Пример #1
0
        private char lastRealChar; // last non-comment char

        public void Reformat(IDocumentAccessor doc, IndentationSettings set)
        {
            Init();

            while (doc.MoveNext())
            {
                Step(doc, set);
            }
        }
Пример #2
0
        /// <summary>
        /// Performs indentation using the specified document accessor.
        /// </summary>
        /// <param name="document">Object used for accessing the document line-by-line</param>
        /// <param name="keepEmptyLines">Specifies whether empty lines should be kept</param>
        public void Indent(IDocumentAccessor document, bool keepEmptyLines)
        {
            if (document == null)
            {
                throw new ArgumentNullException("document");
            }
            IndentationSettings settings = new IndentationSettings();

            settings.IndentString    = IndentationString;
            settings.LeaveEmptyLines = keepEmptyLines;

            IndentationReformatter r = new IndentationReformatter();

            r.Reformat(document, settings);
        }
Пример #3
0
 public void Indent(IndentationSettings set)
 {
     Indent(set.IndentString);
 }
Пример #4
0
        public void Step(IDocumentAccessor doc, IndentationSettings set)
        {
            string line = doc.Text;

            if (set.LeaveEmptyLines && line.Length == 0)
            {
                return;                                          // leave empty lines empty
            }
            line = line.TrimStart();

            StringBuilder indent = new StringBuilder();

            if (line.Length == 0)
            {
                // Special treatment for empty lines:
                if (blockComment || (inString && verbatim))
                {
                    return;
                }
                indent.Append(block.InnerIndent);
                indent.Append(Repeat(set.IndentString, block.OneLineBlock));
                if (block.Continuation)
                {
                    indent.Append(set.IndentString);
                }
                if (doc.Text != indent.ToString())
                {
                    doc.Text = indent.ToString();
                }
                return;
            }

            if (TrimEnd(doc))
            {
                line = doc.Text.TrimStart();
            }

            Block oldBlock       = block;
            bool  startInComment = blockComment;
            bool  startInString  = (inString && verbatim);

            #region Parse char by char
            lineComment = false;
            inChar      = false;
            escape      = false;
            if (!verbatim)
            {
                inString = false;
            }

            lastRealChar = '\n';

            char lastchar = ' ';
            char c        = ' ';
            char nextchar = line[0];
            for (int i = 0; i < line.Length; i++)
            {
                if (lineComment)
                {
                    break;              // cancel parsing current line
                }
                lastchar = c;
                c        = nextchar;
                if (i + 1 < line.Length)
                {
                    nextchar = line[i + 1];
                }
                else
                {
                    nextchar = '\n';
                }

                if (escape)
                {
                    escape = false;
                    continue;
                }

                #region Check for comment/string chars
                switch (c)
                {
                case '/':
                    if (blockComment && lastchar == '*')
                    {
                        blockComment = false;
                    }
                    if (!inString && !inChar)
                    {
                        if (!blockComment && nextchar == '/')
                        {
                            lineComment = true;
                        }
                        if (!lineComment && nextchar == '*')
                        {
                            blockComment = true;
                        }
                    }
                    break;

                case '#':
                    if (!(inChar || blockComment || inString))
                    {
                        lineComment = true;
                    }
                    break;

                case '"':
                    if (!(inChar || lineComment || blockComment))
                    {
                        inString = !inString;
                        if (!inString && verbatim)
                        {
                            if (nextchar == '"')
                            {
                                escape   = true;   // skip escaped quote
                                inString = true;
                            }
                            else
                            {
                                verbatim = false;
                            }
                        }
                        else if (inString && lastchar == '@')
                        {
                            verbatim = true;
                        }
                    }
                    break;

                case '\'':
                    if (!(inString || lineComment || blockComment))
                    {
                        inChar = !inChar;
                    }
                    break;

                case '\\':
                    if ((inString && !verbatim) || inChar)
                    {
                        escape = true;     // skip next character
                    }
                    break;
                }
                #endregion

                if (lineComment || blockComment || inString || inChar)
                {
                    if (wordBuilder.Length > 0)
                    {
                        block.LastWord = wordBuilder.ToString();
                    }
                    wordBuilder.Length = 0;
                    continue;
                }

                if (!Char.IsWhiteSpace(c) && c != '[' && c != '/')
                {
                    if (block.Bracket == '{')
                    {
                        block.Continuation = true;
                    }
                }

                if (Char.IsLetterOrDigit(c))
                {
                    wordBuilder.Append(c);
                }
                else
                {
                    if (wordBuilder.Length > 0)
                    {
                        block.LastWord = wordBuilder.ToString();
                    }
                    wordBuilder.Length = 0;
                }

                #region Push/Pop the blocks
                switch (c)
                {
                case '{':
                    block.ResetOneLineBlock();
                    blocks.Push(block);
                    block.StartLine = doc.LineNumber;
                    if (block.LastWord == "switch")
                    {
                        block.Indent(set.IndentString + set.IndentString);

