org.eclipse.jdt.core.dom.Assignment#setLeftHandSide ( )源码实例Demo

private Block createWithMethodBody(AST ast, BuilderField builderField) {
    String originalFieldName = builderField.getOriginalFieldName();
    String builderFieldName = builderField.getBuilderFieldName();

    Block newBlock = ast.newBlock();
    ReturnStatement builderReturnStatement = ast.newReturnStatement();
    builderReturnStatement.setExpression(ast.newThisExpression());

    Assignment newAssignment = ast.newAssignment();

    FieldAccess fieldAccess = ast.newFieldAccess();
    fieldAccess.setExpression(ast.newThisExpression());
    fieldAccess.setName(ast.newSimpleName(originalFieldName));
    newAssignment.setLeftHandSide(fieldAccess);
    newAssignment.setRightHandSide(ast.newSimpleName(builderFieldName));

    newBlock.statements().add(ast.newExpressionStatement(newAssignment));
    newBlock.statements().add(builderReturnStatement);
    return newBlock;
}
 

private Block createWithMethodBody(AST ast, String originalFieldName, String builderFieldName) {
    Block newBlock = ast.newBlock();
    ReturnStatement builderReturnStatement = ast.newReturnStatement();
    builderReturnStatement.setExpression(ast.newThisExpression());

    Assignment newAssignment = ast.newAssignment();

    FieldAccess fieldAccess = ast.newFieldAccess();
    fieldAccess.setExpression(ast.newThisExpression());
    fieldAccess.setName(ast.newSimpleName(originalFieldName));
    newAssignment.setLeftHandSide(fieldAccess);
    newAssignment.setRightHandSide(ast.newSimpleName(builderFieldName));

    newBlock.statements().add(ast.newExpressionStatement(newAssignment));
    newBlock.statements().add(builderReturnStatement);
    return newBlock;
}
 

private Statement prepareAssignment(Expression rightHand) {
	// result = PRIME*result + (...)
	InfixExpression mul= fAst.newInfixExpression();
	mul.setLeftOperand(fAst.newSimpleName(VARIABLE_NAME_PRIME));
	mul.setRightOperand(fAst.newSimpleName(VARIABLE_NAME_RESULT));
	mul.setOperator(Operator.TIMES);

	Assignment ass= fAst.newAssignment();
	ass.setLeftHandSide(fAst.newSimpleName(VARIABLE_NAME_RESULT));

	InfixExpression plus= fAst.newInfixExpression();
	plus.setLeftOperand(mul);
	plus.setOperator(Operator.PLUS);
	plus.setRightOperand(rightHand);

	ass.setRightHandSide(plus);

	return fAst.newExpressionStatement(ass);
}
 

/**
 * Generates the Assignment in an iterator based for, used in the first statement of an iterator
 * based <code>for</code> loop body, to retrieve the next element of the {@link Iterable}
 * instance.
 * 
 * @param rewrite the current instance of {@link ASTRewrite}
 * @param loopOverType the {@link ITypeBinding} of the loop variable
 * @param loopVariableName the name of the loop variable
 * @return an {@link Assignment}, which retrieves the next element of the {@link Iterable} using
 *         the active {@link Iterator}
 */
private Assignment getIteratorBasedForBodyAssignment(ASTRewrite rewrite, ITypeBinding loopOverType, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	MethodInvocation invokeIteratorNextExpression= ast.newMethodInvocation();
	invokeIteratorNextExpression.setName(ast.newSimpleName("next")); //$NON-NLS-1$
	SimpleName currentElementName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(currentElementName), LinkedPositionGroup.NO_STOP, currentElementName.getIdentifier());
	invokeIteratorNextExpression.setExpression(currentElementName);
	assignResolvedVariable.setRightHandSide(invokeIteratorNextExpression);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

public Block createMethodBody(AST ast, List<? extends BuilderField> builderFields) {
    Block body = ast.newBlock();
    for (BuilderField field : builderFields) {

        FieldAccess thisFieldAccess = createThisFieldAccess(ast, field);
        SimpleName parameterName = ast.newSimpleName(field.getBuilderFieldName());

        Assignment assignment = ast.newAssignment();
        assignment.setLeftHandSide(thisFieldAccess);
        assignment.setRightHandSide(parameterName);

        body.statements().add(ast.newExpressionStatement(assignment));
    }
    return body;
}
 

public void populateBodyWithFieldSetCalls(AST ast, String rhsName, Block body, List<? extends BuilderField> builderFields) {
    for (BuilderField field : builderFields) {
        Assignment assignment = ast.newAssignment();

        FieldAccess fieldAccess = createThisFieldAccess(ast, field);
        assignment.setLeftHandSide(fieldAccess);

