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   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.compiler.parser;
  12
  13 /**
  14  * Converter from source element type to parsed compilation unit.
  15  *
  16  * Limitation:
  17  * | The source element field does not carry any information for its constant part, thus
  18  * | the converted parse tree will not include any field initializations.
  19  * | Therefore, any binary produced by compiling against converted source elements will
  20  * | not take advantage of remote field constant inlining.
  21  * | Given the intended purpose of the conversion is to resolve references, this is not
  22  * | a problem.
  23  *
  24  */
  25
  26 import java.util.ArrayList;
  27
  28 import net.sourceforge.phpdt.core.compiler.CharOperation;
  29 import net.sourceforge.phpdt.internal.compiler.CompilationResult;
  30 import net.sourceforge.phpdt.internal.compiler.env.ISourceField;
  31 import net.sourceforge.phpdt.internal.compiler.env.ISourceMethod;
  32 import net.sourceforge.phpdt.internal.compiler.env.ISourceType;
  33 import net.sourceforge.phpdt.internal.compiler.lookup.CompilerModifiers;
  34 import net.sourceforge.phpdt.internal.compiler.problem.ProblemReporter;
  35 import net.sourceforge.phpeclipse.internal.compiler.ast.AbstractMethodDeclaration;
  36 import net.sourceforge.phpeclipse.internal.compiler.ast.Argument;
  37 import net.sourceforge.phpeclipse.internal.compiler.ast.ArrayQualifiedTypeReference;
  38 import net.sourceforge.phpeclipse.internal.compiler.ast.ArrayTypeReference;
  39 import net.sourceforge.phpeclipse.internal.compiler.ast.CompilationUnitDeclaration;
  40 import net.sourceforge.phpeclipse.internal.compiler.ast.ConstructorDeclaration;
  41 import net.sourceforge.phpeclipse.internal.compiler.ast.FieldDeclaration;
  42 import net.sourceforge.phpeclipse.internal.compiler.ast.ImportReference;
  43 import net.sourceforge.phpeclipse.internal.compiler.ast.MemberTypeDeclaration;
  44 import net.sourceforge.phpeclipse.internal.compiler.ast.MethodDeclaration;
  45 import net.sourceforge.phpeclipse.internal.compiler.ast.QualifiedTypeReference;
  46 import net.sourceforge.phpeclipse.internal.compiler.ast.SingleTypeReference;
  47 import net.sourceforge.phpeclipse.internal.compiler.ast.TypeDeclaration;
  48 import net.sourceforge.phpeclipse.internal.compiler.ast.TypeReference;
  49
  50 public class SourceTypeConverter implements CompilerModifiers {
  51
  52         private boolean needFieldInitialization;
  53         private CompilationUnitDeclaration unit;
  54         private UnitParser parser;
  55         private ProblemReporter problemReporter;
  56
  57         private SourceTypeConverter(boolean needFieldInitialization, ProblemReporter problemReporter) {
  58                 this.needFieldInitialization = needFieldInitialization;
  59                 this.problemReporter = problemReporter;
  60         }
  61
  62         /*
  63          * Convert a set of source element types into a parsed compilation unit declaration
  64          * The argument types are then all grouped in the same unit. The argument types must
  65          * at least contain one type.
  66          * Can optionally ignore fields & methods or member types or field initialization
  67          */
  68         public static CompilationUnitDeclaration buildCompilationUnit(
  69                 ISourceType[] sourceTypes,
  70                 boolean needFieldsAndMethods,
  71                 boolean needMemberTypes,
  72                 boolean needFieldInitialization,
  73                 ProblemReporter problemReporter,
  74                 CompilationResult compilationResult) {
  75
  76                 return
  77                         new SourceTypeConverter(needFieldInitialization, problemReporter).convert(
  78                                 sourceTypes,
  79                                 needFieldsAndMethods,
  80                                 needMemberTypes,
  81                                 compilationResult);
  82         }
  83
  84         /*
  85          * Convert a set of source element types into a parsed compilation unit declaration
  86          * The argument types are then all grouped in the same unit. The argument types must
  87          * at least contain one type.