                        /* oldBlock refers to the previous line, not the previous block
                         * The block we want is not available anymore because it was never pushed.
                         * } else if (oldBlock.OneLineBlock) {
                         *                          // Inside a one-line-block is another statement
                         *                          // with a full block: indent the inner full block
                         *                          // by one additional level
                         *                          block.Indent(set, set.IndentString + set.IndentString);
                         *                          block.OuterIndent += set.IndentString;
                         *                          // Indent current line if it starts with the '{' character
                         *                          if (i == 0) {
                         *                                  oldBlock.InnerIndent += set.IndentString;
                         *                          }*/
                    }
                    else
                    {
                        block.Indent(set);
                    }
                    block.Bracket = '{';
                    break;

                case '}':
                    while (block.Bracket != '{')
                    {
                        if (blocks.Count == 0)
                        {
                            break;
                        }
                        block = blocks.Pop();
                    }
                    if (blocks.Count == 0)
                    {
                        break;
                    }
                    block = blocks.Pop();
                    block.Continuation = false;
                    block.ResetOneLineBlock();
                    break;

                case '(':
                case '[':
                    blocks.Push(block);
                    if (block.StartLine == doc.LineNumber)
                    {
                        block.InnerIndent = block.OuterIndent;
                    }
                    else
                    {
                        block.StartLine = doc.LineNumber;
                    }
                    block.Indent(Repeat(set.IndentString, oldBlock.OneLineBlock) +
                                 (oldBlock.Continuation ? set.IndentString : "") +
                                 (i == line.Length - 1 ? set.IndentString : new String(' ', i + 1)));
                    block.Bracket = c;
                    break;

                case ')':
                    if (blocks.Count == 0)
                    {
                        break;
                    }
                    if (block.Bracket == '(')
                    {
                        block = blocks.Pop();
                        if (IsSingleStatementKeyword(block.LastWord))
                        {
                            block.Continuation = false;
                        }
                    }
                    break;

                case ']':
                    if (blocks.Count == 0)
                    {
                        break;
                    }
                    if (block.Bracket == '[')
                    {
                        block = blocks.Pop();
                    }
                    break;

                case ';':
                case ',':
                    block.Continuation = false;
                    block.ResetOneLineBlock();
                    break;

                case ':':
                    if (block.LastWord == "case" ||
                        line.StartsWith("case ", StringComparison.Ordinal) ||
                        line.StartsWith(block.LastWord + ":", StringComparison.Ordinal))
                    {
                        block.Continuation = false;
                        block.ResetOneLineBlock();
                    }
                    break;
                }

                if (!Char.IsWhiteSpace(c))
                {
                    // register this char as last char
                    lastRealChar = c;
                }
                #endregion
            }
            #endregion

            if (wordBuilder.Length > 0)
            {
                block.LastWord = wordBuilder.ToString();
            }
            wordBuilder.Length = 0;

            if (startInString)
            {
                return;
            }
            if (startInComment && line[0] != '*')
            {
                return;
            }
            if (doc.Text.StartsWith("//\t", StringComparison.Ordinal) || doc.Text == "//")
            {
                return;
            }

            if (line[0] == '}')
            {
                indent.Append(oldBlock.OuterIndent);
                oldBlock.ResetOneLineBlock();
                oldBlock.Continuation = false;
            }
            else
            {
                indent.Append(oldBlock.InnerIndent);
            }

            if (indent.Length > 0 && oldBlock.Bracket == '(' && line[0] == ')')
            {
                indent.Remove(indent.Length - 1, 1);
            }
            else if (indent.Length > 0 && oldBlock.Bracket == '[' && line[0] == ']')
            {
                indent.Remove(indent.Length - 1, 1);
            }

            if (line[0] == ':')
            {
                oldBlock.Continuation = true;
            }
            else if (lastRealChar == ':' && indent.Length >= set.IndentString.Length)
            {
                if (block.LastWord == "case" || line.StartsWith("case ", StringComparison.Ordinal) || line.StartsWith(block.LastWord + ":", StringComparison.Ordinal))
                {
                    indent.Remove(indent.Length - set.IndentString.Length, set.IndentString.Length);
                }
            }
            else if (lastRealChar == ')')
            {
                if (IsSingleStatementKeyword(block.LastWord))
                {
                    block.OneLineBlock++;
                }
            }
            else if (lastRealChar == 'e' && block.LastWord == "else")
            {
                block.OneLineBlock    = Math.Max(1, block.PreviousOneLineBlock);
                block.Continuation    = false;
                oldBlock.OneLineBlock = block.OneLineBlock - 1;
            }

            if (doc.IsReadOnly)
            {
                // We can't change the current line, but we should accept the existing
                // indentation if possible (=if the current statement is not a multiline
                // statement).
                if (!oldBlock.Continuation && oldBlock.OneLineBlock == 0 &&
                    oldBlock.StartLine == block.StartLine &&
                    block.StartLine < doc.LineNumber && lastRealChar != ':')
                {
                    // use indent StringBuilder to get the indentation of the current line
                    indent.Length = 0;
                    line          = doc.Text; // get untrimmed line
                    for (int i = 0; i < line.Length; ++i)
                    {
                        if (!Char.IsWhiteSpace(line[i]))
                        {
                            break;
                        }
                        indent.Append(line[i]);
                    }
                    // /* */ multiline comments have an extra space - do not count it
                    // for the block's indentation.
                    if (startInComment && indent.Length > 0 && indent[indent.Length - 1] == ' ')
                    {
                        indent.Length -= 1;
                    }
                    block.InnerIndent = indent.ToString();
                }
                return;
            }

            if (line[0] != '{')
            {
                if (line[0] != ')' && oldBlock.Continuation && oldBlock.Bracket == '{')
                {
                    indent.Append(set.IndentString);
                }
                indent.Append(Repeat(set.IndentString, oldBlock.OneLineBlock));
            }

            // this is only for blockcomment lines starting with *,
            // all others keep their old indentation
            if (startInComment)
            {
                indent.Append(' ');
            }

            if (indent.Length != (doc.Text.Length - line.Length) ||
                !doc.Text.StartsWith(indent.ToString(), StringComparison.Ordinal) ||
                Char.IsWhiteSpace(doc.Text[indent.Length]))
            {
                doc.Text = indent.ToString() + line;
            }
        }