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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core.util;
/**
* Converter from element info to parsed compilation unit.
*
*/
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.CompilationResult;
import org.eclipse.jdt.internal.compiler.ast.*;
import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Argument;
import org.eclipse.jdt.internal.compiler.ast.ArrayQualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.ArrayTypeReference;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ImportReference;
import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.jdt.internal.compiler.ast.SingleTypeReference;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.jdt.internal.compiler.ast.TypeReference;
import org.eclipse.jdt.internal.compiler.env.*;
import org.eclipse.jdt.internal.compiler.env.ISourceField;
import org.eclipse.jdt.internal.compiler.env.ISourceImport;
import org.eclipse.jdt.internal.compiler.env.ISourceMethod;
import org.eclipse.jdt.internal.compiler.env.ISourceType;
import org.eclipse.jdt.internal.compiler.lookup.CompilerModifiers;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
import org.eclipse.jdt.internal.core.*;
import org.eclipse.jdt.internal.core.JavaElement;
import org.eclipse.jdt.internal.core.SourceFieldElementInfo;
import org.eclipse.jdt.internal.core.SourceMethodElementInfo;
public class ElementInfoConverter implements CompilerModifiers {
/*
* Convert a set of source type infos into a parsed compilation unit declaration
* The argument types are then all grouped in the same unit. The argument types must
* at least contain one type.
* Can optionally add local and anonymous types
*/
public static CompilationUnitDeclaration buildCompilationUnit(
SourceTypeElementInfo[] sourceTypes,
boolean needLocalTypes,
ProblemReporter problemReporter,
CompilationResult compilationResult) {
return
new ElementInfoConverter(needLocalTypes, problemReporter).convert(
sourceTypes,
compilationResult);
}
private boolean needLocalTypes; // local and anoymous types
private ProblemReporter problemReporter;
private CompilationUnitDeclaration unit;
private ElementInfoConverter(boolean needLocalTypes, ProblemReporter problemReporter) {
this.needLocalTypes = needLocalTypes;
this.problemReporter = problemReporter;
}
/*
* Convert an initializerinfo into a parsed initializer declaration
*/
private Initializer convert(InitializerElementInfo initializerInfo, CompilationResult compilationResult) {
Block block = new Block(0);
Initializer initializer = new Initializer(block, IConstants.AccDefault);
int start = initializerInfo.getDeclarationSourceStart();
int end = initializerInfo.getDeclarationSourceEnd();
initializer.name = initializerInfo.getName();
initializer.sourceStart = initializer.declarationSourceStart = start;
initializer.sourceEnd = initializer.declarationSourceEnd = end;
initializer.modifiers = initializerInfo.getModifiers();
/* convert local and anonymous types */
IJavaElement[] children = initializerInfo.getChildren();
int typesLength = children.length;
if (typesLength > 0) {
Statement[] statements = new Statement[typesLength];
for (int i = 0; i < typesLength; i++) {
JavaElement type = (JavaElement)children[i];
try {
TypeDeclaration localType = convert((SourceTypeElementInfo)type.getElementInfo(), compilationResult);
if ((localType.bits & ASTNode.IsAnonymousTypeMASK) != 0) {
QualifiedAllocationExpression expression = new QualifiedAllocationExpression(localType);
expression.type = localType.superclass;
localType.superclass = null;
localType.superInterfaces = null;
localType.allocation = expression;
statements[i] = expression;
} else {
statements[i] = localType;
}
} catch (JavaModelException e) {
// ignore
}
}
block.statements = statements;
}
return initializer;
}
/*
* Convert a source field info into a parsed field declaration
*/
