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The AspectJ weaver introduces advices to java classes
/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
package org.aspectj.weaver;
import java.lang.reflect.Modifier;
public class NameMangler {
// public static final char[] AJC_DOLLAR_PREFIX = { 'a', 'j', 'c', '$' };
// public static final char[] CLINIT = { '<', 'c', 'l', 'i', 'n', 'i', 't', '>' };
public static final String PREFIX = "ajc$";
public static final char[] PREFIX_CHARS = "ajc$".toCharArray();
// public static final char[] INIT = { '<', 'i', 'n', 'i', 't', '>' };
public static final String ITD_PREFIX = PREFIX + "interType$";
// public static final char[] METHOD_ASPECTOF = {'a', 's', 'p','e','c','t','O','f'};
// public static final char[] METHOD_HASASPECT = { 'h', 'a', 's', 'A', 's', 'p', 'e', 'c', 't' };
// public static final char[] STATIC_INITIALIZER = { '<', 'c', 'l', 'i', 'n', 'i', 't', '>' };
public static final String CFLOW_STACK_TYPE = "org.aspectj.runtime.internal.CFlowStack";
public static final String CFLOW_COUNTER_TYPE = "org.aspectj.runtime.internal.CFlowCounter";
public static final UnresolvedType CFLOW_STACK_UNRESOLVEDTYPE = UnresolvedType
.forSignature("Lorg/aspectj/runtime/internal/CFlowStack;");
public static final UnresolvedType CFLOW_COUNTER_UNRESOLVEDTYPE = UnresolvedType
.forSignature("Lorg/aspectj/runtime/internal/CFlowCounter;");
public static final String SOFT_EXCEPTION_TYPE = "org.aspectj.lang.SoftException";
public static final String PERSINGLETON_FIELD_NAME = PREFIX + "perSingletonInstance";
public static final String PERCFLOW_FIELD_NAME = PREFIX + "perCflowStack";
// public static final String PERTHIS_FIELD_NAME = PREFIX + "perSingletonInstance";
// -----
public static final String PERCFLOW_PUSH_METHOD = PREFIX + "perCflowPush";
public static final String PEROBJECT_BIND_METHOD = PREFIX + "perObjectBind";
// PTWIMPL Method and field names
public static final String PERTYPEWITHIN_GETINSTANCE_METHOD = PREFIX + "getInstance";
public static final String PERTYPEWITHIN_CREATEASPECTINSTANCE_METHOD = PREFIX + "createAspectInstance";
public static final String PERTYPEWITHIN_WITHINTYPEFIELD = PREFIX + "withinType";
public static final String PERTYPEWITHIN_GETWITHINTYPENAME_METHOD = "getWithinTypeName";
public static final String AJC_PRE_CLINIT_NAME = PREFIX + "preClinit";
public static final String AJC_POST_CLINIT_NAME = PREFIX + "postClinit";
public static final String INITFAILURECAUSE_FIELD_NAME = PREFIX + "initFailureCause";
public static final String ANNOTATION_CACHE_FIELD_NAME = PREFIX + "anno$";
public static boolean isSyntheticMethod(String methodName, boolean declaredInAspect) {
if (methodName.startsWith(PREFIX)) {
// it's synthetic unless it is an advice method
if (methodName.startsWith("ajc$before") || methodName.startsWith("ajc$after")) {
return false;
} else if (methodName.startsWith("ajc$around")) {
// around advice method is not synthetic, but generated proceed is...
