/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.internal.core;
import org.eclipse.wst.jsdt.core.Flags;
import org.eclipse.wst.jsdt.core.IField;
import org.eclipse.wst.jsdt.core.IFunction;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.core.Signature;
import org.eclipse.wst.jsdt.core.compiler.CharOperation;
import org.eclipse.wst.jsdt.internal.compiler.CompilationResult;
import org.eclipse.wst.jsdt.internal.compiler.ast.ASTNode;
import org.eclipse.wst.jsdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.Argument;
import org.eclipse.wst.jsdt.internal.compiler.ast.ArrayQualifiedTypeReference;
import org.eclipse.wst.jsdt.internal.compiler.ast.ArrayTypeReference;
import org.eclipse.wst.jsdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.ImportReference;
import org.eclipse.wst.jsdt.internal.compiler.ast.MethodDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.QualifiedTypeReference;
import org.eclipse.wst.jsdt.internal.compiler.ast.SingleTypeReference;
import org.eclipse.wst.jsdt.internal.compiler.ast.TypeDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.ast.TypeReference;
import org.eclipse.wst.jsdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.wst.jsdt.internal.compiler.lookup.ExtraCompilerModifiers;
import org.eclipse.wst.jsdt.internal.core.util.Util;
/**
* Converter from a binary type to an AST type declaration.
*/
public class BinaryTypeConverter {
/**
* Convert a binary type into an AST type declaration and put it in the given compilation unit.
*/
public static TypeDeclaration buildTypeDeclaration(IType type, CompilationUnitDeclaration compilationUnit, CompilationResult compilationResult) throws JavaScriptModelException {
PackageFragment pkg = (PackageFragment) type.getPackageFragment();
char[][] packageName = Util.toCharArrays(pkg.names);
if (packageName.length > 0) {
compilationUnit.currentPackage = new ImportReference(packageName, new long[]{0}, false);
}
/* convert type */
TypeDeclaration typeDeclaration = convert(type, null, null, compilationResult);
IType alreadyComputedMember = type;
IType parent = type.getDeclaringType();
TypeDeclaration previousDeclaration = typeDeclaration;
while(parent != null) {
TypeDeclaration declaration = convert(parent, alreadyComputedMember, previousDeclaration, compilationResult);
alreadyComputedMember = parent;
previousDeclaration = declaration;
parent = parent.getDeclaringType();
}
compilationUnit.types = new TypeDeclaration[]{previousDeclaration};
return typeDeclaration;
}
private static FieldDeclaration convert(IField field, IType type) throws JavaScriptModelException {
FieldDeclaration fieldDeclaration = new FieldDeclaration();
fieldDeclaration.name = field.getElementName().toCharArray();
fieldDeclaration.type = createTypeReference(Signature.toString(field.getTypeSignature()).toCharArray());
fieldDeclaration.modifiers = field.getFlags();
return fieldDeclaration;
}
private static AbstractMethodDeclaration convert(IFunction method, IType type, CompilationResult compilationResult) throws JavaScriptModelException {
AbstractMethodDeclaration methodDeclaration;
if (method.isConstructor()) {
ConstructorDeclaration decl = new ConstructorDeclaration(compilationResult);
decl.isDefaultConstructor = false;
methodDeclaration = decl;
} else {
MethodDeclaration decl = new MethodDeclaration(compilationResult);
/* convert return type */
decl.returnType = createTypeReference(Signature.toString(method.getReturnType()).toCharArray());
methodDeclaration = decl;
}
methodDeclaration.selector = method.getElementName().toCharArray();
int flags = method.getFlags();
boolean isVarargs = Flags.isVarargs(flags);
methodDeclaration.modifiers = flags & ~Flags.AccVarargs;
/* convert arguments */
String[] argumentTypeNames = method.getParameterTypes();
String[] argumentNames = method.getParameterNames();
int argumentCount = argumentTypeNames == null ? 0 : argumentTypeNames.length;
methodDeclaration.arguments = new Argument[argumentCount];
