private MethodDeclaration createCanEqual(EclipseNode type, ASTNode source) {
/* public boolean canEqual(final java.lang.Object other) {
* return other instanceof MyType;
* }
*/
int pS = source.sourceStart;
int pE = source.sourceEnd;
long p = (long) pS << 32 | pE;
char[] otherName = "other".toCharArray();
MethodDeclaration method =
new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
Eclipse.setGeneratedBy(method, source);
method.modifiers = EclipseHandlerUtil.toEclipseModifier(AccessLevel.PUBLIC);
method.returnType = TypeReference.baseTypeReference(TypeIds.T_boolean, 0);
method.returnType.sourceStart = pS;
method.returnType.sourceEnd = pE;
Eclipse.setGeneratedBy(method.returnType, source);
method.selector = "canEqual".toCharArray();
method.thrownExceptions = null;
method.typeParameters = null;
method.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
TypeReference objectRef =
new QualifiedTypeReference(TypeConstants.JAVA_LANG_OBJECT, new long[] {p, p, p});
Eclipse.setGeneratedBy(objectRef, source);
method.arguments = new Argument[] {new Argument(otherName, 0, objectRef, Modifier.FINAL)};
method.arguments[0].sourceStart = pS;
method.arguments[0].sourceEnd = pE;
Eclipse.setGeneratedBy(method.arguments[0], source);
SingleNameReference otherRef = new SingleNameReference(otherName, p);
Eclipse.setGeneratedBy(otherRef, source);
SingleTypeReference typeReference =
new SingleTypeReference(((TypeDeclaration) type.get()).name, p);
Eclipse.setGeneratedBy(typeReference, source);
InstanceOfExpression instanceOf = new InstanceOfExpression(otherRef, typeReference);
instanceOf.sourceStart = pS;
instanceOf.sourceEnd = pE;
Eclipse.setGeneratedBy(instanceOf, source);
ReturnStatement returnStatement = new ReturnStatement(instanceOf, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
method.statements = new Statement[] {returnStatement};
return method;
}
/** Give 2 clones! */
private Expression longToIntForHashCode(Expression ref1, Expression ref2, ASTNode source) {
int pS = source.sourceStart, pE = source.sourceEnd;
/* (int)(ref >>> 32 ^ ref) */
IntLiteral int32 = new IntLiteral("32".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(int32, source);
BinaryExpression higherBits =
new BinaryExpression(ref1, int32, OperatorIds.UNSIGNED_RIGHT_SHIFT);
Eclipse.setGeneratedBy(higherBits, source);
BinaryExpression xorParts = new BinaryExpression(ref2, higherBits, OperatorIds.XOR);
Eclipse.setGeneratedBy(xorParts, source);
TypeReference intRef = TypeReference.baseTypeReference(TypeIds.T_int, 0);
intRef.sourceStart = pS;
intRef.sourceEnd = pE;
Eclipse.setGeneratedBy(intRef, source);
CastExpression expr = new CastExpression(xorParts, intRef);
expr.sourceStart = pS;
expr.sourceEnd = pE;
Eclipse.setGeneratedBy(expr, source);
return expr;
}
public TypeReference getTypeReference(int dim) {
/* build a Reference on a variable that may be qualified or not
* This variable is a type reference and dim will be its dimensions
*/
Annotation[][] annotationsOnDimensions = null;
TypeReference ref;
int length = this.identifierLengthStack[this.identifierLengthPtr--];
if (length < 0) { // flag for precompiled type reference on base types
annotationsOnDimensions = getAnnotationsOnDimensions(dim);
ref = TypeReference.baseTypeReference(-length, dim, annotationsOnDimensions);
ref.sourceStart = this.intStack[this.intPtr--];
if (dim == 0) {
ref.sourceEnd = this.intStack[this.intPtr--];
} else {
this.intPtr--; // no need to use this position as it is an array
ref.sourceEnd = this.rBracketPosition;
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(
ref.getParameterizedTypeName(), ref.sourceStart, ref.sourceEnd);
}
} else {
