename: Fix renaming of .kts file to .kt and vice versa
• KT-14361 Rename: Do not report redeclaration conflict for private top-level declarations located in different files
• KT-14596 Safe Delete: Fix exception on deleting Java class used in Kotlin import directive(s)
• KT-14325 Rename: Fix exceptions on moving file with facade class to another package
• KT-14197 Move: Fix callable reference processing when moving to another package
• KT-13781 Extract Function: Do not wrap companion member references inside of the with call

New features

• KT-14792 Rename: Suggest respective parameter name for the local variable passed to function

1.0.5

IDE

• KT-9125 Support Type Hierarchy on references inside of super type call entries
• KT-13542 Rename: Do not search parameter text occurrences outside of its containing declaration
• KT-8672 Rename: Optimize search of parameter references in calls with named arguments
• KT-9285 Rename: Optimize search of private class members
• KT-13589 Use TODO() consistently in implementation stubs
• KT-13630 Do not show Change Signature dialog when applying “Remove parameter” quick-fix
• Re-highlight only single function after local modifications
• KT-13474 Fix performance of typing super call lambda
• Show “Variables and values captured in a closure” highlighting only for usages
• KT-13838 Add file name to the presentation of private top-level declaration (Go to symbol, etc.)
• KT-14096 Rename: When renaming Kotlin file outside of source root do not rename its namesake in a source root
• KT-13928 Move Inner Class to Upper Level: Fix replacement of outer class instances used in inner class constructor calls
• KT-12556 Allow using whitespaces and other symbols in “Generate -> Test Function” dialog
• KT-14122 Generate ‘toString()’: Permit for data classes
• KT-12398 Call Hierarchy: Show Kotlin usages of Java methods
• KT-13976 Search Everywhere: Render function parameter types
• KT-13977 Search Everywhere: Render extension type in prefix position
• Implement Kotlin facet

Intention actions, inspections and quickfixes

• KT-9490 Convert receiver to parameter: use template instead of the dialog
• KT-11483 Move to Companion: Do not use qualified names as labels
• KT-13874 Move to Companion: Fix AssertionError on running refactoring from Conflicts View
• KT-13883 Move to Companion Object: Fix exception when applied to class
• KT-13876 Move to Companion Object: Forbid for functions/properties referencing type parameters of the containing class
• KT-13877 Move to Companion Object: Warn if companion object already contains function with the same signature
• KT-13933 Convert Parameter to Receiver: Do not qualify companion members with labeled ‘this’
• KT-13942 Redundant ‘toString()’ in String Template: Disable for qualified expressions with ‘super’ receiver
• KT-13878 Remove Redundant Receiver Parameter: Fix exception receiver removal
• KT-14143 Create from Usages: Do not suggest on type-mismatched expressions which are not call arguments
• KT-13882 Convert Receiver to Parameter: Fix AssertionError
• KT-14199 Add Library: Fix exception due to resolution being run in the “dumb mode”
• Convert Receiver to Parameter: Fix this replacement

New features

• KT-11525 Implement “Create type parameter” quickfix
• KT-9931 Implement “Remove unused assignment” quickfix
• KT-14245 Implement “Convert enum to sealed class” intention
• KT-14245 Implement “Convert sealed class to enum” intention

Refactorings

• KT-13535 Pull Up: Remove visibility modifiers on adding ‘override’
• KT-13216 Move: Report separate conflicts for each property accessor
• KT-13216 Move: Forbid moving of enum entries
• KT-13553 Move: Do not show directory selection dialog if target directory is already specified by drag-and-drop
• KT-8867 Rename: Rename all overridden members if user chooses to refactor base declaration(s)
• Pull Up: Drop ‘override’ modifier if moved member doesn't override anything
• KT-13660 Move: Do not drop object receivers when calling variable of extension functional type
• KT-13903 Move: Remove companion object which becomes empty after the move
• KT-13916 Move: Report visibility conflicts in import directives
• KT-13906 Move Nested Class to Upper Level: Do not show directory selection dialog twice
• KT-13901 Move: Do not ignore target directory selected in the dialog (DnD mode)
• KT-13904 Move Nested Class to Upper Level: Preserve state of “Search in comments”/“Search for text occurrences” checkboxes
• KT-13909 Move Files/Directories: Fix behavior of “Open moved files in editor” checkbox
• KT-14004 Introduce Variable: Fix exception on trying to extract variable of functional type
• KT-13726 Move: Fix bogus conflicts due to references resolving to wrong library version
• KT-14114 Move: Fix exception on moving Kotlin file without declarations
• KT-14157 Rename: Rename do-while loop variables in the loop condition
• KT-14128, KT-13862 Rename: Use qualified class name when looking for occurrences in non-code files
• KT-6199 Rename: Replace non-code class occurrences with new qualified name
• KT-14182 Move: Show error message on applying to enum entries
• Extract Function: Support implicit abnormal exits via Nothing-typed expressions
• KT-14285 Rename: Forbid on backing field reference
• KT-14240 Introduce Variable: Do not replace assignment left-hand sides
• KT-14234 Rename: Do not suggest type-based names for functions with primitive return types

New features

• KT-13155 Implement “Introduce Type Parameter” refactoring
• KT-11017 Implement “Extract Superclass” refactoring
• KT-11017 Implement “Extract Interface” refactoring Pull Up: Support properties declared in the primary constructor Pull Up: Support members declared in the companion object of the original class Pull Up: Show member dependencies in the refactoring dialog
• KT-9485 Push Down: Support moving members from Java to Kotlin class
• KT-13963 Rename: Implement popup chooser for overriding members

Android Lint

Issues fixed

• KT-12022 Report lint warnings even when file contains errors

1.0.4

Compiler

Analysis & diagnostics

• KT-10968, KT-11075, KT-12286 Type inference of callable references
• KT-11892 Report error on qualified super call to a supertype extended by a different supertype
• KT-12875 Report error on incorrect call of member extension invoke
• KT-12847 Report error on accessing protected property setter from super class' companion
• KT-12322 Overload resolution ambiguity with constructor reference when class has a companion object
• KT-11440 Overload resolution ambiguity on specialized Map.put implementation from Java
• KT-11389 Runtime exception when calling Java primitive overloadings
• KT-8200 Exception when using non-generic interface with generic arguments
• KT-10237 Exception on an unresolved symbol in a type parameter bound in the ‘where’ clause
• KT-11821 Exception on incorrect number of generic arguments in a type parameter bound in the ‘where’ clause
• KT-12482 Exception: Implementation doesn't have the most specific type, but none of the other overridden methods does either
• KT-12687 Exception when ‘data’ modifier is applied to object
• KT-9620 AssertionError in DescriptorResolver#checkBounds
• KT-3689 IllegalAccess on a property with private setter of the subclass
• KT-6391 Wrong warning for array casting (Array<Any?> to Array)
• KT-8596 Exception when analyzing nested class constructor reference in an argument position
• KT-12982 Incorrect type inference when accessing mutable protected property via reflection
• KT-13206 Report “Cast never succeeds” if and only if ClassCastException can be predicted
• KT-12467 IllegalStateException: Concrete fake override should have exactly one concrete super-declaration: []
• KT-13340 Report “return is not allowed here” only on the return keyword, not the whole expression
• KT-2349, KT-6054 Report “uninitialized enum entry” if enum entry is referenced before its declaration
• KT-12809 Report “uninitialized variable” if property is referenced before its declaration
• KT-260 Do not report “cast never succeeds” when casting nullable to nullable
• KT-11769 Prohibit access from enum instance initialization code to members of enum's companion object
• KT-13371 Fix CompilationException: Rewrite at slice LEAKING_THIS key: REFERENCE_EXPRESSION
• KT-13401 Fix StackOverflowError when checking variance
• KT-13330, KT-13349 Fix AssertionError: Illegal resolved call to variable with invoke
• KT-13421 Fix AssertionError: Only integer constants should be checked for overflow
• KT-13555 Fix internal error “resolveToInstruction”
• KT-8989 Change error messages: Replace “invisible_fake” with “invisible (private in a supertype)”
• KT-13612 Val reassignment in try / catch
• KT-5469 Incorrect “is never used” warning for value used in catch block
• KT-13510 Missing “Nested class not allowed” error for anonymous object inside val initializer
• KT-13685 Fix NPE when resolving callable references on incomplete code
• Change error messages: Fix quotes around keywords in diagnostic messages
• Change error messages: Remove quotes around visibilities

