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---------------------------------------------------------------------------
Version 2.0.0, 2 May 2016
Inference:
* The infer-and-annotate.sh script infers annotations and inserts them in
your source code. This can reduce the burden of writing annotations and
let you get started using a type system more quickly. See the
"Whole-program inference" section in the manual for details.
Type systems:
* The Lock Checker has been replaced by a new implementation that provides
a stronger guarantee. The old Lock Checker prevented two threads from
simultaneously using a given variable, but race conditions were still
possible due to aliases. The new Lock Checker prevents two threads from
simultaneously dereferencing a given value, and thus prevents race
conditions. For details, see the "Lock Checker" chapter in the manual,
which has been rewritten to describe the new semantics.
* The top type qualifier for the Signature String type system has been
renamed from @UnannotatedString to @SignatureUnknown. You shouldn't
ever write this annotation, but if you perform separate compilation (for
instance, if you do type-checking with the Signature String Checker
against a library that is annotated with Signature String annotations),
then you need to re-compile the library.
* The IGJ, OIGJ, and Javari Checkers are no longer distributed with the
Checker Framework. If you wish to use them, install version 1.9.13 of
the Checker Framework. The implementations have been removed because
they were not being maintained. The type systems are valuable, but the
type-checkers should be rewritten from scratch.
Documentation improvements:
* New manual section "Tips for creating a checker" shows how to break down
the implementation of a type system into small, manageable pieces.
* Improved instructions for using Maven and Gradle, including for Android
code.
Tool changes:
* The Checker Framework Live Demo webpage lets you try the Checker
Framework without installing it: http://eisop.uwaterloo.ca/live/
* New command-line arguments -Acfgviz and -Averbosecfg enable better
debugging of the control-flow-graph generation step of type-checking.
* New command-line argument -Ainfer is used by the infer-and-annotate.sh
script that performs type inference.
Closed issues:
69, 86, 199, 299, 329, 421, 428, 557, 564, 573, 579, 665, 668, 669, 670, 671.
---------------------------------------------------------------------------
Version 1.9.13, 1 April 2016
Documentation:
* Clarified Maven documentation about use of annotations in comments.
* Added FAQ about annotating fully-qualified type names.
Closed issues: 438, 572, 579, 607, 624, 631.
---------------------------------------------------------------------------
Version 1.9.12, 1 March 2016
The Checker Framework distribution contains annotated versions
of libraries in directory checker-framework/checker/lib/.
During type-checking, you should put these versions first on your classpath,
to obtain more precise type-checking with fewer false positive warnings.
tools.jar is no longer required to be on the classpath when using
checker-qual.jar
The Signature String Checker supports two new string representations of a
Java type: @InternalForm and @ClassGetSimpleName.
The manual documents how to run a pluggable type-checker in IntelliJ IDEA.
The instructions on how to run a type-checker in Gradle have been updated to
use the artifacts in Maven Central. Examples using the instructions have been
added under checker-framework/checker/examples/GradleExamples/.
Renamed enum DefaultLocation to TypeUseLocation.
Closed issues: 130, 263, 345, 458, 559, 559, 574, 582, 596.
---------------------------------------------------------------------------
Version 1.9.11, 1 February 2016
Renamed and merged -AuseSafeDefaultsForUnannotatedSourceCode and
-AsafeDefaultsForUnannotatedBytecode command-line options to
-AuseDefaultsForUncheckedCode that takes arguments source and bytecode.
For type-system developers:
* The previously deprecated
org.checkerframework.framework.qual.TypeQualifier{s} annotations
were removed.
* Every type system uses the CLIMB-to-top defaulting scheme, unless it
explicitly specifies a different one. Previously a type system needed
to explicitly request CLIMB-to-top, but now it is the default.
Closed issues: 524, 563, 568.
---------------------------------------------------------------------------
Version 1.9.10, 4 January 2016
The Checker Framework distribution files now contain a version number:
for example, checker-framework-1.9.9.zip rather than checker-framework.zip.
Nullness Checker supports org.eclipse.jgit.annotations.Nullable and NonNull
annotations.
Buildfiles do less unnecessary recomputation.
Documentation:
* Documented how to initialize circular data structures in the
Initialization type system.
* Linked to David Bürgin's Nullness Checker tutorial at
https://github.com/glts/safer-spring-petclinic/wiki
* Acknowledged more contributors in the manual.
