Package: org.codehaus.groovy.control

## [Java] Class CompilationUnit

- org.codehaus.groovy.control.CompilationUnit

-     public class CompilationUnit
      extends ProcessingUnit

  The CompilationUnit collects all compilation data as it is generated by the compiler system. You can use this object to add additional source units to the compilation, or force the compilation to be run again (to affect only the deltas).

  You can also add PhaseOperations to this compilation using the addPhaseOperation method. This is commonly used when you want to wire a new AST Transformation into the compilation.

- - ### Nested Class Summary

    Nested classes
    Modifiers | Name | Description
    --- | --- | ---
    `interface` | `CompilationUnit.ClassgenCallback` | A callback interface you can use during the `classgen` phase of compilation as the compiler traverses the ClassNode tree.
    `static class` | `CompilationUnit.GroovyClassOperation` |
    `interface` | `CompilationUnit.IGroovyClassOperation` |
    `interface` | `CompilationUnit.IPrimaryClassNodeOperation` |
    `interface` | `CompilationUnit.ISourceUnitOperation` |
    `static class` | `CompilationUnit.PrimaryClassNodeOperation` |
    `interface` | `CompilationUnit.ProgressCallback` | A callback interface you can use to get a callback after every unit of the compile process.
    `static class` | `CompilationUnit.SourceUnitOperation` |

  - ### Field Summary

    Fields
    Modifiers | Name | Description
    --- | --- | ---
    `protected CompileUnit` | `ast` |
    `protected ASTTransformationsContext` | `astTransformationsContext` | The AST transformations state data.
    `protected ClassNodeResolver` | `classNodeResolver` |
    `protected CompilationUnit.ClassgenCallback` | `classgenCallback` | A callback called during the `classgen` phase of compilation
    `protected boolean` | `configured` | True after the first configure(CompilerConfiguration) operation.
    `protected boolean` | `debug` | If set, outputs a little more information during compilation when errors occur.
    `protected CompilationUnit.ProgressCallback` | `progressCallback` | A callback for use during compile()
    `protected Queue<SourceUnit>` | `queuedSources` |
    `protected ResolveVisitor` | `resolveVisitor` |
    `protected Map<String, SourceUnit>` | `sources` | The source units from which this unit is built.

  - Inherited fields
    Fields inherited from class | Fields
    --- | ---
    `class ProcessingUnit` | `classLoader, configuration, errorCollector, phase, phaseComplete`

  - ### Constructor Summary

    Constructors
    Constructor and description
    `CompilationUnit()` Initializes the CompilationUnit with defaults.
    `CompilationUnit(GroovyClassLoader loader)` Initializes the CompilationUnit with defaults except for class loader.
    `CompilationUnit(CompilerConfiguration configuration)` Initializes the CompilationUnit with no security considerations.
    `CompilationUnit(CompilerConfiguration configuration, CodeSource codeSource, GroovyClassLoader loader)` Initializes the CompilationUnit with a CodeSource for controlling security stuff and a class loader for loading classes.
    `CompilationUnit(CompilerConfiguration configuration, CodeSource codeSource, GroovyClassLoader loader, GroovyClassLoader transformLoader)` Initializes the CompilationUnit with a CodeSource for controlling security stuff, a class loader for loading classes, and a class loader for loading AST transformations.