Parser

• KT-7118 Improve error message after trailing dot in floating point literal
• KT-4948 Recover by following keyword
• KT-7915 Recover after val with no subsequent name
• KT-12987 Recover after val with no name before declaration starting with soft keyword

JVM code generation

• KT-12909 Do not generate redundant bridge for special built-in override
• KT-11915 Exception in entrySet when Map implementation in Kotlin extends another one
• KT-12755 Exception on property generation in multi-file classes
• KT-12983 VerifyError: Bad type on operand stack in arraylength
• KT-12908 Variable initialization in loop causes VerifyError: Bad local variable type
• KT-13040 Invalid bytecode generated for extension lambda invocation with safe call
• KT-13023 Char operations throw ClassCastException for boxed Chars
• KT-11634 Exception for super call in delegation
• KT-12359 Redundant stubs are generated on inheriting from java.util.Collection
• KT-11833 Error generating constructors of class on anonymous object inheriting from nested class of super class
• KT-13133 Incorrect InnerClasses attribute value for anonymous object copied from an inline function
• KT-13241 Indices optimization leads to VerifyError with smart cast receiver
• KT-13374 Fix compiler exception when inline function contains anonymous object implementing an interface by delegation

Generated code performance

• KT-11964 No TABLESWITCH in when on enum bytecode if enum constant is imported
• KT-6916 Optimize ‘for’ over ‘downTo’
• KT-12733 Optimize ‘for’ over ‘rangeTo’ as a non-qualified call

Standard Library

• KT-13115, KT-13297 Improve documentation formatting, clarify documentation for FileTreeWalk, Sequence and generateSequence.
• KT-12894 Do not fail in Closeable.use if the resource is null.

Reflection

• KT-12915 Runtime exception on callBy of JvmStatic function with default arguments
• KT-12967 Runtime exception on reference to generic property
• KT-13370 NullPointerException on companionObjectInstance of a built-in class
• KT-13462 Make KClass for primitive type equal to the corresponding KClass for wrapper type

IDE

• KT-12655 New Kotlin file: extra error message for already existing file
• KT-12760 Prohibit running non-Unit returning main function
• KT-12893 Impossible to open Kotlin compiler settings
• KT-10433 Copy-pasting reference to companion object member causes import dialog
• KT-12803 Class is marked as unused when it is only used is in method reference
• KT-13084 Run test method action executes all tests from same kotlin file
• KT-12718 Deadlock due to index reentering
• KT-13114 ‘Unused declaration’ option ‘JUnit static methods’ is always enabled
• KT-12997 Override/Implement Members: Support “Copy JavaDoc” options for library classes
• KT-12887 “Extend selection” should select call's invoked expression
• KT-13383, KT-13379 Override/Implement Members: Do not make return type non-nullable if base return type is explicitly nullable
• KT-13218 Extract Function: Fix AssertionError on callable references
• KT-6520 Introduce ‘maino’ and ‘psvmo’ templates for generating main in object
• KT-13455 Override/Implement: Make return type non-nullable (platform collection case) when overriding Java method
• KT-10209 Find Usages: Do not duplicate containing declaration in super member warning dialog
• KT-12977 Hybrid dependency causes “outdated binary” warning to appear in non-js project
• KT-13057 Go to inheritors on Enum should navigate to all enum classes
• Fix exception when choose Gradle configurer after project is synced
• Allow configuring Kotlin in Gradle module without Kotlin sources
• Show all Kotlin annotations when browsing hierarchy of “java.lang.Annotation”

Completion

• KT-12793 Suggest abstract protected extension methods

Performance

• KT-12645 Lazily calculate FQ name for local classes
• KT-13071 Fix severe freezes because of long lint checks on large files

Highlighting

• KT-12937 Java synthetic accessors highlighting does not differ from local variables

KDoc

• KT-12998 Backslash is not rendered
• KT-12999 Backtick inside inline code block is not rendered
• KT-13000 Exclamation mark is not rendered
• KT-10398 Fully qualified link is not resolved in editor
• KT-12932 Link to library element is not clickable
• KT-10654 Quick Doc can't follow KDoc link in referenced function description
• KT-9271 Show Quick Doc for implicit lambda parameter ‘it’

Formatter

• KT-12830 Remove spaces before ? in nullable types
• KT-13314 Format spaces around !is and !in

Intention actions, inspections and quickfixes

New features

• KT-12152 “Leaking this” inspection reports dangerous operations inside constructors including:

  • Accessing non-final property in constructor
  • Calling non-final function in constructor
  • Using ‘this’ as function argument in constructor of non-final class

• KT-13187 “Make constructor parameter a val” should make the val private or public depending on its option

• KT-5771 Mark setter parameter type as redundant and provide quickfix to remove it

• KT-9228 Add quickfix to remove ‘@’ from annotation used as argument of another annotation

• KT-12251 Add quickfix to fix type mismatch for primitive literals

• KT-12838 Add quickfix for “Illegal usage of inline parameter” that adds noinline

• KT-13134 Add quickfix for wrong Long suffix (Use L instead of l)

• KT-10903 Add intention to convert lambda to function reference

• KT-7492 Support “Create abstract function/property” inside an abstract class

• KT-10668 Support “Create member/extension” corresponding to the extension receiver of enclosing function

• KT-12553 Show versions in inspection about different version of Kotlin plugin in Maven and IDE plugin

• KT-12489 Implement intention to replace camel-case test function name with a space-separated one

• KT-12730 Warn about using different versions of Kotlin Gradle plugin and bundled compiler

• KT-13173 Handle more cases in “Add Const Modifier” Intention

• KT-12628 Quickfix for invoke operator unsafe calls

• KT-11425 Inspection and quickfix to replace usages of equals() and compareTo() with operators

• KT-13113 Inspection to detect redundant string templates

• KT-13011 Inspection and quickfix for unnecessary lateinit

• KT-10731 Inspection and quickfix for unnecessary use of toString() inside string interpolation

• KT-12043 Intention to add / remove braces for when entry/entries

• KT-13483 Intention to replace a..b-1 with a until b and vice versa

• KT-6975 Quickfix for adding ‘inline’ to a function with reified generic

Bugfixes

• Show receiver type in the text of “Create extension” quick fix
• Show target class name in the text of “Create member” quick fix
• KT-12869 Usages of overridden Java method through synthetic accessors are not found
• KT-12813 “Find Usages” for property returns function calls
• KT-7722 Approximate unresolvable types in “Create from Usage” quickfixes
• KT-11115 Implement Members: Fix base member detection when abstract and non-abstract members with matching signatures are inherited from an interface
• KT-12876 Bogus suggestion to move property to constructor
• KT-13055 Exception in “Specify Type Explicitly” intention
• KT-12942 “Replace ‘when’ with ‘if’” intention changes semantics when ‘if’ statements are used
• KT-12646 ‘Convert to block body’ should use partial body resolve
• KT-12919 Use simple class name in “Change function return type” quickfix
• KT-13151 Incorrect warning “Make variable immutable”
• KT-13170 “Declaration has platform type” inspection: by default should not be reported for platform type arguments
• KT-13262 “Wrap with safe let call” quickfix produces wrong result for qualified function
• KT-13364 Do not suggest creating annotations/enum classes for unresolved type parameter bounds
• KT-12627 Allow warnings suppression for secondary constructor
• KT-13365 Disable “Create property” (non-abstract) in interfaces. Make “Create function” (non-abstract) generate function body in interfaces
• KT-8903 Remove Unused Receiver: update function/property usages
• KT-11799 Create from Usage: Make extension functions/properties ‘private’ by default
• KT-11795 Create from Usage: Place extension properties after the usage and generate stub getter
• KT-12951 Prohibit “Convert to expression body” when function body is ‘if’ without ‘else’ or ‘when’ is non-exhaustive
• KT-13430 “Add non-null asserted (!!) call” quickfix can't process unary operators
• KT-13336 “Convert concatenation to template” intention appends literal to variable omitting braces
• KT-13328 Do not suggest “Replace infix with safe call” inside conditions or binary / unary expressions
• KT-13452 “Replace if expression with assignment” doesn't work for cascade if-else if-else
• KT-13184 “Different Kotlin Version” inspection: false positive caused by verbose plugin version name
• KT-13480 “Can be replaced with comparison” inspection: false positive if extension method called ‘equals’ is used
• KT-13288 “Unused property” inspection: false positive when extending abstract class and implementing interface
• KT-13432 “Replace with safe call” quickfix does not work with compareTo() usage
• KT-13444 “Invert if” intention changes semantics for nested if with return
• KT-13536 Fix StackOverflowError from “Unused Symbol” inspection after importing enum's values()
• KT-12820 Platform Type Inspection: !! quickfix shouldn't be available when any generic parameter has platform type
• KT-9825 Incorrect “unused variable” warning when used in finally block
• KT-13715 Prohibit applying “Change to star projection” to functional types