For type-system developers:
* The org.checkerframework.framework.qual.TypeQualifier{s} annotations are
now deprecated. To indicate which annotations a checker supports, see
http://types.cs.washington.edu/checker-framework/current/checker-framework-manual.html#indicating-supported-annotations .
Support for TypeQualifier{s} will be removed in the next release.
* Renamed
org.checkerframework.framework.qual.Default{,Qualifier}ForUnannotatedCode to
DefaultInUncheckedCodeFor and DefaultQualifierInHierarchyInUncheckedCode.
Closed issues: 169, 363, 448, 478, 496, 516, 529.
---------------------------------------------------------------------------
Version 1.9.9, 1 December 2015
Fixed issues: 511, 513, 514, 455, 527.
Removed the javac_maven script and batch file,
which had been previously deprecated.
---------------------------------------------------------------------------
Version 1.9.8, 9 November 2015
Field initialization warnings can now be suppressed for a single field at a
time, by placing @SuppressWarnings("initialization") on the field declaration.
Updated Maven instructions to no longer require a script.
Added an example of how to use the instructions under
checker/examples/MavenExample.
The javac_maven script (and batch file) are deprecated and will be
removed as of December 2015.
Fixed issues: 487, 500, 502.
---------------------------------------------------------------------------
Version 1.9.7, 24 October 2015
Fixed issues: 291, 474.
----------------------------------------------------------------------
Version 1.9.6, 8 October 2015
Fixed issue: 460.
----------------------------------------------------------------------
Version 1.9.5, 1 September 2015
Test Framework Updates:
* The test framework has been refactored to improve extensibility.
* Tests that previously extended ParameterizedCheckerTest or
CheckerTest should extend either CheckerFrameworkTest or nothing.
* If a test used methods that were previously found on
CheckerTest, you may find them in TestUtilities.
Fixed issues: 438, 457, 459.
----------------------------------------------------------------------
Version 1.9.4, 4 August 2015
Documented the notion of a compound checker, which depends on other checkers
and automatically runs them.
Renamed -AuseConservativeDefaultsForUnannotatedSourceCode command-line
option to -AuseSafeDefaultsForUnannotatedSourceCode
Moved the Checker Framework version control repository from Google Code to
GitHub, and from the Mercurial version control system to Git. If you have
cloned the old repository, then discard your old clone and create a new one
using this command:
git clone https://github.com/typetools/checker-framework.git
Fixed issues: 427, 429, 434, 442, 450.
----------------------------------------------------------------------
Version 1.9.3, 1 July 2015
New command-line options:
* -AsafeDefaultsForUnannotatedBytecode causes a checker to use conservative
defaults for .class files that were compiled without running the given
checker. Without this option, type-checking is unsound (that is, there
might be errors at run time even though the checker issues no warnings).
* -AuseConservativeDefaultsForUnannotatedSourceCode uses conservative
annotations for unannotated type uses. Use this when compiling a library in
which some but not all classes are annotated.
Various bug fixes and documentation improvements.
Fixed issues: 436.
----------------------------------------------------------------------
Version 1.9.2, 1 June 2015
Internationalization Format String Checker:
This new type-checker prevents use of incorrect internationalization
format strings.
Fixed issues: 434.
----------------------------------------------------------------------
Version 1.9.1, 1 May 2015
New FAQ entry:
"How does the Checker Framework compare with Eclipse's null analysis?"
----------------------------------------------------------------------
Version 1.9.0, 17 April 2015
Bug fixes for generics, especially type parameters:
* Manual chapter 21 "Generics and polymorphism" has been expanded,
and it gives more information on annotating type parameters.
* The qualifier on a type parameter (e.g. <@HERE T> ) only applies
to the lower bound of that type parameter. Previously it also
applied to the upper bound.
* Unannotated, unbounded wildcards are now qualified with the
annotations of the type parameter to which they are an argument.
See the new manual section 23.3.4 for more details.
* Warning "bound.type.incompatible" is issued if the lower bound of
a type parameter or wildcard is a supertype of its upper bound,
e.g. <@Nullable T extends @NonNull Object>
* Method type argument inference has been improved. Fewer warnings
should be issued when method invocations omit type arguments.
* Added command-line option -AprintVerboseGenerics to print more
information about type parameters and wildcards when they appear
in warning messages.
