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: ApplyImports.java,v 1.2.4.1 2005/09/13 12:22:02 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.compiler;
  
  import jaxp.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
  import jaxp.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
  import jaxp.sun.org.apache.bcel.internal.generic.InstructionList;
  import jaxp.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
  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;
  
  final class ApplyImports extends Instruction {
  
      private QName      _modeName;
      private int        _precedence;
  
      public void display(int indent) {
          indent(indent);
          Util.println("ApplyTemplates");
          indent(indent + IndentIncrement);
          if (_modeName != null) {
              indent(indent + IndentIncrement);
              Util.println("mode " + _modeName);
          }
      }
  
      /**
       * Returns true if this <xsl:apply-imports/> element has parameters
       */
      public boolean hasWithParams() {
          return hasContents();
      }
  
      /**
       * Determine the lowest import precedence for any stylesheet imported
       * or included by the stylesheet in which this <xsl:apply-imports/>
       * element occured. The templates that are imported by the stylesheet in
       * which this element occured will all have higher import precedence than
       * the integer returned by this method.
       */
      private int getMinPrecedence(int max) {
          // Move to root of include tree
          Stylesheet includeRoot = getStylesheet();
          while (includeRoot._includedFrom != null) {
              includeRoot = includeRoot._includedFrom;
          }
  
          return includeRoot.getMinimumDescendantPrecedence();
      }
  
      /**
       * Parse the attributes and contents of an <xsl:apply-imports/> element.
       */
      public void parseContents(Parser parser) {
          // Indicate to the top-level stylesheet that all templates must be
          // compiled into separate methods.
          Stylesheet stylesheet = getStylesheet();
          stylesheet.setTemplateInlining(false);
  
          // Get the mode we are currently in (might not be any)
          Template template = getTemplate();
          _modeName = template.getModeName();
          _precedence = template.getImportPrecedence();
  
          // Get the method name for <xsl:apply-imports/> in this mode
          stylesheet = parser.getTopLevelStylesheet();
  
          parseChildren(parser);  // with-params
      }
  
      /**
       * Type-check the attributes/contents of an <xsl:apply-imports/> element.
       */
      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
          typeCheckContents(stable);              // with-params
          return Type.Void;
      }
  
      /**
       * Translate call-template. A parameter frame is pushed only if
       * some template in the stylesheet uses parameters.
       */
      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
          final Stylesheet stylesheet = classGen.getStylesheet();
          final ConstantPoolGen cpg = classGen.getConstantPool();
          final InstructionList il = methodGen.getInstructionList();
          final int current = methodGen.getLocalIndex("current");
  
          // Push the arguments that are passed to applyTemplates()
          il.append(classGen.loadTranslet());
          il.append(methodGen.loadDOM());
      il.append(methodGen.loadIterator());
          il.append(methodGen.loadHandler());
      il.append(methodGen.loadCurrentNode());
  
          // Push a new parameter frame in case imported template might expect
          // parameters.  The apply-imports has nothing that it can pass.
          if (stylesheet.hasLocalParams()) {
              il.append(classGen.loadTranslet());
              final int pushFrame = cpg.addMethodref(TRANSLET_CLASS,
                                                     PUSH_PARAM_FRAME,
                                                     PUSH_PARAM_FRAME_SIG);
              il.append(new INVOKEVIRTUAL(pushFrame));
          }
  
          // Get the [min,max> precedence of all templates imported under the
          // current stylesheet
          final int maxPrecedence = _precedence;
          final int minPrecedence = getMinPrecedence(maxPrecedence);
          final Mode mode = stylesheet.getMode(_modeName);
  
          // Get name of appropriate apply-templates function for this
          // xsl:apply-imports instruction
          String functionName = mode.functionName(minPrecedence, maxPrecedence);
  
          // Construct the translet class-name and the signature of the method
          final String className = classGen.getStylesheet().getClassName();
          final String signature = classGen.getApplyTemplatesSigForImport();
          final int applyTemplates = cpg.addMethodref(className,
                                                      functionName,
                                                      signature);
          il.append(new INVOKEVIRTUAL(applyTemplates));
  
          // Pop any parameter frame that was pushed above.
          if (stylesheet.hasLocalParams()) {
              il.append(classGen.loadTranslet());
              final int pushFrame = cpg.addMethodref(TRANSLET_CLASS,
                                                     POP_PARAM_FRAME,
                                                     POP_PARAM_FRAME_SIG);
              il.append(new INVOKEVIRTUAL(pushFrame));
          }
      }
  
  }
  