  88          */
  89         private CompilationUnitDeclaration convert(
  90                 ISourceType[] sourceTypes,
  91                 boolean needFieldsAndMethods,
  92                 boolean needMemberTypes,
  93                 CompilationResult compilationResult) {
  94                 ISourceType sourceType = sourceTypes[0];
  95                 if (sourceType.getName() == null)
  96                         return null; // do a basic test that the sourceType is valid
  97
  98                 this.unit = new CompilationUnitDeclaration(problemReporter, compilationResult, 0);
  99                 // not filled at this point
 100
 101                 /* only positions available */
 102                 int start = sourceType.getNameSourceStart();
 103                 int end = sourceType.getNameSourceEnd();
 104
 105                 /* convert package and imports */
 106                 if (sourceType.getPackageName() != null
 107                         && sourceType.getPackageName().length > 0)
 108                         // if its null then it is defined in the default package
 109                         this.unit.currentPackage =
 110                                 createImportReference(sourceType.getPackageName(), start, end);
 111                 char[][] importNames = sourceType.getImports();
 112                 int importCount = importNames == null ? 0 : importNames.length;
 113                 this.unit.imports = new ImportReference[importCount];
 114                 for (int i = 0; i < importCount; i++)
 115                         this.unit.imports[i] = createImportReference(importNames[i], start, end);
 116                 /* convert type(s) */
 117                 int typeCount = sourceTypes.length;
 118                 this.unit.types = new ArrayList(typeCount);
 119                 for (int i = 0; i < typeCount; i++) {
 120                         this.unit.types.set(i,
 121                                                         convert(sourceTypes[i], needFieldsAndMethods, needMemberTypes, compilationResult));
 122 //                      this.unit.types[i] =
 123 //                              convert(sourceTypes[i], needFieldsAndMethods, needMemberTypes, compilationResult);
 124                 }
 125                 return this.unit;
 126         }
 127
 128         /*
 129          * Convert a field source element into a parsed field declaration
 130          */
 131         private FieldDeclaration convert(ISourceField sourceField, TypeDeclaration type) {
 132
 133                 FieldDeclaration field = new FieldDeclaration();
 134
 135                 int start = sourceField.getNameSourceStart();
 136                 int end = sourceField.getNameSourceEnd();
 137
 138                 field.name = sourceField.getName();
 139                 field.sourceStart = start;
 140                 field.sourceEnd = end;
 141                 field.type = createTypeReference(sourceField.getTypeName(), start, end);
 142                 field.declarationSourceStart = sourceField.getDeclarationSourceStart();
 143                 field.declarationSourceEnd = sourceField.getDeclarationSourceEnd();
 144                 field.modifiers = sourceField.getModifiers();
 145
 146                 if (this.needFieldInitialization) {
 147                         /* conversion of field constant */
 148                         char[] initializationSource = sourceField.getInitializationSource();
 149                         if (initializationSource != null) {
 150                                 if (this.parser == null) {
 151                                         this.parser =
 152                                                 new UnitParser(
 153                                                         this.problemReporter);
 154 //                                                      true,
 155 //                                                      this.problemReporter.options.sourceLevel >= CompilerOptions.JDK1_4);
 156                                 }
 157                                 this.parser.parse(field, type, this.unit, initializationSource);
 158                         }
 159                 }
 160
 161                 return field;
 162         }
 163
 164         /*
 165          * Convert a method source element into a parsed method/constructor declaration
 166          */
 167         private AbstractMethodDeclaration convert(ISourceMethod sourceMethod, CompilationResult compilationResult) {
 168
 169                 AbstractMethodDeclaration method;
 170
 171                 /* only source positions available */
 172                 int start = sourceMethod.getNameSourceStart();
 173                 int end = sourceMethod.getNameSourceEnd();
 174
 175                 if (sourceMethod.isConstructor()) {
 176                         ConstructorDeclaration decl = new ConstructorDeclaration(compilationResult);
 177                         decl.isDefaultConstructor = false;
 178                         method = decl;
 179                 } else {
 180                         MethodDeclaration decl = new MethodDeclaration(compilationResult);
 181                         /* convert return type */
 182                         decl.returnType =
 183                                 createTypeReference(sourceMethod.getReturnTypeName(), start, end);
 184                         method = decl;
 185                 }
 186                 method.selector = sourceMethod.getSelector();
 187                 method.modifiers = sourceMethod.getModifiers();
 188                 method.sourceStart = start;
 189                 method.sourceEnd = end;
 190                 method.declarationSourceStart = sourceMethod.getDeclarationSourceStart();
 191                 method.declarationSourceEnd = sourceMethod.getDeclarationSourceEnd();
 192
 193                 /* convert arguments */
 194                 char[][] argumentTypeNames = sourceMethod.getArgumentTypeNames();
 195                 char[][] argumentNames = sourceMethod.getArgumentNames();