Reflection resolution:
If you supply the -AresolveReflection command-line option, the Checker
Framework attempts to resolve reflection. This reduces the number of
false positive warnings caused by reflection.
The documentation for the Map Key Checker has been moved into its own
chapter in the manual.
Fixed issues: 221, 241, 313, 314, 328, 335, 337, 338, 339, 355, 369,
376, 378, 386, 388, 389, 393, 403, 404, 413, 414, 415,
417, 418, 420, 421, 422, 426.
----------------------------------------------------------------------
Version 1.8.11, 2 March 2015
Fixed issues: 396, 400, 401.
----------------------------------------------------------------------
Version 1.8.10, 30 January 2015
Fixed issues: 37, 127, 350, 364, 365, 387, 392, 395.
----------------------------------------------------------------------
Version 1.8.9, 19 December 2014
Aliasing Checker:
This new type-checker ensures that an expression has no aliases.
Fixed issues: 362, 380, 382.
----------------------------------------------------------------------
Version 1.8.8, 26 November 2014
@SuppressWarnings("all") suppresses all Checker Framework warnings.
Implicit imports are deprecated, including the jsr308_imports environment
variable and the -jsr308_imports ... and -Djsr308.imports=... command-line
options.
For checkers bundled with the Checker Framework, package names may now
be omitted when running from the command line.
E.g.
javac -processor NullnessChecker MyFile.java
The Nullness checker supports Android annotations
android.support.annotation.NonNull and android.support.annotation.Nullable.
Fixed issues: 366, 379.
----------------------------------------------------------------------
Version 1.8.7, 30 October 2014
Fix performance regression introduced in release 1.8.6.
Nullness Checker:
* Updated Nullness annotations in the annotated JDK.
See issues: 336, 340, 374.
* String concatenations with null literals are now @NonNull
rather than @Nullable. See issue 357.
Fixed issues: 200, 300, 332, 336, 340, 357, 359, 373, 374.
----------------------------------------------------------------------
Version 1.8.6, 25 September 2014
Method Reference and Lambda Expression Support:
The Checker Framework now supports type-checking method references
and lambda expressions to ensure they are congruent with the
functional interface they are assigned to. The bodies of lambda expressions
are also now type-checked similarly to regular method bodies.
Dataflow:
* Handling of the following language features has been improved:
boxed Booleans, finally blocks, switch statements, type casts, enhanced
for loops
* Performance improvements
Annotations:
The checker-compat-qual.jar is now included with the Checker Framework
release. It can also be found in Maven Central at the coordinates:
org.checkerframework:checker-compat-qual
Annotations in checker-compat-qual.jar do not require Java 8 but
can only be placed in annotation locations valid in Java 7.
----------------------------------------------------------------------
Version 1.8.5, 29 August 2014
Eclipse Plugin:
All checkers in the Checker Framework manual now appear in the
Eclipse plugin by default. Users no longer have to include
checker.jar on their classpath to run any of the built-in checkers.
Improved Java 7 compatibility and introduced Java 7 compliant
annotations for the Nullness Checker. Please see the section on
"Class-file compatibility with Java 7" in the manual for more details.
Fixed issue 347.
----------------------------------------------------------------------
Version 1.8.4, 1 August 2014
The new Constant Value Checker is a constant propagation analysis: it
determines which variable values can be known at compile time.
Overriding methods now inherit declaration annotations from methods they
override, if the declaration annotation is meta-annotate with
@InheritedAnnotation. In particular, the purity annotations @SideEffectFree,
@Deterministic, and @Pure are inherited.
Command-line options:
* Renamed the -AenablePurity command-line flag to -AcheckPurityAnnotations.
* Added a command-line option -AoutputArgsToFile to output all command-line
options passed to the compiler to a file. This is especially useful when
debugging Maven compilation.
Annotations:
These changes are relevant only to people who wish to use pluggable
type-checking with a standard Java 7 toolset. (If you are not having
trouble with your Java 7 JVM, then you don't care about them.)
* Made clean-room reimplementations of nullness-related annotations
compatible with Java 7 JVMs, by removing TYPE_USE as a target.
* Added a new set of Java 7 compatibility annotations for the Nullness Checker
in the org.checkerframework.checker.nullness.compatqual package. These
annotations do not require Java 8 but can only be placed in annotation
locations valid in Java 7.