  - ### Methods Summary

    Methods
    Type Params | Return Type | Name and description
    --- | --- | ---
    `` | `public void` | `addClassNode(ClassNode node)` Adds a ClassNode directly to the unit (ie. without source).
    `` | `public void` | `addFirstPhaseOperation(IPrimaryClassNodeOperation op, int phase)`
    `` | `public void` | `addFirstPhaseOperation(CompilationUnit.PrimaryClassNodeOperation op, int phase)`
    `` | `public void` | `addJavaCompilationUnits(Set<JavaFileObject> javaCompilationUnitSet)`
    `` | `public void` | `addNewPhaseOperation(ISourceUnitOperation op, int phase)`
    `` | `public void` | `addNewPhaseOperation(CompilationUnit.SourceUnitOperation op, int phase)`
    `` | `public void` | `addPhaseOperation(IGroovyClassOperation op)`
    `` | `public void` | `addPhaseOperation(ISourceUnitOperation op, int phase)`
    `` | `public void` | `addPhaseOperation(IPrimaryClassNodeOperation op, int phase)`
    `` | `public void` | `addPhaseOperation(CompilationUnit.GroovyClassOperation op)`
    `` | `public void` | `addPhaseOperation(CompilationUnit.SourceUnitOperation op, int phase)`
    `` | `public void` | `addPhaseOperation(CompilationUnit.PrimaryClassNodeOperation op, int phase)`
    `` | `public SourceUnit` | `addSource(File file)` Adds a source file to the unit.
    `` | `public SourceUnit` | `addSource(URL url)` Adds a source file to the unit.
    `` | `public SourceUnit` | `addSource(String name, InputStream stream)` Adds a InputStream source to the unit.
    `` | `public SourceUnit` | `addSource(String name, String scriptText)`
    `` | `public SourceUnit` | `addSource(SourceUnit source)` Adds a SourceUnit to the unit.
    `` | `public void` | `addSources(String[] paths)` Adds a set of file paths to the unit.
    `` | `public void` | `addSources(File[] files)` Adds a set of source files to the unit.
    `` | `public void` | `applyToPrimaryClassNodes(CompilationUnit.PrimaryClassNodeOperation op)`
    `` | `public void` | `applyToSourceUnits(CompilationUnit.SourceUnitOperation op)`
    `` | `public void` | `call(SourceUnit source, GeneratorContext context, ClassNode classNode)`
    `` | `public void` | `compile()` Synonym for `compile(Phases.ALL)`.
    `` | `public void` | `compile(int throughPhase)` Compiles the compilation unit from sources.
    `` | `public void` | `configure(CompilerConfiguration configuration)` Configures its debugging mode and classloader classpath from a given compiler configuration.
    `` | `protected org.objectweb.asm.ClassVisitor` | `createClassVisitor()`
    `` | `protected boolean` | `dequeued()` Dequeues any source units add through addSource and resets the compiler phase to initialization.
    `` | `public CompileUnit` | `getAST()` Returns the CompileUnit that roots our AST.
    `` | `public ASTTransformationsContext` | `getASTTransformationsContext()` Returns: the AST transformations current context
    `` | `public ClassNode` | `getClassNode(String name)` Convenience routine to get the named ClassNode.
    `` | `public ClassNodeResolver` | `getClassNodeResolver()`
    `` | `public List<GroovyClass>` | `getClasses()` Get the GroovyClasses generated by compile().
    `` | `public CompilationUnit.ClassgenCallback` | `getClassgenCallback()`
    `` | `protected String` | `getCommonSuperClass(String arg1, String arg2)`
    `` | `public ClassNode` | `getFirstClassNode()` Convenience routine to get the first ClassNode, for when you are sure there is only one.
    `` | `public Set<JavaFileObject>` | `getJavaCompilationUnitSet()`
    `` | `public CompilationUnit.ProgressCallback` | `getProgressCallback()`
    `` | `protected SourceUnit` | `getSourceUnit()`
    `` | `protected SourceUnit` | `getSourceUnit()`
    `` | `public GroovyClassLoader` | `getTransformLoader()` Returns the class loader for loading AST transformations.
    `` | `public boolean` | `hasNext()`
    `` | `public Iterator<SourceUnit>` | `iterator()` Returns an iterator on the unit's SourceUnits.
    `` | `protected void` | `mark()` Updates the phase marker on all sources.
    `` | `public boolean` | `needSortedInput()`
    `` | `public SourceUnit` | `next()`
    `` | `public void` | `remove()`
    `` | `public void` | `setClassNodeResolver(ClassNodeResolver classNodeResolver)`
    `` | `public void` | `setClassgenCallback(CompilationUnit.ClassgenCallback visitor)` Sets a ClassgenCallback.
    `` | `public void` | `setProgressCallback(CompilationUnit.ProgressCallback callback)` Sets a ProgressCallback.
    `` | `public Expression` | `transform(Expression expression)`