int numberOfIdentifiers =
this.genericsIdentifiersLengthStack[this.genericsIdentifiersLengthPtr--];
if (length != numberOfIdentifiers || this.genericsLengthStack[this.genericsLengthPtr] != 0) {
// generic type
ref = getTypeReferenceForGenericType(dim, length, numberOfIdentifiers);
if (this.reportReferenceInfo) {
if (length == 1 && numberOfIdentifiers == 1) {
ParameterizedSingleTypeReference parameterizedSingleTypeReference =
(ParameterizedSingleTypeReference) ref;
this.requestor.acceptTypeReference(
parameterizedSingleTypeReference.token,
parameterizedSingleTypeReference.sourceStart);
} else {
ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference =
(ParameterizedQualifiedTypeReference) ref;
this.requestor.acceptTypeReference(
parameterizedQualifiedTypeReference.tokens,
parameterizedQualifiedTypeReference.sourceStart,
parameterizedQualifiedTypeReference.sourceEnd);
}
}
} else if (length == 1) {
// single type reference
this.genericsLengthPtr--; // pop the 0
if (dim == 0) {
ref =
new SingleTypeReference(
this.identifierStack[this.identifierPtr],
this.identifierPositionStack[this.identifierPtr--]);
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(((SingleTypeReference) ref).token, ref.sourceStart);
}
} else {
annotationsOnDimensions = getAnnotationsOnDimensions(dim);
ref =
new ArrayTypeReference(
this.identifierStack[this.identifierPtr],
dim,
annotationsOnDimensions,
this.identifierPositionStack[this.identifierPtr--]);
ref.sourceEnd = this.endPosition;
if (annotationsOnDimensions != null) {
ref.bits |= ASTNode.HasTypeAnnotations;
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(((ArrayTypeReference) ref).token, ref.sourceStart);
}
}
} else { // Qualified type reference
this.genericsLengthPtr--;
char[][] tokens = new char[length][];
this.identifierPtr -= length;
long[] positions = new long[length];
System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
System.arraycopy(
this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
if (dim == 0) {
ref = new QualifiedTypeReference(tokens, positions);
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(
((QualifiedTypeReference) ref).tokens, ref.sourceStart, ref.sourceEnd);
}
} else {
annotationsOnDimensions = getAnnotationsOnDimensions(dim);
ref = new ArrayQualifiedTypeReference(tokens, dim, annotationsOnDimensions, positions);
ref.sourceEnd = this.endPosition;
if (annotationsOnDimensions != null) {
ref.bits |= ASTNode.HasTypeAnnotations;
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(
((ArrayQualifiedTypeReference) ref).tokens, ref.sourceStart, ref.sourceEnd);
}
}
}
}
int levels = ref.getAnnotatableLevels();
for (int i = levels - 1; i >= 0; i--) {
if ((length = this.typeAnnotationLengthStack[this.typeAnnotationLengthPtr--]) != 0) {
if (ref.annotations == null) ref.annotations = new Annotation[levels][];
System.arraycopy(
this.typeAnnotationStack,
(this.typeAnnotationPtr -= length) + 1,
ref.annotations[i] = new Annotation[length],
0,
length);
if (i == 0) {
ref.sourceStart = ref.annotations[0][0].sourceStart;
}
ref.bits |= ASTNode.HasTypeAnnotations;
}
}
return ref;
}
public TypeReference getTypeReference(int dim) {
/* build a Reference on a variable that may be qualified or not
* This variable is a type reference and dim will be its dimensions
*/
int length = this.identifierLengthStack[this.identifierLengthPtr--];
if (length < 0) { // flag for precompiled type reference on base types
TypeReference ref = TypeReference.baseTypeReference(-length, dim);
ref.sourceStart = this.intStack[this.intPtr--];
if (dim == 0) {
ref.sourceEnd = this.intStack[this.intPtr--];
} else {
this.intPtr--; // no need to use this position as it is an array
