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com.google.gwt.core.ext
Class StubGeneratorContext

java.lang.Object
  extended by com.google.gwt.core.ext.StubGeneratorContext
All Implemented Interfaces:
GeneratorContext
public class StubGeneratorContext
extends java.lang.Object
implements GeneratorContext

An abstract generator context class which by default throws UnsupportedOperationException for all methods. Implementing classes can selectively override individual methods. Useful for mocking and/or selective reuse of generator functionality.

Constructor Summary
StubGeneratorContext()
           
 
Method Summary
 boolean checkRebindRuleAvailable(java.lang.String sourceTypeName)
          Checks whether a rebind rule is available for a given sourceTypeName, such as can appear in a replace-with or generate-with rule.
 void commit(TreeLogger logger, java.io.PrintWriter pw)
          Commits source generation begun with GeneratorContext.tryCreate(TreeLogger, String, String).
 void commitArtifact(TreeLogger logger, Artifact<?> artifact)
          Add an Artifact to the ArtifactSet that will be presented to the Linker chain at the end of the compilation cycle.
 GeneratedResource commitResource(TreeLogger logger, java.io.OutputStream os)
          Commits resource generation begun with GeneratorContext.tryCreateResource(TreeLogger, String).
 CachedGeneratorResult getCachedGeneratorResult()
          Get the cached rebind result that has been provided to the context, if available.
 PropertyOracle getPropertyOracle()
          Gets the property oracle for the current generator context.
 com.google.gwt.dev.resource.ResourceOracle getResourcesOracle()
          Returns a resource oracle containing all resources that are mapped into the module's source (or super-source) paths.
 TypeOracle getTypeOracle()
          Gets the type oracle for the current generator context.
 boolean isGeneratorResultCachingEnabled()
          Check whether generator result caching is currently enabled.
 boolean isProdMode()
          Returns true if generators are being run to produce code for a production compile.
 java.io.PrintWriter tryCreate(TreeLogger logger, java.lang.String packageName, java.lang.String simpleName)
          Attempts to get a PrintWriter so that the caller can generate the source code for the named type.
 java.io.OutputStream tryCreateResource(TreeLogger logger, java.lang.String partialPath)
          Attempts to get an OutputStream so that the caller can write file contents into the named file underneath the compilation output directory.
 boolean tryReuseTypeFromCache(java.lang.String typeName)
          Mark a type to be reused from the generator result cache, if available.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

StubGeneratorContext

public StubGeneratorContext()
Method Detail

checkRebindRuleAvailable

public boolean checkRebindRuleAvailable(java.lang.String sourceTypeName)
Description copied from interface: GeneratorContext
Checks whether a rebind rule is available for a given sourceTypeName, such as can appear in a replace-with or generate-with rule.

Specified by:
checkRebindRuleAvailable in interface GeneratorContext
Parameters:
sourceTypeName - the name of a type to check for rebind rule availability.
Returns:
true if a rebind rule is available

commit

public void commit(TreeLogger logger,
                   java.io.PrintWriter pw)
Description copied from interface: GeneratorContext
Commits source generation begun with GeneratorContext.tryCreate(TreeLogger, String, String).

Specified by:
commit in interface GeneratorContext

commitArtifact

public void commitArtifact(TreeLogger logger,
                           Artifact<?> artifact)
Description copied from interface: GeneratorContext
Add an Artifact to the ArtifactSet that will be presented to the Linker chain at the end of the compilation cycle. Custom sub-classes of Artifact can be used to write cooperating Generator and Linker combinations. This method is semantically equivalent to calling ArtifactSet.replace(Artifact) if an equivalent Artifact had previously been committed.

Specified by:
commitArtifact in interface GeneratorContext
Parameters:
logger - a logger; normally the logger passed into the currently invoked generator or a branch thereof
artifact - the Artifact to provide to the Linker chain.

commitResource

public GeneratedResource commitResource(TreeLogger logger,
                                        java.io.OutputStream os)
Description copied from interface: GeneratorContext
Commits resource generation begun with GeneratorContext.tryCreateResource(TreeLogger, String).

