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1
22
23
24 package com.mchange.v2.codegen;
25
26 import java.lang.reflect.*;
27 import java.io.File  ;
28 import java.io.Writer ;
29 import com.mchange.v1.lang.ClassUtils;
30
31 public final class CodegenUtils
32 {
33 public static String getModifierString( int modifiers )
34 {
35 StringBuffer sb = new StringBuffer (32);
36 if ( Modifier.isPublic( modifiers ) )
37 sb.append("public ");
38 if ( Modifier.isProtected( modifiers ) )
39 sb.append("protected ");
40 if ( Modifier.isPrivate( modifiers ) )
41 sb.append("private ");
42 if ( Modifier.isAbstract( modifiers ) )
43 sb.append("abstract ");
44 if ( Modifier.isStatic( modifiers ) )
45 sb.append("static ");
46 if ( Modifier.isFinal( modifiers ) )
47 sb.append("final ");
48 if ( Modifier.isSynchronized( modifiers ) )
49 sb.append("synchronized ");
50 if ( Modifier.isTransient( modifiers ) )
51 sb.append("transient ");
52 if ( Modifier.isVolatile( modifiers ) )
53 sb.append("volatile ");
54 if ( Modifier.isStrict( modifiers ) )
55 sb.append("strictfp ");
56 if ( Modifier.isNative( modifiers ) )
57 sb.append("native ");
58 if ( Modifier.isInterface( modifiers ) ) sb.append("interface ");
60 return sb.toString().trim();
61 }
62
63 public static Class unarrayClass( Class cl )
64 {
65 Class out = cl;
66 while ( out.isArray() )
67 out = out.getComponentType();
68 return out;
69 }
70
71 public static boolean inSamePackage(String cn1, String cn2)
72 {
73 int pkgdot = cn1.lastIndexOf('.');
74 int pkgdot2 = cn2.lastIndexOf('.');
75
76 if (pkgdot < 0 || pkgdot2 < 0)
78 return true;
79 if ( cn1.substring(0, pkgdot).equals(cn1.substring(0, pkgdot)) )
80 {
81 if (cn2.indexOf('.') >= 0)
82 return false;
83 else
84 return true;
85 }
86 else
87 return false;
88 }
89
90
93 public static String fqcnLastElement(String fqcn)
94 { return ClassUtils.fqcnLastElement( fqcn ); }
95
96 public static String methodSignature( Method m )
97 { return methodSignature( m, null ); }
98
99 public static String methodSignature( Method m, String [] argNames )
100 { return methodSignature( Modifier.PUBLIC, m, argNames ); }
101
102 public static String methodSignature( int modifiers, Method m, String [] argNames )
103 {
104 StringBuffer sb = new StringBuffer (256);
105 sb.append(getModifierString(modifiers));
106 sb.append(' ');
107 sb.append( ClassUtils.simpleClassName( m.getReturnType() ) );
108 sb.append(' ');
109 sb.append( m.getName() );
110 sb.append('(');
111 Class [] cls = m.getParameterTypes();
112 for(int i = 0, len = cls.length; i < len; ++i)
113 {
114 if (i != 0)
115 sb.append(", ");
116 sb.append( ClassUtils.simpleClassName( cls[i] ) );
117 sb.append(' ');
118 sb.append( argNames == null ? String.valueOf((char) ('a' + i)) : argNames[i] );
119 }
120 sb.append(')');
121 Class [] excClasses = m.getExceptionTypes();
122 if (excClasses.length > 0)
123 {
124 sb.append(" throws ");
125 for (int i = 0, len = excClasses.length; i < len; ++i)
126 {
127 if (i != 0)
128 sb.append(", ");
129 sb.append( ClassUtils.simpleClassName( excClasses[i] ) );
130 }
131 }
132 return sb.toString();
133 }
134
135 public static String methodCall( Method m )
136 { return methodCall( m, null ); }
137
138 public static String methodCall( Method m, String [] argNames )
139 {
140 StringBuffer sb = new StringBuffer (256);
141 sb.append( m.getName() );
142 sb.append('(');
143 Class [] cls = m.getParameterTypes();
144 for(int i = 0, len = cls.length; i < len; ++i)
145 {
146 if (i != 0)
147 sb.append(", ");
148 sb.append( argNames == null ? generatedArgumentName( i ) : argNames[i] );
149 }
150 sb.append(')');
151 return sb.toString();
152 }
153
154 public static String generatedArgumentName( int index )
155 { return String.valueOf((char) ('a' + index)); }
156
157 public static String simpleClassName( Class cl )
158 { return ClassUtils.simpleClassName( cl ); }
159
160 public static IndentedWriter toIndentedWriter( Writer w )
161 { return (w instanceof IndentedWriter ? (IndentedWriter) w : new IndentedWriter(w)); }
162
163 public static String packageNameToFileSystemDirPath(String packageName)
164 {
165 StringBuffer sb = new StringBuffer ( packageName );
166 for (int i = 0, len = sb.length(); i < len; ++i)
167 if ( sb.charAt(i) == '.' )
168 sb.setCharAt(i, File.separatorChar);
169 sb.append( File.separatorChar );
170 return sb.toString();
171 }
172
173 private CodegenUtils()
174 {}
175 }
176 |
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