        FieldAccess builderFieldAccess = builderFieldAccessCreatorFragment.createBuilderFieldAccess(ast, rhsName, field);
        assignment.setRightHandSide(builderFieldAccess);

        body.statements().add(ast.newExpressionStatement(assignment));
    }
}
 

private Statement createNewAssignmentStatement() throws JavaModelException {
	AST ast = fCURewrite.getAST();
	Assignment assignment = ast.newAssignment();
	SimpleName fieldName = ast.newSimpleName(fFieldName);
	ASTRewrite rewrite = fCURewrite.getASTRewrite();
	if (fLinkedProposalModel != null) {
		fLinkedProposalModel.getPositionGroup(KEY_NAME, true).addPosition(rewrite.track(fieldName), true);
	}

	assignment.setLeftHandSide(wrapAsFieldAccessExpression(fieldName));
	assignment.setRightHandSide(getSelectedExpression().createCopyTarget(rewrite, true));
	return ast.newExpressionStatement(assignment);
}
 

/**
 * Creates an {@link Assignment} as first expression appearing in an index based
 * <code>for</code> loop's body. This Assignment declares a local variable and initializes it
 * using the {@link List}'s current element identified by the loop index.
 * 
 * @param rewrite the current {@link ASTRewrite} instance
 * @param loopVariableName the name of the index variable in String representation
 * @return a completed {@link Assignment} containing the mentioned declaration and
 *         initialization
 */
private Expression getIndexBasedForBodyAssignment(ASTRewrite rewrite, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	ITypeBinding loopOverType= extractElementType(ast);

	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	MethodInvocation invokeGetExpression= ast.newMethodInvocation();
	invokeGetExpression.setName(ast.newSimpleName("get")); //$NON-NLS-1$
	SimpleName indexVariableName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(indexVariableName), LinkedPositionGroup.NO_STOP, indexVariableName.getIdentifier());
	invokeGetExpression.arguments().add(indexVariableName);
	invokeGetExpression.setExpression((Expression) rewrite.createCopyTarget(fCurrentExpression));
	assignResolvedVariable.setRightHandSide(invokeGetExpression);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

private void createConstructor(final AbstractTypeDeclaration declaration, final ASTRewrite rewrite) throws CoreException {
	Assert.isNotNull(declaration);
	Assert.isNotNull(rewrite);
	final AST ast= declaration.getAST();
	final MethodDeclaration constructor= ast.newMethodDeclaration();
	constructor.setConstructor(true);
	constructor.setName(ast.newSimpleName(declaration.getName().getIdentifier()));
	final String comment= CodeGeneration.getMethodComment(fType.getCompilationUnit(), fType.getElementName(), fType.getElementName(), getNewConstructorParameterNames(), new String[0], null, null, StubUtility.getLineDelimiterUsed(fType.getJavaProject()));
	if (comment != null && comment.length() > 0) {
		final Javadoc doc= (Javadoc) rewrite.createStringPlaceholder(comment, ASTNode.JAVADOC);
		constructor.setJavadoc(doc);
	}
	if (fCreateInstanceField) {
		final SingleVariableDeclaration variable= ast.newSingleVariableDeclaration();
		final String name= getNameForEnclosingInstanceConstructorParameter();
		variable.setName(ast.newSimpleName(name));
		variable.setType(createEnclosingType(ast));
		constructor.parameters().add(variable);
		final Block body= ast.newBlock();
		final Assignment assignment= ast.newAssignment();
		if (fCodeGenerationSettings.useKeywordThis || fEnclosingInstanceFieldName.equals(fNameForEnclosingInstanceConstructorParameter)) {
			final FieldAccess access= ast.newFieldAccess();
			access.setExpression(ast.newThisExpression());
			access.setName(ast.newSimpleName(fEnclosingInstanceFieldName));
			assignment.setLeftHandSide(access);
		} else
			assignment.setLeftHandSide(ast.newSimpleName(fEnclosingInstanceFieldName));
		assignment.setRightHandSide(ast.newSimpleName(name));
		final Statement statement= ast.newExpressionStatement(assignment);
		body.statements().add(statement);
		constructor.setBody(body);
	} else
		constructor.setBody(ast.newBlock());
	rewrite.getListRewrite(declaration, declaration.getBodyDeclarationsProperty()).insertFirst(constructor, null);
}
 

/**
 * Creates an {@link Assignment} as first expression appearing in a <code>for</code> loop's
 * body. This Assignment declares a local variable and initializes it using the array's current
 * element identified by the loop index.
 * 
 * @param rewrite the current {@link ASTRewrite} instance
 * @param loopVariableName the name of the index variable in String representation
 * @return a completed {@link Assignment} containing the mentioned declaration and
 *         initialization
 */
private Assignment getForBodyAssignment(ASTRewrite rewrite, SimpleName loopVariableName) {
	AST ast= rewrite.getAST();
	ITypeBinding loopOverType= extractElementType(ast);

