| Clover coverage report - DrJava Test Coverage (drjava-20110828-r5448) |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ActionStartPrevStmtPlus.java | 87.5% | 95.2% | 100% | 93.3% |
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| 1 | /*BEGIN_COPYRIGHT_BLOCK | |
| 2 | * | |
| 3 | * Copyright (c) 2001-2010, JavaPLT group at Rice University (drjava@rice.edu) | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions are met: | |
| 8 | * * Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * * Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the | |
| 14 | * names of its contributors may be used to endorse or promote products | |
| 15 | * derived from this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | * | |
| 29 | * This software is Open Source Initiative approved Open Source Software. | |
| 30 | * Open Source Initative Approved is a trademark of the Open Source Initiative. | |
| 31 | * | |
| 32 | * This file is part of DrJava. Download the current version of this project | |
| 33 | * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/ | |
| 34 | * | |
| 35 | * END_COPYRIGHT_BLOCK*/ | |
| 36 | ||
| 37 | package edu.rice.cs.drjava.model.definitions.indent; | |
| 38 | ||
| 39 | import edu.rice.cs.drjava.model.AbstractDJDocument; | |
| 40 | import edu.rice.cs.util.UnexpectedException; | |
| 41 | ||
| 42 | import javax.swing.text.BadLocationException; | |
| 43 | ||
| 44 | /** Indents the current line in the document to the indent level of the start of the statement previous to the one the | |
| 45 | * cursor is currently on, plus the given suffix string. | |
| 46 | * | |
| 47 | * @version $Id: ActionStartPrevStmtPlus.java 5175 2010-01-20 08:46:32Z mgricken $ | |
| 48 | */ | |
| 49 | public class ActionStartPrevStmtPlus extends IndentRuleAction { | |
| 50 | private int _suffix; // number of blanks in suffix | |
| 51 | private boolean _useColon; | |
| 52 | ||
| 53 | /** Constructs a new rule with the given suffix string. | |
| 54 | * @param suffix String to append to indent level of brace | |
| 55 | * @param colonIsDelim whether to include colons as statement delimiters | |
| 56 | */ | |
| 57 | 2955 | public ActionStartPrevStmtPlus(int suffix, boolean colonIsDelim) { |
| 58 | 2952 | super(); |
| 59 | 2954 | _suffix = suffix; |
| 60 | 2954 | _useColon = colonIsDelim; |
| 61 | } | |
| 62 | ||
| 63 | /** Properly indents the line that the caret is currently on. Replaces all whitespace characters at the beginning of | |
| 64 | * the line with the appropriate spacing or characters. Assumes reduced lock is alread held [Archaic]. Only | |
| 65 | * runs in the event thread. | |
| 66 | * @param doc AbstractDJDocument containing the line to be indented. | |
| 67 | * @param reason The reason that the indentation is taking place | |
| 68 | * @return true if the caller should update the current location itself, false if the indenter has already handled it | |
| 69 | */ | |
| 70 | 94 | public boolean indentLine(AbstractDJDocument doc, Indenter.IndentReason reason) { |
| 71 | 94 | boolean supResult = super.indentLine(doc, reason); |
| 72 | 94 | int here = doc.getCurrentLocation(); |
| 73 | ||
| 74 | // Find end of previous statement, immediately enclosing brace, or end of case statement | |
| 75 | 94 | char[] delims = {';', '{', '}'}; |
| 76 | 94 | int lineStart = doc._getLineStartPos(here); // find start of current line |
| 77 | 94 | int prevDelimiterPos; |
| 78 | 94 | try { prevDelimiterPos = doc.findPrevDelimiter(lineStart, delims); } // find pos of delimiter preceding line start |
| 79 | 0 | catch (BadLocationException e) { throw new UnexpectedException(e); } |
| 80 | ||
| 81 | // If no preceding delimiter found, align to left margin | |
| 82 | 94 | if (prevDelimiterPos <= 0) { |
| 83 | 30 | doc.setTab(_suffix, here); |
| 84 | 30 | return supResult; |
| 85 | } | |
| 86 | ||
| 87 | 64 | try { |
| 88 | 64 | char delim = doc.getText(prevDelimiterPos, 1).charAt(0); // get delimiter char |
| 89 | 64 | char[] ws = {' ', '\t', '\n', ';'}; // Why is ';' a delimiter? |
| 90 | 64 | if (delim == ';') { |
| 91 | 48 | int testPos = doc._findPrevCharPos(prevDelimiterPos, ws); // find char preceding ';' delimiter |
| 92 | 48 | char testDelim = doc.getText(testPos,1).charAt(0); |
| 93 | 48 | if ( testDelim == '}' || testDelim == ')') { |
| 94 | 24 | prevDelimiterPos = testPos; // if this char is '}' or ')', use it as delimiter |
| 95 | } | |
| 96 | } | |
| 97 | } catch (BadLocationException e) { | |
| 98 | //do nothing | |
| 99 | } | |
| 100 | ||
| 101 | 64 | try { |
| 102 | // Jump over {-} region if delimiter was a close brace. | |
| 103 | 64 | char delim = doc.getText(prevDelimiterPos, 1).charAt(0); |
| 104 | ||
| 105 | 64 | if (delim == '}' || delim == ')') { |
| 106 | //BraceReduction reduced = doc.getReduced(); | |
| 107 | //we're pretty sure the doc is in sync. | |
| 108 | // doc.resetReducedModelLocation(); // why reset the reduced model comment walker? | |
| 109 | ||
| 110 | 40 | assert doc.getCurrentLocation() == here; |
| 111 | 40 | doc.setCurrentLocation(prevDelimiterPos + 1); // move cursor to right of '}' or ')' delim |
| 112 | 40 | int delta = doc.balanceBackward(); // Number of chars backward to matching '{' or '(' |
| 113 | 40 | if (delta < 0) { // no matching delimiter! |
| 114 | // No matching '{' or '(' preceding this delimiter here | |
| 115 | // but throwing an unexpected exception is not right, because the | |
| 116 | // user may be trying to indent code that is not balanced! | |
| 117 | 5 | return supResult; |
| 118 | } | |
| 119 | 35 | prevDelimiterPos -= delta - 1; // Position just to right of matching '{' or '(' |
| 120 | 35 | doc.setCurrentLocation(here); |
| 121 | ||
| 122 | 35 | assert doc.getText(prevDelimiterPos, 1).charAt(0) == '{' || |
| 123 | doc.getText(prevDelimiterPos, 1).charAt(0) == '('; | |
| 124 | } | |
| 125 | } | |
| 126 | 0 | catch (BadLocationException e) { throw new UnexpectedException(e); } |
| 127 | ||
| 128 | ||
| 129 | // Get indent of prev statement | |
| 130 | // Include colons as end of statement (ie. "case") | |
| 131 | 59 | char[] indentDelims; |
| 132 | 59 | char[] indentDelimsWithColon = {';', '{', '}', ':'}; |
| 133 | 59 | char[] indentDelimsWithoutColon = {';', '{', '}'}; |
| 134 | 51 | if (_useColon) indentDelims = indentDelimsWithColon; |
| 135 | 8 | else indentDelims = indentDelimsWithoutColon; |
| 136 | ||
| 137 | 59 | int indent = doc._getIndentOfCurrStmt(prevDelimiterPos, indentDelims); |
| 138 | ||
| 139 | 59 | indent = indent + _suffix; |
| 140 | 59 | doc.setTab(indent, here); |
| 141 | 59 | return supResult; |
| 142 | } | |
| 143 | } | |
| 144 |
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