ref.sourceEnd = this.endPosition;
}
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(
ref.getParameterizedTypeName(), ref.sourceStart, ref.sourceEnd);
}
return ref;
} else {
int numberOfIdentifiers =
this.genericsIdentifiersLengthStack[this.genericsIdentifiersLengthPtr--];
if (length != numberOfIdentifiers || this.genericsLengthStack[this.genericsLengthPtr] != 0) {
// generic type
TypeReference ref = getTypeReferenceForGenericType(dim, length, numberOfIdentifiers);
if (this.reportReferenceInfo) {
if (length == 1 && numberOfIdentifiers == 1) {
ParameterizedSingleTypeReference parameterizedSingleTypeReference =
(ParameterizedSingleTypeReference) ref;
this.requestor.acceptTypeReference(
parameterizedSingleTypeReference.token,
parameterizedSingleTypeReference.sourceStart);
} else {
ParameterizedQualifiedTypeReference parameterizedQualifiedTypeReference =
(ParameterizedQualifiedTypeReference) ref;
this.requestor.acceptTypeReference(
parameterizedQualifiedTypeReference.tokens,
parameterizedQualifiedTypeReference.sourceStart,
parameterizedQualifiedTypeReference.sourceEnd);
}
}
return ref;
} else if (length == 1) {
// single variable reference
this.genericsLengthPtr--; // pop the 0
if (dim == 0) {
SingleTypeReference ref =
new SingleTypeReference(
this.identifierStack[this.identifierPtr],
this.identifierPositionStack[this.identifierPtr--]);
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(ref.token, ref.sourceStart);
}
return ref;
} else {
ArrayTypeReference ref =
new ArrayTypeReference(
this.identifierStack[this.identifierPtr],
dim,
this.identifierPositionStack[this.identifierPtr--]);
ref.sourceEnd = this.endPosition;
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(ref.token, ref.sourceStart);
}
return ref;
}
} else { // Qualified variable reference
this.genericsLengthPtr--;
char[][] tokens = new char[length][];
this.identifierPtr -= length;
long[] positions = new long[length];
System.arraycopy(this.identifierStack, this.identifierPtr + 1, tokens, 0, length);
System.arraycopy(
this.identifierPositionStack, this.identifierPtr + 1, positions, 0, length);
if (dim == 0) {
QualifiedTypeReference ref = new QualifiedTypeReference(tokens, positions);
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(ref.tokens, ref.sourceStart, ref.sourceEnd);
}
return ref;
} else {
ArrayQualifiedTypeReference ref = new ArrayQualifiedTypeReference(tokens, dim, positions);
ref.sourceEnd = this.endPosition;
if (this.reportReferenceInfo) {
this.requestor.acceptTypeReference(ref.tokens, ref.sourceStart, ref.sourceEnd);
}
return ref;
}
}
}
}
private MethodDeclaration createEquals(
EclipseNode type,
Collection<EclipseNode> fields,
boolean callSuper,
ASTNode source,
FieldAccess fieldAccess,
boolean needsCanEqual) {
int pS = source.sourceStart;
int pE = source.sourceEnd;
long p = (long) pS << 32 | pE;
TypeDeclaration typeDecl = (TypeDeclaration) type.get();
MethodDeclaration method =
new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
Eclipse.setGeneratedBy(method, source);
method.modifiers = EclipseHandlerUtil.toEclipseModifier(AccessLevel.PUBLIC);
method.returnType = TypeReference.baseTypeReference(TypeIds.T_boolean, 0);
method.returnType.sourceStart = pS;
method.returnType.sourceEnd = pE;
Eclipse.setGeneratedBy(method.returnType, source);
method.annotations =
new Annotation[] {makeMarkerAnnotation(TypeConstants.JAVA_LANG_OVERRIDE, source)};
method.selector = "equals".toCharArray();
method.thrownExceptions = null;
method.typeParameters = null;
method.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
TypeReference objectRef =
new QualifiedTypeReference(TypeConstants.JAVA_LANG_OBJECT, new long[] {p, p, p});
