/*******************************************************************************
 * Copyright (c) 2000, 2010 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *     Nieraj Singh
 *******************************************************************************/
package org.aspectj.org.eclipse.jdt.core.dom;

public class AjASTMatcher extends ASTMatcher {

	/**
	 * Creates a new AST matcher instance.
	 * <p>
	 * For backwards compatibility, the matcher ignores tag elements below doc comments by default. Use {@link #AjASTMatcher(boolean)
	 * AjASTMatcher(true)} for a matcher that compares doc tags by default.
	 * </p>
	 */
	public AjASTMatcher() {
		this(false);
	}

	/**
	 * Creates a new AST matcher instance.
	 * 
	 * @param matchDocTags <code>true</code> if doc comment tags are to be compared by default, and <code>false</code> otherwise
	 * @see #match(Javadoc,Object)
	 * @since 3.0
	 */
	public AjASTMatcher(boolean matchDocTags) {
		super(matchDocTags);
	}

	public boolean match(PointcutDeclaration node, Object other) {
		// ajh02: method added
		if (!(other instanceof PointcutDeclaration)) {
			return false;
		}
		PointcutDeclaration o = (PointcutDeclaration) other;
		int level = node.getAST().apiLevel;
		if (level == AST.JLS2_INTERNAL) {
			if (node.getModifiers() != o.getModifiers()) {
				return false;
			}
		}
		if (level >= AST.JLS3) {
			if (!safeSubtreeListMatch(node.modifiers(), o.modifiers())) {
				return false;
			}
		}
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc()) && safeSubtreeMatch(node.getName(), o.getName())
				&& safeSubtreeMatch(node.getDesignator(), o.getDesignator());
	}

	public boolean match(DefaultPointcut node, Object other) {
		if (!(other instanceof DefaultPointcut)) {
			return false;
		}
		return node.getDetail().equals(((DefaultPointcut) other).getDetail());
	}

	public boolean match(ReferencePointcut node, Object other) {
		if (!(other instanceof ReferencePointcut)) {
			return false;
		}
		ReferencePointcut o = (ReferencePointcut) other;
		// int level = node.getAST().apiLevel;
		return safeSubtreeMatch(node.getName(), o.getName());
		// ajh02: will have to add something here when ReferencePointcuts are given
		// a list of Types for parameters
	}

	public boolean match(NotPointcut node, Object other) {
		if (!(other instanceof NotPointcut)) {
			return false;
		}
		NotPointcut o = (NotPointcut) other;
		return safeSubtreeMatch(node.getBody(), o.getBody());
	}

	public boolean match(PerObject node, Object other) {
		if (!(other instanceof PerObject)) {
			return false;
		}
		PerObject o = (PerObject) other;
		return safeSubtreeMatch(node.getBody(), o.getBody()) && o.isThis() == node.isThis();
	}

	public boolean match(PerCflow node, Object other) {
		if (!(other instanceof PerCflow)) {
			return false;
		}
		PerCflow o = (PerCflow) other;
		return safeSubtreeMatch(node.getBody(), o.getBody()) && node.isBelow() == o.isBelow();
	}

	public boolean match(PerTypeWithin node, Object other) {
		if (!(other instanceof PerTypeWithin)) {
			return false;
		}
		// PerTypeWithin o = (PerTypeWithin) other;
		return true; // ajh02: stub, should look at the type pattern
	}

	public boolean match(CflowPointcut node, Object other) {
		if (!(other instanceof CflowPointcut)) {
			return false;
		}
		CflowPointcut o = (CflowPointcut) other;
		return safeSubtreeMatch(node.getBody(), o.getBody());
	}

	public boolean match(AndPointcut node, Object other) {
		if (!(other instanceof AndPointcut)) {
			return false;
		}
		AndPointcut o = (AndPointcut) other;
		return safeSubtreeMatch(node.getLeft(), o.getLeft()) && safeSubtreeMatch(node.getRight(), o.getRight());
	}

	public boolean match(OrPointcut node, Object other) {
		if (!(other instanceof OrPointcut)) {
			return false;
		}
		OrPointcut o = (OrPointcut) other;
		return safeSubtreeMatch(node.getLeft(), o.getLeft()) && safeSubtreeMatch(node.getRight(), o.getRight());
	}

