Version History#

Vineflower 1.10.1#

Released on 2024-04-16 - GitHub

Vineflower 1.10.1 is a bugfix release for the 1.10 branch, fixing a handful of issues that had popped up over the past couple weeks. Thanks to all the contributors who submitted patches for this release!

Full Changelog:

Fixed switches on enums with a switch map along with null cases for java 21 (Thanks, coehlrich!)
Fixed NPE and IOOBE in generics remapping
Fixed an infinite loop bug with stack simplification
Fixed some cases of switch expressions not generating (Thanks, coehlrich!)
Fixed blank lines being emitted with empty argument lists (Thanks, jpenilla!)
Fixed inner class variable renaming bug with JAD var naming (Thanks, coehlrich!)
Fixed hanging newlines being emitted (Thanks, jpenilla!)
Fixed MethodParameter attribute being used even if names were empty (Thanks, shartte!)
Fixed output not being deterministic for inner classes (Thanks, jpenilla!)
Fixed J21 inner class fix not applying to nested inner classes

Please report any issues to https://github.com/Vineflower/vineflower/issues!

Vineflower 1.10.0#

Released on 2024-04-04 - GitHub

Vineflower 1.10.0 is the next major release of Vineflower, bringing a plugin interface to allow interfacing with the decompiler, a prototype Kotlin decompiler, major performance optimizations, and dozens of bugfixes and minor improvements. Thanks to everyone who contributed to this release!

Release highlights:

An extensible plugin system, allowing third parties to modify decompiled code without modifying the decompiler itself
The addition of a prototype Kotlin decompiler
Improvements around variable handling
Large amounts of fixes to generics handling
Siginifcant improvements to decompiler speed and memory usage

NOTE
This release contains two different jars. The "regular" jar, with no classifier, contains both the main decompiler and the three bundled plugins. The "slim" jar, with the "-slim" classifier, contains only the main decompiler itself. If confused, just get the regular jar as usual.

The full changelog is as follows:

Click here to expand the full changelog

Added plugin API
Added prototype Kotlin decompiler
Added support for using MethodParameters attribute when there is no LVT
Added text token API
Added clashing names analysis
Added support for 'Type[]::new' (Thanks, coehlrich!)
Added support for variable inlining with pattern matching instanceof (Thanks, coehlrich!)
Added more descriptive names for options
Added support to hide spurious fields in records if they are already record components
Added space between operators (e.g. 'while(...)' -> 'while (...)')
Improved help message
Improved identification of if-pattern matches
Improved standalone '++i' by changing to the more idomatic 'i++' (Thanks, TheKodeTode!)
Improved some cases of variables not getting inlined
Significantly improved generics handling
Moved variable renaming to a separate plugin
Fixed a crash with a for loop over a static iterator method
Fixed "Invalid constant type" issue
Fixed try-with-resources processor creating illegal code with custom exception catching
Fixed concurrent modification exception with certain jars
Fixed generation of casts to type ""
Fixed some cases of fields not getting inlined into usage sites
Fixed labels pointing to blocks that don't exist
Fixed object casts to boolean type
Fixed cases of "Could not properly define all variable types" errors
Fixed for unrepresentable types
Fixed casts on null types
Fixed rare crash with 'longType++'
Fixed some multithreading issues
Fixed improper nested annotation formatting
Fixed casting of arrays with different dimensions
Fixed lambdas losing generics information
Fixed bug with for loop generation not respecting final variables (Thanks, coehlrich!)
Fixed decompiler not considering lambdas when searching for local class placement (Thanks, MiniDigger!)
Fixed fields being inlined too eagerly
Fixed incorrect finally block parsing creating invalid code
Fixed string concat with chars becoming ints
Fixed imports to anonymous classes
Fixed for loop being created when incremented by an unknown value
Fixed bug where unused casts of invocations would get removed
Fixed boxing being removed for top-level expressions
Fixed Java 21 switch on enum
Fixed Java 21 inner classes
Optimized object allocation
Tons of smaller fixes not mentioned here

Please report any issues to https://github.com/Vineflower/vineflower/issues!