	Assignment assignResolvedVariable= ast.newAssignment();

	// left hand side
	SimpleName resolvedVariableName= resolveLinkedVariableNameWithProposals(rewrite, loopOverType.getName(), loopVariableName.getIdentifier(), false);
	VariableDeclarationFragment resolvedVariableDeclarationFragment= ast.newVariableDeclarationFragment();
	resolvedVariableDeclarationFragment.setName(resolvedVariableName);
	VariableDeclarationExpression resolvedVariableDeclaration= ast.newVariableDeclarationExpression(resolvedVariableDeclarationFragment);
	resolvedVariableDeclaration.setType(getImportRewrite().addImport(loopOverType, ast, new ContextSensitiveImportRewriteContext(fCurrentNode, getImportRewrite())));
	assignResolvedVariable.setLeftHandSide(resolvedVariableDeclaration);

	// right hand side
	ArrayAccess access= ast.newArrayAccess();
	access.setArray((Expression) rewrite.createCopyTarget(fCurrentExpression));
	SimpleName indexName= ast.newSimpleName(loopVariableName.getIdentifier());
	addLinkedPosition(rewrite.track(indexName), LinkedPositionGroup.NO_STOP, indexName.getIdentifier());
	access.setIndex(indexName);
	assignResolvedVariable.setRightHandSide(access);

	assignResolvedVariable.setOperator(Assignment.Operator.ASSIGN);

	return assignResolvedVariable;
}
 

private Statement createNewAssignmentStatement(ASTRewrite rewrite) {
AST ast= getAST();
Assignment assignment= ast.newAssignment();
SimpleName fieldName= ast.newSimpleName(fFieldName);
addLinkedName(rewrite, fieldName, true);
assignment.setLeftHandSide(fieldName);
assignment.setRightHandSide(getTempInitializerCopy(rewrite));
return ast.newExpressionStatement(assignment);
  }
 

/**
 * Split off initializer in <code>fragment</code> (if any) and add it as a new expression at the end of <code>statements</code>.
 * @param statements The home of the new expression.
 * @param fragment The fragment to split.
 * @param rewrite The rewrite to use.
 */
protected static void splitOffInitializer(List<ASTNode> statements, VariableDeclarationFragment fragment, ASTRewrite rewrite) {
	Expression initializer= fragment.getInitializer();
	if (initializer != null) {
		AST ast= rewrite.getAST();
		Assignment assignment= ast.newAssignment();
		assignment.setLeftHandSide((Expression)rewrite.createCopyTarget(fragment.getName()));
		assignment.setRightHandSide((Expression)rewrite.createMoveTarget(initializer));
		statements.add(ast.newExpressionStatement(assignment));
	}
}
 

private static Statement createAssignmentStatement(ASTRewrite rewrite, Assignment.Operator assignmentOperator, Expression origAssignee, Expression origAssigned) {
	AST ast= rewrite.getAST();
	Assignment elseAssignment= ast.newAssignment();
	elseAssignment.setOperator(assignmentOperator);
	elseAssignment.setLeftHandSide((Expression) rewrite.createCopyTarget(origAssignee));
	elseAssignment.setRightHandSide((Expression) rewrite.createCopyTarget(origAssigned));
	ExpressionStatement statement= ast.newExpressionStatement(elseAssignment);
	return statement;
}
 

private ASTNode[] createCallNodes(SnippetFinder.Match duplicate, int modifiers) {
	List<ASTNode> result = new ArrayList<>(2);

	IVariableBinding[] locals = fAnalyzer.getCallerLocals();
	for (int i = 0; i < locals.length; i++) {
		result.add(createDeclaration(locals[i], null));
	}

	MethodInvocation invocation = fAST.newMethodInvocation();
	invocation.setName(fAST.newSimpleName(fMethodName));
	ASTNode typeNode = ASTResolving.findParentType(fAnalyzer.getEnclosingBodyDeclaration());
	RefactoringStatus status = new RefactoringStatus();
	while (fDestination != typeNode) {
		fAnalyzer.checkInput(status, fMethodName, typeNode);
		if (!status.isOK()) {
			SimpleName destinationTypeName = fAST.newSimpleName(ASTNodes.getEnclosingType(fDestination).getName());
			if ((modifiers & Modifier.STATIC) == 0) {
				ThisExpression thisExpression = fAST.newThisExpression();
				thisExpression.setQualifier(destinationTypeName);
				invocation.setExpression(thisExpression);
			} else {
				invocation.setExpression(destinationTypeName);
			}
			break;
		}
		typeNode = typeNode.getParent();
	}