Java 8 support:
The Checker Framework no longer crashes when type-checking code with lambda
expressions, but it does issue a lambda.unsupported warning when
type-checking code containing lambda expressions. Full support for
type-checking lambda expressions will appear in a future release.
Fixed issue 343.
----------------------------------------------------------------------
Version 1.8.3, 1 July 2014
Updated the Initialization Checker section in the manual with
a new introduction paragraph.
Removed the Maven plugin section from the manual as the plugin is
no longer maintained and the final release was on June 2, 2014.
The javac_maven script (and batch file) are available to use
the Checker Framework from Maven.
Fixed issue 331.
----------------------------------------------------------------------
Version 1.8.2, 2 Jun 2014
Converted from using rt.jar to ct.sym for creating the annotated jdk.
Using the annotated jdk on the bootclasspath of a VM will cause the
vm to crash immediately.
The Lock Checker has been rewritten to support dataflow analysis.
It can now understand conditional expressions, for example, and
knows that "lock" is held in the body of statements like
"if (lock.tryLock()) { ... }"
The Lock Checker chapter in the manual has been updated accordingly
and describes the new Lock Checker features in detail.
Provided a javac_maven script (and batch file) to make it simpler
to use the Checker Framework from Maven. The Maven plug-in is deprecated
and will be removed as of July 1, 2014. Added an explanation of how
to use the script in the Maven section of the manual.
The Checker Framework installation instructions in the manual have
been updated.
Fixed issues: 312, 315, 316, 318, 319, 324, 326, 327.
----------------------------------------------------------------------
Version 1.8.1, 1 May 2014
Support to directly use the Java 8 javac in addition to jsr308-langtools.
Added checker/examples directory to checker-framework.zip.
New section in the manual describing the contents of checker-framework.zip.
Fixed issues: 204, 304, 320.
----------------------------------------------------------------------
Version 1.8.0, 2 April 2014
Added the GUI Effect Checker, which prevents "invalid thread access" errors
when a background thread in a GUI attempts to access the UI.
Changed the Java package of all type-checkers and qualifiers. The package
"checkers" has been renamed to "org.checkerframeork.checker". This
requires you to change your import statements, such as from
import checkers.nullness.quals.*;
to
import org.checkerframework.checker.nullness.qual.*;
It also requires you to change command-line invocations of javac, such as from
javac -processor checkers.nullness.NullnessChecker ...
to
javac -processor org.checkerframework.checker.nullness.NullnessChecker ...
Restructured the Checker Framework project and package layout,
using the org.checkerframework prefix.
----------------------------------------------------------------------
Version 1.7.5, 5 March 2014
Minor improvements to documentation and demos.
Support a few new units in the UnitsChecker.
----------------------------------------------------------------------
Version 1.7.4, 19 February 2014
Error messages now display the error key that can be used in
SuppressWarning annotations. Use -AshowSuppressWarningKeys to
show additional keys.
Defaulted type qualifiers are now stored in the Element and written
to the final bytecode.
Reduce special treatment of checkers.quals.Unqualified.
Fixed issues: 170, 240, 265, 281.
----------------------------------------------------------------------
Version 1.7.3, 4 February 2014
Fixes for Issues 210, 253, 280, 288.
Manual:
Improved discussion of checker guarantees.
Maven Plugin:
Added option useJavacOutput to display exact compiler output.
Eclipse Plugin:
Added the Format String Checker to the list of built-in checkers.
----------------------------------------------------------------------
Version 1.7.2, 2 January 2014
Fixed issues: 289, 292, 295, 296, 298.
----------------------------------------------------------------------
Version 1.7.1, 9 December 2013
Fixes for Issues 141, 145, 257, 261, 269, 267, 275, 278, 282, 283, 284, 285.
Implementation details:
Renamed AbstractBasicAnnotatedTypeFactory to GenericAnnotatedTypeFactory
----------------------------------------------------------------------
Version 1.7.0, 23 October 2013
Format String Checker:
This new type-checker ensures that format methods, such as
System.out.printf, are invoked with correct arguments.
Renamed the Basic Checker to the Subtyping Checker.
Reimplemented the dataflow analysis that performs flow-sensitive type
refinement. This fixes many bugs, improves precision, and adds features.
Many more Java expressions can be written as annotation arguments.
Initialization Checker:
This new abstract type-checker verifies initialization properties. It
needs to be combined with another type system whose proper initialization
should be checked. This is the new default initialzation checker for the
Nullness Checker. It is based on the "Freedom Before Commitment" approach.