Vineflower 1.9.3#

Released on 2023-09-04 - GitHub

Vineflower 1.9.3 is a hotfix release, fixing two issues resulting in inconsistent decompiler output.
Full changelog:

Fixed inconsistent decompilation with floating point values
Fixed inconsistent decompilation with non-static inner classes

Please report any issues to https://github.com/Vineflower/vineflower/issues!

Vineflower 1.9.2#

Released on 2023-08-04 - GitHub

Vineflower 1.9.2 is a smaller release, focusing on fixing bugs and other inconveniences with the 1.9 branch.

Full changelog:

Added option to remap parameters with JAD names
Fixed inconsistent decompilation of pi constants
Fixed inconsistent decompilation of floating point constants
Fixed incorrect decompilation of exponent notation floating point numbers ending in 0
Fixed Try with resources being created incorrectly
Fixed spurious code deletion with specific switch expressions
Fixed JAD var naming not working or using conflicting names in some cases (thanks, coehlrich!)
Fixed clashing variable names with method parameters (thanks, MiniDigger!)
Fixed clashing variable names in foreach statements
Fixed clashing variable names in local classes
Fixed variables in finally blocks not getting remapped
Fixed crash during writing lambdas in rare cases

Please report any issues to https://github.com/Vineflower/vineflower/issues!

Vineflower 1.9.1#

Released on 2023-07-11 - GitHub

Vineflower 1.9.1 is a minor update, mainly focusing around the renaming from Quiltflower to Vineflower.

Full changelog:

Added deterministic jar artifacts (thanks kb1000!)
Renamed from Quiltflower to Vineflower (see The organization page for an explanation)

Please report any issues to https://github.com/Vineflower/vineflower/issues!

Quiltflower 1.9.0#

Released on 2022-10-28 - GitHub

Quiltflower 1.9.0 brings dozens of bug fixes, new features, improved decompilation, and an improved way to interact with the Quiltflower API.
NOTE: This version requires a minimum of Java 11 to run!

Some highlights include:

Improved switch pattern matching support
Changed default settings to improve code output by default
Fixed the "baby shark" bug (multiple nested infinite loops in a row)
Optimized memory, CPU, and disk usage

Please report any issues at https://github.com/QuiltMC/quiltflower/issues.
The full changelog for this version goes as follows:

Click here to expand the full changelog

Added support for transitive and static modifiers in module info (Thanks kb1000!)
Added improved support for switch pattern matching (Thanks Luna!)
Added implementation version to manifest (Thanks nbauma109!)
Added some support for constant dynamic resugaring
Added lazy loading for classpath jars (Thanks, zml!)
Added new option to verify variable merges
Added new option to decompile preview features
Added support for decompiling out of executables
Enabled try loop fix by default
Enabled ternary conditions by default
Improved API for developer usability (Thanks, zml!)
Improved marking of monitorenter and monitorexit opcodes when they aren't resugared properly
Improved resugaring of switch expressions over enums
Improved default values in switch expressions
Improved tracking of assignments in try blocks
Improved Pi value parentheses
Improved rename entities iteration order to be sequential based on classes seen
Improved bytecode to line mappings
Improved the experimental try loop fix to extend to try-finally blocks
Improved help message when running through the command line (thanks sschr!)
Renamed $FF: tags in decompiled code to $QF:
Rewrote ternary processing code and made it much more accurate
Optimized code for speed and memory usage
Optimized file reading and parsing
Updated help message
Fixed most cases of longstanding issue where multiple nested infinite loops would be created
Fixed "invalid constant type" issue with variable merging
Fixed many subtle issues with code generation due to improper internal state management
Fixed some invalid code generation with assignments in if statements
Fixed if pattern matching shadowing already defined variables
Fixed do-while loops not being created when they are the last statement inside of an outer loop
Fixed finally blocks inside of loops causing a crash
Fixed methods and fields not getting renamed by rename entities
Fixed bogus var10000 variables showing up in some cases
Fixed catch blocks being removed entirely
Fixed Object[] not being casted correctly
Fixed CME in loop creation
Fixed synchronized statements not decompiling correctly when the last statement is a throw
Fixed finally blocks in loops causing improper break statements
Fixed extra parenthesis around array accesses
Fixed extra casts being applied in method calls when not needed
Fixed foreach loops being created when the iteration variable is used earlier
Fixed improper loop generation when the loop is the first block
Fixed returns in loops when breaks make more sense, in loops where it's the first block
Fixed finally blocks in synchronized statements causing crashes
Fixed assignments becoming improper inside of try blocks
Fixed some cases where booleans and ints would merge together
Fixed more cases of int x = true;
Fixed an infinite loop OOM combo with finally processing
Fixed synchronized statements not decompiling correctly when in a loop
Fixed arrays being initialized with char values instead of number literals
Fixed some cases of switch expressions being created when they shouldn't be
Fixed empty newlines at the end of sequence statements
Fixed static fields showing up before enum fields
Fixed some rare label issues with breaks out of try statements
Fixed some extraneous generic casts on assignments
Fixed some generic union type casts being improper
Fixed rare concurrency issues causing crashes
Fixed toString not removed in string concat (thanks, thewindsofwinter!)
Fixed incorrect assignment exprent modification for assignments with a condition (Thanks Totty!)
Fixed class cast exception when creating a foreach over array with multiple dimensions
Fixed NullPointerException when writing some switch on string statements
Merged from upstream: Fixed an infinite loop while decompiling obfuscated code
Fixed NullPointerException when parsing enum method descriptors
Fixed casts not being applied on byte->int coercion
Fixed casts not being applied on Object parameters
Fixed a few casts with anonymous classes

