Java TryStatement类代码示例

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
/**
 * Method that check statement type.
 * @author Mariana Azevedo
 * @since 13/07/2014
 * @param itStatement
 */
private void getStatementType(Object itStatement) {
	if (itStatement instanceof CatchClause){
		this.visitor.visit((CatchClause)itStatement);
	}else if (itStatement instanceof ForStatement){
		this.visitor.visit((ForStatement)itStatement);
	}else if (itStatement instanceof IfStatement){
		this.visitor.visit((IfStatement)itStatement);
	}else if (itStatement instanceof WhileStatement){
		this.visitor.visit((WhileStatement)itStatement);
	}else if (itStatement instanceof TryStatement){
		this.visitor.visit((TryStatement)itStatement);
	}else if (itStatement instanceof ConditionalExpression){
		this.visitor.visit((ConditionalExpression)itStatement);
	}else if (itStatement instanceof SwitchCase){
		this.visitor.visit((SwitchCase)itStatement);
	}else if (itStatement instanceof DoStatement){
		this.visitor.visit((DoStatement)itStatement);
	}else if (itStatement instanceof ExpressionStatement){
		this.visitor.visit((ExpressionStatement)itStatement);
	}
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public boolean visit(TryStatement node) {
	if (traverseNode(node)) {
		fFlowContext.pushExcptions(node);
		for (Iterator<VariableDeclarationExpression> iterator = node.resources().iterator(); iterator.hasNext();) {
			iterator.next().accept(this);
		}
		node.getBody().accept(this);
		fFlowContext.popExceptions();
		List<CatchClause> catchClauses = node.catchClauses();
		for (Iterator<CatchClause> iter = catchClauses.iterator(); iter.hasNext();) {
			iter.next().accept(this);
		}
		Block finallyBlock = node.getFinally();
		if (finallyBlock != null) {
			finallyBlock.accept(this);
		}
	}
	return false;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public void endVisit(TryStatement node) {
	if (skipNode(node)) {
		return;
	}
	TryFlowInfo info = createTry();
	setFlowInfo(node, info);
	for (Iterator<VariableDeclarationExpression> iterator = node.resources().iterator(); iterator.hasNext();) {
		info.mergeResources(getFlowInfo(iterator.next()), fFlowContext);
	}
	info.mergeTry(getFlowInfo(node.getBody()), fFlowContext);
	for (Iterator<CatchClause> iter = node.catchClauses().iterator(); iter.hasNext();) {
		CatchClause element = iter.next();
		info.mergeCatch(getFlowInfo(element), fFlowContext);
	}
	info.mergeFinally(getFlowInfo(node.getFinally()), fFlowContext);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public void endVisit(TryStatement node) {
	ASTNode firstSelectedNode = getFirstSelectedNode();
	if (getSelection().getEndVisitSelectionMode(node) == Selection.AFTER) {
		if (firstSelectedNode == node.getBody() || firstSelectedNode == node.getFinally()) {
			invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
		} else {
			List<CatchClause> catchClauses = node.catchClauses();
			for (Iterator<CatchClause> iterator = catchClauses.iterator(); iterator.hasNext();) {
				CatchClause element = iterator.next();
				if (element == firstSelectedNode || element.getBody() == firstSelectedNode) {
					invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
				} else if (element.getException() == firstSelectedNode) {
					invalidSelection(RefactoringCoreMessages.StatementAnalyzer_catch_argument);
				}
			}
		}
	}
	super.endVisit(node);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public boolean visit(VariableDeclarationExpression node) {
  if (node.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
    Type type = node.getType();
    ITypeBinding resourceTypeBinding = type.resolveBinding();
    if (resourceTypeBinding != null) {
      IMethodBinding methodBinding =
          Bindings.findMethodInHierarchy(
              resourceTypeBinding, "close", new ITypeBinding[0]); // $NON-NLS-1$
      if (methodBinding != null) {
        addExceptions(methodBinding.getExceptionTypes(), node.getAST());
      }
    }
  }
  return super.visit(node);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public void endVisit(TryStatement node) {
  ASTNode firstSelectedNode = getFirstSelectedNode();
  if (getSelection().getEndVisitSelectionMode(node) == Selection.AFTER) {
    if (firstSelectedNode == node.getBody() || firstSelectedNode == node.getFinally()) {
      invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
    } else {
      List<CatchClause> catchClauses = node.catchClauses();
      for (Iterator<CatchClause> iterator = catchClauses.iterator(); iterator.hasNext(); ) {
        CatchClause element = iterator.next();
        if (element == firstSelectedNode || element.getBody() == firstSelectedNode) {
          invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
        } else if (element.getException() == firstSelectedNode) {
          invalidSelection(RefactoringCoreMessages.StatementAnalyzer_catch_argument);
        }
      }
    }
  }
  super.endVisit(node);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
private RefactoringStatus checkSelection(VariableDeclaration decl) {
	ASTNode parent= decl.getParent();
	if (parent instanceof MethodDeclaration) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_method_parameter);
	}