return (methodName.endsWith("proceed"));
} else if (methodName.startsWith("ajc$interMethod$")) {
return false; // body of an itd-m
}
return true;
} else if (methodName.indexOf("_aroundBody") != -1) {
return true;
}
// these aren't the droids you're looking for...move along...... pr148727
// else if (declaredInAspect) {
// if (methodName.equals("aspectOf") || methodName.equals("hasAspect")) {
// return true;
// }
// }
return false;
}
public static String perObjectInterfaceGet(UnresolvedType aspectType) {
return makeName(aspectType.getNameAsIdentifier(), "perObjectGet");
}
public static String perObjectInterfaceSet(UnresolvedType aspectType) {
return makeName(aspectType.getNameAsIdentifier(), "perObjectSet");
}
public static String perObjectInterfaceField(UnresolvedType aspectType) {
return makeName(aspectType.getNameAsIdentifier(), "perObjectField");
}
// PTWIMPL method names that must include aspect type
public static String perTypeWithinFieldForTarget(UnresolvedType aspectType) {
return makeName(aspectType.getNameAsIdentifier(), "ptwAspectInstance");
}
public static String perTypeWithinLocalAspectOf(UnresolvedType aspectType) {
return makeName(aspectType.getNameAsIdentifier(), "localAspectOf");
}
public static String itdAtDeclareParentsField(UnresolvedType aspectType, UnresolvedType itdType) {
return makeName("instance", aspectType.getNameAsIdentifier(), itdType.getNameAsIdentifier());
}
public static String privilegedAccessMethodForMethod(String name, UnresolvedType objectType, UnresolvedType aspectType) {
return makeName("privMethod", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name);
}
/**
* Create the old style (<1.6.9) format getter name which includes the aspect requesting access and the type containing the
* field in the name of the type. At 1.6.9 and above the name is simply ajc$get$
*/
public static String privilegedAccessMethodForFieldGet(String name, UnresolvedType objectType, UnresolvedType aspectType) {
StringBuilder nameBuilder = new StringBuilder();
nameBuilder.append(makeName("privFieldGet", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name));
return nameBuilder.toString();
}
/**
* Create the old style (<1.6.9) format setter name which includes the aspect requesting access and the type containing the
* field in the name of the type. At 1.6.9 and above the name is simply ajc$set$
*/
public static String privilegedAccessMethodForFieldSet(String name, UnresolvedType objectType, UnresolvedType aspectType) {
return makeName("privFieldSet", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name);
}
public static String inlineAccessMethodForMethod(String name, UnresolvedType objectType, UnresolvedType aspectType) {
return makeName("inlineAccessMethod", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name);
}
public static String inlineAccessMethodForFieldGet(String name, UnresolvedType objectType, UnresolvedType aspectType) {
return makeName("inlineAccessFieldGet", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name);
}
public static String inlineAccessMethodForFieldSet(String name, UnresolvedType objectType, UnresolvedType aspectType) {
return makeName("inlineAccessFieldSet", aspectType.getNameAsIdentifier(), objectType.getNameAsIdentifier(), name);
}
/**
* The name of methods corresponding to advice declarations Of the form:
* "ajc$[AdviceKind]$[AspectName]$[NumberOfAdviceInAspect]$[PointcutHash]"
*/
public static String adviceName(String nameAsIdentifier, AdviceKind kind, int adviceSeqNumber, int pcdHash) {
String newname = makeName(kind.getName(), nameAsIdentifier, Integer.toString(adviceSeqNumber), Integer.toHexString(pcdHash));
return newname;
}
/**
* This field goes on top-most implementers of the interface the field is declared onto
*/
public static String interFieldInterfaceField(UnresolvedType aspectType, UnresolvedType interfaceType, String name) {
return makeName("interField", aspectType.getNameAsIdentifier(), interfaceType.getNameAsIdentifier(), name);
}
/**
* This instance method goes on the interface the field is declared onto as well as its top-most implementors
*/
public static String interFieldInterfaceSetter(UnresolvedType aspectType, UnresolvedType interfaceType, String name) {
return makeName("interFieldSet", aspectType.getNameAsIdentifier(), interfaceType.getNameAsIdentifier(), name);
}
/**
* This instance method goes on the interface the field is declared onto as well as its top-most implementors
*/
public static String interFieldInterfaceGetter(UnresolvedType aspectType, UnresolvedType interfaceType, String name) {
return makeName("interFieldGet", aspectType.getNameAsIdentifier(), interfaceType.getNameAsIdentifier(), name);
}
/**
* This static method goes on the aspect that declares the inter-type field
*/
public static String interFieldSetDispatcher(UnresolvedType aspectType, UnresolvedType onType, String name) {
return makeName("interFieldSetDispatch", aspectType.getNameAsIdentifier(), onType.getNameAsIdentifier(), name);
}
/**
* This static method goes on the aspect that declares the inter-type field
*/
public static String interFieldGetDispatcher(UnresolvedType aspectType, UnresolvedType onType, String name) {
return makeName("interFieldGetDispatch", aspectType.getNameAsIdentifier(), onType.getNameAsIdentifier(), name);
}
/**
* This field goes on the class the field is declared onto
*/
public static String interFieldClassField(int modifiers, UnresolvedType aspectType, UnresolvedType classType, String name) {
// return name;
if (Modifier.isPublic(modifiers)) {
return name;
}
// // ??? might want to handle case where aspect and class are in same package similar to public
return makeName("interField", makeVisibilityName(modifiers, aspectType), name);
}
// /**
// * This static method goes on the aspect that declares the inter-type field
// */
// public static String classFieldSetDispatcher(UnresolvedType aspectType, UnresolvedType classType, String name) {
// return makeName("interFieldSetDispatch", aspectType.getNameAsIdentifier(),
// classType.getNameAsIdentifier(), name);
// }
//
// /**
// * This static method goes on the aspect that declares the inter-type field
// */
// public static String classFieldGetDispatcher(UnresolvedType aspectType, UnresolvedType classType, String name)
// {
// return makeName(
// "interFieldGetDispatch",
// aspectType.getNameAsIdentifier(),
// classType.getNameAsIdentifier(),
// name);
// }
/**
* This static void method goes on the aspect that declares the inter-type field and is called from the appropriate place
* (target's initializer, or clinit, or topmost implementer's inits), to initialize the field;
*/
public static String interFieldInitializer(UnresolvedType aspectType, UnresolvedType classType, String name) {
return makeName("interFieldInit", aspectType.getNameAsIdentifier(), classType.getNameAsIdentifier(), name);
}
// ----
/**
* This method goes on the target type of the inter-type method. (and possibly the topmost-implemeters, if the target type is an
* interface)
*/
public static String interMethod(int modifiers, UnresolvedType aspectType, UnresolvedType classType, String name) {
if (Modifier.isPublic(modifiers)) {
return name;
}
// ??? might want to handle case where aspect and class are in same package similar to public
return makeName("interMethodDispatch2", makeVisibilityName(modifiers, aspectType), name);
}
/**
* This static method goes on the declaring aspect of the inter-type method.