	List<Expression> arguments = invocation.arguments();
	for (int i = 0; i < fParameterInfos.size(); i++) {
		ParameterInfo parameter = fParameterInfos.get(i);
		arguments.add(ASTNodeFactory.newName(fAST, getMappedName(duplicate, parameter)));
	}
	if (fLinkedProposalModel != null) {
		LinkedProposalPositionGroupCore nameGroup = fLinkedProposalModel.getPositionGroup(KEY_NAME, true);
		nameGroup.addPosition(fRewriter.track(invocation.getName()), true);
	}

	ASTNode call;
	int returnKind = fAnalyzer.getReturnKind();
	switch (returnKind) {
		case ExtractMethodAnalyzer.ACCESS_TO_LOCAL:
			IVariableBinding binding = fAnalyzer.getReturnLocal();
			if (binding != null) {
				VariableDeclarationStatement decl = createDeclaration(getMappedBinding(duplicate, binding), invocation);
				call = decl;
			} else {
				Assignment assignment = fAST.newAssignment();
				assignment.setLeftHandSide(ASTNodeFactory.newName(fAST, getMappedBinding(duplicate, fAnalyzer.getReturnValue()).getName()));
				assignment.setRightHandSide(invocation);
				call = assignment;
			}
			break;
		case ExtractMethodAnalyzer.RETURN_STATEMENT_VALUE:
			ReturnStatement rs = fAST.newReturnStatement();
			rs.setExpression(invocation);
			call = rs;
			break;
		default:
			call = invocation;
	}

	if (call instanceof Expression && !fAnalyzer.isExpressionSelected()) {
		call = fAST.newExpressionStatement((Expression) call);
	}
	result.add(call);

	// We have a void return statement. The code looks like
	// extracted();
	// return;
	if (returnKind == ExtractMethodAnalyzer.RETURN_STATEMENT_VOID && !fAnalyzer.isLastStatementSelected()) {
		result.add(fAST.newReturnStatement());
	}
	return result.toArray(new ASTNode[result.size()]);
}
 

private ASTRewrite doAddField(ASTRewrite rewrite, ASTNode nodeToAssign, ITypeBinding typeBinding, int index) {
	boolean isParamToField= nodeToAssign.getNodeType() == ASTNode.SINGLE_VARIABLE_DECLARATION;

	ASTNode newTypeDecl= ASTResolving.findParentType(nodeToAssign);
	if (newTypeDecl == null) {
		return null;
	}

	Expression expression= isParamToField ? ((SingleVariableDeclaration) nodeToAssign).getName() : ((ExpressionStatement) nodeToAssign).getExpression();

	AST ast= newTypeDecl.getAST();

	createImportRewrite((CompilationUnit) nodeToAssign.getRoot());

	BodyDeclaration bodyDecl= ASTResolving.findParentBodyDeclaration(nodeToAssign);
	Block body;
	if (bodyDecl instanceof MethodDeclaration) {
		body= ((MethodDeclaration) bodyDecl).getBody();
	} else if (bodyDecl instanceof Initializer) {
		body= ((Initializer) bodyDecl).getBody();
	} else {
		return null;
	}

	IJavaProject project= getCompilationUnit().getJavaProject();
	boolean isAnonymous= newTypeDecl.getNodeType() == ASTNode.ANONYMOUS_CLASS_DECLARATION;
	boolean isStatic= Modifier.isStatic(bodyDecl.getModifiers()) && !isAnonymous;
	int modifiers= Modifier.PRIVATE;
	if (isStatic) {
		modifiers |= Modifier.STATIC;
	}

	VariableDeclarationFragment newDeclFrag= addFieldDeclaration(rewrite, newTypeDecl, modifiers, expression, nodeToAssign, typeBinding, index);
	String varName= newDeclFrag.getName().getIdentifier();

	Assignment assignment= ast.newAssignment();
	assignment.setRightHandSide((Expression) rewrite.createCopyTarget(expression));

	boolean needsThis= StubUtility.useThisForFieldAccess(project);
	if (isParamToField) {
		needsThis |= varName.equals(((SimpleName) expression).getIdentifier());
	}

	SimpleName accessName= ast.newSimpleName(varName);
	if (needsThis) {
		FieldAccess fieldAccess= ast.newFieldAccess();
		fieldAccess.setName(accessName);
		if (isStatic) {
			String typeName= ((AbstractTypeDeclaration) newTypeDecl).getName().getIdentifier();
			fieldAccess.setExpression(ast.newSimpleName(typeName));
		} else {
			fieldAccess.setExpression(ast.newThisExpression());
		}
		assignment.setLeftHandSide(fieldAccess);
	} else {
		assignment.setLeftHandSide(accessName);
	}