Refactorings

New features

• KT-12017 Inline Property: Support “Do not show this dialog” and “Inline this occurrence” options

Bugfixes

• KT-11176 Add a space before ‘{’ in functions generated “Generate hashCode/equals/toString”
• KT-12294 Introduce Property: Fix extraction of expressions referring to primary constructor parameters
• KT-12413 Change Signature: Fix bogus warning about unresolved type parameters/invalid functional type replacement
• KT-12084 Introduce Property: Do not skip outer classes if extractable expression is contained in object literal
• KT-13082 Rename: Fix exception on property rename preview
• KT-13207 Safe delete: Fix exception when removing any function in 2016.2
• KT-12945 Rename: Fix function description in super method warning dialog
• KT-12922 Introduce Variable: Do not suggest expressions without type
• KT-12943 Rename: Show function signatures in “Rename Overloads” dialog
• KT-13157 Extract Function: Automatically quote function name if necessary
• KT-13010 Extract Function: Fix generation of destructuring declarations
• KT-13128 Introduce Variable: Retain entered name after changing “Specify type explicitly” option
• KT-13054 Introduce Variable: Skip leading/trailing comments inside selection
• KT-13385 Move: Quote package name (if necessary) when moving declarations to new file
• KT-13395 Introduce Property: Fix duplicate count in popup window
• KT-13277 Change Signature: Fix usage processing to prevent interfering with Python support plugin
• KT-13254 Rename: Conflict detection for type parameters
• KT-13282, KT-13283 Rename: Fix name quoting for automatic renamers
• KT-13239 Rename: Warn about function name conflicts
• KT-13174 Move: Warn about accessibility conflicts due to moving to unrelated module
• KT-13175 Move: Warn about accessibility conflicts when moving entire file
• KT-13240 Rename: Do not report shadowing conflict if redeclaration is detected
• KT-13253 Rename: Report conflicts for constructor parameters
• KT-12971 Push Down: Do not specifiy visibility on generated overriding members
• KT-13124 Pull Up: Skip super members without explicit declarations
• KT-13032 Rename: Support accessors with non-conventional names
• KT-13463 Rename: Quote parameter name when necessary
• KT-13476 Rename: Fix parameter rename when new name matches call selector
• KT-9381 Rename: Do not search for component convention usages
• KT-13488 Rename: Support rename of packages with non-standard quoted names

Debugger

New features

• KT-7549 Provide an option to use the Kotlin syntax when evaluating watches and expressions in Java files

Bugfixes

• KT-13059 Fix error stepping on Step Over action in the end of while block
• KT-13037 Fix possible deadlock in debugger in 2016.1 and exception in 2016.2
• KT-12651 Fix exception in evaluate expression when bad identifier is used for marking object
• KT-12896 Fix “Step In” to inline functions for Android
• KT-13269 Make quick evaluate work on receiver in qualified expressions
• KT-12641 Unknown error on evaluate expression containing inline functions with complicated environment
• KT-13163 Fix exception when evaluating expression: Access is allowed from event dispatch thread only.

JS

New features

• KT-3008 Option to generate require.js and AMD compatible modules
• KT-5987 Add ability to refer to class
• KT-4115 Provide method to get Kotlin type name

Bugfixes

• KT-8003 Compiler exception on ‘throw throw’
• KT-8318 Wrong result for ‘when’ containing only ‘else’ block
• KT-12157 Compiler exception on when condition containing return, break or continue
• KT-12275 Fix code generation with inline function call in condition of while/do..while
• KT-13160 Fix compiler exception when left-hand side of assignment is array access and right-hand side is inline function
• KT-12864 Make enums comparable
• KT-12865 Implementing Comparable breaks inheritance
• KT-12928 Nested inline causes undefined reference access
• KT-12929 Code with callable reference crashed at runtime (in some JS VMs)
• KT-13043 Invalid invocation generated for secondary constructor that calls constructor from base class with default parameters
• KT-13025 ‘function?.invoke’ does not work properly with extension functions
• KT-12807 Lambda was lost in generated code
• KT-12808 Compiler duplicates arguments and the body of lambda when lambda is in RHS of assignment operator
• KT-12873 Fix ReferenceError when class delegates to complex expression
• KT-13658 Wrong code when capturing object

Tools

Gradle

• Gradle versions < 2.0 are not supported
• KT-13234 Setting kotlinOptions.destination and kotlinOptions.classpath is deprecated
• KT-9392 Kotlin classes are missing after converting Java class to Kotlin
• KT-12736 Kotlin classes are deleted when generated Java source is changed
• KT-12658 Build fails after android resources are edited
• KT-12750 Non clean compilation fails with gradle 2.14
• KT-12912 New class from subproject is unresolved with subsequent build with Gradle Daemon
• KT-12962 Incremental compilation: Track changes in generated files
• KT-12923 Incremental compilation: Compile error when code using internal class is modified
• KT-13528 Incremental compilation: support multi-project incremental compilation
• KT-13732 Android Build folder littered with copyFlavourTypeXXX

KAPT

New features

• KT-13499 Implement Annotation Processing API (JSR 269) natively in Kotlin

Bugfixes

• KT-12776 Android build fails with KAPT and generateStubs depending on library module names
• KT-13179 Java is recompiled every time with Gradle 2.14 and KAPT
• KT-12303, KT-12113 Do not pass non-relevant annotations to processors

REPL

• KT-12389 REPL just quits when toString() of user class throws an exception

CLI & Ant

• KT-13237 Include kotlin-reflect.jar to classpath by default, add ‘-no-reflect’ key to suppress this behavior

CLI

• KT-13491 Support ‘-no-reflect’ in ‘kotlin’ command

Maven

• KT-13211 Provide better compilation failure info for TeamCity builds

Compiler daemon

• Fix exception “java.lang.NoClassDefFoundError: Could not initialize class kotlin.Unit”

1.0.3

Compiler

Analysis & diagnostics

• Combination of open and override is no longer a warning
• KT-4829 Equal conditions in when is now a warning
• KT-6611 “This cast can never succeed” warning is no longer reported for Foo<T> as Foo<Any>
• KT-7174 Declaring members with the same signature as non-overridable methods from Java classes (like Object.wait/notify) is now an error (when targeting JVM)
• KT-12302 abstract modifier for a member of interface is no longer a warning
• KT-12452 open modifier for a member of interface without implementation is now a warning
• KT-11111 Overriding by inline function is now a warning, overriding by a function with reified type parameter is an error
• KT-12337 Reference to a property with invisible setter now has KProperty type (as opposed to KMutableProperty)

Issues fixed

• KT-4285 No warning for a non-tail call when the method inherits default arguments from superclass
• KT-4764 Spurious “Variable must be initialized” in try/catch/finally
• KT-6665 Unresolved reference leads to marking subsequent code unreachable
• KT-11750 Exceptions when creating various entries with the name “name” in enums
• KT-11998 Smart cast to not-null is not performed on a boolean property in if condition
• KT-10648 Exhaustiveness check does not work when sealed class hierarchy contains intermediate sealed classes
• KT-10717 Type inference for lambda with local return
• KT-11266 Fixed “Empty intersection of types” internal compiler error for some cases
• KT-11857 Fix visibility check for dynamic members within protected method (when targeting JS)
• KT-12589 Improved “infix modifier is inapplicable” diagnostic message
• KT-11679 Erroneous call with argument causes Throwable at ResolvedCallImpl.getArgumentMapping()
• KT-12623 Fix ISE on malformed code

JVM code generation

• KT-5075 Optimize array/collection indices usage in for loop
• KT-11116 Optimize coercion to Unit, POP operations are backward-propagated