Eclipse.setGeneratedBy(objectRef, source);
method.arguments =
new Argument[] {new Argument(new char[] {'o'}, 0, objectRef, Modifier.FINAL)};
method.arguments[0].sourceStart = pS;
method.arguments[0].sourceEnd = pE;
Eclipse.setGeneratedBy(method.arguments[0], source);
List<Statement> statements = new ArrayList<Statement>();
/* if (o == this) return true; */ {
SingleNameReference oRef = new SingleNameReference(new char[] {'o'}, p);
Eclipse.setGeneratedBy(oRef, source);
ThisReference thisRef = new ThisReference(pS, pE);
Eclipse.setGeneratedBy(thisRef, source);
EqualExpression otherEqualsThis = new EqualExpression(oRef, thisRef, OperatorIds.EQUAL_EQUAL);
Eclipse.setGeneratedBy(otherEqualsThis, source);
TrueLiteral trueLiteral = new TrueLiteral(pS, pE);
Eclipse.setGeneratedBy(trueLiteral, source);
ReturnStatement returnTrue = new ReturnStatement(trueLiteral, pS, pE);
Eclipse.setGeneratedBy(returnTrue, source);
IfStatement ifOtherEqualsThis = new IfStatement(otherEqualsThis, returnTrue, pS, pE);
Eclipse.setGeneratedBy(ifOtherEqualsThis, source);
statements.add(ifOtherEqualsThis);
}
/* if (!(o instanceof MyType) return false; */ {
SingleNameReference oRef = new SingleNameReference(new char[] {'o'}, p);
Eclipse.setGeneratedBy(oRef, source);
SingleTypeReference typeReference = new SingleTypeReference(typeDecl.name, p);
Eclipse.setGeneratedBy(typeReference, source);
InstanceOfExpression instanceOf = new InstanceOfExpression(oRef, typeReference);
instanceOf.sourceStart = pS;
instanceOf.sourceEnd = pE;
Eclipse.setGeneratedBy(instanceOf, source);
Expression notInstanceOf = new UnaryExpression(instanceOf, OperatorIds.NOT);
Eclipse.setGeneratedBy(notInstanceOf, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnFalse, source);
IfStatement ifNotInstanceOf = new IfStatement(notInstanceOf, returnFalse, pS, pE);
Eclipse.setGeneratedBy(ifNotInstanceOf, source);
statements.add(ifNotInstanceOf);
}
char[] otherName = "other".toCharArray();
/* MyType<?> other = (MyType<?>) o; */ {
if (!fields.isEmpty() || needsCanEqual) {
LocalDeclaration other = new LocalDeclaration(otherName, pS, pE);
other.modifiers |= ClassFileConstants.AccFinal;
Eclipse.setGeneratedBy(other, source);
char[] typeName = typeDecl.name;
Expression targetType;
if (typeDecl.typeParameters == null || typeDecl.typeParameters.length == 0) {
targetType = new SingleNameReference(((TypeDeclaration) type.get()).name, p);
Eclipse.setGeneratedBy(targetType, source);
other.type = new SingleTypeReference(typeName, p);
Eclipse.setGeneratedBy(other.type, source);
} else {
TypeReference[] typeArgs = new TypeReference[typeDecl.typeParameters.length];
for (int i = 0; i < typeArgs.length; i++) {
typeArgs[i] = new Wildcard(Wildcard.UNBOUND);
typeArgs[i].sourceStart = pS;
typeArgs[i].sourceEnd = pE;
Eclipse.setGeneratedBy(typeArgs[i], source);
}
targetType = new ParameterizedSingleTypeReference(typeName, typeArgs, 0, p);
Eclipse.setGeneratedBy(targetType, source);
other.type =
new ParameterizedSingleTypeReference(typeName, copyTypes(typeArgs, source), 0, p);
Eclipse.setGeneratedBy(other.type, source);
}
NameReference oRef = new SingleNameReference(new char[] {'o'}, p);
Eclipse.setGeneratedBy(oRef, source);
other.initialization = new CastExpression(oRef, targetType);
Eclipse.setGeneratedBy(other.initialization, source);
statements.add(other);
}
}
/* if (!other.canEqual((java.lang.Object) this)) return false; */ {
if (needsCanEqual) {
MessageSend otherCanEqual = new MessageSend();
otherCanEqual.sourceStart = pS;
otherCanEqual.sourceEnd = pE;
Eclipse.setGeneratedBy(otherCanEqual, source);
otherCanEqual.receiver = new SingleNameReference(otherName, p);
