content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * Licensed 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: ProcessingInstruction.java,v 1.2.4.1 2005/09/12 11:03:05 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import jaxp.sun.org.apache.bcel.internal.generic.ALOAD;
  import jaxp.sun.org.apache.bcel.internal.generic.ASTORE;
  import jaxp.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  import jaxp.sun.org.apache.bcel.internal.generic.GETFIELD;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKESTATIC;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  import jaxp.sun.org.apache.bcel.internal.generic.InstructionList;
  import jaxp.sun.org.apache.bcel.internal.generic.LocalVariableGen;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.Util;
  import jaxp.sun.org.apache.xml.internal.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(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());
      }
  }
  