Source Code Cross Referenced for TraceAnnotationVisitor.java in  » Rule-Engine » drolls-Rule-Engine » org » drools » asm » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.asm.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /***
002:         * ASM: a very small and fast Java bytecode manipulation framework
003:         * Copyright (c) 2000-2005 INRIA, France Telecom
004:         * All rights reserved.
005:         *
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions
008:         * are met:
009:         * 1. Redistributions of source code must retain the above copyright
010:         *    notice, this list of conditions and the following disclaimer.
011:         * 2. Redistributions in binary form must reproduce the above copyright
012:         *    notice, this list of conditions and the following disclaimer in the
013:         *    documentation and/or other materials provided with the distribution.
014:         * 3. Neither the name of the copyright holders nor the names of its
015:         *    contributors may be used to endorse or promote products derived from
016:         *    this software without specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
020:         * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
021:         * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
022:         * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
024:         * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
025:         * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
026:         * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
027:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
028:         * THE POSSIBILITY OF SUCH DAMAGE.
029:         */package org.drools.asm.util;
030:
031:        import org.drools.asm.AnnotationVisitor;
032:        import org.drools.asm.Type;
033:
034:        /**
035:         * An {@link AnnotationVisitor} that prints a disassembled view of the
036:         * annotations it visits.
037:         * 
038:         * @author Eric Bruneton
039:         */
040:        public class TraceAnnotationVisitor extends TraceAbstractVisitor
041:                implements  AnnotationVisitor {
042:
043:            /**
044:             * The {@link AnnotationVisitor} to which this visitor delegates calls. May
045:             * be <tt>null</tt>.
046:             */
047:            protected AnnotationVisitor av;
048:
049:            private int valueNumber = 0;
050:
051:            /**
052:             * Constructs a new {@link TraceAnnotationVisitor}.
053:             */
054:            public TraceAnnotationVisitor() {
055:                // ignore
056:            }
057:
058:            // ------------------------------------------------------------------------
059:            // Implementation of the AnnotationVisitor interface
060:            // ------------------------------------------------------------------------
061:
062:            public void visit(final String name, final Object value) {
063:                this .buf.setLength(0);
064:                appendComa(this .valueNumber++);
065:
066:                if (name != null) {
067:                    this .buf.append(name).append('=');
068:                }
069:
070:                if (value instanceof  String) {
071:                    visitString((String) value);
072:                } else if (value instanceof  Type) {
073:                    visitType((Type) value);
074:                } else if (value instanceof  Byte) {
075:                    visitByte(((Byte) value).byteValue());
076:                } else if (value instanceof  Boolean) {
077:                    visitBoolean(((Boolean) value).booleanValue());
078:                } else if (value instanceof  Short) {
079:                    visitShort(((Short) value).shortValue());
080:                } else if (value instanceof  Character) {
081:                    visitChar(((Character) value).charValue());
082:                } else if (value instanceof  Integer) {
083:                    visitInt(((Integer) value).intValue());
084:                } else if (value instanceof  Float) {
085:                    visitFloat(((Float) value).floatValue());
086:                } else if (value instanceof  Long) {
087:                    visitLong(((Long) value).longValue());
088:                } else if (value instanceof  Double) {
089:                    visitDouble(((Double) value).doubleValue());
090:                } else if (value.getClass().isArray()) {
091:                    this .buf.append('{');
092:                    if (value instanceof  byte[]) {
093:                        final byte[] v = (byte[]) value;
094:                        for (int i = 0; i < v.length; i++) {
095:                            appendComa(i);
096:                            visitByte(v[i]);
097:                        }
098:                    } else if (value instanceof  boolean[]) {
099:                        final boolean[] v = (boolean[]) value;
100:                        for (int i = 0; i < v.length; i++) {
101:                            appendComa(i);
102:                            visitBoolean(v[i]);
103:                        }
104:                    } else if (value instanceof  short[]) {
105:                        final short[] v = (short[]) value;
106:                        for (int i = 0; i < v.length; i++) {
107:                            appendComa(i);
108:                            visitShort(v[i]);
109:                        }
110:                    } else if (value instanceof  char[]) {
111:                        final char[] v = (char[]) value;
112:                        for (int i = 0; i < v.length; i++) {
113:                            appendComa(i);
114:                            visitChar(v[i]);
115:                        }
116:                    } else if (value instanceof  int[]) {
117:                        final int[] v = (int[]) value;
118:                        for (int i = 0; i < v.length; i++) {
119:                            appendComa(i);
