Package spoon.compiler

Interface Environment

All Known Implementing Classes:
StandardEnvironment
public interface Environment
This interface represents the environment in which Spoon is launched - accessible through Factory.getEnvironment(). Its primary use is to report messages, warnings, and errors.

  • Method Details

    • getComplianceLevel

      int getComplianceLevel()
      Gets the Java version compliance level.
      Returns:
      the compliance level

    • setComplianceLevel

      void setComplianceLevel​(int level)
      Sets the Java version compliance level.
      Parameters:
      level - the compliance level

    • isPreviewFeaturesEnabled

      boolean isPreviewFeaturesEnabled()
      Returns true if preview language features are enabled.
      Returns:
      true iff preview features are enabled

    • setPreviewFeaturesEnabled

      void setPreviewFeaturesEnabled​(boolean enabled)
      Set to true to enable latest preview language features. Note: compliance level should be set to the latest.
      Parameters:
      enabled - whether to enable preview features

    • getPrettyPrintingMode

      Environment.PRETTY_PRINTING_MODE getPrettyPrintingMode()
      Get the current pretty-printing mode. most robust: Environment.PRETTY_PRINTING_MODE.DEBUG most sophisticated: Environment.PRETTY_PRINTING_MODE.AUTOIMPORT
      Returns:
      the kind of pretty-printing expected.

    • setPrettyPrintingMode

      void setPrettyPrintingMode​(Environment.PRETTY_PRINTING_MODE prettyPrintingMode)

    • debugMessage

      void debugMessage​(String message)
      Logs a debug message
      Parameters:
      message - a message to write to the debug log

    • getDefaultFileGenerator

      FileGenerator<? extends CtElement> getDefaultFileGenerator()
      Returns the default file generator for this environment (gives the default output directory for the created files).
      Returns:
      the default file generator

    • getManager

      ProcessingManager getManager()
      Gets the processing manager.
      Returns:
      the current processing manager

    • getProcessorProperties

      ProcessorProperties getProcessorProperties​(String processorName)
      Returns the properties for a given processor.
      Parameters:
      processorName - fully qualified name of a processor
      Returns:
      properties for the processor, or null if there is no processor by that name

    • setProcessorProperties

      void setProcessorProperties​(String processorName, ProcessorProperties prop)
      Sets the properties for a given processor.
      Parameters:
      processorName - fully qualified name of the processor
      prop - properties to set

    • isAutoImports

      boolean isAutoImports()
      Returns true if we let Spoon handle imports and turn fully qualified type names int simply qualified names.
      Returns:
      true iff Spoon is set to automatically import types and simplify type names

    • isProcessingStopped

      boolean isProcessingStopped()
      Tells if the processing is stopped, generally because one of the processors called setProcessingStopped(boolean) after reporting an error.
      Returns:
      true iff processing has been forcibly aborted

    • report

      void report​(Processor<?> processor, Level level, CtElement element, String message)
      Helper method called by a processor to report an error, warning or message as dictated by the severity parameter. Note that this does not stop the processing or any remaining task. To do so, use setProcessingStopped(boolean).
      Parameters:
      processor - The processor that report this message. Can be null.
      level - The level of the report
      element - The CtElement to which the report is associated
      message - The message to report

    • report

      void report​(Processor<?> processor, Level level, String message)
      This method should be called to print out a message during the processing.
      Parameters:
      processor - The processor that report this message. Can be null.
      level - The level of the report
      message - The message to report

    • reportEnd

      void reportEnd()
      This method should be called to report the end of the processing.