private FieldDeclaration convert(SourceFieldElementInfo sourceField, CompilationResult compilationResult) {
FieldDeclaration field = new FieldDeclaration();
int start = sourceField.getNameSourceStart();
int end = sourceField.getNameSourceEnd();
field.name = sourceField.getName();
field.sourceStart = start;
field.sourceEnd = end;
field.type = createTypeReference(sourceField.getTypeName(), start, end);
field.declarationSourceStart = sourceField.getDeclarationSourceStart();
field.declarationSourceEnd = sourceField.getDeclarationSourceEnd();
field.modifiers = sourceField.getModifiers();
/* convert local and anonymous types */
if (this.needLocalTypes) {
IJavaElement[] children = sourceField.getChildren();
int typesLength = children.length;
if (typesLength > 0) {
ArrayInitializer initializer = new ArrayInitializer();
field.initialization = initializer;
Expression[] expressions = new Expression[typesLength];
initializer.expressions = expressions;
for (int i = 0; i < typesLength; i++) {
IJavaElement localType = children[i];
try {
TypeDeclaration anonymousLocalTypeDeclaration = convert((SourceTypeElementInfo)((JavaElement)localType).getElementInfo(),compilationResult);
QualifiedAllocationExpression expression = new QualifiedAllocationExpression(anonymousLocalTypeDeclaration);
expression.type = anonymousLocalTypeDeclaration.superclass;
anonymousLocalTypeDeclaration.superclass = null;
anonymousLocalTypeDeclaration.superInterfaces = null;
anonymousLocalTypeDeclaration.allocation = expression;
expressions[i] = expression;
} catch (JavaModelException e) {
// ignore
}
}
}
}
return field;
}
/*
* Convert a source method info into a parsed method/constructor declaration
*/
private AbstractMethodDeclaration convert(SourceMethodElementInfo sourceMethod, CompilationResult compilationResult) {
AbstractMethodDeclaration method;
/* only source positions available */
int start = sourceMethod.getNameSourceStart();
int end = sourceMethod.getNameSourceEnd();
if (sourceMethod.isConstructor()) {
ConstructorDeclaration decl = new ConstructorDeclaration(compilationResult);
decl.isDefaultConstructor = false;
method = decl;
} else {
MethodDeclaration decl = new MethodDeclaration(compilationResult);
/* convert return type */
decl.returnType =
createTypeReference(sourceMethod.getReturnTypeName(), start, end);
method = decl;
}
method.selector = sourceMethod.getSelector();
method.modifiers = sourceMethod.getModifiers();
method.sourceStart = start;
method.sourceEnd = end;
method.declarationSourceStart = sourceMethod.getDeclarationSourceStart();
method.declarationSourceEnd = sourceMethod.getDeclarationSourceEnd();
/* convert arguments */
char[][] argumentTypeNames = sourceMethod.getArgumentTypeNames();
char[][] argumentNames = sourceMethod.getArgumentNames();
int argumentCount = argumentTypeNames == null ? 0 : argumentTypeNames.length;
long position = (long) start << 32 + end;
method.arguments = new Argument[argumentCount];
for (int i = 0; i < argumentCount; i++) {
method.arguments[i] =
new Argument(
argumentNames[i],
position,
createTypeReference(argumentTypeNames[i], start, end),
AccDefault);
// do not care whether was final or not
}
/* convert thrown exceptions */
char[][] exceptionTypeNames = sourceMethod.getExceptionTypeNames();
int exceptionCount = exceptionTypeNames == null ? 0 : exceptionTypeNames.length;
method.thrownExceptions = new TypeReference[exceptionCount];
for (int i = 0; i < exceptionCount; i++) {
method.thrownExceptions[i] =
createTypeReference(exceptionTypeNames[i], start, end);
}
/* convert local and anonymous types */
if (this.needLocalTypes) {
IJavaElement[] children = sourceMethod.getChildren();
int typesLength = children.length;
if (typesLength != 0) {
Statement[] statements = new Statement[typesLength];
for (int i = 0; i < typesLength; i++) {
JavaElement type = (JavaElement)children[i];
try {
TypeDeclaration localType = convert((SourceTypeElementInfo)type.getElementInfo(), compilationResult);