Quiltflower 1.8.1#

Released on 2022-04-29 - GitHub

Fixed bug where decompiled output would sometimes not be saved
Added option to add linemapping metadata to jar entries (thanks jpenilla!)

Quiltflower 1.8.0#

Released on 2022-04-05 - GitHub

The changelog for this version is very long, so here are the highlights:

Improved the quality and cleanliness of the output
Many fixes to generics
Many fixes to loops
Dozens of bugs and crashes fixed

Click here to expand the full changelog

Added ++/-- inlining when possible
Added variable renaming when there's multiple variables with the same name
Added switch statement brace enclosing when the multiple variables are in different case branches
Added switch expression in assert support
Added Implementation-Name: Quiltflower to jar manifest (thanks jnp!)
Added formatting on complex if-else chains (thanks Earthcomputer!)
Added basic switch pattern matching support for preview versions
Changed some default options: generic signatures and synthetic members are now hidden by default, pattern matching is enabled, and ternary-in-if is disabled
Improved default branch hiding on switches when it's an empty fallthrough
Improved generic casts on ternaries
Improved generic casts on assigns
Improved ternary type inference when one branch is null
Improved detection of explicit generic invocations, such as Comparator.<...>comparing()
Improved variable merging in loops (improved variable liveness calculation)
Improved if-else statement structure to prevent highly nested if-else statements
Improved conversion of labeled continues to breaks to produce correct but cleaner code
Improved if statements with a single labeled sequence by lifting the label to the if statement, making it clearer what is being jumped to by the label
Improved the experimental try loop fix, now works better and doesn't break on random code
Improved the IResultSaver API (thanks zml!)
Improved pattern matching significantly
Improved string concat support, now supports makeConcat as well as makeConcatWithConstants
Improved infinite loop with return at the end condensing significantly better
Improved labeled break -> continue resugaring
Optimized excess memory usage
Fixed <unknown> variables in foreach loops
Fixed null being cast when it doesn't need to be
Fixed constructor invocations having extra parenthesis
Fixed switch expressions not having parenthesis around them when they should
Fixed instances where variables were cast twice
Fixed switch statements in finally blocks causing issues
Fixed synchronized statements having a null argument when object is being assigned to null
Fixed synchronized statements removing autoboxing
Fixed method()[i] += 0; not being properly inlined
Fixed copying files to directories not working properly
Fixed boxing issues with field initializers
Fixed rare crashes with inconsistent idom sequences
Fixed continues becoming implicit when they should be explicit
Fixed local classes not decompiling breaking entire file
Fixed double brace initializers in java 17 placing extra modifiers on the braces
Fixed some cases where stack variables created by the dup bytecode family were not simplified
Fixed swap based constructor invocations
Fixed cases where while loops were improperly created, moving a continue out of the loop
Fixed case when there are 2 pops after a jump (thanks Kroppeb!)
Fixed expression reordering in array initializes resulting in semantically different code (thanks Kroppeb!)
Fixed phantom continue or break at the end of a loop
Fixed statement graph ordering being incorrect in certain cases
Fixed IndexOutOfBounds in ternary processing
Fixed statement graph not discovering all nodes, leading to <unknown> variables
Fixed improper loop elimination when the loop was required to make the output correct
Fixed generics not casting on super keyword (contravariance)
Fixed open file systems not being closed (thanks CoolMineman!)
Fixed decompilation error with kotlin when enums (thanks Juuz!)