Issues fixed

• KT-11499 Compiler crashes with “Incompatible stack heights”
• KT-11943 CompilationException with extension property of KClass
• KT-12125 Wrong increment/decrement on Byte/Char/Short.MAX_VALUE/MIN_VALUE
• KT-12192 Exhaustiveness check isn't generated for when expression returning Unit
• KT-12200 Erroneously optimized away assignment to a property initialized to zero
• KT-12582 “VerifyError: Bad local variable type” caused by explicit loop variable type
• KT-12708 Bridge method not generated when data class implements interface with copy() method
• KT-12106 import static of reified companion object method throws IllegalAccessError

Performance

• Reduced number of IO operation when loading kotlin compiled classes

Сompiler options

• Allow to specify version of Kotlin language for source compatibility with older releases.
  • CLI: -language-version command line option
  • Maven: languageVersion configuration parameter, linked with kotlin.compiler.languageVersion property
  • Gradle: kotlinOptions.languageVersion property in task configuration
• Allow to specify which java runtime target version to generate bytecode for.
  • CLI: -jvm-target command line option
  • Maven: jvmTarget configuration parameter, linked with kotlin.compiler.jvmTarget property
  • Gradle: kotlinOptions.jvmTarget property in task configuration
• Allow to specify path to JDK to resolve classes from.
  • CLI: -jdk-home command line option
  • Maven: jdkHome configuration parameter, linked with kotlin.compiler.jdkHome property
  • Gradle: kotlinOptions.jdkHome property in task configuration

Standard Library

• Improve documentation (including KT-11632)
• List iteration used in collection operations is performed with an indexed loop when the list supports RandomAccess and the operation isn't inlined

IDE

Completion

New features

• Smart completion after by and in
• Improved completion in bodies of overridden members (when no type is specified)
• Improved presentation of completion items for property accessors
• Fixed keyword completion after try in assignment expression
• KT-8527 Include non-imported declarations on the first completion
• KT-12068 Special completion item for “[]” get-operator access
• KT-12080 Parameter names are now higher up in completion list

Issues fixed

• Fixed enum members being present in completion as static members
• Fixed QuickDoc not working for properties generated for java classes
• KT-9166 Code completion does not work for synthetic java properties on typing “g”
• KT-11609 No named arguments completion should be after dot
• KT-11633 Wrong indentation after completing a statement in data class
• KT-11680 Code completion of label for existing return with value inserts redundant whitespace
• KT-11784 Completion for if statement should add parentheses automatically
• KT-11890 Completion for callable references does not propose static Java members
• KT-11912 String interpolation is not converted to ${} form when accessing this.property
• KT-11957 No catch and finally keywords in completion
• KT-12103 Smart completion for nested SAM-adapter produces short unresolved name
• KT-12138 Do not show “::error” in smart completion when any function type accepting one argument is expected
• KT-12150 Smart completion suggests to compare non-nullable with null
• KT-12124 No code completion for a java property in a specific position
• KT-12299 Completion: incorrect priority of property foo over method getFoo in Kotlin-only code
• KT-12328 Qualified function name inserted when typing before if
• KT-12427 Completion doesn't work for “@receiver:” annotation target
• KT-12447 Don't use CompletionProgressIndicator in Kotlin plugin
• KT-12669 Completion should show variant with () when there is default lambda
• KT-12369 Pressing dot after class name should not cause insertion of constructor call

Spring support

New features

• KT-11692 Support Spring model diagrams for Kotlin classes
• KT-12079 Support “Autowired members defined in invalid Spring bean” inspection on Kotlin declarations
• KT-12092 Implement bean references in @Qualifier annotations
• KT-12135 Automatically configure components based on basePackageClasses attribute of @ComponentScan
• KT-12136 Implement package references inside of string literals
• KT-12139 Support Spring configurations linked via @Import annotation
• KT-12278 Implement Spring @Autowired inspection
• KT-12465 Implement Spring @ComponentScan inspection

Issues fixed

• KT-12091 Fixed unstable behavior of Spring line markers
• KT-12096 Fixed rename of custom-named beans specified with Kotlin annotation
• KT-12117 Group Kotlin classes from the same file in the Choose Bean dialog
• KT-12120 Show autowiring candidates line markers for @Autowired-annotated constructors and constructor parameters
• KT-12122 Fixed line marker popup on functions with @Qualifier-annotated parameters
• KT-12143 Fixed “Spring Facet Code Configuration (Kotlin)” inspection description
• KT-12147 Fixed exception on analyzing object declaration with @Component annotation
• KT-12148 Warn about object declarations annotated with Spring @Configuration/@Component/etc.
• KT-12363 Fixed “Autowired members defined in invalid Spring bean (Kotlin)” inspection description
• KT-12366 Fixed exception on analyzing class declaration upon annotation typing
• KT-12384 Fixed bean references in factory method calls

Intention actions, inspections and quickfixes

New features

• New icon for “New -> Kotlin Activity” action
• “Change visibility on exposure” and “Make visible” fixes now support all possible visibilities
• KT-8477 New inspection “Can be primary constructor property” with quick-fix
• KT-5010 “Redundant semicolon” inspection with quickfix
• KT-9757 Quickfix for “Unused lambda expression” warning
• KT-10844 Quick fix to add crossinline modifier
• KT-11090 “Add variance modifiers to type parameters” inspection
• KT-11255 Move Element Left/Right actions
• KT-11450 “Modality is redundant” inspection
• KT-11523 “Add @JvmOverloads annotation” intention
• KT-11768 “Introduce local variable” intention
• KT-11806 Quick-fix to increase visibility for invisible member
• KT-11807 Use function body template when generating overriding functions with default body
• KT-11864 Suggest “Create function/secondary constructor” quick fix on argument type mismatch
• KT-11876 Quickfix for “Extension function type is not allowed as supertype” error
• KT-11920 “Increase visibility” and “Decrease visibility” quickfixes for exposed visibility errors
• KT-12089 Quickfix “Make primary constructor parameter a property”
• KT-12121 “Add toString() call” quickfix
• KT-11104 New quickfixes for nullability problems: “Surround with null check” and “Wrap with safe let call”
• KT-12310 New inspection “Member has platform type” with quickfix

Issues fixed

• Fixed “Convert property initializer getter” intention being available inside lambda initializer
• Improved message for “Can be declared as val” inspection
• KT-3797 Quickfix to make a function abstract should not be offered for object members
• KT-11866 Suggest “Create secondary constructor” when constructors exist but are not applicable
• KT-11482 Fixed exception in “Move to companion object” intention
• KT-11483 Pass implicit receiver as argument when moving member function to companion object
• KT-11512 Allow choosing any source root in “Move file to directory” intention
• KT-10950 Keep original file package name when moving top-level declarations to separate file (provided it's not ambiguous)
• KT-10174 Optimize imports after applying “Move declaration to separate file” intention
• KT-11764 Intention "Replace with a forEach function call should replace continue with return@forEach
• KT-11724 False suggestion to replace with compound assignment
• KT-11805 Invert if-condition intention breaks code in case of end of line comment
• KT-11811 “Make protected” intention for a val declared in parameters of constructor
• KT-11710 “Replace if with elvis operator”: incorrect code generated for if expression
• KT-11849 Replace explicit parameter with it changes the meaning of code because of the shadowing
• KT-11870 “Replace with Elvis” refactoring doesn't change the variable type from T? to T
• KT-12069 Specify language for all Kotlin code inspections
• KT-11366 “object Companion is never used” warning in intellij
• KT-11275 Inconsistent behaviour of “move lambda argument out of parentheses” intention action when using lambda calls with function arguments without parentheses
• KT-11594 “Add non-null asserted (!!) call” applied to unsafe cast to nullable type causes AE at KtPsiFactory.createExpression()
• KT-11982 False “Redundant final modifier” reported
• KT-12040 “Replace when with if” produce invalid code for first entry which has comment
• KT-12204 “Use classpath of module” option in existing Kotlin run configuration may be changed when a new run configuration is created
• KT-10635 Don't mark private writeObject and readObject methods of Serializable classes as unused
• KT-11466 “Make abstract” quick fix applies to outer class of object with accidentally abstract function
• KT-11120 Constructor parameter/field reported as unused symbol even if it have used annotation
• KT-11974 Invert if-condition intention loses comments
• KT-10812 Globally unused constructors are not marked as such
• KT-11320 Don't mark @BeforeClass (JUnit4) annotated functions as unused
• KT-12267 “Change type” quick fix converts to Int for Long literal
• KT-11949 Various problems fixed with “Constructor parameter is never used as a property” inspection
• KT-11716 “Simply for using destructuring declaration” intention: incorrect behavior for data classes
• KT-12145 “Simplify for using destructuring declaration” should work even when no variables declared inside loop
• KT-11933 Entities used only by alias are marked as unused
• KT-12193 Convert to block body isn't equivalent for when expressions returning Unit
• KT-10779 Simplify for using destructing declaration: intention / inspection quick fix is available only when all variables are used
• KT-11281 Fix exception on applying “Convert to class” intention to Java interface with Kotlin inheritor(s)
• KT-12285 Fix exception on test class generation
• KT-12502 Convert to expression body should be forbidden for non-exhaustive when returning Unit
• KT-12260 ISE while replacing an operator with safe call
• KT-12649 “Convert if to when” intention incorrectly deletes code
• KT-12671 “Shot type” action: “Type is unknown” error on an invoked expression
• KT-12284 Too wide applicability range for “Add braces to else” intention
• KT-11975 “Invert if-condition” intention does not simplify is expression
• KT-12437 “Replace explicit parameter” intention is suggested for parameter of inner lambda in presence of it from outer lambda
• KT-12290 Navigate to the generated declaration when using “Implement abstract member” intention
• KT-12376 Don‘t show "Package directive doesn’t match file location" in injected code
• KT-12777 Fix exception in “Create class” quickfix applied to unresolved references in type arguments

