support for hasmember / hasfield type patterns. currently disabled via static final boolean flag in PatternParser. If re-enabling, see HasMemberTests class and don't forget to figure out behaviour wrt. itds!

weaver/src/org/aspectj/weaver/patterns/AbstractPatternNodeVisitor.java

@@ -404,4 +404,8 @@ public abstract class AbstractPatternNodeVisitor implements PatternNodeVisitor {
 	public Object visit(TypeVariablePatternList node, Object data) {
 		return node;
 	}
+	
+	public Object visit(HasMemberTypePattern node, Object data) {
+		return node;
+	}
 }

weaver/src/org/aspectj/weaver/patterns/HasMemberTypePattern.java

@@ -0,0 +1,151 @@
+/* *******************************************************************
+ * Copyright (c) 2005 Contributors.
+ * 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://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: 
+ *   Adrian Colyer			Initial implementation
+ * ******************************************************************/
+package org.aspectj.weaver.patterns;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Modifier;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import org.aspectj.util.FuzzyBoolean;
+import org.aspectj.weaver.ConcreteTypeMunger;
+import org.aspectj.weaver.ISourceContext;
+import org.aspectj.weaver.Member;
+import org.aspectj.weaver.ResolvedType;
+import org.aspectj.weaver.VersionedDataInputStream;
+import org.aspectj.weaver.World;
+
+/**
+ * @author colyer
+ * Matches types that have a certain method / constructor / field
+ * Currently only allowed within declare parents and declare @type
+ */
+public class HasMemberTypePattern extends TypePattern {
+
+	private SignaturePattern signaturePattern;
+	
+	public HasMemberTypePattern(SignaturePattern aSignaturePattern) {
+		super(false,false);
+		this.signaturePattern = aSignaturePattern;
+	}
+
+	protected boolean matchesExactly(ResolvedType type) {
+		if (signaturePattern.getKind() == Member.FIELD) {
+			return hasField(type);
+		} else {
+			return hasMethod(type);
+		}
+	}
+
+	private boolean hasField(ResolvedType type) {
+		// TODO what about ITDs
+		World world = type.getWorld();
+		for (Iterator iter = type.getFields(); iter.hasNext();) {
+			Member field = (Member) iter.next();
+			if (signaturePattern.matches(field, type.getWorld(), false)) {
+				if (field.getDeclaringType().resolve(world) != type) {
+					if (Modifier.isPrivate(field.getModifiers())) continue;
+				}
+				return true;
+			}
+		}
+		return false;
+	}
+	
+	private boolean hasMethod(ResolvedType type) {
+		// TODO what about ITDs
+		World world = type.getWorld();
+		for (Iterator iter = type.getMethods(); iter.hasNext();) {
+			Member method = (Member) iter.next();
+			if (signaturePattern.matches(method, type.getWorld(), false)) {
+				if (method.getDeclaringType().resolve(world) != type) {
+					if (Modifier.isPrivate(method.getModifiers())) continue;
+				}
+				return true;
+			}
+		}
+		// try itds before we give up
+		List mungers = type.getInterTypeMungersIncludingSupers();
+		for (Iterator iter = mungers.iterator(); iter.hasNext();) {
+			ConcreteTypeMunger munger = (ConcreteTypeMunger) iter.next();
+			Member member = munger.getSignature();
+			if (signaturePattern.matches(member, type.getWorld(), false)) {
+				if (!Modifier.isPublic(member.getModifiers())) continue;
+				return true;
+			}
+		}
+		return false;
+	}
+	
+	protected boolean matchesExactly(ResolvedType type, ResolvedType annotatedType) {
+		return matchesExactly(type);
+	}
+
+	public FuzzyBoolean matchesInstanceof(ResolvedType type) {
+		throw new UnsupportedOperationException("hasmethod/field do not support instanceof matching");
+	}
+
+	public FuzzyBoolean matchesInstanceof(Class toMatch) {
+		return FuzzyBoolean.NO;
+	}
+
+	protected boolean matchesExactly(Class toMatch) {
+		return false;
+	}
+
+	public TypePattern parameterizeWith(Map typeVariableMap) {
+		HasMemberTypePattern ret = new HasMemberTypePattern(signaturePattern.parameterizeWith(typeVariableMap));
+		ret.copyLocationFrom(this);
+		return ret;
+	}
+
+	public boolean equals(Object obj) {
+		if (!(obj instanceof HasMemberTypePattern)) return false;
+		if (this == obj) return true;
+		return signaturePattern.equals(((HasMemberTypePattern)obj).signaturePattern);
+	}
+	
+	public int hashCode() {
+		return signaturePattern.hashCode();
+	}
+	
+	public String toString() {
+		StringBuffer buff = new StringBuffer();
+		if (signaturePattern.getKind() == Member.FIELD) {
+			buff.append("hasfield(");
+		} else {
+			buff.append("hasmethod(");
+		}
+		buff.append(signaturePattern.toString());
+		buff.append(")");
+		return buff.toString();
+	}
+	
+	public void write(DataOutputStream s) throws IOException {
+		s.writeByte(TypePattern.HAS_MEMBER);
+		signaturePattern.write(s);
+		writeLocation(s);
+	}
+
+	public static TypePattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
+		SignaturePattern sp = SignaturePattern.read(s, context);
+		HasMemberTypePattern ret = new HasMemberTypePattern(sp);
+		ret.readLocation(context,s);
+		return ret;
+	}
+	
+	public Object accept(PatternNodeVisitor visitor, Object data) {
+		return visitor.visit(this, data);
+	}
+
+}