Renamed method annotations used by the Nullness Checker:
@AssertNonNullAfter => @EnsuresNonNull
@NonNullOnEntry => @RequiresNonNull
@AssertNonNullIfTrue(...) => @IfMethodReturnsFalseEnsuresNonNull
@AssertNonNullIfFalse(...) => @IfMethodReturnsFalseEnsuresNonNull
@LazyNonNull => @MonotonicNonNull
@AssertParametersNonNull => [no replacement]
Removed annotations used by the Nullness Checker:
@AssertParametersNonNull
Renamed type annotations used by the Initialization Checker:
@NonRaw => @Initialized
@Raw => @UnknownInitialization
new annotation @UnderInitialization
The old Initialization Checker (that uses @Raw and @NonRaw) can be invoked
by invoking the NullnessRawnessChecker rather than the NullnessChecker.
Purity (side effect) analysis uses new annotations @SideEffectFree,
@Deterministic, and @TerminatesExecution; @Pure means both @SideEffectFree
and @Deterministic.
Pre- and postconditions about type qualifiers are available for any type system
through @RequiresQualifier, @EnsuresQualifier and @EnsuresQualifierIf. The
contract annotations for the Nullness Checker (e.g. @EnsuresNonNull) are now
only a special case of these general purpose annotations.
The meta-annotations @PreconditionAnnotation, @PostconditionAnnotation, and
@ConditionalPostconditionAnnotation can be used to create more special-case
annotations for other type systems.
Renamed assertion comment string used by all checkers:
@SuppressWarnings => @AssumeAssertion
To use an assert statement to suppress warnings, the assertion message must
include the string "@AssumeAssertion(warningkey)". Previously, just the
warning key sufficed, but the string @SuppressWarnings(warningkey) was
recommended.
New command-line options:
-AonlyDefs and -AonlyUses complement existing -AskipDefs and -AskipUses
-AsuppressWarnings Suppress warnings matching the given key
-AassumeSideEffectFree Unsoundly assume that every method is side-effect-free
-AignoreRawTypeArguments Ignore subtype tests for type arguments that
were inferred for a raw type
-AenablePurity Check the bodies of methods marked as pure
(@SideEffectFree or @Deterministic)
-AsuggestPureMethods Suggest methods that could be marked as pure
-AassumeAssertionsAreEnabled, -AassumeAssertionsAreDisabled Whether to
assume that assertions are enabled or disabled
-AconcurrentSemantics Whether to assume concurrent semantics
-Anocheckjdk Don't err if no annotated JDK can be found
-Aflowdotdir Create an image of the control flow graph
-AinvariantArrays replaces -Alint=arrays:invariant
-AcheckCastElementType replaces -Alint=cast:strict
Manual:
New manual section about array types.
New FAQ entries: "Which checker should I start with?", "How can I handle
typestate, or phases of my program with different data properties?",
"What is the meaning of a type qualifier at a class declaration?"
Reorganized FAQ chapter into sections.
Many other improvements.
----------------------------------------------------------------------
Version 1.6.7, 28 August 2013
User-visible framework improvements:
Improve the error message produced by -Adetailedmsgtext
Bug fixes:
Fix issue #245: anonymous classes were skipped by default
----------------------------------------------------------------------
Version 1.6.6, 01 August 2013
Documentation:
The Checker Framework manual has been improved. Changes include:
more troubleshooting tips to the Checker Framework manual, an improved discussion on qualifier bounds, more examples, improved formatting, and more.
An FAQ entry has been added to discuss JSR305.
Minor clarifications have been added to the Checker Framework tutorial.
----------------------------------------------------------------------
Version 1.6.5, 01 July 2013
User-visible framework improvements:
Stub files now support static imports.
Maven plugin:
Maven plugin will now issue a warning rather than quit when zero checkers are specified in a project's pom.xml.
Documentation:
Improved the Maven plugin instructions in the Checker Framework manual.
Added documentation for the -XDTA:noannotationsincomments compiler flag.
Internal framework improvements:
Improved Maven-plugin developer documentation.
----------------------------------------------------------------------
Version 1.6.4, 01 June 2013
User-visible framework improvements:
StubGenerator now generates stubs that can be read by the StubParser.
