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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: | The source element field does not carry any information for its
  17  * constant part, thus | the converted parse tree will not include any field
  18  * initializations. | Therefore, any binary produced by compiling against
  19  * converted source elements will | not take advantage of remote field constant
  20  * inlining. | Given the intended purpose of the conversion is to resolve
  21  * references, this is not | a problem.
  22  *
  23  */
  24
  25 import java.util.ArrayList;
  26
  27 import net.sourceforge.phpdt.core.compiler.CharOperation;
  28 import net.sourceforge.phpdt.internal.compiler.CompilationResult;
  29 import net.sourceforge.phpdt.internal.compiler.ast.AbstractMethodDeclaration;
  30 import net.sourceforge.phpdt.internal.compiler.ast.Argument;
  31 import net.sourceforge.phpdt.internal.compiler.ast.ArrayQualifiedTypeReference;
  32 import net.sourceforge.phpdt.internal.compiler.ast.ArrayTypeReference;
  33 import net.sourceforge.phpdt.internal.compiler.ast.CompilationUnitDeclaration;
  34 import net.sourceforge.phpdt.internal.compiler.ast.ConstructorDeclaration;
  35 import net.sourceforge.phpdt.internal.compiler.ast.FieldDeclaration;
  36 import net.sourceforge.phpdt.internal.compiler.ast.ImportReference;
  37 import net.sourceforge.phpdt.internal.compiler.ast.MemberTypeDeclaration;
  38 import net.sourceforge.phpdt.internal.compiler.ast.MethodDeclaration;
  39 import net.sourceforge.phpdt.internal.compiler.ast.QualifiedTypeReference;
  40 import net.sourceforge.phpdt.internal.compiler.ast.SingleTypeReference;
  41 import net.sourceforge.phpdt.internal.compiler.ast.TypeDeclaration;
  42 import net.sourceforge.phpdt.internal.compiler.ast.TypeReference;
  43 import net.sourceforge.phpdt.internal.compiler.env.ISourceField;
  44 import net.sourceforge.phpdt.internal.compiler.env.ISourceMethod;
  45 import net.sourceforge.phpdt.internal.compiler.env.ISourceType;
  46 import net.sourceforge.phpdt.internal.compiler.lookup.CompilerModifiers;
  47 import net.sourceforge.phpdt.internal.compiler.problem.ProblemReporter;
  48
  49 public class SourceTypeConverter implements CompilerModifiers {
  50
  51         private boolean needFieldInitialization;
  52
  53         private CompilationUnitDeclaration unit;
  54
  55         private UnitParser parser;
  56
  57         private ProblemReporter problemReporter;
  58
  59         private SourceTypeConverter(boolean needFieldInitialization,
  60                         ProblemReporter problemReporter) {
  61                 this.needFieldInitialization = needFieldInitialization;
  62                 this.problemReporter = problemReporter;
  63         }
  64
  65         /*
  66          * Convert a set of source element types into a parsed compilation unit
  67          * declaration The argument types are then all grouped in the same unit. The
  68          * argument types must at least contain one type. Can optionally ignore
  69          * fields & methods or member types or field initialization
  70          */
  71         public static CompilationUnitDeclaration buildCompilationUnit(
  72                         ISourceType[] sourceTypes, boolean needFieldsAndMethods,
  73                         boolean needMemberTypes, boolean needFieldInitialization,
  74                         ProblemReporter problemReporter, CompilationResult compilationResult) {
  75
  76                 return new SourceTypeConverter(needFieldInitialization, problemReporter)
  77                                 .convert(sourceTypes, needFieldsAndMethods, needMemberTypes,
  78                                                 compilationResult);
  79         }
  80
  81         /*
  82          * Convert a set of source element types into a parsed compilation unit
  83          * declaration The argument types are then all grouped in the same unit. The
  84          * argument types must at least contain one type.