weaver/src/org/aspectj/weaver/patterns/HasMemberTypePatternFinder.java

@@ -0,0 +1,33 @@
+/* *******************************************************************
+ * Copyright (c) 2005 Contributors.
+ * 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://eclipse.org/legal/epl-v10.html 
+ *  
+ * Contributors: 
+ *   Adrian Colyer			Initial implementation
+ * ******************************************************************/
+package org.aspectj.weaver.patterns;
+
+/**
+ * @author colyer
+ * usage : new HasMemberTypePatternFinder(pattern).hasMemberTypePattern()
+ */
+public class HasMemberTypePatternFinder extends AbstractPatternNodeVisitor {
+	
+	private boolean hasMemberTypePattern = false;
+	
+	public HasMemberTypePatternFinder(TypePattern aPattern) {
+		aPattern.traverse(this, null);
+	}
+	
+	public Object visit(HasMemberTypePattern node, Object data) {
+		hasMemberTypePattern = true;
+		return null;
+	}
+	
+	public boolean hasMemberTypePattern() { return hasMemberTypePattern; }
+
+}

weaver/src/org/aspectj/weaver/patterns/IdentityPointcutVisitor.java

@@ -239,4 +239,8 @@ public class IdentityPointcutVisitor implements PatternNodeVisitor {
 	public Object visit(TypeVariablePatternList node, Object data) {
 		return node;
 	}
+	
+	public Object visit(HasMemberTypePattern node, Object data) {
+		return node;
+	}
 }

weaver/src/org/aspectj/weaver/patterns/PatternNodeVisitor.java

@@ -44,6 +44,7 @@ public interface PatternNodeVisitor {
     Object visit(OrTypePattern node, Object data);
     Object visit(WildTypePattern node, Object data);
     Object visit(TypePatternList node, Object data);
+    Object visit(HasMemberTypePattern node, Object data);
 
     // Pointcuts
 	Object visit(AndPointcut node, Object data);
@@ -559,6 +560,11 @@ public interface PatternNodeVisitor {
 			return null;
 		}
 
+		public Object visit(HasMemberTypePattern node, Object data) {
+			append(node);
+			return null;
+		}
+
         public static void check(String s) {
             check(Pointcut.fromString(s), false);
         }

weaver/src/org/aspectj/weaver/patterns/PatternParser.java

@@ -28,6 +28,10 @@ public class PatternParser {
 		
 	private ITokenSource tokenSource;	
 	private ISourceContext sourceContext;
+	
+	private static final boolean HASMEMBER_PATTERNS_ENABLED = false;
+	/** not thread-safe, but this class is not intended to be... */
+	private boolean allowHasTypePatterns = false;
 