Language injection

• Apply injection for the literals in property initializer through property usages
• Enable injection from Java or Kotlin function declaration by annotating parameter with @Language annotation
• KT-2428 Support basic use-cases of language injection for expressions marked with @Language annotation
• KT-11574 Support predefined Java positions for language injection
• KT-11472 Add comment or @Language annotation after “Inject language or reference” intention automatically

Refactorings

New features

• KT-6372 Add name suggestions to Rename dialog
• KT-7851 Respect naming conventions in automatic variable rename
• KT-8044, KT-9432 Support @JvmName annotation in rename refactoring
• KT-8512 Support “Rename tests” options in Rename dialog
• KT-9168 Support rename of synthetic properties
• KT-10578 Support automatic test renaming for facade files
• KT-12657 Rename implicit usages of annotation method value
• KT-12759 Suggest renaming both property accessors with matching @JvmName when renaming one of them from Java

Issues fixed

• KT-4791 Rename overridden property and all its accessors on attempt to rename overriding accessor in Java code
• KT-6363 Do not rename ambiguous references in import directives
• KT-6663 Fixed rename of ambiguous import reference to class/function when some referenced declarations are not changed
• KT-8510 Preserve “Search in comments and strings” and “Search for text occurrences” settings in Rename dialog
• KT-8541, KT-8786 Do now show ‘Rename overloads’ options if target function has no overloads
• KT-8544 Show more detailed description in Rename dialog
• KT-8562 Show conflicts dialog on attempt of redeclaration
• KT-8611 Qualify class references to resolve rename conflicts when possible
• KT-8732 Implement Rename conflict analysis and fixes for properties/parameters
• KT-8860 Allow renaming class by constructor delegation call referencing primary constructor
• KT-8892 Suggest renaming base declarations on overriding members in object literals
• KT-9156 Quote non-identifier names in Kotlin references
• KT-9157 Fixed in-place rename of Kotlin expression referring Java declaration
• KT-9241 Do not replace Java references to synthetic component functions when renaming constructor parameter
• KT-9435 Process property accessor usages (Java) in comments and string literals
• KT-9444 Rename dialog: Allow typing any identifier without backquotes
• KT-9446 Copy default parameter values to overriding function which is renamed while its base function is not
• KT-9649 Constraint search scope of parameter declared in a private member
• KT-10033 Qualify references to members of enum companions in case of conflict with enum entries
• KT-10713 Skip read-only declarations when renaming parameters
• KT-10687 Qualify property references to avoid shadowing by parameters
• KT-11903 Update references to facade class when renaming file via matching top-level class
• KT-12411 Fix package name quotation in Move refactoring
• KT-12543 Qualify property references with this to avoid renaming conflicts
• KT-12732 Copy default parameter values to overriding function which is renamed by Java reference while its base function is unchanged
• KT-12747 Fix exception on file copy

Java to Kotlin converter

New features

• KT-4727 Convert Java code copied from browser or other sources

Issues fixed

• KT-11952 Assertion failed in PropertyDetectionCache.get on conversion of access to Java constant of anonymous type
• KT-12046 Recursive property setter
• KT-12039 Static imports converted missing “.Companion”
• KT-12054 Wrong conversion of instanceof checks with raw types
• KT-12045 Convert Object() to Any()

Android Lint

Issues fixed

• KT-12015 False positive for Bundle.getInt()
• KT-12023 “minSdk” lint check doesn't work for as/is
• KT-12674 “Calling new methods on older versions” errors for inlined constants
• KT-12681 Running lint from main menu: diagnostics reported for java source files only
• KT-12173 False positive for “Toast created but not shown” inside SAM adapter
• KT-12895 NoSuchMethodError thrown when saving a Kotlin file

KDoc

New features

• Support for @receiver tag

Issues fixed

• Rendering of _ and * standalone characters
• Rendering of code blocks
• KT-9933 Indentation in code fragments is not preserved
• KT-10998 Spaces around links are missing in return block
• KT-11791 Markdown links rendering
• KT-12001 Allow use of @param to document type parameter

Maven support

New features

• Inspections that check that kotlin IDEA plugin, kotlin Maven plugin and kotlin stdlib are of the same version
• KT-11643 Inspections and intentions to fix erroneously configured Maven pom file
• KT-11701 “Add Maven Dependency quick fix” in Kotlin source files
• KT-11743 Intention to replace kotlin-test with kotlin-test-junit

Issues fixed

• KT-9492 Configuring multiple Maven Modules
• KT-11642 Kotlin Maven configurator tags order
• KT-11436 “Choose Configurator” control opens dialogs with inconsistent modality (linux)
• KT-11731 Default maven integration doesn't include documentation
• KT-12568 Execution configuration: file path completion works only in some sub-elements of
• KT-12558 Configure Kotlin in Project: “Undo” should revert changes in all poms
• KT-12512 “Different IDE and Maven plugin version” inspection is being invoked for non-tracked pom.xml files

Debugger

New features

• KT-11438 Support navigation from stacktrace to inline function call site

Issues fixed

• Do not step into inline lambda argument during step over inside inline function body
• Fix step over for inline argument with non-local return
• KT-12067 Deadlock in Kotlin debugger is fixed
• KT-12232 No code completion in Evaluate Expression and Throwable at CodeCompletionHandlerBase.invokeCompletion()
• KT-12137 Evaluate expression: code completion/intention actions allows to use symbols from modules that are not referenced
• KT-12206 NoSuchFieldError in Evaluate Expression on a property of a derived class
• KT-12678 NoSuchFieldError in Evaluate Expression on accessing delegated property defined in other module
• KT-12773 Fix debugging for Kotlin JS projects

Formatter

Issues fixed

• KT-12035 Spaces around as
• KT-12018 Spaces between function name and arguments in infix calls
• KT-11961 Spaces before angle bracket in method definition
• KT-12175 Don't enforce empty line between secondary constructors without body
• KT-12548 Spaces around is keyword
• KT-12446 Spaces before class type parameters
• KT-12634 Spaces between method name and parenthesis in method call
• KT-10680 Spaces around in keyword
• KT-12791 Spaces between curly brace and expression inside string template
• KT-12781 Spaces between annotation and expression
• KT-12689 Spaces around semicolons
• KT-12714 Spaces around parentheses in enum elements

Other

New features

• Added “Decompile” button to Kotlin bytecode toolwindow
• Added Kotlin “Tips of the day”
• Added “Kotlin 1.1 EAP” to “Configure Kotlin Plugin updates”
• KT-2919 Constructor calls are no longer highlighted as classes
• KT-6540 Infix function calls are now highlighted as regular function calls
• KT-9410 Annotations in Kotlin are now highlighted with the same color as in Java by default
• KT-11465 Type parameters in Kotlin are now highlighted with the same color as in Java by default
• KT-11657 Allow viewing decompiled Java source code for Kotlin-compiled classes
• KT-11704 Support file path references inside of Kotlin string literals
• KT-12076 Kotlin Plugin update check: always display installed version number
• KT-11814 New icon for kotlin annotation classes
• KT-12735 Convert JavaDoc to KDoc when overriding Java class member in Kotlin