	ASTNode selectionNode;
	if (isParamToField) {
		// assign parameter to field
		ExpressionStatement statement= ast.newExpressionStatement(assignment);
		int insertIdx= findAssignmentInsertIndex(body.statements(), nodeToAssign) + index;
		rewrite.getListRewrite(body, Block.STATEMENTS_PROPERTY).insertAt(statement, insertIdx, null);
		selectionNode= statement;
	} else {
		if (needsSemicolon(expression)) {
			rewrite.replace(expression, ast.newExpressionStatement(assignment), null);
		} else {
			rewrite.replace(expression, assignment, null);
		}
		selectionNode= nodeToAssign;
	}

	addLinkedPosition(rewrite.track(newDeclFrag.getName()), false, KEY_NAME + index);
	if (!isParamToField) {
		FieldDeclaration fieldDeclaration= (FieldDeclaration) newDeclFrag.getParent();
		addLinkedPosition(rewrite.track(fieldDeclaration.getType()), false, KEY_TYPE);
	}
	addLinkedPosition(rewrite.track(accessName), true, KEY_NAME + index);
	IVariableBinding variableBinding= newDeclFrag.resolveBinding();
	if (variableBinding != null) {
		SimpleName[] linkedNodes= LinkedNodeFinder.findByBinding(nodeToAssign.getRoot(), variableBinding);
		for (int i= 0; i < linkedNodes.length; i++) {
			addLinkedPosition(rewrite.track(linkedNodes[i]), false, KEY_NAME + index);
		}
	}
	setEndPosition(rewrite.track(selectionNode));

	return rewrite;
}
 

@Override
public boolean visit(final PostfixExpression node) {
  final AST dummyAST = AST.newAST(node.getAST().apiLevel());
  final PostfixExpression.Operator pfOperator = node.getOperator();
  Expression _operand = node.getOperand();
  if ((_operand instanceof ArrayAccess)) {
    Expression _operand_1 = node.getOperand();
    final ArrayAccess pfOperand = ((ArrayAccess) _operand_1);
    if ((Objects.equal(pfOperator, PostfixExpression.Operator.INCREMENT) || 
      Objects.equal(pfOperator, PostfixExpression.Operator.DECREMENT))) {
      final String arrayName = this.computeArrayName(pfOperand);
      StringConcatenation _builder = new StringConcatenation();
      _builder.append("_postIndx_");
      _builder.append(arrayName);
      final String idxName = _builder.toString();
      StringConcatenation _builder_1 = new StringConcatenation();
      _builder_1.append("_postVal_");
      _builder_1.append(arrayName);
      final String tempVarName = _builder_1.toString();
      StringConcatenation _builder_2 = new StringConcatenation();
      _builder_2.append("{ var ");
      _builder_2.append(idxName);
      _builder_2.append("=");
      this.appendToBuffer(_builder_2.toString());
      pfOperand.getIndex().accept(this);
      StringConcatenation _builder_3 = new StringConcatenation();
      _builder_3.append(" ");
      _builder_3.append("var  ");
      this.appendToBuffer(_builder_3.toString());
      final VariableDeclarationFragment varDeclaration = dummyAST.newVariableDeclarationFragment();
      varDeclaration.setName(dummyAST.newSimpleName(tempVarName));
      ASTNode _copySubtree = ASTNode.copySubtree(dummyAST, pfOperand);
      final ArrayAccess arrayAccess = ((ArrayAccess) _copySubtree);
      arrayAccess.setIndex(dummyAST.newSimpleName(idxName));
      varDeclaration.setInitializer(arrayAccess);
      varDeclaration.accept(this);
      final InfixExpression infixOp = dummyAST.newInfixExpression();
      infixOp.setLeftOperand(dummyAST.newSimpleName(tempVarName));
      PostfixExpression.Operator _operator = node.getOperator();
      boolean _equals = Objects.equal(_operator, PostfixExpression.Operator.DECREMENT);
      if (_equals) {
        infixOp.setOperator(InfixExpression.Operator.MINUS);
      } else {
        infixOp.setOperator(InfixExpression.Operator.PLUS);
      }
      infixOp.setRightOperand(dummyAST.newNumberLiteral("1"));
      final Assignment assigment = dummyAST.newAssignment();
      ASTNode _copySubtree_1 = ASTNode.copySubtree(dummyAST, pfOperand);
      final ArrayAccess writeArray = ((ArrayAccess) _copySubtree_1);
      writeArray.setIndex(dummyAST.newSimpleName(idxName));
      assigment.setLeftHandSide(writeArray);
      ASTNode _copySubtree_2 = ASTNode.copySubtree(dummyAST, infixOp);
      assigment.setRightHandSide(((Expression) _copySubtree_2));
      assigment.accept(this);
      StringConcatenation _builder_4 = new StringConcatenation();
      String _xifexpression = null;
      boolean _needsReturnValue = this._aSTFlattenerUtils.needsReturnValue(node);
      if (_needsReturnValue) {
        _xifexpression = tempVarName;
      }
      _builder_4.append(_xifexpression);
      _builder_4.append(" }");
      this.appendToBuffer(_builder_4.toString());
      return false;
    }
  }
  node.getOperand().accept(this);
  this.appendToBuffer(pfOperator.toString());
  return false;
}
 

