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1
26
27 package net.sourceforge.groboutils.codecoverage.v2;
28
29 import java.io.ByteArrayInputStream  ;
30 import java.io.IOException ;
31 import java.io.InputStream ;
32
33 import junit.framework.Assert;
34 import net.sourceforge.groboutils.util.io.v1.ReadByteStream;
35
36 import org.apache.bcel.classfile.ClassParser;
37 import org.apache.bcel.classfile.Code;
38 import org.apache.bcel.classfile.JavaClass;
39 import org.apache.bcel.generic.ConstantPoolGen;
40
41
42
49 public class BytecodeLoaderUtil
50 {
51 private static final Class THIS_CLASS = BytecodeLoaderUtil.class;
52
53 public static String getClassFilename( Class c )
54 {
55 Assert.assertNotNull( "Null class.", c );
56 return getClassFilename( c.getName() );
57 }
58
59 public static String getClassFilename( String name )
60 {
61 Assert.assertNotNull( "Null class name.", name );
62 String filename = name.replace( '.', '/' )+".class";
63 return filename;
64 }
65
66 public static InputStream loadBytecodeStream( String filename )
67 throws IOException
68 {
69 Assert.assertNotNull( "Null filename.", filename );
70 ClassLoader cl = THIS_CLASS.getClassLoader();
71 InputStream is = cl.getSystemResourceAsStream( filename );
72 Assert.assertNotNull(
73 "resource '"+filename+"' could not be found.",
74 is );
75 return is;
76 }
77
78 public static byte[] loadBytecode( String filename )
79 throws IOException
80 {
81 Assert.assertNotNull( "Null filename.", filename );
82 InputStream is = loadBytecodeStream( filename );
83 return ReadByteStream.readByteStream( is );
84 }
85
86 public static JavaClass loadJavaClass( String className )
87 throws IOException
88 {
89 String filename = getClassFilename( className );
90 InputStream is = loadBytecodeStream( filename );
91 ClassParser cp = new ClassParser( is, filename );
92 JavaClass jc = cp.parse();
93 return jc;
94 }
95
96 public static JavaClass loadJavaClass( String className, byte[] bytecode )
97 throws IOException
98 {
99 String filename = getClassFilename( className );
100 ByteArrayInputStream is = new ByteArrayInputStream ( bytecode );
101 ClassParser cp = new ClassParser( is, filename );
102 JavaClass jc = cp.parse();
103 return jc;
104 }
105
106
107 public static Class loadClassFromBytecode( String className, byte[] b )
108 throws ClassNotFoundException
109 {
110 ArrayClassLoader acl = new ArrayClassLoader();
111 acl.addClass( className, b );
112 Class c = acl.loadClass( className );
113 return c;
114 }
115
116
117 public static void runMain( Class cz )
118 throws Exception
119 {
120 String s[] = new String [0];
121 java.lang.reflect.Method m = cz.getMethod( "main",
122 new Class [] { s.getClass() } );
123 m.invoke( null, new Object [] { s } );
124 }
125
126
127 public static void verifyClass( String className, byte[] b )
128 throws Exception
129 {
130 JavaClass jc = loadJavaClass( className, b );
131
132 org.apache.bcel.generic.ClassGen modClass =
134 new org.apache.bcel.generic.ClassGen( jc );
135 ConstantPoolGen constantPool = modClass.getConstantPool();
136 org.apache.bcel.classfile.Method mL[] = modClass.getMethods();
137
138 for (int i = 0; i < mL.length; ++i)
139 {
140 verifyMethod( mL[i], constantPool );
141 }
142 }
143
144
145 public static void verifyMethod( org.apache.bcel.classfile.Method m,
146 ConstantPoolGen cp )
147 throws Exception
148 {
149 Code c = m.getCode();
150 org.apache.bcel.classfile.CodeException ce[] = c.getExceptionTable();
151 for (int i = 0; i < ce.length; ++i)
152 {
153
158
159 }
162 }
163 }
164
165 |
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