# Interface: com.pnfsoftware.jeb.core.units.code.android.ir.IDOptimizer Plugin interface for `dexdec` \(DEX decompiler\) IR optimizer plugins. They are used to optimize a method's IR or a collection of methods IRs. Implementors should not implement this interface directly: extend [AbstractDOptimizer](AbstractDOptimizer) instead. ## Static Field: DEOBFUSCATOR Type: `java.lang.String` Constant value: `deobfuscator` Description: A well\-known optimizer tag used to indicate that an optimizer is categorized as an explicit deobfuscator. ## Static Field: INLINER Type: `java.lang.String` Constant value: `inliner` Description: A well\-known optimizer tag used to indicate that an optimizer inlines method invocations. ## Static Field: REORDERER Type: `java.lang.String` Constant value: `reorderer` Description: A well\-known optimizer tag indicating that this optimizer, as part of its work, reorders the graph's nodes into a more natural way, better suitable for AST generation. That process is also called "layouting". Note that such optimizers may report no\-optimizations performed but still have reordered the graph. ## Static Field: SLOW Type: `java.lang.String` Constant value: `slow` Description: A well\-known optimizer tag used to indicate that an optimizer is likely to perform slowly on large graphs. ## Method: getName - return type: `java.lang.String` Description: Retrieve the plugin name. Should be consistent with the value returned by `getPluginInformation().getName()`. return: optimizer name ## Method: getPriority - return type: `double` Description: Get the optimizer priority. A higher value means a higher priority. Priorities are used by [optimizer orchestrators](IDMasterOptimizer) to determine in which order optimizers should be executed. return: the default priority ## Method: getTags - return type: `java.util.Set` Description: Get the optimizer tags. An optimizer may have 0, 1, or more tags. A tag is a non\-null, non\-empty string. return: a collection of tags; may be empty \(tags are optional\), but never null ## Method: getType - return type: `com.pnfsoftware.jeb.core.units.code.android.ir.DOptimizerType` Description: Get the optimizer type. Types are used by [optimizer orchestrators](IDMasterOptimizer) to determine whether an optimizer should run. return: optimizer type ## Method: isCollectionOptimizer - return type: `boolean` Description: Determine whether this optimizer performs on a single method or an a collection of methods. return: true for collection optimizers, false for single\-method optimizers ## Method: isEnabled - return type: `boolean` Description: Determine whether the optimizer is enabled or not. This method is used by [optimizer orchestrators](IDMasterOptimizer) to determine whether an optimizer can be scheduled for execution. return: true if this optimizer is enabled ## Method: perform - parameter: `ctx`, type: `com.pnfsoftware.jeb.core.units.code.android.ir.IDMethodContext` - return type: `int` Description: Run the optimizer on the provided target method. For this method to be called by an [orchestrator](IDMasterOptimizer), [#isCollectionOptimizer()](#isCollectionOptimizer()) must return `false`. parameter: ctx: a method context return: number of optimizations performed ## Method: performOnCollection - parameter: `ctxlist`, type: `java.util.List` - parameter: `pmcntmap`, type: `java.util.Map` - return type: `int` Description: Run the optimizer on the provided collection of methods. For this method to be called by an [orchestrator](IDMasterOptimizer), [#isCollectionOptimizer()](#isCollectionOptimizer()) must return `true`. parameter: ctxlist: a collection of method contexts parameter: pmcntmap: optional output map that will receive the per\-method optimization counts return: number of optimizations performed