org.codehaus.groovy.transform.trait

Class TraitASTTransformation

java.lang.Object

org.codehaus.groovy.transform.AbstractASTTransformation

org.codehaus.groovy.transform.trait.TraitASTTransformation

All Implemented Interfaces:

CompilationUnitAware, ASTTransformation, org.objectweb.asm.Opcodes

public class TraitASTTransformation
extends AbstractASTTransformation
implements CompilationUnitAware

Handles generation of code for the traits (trait keyword is equivalent to using the @Trait annotation). A class annotated with @Trait will generate, instead:

• an interface with the same name
• a utility inner class that will be used by the compiler to implement the trait
• potentially a utility inner class to assist with implementing trait fields

Author:

Cedric Champeau

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DO_DYNAMIC
static java.lang.String	POST_TYPECHECKING_REPLACEMENT

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, 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, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V9

Constructor Summary

Constructors

Constructor and Description
TraitASTTransformation()

Method Summary

Modifier and Type	Method and 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, checkNotInterface, copyAnnotatedNodeAnnotations, deemedInternalName, getClassList, getMemberClassValue, getMemberClassValue, getMemberIntValue, getMemberList, getMemberStringValue, getMemberStringValue, getMemberValue, hasAnnotation, init, memberHasValue, nonGeneric, shouldSkip, shouldSkipOnDescriptor, tokenize

Methods inherited from class java.lang.Object

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

Field Detail

DO_DYNAMIC

public static final java.lang.String DO_DYNAMIC

POST_TYPECHECKING_REPLACEMENT

public static final java.lang.String POST_TYPECHECKING_REPLACEMENT

Constructor Detail

TraitASTTransformation

public TraitASTTransformation()

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