| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id$ |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import org.apache.bcel.generic.ALOAD; |
| import org.apache.bcel.generic.ASTORE; |
| import org.apache.bcel.generic.ConstantPoolGen; |
| import org.apache.bcel.generic.GETFIELD; |
| import org.apache.bcel.generic.INVOKEINTERFACE; |
| import org.apache.bcel.generic.INVOKESTATIC; |
| import org.apache.bcel.generic.INVOKEVIRTUAL; |
| import org.apache.bcel.generic.InstructionList; |
| import org.apache.bcel.generic.LocalVariableGen; |
| import org.apache.xalan.xsltc.compiler.util.ClassGenerator; |
| import org.apache.xalan.xsltc.compiler.util.ErrorMsg; |
| import org.apache.xalan.xsltc.compiler.util.MethodGenerator; |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.xalan.xsltc.compiler.util.TypeCheckError; |
| import org.apache.xalan.xsltc.compiler.util.Util; |
| import org.apache.xml.utils.XML11Char; |
| |
| /** |
| * @author Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| */ |
| final class ProcessingInstruction extends Instruction { |
| |
| private AttributeValue _name; // name treated as AVT (7.1.3) |
| private boolean _isLiteral = false; // specified name is not AVT |
| |
| public void parseContents(Parser parser) { |
| final String name = getAttribute("name"); |
| |
| if (name.length() > 0) { |
| _isLiteral = Util.isLiteral(name); |
| if (_isLiteral) { |
| if (!XML11Char.isXML11ValidNCName(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 Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| _name.typeCheck(stable); |
| typeCheckContents(stable); |
| return Type.Void; |
| } |
| |
| public void translate(ClassGenerator classGen, 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), |
| null); |
| |
| // store the name into a variable first so _name.translate only needs to be called once |
| _name.translate(classGen, methodGen); |
| nameValue.setStart(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 |
| nameValue.setEnd(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()); |
| } |
| } |