  - ### Inherited Methods Summary

    Inherited Methods
    Methods inherited from class | Name
    --- | ---
    `class ProcessingUnit` | `completePhase, configure, getClassLoader, getConfiguration, getErrorCollector, getPhase, getPhaseDescription, gotoPhase, isPhaseComplete, nextPhase, setClassLoader, setConfiguration`

- - ### Field Detail

    - #### protected CompileUnit ast

    - #### protected ASTTransformationsContext astTransformationsContext

      The AST transformations state data.

    - #### protected ClassNodeResolver classNodeResolver

    - #### protected CompilationUnit.ClassgenCallback classgenCallback

      A callback called during the `classgen` phase of compilation

    - #### protected boolean configured

      True after the first configure(CompilerConfiguration) operation.

    - #### protected boolean debug

      If set, outputs a little more information during compilation when errors occur.

    - #### protected CompilationUnit.ProgressCallback progressCallback

      A callback for use during compile()

    - #### protected Queue<SourceUnit> queuedSources

    - #### protected ResolveVisitor resolveVisitor

    - #### protected Map<String, SourceUnit> sources

      The source units from which this unit is built.

  - ### Constructor Detail

    - #### public CompilationUnit()

      Initializes the CompilationUnit with defaults.

    - #### public CompilationUnit(GroovyClassLoader loader)

      Initializes the CompilationUnit with defaults except for class loader.

    - #### public CompilationUnit(CompilerConfiguration configuration)

      Initializes the CompilationUnit with no security considerations.

    - #### public CompilationUnit(CompilerConfiguration configuration, CodeSource codeSource, GroovyClassLoader loader)

      Initializes the CompilationUnit with a CodeSource for controlling security stuff and a class loader for loading classes.

    - #### public CompilationUnit(CompilerConfiguration configuration, CodeSource codeSource, GroovyClassLoader loader, GroovyClassLoader transformLoader)

      Initializes the CompilationUnit with a CodeSource for controlling security stuff, a class loader for loading classes, and a class loader for loading AST transformations.

      Note: The transform loader must be able to load compiler classes. That means classLoader must be at last a parent to `transformLoader`. The other loader has no such constraint.

      Parameters:
        `transformLoader` - - the loader for transforms
        `loader` - - loader used to resolve classes against during compilation
        `codeSource` - - security setting for the compilation
        `configuration` - - compilation configuration

  - ### Method Detail

    - #### public void addClassNode(ClassNode node)

      Adds a ClassNode directly to the unit (ie. without source). WARNING: the source is needed for error reporting, using this method without setting a SourceUnit will cause NullPinterExceptions

    - #### public void addFirstPhaseOperation(IPrimaryClassNodeOperation op, int phase)

    - #### @Deprecated public void addFirstPhaseOperation(CompilationUnit.PrimaryClassNodeOperation op, int phase)

    - #### public void addJavaCompilationUnits(Set<JavaFileObject> javaCompilationUnitSet)

    - #### public void addNewPhaseOperation(ISourceUnitOperation op, int phase)

    - #### @Deprecated public void addNewPhaseOperation(CompilationUnit.SourceUnitOperation op, int phase)

    - #### public void addPhaseOperation(IGroovyClassOperation op)

    - #### public void addPhaseOperation(ISourceUnitOperation op, int phase)

    - #### public void addPhaseOperation(IPrimaryClassNodeOperation op, int phase)

    - #### @Deprecated public void addPhaseOperation(CompilationUnit.GroovyClassOperation op)

    - #### @Deprecated public void addPhaseOperation(CompilationUnit.SourceUnitOperation op, int phase)

    - #### @Deprecated public void addPhaseOperation(CompilationUnit.PrimaryClassNodeOperation op, int phase)

    - #### public SourceUnit addSource(File file)

      Adds a source file to the unit.