*/
public static String interMethodDispatcher(UnresolvedType aspectType, UnresolvedType classType, String name) {
return makeName("interMethodDispatch1", aspectType.getNameAsIdentifier(), classType.getNameAsIdentifier(), name);
}
/**
* This static method goes on the declaring aspect of the inter-type method.
*/
public static String interMethodBody(UnresolvedType aspectType, UnresolvedType classType, String name) {
return makeName("interMethod", aspectType.getNameAsIdentifier(), classType.getNameAsIdentifier(), name);
}
// ----
/**
* This static method goes on the declaring aspect of the inter-type constructor.
*/
public static String preIntroducedConstructor(UnresolvedType aspectType, UnresolvedType targetType) {
return makeName("preInterConstructor", aspectType.getNameAsIdentifier(), targetType.getNameAsIdentifier());
}
/**
* This static method goes on the declaring aspect of the inter-type constructor.
*/
public static String postIntroducedConstructor(UnresolvedType aspectType, UnresolvedType targetType) {
return makeName("postInterConstructor", aspectType.getNameAsIdentifier(), targetType.getNameAsIdentifier());
}
// ----
/**
* This static method goes on the target class of the inter-type method.
*/
public static String superDispatchMethod(UnresolvedType classType, String name) {
return makeName("superDispatch", classType.getNameAsIdentifier(), name);
}
/**
* This static method goes on the target class of the inter-type method.
*/
public static String protectedDispatchMethod(UnresolvedType classType, String name) {
return makeName("protectedDispatch", classType.getNameAsIdentifier(), name);
}
// ----
private static String makeVisibilityName(int modifiers, UnresolvedType aspectType) {
if (Modifier.isPrivate(modifiers)) {
return aspectType.getOutermostType().getNameAsIdentifier();
} else if (Modifier.isProtected(modifiers)) {
throw new RuntimeException("protected inter-types not allowed");
} else if (Modifier.isPublic(modifiers)) {
return "";
} else {
return aspectType.getPackageNameAsIdentifier();
}
}
private static String makeName(String s1, String s2) {
return "ajc$" + s1 + "$" + s2;
}
public static String makeName(String s1, String s2, String s3) {
return "ajc$" + s1 + "$" + s2 + "$" + s3;
}
public static String makeName(String s1, String s2, String s3, String s4) {
return "ajc$" + s1 + "$" + s2 + "$" + s3 + "$" + s4;
}
public static String cflowStack(CrosscuttingMembers xcut) {
return makeName("cflowStack", Integer.toHexString(xcut.getCflowEntries().size()));
}
public static String cflowCounter(CrosscuttingMembers xcut) {
return makeName("cflowCounter", Integer.toHexString(xcut.getCflowEntries().size()));
}
public static String makeClosureClassName(UnresolvedType enclosingType, String suffix) {
return enclosingType.getName() + "$AjcClosure" + suffix;
}
public static String aroundShadowMethodName(Member shadowSig, String suffixTag) {
StringBuffer ret = new StringBuffer();
ret.append(getExtractableName(shadowSig)).append("_aroundBody").append(suffixTag);
return ret.toString();
}
public static String aroundAdviceMethodName(Member shadowSig, String suffixTag) {
StringBuffer ret = new StringBuffer();
ret.append(getExtractableName(shadowSig)).append("_aroundBody").append(suffixTag).append("$advice");
return ret.toString();
}
public static String getExtractableName(Member shadowSignature) {
String name = shadowSignature.getName();
MemberKind kind = shadowSignature.getKind();
if (kind == Member.CONSTRUCTOR) {
return "init$";
} else if (kind == Member.STATIC_INITIALIZATION) {
return "clinit$";
} else {
return name;
}
}
public static String proceedMethodName(String adviceMethodName) {
return adviceMethodName + "proceed";
}
}