  85          */
  86         private CompilationUnitDeclaration convert(ISourceType[] sourceTypes,
  87                         boolean needFieldsAndMethods, boolean needMemberTypes,
  88                         CompilationResult compilationResult) {
  89                 ISourceType sourceType = sourceTypes[0];
  90                 if (sourceType.getName() == null)
  91                         return null; // do a basic test that the sourceType is valid
  92
  93                 this.unit = new CompilationUnitDeclaration(problemReporter,
  94                                 compilationResult, 0);
  95                 // not filled at this point
  96
  97                 /* only positions available */
  98                 int start = sourceType.getNameSourceStart();
  99                 int end = sourceType.getNameSourceEnd();
 100
 101                 /* convert package and imports */
 102                 // if (sourceType.getPackageName() != null
 103                 // && sourceType.getPackageName().length > 0)
 104                 // // if its null then it is defined in the default package
 105                 // this.unit.currentPackage =
 106                 // createImportReference(sourceType.getPackageName(), start, end);
 107                 char[][] importNames = sourceType.getImports();
 108                 int importCount = importNames == null ? 0 : importNames.length;
 109                 this.unit.imports = new ImportReference[importCount];
 110                 // for (int i = 0; i < importCount; i++)
 111                 // this.unit.imports[i] = createImportReference(importNames[i], start,
 112                 // end);
 113                 /* convert type(s) */
 114                 int typeCount = sourceTypes.length;
 115                 this.unit.types = new ArrayList(typeCount);
 116                 for (int i = 0; i < typeCount; i++) {
 117                         this.unit.types.set(i, convert(sourceTypes[i],
 118                                         needFieldsAndMethods, needMemberTypes, compilationResult));
 119                         // this.unit.types[i] =
 120                         // convert(sourceTypes[i], needFieldsAndMethods, needMemberTypes,
 121                         // compilationResult);
 122                 }
 123                 return this.unit;
 124         }
 125
 126         /*
 127          * Convert a field source element into a parsed field declaration
 128          */
 129         private FieldDeclaration convert(ISourceField sourceField,
 130                         TypeDeclaration type) {
 131
 132                 FieldDeclaration field = new FieldDeclaration();
 133
 134                 int start = sourceField.getNameSourceStart();
 135                 int end = sourceField.getNameSourceEnd();
 136
 137                 field.name = sourceField.getName();
 138                 field.sourceStart = start;
 139                 field.sourceEnd = end;
 140                 field.type = createTypeReference(sourceField.getTypeName(), start, end);
 141                 field.declarationSourceStart = sourceField.getDeclarationSourceStart();
 142                 field.declarationSourceEnd = sourceField.getDeclarationSourceEnd();
 143                 field.modifiers = sourceField.getModifiers();
 144
 145                 if (this.needFieldInitialization) {
 146                         /* conversion of field constant */
 147                         char[] initializationSource = sourceField.getInitializationSource();
 148                         if (initializationSource != null) {
 149                                 if (this.parser == null) {
 150                                         this.parser = new UnitParser(this.problemReporter);
 151                                         // true,
 152                                         // this.problemReporter.options.sourceLevel >=
 153                                         // CompilerOptions.JDK1_4);
 154                                 }
 155                                 this.parser.parse(field, type, this.unit, initializationSource);
 156                         }
 157                 }
 158
 159                 return field;
 160         }
 161
 162         /*
 163          * Convert a method source element into a parsed method/constructor
 164          * declaration
 165          */
 166         private AbstractMethodDeclaration convert(ISourceMethod sourceMethod,
 167                         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(
 177                                         compilationResult);
 178                         decl.isDefaultConstructor = false;
 179                         method = decl;
 180                 } else {
 181                         MethodDeclaration decl = new MethodDeclaration(compilationResult);
 182                         /* convert return type */
 183                         decl.returnType = createTypeReference(sourceMethod
 184                                         .getReturnTypeName(), start, end);
 185                         method = decl;
 186                 }
 187                 method.selector = sourceMethod.getSelector();
 188                 method.modifiers = sourceMethod.getModifiers();
 189                 method.sourceStart = start;
 190                 method.sourceEnd = end;
 191                 method.declarationSourceStart = sourceMethod
 192                                 .getDeclarationSourceStart();
 193                 method.declarationSourceEnd = sourceMethod.getDeclarationSourceEnd();
 194
 195                 /* convert arguments */
 196                 char[][] argumentTypeNames = sourceMethod.getArgumentTypeNames();
 197                 char[][] argumentNames = sourceMethod.getArgumentNames();
 198                 int argumentCount = argumentTypeNames == null ? 0
 199                                 : argumentTypeNames.length;
 200                 long position = (long) start << 32 + end;
 201                 method.arguments = new Argument[argumentCount];
 202                 for (int i = 0; i < argumentCount; i++) {
 203                         method.arguments[i] = new Argument(argumentNames[i], 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
 212                                 : exceptionTypeNames.length;
 213                 method.thrownExceptions = new TypeReference[exceptionCount];
 214                 for (int i = 0; i < exceptionCount; i++) {
 215                         method.thrownExceptions[i] = createTypeReference(
 216                                         exceptionTypeNames[i], start, end);
 217                 }
 218                 return method;
 219         }
 220
 221         /*
 222          * Convert a source element type into a parsed type declaration
 223          *
 224          * Can optionally ignore fields & methods
 225          */
 226         private TypeDeclaration convert(ISourceType sourceType,
 227                         boolean needFieldsAndMethods, boolean needMemberTypes,
 228                         CompilationResult compilationResult) {
 229                 /* create type declaration - can be member type */
 230                 TypeDeclaration type;
 231                 if (sourceType.getEnclosingType() == null) {
 232                         type = new TypeDeclaration(compilationResult);
 233                 } else {
 234                         type = new MemberTypeDeclaration(compilationResult);