Eclipse.setGeneratedBy(otherCanEqual.receiver, source);
otherCanEqual.selector = "canEqual".toCharArray();
ThisReference thisReference = new ThisReference(pS, pE);
Eclipse.setGeneratedBy(thisReference, source);
CastExpression castThisRef =
new CastExpression(
thisReference, generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_OBJECT));
Eclipse.setGeneratedBy(castThisRef, source);
castThisRef.sourceStart = pS;
castThisRef.sourceEnd = pE;
otherCanEqual.arguments = new Expression[] {castThisRef};
Expression notOtherCanEqual = new UnaryExpression(otherCanEqual, OperatorIds.NOT);
Eclipse.setGeneratedBy(notOtherCanEqual, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnFalse, source);
IfStatement ifNotCanEqual = new IfStatement(notOtherCanEqual, returnFalse, pS, pE);
Eclipse.setGeneratedBy(ifNotCanEqual, source);
statements.add(ifNotCanEqual);
}
}
/* if (!super.equals(o)) return false; */
if (callSuper) {
MessageSend callToSuper = new MessageSend();
callToSuper.sourceStart = pS;
callToSuper.sourceEnd = pE;
Eclipse.setGeneratedBy(callToSuper, source);
callToSuper.receiver = new SuperReference(pS, pE);
Eclipse.setGeneratedBy(callToSuper.receiver, source);
callToSuper.selector = "equals".toCharArray();
SingleNameReference oRef = new SingleNameReference(new char[] {'o'}, p);
Eclipse.setGeneratedBy(oRef, source);
callToSuper.arguments = new Expression[] {oRef};
Expression superNotEqual = new UnaryExpression(callToSuper, OperatorIds.NOT);
Eclipse.setGeneratedBy(superNotEqual, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnFalse, source);
IfStatement ifSuperEquals = new IfStatement(superNotEqual, returnFalse, pS, pE);
Eclipse.setGeneratedBy(ifSuperEquals, source);
statements.add(ifSuperEquals);
}
for (EclipseNode field : fields) {
TypeReference fType = getFieldType(field, fieldAccess);
char[] token = fType.getLastToken();
Expression thisFieldAccessor = createFieldAccessor(field, fieldAccess, source);
Expression otherFieldAccessor = createFieldAccessor(field, fieldAccess, source, otherName);
if (fType.dimensions() == 0 && token != null) {
if (Arrays.equals(TypeConstants.FLOAT, token)) {
statements.add(
generateCompareFloatOrDouble(
thisFieldAccessor, otherFieldAccessor, "Float".toCharArray(), source));
} else if (Arrays.equals(TypeConstants.DOUBLE, token)) {
statements.add(
generateCompareFloatOrDouble(
thisFieldAccessor, otherFieldAccessor, "Double".toCharArray(), source));
} else if (BUILT_IN_TYPES.contains(new String(token))) {
EqualExpression fieldsNotEqual =
new EqualExpression(thisFieldAccessor, otherFieldAccessor, OperatorIds.NOT_EQUAL);
Eclipse.setGeneratedBy(fieldsNotEqual, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnStatement = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
IfStatement ifStatement = new IfStatement(fieldsNotEqual, returnStatement, pS, pE);
Eclipse.setGeneratedBy(ifStatement, source);
statements.add(ifStatement);
} else /* objects */ {
NullLiteral nullLiteral = new NullLiteral(pS, pE);
Eclipse.setGeneratedBy(nullLiteral, source);
EqualExpression fieldIsNull =
new EqualExpression(thisFieldAccessor, nullLiteral, OperatorIds.EQUAL_EQUAL);
nullLiteral = new NullLiteral(pS, pE);
Eclipse.setGeneratedBy(nullLiteral, source);
EqualExpression otherFieldIsntNull =
new EqualExpression(otherFieldAccessor, nullLiteral, OperatorIds.NOT_EQUAL);
MessageSend equalsCall = new MessageSend();
equalsCall.sourceStart = pS;
equalsCall.sourceEnd = pE;
Eclipse.setGeneratedBy(equalsCall, source);
equalsCall.receiver = createFieldAccessor(field, fieldAccess, source);
equalsCall.selector = "equals".toCharArray();
Expression equalsArg = createFieldAccessor(field, fieldAccess, source, otherName);
