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AttributeSet.javaAPI DocJava SE 5 API7346Fri Aug 26 14:55:34 BST 2005com.sun.org.apache.xalan.internal.xsltc.compiler

AttributeSet

public final class AttributeSet extends TopLevelElement
author
Jacek Ambroziak
author
Santiago Pericas-Geertsen
author
Morten Jorgensen

Fields Summary
private static final String
AttributeSetPrefix
private QName
_name
private UseAttributeSets
_useSets
private AttributeSet
_mergeSet
private String
_method
private boolean
_ignore
Constructors Summary
Methods Summary
public java.lang.StringgetMethodName()
Returns the method name of this attribute set. This method name is generated by the compiler (XSLTC)

	return _method;
    
public com.sun.org.apache.xalan.internal.xsltc.compiler.QNamegetName()
Returns the QName of this attribute set

    
                
       
	return _name;
    
public voidignore()
Call this method to prevent a method for being compiled for this set. This is used in case several elements constitute a single set (with one name). The last element will merge itself with any previous set(s) with the same name and disable the other set(s).

	_ignore = true;
    
public voidparseContents(com.sun.org.apache.xalan.internal.xsltc.compiler.Parser parser)
Parse the contents of this attribute set. Recognised attributes are "name" (required) and "use-attribute-sets" (optional).

	
	// Get this attribute set's name
        final String name = getAttribute("name");
        
        if (!XMLChar.isValidQName(name)) {
            ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, name, this);
            parser.reportError(Constants.ERROR, err);           
        }        
        _name = parser.getQNameIgnoreDefaultNs(name);
	if ((_name == null) || (_name.equals(EMPTYSTRING))) {
	    ErrorMsg msg = new ErrorMsg(ErrorMsg.UNNAMED_ATTRIBSET_ERR, this);
	    parser.reportError(Constants.ERROR, msg);
	}

	// Get any included attribute sets (similar to inheritance...)
	final String useSets = getAttribute("use-attribute-sets");
	if (useSets.length() > 0) {
            if (!Util.isValidQNames(useSets)) {
                ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_QNAME_ERR, useSets, this);
                parser.reportError(Constants.ERROR, err);	
            }		
	    _useSets = new UseAttributeSets(useSets, parser);
	}

	// Parse the contents of this node. All child elements must be
	// <xsl:attribute> elements. Other elements cause an error.
	final Vector contents = getContents();
	final int count = contents.size();
	for (int i=0; i<count; i++) {
	    SyntaxTreeNode child = (SyntaxTreeNode)contents.elementAt(i);
	    if (child instanceof XslAttribute) {
		parser.getSymbolTable().setCurrentNode(child);
		child.parseContents(parser);
	    }
	    else if (child instanceof Text) {
		// ignore
	    }
	    else {
		ErrorMsg msg = new ErrorMsg(ErrorMsg.ILLEGAL_CHILD_ERR, this);
		parser.reportError(Constants.ERROR, msg);
	    }
	}

	// Point the symbol table back at us...
	parser.getSymbolTable().setCurrentNode(this);
    
public java.lang.StringtoString()

	StringBuffer buf = new StringBuffer("attribute-set: ");
	// Translate all local attributes
	final Enumeration attributes = elements();
	while (attributes.hasMoreElements()) {
	    final XslAttribute attribute =
		(XslAttribute)attributes.nextElement();
	    buf.append(attribute);
	}
	return(buf.toString());
    
public voidtranslate(com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator classGen, com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator methodGen)
Compile a method that outputs the attributes in this set


	if (_ignore) return;

	// Create a new method generator for an attribute set method
	methodGen = new AttributeSetMethodGenerator(_method, classGen);

        // Generate a reference to previous attribute-set definitions with the
        // same name first.  Those later in the stylesheet take precedence.
        if (_mergeSet != null) {
            final ConstantPoolGen cpg = classGen.getConstantPool();
            final InstructionList il = methodGen.getInstructionList();
            final String methodName = _mergeSet.getMethodName();

            il.append(classGen.loadTranslet());
            il.append(methodGen.loadDOM());
            il.append(methodGen.loadIterator());
            il.append(methodGen.loadHandler());
            final int method = cpg.addMethodref(classGen.getClassName(),
                                                methodName, ATTR_SET_SIG);
            il.append(new INVOKESPECIAL(method));
        }

	// Translate other used attribute sets first, as local attributes
	// take precedence (last attributes overrides first)
	if (_useSets != null) _useSets.translate(classGen, methodGen);

	// Translate all local attributes
	final Enumeration attributes = elements();
	while (attributes.hasMoreElements()) {
	    SyntaxTreeNode element = (SyntaxTreeNode)attributes.nextElement();
	    if (element instanceof XslAttribute) {
		final XslAttribute attribute = (XslAttribute)element;
		attribute.translate(classGen, methodGen);
	    }
	}
	final InstructionList il = methodGen.getInstructionList();
	il.append(RETURN);
	
	methodGen.stripAttributes(true);
	methodGen.setMaxLocals();
	methodGen.setMaxStack();
	methodGen.removeNOPs();
	classGen.addMethod(methodGen.getMethod());
    
public com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypetypeCheck(com.sun.org.apache.xalan.internal.xsltc.compiler.SymbolTable stable)
Type check the contents of this element


	if (_ignore) return (Type.Void);

        // _mergeSet Point to any previous definition of this attribute set
	_mergeSet = stable.addAttributeSet(this);

	_method = AttributeSetPrefix + getXSLTC().nextAttributeSetSerial();

	if (_useSets != null) _useSets.typeCheck(stable);
	typeCheckContents(stable);
	return Type.Void;