Issues fixed

• KT-5960 Can't find usages for Java methods used from Kotlin by call convention
• KT-8362 “New Kotlin file”: Keywords should be escaped in package name
• KT-8682 Respect “Copy JavaDoc” option in the “Override/Implement Members...” dialog
• KT-8817 Fixed rename of Java getters/setters through synthetic property references in Kotlin
• KT-9399 Find Usages omits Kotlin annotation parameter usage in Java source
• KT-9797 “Kotlin Bytecode” toolwindow breaks after closing
• KT-11145 Use progress indicator when searching usages in Introduce Parameter
• KT-11155 Allow running multiple Kotlin classes as well as running mixtures of Kotlin and Java classes
• KT-11495 Show recursion line markers for extension function calls with different receiver
• KT-11659 Generate abstract overrides for Any members inside of Kotlin interfaces
• KT-12070 Add empty line in error message of Maven and Gradle configuration
• KT-11908 Allow properties with custom setters to be used in generated equals/hashCode/toString
• KT-11617 Fixed title of Introduce Parameter declaration chooser
• KT-11817 Fixed rename of Kotlin enum constants through Java references
• KT-11816 Fixed usages search for Safe Delete on simple enum entries
• KT-11282 Delete interface reference from super-type list when applying Safe Delete to Java interface
• KT-11967 Fix Find Usages/Rename for parameter references in XML files
• KT-10770 “Optimize imports” will not keep import if a type is only referenced by kdoc
• KT-11955 Copy/Paste inserts fully qualified name when copying function with overloads
• KT-12436 “Replace explicit parameter with it”: java.lang.Exception at BaseRefactoringProcessor.run()
• KT-12440 Removing unused parameter results in Exception “Refactorings should not be started inside write action”
• KT-12006 getLanguageLevel is slow for Kotlin light classes
• KT-12026 “Constant expression required” in Java for const Kotlin values
• KT-12259 ClassCastException in light classes while trying to create generic property
• KT-12289 Remove unnecessary ? from serr live template
• KT-12110 Map help button of the Compiler - Kotlin page
• KT-12075 Kotlin Plugin update check: make dumbaware
• KT-10255 call BuildManager.clearState(project) in apply() method of Kotlin Compiler Settings configurable
• KT-11841 New Project / Module wizard, Gradle: pure Kotlin module is created without repositories call in build.gradle
• KT-11095 Java cannot infer generic return type of Kotlin function (with java 8 language level)
• KT-12090 Intellij/Kotlin plugin does not handle generic return type of static method defined in Kotlin, called from Java
• KT-12206 Fix NoSuchFieldError on accessing base property without backing field in evaluate expression
• KT-12516 File Structure: Kotlin annotation classes have Java annotation icons
• KT-11328 “New Kotlin class”: generates packages when fully qualified name is specified
• KT-11778 Exception in Lombok plugin: Rewrite at slice FUNCTION
• KT-11708 “Go to declaration” doesn't work on a call to function with SAM conversion on a derived type
• KT-12381 Prefer not-nullable return type when overriding Java method without nullability annotation
• KT-12647 Performance improvement for test-related line markers
• KT-12526 Kotlin intentions increase PSI modification counts from isAvailable, even in daemon threads

Reflection

Issues fixed

• KT-11531 Optimize “KCallable.name”
• KT-10771 Reflection on Function objects does not support lambdas with generic return type
• KT-11824 Reflection inconsistency between member property and accessor

JS

• Improve performance of maps and sets

Issues fixed

• KT-6942 Generate structural equality check (i.e. Any.equals) instead of referential check (===) value equality patterns in when
• KT-7228 Wrong AbstractList signature
• KT-8299 Wrong access to private member in autogenerated code in data class
• KT-11346 Reified functions like filterIsInstance are now available in JS Standard Library
• KT-12305 Incorrect translation of vararg in @native functions
• KT-12254 JsEmptyExpression in initializer when compiling code like val x = throw Exception()
• KT-11960 Wrong code generated when a method of a local class calls constructor of the class
• KT-10931 Incorrect inlining of library method with optional parameters
• KT-12417 Wrong check cast generated for KMutableProperty

Tools

New features

• KT-11839 Maven goal to execute kotlin script

Issues fixed

• KAPT: fix error when using enum constructors with parameters
• Various problems with gradle 2.2 fixed: KT-12478, KT-12406, KT-12478
• KT-12595 JPS: Fixed com.intellij.util.io.MappingFailedException: Cannot map buffer
• KT-11166 Gradle: Unable to access internal classes from test code within the same module
• KT-12352 KAPT: Fix “Classpath entry points to a non-existent location” warnings
• KT-12074 Building Kotlin maven projects using a parent pom will silently fail
• KT-11770 Warning “RuntimeException: Could not find installation home path” when using Gradle Incremental Compilation
• KT-10969 Android extensions: NullPointerException when finding view in Fragment
• KT-11885 Gradle/Android: Unresolved reference “kotlinx” when classpath dependency is defined in root build.gradle
• KT-12786 Deprecation warning with Gradle 2.14

1.0.2-1

• KT-12159, KT-12406, KT-12431, KT-12478 Support Android Studio 2.2
• KT-11770 Fix warning “RuntimeException: Could not find installation home path” when using incremental compilation in Gradle
• KT-12436, KT-12440 Fix multiple exceptions during refactorings in IDEA 2016.2 EAP
• KT-12015, KT-12047, KT-12387 Fix multiple issues in Kotlin Lint checks

1.0.2

Compiler

Analysis & diagnostics

• KT-7437, KT-7971, KT-7051, KT-6125, KT-6186, KT-11649 Implement missing checks for protected visibility
• KT-11666 Report “Implicit nothing return type” on non-override member functions
• KT-4328, KT-11497, KT-10493, KT-10820, KT-11368 Report error if some classes were not found due to missing or conflicting dependencies
• KT-11280 Do not perform smart casts for values with custom equals compared with ==
• KT-3856 Fix wrong “inner class inaccessible” diagnostic for extension to outer class
• KT-3896, KT-3883, KT-4986 do...while (true) is now considered an infinite loop
• KT-10445 Prohibit initialization of captured val in lambda or in local function
• KT-10042 Correctly handle local classes and anonymous objects in control flow analysis
• KT-11043 Prohibit complex expressions with class literals in annotation arguments
• KT-10992, KT-11007 Fix multiple problems related to smart casts
• KT-11490 Prohibit nested intersection types in return position
• KT-11411 Report “illegal noinline/crossinline” on parameter of subtype of function type
• KT-3083 Report “conflicting overloads” for functions with parameter of type parameter type
• KT-7265 Parse anonymous functions in blocks as expressions
• KT-8246 Handle break/continue for outer loop correctly in case of try/finally in between
• KT-11300 Report error on increment or augmented assignment when get is an operator but set is not
• Report warning about unused anonymous functions
• Improve callable reference type in some ambiguous cases
• Improve multiple diagnostic messages: KT-10761, KT-9760, KT-10949, KT-9887, KT-9550, KT-11239, KT-11819
• Fix several compiler bugs leading to exceptions: KT-9820, KT-11597, KT-10983, KT-10972, KT-11287, KT-11492, KT-11765, KT-11869

JVM code generation

• KT-8269, KT-9246, KT-10143 Fix visibility of protected classes in bytecode
• KT-11363 Fix potential binary compatibility breakage on using when over enums in inline functions
• KT-11762 Fix VerifyError caused by explicit loop variable type
• KT-11645 Fix NoSuchFieldError on private const property in multi-file class
• KT-9670 Optimize Class <-> KClass wrapping/unwrapping when getting values from annotation
• KT-6842 Optimize unnecessary boxing and interface calls on iterating over ranges
• KT-11025 Don't inline const val properties in non-annotation contexts
• KT-5429 Write nullability annotations on extension receiver parameters
• KT-11347 Preserve source file and line number of call site when inlining certain standard library functions
• KT-11677 Write correct generic signatures for local classes in inlined lambdas
• KT-12127 Do not write unnecessary generic signature for property delegate backing field
• Fix multiple issues leading to exceptions or bad bytecode being generated: KT-11034, KT-11519, KT-11117, KT-11479

Java interoperability

• KT-3068 Load contravariantly projected collections in Java (List<? super T>) as mutable collections in Kotlin (MutableList<in T>)
• KT-11322 Do not lose type nullability information in SAM constructors
• KT-11721 Fix wrong “Typechecker has run into recursive problem” error on calling Kotlin get function as synthetic Java property
• KT-10691 Fix wrong “Inherited platform declarations clash” error on inheritance from generic Java class with overloaded methods

