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-9597 NullPointerException during resolution of complicated star projections
• 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