+++ /dev/null
-/**********************************************************************
- Copyright (c) 2000, 2002 IBM Corp. and others.
- All rights reserved. This program and the accompanying materials
- are made available under the terms of the Common Public License v1.0
- which accompanies this distribution, and is available at
- http://www.eclipse.org/legal/cpl-v10.html
-
- Contributors:
- IBM Corporation - Initial implementation
- www.phpeclipse.de
- **********************************************************************/
-package net.sourceforge.phpeclipse.phpeditor.php;
-
-import org.eclipse.jface.text.BadLocationException;
-import org.eclipse.jface.text.DefaultIndentLineAutoEditStrategy;
-import org.eclipse.jface.text.DocumentCommand;
-import org.eclipse.jface.text.IDocument;
-
-/**
- * Auto indent strategy sensitive to brackets.
- */
-public class PHPAutoIndentStrategy extends DefaultIndentLineAutoEditStrategy {
-
- public PHPAutoIndentStrategy() {
- }
-
- /*
- * (non-Javadoc) Method declared on IAutoIndentStrategy
- */
- public void customizeDocumentCommand(IDocument d, DocumentCommand c) {
- if (c.length == 0 && c.text != null && endsWithDelimiter(d, c.text))
- smartIndentAfterNewLine(d, c);
- else if ("}".equals(c.text)) {
- smartInsertAfterBracket(d, c);
- }
- }
-
- /**
- * Returns whether or not the text ends with one of the given search
- * strings.
- */
- private boolean endsWithDelimiter(IDocument d, String txt) {
-
- String[] delimiters = d.getLegalLineDelimiters();
-
- for (int i = 0; i < delimiters.length; i++) {
- if (txt.endsWith(delimiters[i]))
- return true;
- }
-
- return false;
- }
-
- /**
- * Returns the line number of the next bracket after end.
- *
- * @returns the line number of the next matching bracket after end
- * @param document -
- * the document being parsed
- * @param line -
- * the line to start searching back from
- * @param end -
- * the end position to search back from
- * @param closingBracketIncrease -
- * the number of brackets to skip
- */
- protected int findMatchingOpenBracket(IDocument document, int line,
- int end, int closingBracketIncrease) throws BadLocationException {
-
- int start = document.getLineOffset(line);
- int brackcount = getBracketCount(document, start, end, false)
- - closingBracketIncrease;
-
- // sum up the brackets counts of each line (closing brackets count
- // negative,
- // opening positive) until we find a line the brings the count to zero
- while (brackcount < 0) {
- line--;
- if (line < 0) {
- return -1;
- }
- start = document.getLineOffset(line);
- end = start + document.getLineLength(line) - 1;
- brackcount += getBracketCount(document, start, end, false);
- }
- return line;
- }
-
- /**
- * Returns the bracket value of a section of text. Closing brackets have a
- * value of -1 and open brackets have a value of 1.
- *
- * @returns the line number of the next matching bracket after end
- * @param document -
- * the document being parsed
- * @param start -
- * the start position for the search
- * @param end -
- * the end position for the search
- * @param ignoreCloseBrackets -
- * whether or not to ignore closing brackets in the count
- */
- private int getBracketCount(IDocument document, int start, int end,
- boolean ignoreCloseBrackets) throws BadLocationException {
-
- int begin = start;
- int bracketcount = 0;
- while (begin < end) {
- char curr = document.getChar(begin);
- begin++;
- switch (curr) {
- case '/':
- if (begin < end) {
- char next = document.getChar(begin);
- if (next == '*') {
- // a comment starts, advance to the comment end
- begin = getCommentEnd(document, begin + 1, end);
- } else if (next == '/') {
- // '//'-comment: nothing to do anymore on this line
- begin = end;
- }
- }
- break;
- case '*':
- if (begin < end) {
- char next = document.getChar(begin);
- if (next == '/') {
- // we have been in a comment: forget what we read before
- bracketcount = 0;
- begin++;
- }
- }
- break;
- case '{':
- bracketcount++;
- ignoreCloseBrackets = false;
- break;
- case '}':
- if (!ignoreCloseBrackets) {
- bracketcount--;
- }
- break;
- case '"':
- case '\'':
- begin = getStringEnd(document, begin, end, curr);
- break;
- default:
- }
- }
- return bracketcount;
- }
-
- /**
- * Returns the end position a comment starting at pos.
- *
- * @returns the end position a comment starting at pos
- * @param document -
- * the document being parsed
- * @param position -
- * the start position for the search
- * @param end -
- * the end position for the search
- */
- private int getCommentEnd(IDocument document, int position, int end)
- throws BadLocationException {
- int currentPosition = position;
- while (currentPosition < end) {
- char curr = document.getChar(currentPosition);
- currentPosition++;
- if (curr == '*') {
- if (currentPosition < end
- && document.getChar(currentPosition) == '/') {
- return currentPosition + 1;
- }
- }
- }
- return end;
- }
-
- /**
- * Returns the String at line with the leading whitespace removed.
