Package org.codehaus.groovy.transform

## Class LogASTTransformation

- java.lang.Object
- - org.codehaus.groovy.transform.AbstractASTTransformation
  - - org.codehaus.groovy.transform.LogASTTransformation

- All Implemented Interfaces:
    `CompilationUnitAware`, `ASTTransformation`, `ErrorCollecting`, `org.objectweb.asm.Opcodes`

      public class LogASTTransformation
      extends AbstractASTTransformation
      implements CompilationUnitAware

  This class provides an AST Transformation to add a log field to a class.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `LogASTTransformation.AbstractLoggingStrategy` |
    `static interface` | `LogASTTransformation.LoggingStrategy` | A LoggingStrategy defines how to wire a new logger instance into an existing class.

  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static String` | `DEFAULT_CATEGORY_NAME` | This is just a dummy value used because String annotations values can not be null.

    - ### Fields inherited from class org.codehaus.groovy.transform.AbstractASTTransformation

      `RETENTION_CLASSNODE, sourceUnit`

    - ### Fields inherited from interface org.objectweb.asm.Opcodes

      `AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, ASM6, ASM7, ASM8_EXPERIMENTAL, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V9`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `LogASTTransformation()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `setCompilationUnit​(CompilationUnit unit)` |
    `void` | `visit​(ASTNode[] nodes, SourceUnit source)` | The method is invoked when an AST Transformation is active.

    - ### Methods inherited from class org.codehaus.groovy.transform.AbstractASTTransformation

      `addError, checkIncludeExclude, checkIncludeExclude, checkIncludeExcludeUndefinedAware, checkIncludeExcludeUndefinedAware, checkNotInterface, checkPropertyList, checkPropertyList, checkPropertyList, copyAnnotatedNodeAnnotations, copyAnnotatedNodeAnnotations, deemedInternalName, getAnnotationName, getClassList, getMemberClassList, getMemberClassValue, getMemberClassValue, getMemberIntValue, getMemberList, getMemberStringList, getMemberStringValue, getMemberStringValue, getMemberValue, hasAnnotation, init, memberHasValue, nonGeneric, shouldSkip, shouldSkip, shouldSkipOnDescriptor, shouldSkipOnDescriptorUndefinedAware, shouldSkipUndefinedAware, shouldSkipUndefinedAware, tokenize`

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

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

- - ### Field Detail

    - #### DEFAULT_CATEGORY_NAME

          public static final String DEFAULT_CATEGORY_NAME

      This is just a dummy value used because String annotations values can not be null. It will be replaced by the fully qualified class name of the annotated class.
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### LogASTTransformation

          public LogASTTransformation()

  - ### Method Detail

    - #### visit

          public void visit​(ASTNode[] nodes,
                            SourceUnit source)

      Description copied from interface: `ASTTransformation`
      The method is invoked when an AST Transformation is active. For local transformations, it is invoked once each time the local annotation is encountered. For global transformations, it is invoked once for every source unit, which is typically a source file.
      Specified by:
        `visit` in interface `ASTTransformation`
      Parameters:
        `nodes` - The ASTnodes when the call was triggered. Element 0 is the AnnotationNode that triggered this annotation to be activated. Element 1 is the AnnotatedNode decorated, such as a MethodNode or ClassNode. For global transformations it is usually safe to ignore this parameter.
        `source` - The source unit being compiled. The source unit may contain several classes. For global transformations, information about the AST can be retrieved from this object.

    - #### setCompilationUnit

          public void setCompilationUnit​(CompilationUnit unit)

      Specified by:
        `setCompilationUnit` in interface `CompilationUnitAware`