 235                 }
 236                 type.name = sourceType.getName();
 237                 int start, end; // only positions available
 238                 type.sourceStart = start = sourceType.getNameSourceStart();
 239                 type.sourceEnd = end = sourceType.getNameSourceEnd();
 240                 type.modifiers = sourceType.getModifiers();
 241                 type.declarationSourceStart = sourceType.getDeclarationSourceStart();
 242                 type.declarationSourceEnd = sourceType.getDeclarationSourceEnd();
 243                 type.bodyEnd = type.declarationSourceEnd;
 244
 245                 /* set superclass and superinterfaces */
 246                 if (sourceType.getSuperclassName() != null)
 247                         type.superclass = createTypeReference(sourceType
 248                                         .getSuperclassName(), start, end);
 249                 char[][] interfaceNames = sourceType.getInterfaceNames();
 250                 int interfaceCount = interfaceNames == null ? 0 : interfaceNames.length;
 251                 type.superInterfaces = new TypeReference[interfaceCount];
 252                 for (int i = 0; i < interfaceCount; i++) {
 253                         type.superInterfaces[i] = createTypeReference(interfaceNames[i],
 254                                         start, end);
 255                 }
 256                 /* convert member types */
 257                 if (needMemberTypes) {
 258                         ISourceType[] sourceMemberTypes = sourceType.getMemberTypes();
 259                         int sourceMemberTypeCount = sourceMemberTypes == null ? 0
 260                                         : sourceMemberTypes.length;
 261                         type.memberTypes = new MemberTypeDeclaration[sourceMemberTypeCount];
 262                         for (int i = 0; i < sourceMemberTypeCount; i++) {
 263                                 type.memberTypes[i] = (MemberTypeDeclaration) convert(
 264                                                 sourceMemberTypes[i], needFieldsAndMethods, true,
 265                                                 compilationResult);
 266                         }
 267                 }
 268                 /* convert fields and methods */
 269                 if (needFieldsAndMethods) {
 270                         /* convert fields */
 271                         ISourceField[] sourceFields = sourceType.getFields();
 272                         int sourceFieldCount = sourceFields == null ? 0
 273                                         : sourceFields.length;
 274                         type.fields = new FieldDeclaration[sourceFieldCount];
 275                         for (int i = 0; i < sourceFieldCount; i++) {
 276                                 type.fields[i] = convert(sourceFields[i], type);
 277                         }
 278
 279                         /* convert methods - need to add default constructor if necessary */
 280                         ISourceMethod[] sourceMethods = sourceType.getMethods();
 281                         int sourceMethodCount = sourceMethods == null ? 0
 282                                         : 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
 293                                                 // constructor already exists.
 294                                                 break;
 295                                         }
 296                                 }
 297                         }
 298                         type.methods = new AbstractMethodDeclaration[sourceMethodCount
 299                                         + neededCount];
 300                         if (neededCount != 0) { // add default constructor in first position
 301                                 type.methods[0] = type.createsInternalConstructor(false, false);
 302                         }
 303                         boolean isInterface = type.isInterface();
 304                         for (int i = 0; i < sourceMethodCount; i++) {
 305                                 AbstractMethodDeclaration method = convert(sourceMethods[i],
 306                                                 compilationResult);
 307                                 if (isInterface || method.isAbstract()) { // fix-up flag
 308                                         method.modifiers |= AccSemicolonBody;
 309                                 }
 310                                 type.methods[neededCount + i] = method;
 311                         }
 312                 }
 313                 return type;
 314         }
 315
 316         /*
 317          * Build an import reference from an import name, e.g. java.lang.*
 318          */
 319         // private ImportReference createImportReference(
 320         // char[] importName,
 321         // int start,
 322         // int end) {
 323         //
 324         // /* count identifiers */
 325         // int max = importName.length;
 326         // int identCount = 0;
 327         // for (int i = 0; i < max; i++) {
 328         // if (importName[i] == '.')
 329         // identCount++;
 330         // }
 331         // /* import on demand? */
 332         // boolean onDemand = importName[max - 1] == '*';
 333         // if (!onDemand)
 334         // identCount++; // one more ident than dots
 335         //
 336         // long[] positions = new long[identCount];
 337         // long position = (long) start << 32 + end;
 338         // for (int i = 0; i < identCount; i++) {
 339         // positions[i] = position;
 340         // }
 341         // return new ImportReference(
 342         // CharOperation.splitOn('.', importName, 0, max - (onDemand ? 2 : 0)),
 343         // positions,
 344         // onDemand);
 345         // }
 346         /*
 347          * Build a type reference from a readable name, e.g. java.lang.Object[][]
 348          */
 349         private TypeReference createTypeReference(char[] typeSignature, 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,
 373                                                 (((long) start) << 32) + end);
 374                         } else {
 375                                 char[] identifier = new char[dimStart];
 376                                 System.arraycopy(typeSignature, 0, identifier, 0, dimStart);
 377                                 return new ArrayTypeReference(identifier, dim,
 378                                                 (((long) start) << 32) + end);
 379                         }
 380                 } else { // qualified type reference
 381                         long[] positions = new long[identCount];
 382                         long pos = (((long) start) << 32) + end;
 383                         for (int i = 0; i < identCount; i++) {
 384                                 positions[i] = pos;
 385                         }
 386                         char[][] identifiers = CharOperation.splitOn('.', typeSignature, 0,
 387                                         dimStart);
 388                         if (dim == 0) {
 389                                 return new QualifiedTypeReference(identifiers, positions);
 390                         } else {
 391                                 return new ArrayQualifiedTypeReference(identifiers, dim,
 392                                                 positions);
 393                         }
 394                 }
 395         }
 396 }