Maven plugin:
The Maven plugin no longer requires the Maven project's output directory to exist in order to run the Checker Framework. However, if you ask the Checker Framework to generate class files then the output directory will be created.
Documentation:
Improved the Maven plugin instructions in the Checker Framework manual.
Improved the discussion of why to define both a bottom and a top qualifier in the Checker Framework manual.
Update FAQ to discuss that some other tools incorrectly interpret array declarations.
----------------------------------------------------------------------
Version 1.6.3, 01 May 2013
Eclipse plugin bug fixes:
The javac argument files used by the Eclipse plugin now properly escape file paths. Windows users should no longer encounter errors about missing built-in checkers.
Documentation:
Add FAQ "What is the meaning of an annotation after a type?"
----------------------------------------------------------------------
Version 1.6.2, 04 Apr 2013
Eclipse plugin:
The "Additional compiler parameters" text field has now been replaced by a list. Parameters in this list may be activated/deactivated via checkbox.
Eclipse plugin bug fixes:
Classpaths and source files should now be correctly quoted when they contain spaces.
Internal framework improvements:
Update pom files to use the same update-version code as the Checker Framework "web" ant task. Remove pom specific update-version code.
Update build ant tasks to avoid re-running targets when executing tests from the release script.
----------------------------------------------------------------------
Version 1.6.1, 01 Mar 2013
User-visible framework improvements:
A number of error messages have been clarified.
Stub file now supports type annotations in front and after method type variable declarations.
You may now specify custom paths to javac.jar and jdk7.jar on the command line for non-standard installations.
Internal framework improvements:
Add shouldBeApplied method to avoid unnecessary scans in DefaultApplier and avoid annotating void types.
Add createQualifierDefaults and createQualifierPolymorphism factory methods.
Maven plugin:
Put Checker Framework jars at the beginning of classpath.
Added option to compile code in order to support checking for multi-module projects.
The plugin no longer copies the various Checker Framework maven artifacts to one location but instead takes advantage of the new custom path options for javac.jar and jdk7.jar.
The maven plugin no longer attempts to resolve jdk6.jar
Eclipse plugin:
Put Checker Framework jars at the beginning of classpath.
All files selected from a single project can now be checked. The previous behavior only checked the entire project or one file depending on the type of the first file selected.
Documentation:
Fixed broken links and incomplete URLs in the Checker Framework Manual.
Update FAQ to discuss that some other tools incorrectly interpret array declarations.
Bug fixes
----------------------------------------------------------------------
Version 1.6.0, 1 Feb 2013
User-visible framework improvements:
It is possible to use enum constants in stub files without requiring the fully qualified name, as was previously necessary.
Support build on a stock Java 8 OpenJDK.
Adapt to underlying jsr308-langtools changes.
The most visible change is syntax for fully-qualified types, from @A java.lang.Object to java.lang.@A Object.
JDK 7 is now required. The Checker Framework does not build or run on JDK 6.
Documentation:
A new tutorial is available at http://types.cs.washington.edu/checker-framework/tutorial/
----------------------------------------------------------------------
Version 1.5.0, 14 Jan 2013
User-visible framework improvements:
To invoke the Checker Framework, call the main method of class
CheckerMain, which is a drop-in replacement for javac. This replaces
all previous techniques for invoking the Checker Framework. Users
should no longer provide any Checker Framework jars on the classpath or
bootclasspath. jsr308-all.jar has been removed.
The Checker Framework now works with both JDK 6 and JDK 7, without need
for user customization. The Checker Framework determines the
appropriate annotated JDK to use.
All jar files now reside in checker-framework/checkers/binary/.
Maven plugin:
Individual pom files (and artifacts in the Maven repository) for all
Checker Framework jar files.
Avoid too-long command lines on Windows.
See the Maven section of the manual for more details.
Eclipse plugin:
Avoid too-long command lines on Windows.
Other bug fixes and interface improvements.
Other framework improvements:
New -Adetailedmsgtext command-line option, intended for use by IDE plugins.
----------------------------------------------------------------------
Version 1.4.4, 1 Dec 2012
Internal framework improvements:
Add shutdown hook mechanism and use it for -AresourceStats resource
statistics flag.
Add -AstubWarnIfNotFound and -AstubDebug options to improve
warnings and debug information from the stub file parsing.
Ignore case when comparing error suppression keys.
Support the bottom type as subtype of any wildcard type.