if ((localType.bits & ASTNode.IsAnonymousTypeMASK) != 0) {
QualifiedAllocationExpression expression = new QualifiedAllocationExpression(localType);
expression.type = localType.superclass;
localType.superclass = null;
localType.superInterfaces = null;
localType.allocation = expression;
statements[i] = expression;
} else {
statements[i] = localType;
}
} catch (JavaModelException e) {
// ignore
}
}
method.statements = statements;
}
}
return method;
}
/*
* Convert a source type info into a parsed type declaration
*/
private TypeDeclaration convert(SourceTypeElementInfo sourceType, CompilationResult compilationResult) {
/* create type declaration - can be member type, local type or anonymous type */
TypeDeclaration type = new TypeDeclaration(compilationResult);
if (sourceType.getEnclosingType() == null) {
IType typeHandle = sourceType.getHandle();
try {
if (typeHandle.isAnonymous()) {
type.name = TypeDeclaration.ANONYMOUS_EMPTY_NAME;
type.bits |= ASTNode.AnonymousAndLocalMask;
} else {
if (typeHandle.isLocal()) {
type.bits |= ASTNode.IsLocalTypeMASK;
}
}
} catch (JavaModelException e) {
// could not figure, assume toplevel
}
} else {
type.bits |= ASTNode.IsMemberTypeMASK;
}
if ((type.bits & ASTNode.IsAnonymousTypeMASK) == 0) {
type.name = sourceType.getName();
}
int start, end; // only positions available
type.sourceStart = start = sourceType.getNameSourceStart();
type.sourceEnd = end = sourceType.getNameSourceEnd();
type.modifiers = sourceType.getModifiers();
type.declarationSourceStart = sourceType.getDeclarationSourceStart();
type.declarationSourceEnd = sourceType.getDeclarationSourceEnd();
type.bodyEnd = type.declarationSourceEnd;
/* set superclass and superinterfaces */
if (sourceType.getSuperclassName() != null)
type.superclass =
createTypeReference(sourceType.getSuperclassName(), start, end);
char[][] interfaceNames = sourceType.getInterfaceNames();
int interfaceCount = interfaceNames == null ? 0 : interfaceNames.length;
type.superInterfaces = new TypeReference[interfaceCount];
for (int i = 0; i < interfaceCount; i++) {
type.superInterfaces[i] = createTypeReference(interfaceNames[i], start, end);
}
/* convert member types */
ISourceType[] sourceMemberTypes = sourceType.getMemberTypes();
int sourceMemberTypeCount =
sourceMemberTypes == null ? 0 : sourceMemberTypes.length;
type.memberTypes = new TypeDeclaration[sourceMemberTypeCount];
for (int i = 0; i < sourceMemberTypeCount; i++) {
type.memberTypes[i] = convert((SourceTypeElementInfo)sourceMemberTypes[i], compilationResult);
}
/* convert fields and initializers */
ISourceField[] sourceFields = sourceType.getFields();
int sourceFieldCount = sourceFields == null ? 0 : sourceFields.length;
InitializerElementInfo[] initializers = null;
int initializerCount = 0;
if (this.needLocalTypes) {
initializers = sourceType.getInitializers();
initializerCount = initializers.length;
type.fields = new FieldDeclaration[initializerCount + sourceFieldCount];
for (int i = 0; i < initializerCount; i++) {
type.fields[i] = convert(initializers[i], compilationResult);
}
} else {
type.fields = new FieldDeclaration[sourceFieldCount];
}
int length = initializerCount + sourceFieldCount;
int index = 0;
for (int i = initializerCount; i < length; i++) {
type.fields[i] = convert((SourceFieldElementInfo)sourceFields[index++], compilationResult);
}
/* convert methods - need to add default constructor if necessary */
ISourceMethod[] sourceMethods = sourceType.getMethods();
int sourceMethodCount = sourceMethods == null ? 0 : sourceMethods.length;
/* source type has a constructor ? */
/* by default, we assume that one is needed. */
int neededCount = 0;
if (!type.isInterface()) {
neededCount = 1;
for (int i = 0; i < sourceMethodCount; i++) {
if (sourceMethods[i].isConstructor()) {
neededCount = 0;
// Does not need the extra constructor since one constructor already exists.
