net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/CompilationUnitProblemFinder.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.core;
  12
  13 import java.util.Locale;
  14
  15 import net.sourceforge.phpdt.core.ICompilationUnit;
  16 import net.sourceforge.phpdt.core.IJavaElement;
  17 import net.sourceforge.phpdt.core.IJavaProject;
  18 import net.sourceforge.phpdt.core.IPackageFragment;
  19 import net.sourceforge.phpdt.core.IProblemRequestor;
  20 import net.sourceforge.phpdt.core.JavaModelException;
  21 import net.sourceforge.phpdt.core.JavaCore;
  22 import net.sourceforge.phpdt.core.compiler.CharOperation;
  23 import net.sourceforge.phpdt.core.compiler.IProblem;
  24 import net.sourceforge.phpdt.internal.compiler.CompilationResult;
  25 import net.sourceforge.phpdt.internal.compiler.Compiler;
  26 import net.sourceforge.phpdt.internal.compiler.DefaultErrorHandlingPolicies;
  27 import net.sourceforge.phpdt.internal.compiler.ICompilerRequestor;
  28 import net.sourceforge.phpdt.internal.compiler.IErrorHandlingPolicy;
  29 import net.sourceforge.phpdt.internal.compiler.IProblemFactory;
  30 import net.sourceforge.phpdt.internal.compiler.env.INameEnvironment;
  31 import net.sourceforge.phpdt.internal.compiler.env.ISourceType;
  32 import net.sourceforge.phpdt.internal.compiler.lookup.PackageBinding;
  33 import net.sourceforge.phpdt.internal.compiler.parser.SourceTypeConverter;
  34 import net.sourceforge.phpdt.internal.compiler.problem.AbortCompilation;
  35 import net.sourceforge.phpdt.internal.compiler.problem.DefaultProblemFactory;
  36 import net.sourceforge.phpeclipse.internal.compiler.ast.CompilationUnitDeclaration;
  37
  38 import org.eclipse.core.runtime.IProgressMonitor;
  39
  40 /**
  41  * Responsible for resolving types inside a compilation unit being reconciled,
  42  * reporting the discovered problems to a given IProblemRequestor.
  43  */
  44 public class CompilationUnitProblemFinder extends Compiler {
  45
  46         /**
  47          * Answer a new CompilationUnitVisitor using the given name environment and compiler options.
  48          * The environment and options will be in effect for the lifetime of the compiler.
  49          * When the compiler is run, compilation results are sent to the given requestor.
  50          *
  51          *  @param environment org.eclipse.jdt.internal.compiler.api.env.INameEnvironment
  52          *      Environment used by the compiler in order to resolve type and package
  53          *      names. The name environment implements the actual connection of the compiler
  54          *      to the outside world (e.g. in batch mode the name environment is performing
  55          *      pure file accesses, reuse previous build state or connection to repositories).
  56          *      Note: the name environment is responsible for implementing the actual classpath
  57          *            rules.
  58          *
  59          *  @param policy org.eclipse.jdt.internal.compiler.api.problem.IErrorHandlingPolicy
  60          *      Configurable part for problem handling, allowing the compiler client to
  61          *      specify the rules for handling problems (stop on first error or accumulate
  62          *      them all) and at the same time perform some actions such as opening a dialog
  63          *      in UI when compiling interactively.
  64          *      @see org.eclipse.jdt.internal.compiler.api.problem.DefaultErrorHandlingPolicies
  65          *
  66          *      @param settings The settings to use for the resolution.
  67          *
  68          *  @param requestor org.eclipse.jdt.internal.compiler.api.ICompilerRequestor
  69          *      Component which will receive and persist all compilation results and is intended
  70          *      to consume them as they are produced. Typically, in a batch compiler, it is
  71          *      responsible for writing out the actual .class files to the file system.
  72          *      @see org.eclipse.jdt.internal.compiler.api.CompilationResult
  73          *
  74          *  @param problemFactory org.eclipse.jdt.internal.compiler.api.problem.IProblemFactory
  75          *      Factory used inside the compiler to create problem descriptors. It allows the
  76          *      compiler client to supply its own representation of compilation problems in
  77          *      order to avoid object conversions. Note that the factory is not supposed
  78          *      to accumulate the created problems, the compiler will gather them all and hand
  79          *      them back as part of the compilation unit result.
