Source Code Cross Referenced for FieldSetJoinPointCompiler.java in  » Net » Terracotta » com » tc » aspectwerkz » transform » inlining » compiler » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » Terracotta » com.tc.aspectwerkz.transform.inlining.compiler 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice.  All rights reserved.
003:         */
004:        package com.tc.aspectwerkz.transform.inlining.compiler;
005:
006:        import com.tc.asm.MethodVisitor;
007:        import com.tc.asm.Type;
008:
009:        import com.tc.aspectwerkz.transform.TransformationUtil;
010:        import com.tc.aspectwerkz.transform.inlining.AsmHelper;
011:        import com.tc.aspectwerkz.transform.inlining.compiler.AbstractJoinPointCompiler;
012:
013:        import java.lang.reflect.Modifier;
014:
015:        /**
016:         * A compiler that compiles/generates a class that represents a specific join point, a class which invokes the advices
017:         * and the target join point statically.
018:         *
019:         * @author <a href="mailto:jboner@codehaus.org">Jonas BonŽr </a>
020:         * @author <a href="mailto:alex AT gnilux DOT com">Alexandre Vasseur </a>
021:         */
022:        public class FieldSetJoinPointCompiler extends
023:                AbstractJoinPointCompiler {
024:
025:            /**
026:             * Creates a new join point compiler instance.
027:             *
028:             * @param model
029:             */
030:            FieldSetJoinPointCompiler(final CompilationInfo.Model model) {
031:                super (model);
032:            }
033:
034:            /**
035:             * Creates join point specific fields.
036:             */
037:            protected void createJoinPointSpecificFields() {
038:                String[] fieldNames = null;
039:                // create the field argument field
040:                Type fieldType = Type.getType(m_calleeMemberDesc);
041:                fieldNames = new String[1];
042:                String fieldName = ARGUMENT_FIELD + 0;
043:                fieldNames[0] = fieldName;
044:                m_cw.visitField(ACC_PRIVATE, fieldName, fieldType
045:                        .getDescriptor(), null, null);
046:                m_fieldNames = fieldNames;
047:
048:                m_cw.visitField(ACC_PRIVATE + ACC_STATIC, SIGNATURE_FIELD_NAME,
049:                        FIELD_SIGNATURE_IMPL_CLASS_SIGNATURE, null, null);
050:            }
051:
052:            /**
053:             * Creates the signature for the join point.
054:             * <p/>
055:             * FIXME signature field should NOT be of type Signature but of the specific type (update all refs as well)
056:             *
057:             * @param cv
058:             */
059:            protected void createSignature(final MethodVisitor cv) {
060:                cv.visitFieldInsn(GETSTATIC, m_joinPointClassName,
061:                        TARGET_CLASS_FIELD_NAME_IN_JP, CLASS_CLASS_SIGNATURE);
062:                cv.visitLdcInsn(new Integer(m_joinPointHash));
063:
064:                cv.visitMethodInsn(INVOKESTATIC, SIGNATURE_FACTORY_CLASS,
065:                        NEW_FIELD_SIGNATURE_METHOD_NAME,
066:                        NEW_FIELD_SIGNATURE_METHOD_SIGNATURE);
067:                cv.visitFieldInsn(PUTSTATIC, m_joinPointClassName,
068:                        SIGNATURE_FIELD_NAME,
069:                        FIELD_SIGNATURE_IMPL_CLASS_SIGNATURE);
070:            }
071:
072:            /**
073:             * Optimized implementation that does not retrieve the parameters from the join point instance but is passed
074:             * directly to the method from the input parameters in the 'invoke' method. Can only be used if no around advice
075:             * exists.