	if (parent instanceof CatchClause) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_exceptions_declared);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == ForStatement.INITIALIZERS_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_for_initializers);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_resource_in_try_with_resources);
	}

	if (decl.getInitializer() == null) {
		String message= Messages.format(RefactoringCoreMessages.InlineTempRefactoring_not_initialized, BasicElementLabels.getJavaElementName(decl.getName().getIdentifier()));
		return RefactoringStatus.createFatalErrorStatus(message);
	}

	return checkAssignments(decl);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public boolean visit(TryStatement node) {
	if (traverseNode(node)) {
		fFlowContext.pushExcptions(node);
		node.getBody().accept(this);
		fFlowContext.popExceptions();
		List<CatchClause> catchClauses= node.catchClauses();
		for (Iterator<CatchClause> iter= catchClauses.iterator(); iter.hasNext();) {
			iter.next().accept(this);
		}
		Block finallyBlock= node.getFinally();
		if (finallyBlock != null) {
			finallyBlock.accept(this);
		}
	}
	return false;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
private RefactoringStatus checkExpression() throws JavaModelException {
	Expression selectedExpression= getSelectedExpression().getAssociatedExpression();
	if (selectedExpression != null) {
		final ASTNode parent= selectedExpression.getParent();
		if (selectedExpression instanceof NullLiteral) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_null_literals);
		} else if (selectedExpression instanceof ArrayInitializer) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_array_initializer);
		} else if (selectedExpression instanceof Assignment) {
			if (parent instanceof Expression && !(parent instanceof ParenthesizedExpression))
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_assignment);
			else
				return null;
		} else if (selectedExpression instanceof SimpleName) {
			if ((((SimpleName) selectedExpression)).isDeclaration())
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_names_in_declarations);
			if (parent instanceof QualifiedName && selectedExpression.getLocationInParent() == QualifiedName.NAME_PROPERTY || parent instanceof FieldAccess && selectedExpression.getLocationInParent() == FieldAccess.NAME_PROPERTY)
				return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_select_expression);
		} else if (selectedExpression instanceof VariableDeclarationExpression && parent instanceof TryStatement) {
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_resource_in_try_with_resources);
		}
	}

	return null;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@Override
public void endVisit(TryStatement node) {
	ASTNode firstSelectedNode= getFirstSelectedNode();
	if (getSelection().getEndVisitSelectionMode(node) == Selection.AFTER) {
		if (firstSelectedNode == node.getBody() || firstSelectedNode == node.getFinally()) {
			invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
		} else {
			List<CatchClause> catchClauses= node.catchClauses();
			for (Iterator<CatchClause> iterator= catchClauses.iterator(); iterator.hasNext();) {
				CatchClause element= iterator.next();
				if (element == firstSelectedNode || element.getBody() == firstSelectedNode) {
					invalidSelection(RefactoringCoreMessages.StatementAnalyzer_try_statement);
				} else if (element.getException() == firstSelectedNode) {
					invalidSelection(RefactoringCoreMessages.StatementAnalyzer_catch_argument);
				}
			}
		}
	}
	super.endVisit(node);
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
private static boolean getAddFinallyProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
	TryStatement tryStatement= ASTResolving.findParentTryStatement(node);
	if (tryStatement == null || tryStatement.getFinally() != null) {
		return false;
	}
	Statement statement= ASTResolving.findParentStatement(node);
	if (tryStatement != statement && tryStatement.getBody() != statement) {
		return false; // an node inside a catch or finally block
	}

