proguard.optimize.gson

Class GsonOptimizer

java.lang.Object

proguard.optimize.gson.GsonOptimizer

public class GsonOptimizer
extends Object

This is the entry point for the GSON optimizations. The optimization roughly performs the following steps: - Find all usages of GSON in the program code: calls to toJson() or fromJson(). - Derive the domain classes that are involved in the GSON call, either directly (passed as argument to GSON) or indirectly (a field or element type of another domain class). - Inject optimized methods into the domain classes that serialize and deserialize the fields of the domain class without relying on reflection. - Inject and register GSON type adapters that utilize the optimized serialization and deserialization methods on the domain classes and bypass the reflective GSON implementation. As an additional protection measure, the JSON field names are assigned to a field index. The mapping between field indices and field names is done from the classes _OptimizedJsonReaderImpl and _OptimizedJsonWriterImpl, which have String encryption applied to them. This allows injecting serialization and deserialization code into the domain classes that have no JSON field names stored in them as plain text.

Author:

Lars Vandenbergh, Rob Coekaerts

Constructor Summary

Constructors

Constructor and Description
GsonOptimizer()

Method Summary

Modifier and Type	Method and Description
void	execute(ClassPool programClassPool, ClassPool libraryClassPool, MultiValueMap<String,String> injectedClassNameMap, Configuration configuration) Performs the Gson optimizations.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GsonOptimizer

public GsonOptimizer()

Method Detail

execute

public void execute(ClassPool programClassPool,
                    ClassPool libraryClassPool,
                    MultiValueMap<String,String> injectedClassNameMap,
                    Configuration configuration)
             throws IOException

Performs the Gson optimizations.

Parameters:

programClassPool - the program class pool on which to perform the Gson optimizations.

libraryClassPool - the library class pool used to look up library class references.

injectedClassNameMap - the map to which injected class names are added.

configuration - the DexGuard configuration that is applied.

Throws:

IOException - when the injected template classes can not be read.