Package org.codehaus.groovy.runtime
Class ProxyGeneratorAdapter
- java.lang.Object
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- org.objectweb.asm.ClassVisitor
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- org.codehaus.groovy.runtime.ProxyGeneratorAdapter
 
 
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- All Implemented Interfaces:
- org.objectweb.asm.Opcodes
 
 public class ProxyGeneratorAdapter extends org.objectweb.asm.ClassVisitor implements org.objectweb.asm.OpcodesA 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 Foowill generate a proxy class which extends class Foo and delegates method calls to the provided closures. The generated proxy implements theGroovyObjectinterface. 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
 
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Field Summary- 
Fields inherited from interface org.objectweb.asm.OpcodesAALOAD, 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
 
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Constructor SummaryConstructors 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.
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Method SummaryAll Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description GroovyObjectdelegatingProxy(java.lang.Object delegate, java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs)static ClosureensureClosure(java.lang.Object o)Ensures that the provided object is wrapped into a closure if it's not a closure.protected org.objectweb.asm.MethodVisitormakeDelegateCall(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.MethodVisitormakeDelegateToClosureCall(java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions, int accessFlags)GroovyObjectproxy(java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs)voidvisit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)org.objectweb.asm.MethodVisitorvisitMethod(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions)
 
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Constructor Detail- 
ProxyGeneratorAdapterpublic 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.
 
 
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Method Detail- 
visitpublic void visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)- Overrides:
- visitin class- org.objectweb.asm.ClassVisitor
 
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visitMethodpublic org.objectweb.asm.MethodVisitor visitMethod(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions)- Overrides:
- visitMethodin class- org.objectweb.asm.ClassVisitor
 
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makeDelegateCallprotected 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.
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makeDelegateToClosureCallprotected org.objectweb.asm.MethodVisitor makeDelegateToClosureCall(java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions, int accessFlags)
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proxypublic GroovyObject proxy(java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs) 
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delegatingProxypublic GroovyObject delegatingProxy(java.lang.Object delegate, java.util.Map<java.lang.Object,java.lang.Object> map, java.lang.Object... constructorArgs) 
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ensureClosurepublic 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.
 
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