From 9c1e8c788a7b5f3856e65815e67bd9209a90ac32 Mon Sep 17 00:00:00 2001
From: aclement <aclement>
Date: Mon, 9 Mar 2009 22:09:12 +0000
Subject: [PATCH] declareMixin

---
 .../aspectj/weaver/bcel/BcelTypeMunger.java   | 52 +++++++++++++------
 .../org/aspectj/weaver/bcel/BcelWeaver.java   |  5 +-
 2 files changed, 40 insertions(+), 17 deletions(-)

diff --git a/weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java b/weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java
index eb3c1dd8d..c6c54d516 100644
--- a/weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java
+++ b/weaver/src/org/aspectj/weaver/bcel/BcelTypeMunger.java
@@ -135,25 +135,31 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
 			String fName = getShortname(getAspectType().getSourceLocation().getSourceFile().getPath());
 			if (munger.getKind().equals(ResolvedTypeMunger.Parent)) {
 				// This message could come out of AjLookupEnvironment.addParent
-				// if doing parents
-				// munging at compile time only...
+				// if doing parents munging at compile time only...
 				NewParentTypeMunger parentTM = (NewParentTypeMunger) munger;
-				if (parentTM.getNewParent().isInterface()) {
+				if (parentTM.isMixin()) {
 					weaver.getWorld().getMessageHandler().handleMessage(
-							WeaveMessage.constructWeavingMessage(WeaveMessage.WEAVEMESSAGE_DECLAREPARENTSIMPLEMENTS,
-									new String[] { weaver.getLazyClassGen().getType().getName(), tName,
-											parentTM.getNewParent().getName(), fName }, weaver.getLazyClassGen().getClassName(),
-									getAspectType().getName()));
+							WeaveMessage.constructWeavingMessage(WeaveMessage.WEAVEMESSAGE_MIXIN,
+									new String[] { parentTM.getNewParent().getName(), fName,
+											weaver.getLazyClassGen().getType().getName(), tName }, weaver.getLazyClassGen()
+											.getClassName(), getAspectType().getName()));
 				} else {
-					weaver.getWorld().getMessageHandler().handleMessage(
-							WeaveMessage
-									.constructWeavingMessage(WeaveMessage.WEAVEMESSAGE_DECLAREPARENTSEXTENDS, new String[] {
-											weaver.getLazyClassGen().getType().getName(), tName, parentTM.getNewParent().getName(),
-											fName }));
-					// TAG: WeavingMessage DECLARE PARENTS: EXTENDS
-					// reportDeclareParentsMessage(WeaveMessage.
-					// WEAVEMESSAGE_DECLAREPARENTSEXTENDS,sourceType,parent);
+					if (parentTM.getNewParent().isInterface()) {
+						weaver.getWorld().getMessageHandler().handleMessage(
+								WeaveMessage.constructWeavingMessage(WeaveMessage.WEAVEMESSAGE_DECLAREPARENTSIMPLEMENTS,
+										new String[] { weaver.getLazyClassGen().getType().getName(), tName,
+												parentTM.getNewParent().getName(), fName },
+										weaver.getLazyClassGen().getClassName(), getAspectType().getName()));
+					} else {
+						weaver.getWorld().getMessageHandler().handleMessage(
+								WeaveMessage.constructWeavingMessage(WeaveMessage.WEAVEMESSAGE_DECLAREPARENTSEXTENDS, new String[] {
+										weaver.getLazyClassGen().getType().getName(), tName, parentTM.getNewParent().getName(),
+										fName }));
+						// TAG: WeavingMessage DECLARE PARENTS: EXTENDS
+						// reportDeclareParentsMessage(WeaveMessage.
+						// WEAVEMESSAGE_DECLAREPARENTSEXTENDS,sourceType,parent);
 
+					}
 				}
 			} else if (munger.getKind().equals(ResolvedTypeMunger.FieldHost)) {
 				// hidden
@@ -1140,7 +1146,7 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
 	 * @param unMangledInterMethod the method to bridge 'to' that we have already created in the 'subtype'
 	 * @param clazz the class in which to put the bridge method
 	 * @param paramTypes Parameter types for the bridge method, passed in as an optimization since the caller is likely to have
-	 *            already created them.
+	 *        already created them.
 	 * @param theBridgeMethod
 	 */
 	private void createBridgeMethod(BcelWorld world, NewMethodTypeMunger munger, ResolvedMember unMangledInterMethod,
@@ -1312,6 +1318,15 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
 			if (munger.specifiesDelegateFactoryMethod()) {
 				ResolvedMember rm = munger.getDelegateFactoryMethod(weaver.getWorld());
 
+				// Check the method parameter is compatible with the type of the instance to be passed
+				if (rm.getArity() != 0) {
+					ResolvedType parameterType = rm.getParameterTypes()[0].resolve(weaver.getWorld());
+					if (!parameterType.isAssignableFrom(weaver.getLazyClassGen().getType())) {
+						signalError("For mixin factory method '" + rm + "': Instance type '" + weaver.getLazyClassGen().getType()
+								+ "' is not compatible with factory parameter type '" + parameterType + "'", weaver);
+						return false;
+					}
+				}
 				if (rm.isStatic()) {
 					if (rm.getArity() != 0) {
 						body.append(InstructionConstants.ALOAD_0);
@@ -1476,6 +1491,11 @@ public class BcelTypeMunger extends ConcreteTypeMunger {
 		weaver.getWorld().getMessageHandler().handleMessage(msg);
 	}
 
+	private void signalError(String msgString, BcelClassWeaver weaver) {
+		IMessage msg = MessageUtil.error(msgString, getSourceLocation());
+		weaver.getWorld().getMessageHandler().handleMessage(msg);
+	}
+
 	private boolean mungeNewConstructor(BcelClassWeaver weaver, NewConstructorTypeMunger newConstructorTypeMunger) {
 
 		final LazyClassGen currentClass = weaver.getLazyClassGen();
diff --git a/weaver/src/org/aspectj/weaver/bcel/BcelWeaver.java b/weaver/src/org/aspectj/weaver/bcel/BcelWeaver.java
index 44f4713fa..5fee7ed95 100644
--- a/weaver/src/org/aspectj/weaver/bcel/BcelWeaver.java
+++ b/weaver/src/org/aspectj/weaver/bcel/BcelWeaver.java
@@ -1666,7 +1666,10 @@ public class BcelWeaver {
 				// BcelTypeMunger.mungeNewParent()
 				// classType.addParent(newParent);
 				onType.addParent(newParent);
-				ResolvedTypeMunger newParentMunger = new NewParentTypeMunger(newParent);
+				NewParentTypeMunger newParentMunger = new NewParentTypeMunger(newParent);
+				if (p.isMixin()) {
+					newParentMunger.setIsMixin(true);
+				}
 				newParentMunger.setSourceLocation(p.getSourceLocation());
 				onType.addInterTypeMunger(new BcelTypeMunger(newParentMunger, xcutSet.findAspectDeclaringParents(p)));
 			}
-- 
2.39.5