|
1
54 package org.logicalcobwebs.cglib.proxy;
55
56 import java.lang.reflect.Method  ;
57 import java.util.*;
58 import org.logicalcobwebs.cglib.core.*;
59 import org.logicalcobwebs.asm.ClassVisitor;
60 import org.logicalcobwebs.asm.Type;
61
62
66 class MixinEmitter extends ClassEmitter {
67 private static final String FIELD_NAME = "CGLIB$DELEGATES";
68 private static final Signature CSTRUCT_OBJECT_ARRAY =
69 TypeUtils.parseConstructor("Object[]");
70 private static final Signature NEW_INSTANCE =
71 TypeUtils.parseSignature("org.logicalcobwebs.cglib.proxy.Mixin newInstance(Object[])");
72 private static final Type MIXIN =
73 TypeUtils.parseType("org.logicalcobwebs.cglib.proxy.Mixin");
74
75 public MixinEmitter(ClassVisitor v, String className, Class [] classes, int[] route) {
76 super(v);
77
78 begin_class(Constants.ACC_PUBLIC,
79 className,
80 MIXIN,
81 TypeUtils.getTypes(getInterfaces(classes)),
82 Constants.SOURCE_FILE);
83 EmitUtils.null_constructor(this);
84 EmitUtils.factory_method(this, NEW_INSTANCE);
85
86 declare_field(Constants.ACC_PRIVATE, FIELD_NAME, Constants.TYPE_OBJECT_ARRAY, null, null);
87
88 CodeEmitter e = begin_method(Constants.ACC_PUBLIC, CSTRUCT_OBJECT_ARRAY, null, null);
89 e.load_this();
90 e.super_invoke_constructor();
91 e.load_this();
92 e.load_arg(0);
93 e.putfield(FIELD_NAME);
94 e.return_value();
95 e.end_method();
96
97 Set unique = new HashSet();
98 for (int i = 0; i < classes.length; i++) {
99 Method [] methods = getMethods(classes[i]);
100 for (int j = 0; j < methods.length; j++) {
101 if (unique.add(MethodWrapper.create(methods[j]))) {
102 Method method = methods[j];
103 e = begin_method(Constants.ACC_PUBLIC,
104 ReflectUtils.getSignature(method),
105 ReflectUtils.getExceptionTypes(method),
106 null);
107 e.load_this();
108 e.getfield(FIELD_NAME);
109 e.aaload((route != null) ? route[i] : i);
110 e.checkcast(Type.getType(method.getDeclaringClass()));
111 e.load_args();
112 e.invoke(method);
113 e.return_value();
114 e.end_method();
115 }
116 }
117 }
118
119 end_class();
120 }
121
122 protected Class [] getInterfaces(Class [] classes) {
123 return classes;
124 }
125
126 protected Method [] getMethods(Class type) {
127 return type.getMethods();
128 }
129 }
130 |
Popular Tags |
Java API By Example, From Geeks To Geeks.