Used the DAG algorithm given by Mike to re-implemented library constructor sorting...

[mirror_edk2.git] / Tools / Java / Source / GenBuild / org / tianocore / build / autogen / AutogenLibOrder.java

/**@file\r
 AutogenLibOrder class.\r
\r
 This class is to reorder library instance sequence according to library \r
 dependence.\r
 \r
 Copyright (c) 2006, Intel Corporation\r
 All rights reserved. This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
 http://opensource.org/licenses/bsd-license.php\r
 \r
 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
 **/\r
package org.tianocore.build.autogen;\r
\r
import java.util.ArrayList;\r
import java.util.HashMap;\r
import java.util.Iterator;\r
import java.util.LinkedList;\r
import java.util.List;\r
import java.util.Map;\r
import java.util.Stack;\r
import java.util.HashSet;\r
\r
import org.apache.xmlbeans.XmlObject;\r
import org.tianocore.build.exception.AutoGenException;\r
import org.tianocore.build.global.GlobalData;\r
import org.tianocore.build.global.SurfaceAreaQuery;\r
import org.tianocore.build.id.ModuleIdentification;\r
import org.tianocore.common.exception.EdkException;\r
import org.tianocore.common.logger.EdkLog;\r
/**\r
  This class This class is to reorder library instance sequence according to\r
  library dependence.\r
**/\r
public class AutogenLibOrder {\r
    ///\r
    /// The map of library class and its library instance.\r
    ///\r
    private Map<String, ModuleIdentification> libClassProducer = new HashMap<String, ModuleIdentification>();\r
\r
    ///\r
    /// The map of library instance and its consumed Library Classes.\r
    ///\r
    private Map<ModuleIdentification, String[]> libInstanceConsumes = new HashMap<ModuleIdentification, String[]>();\r
\r
    ///\r
    /// The map of library instance and its implemeted Library Classes.\r
    ///\r
    private Map<ModuleIdentification, String[]> libInstanceProduces = new HashMap<ModuleIdentification, String[]>();\r
\r
    ///\r
    /// The map of library instance and its consumers.\r
    ///\r
    private Map<ModuleIdentification, HashSet<ModuleIdentification>> libInstanceConsumedBy = new HashMap<ModuleIdentification, HashSet<ModuleIdentification>>();\r
\r
    ///\r
    /// List of library instance. It is String[3] list, String[0] is libraryName,\r
    /// String[1] is libraryConstructor name, String[2] is libDestructor name.\r
    ///\r
    private ModuleIdentification[] libInstanceList = null;\r
    \r
    /**\r
      Constructor function\r
    \r
      This function mainly initialize some member variable.\r
     \r
      @param  libraryList   List of the library instance.\r
      @throws Exception\r
    **/\r
    AutogenLibOrder(ModuleIdentification[] libraryList, String arch) throws EdkException {\r
        ModuleIdentification libInstance;\r
        String[]       libClassDeclList = null;\r
        String[]       libClassConsmList = null;\r
\r
        libInstanceList = new ModuleIdentification[libraryList.length];\r
        for (int i = 0; i < libraryList.length; i++) {\r
            libInstance = libraryList[i];\r
            libInstanceList[i] = libInstance;\r
            //\r
            // Add libraryInstance in to libInstanceList.\r
            // \r
            Map<String, XmlObject> libDoc = GlobalData.getDoc(libInstance, arch);\r
            SurfaceAreaQuery saq = new SurfaceAreaQuery(libDoc);\r
            libInstance.setConstructor(saq.getLibConstructorName());\r
            libInstance.setDestructor(saq.getLibDestructorName());\r
            \r
            //\r
            // Add library instance and consumed library class list to\r
            // libInstanceConsumes.\r
            //\r
            libClassConsmList = saq.getLibraryClasses(CommonDefinition.ALWAYSCONSUMED, arch);\r
            if (libClassConsmList != null) {\r
                /*\r
                String[] classStr = new String[libClassConsmList.length];\r
                for (int k = 0; k < libClassConsmList.length; k++) {\r
                    classStr[k] = libClassConsmList[k];\r
                }\r
                */\r
                if (this.libInstanceConsumes.containsKey(libInstance)) {\r
                    throw new AutoGenException(\r
                            libraryList[i].getName()\r
                                    + "-- this library instance already exists, please check the library instance list!");\r
                } else {\r
                    this.libInstanceConsumes.put(libInstance, libClassConsmList);\r
                }\r
            }\r
\r
            //\r
            // Add library class and library instance map.\r
            //\r
            libClassDeclList = saq.getLibraryClasses(CommonDefinition.ALWAYSPRODUCED, arch);\r
            if (libClassDeclList != null) {\r
                this.libInstanceProduces.put(libInstance, libClassDeclList);\r
                for (int j = 0; j < libClassDeclList.length; j++) {\r