Tool Integration Changes
The Maven plugin id has been changed to reflect standard Maven
naming conventions.
Eclipse and Maven plugin version numbers will now
track the Checker Framework version numbers.
Bug fixes.
----------------------------------------------------------------------
Version 1.4.3, 1 Nov 2012
Clarify license:
The Checker Framework is licensed under the GPL2. More permissive
licenses apply to annotations, tool plugins (Maven, Eclipse),
external libraries included with the Checker Framework, and examples in
the Checker Framework Manual.
Replaced all third-party annotations by cleanroom implementations, to
avoid any potential problems or confusion with licensing.
Aliased annotations:
Clarified that there is no need to rewrite your program. The Checker
Framework recognizes dozens of annotations used by other tools.
Improved documentation of Units Checker and Gradle Integration.
Improved developer documentation of Eclipse and Maven plugins.
Bug fixes.
----------------------------------------------------------------------
Version 1.4.2, 16 Oct 2012
External tool support:
Eclipse plug-in now works properly, due to many fixes
Regex Checker:
New CheckedPatternSyntaxException added to RegexUtil
Support new foreign annotations:
org.eclipse.jdt.annotation.Nullable
org.eclipse.jdt.annotation.NonNull
New FAQ: "What is a receiver?"
Make annotations use 1-based numbering for formal parameters:
Previously, due to a bug the annotations used 0-based numbering.
This change means that you need to rewrite annotations in the following ways:
@KeyFor("#3") => @KeyFor("#4")
@AssertNonNullIfTrue("#0") => @AssertNonNullIfTrue("#1")
@AssertNonNullIfTrue({"#0", "#1"}) => @AssertNonNullIfTrue({"#1", "#2"})
@AssertNonNullAfter("get(#2)") => @AssertNonNullAfter("get(#3)")
This command:
find . -type f -print | xargs perl -pi -e 's/("#)([0-9])(")/$1.($2+1).$3/eg'
handles the first two cases, which account for most uses. You would need
to handle any annotations like the last two cases in a different way,
such as by running
grep -r -n -E '\("[^"]+#[0-9][^A-Za-z]|\("#[0-9][^"]' .
and making manual changes to the matching lines. (It is possible to
provide a command that handles all cases, but it would be more likely to
make undesired changes.)
Whenever making automated changes, it is wise to save a copy of your
codebase, then compare it to the modified version so you can undo any
undesired changes. Also, avoid running the automated command over version
control files such as your .hg, .git, .svn, or CVS directory.
----------------------------------------------------------------------
Version 1.4.1, 29 Sep 2012
User-visible framework improvements:
Support stub files contained in .jar files.
Support aliasing for declaration annotations.
Updated the Maven plugin.
Code refactoring:
Make AnnotationUtils and AnnotatedTypes into stateless utility classes.
Instead, provide the necessary parameters for particular methods.
Make class AnnotationBuilder independent of AnnotationUtils.
Remove the ProcessingEnvironment from AnnotatedTypeMirror, which was
hardly used and can be replaced easily.
Used more consistent naming for a few more fields.
Moved AnnotatedTypes from package checkers.types to checkers.utils.
this required making a few methods in AnnotatedTypeFactory public,
which might require changes in downstream code.
Internal framework improvements:
Fixed Issues 136, 139, 142, 156.
Bug fixes and documentation improvements.
----------------------------------------------------------------------
Version 1.4.0, 11 Sep 2012
User-visible framework improvements:
Defaulting:
@DefaultQualifier annotations now use a Class instead of a String,
preventing simple typo errors.
@DefaultLocation extended with more constants.
TreeAnnotator propagates the least-upper-bound of the operands of
binary/compound operations, instead of taking the default qualifier.
Stub files now ignore the return type, allowing for files automatically
generated from other formats.
Type factories and type hierarchies:
Simplify AnnotatedTypeFactory constructors.
Add a GeneralAnnotatedTypeFactory that supports multiple type systems.
Improvements to QualifierHierarchy construction.
Type-checking improvements:
Propagate annotations from the sub-expression of a cast to its result.
Better handling of assignment context and improved inference of
array creation expressions.
Optional stricter checking of casts to array and generic types using
the new -Alint=cast:strict flag.
This will become the default in the future.
Code reorganization:
SourceChecker.initChecker no longer has a ProcessingEnvironment
parameter. The environment can now be accessed using the standard
processingEnv field (instead of the previous env field).