    • reportProgressMessage

      void reportProgressMessage​(String message)
      This method should be called to print out a progress message during the processing. On contrary to regular messages, progress messages are not meant to remain in the message logs and just indicate to the user some task progression information.
      Parameters:
      message - a message to print

    • setDefaultFileGenerator

      void setDefaultFileGenerator​(FileGenerator<? extends CtElement> generator)
      Sets the default file generator for this environment.
      Parameters:
      generator - a file generator to set as the default

    • setManager

      void setManager​(ProcessingManager manager)
      Sets the processing manager of this environment.
      Parameters:
      manager - a processing manager to set as the default

    • setProcessingStopped

      void setProcessingStopped​(boolean processingStopped)
      This method can be called to stop the processing and all the remaining tasks. In general, a processor calls it after reporting a fatal error.
      Parameters:
      processingStopped - if true, any ongoing processing is aborted as soon as possible and future processing is prohibited

    • getTabulationSize

      int getTabulationSize()
      Gets the size of the tabulations in the generated source code.
      Returns:
      the current tabulation size

    • setTabulationSize

      void setTabulationSize​(int size)
      Sets the size of the tabulations in the generated source code.
      Parameters:
      size - tabulation size to set

    • isUsingTabulations

      boolean isUsingTabulations()
      Tells if Spoon uses tabulations in the source code.
      Returns:
      true iff Spoon uses tabulations when pretty-printing

    • useTabulations

      void useTabulations​(boolean b)
      Sets Spoon to use tabulations in the source code.
      Parameters:
      b - whether Spoon should use tabulations when pretty-printing

    • setAutoImports

      void setAutoImports​(boolean autoImports)
      Tell to the Java printer to automatically generate imports and use simple names instead of fully-qualified name.
      Parameters:
      autoImports - whether Spoon should auto-import types and simplify names

    • getErrorCount

      int getErrorCount()
      Gets the error count from building, processing, and compiling within this environment.
      Returns:
      the amount of errors that have occurred

    • getWarningCount

      int getWarningCount()
      Gets the warning count from building, processing, and compiling within this environment.
      Returns:
      the amount of warnings that have occurred

    • getInputClassLoader

      ClassLoader getInputClassLoader()
      Returns the ClassLoader which is used by JDT and to resolve classes from references. By default, returns a class loader able to load classes from the Spoon-specific class path set with setSourceClasspath(String[])
      Returns:
      the currently configured classloader

    • setInputClassLoader

      void setInputClassLoader​(ClassLoader classLoader)
      Sets a specific classloader for JDT and reference resolution
      Parameters:
      classLoader - a classloader to set

    • setPreserveLineNumbers

      void setPreserveLineNumbers​(boolean preserveLineNumbers)
      When set, the generated source code will try to generate code that preserves the line numbers of the original source code. This option may lead to difficult-to-read indentation and formatting.
      Parameters:
      preserveLineNumbers - whether Spoon should attempt to preserve line numbers when pretty-printing

    • isPreserveLineNumbers

      boolean isPreserveLineNumbers()
      Tells if the source generator will try to preserve the original line numbers.
      Returns:
      true iff Spoon attempts to preserve line numbers of elements when pretty-printing

    • getSourceClasspath

      String[] getSourceClasspath()
      Returns the source class path of the Spoon model. This class path is used when the SpoonCompiler is building the model and also to find external classes, referenced from within the model.
      Returns:
      all paths in the classpath

    • setSourceClasspath

      void setSourceClasspath​(String[] sourceClasspath)
      Sets the source class path of the Spoon model. After the class path is set, it can be retrieved by getSourceClasspath(). Only .jar files or directories with *.class files are accepted. The *.jar or *.java files contained in given directories are ignored.
      Parameters:
      sourceClasspath - classpath to set
      Throws:
      InvalidClassPathException - if a given classpath does not exists or does not have the right format (.jar file or directory)

    • setNoClasspath

      void setNoClasspath​(boolean option)
      Sets the option "noclasspath", use with caution (see explanation below). With this option, Spoon does not require the full classpath to build the model. In this case, all references to classes that are not in the classpath are handled with the reference mechanism. The "simplename" of the reference object refers to the unbound identifier. This option facilitates the use of Spoon when is is hard to have the complete and correct classpath, for example for mining software repositories. For writing analyses, this option works well if you don't cross the reference by a call to getDeclaration() (if you really want to do so, then check for nullness of the result before). In normal mode, compilation errors are signaled as exception, with this option enabled they are signaled as message only. The reason is that in most cases, there are necessarily errors related to the missing classpath elements.
      Parameters:
      option - whether to set Spoon to noclasspath mode