Quiltflower 1.7.0#

Released on 2021-12-07 - GitHub

Added switch expression support
Added decompiled code formatting (Thanks Earthcomputer!)
Added proper try-with-resource return support
Fixed try with resources statements inlining statements when it shouldn't
Added comments to decompiled code when there are oddities, such as finally blocks failing to inline
Added support for eclipse switch-on-enum
Added bytecode dumping on error (Thanks skyrising!)
Added exception dumping on error (Thanks skyrising!)
Added link to Quiltflower issue tracker on error
Added toggle for override annotation
Improved linemapping
Improved initializers not being inlined when they needed a static qualification in a lambda (Thanks skyrising!)
Fixed empty infinite loops composed of 2+ gotos failing to decompile
Fixed decompiling from the command line creating files instead of folders
Fixed created jars having extra folder entries saved as files
Fixed certain errors being able to cause classes to not be decompiled
Fixed classes in pre 1.0 java not being parsed
Fixed enums being marked as sealed (Thanks skyrising!)
Fixed recursive lambdas causing stackoverflow
Fixed references to inner classes in other classes breaking the entire method

Quiltflower 1.6.1#

Released on 2021-11-24 - GitHub

Fixes try with resources bugs
Adds override annotation preference
Improved linemapping
Optimized try with resources

Quiltflower 1.6.0#

Released on 2021-11-08 - GitHub

Added try with resources support
Added if pattern matching support
Added ternary in if statement and loop support
Added ternary constant simplification (Thanks MatrixX!)
Added bytecode and exception in errored methods
Added support for polymorphic methodhandles (Thanks skyrising!)
Added the "DOT_ERROR_EXPORT_DIR" option to dump graphs only in errored methods
Added local record and enum support (Thanks MatrixX!)
Added some warnings for when known invalid code was produced, such as synchronize over null
Added some explicit exceptions for some NPEs and IOOBEs
Added ability to use just the java runtime as a library instead of the entire classpath (Thanks skyrising!)
Added multiple new decompiler options
Improved some control flow around returns and exceptions
Fixed empty for loops being made when they were empty, now they're while loops
Fixed decompiling of default record methods
Fixed empty infinite loops not being decompiled
Fixed assignments in final fields being inlined when they shouldn't be
Fixed loops being while(true) when they were regular loops
Fixed rare crash where long was incorrectly typed
Fixed bug with casts and parenthesis
Fixed invalid zip file creation (Thanks Geolykt!)
Fixed IOOBE with sequence inlining
Fixed local classes with lvt capture crashing (Thanks MatrixX!)
Fixed some foreach loops with generics having a variable type of
Fixed rare NPE with default case in switch over string
Fixed private interface methods having default modifier
Fixed classes in default package having a leading dot
Fixed local classes being put in the wrong location (Thanks skyrising!)
Fixed fields with lambdas capturing the enclosing class being moved to static blocks (Thanks skyrising!)
Fixed some unboxing casts being removed with generic variables (Thanks skyrising!)
Fixed crash with array initializers in static blocks trying to be inlined
Optimized code (Thanks Kroppeb and skyrising!)

Quiltflower 1.5.0#

Released on 2021-06-15 - GitHub

Added override annotation support
Added more support for uninlining pi constants (Thanks Will BL!)
Improved handling of methods with same name and descriptor (Thanks skyrising!)
Improved performance of loading library code (Thanks skyrising!)
Fixed empty string concatenation
Fixed generic parameter crash
Fixed Objects.requireNonNull not being removed when they should be
Fixed chars being used for arithmetic operations and returns
Fixed compound assignments such as += and *= not being created
Fixed random crashes occurring during decompilation (#13)

Quiltflower 1.4.0#

Released on 2021-05-28 - GitHub

Merged ForgeFlower
Updated Upstream
Fixed multiple issues with decompilation