CastExpression castEqualsArg =
new CastExpression(
equalsArg, generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_OBJECT));
Eclipse.setGeneratedBy(castEqualsArg, source);
castEqualsArg.sourceStart = pS;
castEqualsArg.sourceEnd = pE;
equalsCall.arguments = new Expression[] {castEqualsArg};
UnaryExpression fieldsNotEqual = new UnaryExpression(equalsCall, OperatorIds.NOT);
fieldsNotEqual.sourceStart = pS;
fieldsNotEqual.sourceEnd = pE;
Eclipse.setGeneratedBy(fieldsNotEqual, source);
ConditionalExpression fullEquals =
new ConditionalExpression(fieldIsNull, otherFieldIsntNull, fieldsNotEqual);
fullEquals.sourceStart = pS;
fullEquals.sourceEnd = pE;
Eclipse.setGeneratedBy(fullEquals, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnStatement = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
IfStatement ifStatement = new IfStatement(fullEquals, returnStatement, pS, pE);
Eclipse.setGeneratedBy(ifStatement, source);
statements.add(ifStatement);
}
} else if (fType.dimensions() > 0 && token != null) {
MessageSend arraysEqualCall = new MessageSend();
arraysEqualCall.sourceStart = pS;
arraysEqualCall.sourceEnd = pE;
Eclipse.setGeneratedBy(arraysEqualCall, source);
arraysEqualCall.receiver =
generateQualifiedNameRef(
source, TypeConstants.JAVA, TypeConstants.UTIL, "Arrays".toCharArray());
if (fType.dimensions() > 1 || !BUILT_IN_TYPES.contains(new String(token))) {
arraysEqualCall.selector = "deepEquals".toCharArray();
} else {
arraysEqualCall.selector = "equals".toCharArray();
}
arraysEqualCall.arguments = new Expression[] {thisFieldAccessor, otherFieldAccessor};
UnaryExpression arraysNotEqual = new UnaryExpression(arraysEqualCall, OperatorIds.NOT);
arraysNotEqual.sourceStart = pS;
arraysNotEqual.sourceEnd = pE;
Eclipse.setGeneratedBy(arraysNotEqual, source);
FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
Eclipse.setGeneratedBy(falseLiteral, source);
ReturnStatement returnStatement = new ReturnStatement(falseLiteral, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
IfStatement ifStatement = new IfStatement(arraysNotEqual, returnStatement, pS, pE);
Eclipse.setGeneratedBy(ifStatement, source);
statements.add(ifStatement);
}
}
/* return true; */ {
TrueLiteral trueLiteral = new TrueLiteral(pS, pE);
Eclipse.setGeneratedBy(trueLiteral, source);
ReturnStatement returnStatement = new ReturnStatement(trueLiteral, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
statements.add(returnStatement);
}
method.statements = statements.toArray(new Statement[statements.size()]);
return method;
}
private MethodDeclaration createHashCode(
EclipseNode type,
Collection<EclipseNode> fields,
boolean callSuper,
ASTNode source,
FieldAccess fieldAccess) {
int pS = source.sourceStart, pE = source.sourceEnd;
long p = (long) pS << 32 | pE;
MethodDeclaration method =
new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
Eclipse.setGeneratedBy(method, source);
method.modifiers = EclipseHandlerUtil.toEclipseModifier(AccessLevel.PUBLIC);
method.returnType = TypeReference.baseTypeReference(TypeIds.T_int, 0);
Eclipse.setGeneratedBy(method.returnType, source);
method.annotations =
new Annotation[] {makeMarkerAnnotation(TypeConstants.JAVA_LANG_OVERRIDE, source)};
method.selector = "hashCode".toCharArray();
method.thrownExceptions = null;
method.typeParameters = null;
method.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
method.arguments = null;
List<Statement> statements = new ArrayList<Statement>();
List<Expression> intoResult = new ArrayList<Expression>();
final char[] PRIME = "PRIME".toCharArray();
final char[] RESULT = "result".toCharArray();
final boolean isEmpty = fields.isEmpty();