076:             *
077:             * @param cv
078:             * @param input
079:             */
080:            protected void createInlinedJoinPointInvocation(
081:                    final MethodVisitor cv, final CompilerInput input) {
082:
083:                // load the target instance (arg0 else not available for static target)
084:                if (!Modifier.isStatic(m_calleeMemberModifiers)) {
085:                    cv.visitVarInsn(ALOAD, 0);
086:                }
087:
088:                loadArgumentMemberFields(cv, input.argStartIndex);
089:
090:                // do we have a public field ? If so don't use the wrappers
091:                if (Modifier.isPublic(m_calleeMemberModifiers)) {
092:                    if (Modifier.isStatic(m_calleeMemberModifiers)) {
093:                        cv.visitFieldInsn(PUTSTATIC, m_calleeClassName,
094:                                m_calleeMemberName, m_calleeMemberDesc);
095:                    } else {
096:                        cv.visitFieldInsn(PUTFIELD, m_calleeClassName,
097:                                m_calleeMemberName, m_calleeMemberDesc);
098:                    }
099:                } else {
100:                    String joinPointName = null; // can be prefixed
101:                    joinPointName = m_calleeMemberName;
102:                    joinPointName = TransformationUtil.getWrapperMethodName(
103:                            joinPointName, m_calleeMemberDesc,
104:                            m_calleeClassName, PUTFIELD_WRAPPER_METHOD_PREFIX);
105:                    StringBuffer sig = new StringBuffer();
106:                    sig.append('(');
107:                    sig.append(m_calleeMemberDesc);
108:                    sig.append(')');
109:                    sig.append('V');
110:                    if (Modifier.isStatic(m_calleeMemberModifiers)) {
111:                        cv.visitMethodInsn(INVOKESTATIC, m_calleeClassName,
112:                                joinPointName, sig.toString());
113:                    } else {
114:                        cv.visitMethodInsn(INVOKEVIRTUAL, m_calleeClassName,
115:                                joinPointName, sig.toString());
116:                    }
117:                }
118:
119:                AsmHelper.addDefaultValue(cv, m_argumentTypes[0]);
120:            }
121:
122:            /**
123:             * Creates a call to the target join point, the parameter(s) to the join point are retrieved from the invocation
124:             * local join point instance.
125:             *
126:             * @param cv
127:             */
128:            protected void createJoinPointInvocation(final MethodVisitor cv) {
129:
130:                // load the target instance member field unless calleeMember is static
131:                if (!Modifier.isStatic(m_calleeMemberModifiers)) {
132:                    cv.visitVarInsn(ALOAD, 0);
133:                    cv.visitFieldInsn(GETFIELD, m_joinPointClassName,
134:                            CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
135:                }
136:
137:                loadArguments(cv);
138:
139:                // do we have a public field ? If so don't use the wrappers
140:                if (Modifier.isPublic(m_calleeMemberModifiers)) {
141:                    if (Modifier.isStatic(m_calleeMemberModifiers)) {
142:                        cv.visitFieldInsn(PUTSTATIC, m_calleeClassName,
143:                                m_calleeMemberName, m_calleeMemberDesc);
144:                    } else {
145:                        cv.visitFieldInsn(PUTFIELD, m_calleeClassName,
146:                                m_calleeMemberName, m_calleeMemberDesc);
147:                    }
148:                } else {
149:                    String joinPointName = TransformationUtil
150:                            .getWrapperMethodName(m_calleeMemberName,
151:                                    m_calleeMemberDesc, m_calleeClassName,
152:                                    PUTFIELD_WRAPPER_METHOD_PREFIX);
153:                    StringBuffer putFieldWrapperDesc = new StringBuffer();
154:                    putFieldWrapperDesc.append('(');
155:                    putFieldWrapperDesc.append(m_calleeMemberDesc);
156:                    putFieldWrapperDesc.append(')');
157:                    putFieldWrapperDesc.append('V');
158:                    if (Modifier.isStatic(m_calleeMemberModifiers)) {
159:                        cv.visitMethodInsn(INVOKESTATIC, m_calleeClassName,
160:                                joinPointName, putFieldWrapperDesc.toString());
161:                    } else {
162:                        cv.visitMethodInsn(INVOKEVIRTUAL, m_calleeClassName,
163:                                joinPointName, putFieldWrapperDesc.toString());
164:                    }
165:                }
166:
167:                AsmHelper.addDefaultValue(cv, m_argumentTypes[0]);
168:            }
169:
170:            /**
171:             * Returns the join points return type.