Classes com.sun.source.util.AbstractTypeProcessor and
checkers.util.AggregateChecker are now in package checkers.source.
Move isAssignable from the BaseTypeChecker to the BaseTypeVisitor; now
the Checker only consists of factories and logic is contained in the
Visitor.
Warning and error messages:
Issue a warning if an unsupported -Alint option is provided.
Improved error messages.
Maven plugin now works.
Nullness Checker:
Only allow creation of (implicitly) non-null objects.
Optionally forbid creation of arrays with @NonNull component type,
when flag -Alint=arrays:forbidnonnullcomponents is supplied.
This will become the default in the future.
Internal framework improvements:
Enable assertion checking.
Improve handling of annotated type variables.
Assignment context is now a type, not a tree.
Fix all compiler warnings.
----------------------------------------------------------------------
Version 1.3.1, 21 Jul 2012
Installation:
Clarify installation instructions for Windows. Remove javac.bat, which
worked for running distributed checkers but not for creating new checkers.
User-visible framework improvements:
Implement @PolyAll qualifier to vary over multiple type systems.
The Checker Framework is unsound due to Java's covariant array subtyping.
You can enable invariant array subtyping (for qualifiers only, not for
base Java types) with the command-line option -Alint=arrays:invariant.
This will become the default in the future.
Internal framework improvements:
Improve defaulting for multiple qualifier hierarchies.
Big refactoring of how qualifier hierarchies are built up.
Improvements to error handling output for unexpected exceptions.
Bug fixes and documentation improvements.
----------------------------------------------------------------------
Version 1.3.0, 3 Jul 2012
Annotation syntax changes, as mandated by the latest Type Annotations
(JSR 308) specification. The most important ones are:
- New receiver syntax, using "this" as a formal parameter name:
ReturnType methodname(@ReceiverAnnotation MyClass this, ...) { ... }
- Changed @Target default to be the Java 1.5 values
- UW extension: in addition to annotations in comments, support
special /*>>> */ comments to hide multiple tokens.
This is useful for the new receiver syntax and for import statements.
Framework improvements:
Adapt to annotation storage changes in jsr308-langtools 1.3.0.
Move type validation methods from the BaseTypeChecker to BaseTypeVisitor.
----------------------------------------------------------------------
Version 1.2.7, 14 May 2012
Regex Checker:
Add basic support for the concatenation of two non-regular expressions
that produce a valid regular expression.
Support "isRegex" in flow inference.
Framework improvements:
New @StubFiles annotation declaratively adds stub files to a checker.
Internal bug fixes:
Respect skipDefs and skipUses in NullnessFlow.
Support package annotations in stub files.
Better support for enums in annotation attributes.
Cleanups to how implicit receivers are determined.
----------------------------------------------------------------------
Version 1.2.6, 18 Mar 2012
Nullness Checker:
Correctly handle unboxing in more contexts (if, switch (Issue 129),
while loops, ...)
Regex Checker:
Add capturing groups parameter to Regex qualifier.
Count groups in String literals and String concatenation.
Verify group number to method calls that take a capturing group
number.
Update RegexUtil methods to take optional groups parameter.
Modify regex qualifier hierarchy to support groups parameter.
Add special case for Pattern.compile when called with Pattern.LITERAL flag.
Internal bug fixes:
Improve flow's support of annotations with parameters.
Fix generics corner cases (Issues 131, 132, 133, 135).
Support type annotations in annotations and type-check annotations.
Improve reflective look-up of visitors and factories.
Small cleanups.
----------------------------------------------------------------------
Version 1.2.5.1, 06 Feb 2012
Nullness Checker:
Correct the annotations on ThreadLocal and InheritableThreadLocal.
Internal bug fixes:
Expand release tests.
Compile release with JDK 6 to work on both JDK 6 and JDK 7.
----------------------------------------------------------------------
Version 1.2.5, 3 Feb 2012
Don't put classpath on the bootclasspath when invoking javac. This
prevents problems if, for example, android.jar is on the classpath.
New -jsr308_imports ... and -Djsr308.imports=... command-line options, for
specifying implicit imports from the command line. This is needed by Maven.
New -Aignorejdkastub option makes the checker not load the jdk.astub
file. Files from the "stubs" option are still loaded.
Regex Checker:
Support concatenation of PolyRegex strings.