	public boolean match(BeforeAdviceDeclaration node, Object other) {
		// ajh02: method added
		if (!(other instanceof BeforeAdviceDeclaration)) {
			return false;
		}
		BeforeAdviceDeclaration o = (BeforeAdviceDeclaration) other;
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc()) && safeSubtreeListMatch(node.parameters(), o.parameters())
				&& safeSubtreeMatch(node.getPointcut(), o.getPointcut())
				&& safeSubtreeListMatch(node.thrownExceptions(), o.thrownExceptions())
				&& safeSubtreeMatch(node.getBody(), o.getBody());
	}

	public boolean match(AfterAdviceDeclaration node, Object other) {
		// ajh02: todo: should have special methods to match
		// afterReturning and afterThrowing
		if (!(other instanceof AfterAdviceDeclaration)) {
			return false;
		}
		AfterAdviceDeclaration o = (AfterAdviceDeclaration) other;
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc()) && safeSubtreeListMatch(node.parameters(), o.parameters())
				&& safeSubtreeMatch(node.getPointcut(), o.getPointcut())
				&& safeSubtreeListMatch(node.thrownExceptions(), o.thrownExceptions())
				&& safeSubtreeMatch(node.getBody(), o.getBody());
	}

	public boolean match(AroundAdviceDeclaration node, Object other) {
		if (!(other instanceof AroundAdviceDeclaration)) {
			return false;
		}
		AroundAdviceDeclaration o = (AroundAdviceDeclaration) other;
		int level = node.getAST().apiLevel;
		if (level == AST.JLS2_INTERNAL) {
			if (!safeSubtreeMatch(node.internalGetReturnType(), o.internalGetReturnType())) {
				return false;
			}
		}
		if (level >= AST.JLS3) {
			if (!safeSubtreeMatch(node.getReturnType2(), o.getReturnType2())) {
				return false;
			}
			if (!safeSubtreeListMatch(node.typeParameters(), o.typeParameters())) {
				return false;
			}
		}
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc()) && safeSubtreeListMatch(node.parameters(), o.parameters())
				&& safeSubtreeMatch(node.getPointcut(), o.getPointcut())
				&& safeSubtreeListMatch(node.thrownExceptions(), o.thrownExceptions())
				&& safeSubtreeMatch(node.getBody(), o.getBody());
	}

	public boolean match(DeclareDeclaration node, Object other) {
		// ajh02: method added
		if (!(other instanceof DeclareDeclaration)) {
			return false;
		}
		DeclareDeclaration o = (DeclareDeclaration) other;
		// int level = node.getAST().apiLevel;
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc());
	}

	public boolean match(InterTypeFieldDeclaration node, Object other) {
		// ajh02: method added
		if (!(other instanceof InterTypeFieldDeclaration)) {
			return false;
		}
		InterTypeFieldDeclaration o = (InterTypeFieldDeclaration) other;
		int level = node.getAST().apiLevel;
		if (level == AST.JLS2_INTERNAL) {
			if (node.getModifiers() != o.getModifiers()) {
				return false;
			}
		}
		if (level >= AST.JLS3) {
			if (!safeSubtreeListMatch(node.modifiers(), o.modifiers())) {
				return false;
			}
		}
		return safeSubtreeMatch(node.getJavadoc(), o.getJavadoc()) && safeSubtreeMatch(node.getType(), o.getType())
				&& safeSubtreeListMatch(node.fragments(), o.fragments());
	}

	public boolean match(InterTypeMethodDeclaration node, Object other) {
		// ajh02: method added
		if (!(other instanceof InterTypeMethodDeclaration)) {
			return false;
		}
		InterTypeMethodDeclaration o = (InterTypeMethodDeclaration) other;
		int level = node.getAST().apiLevel;
		if (level == AST.JLS2_INTERNAL) {
			if (node.getModifiers() != o.getModifiers()) {
				return false;
			}
			if (!safeSubtreeMatch(node.internalGetReturnType(), o.internalGetReturnType())) {
				return false;
			}
		}
		if (level >= AST.JLS3) {
			if (!safeSubtreeListMatch(node.modifiers(), o.modifiers())) {
				return false;
			}
			if (!safeSubtreeMatch(node.getReturnType2(), o.getReturnType2())) {
				return false;
			}
			// n.b. compare type parameters even for constructors
			if (!safeSubtreeListMatch(node.typeParameters(), o.typeParameters())) {
				return false;
			}
		}
		return ((node.isConstructor() == o.isConstructor()) && safeSubtreeMatch(node.getJavadoc(), o.getJavadoc())
				&& safeSubtreeMatch(node.getName(), o.getName())
				// n.b. compare return type even for constructors
				&& safeSubtreeListMatch(node.parameters(), o.parameters()) && node.getExtraDimensions() == o.getExtraDimensions()
				&& safeSubtreeListMatch(node.thrownExceptions(), o.thrownExceptions()) && safeSubtreeMatch(node.getBody(), o
				.getBody()));
	}