@Override
public boolean visit(final PrefixExpression node) {
  final Expression operand = node.getOperand();
  PrefixExpression.Operator _operator = node.getOperator();
  boolean _matched = false;
  if (Objects.equal(_operator, PrefixExpression.Operator.DECREMENT)) {
    _matched=true;
  }
  if (!_matched) {
    if (Objects.equal(_operator, PrefixExpression.Operator.INCREMENT)) {
      _matched=true;
    }
  }
  if (_matched) {
    if ((operand instanceof ArrayAccess)) {
      final String arrayName = this.computeArrayName(((ArrayAccess)operand));
      StringConcatenation _builder = new StringConcatenation();
      _builder.append("_tPreInx_");
      _builder.append(arrayName);
      final String idxName = _builder.toString();
      String op = "-";
      PrefixExpression.Operator _operator_1 = node.getOperator();
      boolean _equals = Objects.equal(_operator_1, PrefixExpression.Operator.INCREMENT);
      if (_equals) {
        op = "+";
      }
      StringConcatenation _builder_1 = new StringConcatenation();
      _builder_1.append("{val ");
      _builder_1.append(idxName);
      _builder_1.append("=");
      this.appendToBuffer(_builder_1.toString());
      ((ArrayAccess)operand).getIndex().accept(this);
      StringConcatenation _builder_2 = new StringConcatenation();
      _builder_2.append(" ");
      _builder_2.append("val ");
      _builder_2.append(idxName, " ");
      _builder_2.append("_res=");
      _builder_2.append(arrayName, " ");
      _builder_2.append(".get(");
      _builder_2.append(idxName, " ");
      _builder_2.append(")");
      _builder_2.append(op, " ");
      _builder_2.append("1");
      this.appendToBuffer(_builder_2.toString());
      StringConcatenation _builder_3 = new StringConcatenation();
      _builder_3.append(" ");
      _builder_3.append(arrayName, " ");
      _builder_3.append(".set(");
      _builder_3.append(idxName, " ");
      _builder_3.append(", ");
      _builder_3.append(idxName, " ");
      _builder_3.append("_res)  ");
      _builder_3.append(idxName, " ");
      _builder_3.append("_res}");
      this.appendToBuffer(_builder_3.toString());
      return false;
    } else {
      final AST dummyAST = AST.newAST(node.getAST().apiLevel());
      final Assignment assigment = dummyAST.newAssignment();
      final InfixExpression infixOp = dummyAST.newInfixExpression();
      ASTNode _copySubtree = ASTNode.copySubtree(dummyAST, operand);
      infixOp.setLeftOperand(((Expression) _copySubtree));
      PrefixExpression.Operator _operator_2 = node.getOperator();
      boolean _equals_1 = Objects.equal(_operator_2, PrefixExpression.Operator.DECREMENT);
      if (_equals_1) {
        infixOp.setOperator(InfixExpression.Operator.MINUS);
      } else {
        infixOp.setOperator(InfixExpression.Operator.PLUS);
      }
      infixOp.setRightOperand(dummyAST.newNumberLiteral("1"));
      ASTNode _copySubtree_1 = ASTNode.copySubtree(dummyAST, operand);
      final Expression leftSide = ((Expression) _copySubtree_1);
      assigment.setLeftHandSide(leftSide);
      assigment.setRightHandSide(infixOp);
      this.appendToBuffer("{");
      Type type = null;
      if ((operand instanceof SimpleName)) {
        type = this._aSTFlattenerUtils.findDeclaredType(((SimpleName)operand));
      }
      this.handleAssignment(assigment, leftSide, type);
      this.appendToBuffer("}");
      return false;
    }
  }
  if (!_matched) {
    if (Objects.equal(_operator, PrefixExpression.Operator.COMPLEMENT)) {
      _matched=true;
      node.getOperand().accept(this);
      this.appendToBuffer(".bitwiseNot");
    }
  }
  if (!_matched) {
    {
      this.appendToBuffer(node.getOperator().toString());
      node.getOperand().accept(this);
    }
  }
  return false;
}
 

private ASTNode[] createCallNodes(SnippetFinder.Match duplicate, int modifiers) {
	List<ASTNode> result= new ArrayList<ASTNode>(2);