 196                 int argumentCount = argumentTypeNames == null ? 0 : argumentTypeNames.length;
 197                 long position = (long) start << 32 + end;
 198                 method.arguments = new Argument[argumentCount];
 199                 for (int i = 0; i < argumentCount; i++) {
 200                         method.arguments[i] =
 201                                 new Argument(
 202                                         argumentNames[i],
 203                                         position,
 204                                         createTypeReference(argumentTypeNames[i], start, end),
 205                                         AccDefault);
 206                         // do not care whether was final or not
 207                 }
 208
 209                 /* convert thrown exceptions */
 210                 char[][] exceptionTypeNames = sourceMethod.getExceptionTypeNames();
 211                 int exceptionCount = exceptionTypeNames == null ? 0 : exceptionTypeNames.length;
 212                 method.thrownExceptions = new TypeReference[exceptionCount];
 213                 for (int i = 0; i < exceptionCount; i++) {
 214                         method.thrownExceptions[i] =
 215                                 createTypeReference(exceptionTypeNames[i], start, end);
 216                 }
 217                 return method;
 218         }
 219
 220         /*
 221          * Convert a source element type into a parsed type declaration
 222          *
 223          * Can optionally ignore fields & methods
 224          */
 225         private TypeDeclaration convert(
 226                 ISourceType sourceType,
 227                 boolean needFieldsAndMethods,
 228                 boolean needMemberTypes,
 229                 CompilationResult compilationResult) {
 230                 /* create type declaration - can be member type */
 231                 TypeDeclaration type;
 232                 if (sourceType.getEnclosingType() == null) {
 233                         type = new TypeDeclaration(compilationResult);
 234                 } else {
 235                         type = new MemberTypeDeclaration(compilationResult);
 236                 }
 237                 type.name = sourceType.getName();
 238                 int start, end; // only positions available
 239                 type.sourceStart = start = sourceType.getNameSourceStart();
 240                 type.sourceEnd = end = sourceType.getNameSourceEnd();
 241                 type.modifiers = sourceType.getModifiers();
 242                 type.declarationSourceStart = sourceType.getDeclarationSourceStart();
 243                 type.declarationSourceEnd = sourceType.getDeclarationSourceEnd();
 244                 type.bodyEnd = type.declarationSourceEnd;
 245
 246                 /* set superclass and superinterfaces */
 247                 if (sourceType.getSuperclassName() != null)
 248                         type.superclass =
 249                                 createTypeReference(sourceType.getSuperclassName(), start, end);
 250                 char[][] interfaceNames = sourceType.getInterfaceNames();
 251                 int interfaceCount = interfaceNames == null ? 0 : interfaceNames.length;
 252                 type.superInterfaces = new TypeReference[interfaceCount];
 253                 for (int i = 0; i < interfaceCount; i++) {
 254                         type.superInterfaces[i] = createTypeReference(interfaceNames[i], start, end);
 255                 }
 256                 /* convert member types */
 257                 if (needMemberTypes) {
 258                         ISourceType[] sourceMemberTypes = sourceType.getMemberTypes();
 259                         int sourceMemberTypeCount =
 260                                 sourceMemberTypes == null ? 0 : sourceMemberTypes.length;
 261                         type.memberTypes = new MemberTypeDeclaration[sourceMemberTypeCount];
 262                         for (int i = 0; i < sourceMemberTypeCount; i++) {
 263                                 type.memberTypes[i] =
 264                                         (MemberTypeDeclaration) convert(sourceMemberTypes[i],
 265                                                 needFieldsAndMethods,
 266                                                 true,
 267                                                 compilationResult);
 268                         }
 269                 }
 270                 /* convert fields and methods */
 271                 if (needFieldsAndMethods) {
 272                         /* convert fields */
 273                         ISourceField[] sourceFields = sourceType.getFields();
 274                         int sourceFieldCount = sourceFields == null ? 0 : sourceFields.length;
 275                         type.fields = new FieldDeclaration[sourceFieldCount];
 276                         for (int i = 0; i < sourceFieldCount; i++) {
 277                                 type.fields[i] = convert(sourceFields[i], type);
 278                         }
 279
 280                         /* convert methods - need to add default constructor if necessary */
 281                         ISourceMethod[] sourceMethods = sourceType.getMethods();
 282                         int sourceMethodCount = sourceMethods == null ? 0 : sourceMethods.length;
 283
 284                         /* source type has a constructor ?           */
 285                         /* by default, we assume that one is needed. */
 286                         int neededCount = 0;
 287                         if (!type.isInterface()) {
 288                                 neededCount = 1;
 289                                 for (int i = 0; i < sourceMethodCount; i++) {
 290                                         if (sourceMethods[i].isConstructor()) {
 291                                                 neededCount = 0;
 292                                                 // Does not need the extra constructor since one constructor already exists.
