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ProcessingInstruction.javaAPI DocJava SE 5 API5588Fri Aug 26 14:55:36 BST 2005com.sun.org.apache.xalan.internal.xsltc.compiler

ProcessingInstruction

public final class ProcessingInstruction extends Instruction
author
Jacek Ambroziak
author
Santiago Pericas-Geertsen

Fields Summary
private AttributeValue
_name
private boolean
_isLiteral
Constructors Summary
Methods Summary
public voidparseContents(com.sun.org.apache.xalan.internal.xsltc.compiler.Parser parser)

  // specified name is not AVT  
    
        
	final String name  = getAttribute("name");
    
        if (name.length() > 0) {
            _isLiteral = Util.isLiteral(name);
            if (_isLiteral) {
                if (!XMLChar.isValidNCName(name)) {
                    ErrorMsg err = new ErrorMsg(ErrorMsg.INVALID_NCNAME_ERR, name, this);
                    parser.reportError(Constants.ERROR, err);           
                }
            }   
            _name = AttributeValue.create(this, name, parser);
        }
        else
            reportError(this, parser, ErrorMsg.REQUIRED_ATTR_ERR, "name");
            
	if (name.equals("xml")) {
	    reportError(this, parser, ErrorMsg.ILLEGAL_PI_ERR, "xml");
	}
	parseChildren(parser);
    
public voidtranslate(com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator classGen, com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator methodGen)

	final ConstantPoolGen cpg = classGen.getConstantPool();
	final InstructionList il = methodGen.getInstructionList();
    
        if (!_isLiteral) {
            // if the ncname is an AVT, then the ncname has to be checked at runtime if it is a valid ncname
            LocalVariableGen nameValue = methodGen.addLocalVariable2("nameValue",
            Util.getJCRefType(STRING_SIG),
            il.getEnd());
            
            // store the name into a variable first so _name.translate only needs to be called once  
            _name.translate(classGen, methodGen);
            il.append(new ASTORE(nameValue.getIndex()));
            il.append(new ALOAD(nameValue.getIndex()));
            
            // call checkNCName if the name is an AVT
            final int check = cpg.addMethodref(BASIS_LIBRARY_CLASS, "checkNCName",
                                "("
                                +STRING_SIG
                                +")V");                 
                                il.append(new INVOKESTATIC(check));
            
            // Save the current handler base on the stack
            il.append(methodGen.loadHandler());
            il.append(DUP);     // first arg to "attributes" call            
            
            // load name value again    
            il.append(new ALOAD(nameValue.getIndex()));            
        } else {    
            // Save the current handler base on the stack
            il.append(methodGen.loadHandler());
            il.append(DUP);     // first arg to "attributes" call
            
            // Push attribute name
            _name.translate(classGen, methodGen);// 2nd arg
        
        }
        
	il.append(classGen.loadTranslet());
	il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS,
					       "stringValueHandler",
					       STRING_VALUE_HANDLER_SIG)));
	il.append(DUP);
	il.append(methodGen.storeHandler());

	// translate contents with substituted handler
	translateContents(classGen, methodGen);

	// get String out of the handler
	il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_VALUE_HANDLER,
						     "getValueOfPI",
						     "()" + STRING_SIG)));
	// call "processingInstruction"
	final int processingInstruction =
	    cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE,
				      "processingInstruction", 
				      "(" + STRING_SIG + STRING_SIG + ")V");
	il.append(new INVOKEINTERFACE(processingInstruction, 3));
	// Restore old handler base from stack
	il.append(methodGen.storeHandler());
    
public com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypetypeCheck(com.sun.org.apache.xalan.internal.xsltc.compiler.SymbolTable stable)

	_name.typeCheck(stable);
	typeCheckContents(stable);
	return Type.Void;