Command line compiler

• KT-9546 Flush stdout and stderr before shutdown when executing scripts
• KT-10605 Disable colored output on certain platforms to prevent crashes
• Report warning instead of error on unknown “-X” flags
• Remove the compiler option “Xmultifile-facades-open”

Compiler daemon

• Reduce read disk activity
• Fix compiler daemon JAR cache clearing on IDEA Ultimate

Standard library

• KT-11410 Reduce method count of the standard library by ~2k
• KT-9990 Optimize snapshot operations to return special collection implementations when result is empty or has single element
• KT-10794 EmptyList now implements RandomAccess
• KT-10821 Create at most one wrapper sequence for adjacent drop/take operations on sequences
• KT-11301 Make Map.plus accept Map out-projected by key type as either operand (receiver or parameter)
• KT-11485 Remove implementations of some internal intrinsic functions
• KT-11648 Add deprecated extension MutableList.remove to redirect to valid function removeAt
• KT-11348 kotlin.test: Make inline methods todo and currentStackTrace @InlineOnly not to lose stack trace
• KT-11745 Rename parameters of String.subSequence to match those of CharSequence.subSequence
• KT-10953 Clarify parameter order of lambda function parameter of *Indexed functions
• KT-10198 Improve docs for binarySearch functions
• KT-9786 Improve docs for trimIndent/trimMargin

Reflection

• KT-9952 Improve toString() for lambdas and function expressions when kotlin-reflect.jar is available
• KT-11433 Fix multiple resource leaks by closing InputStream instances
• KT-8131 Fix exception from calling KProperty.javaField on a subclass
• KT-10690 Support javaMethod and kotlinFunction for top level functions in a different file
• KT-11447 Support reflection calls to multifile class members
• KT-10892 Load annotations of const properties from multifile classes
• KT-11258 Don't crash on requesting members of Java collection classes
• KT-11502 Clarify KClass equality

JS

• KT-4124 Support nested classes
• KT-11030 Support local classes
• KT-7819 Support non-local returns in local lambdas
• KT-6912 Safe calls (x?.let { it }) are now inlined
• KT-2670 Support unsafe casts (as)
• KT-7016, KT-8012 Fix is-checks for reified type parameters
• KT-7038 Avoid unwanted side effects on is-checks for nullable types
• KT-10614 Copy array on vararg call with spread operator
• KT-10785 Correctly translate property names and receiver instances in assignment operations
• KT-11611 Fix translation of default value of secondary constructor's functional parameter
• KT-11100 Fix generation of invoke on objects and companion objects
• KT-11823 Fix capturing of outer class' this in inner's lambdas
• KT-11996 Fix translation of a call to a private member of an outer class from an inner class which is a subtype of the outer class
• KT-10667 Support inheritance from nested built-in types such as Map.Entry
• KT-7480 Remove declarations of LinkedList, SortedSet, TreeSet, Enumeration
• KT-3064 Implement CharSequence.repeat

IDE

New features:

• Spring Support
  • KT-11098 Inspection on final classes/functions annotated with Spring @Configuration/@Component/@Bean
  • KT-11405 Navigation and Find Usages for Spring beans referenced in annotation arguments and BeanFactory method calls
  • KT-3741 Show Spring-specific line markers on Kotlin classes
  • KT-11406 Support Spring EL injections inside of Kotlin string literals
  • KT-11604 Support “Configure Spring facet” inspection on Kotlin classes
  • KT-11407 Implement “Generate Spring Dependency...” actions
  • KT-11408 Implement “Generate @Autowired Dependency...” action
  • KT-11652 Rename bean attributes mentioned in Spring XML config together with corresponding Kotlin declarations
• Enable precise incremental compilation by default in non-Maven/Gradle projects
• KT-11612 Highlight named arguments
• KT-7715 Highlight vars that can be replaced by vals
• KT-5208 Intention action to convert string to raw string and back
• KT-11078 Quick fix to remove .java when KClass is expected
• KT-1494 Inspection to highlight public members with no documentation
• KT-8473 Intention action to implement interface or abstract class
• KT-10299 Inspection to warn on array properties in data classes
• KT-6674 Inspection to warn on protected symbols in effectively final classes
• KT-11576 Quick fix to suppress “Unused symbol” warning based on annotations on the declaration
• KT-10063 Quick fix for adding arrayOf wrapper for annotation parameters
• KT-10476 Quick fix for converting primitive types
• KT-10859 Quick fix to make var with private setter final
• KT-9498 Quick fix to specify property type
• KT-10509 Quick fix to simplify condition with senseless comparison
• KT-11404 Quick fix to let type implement missing interface
• KT-6785, KT-10013, KT-9996, KT-11675 Support Smart Enter for trailing lambda argument, try/catch/finally, property setter, init block
• Add kotlinClassName() and kotlinFunctionName() macros for use in live templates
• Auto-configure EAP-repository during Kotlin Maven and Gradle project set up

Issues fixed:

• KT-11678, KT-4768 Support navigation to Kotlin libraries from Java sources
• KT-9401 Support Change Signature quick fix for Java -> Kotlin case
• KT-8592 Fix “Choose sources” for Kotlin files
• KT-11256 Fix Navigate to declaration for Java constructor with @NotNull parameter
• KT-11018 Fix vars shown in Ctrl + Mouse Hover as vals
• KT-5105, KT-11024 Improve incompatible ABI versions editor strap, show the hint on how to resolve the problem
• KT-11638 Fixed hashCode() implementation in “Generate equals/hashCode” action
• KT-10971 Pull Members Up: Always insert spaces between keywords
• KT-11476, KT-4175, KT-10965, KT-11076 Formatter: fix multiple issues regarding space handling
• KT-9025 Improve “Create Kotlin Java runtime library” dialog usability
• KT-11481 Fix “Add import” intention not being available for is branches in when
• KT-10619 Fix completion after package name in annotation
• KT-10621 Do not show non-top level packages after @ in completion
• KT-11295 “Convert string to template” intention: fix exception on certain code
• KT-10750, KT-11424 “Convert if to when” intention now detects effectively else branches in subsequent code and performs more accurate comment handling
• Configure Kotlin: show only changed files in the notification “Kotlin not configured”, restore all changed files in undo action
• KT-11556 Do not show “Kotlin not configured” for Kotlin JS projects
• KT-11593 Fix “Configure Kotlin” action for Gradle projects in IDEA 2016
• KT-11077 Use new built-in definition file format (.kotlin_builtins files)
• KT-5728 Remove closing curly brace in a string template when opening one is deleted
• KT-10883 “Explicit get or set call” quick fix: do not move caret too far away
• KT-5717 “Replace when with if”: do not lose comments
• KT-10797 “Replace with operator” intention is not available anymore for non-operator functions
• KT-11529 Highlighting range for unresolved annotation name does not include @ now
• KT-11178 Don‘t show “Change type arguments” fix when there’s nothing to change
• KT-11789 Don't interpret annotations inside Markdown code blocks as KDoc tags
• KT-11702 Fixed resolution of Kotlin beans with custom name
• KT-11689 Fixed exception on attempt to navigate to Kotlin file from Spring notification balloon
• KT-11725 Fixed renaming of injected SpEL references
• KT-11720 Fixed renaming of Kotlin beans through SpEL references
• KT-11719 Fixed renaming of Kotlin parameters references in XML files
• KT-11736 Fixed searching of Java usages for @JvmStatic properties and @JvmStatic @JvmOverloads functions
• KT-11862 Fixed bogus warnings about unresolved types in the Change Signature dialog
• Fix several issues leading to exceptions: KT-11579, KT-11580, KT-11777, KT-11868, KT-11845, KT-11486
• Fixed NoSuchFieldException in Kotlin module settings on IDEA Ultimate