- *
- * @returns the String at line with the leading whitespace removed.
- * @param document -
- * the document being parsed
- * @param line -
- * the line being searched
- */
- protected String getIndentOfLine(IDocument document, int line)
- throws BadLocationException {
- if (line > -1) {
- int start = document.getLineOffset(line);
- int end = start + document.getLineLength(line) - 1;
- int whiteend = findEndOfWhiteSpace(document, start, end);
- return document.get(start, whiteend - start);
- } else {
- return ""; //$NON-NLS-1$
- }
- }
-
- /**
- * Returns the position of the character in the document after position.
- *
- * @returns the next location of character.
- * @param document -
- * the document being parsed
- * @param position -
- * the position to start searching from
- * @param end -
- * the end of the document
- * @param character -
- * the character you are trying to match
- */
- private int getStringEnd(IDocument document, int position, int end,
- char character) throws BadLocationException {
- int currentPosition = position;
- while (currentPosition < end) {
- char currentCharacter = document.getChar(currentPosition);
- currentPosition++;
- if (currentCharacter == '\\') {
- // ignore escaped characters
- currentPosition++;
- } else if (currentCharacter == character) {
- return currentPosition;
- }
- }
- return end;
- }
-
- /**
- * Set the indent of a new line based on the command provided in the
- * supplied document.
- *
- * @param document -
- * the document being parsed
- * @param command -
- * the command being performed
- */
- protected void smartIndentAfterNewLine(IDocument document,
- DocumentCommand command) {
-
- int docLength = document.getLength();
- if (command.offset == -1 || docLength == 0)
- return;
-
- try {
- int p = (command.offset == docLength ? command.offset - 1
- : command.offset);
- int line = document.getLineOfOffset(p);
-
- StringBuffer buf = new StringBuffer(command.text);
- if (command.offset < docLength
- && document.getChar(command.offset) == '}') {
- int indLine = findMatchingOpenBracket(document, line,
- command.offset, 0);
- if (indLine == -1) {
- indLine = line;
- }
- buf.append(getIndentOfLine(document, indLine));
- } else {
- int start = document.getLineOffset(line);
- int whiteend = findEndOfWhiteSpace(document, start,
- command.offset);
- //int offset = -1;
- // if (command.offset > 0 && command.offset < docLength &&
- // document.getChar(command.offset-1) == '{') {
- // offset = command.offset;
- // }
- buf.append(document.get(start, whiteend - start));
- if (getBracketCount(document, start, command.offset, true) > 0) {
- buf.append('\t');
- }
- // if (offset >= 0) {
- // buf.append('}');
- // }
- }
- command.text = buf.toString();
-
- } catch (BadLocationException excp) {
- System.out.println(PHPEditorMessages
- .getString("AutoIndent.error.bad_location_1")); //$NON-NLS-1$
- }
- }
-
- /**
- * Set the indent of a bracket based on the command provided in the supplied
- * document.
- *
- * @param document -
- * the document being parsed
- * @param command -
- * the command being performed
- */
- protected void smartInsertAfterBracket(IDocument document,
- DocumentCommand command) {
- if (command.offset == -1 || document.getLength() == 0)
- return;
-
- try {
- int p = (command.offset == document.getLength() ? command.offset - 1
- : command.offset);
- int line = document.getLineOfOffset(p);
- int start = document.getLineOffset(line);
- int whiteend = findEndOfWhiteSpace(document, start, command.offset);
-
- // shift only when line does not contain any text up to the closing
- // bracket
- if (whiteend == command.offset) {
- // evaluate the line with the opening bracket that matches out
- // closing bracket
- int indLine = findMatchingOpenBracket(document, line,
- command.offset, 1);
- if (indLine != -1 && indLine != line) {
- // take the indent of the found line
- StringBuffer replaceText = new StringBuffer(
- getIndentOfLine(document, indLine));
- // add the rest of the current line including the just added
- // close bracket
- replaceText.append(document.get(whiteend, command.offset
- - whiteend));
- replaceText.append(command.text);
- // modify document command
- command.length = command.offset - start;
- command.offset = start;
- command.text = replaceText.toString();
- }
- }
- } catch (BadLocationException excp) {
- System.out.println(PHPEditorMessages
- .getString("AutoIndent.error.bad_location_2")); //$NON-NLS-1$
- }
- }
-}
git://secure.phpeclipse.com / phpeclipse.git / blobdiff