public class ProxyGeneratorAdapter
extends org.objectweb.asm.ClassVisitor
implements org.objectweb.asm.Opcodes
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.
Additionaly, 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.AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, 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| Constructor and Description |
|---|
ProxyGeneratorAdapter(Map<Object,Object> closureMap,
Class superClass,
Class[] interfaces,
ClassLoader proxyLoader,
boolean emptyBody,
Class delegateClass)
Construct a proxy generator.
|
| Modifier and Type | Method and Description |
|---|---|
GroovyObject |
delegatingProxy(Object delegate,
Map<Object,Object> map,
Object... constructorArgs) |
static Closure |
ensureClosure(Object o)
Ensures that the provided object is wrapped into a closure if it's not
a closure.
|
protected org.objectweb.asm.MethodVisitor |
makeDelegateCall(String name,
String desc,
String signature,
String[] exceptions,
int accessFlags)
Generate a call to the delegate object.
|
protected org.objectweb.asm.MethodVisitor |
makeDelegateToClosureCall(String name,
String desc,
String signature,
String[] exceptions,
int accessFlags) |
GroovyObject |
proxy(Map<Object,Object> map,
Object... constructorArgs) |
void |
visit(int version,
int access,
String name,
String signature,
String superName,
String[] interfaces) |
org.objectweb.asm.MethodVisitor |
visitMethod(int access,
String name,
String desc,
String signature,
String[] exceptions) |
public ProxyGeneratorAdapter(Map<Object,Object> closureMap, Class superClass, Class[] interfaces, ClassLoader proxyLoader, boolean emptyBody, Class delegateClass)
closureMap - the delegates implementationssuperClass - corresponding to the superclass class visitorinterfaces - extra interfaces the proxy should implementproxyLoader - the class loader which should be used to load the generated proxydelegateClass - if not null, generate a delegate field with the corresponding classemptyBody - if set to true, the unimplemented abstract methods will receive an empty body instead of
throwing an UnsupportedOperationException.public void visit(int version,
int access,
String name,
String signature,
String superName,
String[] interfaces)
visit in class org.objectweb.asm.ClassVisitorpublic org.objectweb.asm.MethodVisitor visitMethod(int access,
String name,
String desc,
String signature,
String[] exceptions)
visitMethod in class org.objectweb.asm.ClassVisitorprotected org.objectweb.asm.MethodVisitor makeDelegateCall(String name, String desc, String signature, String[] exceptions, int accessFlags)
protected org.objectweb.asm.MethodVisitor makeDelegateToClosureCall(String name, String desc, String signature, String[] exceptions, int accessFlags)
public GroovyObject proxy(Map<Object,Object> map, Object... constructorArgs)
public GroovyObject delegatingProxy(Object delegate, Map<Object,Object> map, Object... constructorArgs)