/jEdit/tags/jedit-4-5-pre1/org/gjt/sp/jedit/indent/CloseBracketIndentRule.java
Java | 167 lines | 107 code | 18 blank | 42 comment | 16 complexity | 4879e85c032b7df502a4e36696c0c1cc MD5 | raw file
Possible License(s): BSD-3-Clause, AGPL-1.0, Apache-2.0, LGPL-2.0, LGPL-3.0, GPL-2.0, CC-BY-SA-3.0, LGPL-2.1, GPL-3.0, MPL-2.0-no-copyleft-exception, IPL-1.0
- /*
- * CloseBracketIndentRule.java
- * :tabSize=8:indentSize=8:noTabs=false:
- * :folding=explicit:collapseFolds=1:
- *
- * Copyright (C) 2005 Slava Pestov
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- package org.gjt.sp.jedit.indent;
- import java.util.List;
- import org.gjt.sp.jedit.buffer.JEditBuffer;
- import org.gjt.sp.jedit.TextUtilities;
- import org.gjt.sp.util.StandardUtilities;
- /**
- * @author Slava Pestov
- * @version $Id: CloseBracketIndentRule.java 18919 2010-11-04 10:52:55Z kpouer $
- */
- public class CloseBracketIndentRule extends BracketIndentRule
- {
- //{{{ CloseBracketIndentRule constructor
- public CloseBracketIndentRule(char closeBracket, boolean aligned)
- {
- super(TextUtilities.getComplementaryBracket(closeBracket,null),
- closeBracket);
- this.aligned = aligned;
- } //}}}
- //{{{ apply() method
- public void apply(JEditBuffer buffer, int thisLineIndex,
- int prevLineIndex, int prevPrevLineIndex,
- List<IndentAction> indentActions)
- {
- int index;
- if(aligned)
- index = thisLineIndex;
- else
- index = prevLineIndex;
- if(index == -1)
- return;
- CharSequence lineText = buffer.getLineSegment(index);
- int offset;
- for (offset = lineText.length() - 1; offset >= 0; offset--)
- {
- if (lineText.charAt(offset) == closeBracket)
- break;
- }
- if(offset == -1)
- return;
- int closeCount = getBrackets(buffer, index).closeCount;
- if(closeCount != 0)
- {
- AlignBracket alignBracket
- = new AlignBracket(buffer,index,offset);
- /*
- Consider the following Common Lisp code (with one more opening
- bracket than closing):
- (defun emit-push-long (arg)
- (cond ((eql arg 0)
- (emit 'lconst_0))
- ((eql arg 1)
- (emit 'lconst_1)))
- even though we have a closing bracket match on line 3,
- the next line must be indented relative to the
- corresponding opening bracket from line 1.
- */
- int openLine = alignBracket.getOpenBracketLine();
- if(openLine != -1)
- {
- int column = alignBracket.getOpenBracketColumn();
- alignBracket.setExtraIndent(
- getBrackets(buffer, openLine,
- 0, column).openCount);
- }
- indentActions.add(alignBracket);
- }
- } //}}}
- private boolean aligned;
- //{{{ AlignBracket class
- private static class AlignBracket implements IndentAction
- {
- private int line, offset;
- private int openBracketLine;
- private int openBracketColumn;
- private CharSequence openBracketLineText;
- private int extraIndent;
- public AlignBracket(JEditBuffer buffer, int line, int offset)
- {
- this.line = line;
- this.offset = offset;
- int openBracketIndex = TextUtilities.findMatchingBracket(
- buffer,this.line,this.offset);
- if(openBracketIndex == -1)
- openBracketLine = -1;
- else
- {
- openBracketLine = buffer.getLineOfOffset(openBracketIndex);
- openBracketColumn = openBracketIndex -
- buffer.getLineStartOffset(openBracketLine);
- openBracketLineText = buffer.getLineSegment(openBracketLine);
- }
- }
- public int getExtraIndent()
- {
- return extraIndent;
- }
- public void setExtraIndent(int extraIndent)
- {
- this.extraIndent = extraIndent;
- }
- public int getOpenBracketColumn()
- {
- return openBracketColumn;
- }
- public int getOpenBracketLine()
- {
- return openBracketLine;
- }
- public int calculateIndent(JEditBuffer buffer, int line, int oldIndent,
- int newIndent)
- {
- if(openBracketLineText == null)
- return newIndent;
- else
- {
- return StandardUtilities.getLeadingWhiteSpaceWidth(
- openBracketLineText,buffer.getTabSize())
- + (extraIndent * buffer.getIndentSize());
- }
- }
- public boolean keepChecking()
- {
- return false;
- }
- } //}}}
- }