/* final int PRIME = 31; */ {
/* Without fields, PRIME isn't used, and that would trigger a 'local variable not used' warning. */
if (!isEmpty || callSuper) {
LocalDeclaration primeDecl = new LocalDeclaration(PRIME, pS, pE);
Eclipse.setGeneratedBy(primeDecl, source);
primeDecl.modifiers |= Modifier.FINAL;
primeDecl.type = TypeReference.baseTypeReference(TypeIds.T_int, 0);
primeDecl.type.sourceStart = pS;
primeDecl.type.sourceEnd = pE;
Eclipse.setGeneratedBy(primeDecl.type, source);
primeDecl.initialization = new IntLiteral("31".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(primeDecl.initialization, source);
statements.add(primeDecl);
}
}
/* int result = 1; */ {
LocalDeclaration resultDecl = new LocalDeclaration(RESULT, pS, pE);
Eclipse.setGeneratedBy(resultDecl, source);
resultDecl.initialization = new IntLiteral("1".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(resultDecl.initialization, source);
resultDecl.type = TypeReference.baseTypeReference(TypeIds.T_int, 0);
resultDecl.type.sourceStart = pS;
resultDecl.type.sourceEnd = pE;
Eclipse.setGeneratedBy(resultDecl.type, source);
statements.add(resultDecl);
}
if (callSuper) {
MessageSend callToSuper = new MessageSend();
Eclipse.setGeneratedBy(callToSuper, source);
callToSuper.sourceStart = pS;
callToSuper.sourceEnd = pE;
callToSuper.receiver = new SuperReference(pS, pE);
Eclipse.setGeneratedBy(callToSuper.receiver, source);
callToSuper.selector = "hashCode".toCharArray();
intoResult.add(callToSuper);
}
int tempCounter = 0;
for (EclipseNode field : fields) {
TypeReference fType = getFieldType(field, fieldAccess);
char[] token = fType.getLastToken();
Expression fieldAccessor = createFieldAccessor(field, fieldAccess, source);
if (fType.dimensions() == 0 && token != null) {
if (Arrays.equals(TypeConstants.FLOAT, token)) {
/* Float.floatToIntBits(fieldName) */
MessageSend floatToIntBits = new MessageSend();
floatToIntBits.sourceStart = pS;
floatToIntBits.sourceEnd = pE;
Eclipse.setGeneratedBy(floatToIntBits, source);
floatToIntBits.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_FLOAT);
floatToIntBits.selector = "floatToIntBits".toCharArray();
floatToIntBits.arguments = new Expression[] {fieldAccessor};
intoResult.add(floatToIntBits);
} else if (Arrays.equals(TypeConstants.DOUBLE, token)) {
/* longToIntForHashCode(Double.doubleToLongBits(fieldName)) */
MessageSend doubleToLongBits = new MessageSend();
doubleToLongBits.sourceStart = pS;
doubleToLongBits.sourceEnd = pE;
Eclipse.setGeneratedBy(doubleToLongBits, source);
doubleToLongBits.receiver =
generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_DOUBLE);
doubleToLongBits.selector = "doubleToLongBits".toCharArray();
doubleToLongBits.arguments = new Expression[] {fieldAccessor};
final char[] tempName = ("temp" + ++tempCounter).toCharArray();
LocalDeclaration tempVar = new LocalDeclaration(tempName, pS, pE);
Eclipse.setGeneratedBy(tempVar, source);
tempVar.initialization = doubleToLongBits;
tempVar.type = TypeReference.baseTypeReference(TypeIds.T_long, 0);
tempVar.type.sourceStart = pS;
tempVar.type.sourceEnd = pE;
Eclipse.setGeneratedBy(tempVar.type, source);
tempVar.modifiers = Modifier.FINAL;
statements.add(tempVar);
SingleNameReference copy1 = new SingleNameReference(tempName, p);
Eclipse.setGeneratedBy(copy1, source);
SingleNameReference copy2 = new SingleNameReference(tempName, p);
Eclipse.setGeneratedBy(copy2, source);
intoResult.add(longToIntForHashCode(copy1, copy2, source));
} else if (Arrays.equals(TypeConstants.BOOLEAN, token)) {
/* booleanField ? 1231 : 1237 */
IntLiteral int1231 = new IntLiteral("1231".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(int1231, source);