Debugger

• KT-11705 “Smart step into” no longer skips methods from subclasses
• Debugger can now distinguish nested inline arguments
• KT-11326 Support private classes in Evaluate Expression
• KT-11455 Fix Evaluate Expression behavior for files with errors in sources
• KT-10670 Fix Evaluate Expression behavior for inline functions with default parameters
• KT-11380 Evaluate Expression now handles smart casts correctly
• KT-10148 Do not suggest methods from outer context in “Smart step into”
• Fix Evaluate Expression for expression created for array element
• Complete private members from libraries in Evaluate Expression
• KT-11578 Evaluate Expression: do not highlight completion variants from nullable receiver with grey
• KT-6805 Convert Java expression to Kotlin when opening Evaluate Expression from Variables view
• KT-11927 Fix “ambiguous import” error when invoking Evaluate Expression from Variables view for some field
• KT-11831 Fix Evaluate Expression for values of raw types
• Show error message when debug info for some local variable is corrupted
• Avoid 1s delay in completion in debugger fields if session is not stopped on a breakpoint
• Avoid cast to runtime type unavailable in current scope
• Fix text with line breaks in popup with line breakpoint variants
• Fix breakpoints inside inline functions in libraries sources
• Allow breakpoints at catch clause declaration
• KT-11848 Fix breakpoints inside generic crossinline lambda argument body
• KT-11932 Fix Step Over for while loop condition

Java to Kotlin converter

• Protected members used outside of inheritors are converted as public
• Support conversion for annotation constructor calls
• Place comments from the middle of the call to the end
• Drop line breaks between operator arguments (except +, -, && and ||)
• Add non-null assertions on call site for non-null parameters
• Specify type for variables with anonymous type if they have write accesses
• KT-11587 Fix conversion of static field accesses from other Java class
• KT-6800 Quote $ symbols in converted strings
• KT-11126 Convert annotations in annotations parameters correctly
• KT-11600 Do not produce unresolved toArray calls for Java Collection#toArray(T[])
• KT-11544 Fix conversion of uninitialized non-final field
• KT-10604 Fix conversion of scratch files
• KT-11543 Do not produce unnecessary casts of non-nullable expression to nullable type
• KT-11160 Fix IDE freeze

Android

• KT-7729 Add Android Lint checks for Kotlin (from Android Studio 1.5)
• KT-11487 Fixed sequential build with kapt and stubs enabled when Kotlin source file was modified and no Java source files were modified
• KT-11264 Action to create new activity in Kotlin
• KT-11201 Do not ignore items with similar names in kapt
• KT-11944 Rename Android Extensions imports when the layout file is renamed/deleted/added
• KT-10321 Do not upcast ViewStub to View
• KT-10841 Support @android:id/* IDs in Android Extensions

Maven

• KT-2917, KT-11261 Maven archetype for new Kotlin projects

Gradle

• KT-8487 Experimental support for incremental compilation with project property kotlin.incremental
• KT-11350 Fixed a bug causing Java rebuild when both Java and Kotlin are up-to-date
• KT-10507 Fix IllegalArgumentException “Missing extension point” on parallel builds
• KT-10932 Prevent compile tasks from running when nothing changes
• KT-11993 Fix NoSuchMethodError on access to internal members in production from tests (IDEA 2016+)

1.0.1-2

Compiler

• KT-11584, KT-11514 Correct comparison of Long! / Double! with integer constant
• KT-11590 SAM adapter for inline function corrected

1.0.1-1

Compiler

• KT-11468 More correct use-site / declaration-site variance combination handling
• KT-11478 “Couldn't inline method call” internal compiler error fixed

1.0.1

Compiler

Analysis & diagnostics issues fixed:

• KT-2277 Local function declarations are now checked for overload conflicts
• KT-3602 Special diagnostic is reported now on nullable ‘for’ range
• KT-10775 No compilation exception for empty when
• KT-10952 False deprecation warnings removed
• KT-10934 Type inference improved for whens
• KT-10902 Redeclaration is reported for top-level property vs classifier conflict
• KT-9985 Correct handling of safe call arguments in generic functions
• KT-10856 Diagnostic about projected out member is reported correctly on calls with smart cast receiver
• KT-5190 Calls of Java 8 Stream.collect
• KT-11109 Warning is reported on Strictfp annotation on a class because it's not supported yet
• KT-10686 Support generic constructors defined in Java
• KT-6958 Fixed resolution for overloaded functions with extension lambdas
• KT-10765 Correct handling of overload conflict between constructor and function in JPS
• KT-10752 If inferred type for an expression refers to a non-accessible Java class, it's a compiler error to prevent IAE in runtime
• KT-7415 Approximation of captured types in signatures
• KT-10913, KT-10186, KT-5198 False “unreachable code” fixed for various situations
• Minor: KT-3680, KT-9702, KT-8776, KT-6745, KT-10919, KT-9548

JVM code generation issues fixed:

• KT-11153 NoClassDefFoundError is fixed on primitive iterators during boxing optimization
• KT-7319 Correct parameter names for @JvmOverloads-generated methods
• KT-10425 Non-const values of member properties are not inlined now
• KT-11163 Correct calls of custom compareTo on primitives
• KT-11081 Reified type parameters are correctly stored in anonymous objects
• KT-11121 Generic properties generation is fixed for interfaces
• KT-11285, KT-10958 Special bridge generation refined
• KT-10313, KT-11190, KT-11192, KT-11130 Diagnostics and bytecode fixed for various operations with Long
• KT-11203, KT-11191, KT-11206, KT-8505, KT-11203 Handling of increment / decrement for collection elements with user-defined get / set fixed
• KT-9739 Backticked names with spaces are generated correctly

JS translator issues fixed:

• KT-7683, KT-11027 correct handling of in / !in inside when expressions

Standard library

• KT-10579 Improved performance of sum() and average() for arrays
• KT-10821 Improved performance of drop() / take() for sequences

Reflection

• KT-10840 Fix annotations on Java elements in reflection

IDE

New features:

• Compatibility with IDEA 2016
• Kotlin Education Plugin (for IDEA 2016)
• KT-9752 More usable file chooser for “Move declaration to another file”
• KT-9697 Move method to companion object and back
• KT-7443 Inspection + intention to replace assert (x != null) with “!!” or elvis

General issues fixed:

• KT-11277 Correct moving of Java classes from project view
• KT-11256 Navigate Declaration fixed for Java classes with @NotNull parameter in constructor
• KT-10553 A warning provided when Refactor / Move result is not compilable due to visibility problems
• KT-11039 Parameter names are now not missing in parameter info and completion for compiled java code used from kotlin
• KT-10204 Highlight usages in file is working now for function parameter
• KT-10954 Introduce Parameter (Ctrl+Alt+P) fixed when default value is a simple name reference
• KT-10776 Intentions: “Convert to lambda expression” works now for empty function body
• KT-10815 Generate equals() and hashCode() is no more suggested for interfaces
• KT-10818 “Initialize with constructor parameter” fixed
• KT-8876 “Convert member to extension” now removes modality modifiers (open / final)
• KT-10800 Create enum entry now adds comma after a new entry
• KT-10552 Pull Members Up now takes visibility conflicts into account
• KT-10978 Partially fixed, completion for JOOQ became ~ 10 times faster
• KT-10940 Reference search optimized for convention functions
• KT-9026 Editor no more locks up during scala file viewing
• KT-11142, KT-11276 Darkula scheme appearance corrected for Kotlin
• Minor: KT-10778, KT-10763, KT-10908, KT-10345, KT-10696, KT-11041, KT-9434, KT-8744, KT-9738, KT-10912

Configuration issues fixed:

• KT-11213 Kotlin plugin version corrected in build.gradle
• KT-10918 “Update Kotlin runtime” action does not try to update the runtime coming in from Gradle
• KT-11072 Libraries in maven, gradle and ide systems are never more detected as runtime libraries
• KT-10489 Configuration messages are aggregated into one notification
• KT-10831 Configure Kotlin in Project: “All modules containing Kotlin files” does not list modules not containing Kotlin files
• KT-10366 Gradle import: no fake “Configure Kotlin” notification on project creating

Debugger issues fixed:

• KT-10827 Fixed debugger stepping for inline calls
• KT-10780 Breakpoints in a lazy property work correctly
• KT-10634 Watches can now use private overloaded functions
• KT-10611 Line breakpoints now can be created inside lambda in init block
• KT-10673 Breakpoints inside lambda are no more ignored in presence of crossinline function parameter
• KT-11318 Stepping inside for each is optimized
• KT-3873 Editing code while standing on breakpoint is optimized
• KT-7261, KT-7266, KT-10672 Evaluate expression applicability corrected

Tools

• KT-7943, KT-10127 Overhead removed in Kotlin Gradle Plugin
• KT-11351 Fixed NoSuchMethodError with Gradle 2.12