                    if (this.libClassProducer.containsKey(libClassDeclList[j])) {\r
                        EdkLog.log(EdkLog.EDK_ERROR,libClassDeclList[j]\r
                                + " class is already implemented by "\r
                                + this.libClassProducer.get(libClassDeclList[j]));\r
                        throw new AutoGenException("Library Class: " + libClassDeclList\r
                                + " already has a library instance!");\r
                    } else {\r
                        this.libClassProducer.put(libClassDeclList[j], libInstance);\r
                    }\r
                }\r
            }\r
        }\r
\r
        for (Iterator it = libClassProducer.keySet().iterator(); it.hasNext();) {\r
            String className = (String)it.next();\r
            libInstance = libClassProducer.get(className);\r
            libInstanceConsumedBy.put(libInstance, new HashSet<ModuleIdentification>());\r
\r
            for (int k = 0; k < libraryList.length; ++k) {\r
                ModuleIdentification consumer = libraryList[k];\r
                String[] consumedClassList = libInstanceConsumes.get(consumer);\r
\r
                for (int l = 0; l < consumedClassList.length; ++l) {\r
                    if (consumedClassList[l].equals(className)) {\r
                        libInstanceConsumedBy.get(libInstance).add(consumer);\r
                    }\r
                }\r
            }\r
        }\r
    }\r
\r
    /**\r
      orderLibInstance\r
\r
      This function reorder the library instance according the library class \r
      dependency.\r
\r
      @return     List which content the ordered library instance.\r
    **/\r
    List<ModuleIdentification> orderLibInstance() throws EdkException {\r
        LinkedList<ModuleIdentification> orderList = new LinkedList<ModuleIdentification>();\r
        LinkedList<ModuleIdentification> noConsumerList = new LinkedList<ModuleIdentification>();\r
\r
        for (int i = 0; i < libInstanceList.length; ++i) {\r
            if (libInstanceConsumedBy.get(libInstanceList[i]).size() == 0) {\r
                noConsumerList.add(libInstanceList[i]);\r
            }\r
        }\r
\r
        while (noConsumerList.size() > 0) {\r
            ModuleIdentification n = noConsumerList.poll();\r
            orderList.addFirst(n);\r
\r
            String[] consumedClassList = libInstanceConsumes.get(n);\r
            for (int i = 0; i < consumedClassList.length; ++i) {\r
                ModuleIdentification m = libClassProducer.get(consumedClassList[i]);\r
                if (m == null) {\r
                    continue;\r
                }\r
                HashSet<ModuleIdentification> consumedBy = libInstanceConsumedBy.get(m);\r
                consumedBy.remove(n);\r
                if (consumedBy.size() == 0) {\r
                    noConsumerList.addLast(m);\r
                }\r
            }\r
\r
            boolean circularlyConsumed = false;\r
            while (noConsumerList.size() == 0 && !circularlyConsumed) {\r
                circularlyConsumed = true;\r
                for (int i = 0; i < libInstanceList.length; ++i) {\r
                    ModuleIdentification libInstance = libInstanceList[i];\r
                    if (!libInstance.hasConstructor()) {\r
                        continue;\r
                    }\r
\r
                    HashSet<ModuleIdentification> consumedBy = libInstanceConsumedBy.get(libInstance);\r
                    if (consumedBy.size() == 0) {\r
                        continue;\r
                    }\r
\r
                    ModuleIdentification[] consumedByList = consumedBy.toArray(new ModuleIdentification[consumedBy.size()]);\r
                    for (int j = 0; j < consumedByList.length; ++j) {\r
                        ModuleIdentification consumer = consumedByList[j];\r
                        if (consumer.hasConstructor()) {\r
                            continue;\r
                        }\r
                        //\r
                        // if there's no constructor in the library instance's consumer, \r
                        // remove it from the consumer list\r
                        // \r
                        consumedBy.remove(consumer);\r
                        circularlyConsumed = false;\r
                        if (consumedBy.size() == 0) {\r
                            noConsumerList.addLast(libInstance);\r
                            break;\r
                        }\r
                    }\r
\r
                    if (noConsumerList.size() > 0) {\r
                        break;\r
                    }\r
                }\r
            }\r
        }\r
\r
        for (int i = 0; i < libInstanceList.length; ++i) {\r
            if (!orderList.contains(libInstanceList[i])) {\r
                orderList.add(libInstanceList[i]);\r
            }\r
        }\r
        return orderList;\r
    }\r
}\r