IntLiteral int1237 = new IntLiteral("1237".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(int1237, source);
ConditionalExpression int1231or1237 =
new ConditionalExpression(fieldAccessor, int1231, int1237);
Eclipse.setGeneratedBy(int1231or1237, source);
intoResult.add(int1231or1237);
} else if (Arrays.equals(TypeConstants.LONG, token)) {
intoResult.add(
longToIntForHashCode(
fieldAccessor, createFieldAccessor(field, fieldAccess, source), source));
} else if (BUILT_IN_TYPES.contains(new String(token))) {
intoResult.add(fieldAccessor);
} else /* objects */ {
/* this.fieldName == null ? 0 : this.fieldName.hashCode() */
MessageSend hashCodeCall = new MessageSend();
hashCodeCall.sourceStart = pS;
hashCodeCall.sourceEnd = pE;
Eclipse.setGeneratedBy(hashCodeCall, source);
hashCodeCall.receiver = createFieldAccessor(field, fieldAccess, source);
hashCodeCall.selector = "hashCode".toCharArray();
NullLiteral nullLiteral = new NullLiteral(pS, pE);
Eclipse.setGeneratedBy(nullLiteral, source);
EqualExpression objIsNull =
new EqualExpression(fieldAccessor, nullLiteral, OperatorIds.EQUAL_EQUAL);
Eclipse.setGeneratedBy(objIsNull, source);
IntLiteral int0 = new IntLiteral("0".toCharArray(), pS, pE);
Eclipse.setGeneratedBy(int0, source);
ConditionalExpression nullOrHashCode =
new ConditionalExpression(objIsNull, int0, hashCodeCall);
nullOrHashCode.sourceStart = pS;
nullOrHashCode.sourceEnd = pE;
Eclipse.setGeneratedBy(nullOrHashCode, source);
intoResult.add(nullOrHashCode);
}
} else if (fType.dimensions() > 0 && token != null) {
/* Arrays.deepHashCode(array) //just hashCode for simple arrays */
MessageSend arraysHashCodeCall = new MessageSend();
arraysHashCodeCall.sourceStart = pS;
arraysHashCodeCall.sourceEnd = pE;
Eclipse.setGeneratedBy(arraysHashCodeCall, source);
arraysHashCodeCall.receiver =
generateQualifiedNameRef(
source, TypeConstants.JAVA, TypeConstants.UTIL, "Arrays".toCharArray());
if (fType.dimensions() > 1 || !BUILT_IN_TYPES.contains(new String(token))) {
arraysHashCodeCall.selector = "deepHashCode".toCharArray();
} else {
arraysHashCodeCall.selector = "hashCode".toCharArray();
}
arraysHashCodeCall.arguments = new Expression[] {fieldAccessor};
intoResult.add(arraysHashCodeCall);
}
}
/* fold each intoResult entry into:
result = result * PRIME + (item); */ {
for (Expression ex : intoResult) {
SingleNameReference resultRef = new SingleNameReference(RESULT, p);
Eclipse.setGeneratedBy(resultRef, source);
SingleNameReference primeRef = new SingleNameReference(PRIME, p);
Eclipse.setGeneratedBy(primeRef, source);
BinaryExpression multiplyByPrime =
new BinaryExpression(resultRef, primeRef, OperatorIds.MULTIPLY);
multiplyByPrime.sourceStart = pS;
multiplyByPrime.sourceEnd = pE;
Eclipse.setGeneratedBy(multiplyByPrime, source);
BinaryExpression addItem = new BinaryExpression(multiplyByPrime, ex, OperatorIds.PLUS);
addItem.sourceStart = pS;
addItem.sourceEnd = pE;
Eclipse.setGeneratedBy(addItem, source);
resultRef = new SingleNameReference(RESULT, p);
Eclipse.setGeneratedBy(resultRef, source);
Assignment assignment = new Assignment(resultRef, addItem, pE);
assignment.sourceStart = pS;
assignment.sourceEnd = pE;
Eclipse.setGeneratedBy(assignment, source);
statements.add(assignment);
}
}
/* return result; */ {
SingleNameReference resultRef = new SingleNameReference(RESULT, p);
Eclipse.setGeneratedBy(resultRef, source);
ReturnStatement returnStatement = new ReturnStatement(resultRef, pS, pE);
Eclipse.setGeneratedBy(returnStatement, source);
statements.add(returnStatement);
}
method.statements = statements.toArray(new Statement[statements.size()]);
return method;
}