for (int i = 0; i < argumentCount; i++) {
String argumentTypeName = argumentTypeNames[i];
TypeReference typeReference = createTypeReference(Signature.toString(argumentTypeName).toCharArray());
if (isVarargs && i == argumentCount-1) {
typeReference.bits |= ASTNode.IsVarArgs;
}
methodDeclaration.arguments[i] = new Argument(
argumentNames[i].toCharArray(),
0,
typeReference,
ClassFileConstants.AccDefault);
// do not care whether was final or not
}
return methodDeclaration;
}
private static TypeDeclaration convert(IType type, IType alreadyComputedMember,TypeDeclaration alreadyComputedMemberDeclaration, CompilationResult compilationResult) throws JavaScriptModelException {
/* create type declaration - can be member type */
TypeDeclaration typeDeclaration = new TypeDeclaration(compilationResult);
if (type.getDeclaringType() != null) {
typeDeclaration.bits |= ASTNode.IsMemberType;
}
typeDeclaration.name = type.getElementName().toCharArray();
typeDeclaration.modifiers = type.getFlags();
/* set superclass and superinterfaces */
if (type.getSuperclassName() != null) {
typeDeclaration.superclass = createTypeReference(type.getSuperclassName().toCharArray());
typeDeclaration.superclass.bits |= ASTNode.IsSuperType;
}
/* convert member types */
IType[] memberTypes = type.getTypes();
int memberTypeCount = memberTypes == null ? 0 : memberTypes.length;
typeDeclaration.memberTypes = new TypeDeclaration[memberTypeCount];
for (int i = 0; i < memberTypeCount; i++) {
if(alreadyComputedMember != null && alreadyComputedMember.getFullyQualifiedName().equals(memberTypes[i].getFullyQualifiedName())) {
typeDeclaration.memberTypes[i] = alreadyComputedMemberDeclaration;
} else {
typeDeclaration.memberTypes[i] = convert(memberTypes[i], null, null, compilationResult);
}
}
/* convert fields */
IField[] fields = type.getFields();
int fieldCount = fields == null ? 0 : fields.length;
typeDeclaration.fields = new FieldDeclaration[fieldCount];
for (int i = 0; i < fieldCount; i++) {
typeDeclaration.fields[i] = convert(fields[i], type);
}
/* convert methods - need to add default constructor if necessary */
IFunction[] methods = type.getFunctions();
int methodCount = methods == null ? 0 : methods.length;
/* source type has a constructor ? */
/* by default, we assume that one is needed. */
int neededCount = 1;
for (int i = 0; i < methodCount; i++) {
if (methods[i].isConstructor()) {
neededCount = 0;
// Does not need the extra constructor since one constructor already exists.
break;
}
}
typeDeclaration.methods = new AbstractMethodDeclaration[methodCount + neededCount];
if (neededCount != 0) { // add default constructor in first position
typeDeclaration.methods[0] = typeDeclaration.createDefaultConstructor(false, false);
}
boolean hasAbstractMethods = false;
for (int i = 0; i < methodCount; i++) {
AbstractMethodDeclaration method =convert(methods[i], type, compilationResult);
boolean isAbstract = method.isAbstract();
if (isAbstract) { // fix-up flag
method.modifiers |= ExtraCompilerModifiers.AccSemicolonBody;
}
if (isAbstract) {
hasAbstractMethods = true;
}
typeDeclaration.methods[neededCount + i] = method;
}
if (hasAbstractMethods) {
typeDeclaration.bits |= ASTNode.HasAbstractMethods;
}
return typeDeclaration;
}
private static TypeReference createTypeReference(char[] type) {
/* count identifiers and dimensions */
int max = type.length;
int dimStart = max;
int dim = 0;
int identCount = 1;
for (int i = 0; i < max; i++) {
switch (type[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(type, 0);
} else {
char[] identifier = new char[dimStart];
System.arraycopy(type, 0, identifier, 0, dimStart);
return new ArrayTypeReference(identifier, dim, 0);
}
} else { // qualified type reference
char[][] identifiers = CharOperation.splitOn('.', type, 0, dimStart);
if (dim == 0) {
return new QualifiedTypeReference(identifiers, new long[identifiers.length]);
} else {
return new ArrayQualifiedTypeReference(identifiers, dim, new long[identifiers.length]);
}
}
}
}