 293                                                 break;
 294                                         }
 295                                 }
 296                         }
 297                         type.methods = new AbstractMethodDeclaration[sourceMethodCount + neededCount];
 298                         if (neededCount != 0) { // add default constructor in first position
 299                                 type.methods[0] = type.createsInternalConstructor(false, false);
 300                         }
 301                         boolean isInterface = type.isInterface();
 302                         for (int i = 0; i < sourceMethodCount; i++) {
 303                                 AbstractMethodDeclaration method =convert(sourceMethods[i], compilationResult);
 304                                 if (isInterface || method.isAbstract()) { // fix-up flag
 305                                         method.modifiers |= AccSemicolonBody;
 306                                 }
 307                                 type.methods[neededCount + i] = method;
 308                         }
 309                 }
 310                 return type;
 311         }
 312
 313         /*
 314          * Build an import reference from an import name, e.g. java.lang.*
 315          */
 316         private ImportReference createImportReference(
 317                 char[] importName,
 318                 int start,
 319                 int end) {
 320
 321                 /* count identifiers */
 322                 int max = importName.length;
 323                 int identCount = 0;
 324                 for (int i = 0; i < max; i++) {
 325                         if (importName[i] == '.')
 326                                 identCount++;
 327                 }
 328                 /* import on demand? */
 329                 boolean onDemand = importName[max - 1] == '*';
 330                 if (!onDemand)
 331                         identCount++; // one more ident than dots
 332
 333                 long[] positions = new long[identCount];
 334                 long position = (long) start << 32 + end;
 335                 for (int i = 0; i < identCount; i++) {
 336                         positions[i] = position;
 337                 }
 338                 return new ImportReference(
 339                         CharOperation.splitOn('.', importName, 0, max - (onDemand ? 2 : 0)),
 340                         positions,
 341                         onDemand);
 342         }
 343
 344         /*
 345          * Build a type reference from a readable name, e.g. java.lang.Object[][]
 346          */
 347         private TypeReference createTypeReference(
 348                 char[] typeSignature,
 349                 int start,
 350                 int end) {
 351
 352                 /* count identifiers and dimensions */
 353                 int max = typeSignature.length;
 354                 int dimStart = max;
 355                 int dim = 0;
 356                 int identCount = 1;
 357                 for (int i = 0; i < max; i++) {
 358                         switch (typeSignature[i]) {
 359                                 case '[' :
 360                                         if (dim == 0)
 361                                                 dimStart = i;
 362                                         dim++;
 363                                         break;
 364                                 case '.' :
 365                                         identCount++;
 366                                         break;
 367                         }
 368                 }
 369                 /* rebuild identifiers and dimensions */
 370                 if (identCount == 1) { // simple type reference
 371                         if (dim == 0) {
 372                                 return new SingleTypeReference(typeSignature, (((long) start )<< 32) + end);
 373                         } else {
 374                                 char[] identifier = new char[dimStart];
 375                                 System.arraycopy(typeSignature, 0, identifier, 0, dimStart);
 376                                 return new ArrayTypeReference(identifier, dim, (((long) start) << 32) + end);
 377                         }
 378                 } else { // qualified type reference
 379                         long[] positions = new long[identCount];
 380                         long pos = (((long) start) << 32) + end;
 381                         for (int i = 0; i < identCount; i++) {
 382                                 positions[i] = pos;
 383                         }
 384                         char[][] identifiers =
 385                                 CharOperation.splitOn('.', typeSignature, 0, dimStart);
 386                         if (dim == 0) {
 387                                 return new QualifiedTypeReference(identifiers, positions);
 388                         } else {
 389                                 return new ArrayQualifiedTypeReference(identifiers, dim, positions);
 390                         }
 391                 }
 392         }
 393 }