break;
}
}
}
type.methods = new AbstractMethodDeclaration[sourceMethodCount + neededCount];
if (neededCount != 0) { // add default constructor in first position
type.methods[0] = type.createsInternalConstructor(false, false);
}
boolean isInterface = type.isInterface();
for (int i = 0; i < sourceMethodCount; i++) {
AbstractMethodDeclaration method =convert((SourceMethodElementInfo)sourceMethods[i], compilationResult);
if (isInterface || method.isAbstract()) { // fix-up flag
method.modifiers |= AccSemicolonBody;
}
type.methods[neededCount + i] = method;
}
return type;
}
/*
* Convert a set of source element types into a parsed compilation unit declaration
* The argument types are then all grouped in the same unit. The argument types must
* at least contain one type.
*/
private CompilationUnitDeclaration convert(SourceTypeElementInfo[] sourceTypes, CompilationResult compilationResult) {
SourceTypeElementInfo sourceType = sourceTypes[0];
if (sourceType.getName() == null)
return null; // do a basic test that the sourceType is valid
this.unit = new CompilationUnitDeclaration(this.problemReporter, compilationResult, 0);
// not filled at this point
/* only positions available */
int start = sourceType.getNameSourceStart();
int end = sourceType.getNameSourceEnd();
/* convert package and imports */
if (sourceType.getPackageName() != null
&& sourceType.getPackageName().length > 0)
// if its null then it is defined in the default package
this.unit.currentPackage =
createImportReference(sourceType.getPackageName(), start, end, false, AccDefault);
ISourceImport[] sourceImports = sourceType.getImports();
int importCount = sourceImports == null ? 0 : sourceImports.length;
this.unit.imports = new ImportReference[importCount];
for (int i = 0; i < importCount; i++) {
ISourceImport sourceImport = sourceImports[i];
this.unit.imports[i] = createImportReference(
sourceImport.getName(),
sourceImport.getDeclarationSourceStart(),
sourceImport.getDeclarationSourceEnd(),
sourceImport.onDemand(),
sourceImport.getModifiers());
}
/* convert type(s) */
int typeCount = sourceTypes.length;
this.unit.types = new TypeDeclaration[typeCount];
for (int i = 0; i < typeCount; i++) {
this.unit.types[i] = convert(sourceTypes[i], compilationResult);
}
return this.unit;
}
/*
* Build an import reference from an import name, e.g. java.lang.*
*/
private ImportReference createImportReference(
char[] importName,
int start,
int end,
boolean onDemand,
int modifiers) {
char[][] qImportName = CharOperation.splitOn('.', importName);
long[] positions = new long[qImportName.length];
long position = (long) start << 32 + end;
for (int i = 0; i < qImportName.length; i++) {
positions[i] = position; // dummy positions
}
return new ImportReference(
qImportName,
positions,
onDemand,
modifiers);
}
/*
* Build a type reference from a readable name, e.g. java.lang.Object[][]
*/
private TypeReference createTypeReference(
char[] typeSignature,
int start,
int end) {
/* count identifiers and dimensions */
int max = typeSignature.length;
int dimStart = max;
int dim = 0;
int identCount = 1;
for (int i = 0; i < max; i++) {
switch (typeSignature[i]) {
case '[' :
if (dim == 0)
dimStart = i;
dim++;
break;
case '.' :
identCount++;
break;
}
}
/* rebuild identifiers and dimensions */
if (identCount == 1) { // simple type reference
if (dim == 0) {
return new SingleTypeReference(typeSignature, (((long) start )<< 32) + end);
} else {
char[] identifier = new char[dimStart];
System.arraycopy(typeSignature, 0, identifier, 0, dimStart);
return new ArrayTypeReference(identifier, dim, (((long) start) << 32) + end);
}
} else { // qualified type reference
long[] positions = new long[identCount];
long pos = (((long) start) << 32) + end;
for (int i = 0; i < identCount; i++) {
positions[i] = pos;
}
char[][] identifiers =
CharOperation.splitOn('.', typeSignature, 0, dimStart);
if (dim == 0) {
return new QualifiedTypeReference(identifiers, positions);
} else {
return new ArrayQualifiedTypeReference(identifiers, dim, positions);
}
}
}
}