| /******************************************************************************* |
| * Copyright (c) 2009 xored software, Inc. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * xored software, Inc. - initial API and Implementation (Vladimir Belov) |
| *******************************************************************************/ |
| |
| package org.eclipse.dltk.javascript.formatter.internal.nodes; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.dltk.formatter.IFormatterContext; |
| import org.eclipse.dltk.formatter.IFormatterDocument; |
| import org.eclipse.dltk.formatter.IFormatterNode; |
| import org.eclipse.dltk.formatter.IFormatterTextNode; |
| import org.eclipse.dltk.formatter.IFormatterWriter; |
| import org.eclipse.dltk.javascript.formatter.JavaScriptFormatterConstants; |
| |
| public class BracesNode extends FormatterBlockWithBeginEndNode { |
| |
| private IBracesConfiguration configuration; |
| |
| public BracesNode(IFormatterDocument document, |
| IBracesConfiguration configuration) { |
| super(document); |
| |
| Assert.isNotNull(configuration); |
| |
| this.configuration = configuration; |
| } |
| |
| @Override |
| public void accept(IFormatterContext context, IFormatterWriter visitor) |
| throws Exception { |
| |
| context.setBlankLines(getBlankLinesBefore(context)); |
| |
| printBeforeOpenBrace(context, visitor); |
| |
| if (configuration.isBracesIndenting()) |
| context.incIndent(); |
| |
| // print "{" |
| if (getBegin() != null) { |
| IFormatterNode[] nodes = getBegin(); |
| for (int i = 0; i < nodes.length; i++) { |
| nodes[i].accept(context, visitor); |
| } |
| } |
| // special support for comments on the same line as the start brace |
| // if a formatter node is found before any other node (or textnodes that don't contain new lines) |
| // skip the printAfterOpenBrace but just put an empty space. |
| boolean printAfterOpenBrace = true; |
| List<IFormatterNode> children = getChildren(); |
| for (IFormatterNode formatterNode : children) { |
| if (formatterNode instanceof FormatterCommentNode) { |
| printAfterOpenBrace = false; |
| } |
| else if (formatterNode instanceof IFormatterTextNode) { |
| if (((IFormatterTextNode) formatterNode).getText().indexOf('\n') == -1) { |
| continue; |
| } |
| } |
| break; |
| } |
| |
| if (printAfterOpenBrace) printAfterOpenBrace(context, visitor); |
| else visitor.writeText(context, JSLiterals.SPACE); |
| |
| // print body |
| final boolean indenting = isIndenting(); |
| if (indenting) { |
| context.incIndent(); |
| } |
| acceptBody(context, visitor); |
| if (indenting) { |
| context.decIndent(); |
| } |
| |
| printBeforeCloseBrace(context, visitor); |
| |
| // print "}" |
| if (getEnd() != null) { |
| visitor.write(context, getEnd().getStartOffset(), getEnd() |
| .getEndOffset()); |
| } |
| |
| printAfterCloseBrace(context, visitor); |
| |
| if (configuration.isBracesIndenting()) |
| context.decIndent(); |
| |
| } |
| |
| private boolean isStatementNewLine() { |
| return getDocument().getBoolean( |
| JavaScriptFormatterConstants.STATEMENT_NEW_LINE); |
| } |
| |
| private void printBeforeCloseBrace(IFormatterContext context, |
| IFormatterWriter visitor) throws Exception { |
| |
| switch (configuration.insertBeforeCloseBrace()) { |
| case IBracesConfiguration.LINE_BREAK: |
| if (isStatementNewLine()) { |
| context.setBlankLines(-1); |
| visitor.writeLineBreak(context); |
| } |
| break; |
| |
| case IBracesConfiguration.EMPTY_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| visitor.skipNextLineBreaks(context); |
| break; |
| |
| case IBracesConfiguration.ONE_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| visitor.writeText(context, JSLiterals.SPACE); |
| visitor.skipNextLineBreaks(context); |
| break; |
| } |
| } |
| |
| private void printAfterOpenBrace(IFormatterContext context, |
| IFormatterWriter visitor) throws Exception { |
| |
| switch (configuration.insertAfterOpenBrace()) { |
| |
| case IBracesConfiguration.LINE_BREAK: |
| if (isStatementNewLine()) { |
| context.setBlankLines(-1); |
| visitor.writeLineBreak(context); |
| } |
| break; |
| |
| case IBracesConfiguration.ONE_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| visitor.writeText(context, JSLiterals.SPACE); |
| visitor.skipNextLineBreaks(context); |
| break; |
| |
| default: |
| if (configuration.insertBeforeOpenBrace() != IBracesConfiguration.LINE_BREAK) { |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| if (configuration.insertBeforeCloseBrace() != IBracesConfiguration.EMPTY_SPACE) { |
| visitor.writeText(context, JSLiterals.SPACE); |
| } |
| visitor.skipNextLineBreaks(context); |
| } |
| break; |
| |
| } |
| } |
| |
| private void printBeforeOpenBrace(IFormatterContext context, |
| IFormatterWriter visitor) throws Exception { |
| switch (configuration.insertBeforeOpenBrace()) { |
| case IBracesConfiguration.LINE_BREAK: |
| if (isStatementNewLine()) { |
| context.setBlankLines(-1); |
| visitor.writeLineBreak(context); |
| } |
| break; |
| case IBracesConfiguration.ONE_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| visitor.writeText(context, JSLiterals.SPACE); |
| visitor.skipNextLineBreaks(context); |
| break; |
| case IBracesConfiguration.EMPTY_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.EMPTY); |
| visitor.skipNextLineBreaks(context); |
| break; |
| } |
| } |
| |
| private void printAfterCloseBrace(IFormatterContext context, |
| IFormatterWriter visitor) throws Exception { |
| |
| switch (configuration.insertAfterCloseBrace()) { |
| |
| case IBracesConfiguration.LINE_BREAK: |
| if (isStatementNewLine()) { |
| context.setBlankLines(-1); |
| visitor.writeLineBreak(context); |
| } |
| break; |
| |
| case IBracesConfiguration.ONE_SPACE: |
| visitor.appendToPreviousLine(context, JSLiterals.SPACE); |
| visitor.skipNextLineBreaks(context); |
| break; |
| |
| } |
| } |
| |
| @Override |
| protected boolean isIndenting() { |
| return configuration.isIndenting(); |
| } |
| |
| } |