  80          */
  81         protected CompilationUnitProblemFinder(
  82                 INameEnvironment environment,
  83                 IErrorHandlingPolicy policy,
  84 //              Map settings,
  85                 ICompilerRequestor requestor,
  86                 IProblemFactory problemFactory) {
  87
  88                 super(environment, policy, requestor, problemFactory, true);//settings, requestor, problemFactory, true);
  89         }
  90
  91         /**
  92          * Add additional source types
  93          */
  94         public void accept(ISourceType[] sourceTypes, PackageBinding packageBinding) {
  95                 // ensure to jump back to toplevel type for first one (could be a member)
  96 //              while (sourceTypes[0].getEnclosingType() != null)
  97 //                      sourceTypes[0] = sourceTypes[0].getEnclosingType();
  98
  99                 CompilationResult result =
 100                         new CompilationResult(sourceTypes[0].getFileName(), 1, 1, 10); //this.options.maxProblemsPerUnit);
 101
 102                 // need to hold onto this
 103                 CompilationUnitDeclaration unit =
 104                         SourceTypeConverter.buildCompilationUnit(
 105                                 sourceTypes,//sourceTypes[0] is always toplevel here
 106                                 true, // need field and methods
 107                                 true, // need member types
 108                                 true, // need field initialization
 109                                 lookupEnvironment.problemReporter,
 110                                 result);
 111
 112                 if (unit != null) {
 113                         this.lookupEnvironment.buildTypeBindings(unit);
 114                         this.lookupEnvironment.completeTypeBindings(unit, true);
 115                 }
 116         }
 117
 118         /*
 119          *  Low-level API performing the actual compilation
 120          */
 121         protected static IErrorHandlingPolicy getHandlingPolicy() {
 122                 return DefaultErrorHandlingPolicies.proceedWithAllProblems();
 123         }
 124
 125         protected static INameEnvironment getNameEnvironment(ICompilationUnit sourceUnit)
 126                 throws JavaModelException {
 127                 return (SearchableEnvironment) ((JavaProject) sourceUnit.getJavaProject())
 128                         .getSearchableNameEnvironment();
 129         }
 130
 131         /*
 132          * Answer the component to which will be handed back compilation results from the compiler
 133          */
 134         protected static ICompilerRequestor getRequestor() {
 135                 return new ICompilerRequestor() {
 136                         public void acceptResult(CompilationResult compilationResult) {
 137                         }
 138                 };
 139         }
 140
 141         protected static IProblemFactory getProblemFactory(
 142                 final char[] fileName,
 143                 final IProblemRequestor problemRequestor,
 144                 final IProgressMonitor monitor) {
 145
 146                 return new DefaultProblemFactory(Locale.getDefault()) {
 147                         public IProblem createProblem(
 148                                 char[] originatingFileName,
 149                                 int problemId,
 150                                 String[] problemArguments,
 151                                 String[] messageArguments,
 152                                 int severity,
 153                                 int startPosition,
 154                                 int endPosition,
 155                                 int lineNumber) {
 156
 157                                 if (monitor != null && monitor.isCanceled()){
 158                                         throw new AbortCompilation(true, null); // silent abort
 159                                 }
 160
 161                                 IProblem problem =
 162                                         super.createProblem(
 163                                                 originatingFileName,
 164                                                 problemId,
 165                                                 problemArguments,
 166                                                 messageArguments,
 167                                                 severity,
 168                                                 startPosition,
 169                                                 endPosition,
 170                                                 lineNumber);
 171                                 // only report local problems
 172                                 if (CharOperation.equals(originatingFileName, fileName)){
 173                                         if (JavaModelManager.VERBOSE){
 174                                                 System.out.println("PROBLEM FOUND while reconciling : "+problem.getMessage());//$NON-NLS-1$
 175                                         }
 176                                         problemRequestor.acceptProblem(problem);
 177                                 }
 178                                 if (monitor != null && monitor.isCanceled()){
 179                                         throw new AbortCompilation(true, null); // silent abort
 180                                 }
 181
 182                                 return problem;
 183                         }
 184                 };
 185         }
 186
 187         public static CompilationUnitDeclaration process(
 188                 ICompilationUnit unitElement,
 189                 IProblemRequestor problemRequestor,
 190                 IProgressMonitor monitor)
 191                 throws JavaModelException {
 192
 193                 char[] fileName = unitElement.getElementName().toCharArray();
 194
 195                 IJavaProject project = unitElement.getJavaProject();
 196                 CompilationUnitProblemFinder problemFinder =
 197                         new CompilationUnitProblemFinder(
 198                                 getNameEnvironment(unitElement),
 199                                 getHandlingPolicy(),
 200                         getRequestor(),
 201                                                         getProblemFactory(fileName, problemRequestor, monitor));
 202 //                              project.getOptions(true),
 203 //                              getRequestor(),
 204 //                              getProblemFactory(fileName, problemRequestor, monitor));
 205
 206                 CompilationUnitDeclaration unit = null;
 207                 try {
 208                         String encoding = project.getOption(JavaCore.CORE_ENCODING, true);
 209
 210                         IPackageFragment packageFragment = (IPackageFragment)unitElement.getAncestor(IJavaElement.PACKAGE_FRAGMENT);
 211                         char[][] expectedPackageName = null;
 212                         if (packageFragment != null){
 213                                 expectedPackageName = CharOperation.splitOn('.', packageFragment.getElementName().toCharArray());
 214                         }
 215                         unit = problemFinder.resolve(
 216                                         new BasicCompilationUnit(
 217                                                 unitElement.getSource().toCharArray(),
 218                                                 expectedPackageName,
 219                                                 new String(fileName),
 220                                                 encoding),
 221                                         true, // verify methods
 222                                         true); // analyze code
 223 //                                      true); // generate code
 224                         return unit;
 225                 } finally {
 226                         if (unit != null) {
 227                                 unit.cleanUp();
 228                         }
 229                         problemFinder.lookupEnvironment.reset();
 230                 }
 231         }
 232 }
 233