org.codehaus.groovy.transform

## Class ASTTransformationVisitor

- java.lang.Object
- - org.codehaus.groovy.ast.CodeVisitorSupport
  - - org.codehaus.groovy.ast.ClassCodeVisitorSupport
    - - org.codehaus.groovy.transform.ASTTransformationVisitor

- All Implemented Interfaces:
    GroovyClassVisitor, GroovyCodeVisitor

      public final class ASTTransformationVisitor
      extends ClassCodeVisitorSupport

  This class handles the invocation of the ASTAnnotationTransformation when it is encountered by a tree walk. One instance of each exists for each phase of the compilation it applies to. Before invocation the

  `ASTTransformationCollectorCodeVisitor` will add a list of annotations that this visitor should be concerned about. All other annotations are ignored, whether or not they are GroovyASTTransformation annotated or not.

  A Two-pass method is used. First all candidate annotations are added to a list then the transformations are called on those collected annotations. This is done to avoid concurrent modification exceptions during the AST tree walk and allows the transformations to alter any portion of the AST tree. Hence annotations that are added in this phase will not be processed as transformations. They will only be handled in later phases (and then only if the type was in the AST prior to any AST transformations being run against it).

  Author:
    Danno Ferrin (shemnon)

- - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `addGlobalTransforms(ASTTransformationsContext context)`
    `static void` | `addGlobalTransformsAfterGrab(ASTTransformationsContext context)`
    `static void` | `addPhaseOperations(CompilationUnit compilationUnit)`
    `protected SourceUnit` | `getSourceUnit()`
    `void` | `visitAnnotations(AnnotatedNode node)` Adds the annotation to the internal target list if a match is found.
    `void` | `visitClass(ClassNode classNode)` Main loop entry.

    - ### Methods inherited from class org.codehaus.groovy.ast.ClassCodeVisitorSupport

      `addError, visitAssertStatement, visitBlockStatement, visitBreakStatement, visitCaseStatement, visitCatchStatement, visitClassCodeContainer, visitConstructor, visitConstructorOrMethod, visitContinueStatement, visitDeclarationExpression, visitDoWhileLoop, visitExpressionStatement, visitField, visitForLoop, visitIfElse, visitImports, visitMethod, visitObjectInitializerStatements, visitPackage, visitProperty, visitReturnStatement, visitStatement, visitSwitch, visitSynchronizedStatement, visitThrowStatement, visitTryCatchFinally, visitWhileLoop`

    - ### Methods inherited from class org.codehaus.groovy.ast.CodeVisitorSupport

      `visitArgumentlistExpression, visitArrayExpression, visitAttributeExpression, visitBinaryExpression, visitBitwiseNegationExpression, visitBooleanExpression, visitBytecodeExpression, visitCastExpression, visitClassExpression, visitClosureExpression, visitClosureListExpression, visitConstantExpression, visitConstructorCallExpression, visitEmptyStatement, visitFieldExpression, visitGStringExpression, visitListExpression, visitListOfExpressions, visitMapEntryExpression, visitMapExpression, visitMethodCallExpression, visitMethodPointerExpression, visitNotExpression, visitPostfixExpression, visitPrefixExpression, visitPropertyExpression, visitRangeExpression, visitShortTernaryExpression, visitSpreadExpression, visitSpreadMapExpression, visitStaticMethodCallExpression, visitTernaryExpression, visitTupleExpression, visitUnaryMinusExpression, visitUnaryPlusExpression, visitVariableExpression`

    - ### Methods inherited from class java.lang.Object

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

- - ### Method Detail

    - #### getSourceUnit

          protected SourceUnit getSourceUnit()

      Specified by:
        `getSourceUnit` in class `ClassCodeVisitorSupport`

    - #### visitClass

          public void visitClass(ClassNode classNode)

      Main loop entry.

      First, it delegates to the super visitClass so we can collect the relevant annotations in an AST tree walk.

      Second, it calls the visit method on the transformation for each relevant annotation found.

      Specified by:
        `visitClass` in interface `GroovyClassVisitor`
      Overrides:
        `visitClass` in class `ClassCodeVisitorSupport`
      Parameters:
        `classNode` - the class to visit

    - #### visitAnnotations

          public void visitAnnotations(AnnotatedNode node)

      Adds the annotation to the internal target list if a match is found.
      Overrides:
        `visitAnnotations` in class `ClassCodeVisitorSupport`
      Parameters:
        `node` - the node to be processed

    - #### addPhaseOperations

          public static void addPhaseOperations(CompilationUnit compilationUnit)

    - #### addGlobalTransformsAfterGrab

          public static void addGlobalTransformsAfterGrab(ASTTransformationsContext context)

    - #### addGlobalTransforms

          public static void addGlobalTransforms(ASTTransformationsContext context)