	IVariableBinding[] locals= fAnalyzer.getCallerLocals();
	for (int i= 0; i < locals.length; i++) {
		result.add(createDeclaration(locals[i], null));
	}

	MethodInvocation invocation= fAST.newMethodInvocation();
	invocation.setName(fAST.newSimpleName(fMethodName));
	ASTNode typeNode= ASTResolving.findParentType(fAnalyzer.getEnclosingBodyDeclaration());
	RefactoringStatus status= new RefactoringStatus();
	while (fDestination != typeNode) {
		fAnalyzer.checkInput(status, fMethodName, typeNode);
		if (!status.isOK()) {
			SimpleName destinationTypeName= fAST.newSimpleName(ASTNodes.getEnclosingType(fDestination).getName());
			if ((modifiers & Modifier.STATIC) == 0) {
				ThisExpression thisExpression= fAST.newThisExpression();
				thisExpression.setQualifier(destinationTypeName);
				invocation.setExpression(thisExpression);
			} else {
				invocation.setExpression(destinationTypeName);
			}
			break;
		}
		typeNode= typeNode.getParent();
	}

	List<Expression> arguments= invocation.arguments();
	for (int i= 0; i < fParameterInfos.size(); i++) {
		ParameterInfo parameter= fParameterInfos.get(i);
		arguments.add(ASTNodeFactory.newName(fAST, getMappedName(duplicate, parameter)));
	}
	if (fLinkedProposalModel != null) {
		LinkedProposalPositionGroup nameGroup= fLinkedProposalModel.getPositionGroup(KEY_NAME, true);
		nameGroup.addPosition(fRewriter.track(invocation.getName()), false);
	}

	ASTNode call;
	int returnKind= fAnalyzer.getReturnKind();
	switch (returnKind) {
		case ExtractMethodAnalyzer.ACCESS_TO_LOCAL:
			IVariableBinding binding= fAnalyzer.getReturnLocal();
			if (binding != null) {
				VariableDeclarationStatement decl= createDeclaration(getMappedBinding(duplicate, binding), invocation);
				call= decl;
			} else {
				Assignment assignment= fAST.newAssignment();
				assignment.setLeftHandSide(ASTNodeFactory.newName(fAST,
						getMappedBinding(duplicate, fAnalyzer.getReturnValue()).getName()));
				assignment.setRightHandSide(invocation);
				call= assignment;
			}
			break;
		case ExtractMethodAnalyzer.RETURN_STATEMENT_VALUE:
			ReturnStatement rs= fAST.newReturnStatement();
			rs.setExpression(invocation);
			call= rs;
			break;
		default:
			call= invocation;
	}

	if (call instanceof Expression && !fAnalyzer.isExpressionSelected()) {
		call= fAST.newExpressionStatement((Expression)call);
	}
	result.add(call);

	// We have a void return statement. The code looks like
	// extracted();
	// return;
	if (returnKind == ExtractMethodAnalyzer.RETURN_STATEMENT_VOID && !fAnalyzer.isLastStatementSelected()) {
		result.add(fAST.newReturnStatement());
	}
	return result.toArray(new ASTNode[result.size()]);
}
 

private MethodDeclaration createSetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
	FieldDeclaration field= (FieldDeclaration)ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
	Type type= field.getType();
	MethodDeclaration result= ast.newMethodDeclaration();
	result.setName(ast.newSimpleName(fSetterName));
	result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
	if (fSetterMustReturnValue) {
		result.setReturnType2((Type)rewriter.createCopyTarget(type));
	}
	SingleVariableDeclaration param= ast.newSingleVariableDeclaration();
	result.parameters().add(param);
	param.setName(ast.newSimpleName(fArgName));
	param.setType((Type)rewriter.createCopyTarget(type));
	List<Dimension> extraDimensions= DimensionRewrite.copyDimensions(fFieldDeclaration.extraDimensions(), rewriter);
	param.extraDimensions().addAll(extraDimensions);

	Block block= ast.newBlock();
	result.setBody(block);