 	/**
 	 * Constructor for PatternParser.
@@ -154,7 +158,10 @@ public class PatternParser {
 	}
 	
 	public DeclareAnnotation parseDeclareAtType() {
-		return new DeclareAnnotation(DeclareAnnotation.AT_TYPE,parseTypePattern());
+		if (HASMEMBER_PATTERNS_ENABLED) allowHasTypePatterns = true;
+		TypePattern p = parseTypePattern();
+		allowHasTypePatterns = false;
+		return new DeclareAnnotation(DeclareAnnotation.AT_TYPE,p);
 	}
 
 	public DeclareAnnotation parseDeclareAtMethod(boolean isMethod) {
@@ -189,7 +196,9 @@ public class PatternParser {
 		 * String[] typeParameters = maybeParseSimpleTypeVariableList();
 		 */
 		eat(":");
+		if (HASMEMBER_PATTERNS_ENABLED) allowHasTypePatterns = true;
 		TypePattern p = parseTypePattern(false);
+		allowHasTypePatterns = false;
 		IToken t = tokenSource.next();
 		if (!(t.getString().equals("extends") || t.getString().equals("implements"))) {
 			throw new ParserException("extends or implements", t);
@@ -678,6 +687,10 @@ public class PatternParser {
 	
 	public TypePattern parseSingleTypePattern(boolean insideTypeParameters) {
 		if (insideTypeParameters && maybeEat("?")) return parseGenericsWildcardTypePattern();
+		if (allowHasTypePatterns) {
+			if (maybeEatIdentifier("hasmethod")) return parseHasMethodTypePattern();
+			if (maybeEatIdentifier("hasfield")) return parseHasFieldTypePattern();
+		}
 		
 		List names = parseDottedNamePattern(); 
 		
@@ -707,6 +720,28 @@ public class PatternParser {
 		return new WildTypePattern(names, includeSubtypes, dim+(isVarArgs?1:0), endPos,isVarArgs,typeParameters);
 	}
 	
+	public TypePattern parseHasMethodTypePattern() {
+		int startPos = tokenSource.peek(-1).getStart();
+		eat("(");
+		SignaturePattern sp = parseMethodOrConstructorSignaturePattern();
+		eat(")");
+	    int endPos = tokenSource.peek(-1).getEnd();
+		HasMemberTypePattern ret = new HasMemberTypePattern(sp);
+		ret.setLocation(sourceContext, startPos, endPos);
+		return ret;
+	}
+	
+	public TypePattern parseHasFieldTypePattern() {
+		int startPos = tokenSource.peek(-1).getStart();
+		eat("(");
+		SignaturePattern sp = parseFieldSignaturePattern();
+		eat(")");
+	    int endPos = tokenSource.peek(-1).getEnd();
+		HasMemberTypePattern ret = new HasMemberTypePattern(sp);
+		ret.setLocation(sourceContext, startPos, endPos);
+		return ret;
+	}
+	
 	public TypePattern parseGenericsWildcardTypePattern() {
 		List names = new ArrayList();
 		names.add(new NamePattern("?"));

weaver/src/org/aspectj/weaver/patterns/TypePattern.java

@@ -328,6 +328,7 @@ public abstract class TypePattern extends PatternNode {
 	public static final byte AND = 8;
 	public static final byte NO_KEY = 9;
 	public static final byte ANY_WITH_ANNO = 10;
+	public static final byte HAS_MEMBER = 11;
 
 	public static TypePattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
 		byte key = s.readByte();
@@ -342,6 +343,7 @@ public abstract class TypePattern extends PatternNode {
 			case OR: return OrTypePattern.read(s, context);
 			case AND: return AndTypePattern.read(s, context);
 			case ANY_WITH_ANNO: return AnyWithAnnotationTypePattern.read(s,context);
+			case HAS_MEMBER: return HasMemberTypePattern.read(s,context);
 		}
 		throw new BCException("unknown TypePattern kind: " + key);
 	}