120:                            visitInt(v[i]);
121:                        }
122:                    } else if (value instanceof  long[]) {
123:                        final long[] v = (long[]) value;
124:                        for (int i = 0; i < v.length; i++) {
125:                            appendComa(i);
126:                            visitLong(v[i]);
127:                        }
128:                    } else if (value instanceof  float[]) {
129:                        final float[] v = (float[]) value;
130:                        for (int i = 0; i < v.length; i++) {
131:                            appendComa(i);
132:                            visitFloat(v[i]);
133:                        }
134:                    } else if (value instanceof  double[]) {
135:                        final double[] v = (double[]) value;
136:                        for (int i = 0; i < v.length; i++) {
137:                            appendComa(i);
138:                            visitDouble(v[i]);
139:                        }
140:                    }
141:                    this .buf.append('}');
142:                } else {
143:                    this .buf.append(value);
144:                }
145:
146:                this .text.add(this .buf.toString());
147:
148:                if (this .av != null) {
149:                    this .av.visit(name, value);
150:                }
151:            }
152:
153:            private void visitInt(final int value) {
154:                this .buf.append(value);
155:            }
156:
157:            private void visitLong(final long value) {
158:                this .buf.append(value).append('L');
159:            }
160:
161:            private void visitFloat(final float value) {
162:                this .buf.append(value).append('F');
163:            }
164:
165:            private void visitDouble(final double value) {
166:                this .buf.append(value).append('D');
167:            }
168:
169:            private void visitChar(final char value) {
170:                this .buf.append("(char)").append((int) value);
171:            }
172:
173:            private void visitShort(final short value) {
174:                this .buf.append("(short)").append(value);
175:            }
176:
177:            private void visitByte(final byte value) {
178:                this .buf.append("(byte)").append(value);
179:            }
180:
181:            private void visitBoolean(final boolean value) {
182:                this .buf.append(value);
183:            }
184:
185:            private void visitString(final String value) {
186:                appendString(this .buf, value);
187:            }
188:
189:            private void visitType(final Type value) {
190:                this .buf.append(value.getClassName()).append(".class");
191:            }
192:
193:            public void visitEnum(final String name, final String desc,
194:                    final String value) {
195:                this .buf.setLength(0);
196:                appendComa(this .valueNumber++);
197:                if (name != null) {
198:                    this .buf.append(name).append('=');
199:                }
200:                appendDescriptor(TraceAbstractVisitor.FIELD_DESCRIPTOR, desc);
201:                this .buf.append('.').append(value);
202:                this .text.add(this .buf.toString());
203:
204:                if (this .av != null) {
205:                    this .av.visitEnum(name, desc, value);
206:                }
207:            }
208:
209:            public AnnotationVisitor visitAnnotation(final String name,
210:                    final String desc) {
211:                this .buf.setLength(0);
212:                appendComa(this .valueNumber++);
213:                if (name != null) {
214:                    this .buf.append(name).append('=');
215:                }
216:                this .buf.append('@');
217:                appendDescriptor(TraceAbstractVisitor.FIELD_DESCRIPTOR, desc);
218:                this .buf.append('(');
219:                this .text.add(this .buf.toString());
220:                final TraceAnnotationVisitor tav = createTraceAnnotationVisitor();
221:                this .text.add(tav.getText());
222:                this .text.add(")");
223:                if (this .av != null) {
224:                    tav.av = this .av.visitAnnotation(name, desc);
225:                }
226:                return tav;
227:            }
228:
229:            public AnnotationVisitor visitArray(final String name) {
230:                this .buf.setLength(0);
231:                appendComa(this .valueNumber++);
232:                if (name != null) {
233:                    this .buf.append(name).append('=');
234:                }
235:                this .buf.append('{');
236:                this .text.add(this .buf.toString());
237:                final TraceAnnotationVisitor tav = createTraceAnnotationVisitor();
238:                this .text.add(tav.getText());
239:                this .text.add("}");
240:                if (this .av != null) {
241:                    tav.av = this .av.visitArray(name);
242:                }
243:                return tav;
244:            }
245:
246:            public void visitEnd() {
247:                if (this .av != null) {
248:                    this .av.visitEnd();
249:                }
250:            }
251:
252:            // ------------------------------------------------------------------------
253:            // Utility methods
254:            // ------------------------------------------------------------------------
255:
256:            protected TraceAnnotationVisitor createTraceAnnotationVisitor() {
257:                return new TraceAnnotationVisitor();
258:            }
259:
260:            private void appendComa(final int i) {
261:                if (i != 0) {
262:                    this .buf.append(", ");
263:                }
264:            }
265:        }
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