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16 package net.sf.cglib.reflect;
17
18 import net.sf.cglib.core.*;
19 import java.lang.reflect.Constructor  ;
20 import java.lang.reflect.InvocationTargetException ;
21 import java.lang.reflect.Method ;
22 import org.objectweb.asm.ClassVisitor;
23 import org.objectweb.asm.Type;
24
25 abstract public class FastClass
26 {
27 private Class type;
28
29 protected FastClass() {
30 throw new Error ("Using the FastClass empty constructor--please report to the cglib-devel mailing list");
31 }
32
33 protected FastClass(Class type) {
34 this.type = type;
35 }
36
37 public static FastClass create(Class type) {
38
39 return create(type.getClassLoader(),type);
40
41 }
42 public static FastClass create(ClassLoader loader, Class type) {
43 Generator gen = new Generator();
44 gen.setType(type);
45 gen.setClassLoader(loader);
46 return gen.create();
47 }
48
49 public static class Generator extends AbstractClassGenerator
50 {
51 private static final Source SOURCE = new Source(FastClass.class.getName());
52 private Class type;
53
54 public Generator() {
55 super(SOURCE);
56 }
57
58 public void setType(Class type) {
59 this.type = type;
60 }
61
62 public FastClass create() {
63 setNamePrefix(type.getName());
64 return (FastClass)super.create(type.getName());
65 }
66
67 protected ClassLoader getDefaultClassLoader() {
68 return type.getClassLoader();
69 }
70
71 public void generateClass(ClassVisitor v) throws Exception {
72 new FastClassEmitter(v, getClassName(), type);
73 }
74
75 protected Object firstInstance(Class type) {
76 return ReflectUtils.newInstance(type,
77 new Class []{ Class .class },
78 new Object []{ this.type });
79 }
80
81 protected Object nextInstance(Object instance) {
82 return instance;
83 }
84 }
85
86 public Object invoke(String name, Class [] parameterTypes, Object obj, Object [] args) throws InvocationTargetException {
87 return invoke(getIndex(name, parameterTypes), obj, args);
88 }
89
90 public Object newInstance() throws InvocationTargetException {
91 return newInstance(getIndex(Constants.EMPTY_CLASS_ARRAY), null);
92 }
93
94 public Object newInstance(Class [] parameterTypes, Object [] args) throws InvocationTargetException {
95 return newInstance(getIndex(parameterTypes), args);
96 }
97
98 public FastMethod getMethod(Method method) {
99 return new FastMethod(this, method);
100 }
101
102 public FastConstructor getConstructor(Constructor constructor) {
103 return new FastConstructor(this, constructor);
104 }
105
106 public FastMethod getMethod(String name, Class [] parameterTypes) {
107 try {
108 return getMethod(type.getMethod(name, parameterTypes));
109 } catch (NoSuchMethodException e) {
110 throw new NoSuchMethodError (e.getMessage());
111 }
112 }
113
114 public FastConstructor getConstructor(Class [] parameterTypes) {
115 try {
116 return getConstructor(type.getConstructor(parameterTypes));
117 } catch (NoSuchMethodException e) {
118 throw new NoSuchMethodError (e.getMessage());
119 }
120 }
121
122 public String getName() {
123 return type.getName();
124 }
125
126 public Class getJavaClass() {
127 return type;
128 }
129
130 public String toString() {
131 return type.toString();
132 }
133
134 public int hashCode() {
135 return type.hashCode();
136 }
137
138 public boolean equals(Object o) {
139 if (o == null || !(o instanceof FastClass)) {
140 return false;
141 }
142 return type.equals(((FastClass)o).type);
143 }
144
145
155 abstract public int getIndex(String name, Class [] parameterTypes);
156
157
164 abstract public int getIndex(Class [] parameterTypes);
165
166
174 abstract public Object invoke(int index, Object obj, Object [] args) throws InvocationTargetException ;
175
176
183 abstract public Object newInstance(int index, Object [] args) throws InvocationTargetException ;
184
185 abstract public int getIndex(Signature sig);
186
187
190 abstract public int getMaxIndex();
191
192 protected static String getSignatureWithoutReturnType(String name, Class [] parameterTypes) {
193 StringBuffer sb = new StringBuffer ();
194 sb.append(name);
195 sb.append('(');
196 for (int i = 0; i < parameterTypes.length; i++) {
197 sb.append(Type.getDescriptor(parameterTypes[i]));
198 }
199 sb.append(')');
200 return sb.toString();
201 }
202 }
203 |
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