Specified by:
commitResource in interface GeneratorContext
Returns:
the GeneratedResource that was created as a result of committing the OutputStream.

getCachedGeneratorResult

public CachedGeneratorResult getCachedGeneratorResult()
Description copied from interface: GeneratorContext
Get the cached rebind result that has been provided to the context, if available. The provided result will be the most recent previously generated result for the currently active rebind rule and requested type name.

Specified by:
getCachedGeneratorResult in interface GeneratorContext
Returns:
A CachedGeneratorResult object, if one has been provided to the context. Null is returned if there is no previous result available.

getPropertyOracle

public PropertyOracle getPropertyOracle()
Description copied from interface: GeneratorContext
Gets the property oracle for the current generator context. Generators can use the property oracle to query deferred binding properties.

Specified by:
getPropertyOracle in interface GeneratorContext

getResourcesOracle

public com.google.gwt.dev.resource.ResourceOracle getResourcesOracle()
Description copied from interface: GeneratorContext
Returns a resource oracle containing all resources that are mapped into the module's source (or super-source) paths. Conceptually, this resource oracle exposes resources which are "siblings" to GWT-compatible Java classes. For example, if the module includes com.google.gwt.core.client as a source package, then a resource at com/google/gwt/core/client/Foo.properties would be exposed by this resource oracle.

Specified by:
getResourcesOracle in interface GeneratorContext

getTypeOracle

public TypeOracle getTypeOracle()
Description copied from interface: GeneratorContext
Gets the type oracle for the current generator context. Generators can use the type oracle to ask questions about the entire translatable code base.

Specified by:
getTypeOracle in interface GeneratorContext
Returns:
a TypeOracle over all the relevant translatable compilation units in the source path

isGeneratorResultCachingEnabled

public boolean isGeneratorResultCachingEnabled()
Description copied from interface: GeneratorContext
Check whether generator result caching is currently enabled.

Specified by:
isGeneratorResultCachingEnabled in interface GeneratorContext

isProdMode

public boolean isProdMode()
Description copied from interface: GeneratorContext
Returns true if generators are being run to produce code for a production compile. Returns false for dev mode. Generators can use this information to produce code optimized for the target.

Specified by:
isProdMode in interface GeneratorContext

tryCreate

public java.io.PrintWriter tryCreate(TreeLogger logger,
                                     java.lang.String packageName,
                                     java.lang.String simpleName)
Description copied from interface: GeneratorContext
Attempts to get a PrintWriter so that the caller can generate the source code for the named type. If the named types already exists, null is returned to indicate that no work needs to be done. The file is not committed until GeneratorContext.commit(TreeLogger, PrintWriter) is called.

Specified by:
tryCreate in interface GeneratorContext
Parameters:
logger - a logger; normally the logger passed into the currently invoked generator, or a branch thereof
packageName - the name of the package to which the create type belongs
simpleName - the unqualified source name of the type being generated
Returns:
null if the package and class already exists, otherwise a PrintWriter is returned.

tryCreateResource

public java.io.OutputStream tryCreateResource(TreeLogger logger,
                                              java.lang.String partialPath)
Description copied from interface: GeneratorContext
Attempts to get an OutputStream so that the caller can write file contents into the named file underneath the compilation output directory. The file is not committed until GeneratorContext.commitResource(TreeLogger, OutputStream) is called.

Specified by:
tryCreateResource in interface GeneratorContext
Parameters:
logger - a logger; normally the logger passed into the currently invoked generator, or a branch thereof
partialPath - the name of the file whose contents are to be written; the name can include subdirectories separated by forward slashes ('/')
Returns:
an OutputStream into which file contents can be written, or null if a resource by that name is already pending or already exists

tryReuseTypeFromCache

public boolean tryReuseTypeFromCache(java.lang.String typeName)
Description copied from interface: GeneratorContext
Mark a type to be reused from the generator result cache, if available. Calling this method with a successful response indicates that the calling generator will not re-generate this type. A cached version of this type will be added to the context once the calling generator returns from IncrementalGenerator.generateIncrementally(com.google.gwt.core.ext.TreeLogger, com.google.gwt.core.ext.GeneratorContext, java.lang.String), with a result containing RebindMode.USE_PARTIAL_CACHED.

Specified by:
tryReuseTypeFromCache in interface GeneratorContext
Parameters:
typeName - the fully qualified source name of a type.
Returns:
true if the requested type is available from the generator result cache, false otherwise.
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