java.lang.Object
- org.objectweb.asm.ClassVisitor
- - org.codehaus.groovy.runtime.ProxyGeneratorAdapter

All Implemented Interfaces:

org.objectweb.asm.Opcodes
```
public class ProxyGeneratorAdapter
extends org.objectweb.asm.ClassVisitor
implements org.objectweb.asm.Opcodes
```
A proxy generator responsible for mapping a map of closures to a class implementing a list of interfaces. For example, the following code:
```
     abstract class Foo {
         abstract void bar();
         abstract void baz();
     }
     def dyn = [bar: { println 'hello' }, baz: { println 'world'}] as Foo
 
```
will generate a proxy class which extends class Foo and delegates method calls to the provided closures. The generated proxy implements the GroovyObject interface. Additionally, this proxy generator supports delegation to another object. In that case, if a method is defined both in the closure map and the delegate, the version from the map is preferred. This allows overriding methods from delegates with ease. Internally, the proxy generator makes use of ASM to generate bytecode, for improved performance as compared to the legacy proxy generation mechanism which made use of string templates.
Since:

2.0.0

Field Summary
- Fields inherited from class org.objectweb.asm.ClassVisitor
  api, cv
- 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_RECORD, 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, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, 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, V16, V17, V18, V19, V20, V21, V9

Constructor Summary

Constructors
Constructor	Description
`ProxyGeneratorAdapter(java.util.Map<java.lang.Object,java.lang.Object> closureMap, java.lang.Class superClass, java.lang.Class[] interfaces, java.lang.ClassLoader proxyLoader, boolean emptyBody, java.lang.Class delegateClass)`	Construct a proxy generator.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`GroovyObject`	`delegatingProxy(java.lang.Object delegate, java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs)`
`static Closure`	`ensureClosure(java.lang.Object o)`	Ensures that the provided object is wrapped into a closure if it's not a closure.
`protected org.objectweb.asm.MethodVisitor`	`makeDelegateCall(java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions, int accessFlags)`	Generate a call to the delegate object.
`protected org.objectweb.asm.MethodVisitor`	`makeDelegateToClosureCall(java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions, int accessFlags)`
`GroovyObject`	`proxy(java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs)`
`void`	`visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)`
`org.objectweb.asm.MethodVisitor`	`visitMethod(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions)`

Methods inherited from class org.objectweb.asm.ClassVisitor
getDelegate, visitAnnotation, visitAttribute, visitEnd, visitField, visitInnerClass, visitModule, visitNestHost, visitNestMember, visitOuterClass, visitPermittedSubclass, visitRecordComponent, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- ProxyGeneratorAdapter
```
public ProxyGeneratorAdapter(java.util.Map<java.lang.Object,java.lang.Object> closureMap,
                             java.lang.Class superClass,
                             java.lang.Class[] interfaces,
                             java.lang.ClassLoader proxyLoader,
                             boolean emptyBody,
                             java.lang.Class delegateClass)
```
  Construct a proxy generator. This generator is used when we need to create a proxy object for a class or an interface given a map of closures.
  
  Parameters:
  
  closureMap - the delegates implementations
  
  superClass - corresponding to the superclass class visitor
  
  interfaces - extra interfaces the proxy should implement
  
  proxyLoader - the class loader which should be used to load the generated proxy
  
  delegateClass - if not null, generate a delegate field with the corresponding class
  
  emptyBody - if set to true, the unimplemented abstract methods will receive an empty body instead of throwing an UnsupportedOperationException.

Method Detail

visit

public void visit(int version,
                  int access,
                  java.lang.String name,
                  java.lang.String signature,
                  java.lang.String superName,
                  java.lang.String[] interfaces)

Overrides:: visit in class org.objectweb.asm.ClassVisitor

visitMethod

public org.objectweb.asm.MethodVisitor visitMethod(int access,
                                                   java.lang.String name,
                                                   java.lang.String desc,
                                                   java.lang.String signature,
                                                   java.lang.String[] exceptions)

Overrides:: visitMethod in class org.objectweb.asm.ClassVisitor

makeDelegateCall

protected org.objectweb.asm.MethodVisitor makeDelegateCall(java.lang.String name,
                                                           java.lang.String desc,
                                                           java.lang.String signature,
                                                           java.lang.String[] exceptions,
                                                           int accessFlags)

Generate a call to the delegate object.

makeDelegateToClosureCall

protected org.objectweb.asm.MethodVisitor makeDelegateToClosureCall(java.lang.String name,
                                                                    java.lang.String desc,
                                                                    java.lang.String signature,
                                                                    java.lang.String[] exceptions,
                                                                    int accessFlags)

proxy

public GroovyObject proxy(java.util.Map<java.lang.Object,java.lang.Object> map,
                          java.lang.Object... constructorArgs)

delegatingProxy

public GroovyObject delegatingProxy(java.lang.Object delegate,
                                    java.util.Map<java.lang.Object,java.lang.Object> map,
                                    java.lang.Object... constructorArgs)

ensureClosure
```
public static Closure ensureClosure(java.lang.Object o)
```
Ensures that the provided object is wrapped into a closure if it's not a closure. Do not trust IDEs, this method is used in bytecode.

Class ProxyGeneratorAdapter

Field Summary

Fields inherited from class org.objectweb.asm.ClassVisitor

Fields inherited from interface org.objectweb.asm.Opcodes

Constructor Summary

Method Summary

Methods inherited from class org.objectweb.asm.ClassVisitor

Methods inherited from class java.lang.Object

Constructor Detail

ProxyGeneratorAdapter

Method Detail

visit

visitMethod

makeDelegateCall

makeDelegateToClosureCall

proxy

delegatingProxy

ensureClosure