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Viewing changes to src/AddIns/BackendBindings/VBNetBinding/Project/Src/LanguageUtils.cs

  • Committer: sk
  • Date: 2011-09-10 05:17:57 UTC
  • Revision ID: halega@halega.com-20110910051757-qfouz1llya9m6boy
4.1.0.7915 Release Candidate 1

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src/AddIns/BackendBindings/VBNetBinding/Project/Src/LanguageUtils.cs
 
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
 
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
 
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using System;
 
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using System.Text.RegularExpressions;
 
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using ICSharpCode.SharpDevelop.Editor;
 
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namespace ICSharpCode.VBNetBinding
 
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{
 
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        public static class LanguageUtils
 
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        {
 
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                public static string TrimComments(this string line)
 
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                {
 
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                        if (string.IsNullOrEmpty(line))
 
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                                return string.Empty;
 
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                        bool inStr = false;
 
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                        for (int i = 0; i < line.Length; i++) {
 
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                                if (line[i] == '"')
 
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                                        inStr = !inStr;
 
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                                if (line[i] == '\'' && !inStr)
 
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                                        return line.Substring(0, i);
 
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                        }
 
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                        return line;
 
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                }
 
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                public static string TrimPreprocessorDirectives(this string line)
 
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                {
 
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                        if (string.IsNullOrEmpty(line))
 
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                                return string.Empty;
 
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                        bool wsOnly = true;
 
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                        for (int i = 0; i < line.Length; i++) {
 
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                                if (line[i] == '#' && wsOnly) {
 
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                                        if (i < line.Length - 1) {
 
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                                                if (char.IsLetter(line[i + 1]))
 
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                                                        return line.Substring(0, i);
 
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                                        } else
 
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                                                return line.Substring(0, i);
 
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                                }
 
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                                if (!char.IsWhiteSpace(line[i]))
 
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                                        wsOnly = false;
 
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                        }
 
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                        return line;
 
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                }
 
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                public static string TrimLine(this string line)
 
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                {
 
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                        if (string.IsNullOrEmpty(line))
 
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                                return string.Empty;
 
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                        // remove string content
 
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                        MatchCollection matches = Regex.Matches(line, "\"[^\"]*?\"", RegexOptions.Singleline);
 
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                        foreach (Match match in matches) {
 
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                                line = line.Remove(match.Index, match.Length).Insert(match.Index, new string('-', match.Length));
 
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                        }
 
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                        // remove comments
 
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                        return TrimComments(line);
 
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                }
 
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                public static bool IsInsideDocumentationComment(ITextEditor editor)
 
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                {
 
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                        return IsInsideDocumentationComment(editor, editor.Document.GetLineForOffset(editor.Caret.Offset), editor.Caret.Offset);
 
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                }
 
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                public static bool IsInsideDocumentationComment(ITextEditor editor, IDocumentLine curLine, int cursorOffset)
 
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                {
 
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                        for (int i = curLine.Offset; i < cursorOffset; ++i) {
 
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                                char ch = editor.Document.GetCharAt(i);
 
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                                if (ch == '"')
 
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                                        return false;
 
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                                if (ch == '\'' && i + 2 < cursorOffset && editor.Document.GetCharAt(i + 1) == '\'' &&
 
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                                    editor.Document.GetCharAt(i + 2) == '\'')
 
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                                        return true;
 
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                        }
 
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                        return false;
 
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                }
 
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        }
 
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}