	String fieldAccess= createFieldAccess();
	String body= CodeGeneration.getSetterMethodBodyContent(fField.getCompilationUnit(), getTypeName(field.getParent()), fSetterName, fieldAccess, fArgName, lineDelimiter);
	if (body != null) {
		ASTNode setterNode= rewriter.createStringPlaceholder(body, ASTNode.BLOCK);
		block.statements().add(setterNode);
	} else {
		Assignment ass= ast.newAssignment();
		ass.setLeftHandSide((Expression) rewriter.createStringPlaceholder(fieldAccess, ASTNode.QUALIFIED_NAME));
		ass.setRightHandSide(ast.newSimpleName(fArgName));
		block.statements().add(ass);
	}
       if (fSetterMustReturnValue) {
       	ReturnStatement rs= ast.newReturnStatement();
       	rs.setExpression(ast.newSimpleName(fArgName));
       	block.statements().add(rs);
       }
       if (fGenerateJavadoc) {
		String string= CodeGeneration.getSetterComment(
			fField.getCompilationUnit() , getTypeName(field.getParent()), fSetterName,
			fField.getElementName(), ASTNodes.asString(type), fArgName,
			StubUtility.getBaseName(fField),
			lineDelimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc)fRewriter.createStringPlaceholder(string, ASTNode.JAVADOC);
			result.setJavadoc(javadoc);
		}
	}
	return result;
}
 

public static MethodDeclaration createConstructorStub(ICompilationUnit unit, ASTRewrite rewrite, ImportRewrite imports, ImportRewriteContext context, ITypeBinding typeBinding, IMethodBinding superConstructor, IVariableBinding[] variableBindings, int modifiers, CodeGenerationSettings settings) throws CoreException {
	AST ast= rewrite.getAST();

	MethodDeclaration decl= ast.newMethodDeclaration();
	decl.modifiers().addAll(ASTNodeFactory.newModifiers(ast, modifiers & ~Modifier.ABSTRACT & ~Modifier.NATIVE));
	decl.setName(ast.newSimpleName(typeBinding.getName()));
	decl.setConstructor(true);

	List<SingleVariableDeclaration> parameters= decl.parameters();
	if (superConstructor != null) {
		createTypeParameters(imports, context, ast, superConstructor, decl);

		createParameters(unit.getJavaProject(), imports, context, ast, superConstructor, null, decl);

		createThrownExceptions(decl, superConstructor, imports, context, ast);
	}

	Block body= ast.newBlock();
	decl.setBody(body);

	String delimiter= StubUtility.getLineDelimiterUsed(unit);

	if (superConstructor != null) {
		SuperConstructorInvocation invocation= ast.newSuperConstructorInvocation();
		SingleVariableDeclaration varDecl= null;
		for (Iterator<SingleVariableDeclaration> iterator= parameters.iterator(); iterator.hasNext();) {
			varDecl= iterator.next();
			invocation.arguments().add(ast.newSimpleName(varDecl.getName().getIdentifier()));
		}
		body.statements().add(invocation);
	}

	List<String> prohibited= new ArrayList<String>();
	for (final Iterator<SingleVariableDeclaration> iterator= parameters.iterator(); iterator.hasNext();)
		prohibited.add(iterator.next().getName().getIdentifier());
	String param= null;
	List<String> list= new ArrayList<String>(prohibited);
	String[] excluded= null;
	for (int i= 0; i < variableBindings.length; i++) {
		SingleVariableDeclaration var= ast.newSingleVariableDeclaration();
		var.setType(imports.addImport(variableBindings[i].getType(), ast, context));
		excluded= new String[list.size()];
		list.toArray(excluded);
		param= suggestParameterName(unit, variableBindings[i], excluded);
		list.add(param);
		var.setName(ast.newSimpleName(param));
		parameters.add(var);
	}

	list= new ArrayList<String>(prohibited);
	for (int i= 0; i < variableBindings.length; i++) {
		excluded= new String[list.size()];
		list.toArray(excluded);
		final String paramName= suggestParameterName(unit, variableBindings[i], excluded);
		list.add(paramName);
		final String fieldName= variableBindings[i].getName();
		Expression expression= null;
		if (paramName.equals(fieldName) || settings.useKeywordThis) {
			FieldAccess access= ast.newFieldAccess();
			access.setExpression(ast.newThisExpression());
			access.setName(ast.newSimpleName(fieldName));
			expression= access;
		} else
			expression= ast.newSimpleName(fieldName);
		Assignment assignment= ast.newAssignment();
		assignment.setLeftHandSide(expression);
		assignment.setRightHandSide(ast.newSimpleName(paramName));
		assignment.setOperator(Assignment.Operator.ASSIGN);
		body.statements().add(ast.newExpressionStatement(assignment));
	}

	if (settings != null && settings.createComments) {
		String string= CodeGeneration.getMethodComment(unit, typeBinding.getName(), decl, superConstructor, delimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc) rewrite.createStringPlaceholder(string, ASTNode.JAVADOC);
			decl.setJavadoc(javadoc);
		}
	}
	return decl;
}