	public boolean match(DefaultTypePattern node, Object other) {
		if (!(other instanceof DefaultTypePattern)) {
			return false;
		}
		return node.getDetail().equals(((DefaultTypePattern) other).getDetail());
	}

	public boolean match(SignaturePattern node, Object other) {
		if (!(other instanceof SignaturePattern)) {
			return false;
		}
		return node.getDetail().equals(((SignaturePattern) other).getDetail());
	}

	public boolean match(AndTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof AndTypePattern)) {
			return false;
		}
		AndTypePattern otherBoolean = (AndTypePattern) other;
		return safeSubtreeMatch(node.getLeft(), otherBoolean.getLeft())
				&& safeSubtreeMatch(node.getRight(), otherBoolean.getRight());
	}

	public boolean match(OrTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof OrTypePattern)) {
			return false;
		}
		OrTypePattern otherBoolean = (OrTypePattern) other;
		return safeSubtreeMatch(node.getLeft(), otherBoolean.getLeft())
				&& safeSubtreeMatch(node.getRight(), otherBoolean.getRight());
	}

	public boolean match(AnyTypePattern node, Object other) {
		// AnyTypePattern nodes don't hold state aside from the AST, so just do a reference check
		if (node == other) {
			return true;
		}
		return false;
	}

	public boolean match(AnyWithAnnotationTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof AnyWithAnnotationTypePattern)) {
			return false;
		}
		// For now only do an expression matching. In future versions, when
		// the node supports AnnotationTypes, this may have to be changed
		return node.getTypePatternExpression().equals(
				((AnyWithAnnotationTypePattern) other)
						.getTypePatternExpression());
	}

	public boolean match(EllipsisTypePattern node, Object other) {
		// Ellipsis nodes don't hold state aside from the AST, so just do a reference check
		if (node == other) {
			return true;
		}
		return false;
	}

	public boolean match(NotTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof NotTypePattern)) {
			return false;
		}
		return safeSubtreeMatch(node.getNegatedTypePattern(),
				((NotTypePattern) other).getNegatedTypePattern());
	}

	public boolean match(NoTypePattern node, Object other) {
		// NoTypePattern nodes don't hold state aside from the AST, so just do a reference check
		if (node == other) {
			return true;
		}
		return false;
	}

	public boolean match(HasMemberTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof HasMemberTypePattern)) {
			return false;
		}
		return safeSubtreeMatch(node.getSignaturePattern(),
				((HasMemberTypePattern) other).getSignaturePattern());
	}

	public boolean match(IdentifierTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof IdentifierTypePattern)) {
			return false;
		}
		return safeSubtreeMatch(node.getType(),
				((IdentifierTypePattern) other).getType());
	}

	public boolean match(TypeCategoryTypePattern node, Object other) {
		if (node == other) {
			return true;
		}
		if (!(other instanceof TypeCategoryTypePattern)) {
			return false;
		}
		return node.getTypeCategory() == ((TypeCategoryTypePattern) other)
				.getTypeCategory();
	}

	public boolean match(Type type, Object other) {
		if (type == other) {
			return true;
		}
		// For now only support simple type/simple name matching. Support for
		// other types
		// may have to be added here
		if (type instanceof SimpleType && other instanceof SimpleType) {
			Name name = ((SimpleType) type).getName();
			Name otherName = ((SimpleType) other).getName();
			if (name instanceof SimpleName && otherName instanceof SimpleName) {
				return ((SimpleName) name).getIdentifier().equals(
						((SimpleName) otherName).getIdentifier());
			}
		}
		return false;
	}
}