	if (resultingCollections == null) {
		return true;
	}

	AST ast= tryStatement.getAST();
	ASTRewrite rewrite= ASTRewrite.create(ast);
	Block finallyBody= ast.newBlock();

	rewrite.set(tryStatement, TryStatement.FINALLY_PROPERTY, finallyBody, null);

	String label= CorrectionMessages.QuickAssistProcessor_addfinallyblock_description;
	Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_ADD);
	ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.ADD_FINALLY_BLOCK, image);
	resultingCollections.add(proposal);
	return true;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
private static boolean getAddFinallyProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
	TryStatement tryStatement= ASTResolving.findParentTryStatement(node);
	if (tryStatement == null || tryStatement.getFinally() != null) {
		return false;
	}
	Statement statement= ASTResolving.findParentStatement(node);
	if (tryStatement != statement && tryStatement.getBody() != statement) {
		return false; // an node inside a catch or finally block
	}

	if (resultingCollections == null) {
		return true;
	}

	AST ast= tryStatement.getAST();
	ASTRewrite rewrite= ASTRewrite.create(ast);
	Block finallyBody= ast.newBlock();

	rewrite.set(tryStatement, TryStatement.FINALLY_PROPERTY, finallyBody, null);

	String label= CorrectionMessages.QuickAssistProcessor_addfinallyblock_description;
	Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_ADD);
	ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 1, image);
	resultingCollections.add(proposal);
	return true;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
@SuppressWarnings("unchecked")
private static TryStatement findLastTryStatementUsingVariable(SimpleName variable) {
    // looks for the last try statement that has a reference to the variable referred to
    // by the included simpleName.
    // If we can't find such a try block, we give up trying to fix
    Block parentBlock = TraversalUtil.findClosestAncestor(variable, Block.class);
    List<Statement> statements = parentBlock.statements();
    for (int i = statements.size() - 1; i >= 0; i--) {
        Statement s = statements.get(i);
        if (s instanceof TryStatement) {
            TryStatement tryStatement = (TryStatement) s;
            if (tryRefersToVariable(tryStatement, variable)) {
                return tryStatement;
            }
        }
    }
    return null;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
public static Object wrap(Object statement, int indentation, Applicable applicable) {
    if (statement instanceof IfStatement) {
        return new IfStatementWrapper((IfStatement) statement, indentation, applicable);
    } else if (statement instanceof TryStatement) {
        return new TryStatementWrapper((TryStatement) statement, indentation, applicable);
    }
    return statement;
}
 

import org.eclipse.jdt.core.dom.TryStatement; //导入依赖的package包/类
TryStatementWrapper(TryStatement statement, int indentationLevel, Applicable applicable) {
    super(indentationLevel, applicable);
    body.addAll(statement.resources());
    ofNullable(statement.getBody()).ifPresent(block -> body.addAll(block.statements()));
    this.catchClauses = (LinkedList<CatchClauseWrapper>) statement.catchClauses().stream()
            .map(catchClause -> new CatchClauseWrapper((CatchClause) catchClause, indentationLevel, applicable))
            .collect(toCollection(LinkedList::new));
    finallyBody = ofNullable(statement.getFinally())
            .map(Block::statements);

    applicable.applyFeaturesToStatements(body);
    finallyBody.ifPresent(applicable::applyFeaturesToStatements);
}