Package org.codehaus.groovy.runtime
Class ProxyGeneratorAdapter
java.lang.Object
org.objectweb.asm.ClassVisitor
org.codehaus.groovy.runtime.ProxyGeneratorAdapter
public class ProxyGeneratorAdapter
extends org.objectweb.asm.ClassVisitor
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
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Field SummaryFields inherited from class org.objectweb.asm.ClassVisitorapi, cv
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Constructor SummaryConstructorsConstructorDescriptionProxyGeneratorAdapter(Map<Object, Object> closureMap, Class superClass, Class[] interfaces, ClassLoader proxyLoader, boolean emptyBody, Class delegateClass) Construct a proxy generator.
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Method SummaryModifier and TypeMethodDescriptionstatic ClosureEnsures that the provided object is wrapped into a closure if it's not a closure.protected org.objectweb.asm.MethodVisitormakeDelegateCall(String name, String desc, String signature, String[] exceptions, int accessFlags) Generate a call to the delegate object.protected org.objectweb.asm.MethodVisitormakeDelegateToClosureCall(String name, String desc, String signature, String[] exceptions, int accessFlags) voidvisit(int version, int access, String name, String signature, String superName, String[] interfaces) org.objectweb.asm.MethodVisitorvisitMethod(int access, String name, String desc, String signature, String[] exceptions) Methods inherited from class org.objectweb.asm.ClassVisitorgetDelegate, visitAnnotation, visitAttribute, visitEnd, visitField, visitInnerClass, visitModule, visitNestHost, visitNestMember, visitOuterClass, visitPermittedSubclass, visitRecordComponent, visitSource, visitTypeAnnotation
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Constructor Details- 
ProxyGeneratorAdapterpublic ProxyGeneratorAdapter(Map<Object, Object> closureMap, Class superClass, Class[] interfaces, ClassLoader proxyLoader, boolean emptyBody, 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 Details- 
visitpublic void visit(int version, int access, String name, String signature, String superName, String[] interfaces) - Overrides:
- visitin class- org.objectweb.asm.ClassVisitor
 
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visitMethodpublic org.objectweb.asm.MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) - Overrides:
- visitMethodin class- org.objectweb.asm.ClassVisitor
 
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makeDelegateCallprotected org.objectweb.asm.MethodVisitor makeDelegateCall(String name, String desc, String signature, String[] exceptions, int accessFlags) Generate a call to the delegate object.
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makeDelegateToClosureCall
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proxy
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delegatingProxy
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ensureClosureEnsures 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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