    • getNoClasspath

      boolean getNoClasspath()
      Returns the value ot the option noclasspath
      Returns:
      true iff Spoon is currently in noclasspath mode

    • setIgnoreSyntaxErrors

      void setIgnoreSyntaxErrors​(boolean ignoreSyntaxErrors)
      Sets the option ignore-syntax-errors to remove files with any syntax errors or JLS violations from the compilation batch. Also while transformations no checks for JLS correctness are reported as error.
      Parameters:
      ignoreSyntaxErrors - whether Spoon should ignore files with any syntax errors or JLS violations

    • getIgnoreSyntaxErrors

      boolean getIgnoreSyntaxErrors()
      Returns the value ot the option ignore-syntax-errors.
      Returns:
      true iff Spoon ignores files with any syntax errors, JLS violations or reports JLS correctness problems as exception.

    • isCopyResources

      boolean isCopyResources()
      Returns the value of the option copy-resources.
      Returns:
      true iff Spoon should copy resource files from the project when pretty-printing

    • setCopyResources

      void setCopyResources​(boolean copyResources)
      Sets the option copy-resources to copy all resources in a project on the folder destination.
      Parameters:
      copyResources - whether Spoon should copy resources

    • isCommentsEnabled

      boolean isCommentsEnabled()
      Returns the value of the option enable-comments.
      Returns:
      true iff Spoon respects comments in source code

    • setCommentEnabled

      void setCommentEnabled​(boolean commentEnabled)
      Sets the option enable-comments to parse comments of the target project.
      Parameters:
      commentEnabled - whether Spoon should respect comments in source code

    • getLevel

      Level getLevel()
      Gets the level of loggers asked by the user.
      Returns:
      the current logging level

    • setLevel

      void setLevel​(String level)
      Sets the level of loggers asked by the user.
      Parameters:
      level - the logging level to set, see Level for options

    • shouldCompile

      boolean shouldCompile()
      Checks if we want compile the target source code and get their binary.
      Returns:
      true iff Spoon should compile target source code

    • setShouldCompile

      void setShouldCompile​(boolean shouldCompile)
      Sets the compile argument.
      Parameters:
      shouldCompile - whether Spoon should compile target source code

    • checksAreSkipped

      boolean checksAreSkipped()
      Tells whether Spoon does no checks at all. - parents are consistent (see AstParentConsistencyChecker) - hashcode violation (see CtElementImpl.equals(Object)) - method violation (see CtType.addMethod(CtMethod)) are active or not. By default all checks are enabled and checksAreSkipped() return false.
      Returns:
      true iff Spoon skips consistency checks

    • disableConsistencyChecks

      void disableConsistencyChecks()
      Disable all consistency checks on the AST. Dangerous! The only valid usage of this is to keep full backward-compatibility.

    • setBinaryOutputDirectory

      void setBinaryOutputDirectory​(String directory)
      Set the directory where binary .class files are created
      Parameters:
      directory - path to set for the binary output directory

    • getBinaryOutputDirectory

      String getBinaryOutputDirectory()
      Get the directory where binary .class files are created
      Returns:
      path to the binary output directory

    • setSourceOutputDirectory

      void setSourceOutputDirectory​(File directory)
      Sets the directory where source files are written
      Parameters:
      directory - path to set for the source output directory

    • getSourceOutputDirectory

      File getSourceOutputDirectory()
      Returns the directory where source files are written
      Returns:
      path to the source output directory

    • setOutputDestinationHandler

      void setOutputDestinationHandler​(OutputDestinationHandler outputDestinationHandler)
      Set the output destination that handles where source files are written
      Parameters:
      outputDestinationHandler - handler for determining where to write source files