    - #### public SourceUnit addSource(URL url)

      Adds a source file to the unit.

    - #### public SourceUnit addSource(String name, InputStream stream)

      Adds a InputStream source to the unit.

    - #### public SourceUnit addSource(String name, String scriptText)

    - #### public SourceUnit addSource(SourceUnit source)

      Adds a SourceUnit to the unit.

    - #### public void addSources(String[] paths)

      Adds a set of file paths to the unit.

    - #### public void addSources(File[] files)

      Adds a set of source files to the unit.

    - #### @Deprecated public void applyToPrimaryClassNodes(CompilationUnit.PrimaryClassNodeOperation op)

    - #### @Deprecated public void applyToSourceUnits(CompilationUnit.SourceUnitOperation op)

    - #### @Override public void call(SourceUnit source, GeneratorContext context, ClassNode classNode)

    - #### public void compile()

      Synonym for `compile(Phases.ALL)`.

    - #### public void compile(int throughPhase)

      Compiles the compilation unit from sources.

    - #### @Override public void configure(CompilerConfiguration configuration)

      Configures its debugging mode and classloader classpath from a given compiler configuration. This cannot be done more than once due to limitations in URLClassLoader.

    - #### protected org.objectweb.asm.ClassVisitor createClassVisitor()

    - #### protected boolean dequeued()

      Dequeues any source units add through addSource and resets the compiler phase to initialization.

      Note: this does not mean a file is recompiled. If a SourceUnit has already passed a phase it is skipped until a higher phase is reached.

      throws:
        CompilationFailedException
      Returns:
        true if there was a queued source

    - #### public CompileUnit getAST()

      Returns the CompileUnit that roots our AST.

    - #### public ASTTransformationsContext getASTTransformationsContext()

      Returns:
        the AST transformations current context

    - #### public ClassNode getClassNode(String name)

      Convenience routine to get the named ClassNode.

    - #### public ClassNodeResolver getClassNodeResolver()

    - #### public List<GroovyClass> getClasses()

      Get the GroovyClasses generated by compile().

    - #### public CompilationUnit.ClassgenCallback getClassgenCallback()

    - #### @Override protected String getCommonSuperClass(String arg1, String arg2)

    - #### public ClassNode getFirstClassNode()

      Convenience routine to get the first ClassNode, for when you are sure there is only one.

    - #### public Set<JavaFileObject> getJavaCompilationUnitSet()

    - #### public CompilationUnit.ProgressCallback getProgressCallback()

    - #### @Override protected SourceUnit getSourceUnit()

    - #### public GroovyClassLoader getTransformLoader()

      Returns the class loader for loading AST transformations.

    - #### @Override public boolean hasNext()

    - #### public Iterator<SourceUnit> iterator()

      Returns an iterator on the unit's SourceUnits.

    - #### protected void mark()

      Updates the phase marker on all sources.

    - #### @Override public boolean needSortedInput()

    - #### @Override public SourceUnit next()

    - #### @Override public void remove()

    - #### public void setClassNodeResolver(ClassNodeResolver classNodeResolver)

    - #### public void setClassgenCallback(CompilationUnit.ClassgenCallback visitor)

      Sets a ClassgenCallback. You can have only one, and setting it to `null` removes any existing setting.

    - #### public void setProgressCallback(CompilationUnit.ProgressCallback callback)

      Sets a ProgressCallback. You can have only one, and setting it to `null` removes any existing setting.

    - #### @Override public Expression transform(Expression expression)