172:             *
173:             * @return
174:             */
175:            protected Type getJoinPointReturnType() {
176:                return Type.getType(m_calleeMemberDesc);
177:            }
178:
179:            /**
180:             * Returns the join points argument type(s).
181:             *
182:             * @return
183:             */
184:            protected Type[] getJoinPointArgumentTypes() {
185:                return new Type[] { Type.getType(m_calleeMemberDesc) };
186:            }
187:
188:            /**
189:             * Creates the getRtti method
190:             */
191:            protected void createGetRttiMethod() {
192:                MethodVisitor cv = m_cw.visitMethod(ACC_PUBLIC,
193:                        GET_RTTI_METHOD_NAME, GET_RTTI_METHOD_SIGNATURE, null,
194:                        null);
195:
196:                // new FieldRttiImpl( .. )
197:                cv.visitTypeInsn(NEW, FIELD_RTTI_IMPL_CLASS_NAME);
198:                cv.visitInsn(DUP);
199:                cv.visitFieldInsn(GETSTATIC, m_joinPointClassName,
200:                        SIGNATURE_FIELD_NAME,
201:                        FIELD_SIGNATURE_IMPL_CLASS_SIGNATURE);
202:                cv.visitVarInsn(ALOAD, 0);
203:                cv.visitFieldInsn(GETFIELD, m_joinPointClassName,
204:                        CALLER_INSTANCE_FIELD_NAME, m_callerClassSignature);
205:                cv.visitVarInsn(ALOAD, 0);
206:                cv.visitFieldInsn(GETFIELD, m_joinPointClassName,
207:                        CALLEE_INSTANCE_FIELD_NAME, m_calleeClassSignature);
208:                cv.visitMethodInsn(INVOKESPECIAL, FIELD_RTTI_IMPL_CLASS_NAME,
209:                        INIT_METHOD_NAME, FIELD_RTTI_IMPL_INIT_SIGNATURE);
210:
211:                // set the value
212:                cv.visitInsn(DUP);
213:                if (AsmHelper.isPrimitive(m_returnType)) {
214:                    AsmHelper.prepareWrappingOfPrimitiveType(cv, m_returnType);
215:                    cv.visitVarInsn(ALOAD, 0);
216:                    cv.visitFieldInsn(GETFIELD, m_joinPointClassName,
217:                            RETURN_VALUE_FIELD_NAME, m_returnType
218:                                    .getDescriptor());
219:                    AsmHelper.wrapPrimitiveType(cv, m_returnType);
220:                } else {
221:                    cv.visitVarInsn(ALOAD, 0);
222:                    cv.visitFieldInsn(GETFIELD, m_joinPointClassName,
223:                            RETURN_VALUE_FIELD_NAME, m_returnType
224:                                    .getDescriptor());
225:                }
226:                cv.visitMethodInsn(INVOKEVIRTUAL, FIELD_RTTI_IMPL_CLASS_NAME,
227:                        SET_FIELD_VALUE_METHOD_NAME,
228:                        SET_FIELD_VALUE_METHOD_SIGNATURE);
229:
230:                cv.visitInsn(ARETURN);
231:                cv.visitMaxs(0, 0);
232:            }
233:
234:            /**
235:             * Creates the getSignature method.
236:             */
237:            protected void createGetSignatureMethod() {
238:                MethodVisitor cv = m_cw.visitMethod(ACC_PUBLIC,
239:                        GET_SIGNATURE_METHOD_NAME,
240:                        GET_SIGNATURE_METHOD_SIGNATURE, null, null);
241:                cv.visitFieldInsn(GETSTATIC, m_joinPointClassName,
242:                        SIGNATURE_FIELD_NAME,
243:                        FIELD_SIGNATURE_IMPL_CLASS_SIGNATURE);
244:                cv.visitInsn(ARETURN);
245:                cv.visitMaxs(0, 0);
246:            }
247:        }
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