    • getOutputDestinationHandler

      OutputDestinationHandler getOutputDestinationHandler()
      Returns the output destination that handles where source files are written
      Returns:
      the current output destination handler

    • getModelChangeListener

      FineModelChangeListener getModelChangeListener()
      get the model change listener that is used to follow the change of the AST.
      Returns:
      the current change listener

    • setModelChangeListener

      void setModelChangeListener​(FineModelChangeListener modelChangeListener)
      Set the model change listener
      Parameters:
      modelChangeListener - change listener to set

    • getEncoding

      Charset getEncoding()
      Get the encoding used inside the project
      Returns:
      encoding used in the project

    • getEncodingProvider

      EncodingProvider getEncodingProvider()
      Get encoding provider, which is used to detect encoding for each file separately
      Returns:
      the current encoding provider

    • setEncoding

      void setEncoding​(Charset encoding)
      Set the encoding to use for parsing source code
      Parameters:
      encoding - the character set to use for source file encoding

    • setEncodingProvider

      void setEncodingProvider​(EncodingProvider encodingProvider)
      Set encoding provider, which is used to detect encoding for each file separately
      Parameters:
      encodingProvider - the encoding provider to set

    • setOutputType

      void setOutputType​(OutputType outputType)
      Set the output type used for processing files
      Parameters:
      outputType - output type to use when pretty-printing

    • getOutputType

      OutputType getOutputType()
      Get the output type
      Returns:
      the current output type

    • getSpoonProgress

      SpoonProgress getSpoonProgress()
      Get the spoonProgress logger. This method mustn't return null.
      Returns:
      the spoonProgress

    • setSpoonProgress

      void setSpoonProgress​(SpoonProgress spoonProgress)

    • getCompressionType

      CompressionType getCompressionType()
      Get the type of serialization to be used by default
      Returns:
      the current type of serialization

    • setCompressionType

      void setCompressionType​(CompressionType serializationType)
      Set the type of serialization to be used by default
      Parameters:
      serializationType - the type of serialization to set

    • createPrettyPrinter

      PrettyPrinter createPrettyPrinter()
      Creates the default pretty-printer.
      Returns:
      new instance of PrettyPrinter which is configured for this environment

    • createPrettyPrinterAutoImport

      PrettyPrinter createPrettyPrinterAutoImport()
      Creates a pretty-printer that automatically imports used types and turns fully qualified type names into simply qualified names. This is roughly equivalent to setting setAutoImports(boolean) to true and then invokin createPrettyPrinter(), except that the environment is not modified.
      Returns:
      new instance of PrettyPrinter which prints nice code

    • setPrettyPrinterCreator

      void setPrettyPrinterCreator​(Supplier<PrettyPrinter> creator)
      Sets a custom pretty-printer that overrides the default pretty-printer. Can for example be used to create a SniperJavaPrettyPrinter for enabling the sniper mode. env.setPrettyPrinterCreator(() -> new SniperJavaPrettyPrinter(env));
      Parameters:
      creator - a Supplier, which creates new instance of pretty printer.

    • isIgnoreDuplicateDeclarations

      boolean isIgnoreDuplicateDeclarations()
      Whether Spoon currently ignores duplicate declarations of types.
      Returns:
      true if spoon is allowed to create a model of a project that contains multiple copies of the same class

    • setIgnoreDuplicateDeclarations

      void setIgnoreDuplicateDeclarations​(boolean ignoreDuplicateDeclarations)
      Set Spoon to ignore duplicate type declarations in a project. Setting this option to true causes Spoon to attempt to build a model even when the same qualified name appears for multiple types. This mode of operation makes Spoon less stable as duplicated types do not make sense in Java, and causes strange behavior in the underlying JDT compiler. Type resolution can become unpredictable as the order in which types are parsed becomes a determining factor in which duplicated type actually makes it into the model.
      Parameters:
      ignoreDuplicateDeclarations - (default false) set to true to allow spoon to create a model of a project that contains multiple times the same class