diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/SourceParser/Parsers/ParserSrcMethod.cs --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/SourceParser/Parsers/ParserSrcMethod.cs Thu Feb 11 15:50:58 2010 +0200 @@ -0,0 +1,234 @@ +/* +* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: +* +*/ +using System; +using System.Collections.Generic; +using System.Text; +using SymbianUtils.SourceParser.Objects; +using SymbianUtils.SourceParser.Parsers; + +namespace SymbianUtils.SourceParser.Parsers +{ + public class ParserSrcMethod + { + #region Constructors + public ParserSrcMethod() + { + } + #endregion + + #region API + public SrcMethod Parse( ref string aText ) + { + SrcMethod ret = null; + // + if ( aText.Length > 0 ) + { + string parameters = string.Empty; + // + if ( ContainsParameters( aText ) ) + { + // This leaves modifiers intact + parameters = ExtractParameters( ref aText ); + } + + // Look for the class separator. If we find that, then everything after + // it is the method name. + // + // If no class separator exists, then we treat the whole thing as the method + // name. + int pos = aText.IndexOf( SrcClass.KClassSeparator ); + + // By default, treat the whole text as the class name + string methodText = aText; + if ( pos >= 0 ) + { + methodText = aText.Substring( pos + SrcClass.KClassSeparator.Length ); + aText = aText.Substring( 0, pos + SrcClass.KClassSeparator.Length ); + } + else + { + // Everything was consumed... + aText = string.Empty; + } + + // Make a new method. Work out if the method text + // actually has any parameters + ret = new SrcMethod(); + + // Try to parse the modifiers. We extract that first + // to leave us with just the method name and the parameters. + bool hasModifier = ContainsModifier( methodText ); + if ( hasModifier ) + { + ParserSrcMethodModifier parser = new ParserSrcMethodModifier(); + SrcMethodModifier modifier = parser.Parse( ref methodText ); + if ( modifier != null ) + { + ret.Modifier = modifier; + } + } + + // Try to parse the parameters. We can also use this + // to calculate the exact method name. + if ( parameters.Length > 0 ) + { + ParserSrcMethodParameter parser = new ParserSrcMethodParameter(); + parser.Parse( ref parameters, ret ); + } + + // What's left should be the method name followed by "()" if the + // 'method' wasn't a label. + if ( ContainsParameters( methodText ) ) + { + // Discard "()"; + pos = methodText.LastIndexOf( "(" ); + methodText = methodText.Substring( 0, pos ); + } + + ret.Name = methodText; + } + // + return ret; + } + #endregion + + #region Properties + #endregion + + #region Internal methods + private static bool ContainsParameters( string aText ) + { + // Search initiall for '(' - if that is found, then + // we should also find a closing bracket. + bool parameters = false; + int openingBracketPos = aText.IndexOf( "(" ); + // + if ( openingBracketPos > 0 ) + { + // Should also be a closing bracket and it should + // appear after the opening bracket + int closingBracketPos = aText.LastIndexOf( ")" ); + parameters = ( closingBracketPos > openingBracketPos ); + } + // + return parameters; + } + + private static bool ContainsModifier( string aText ) + { + bool modifiers = false; + + int openingBracketPos = aText.IndexOf( "(" ); + if ( openingBracketPos >= 0 ) + { + int closingBracketPos = openingBracketPos; + SymbianUtils.Strings.StringParsingUtils.SkipToEndOfSection( ref aText, ref closingBracketPos, '(', ')' ); + + if ( closingBracketPos > openingBracketPos ) + { + // everything here on is the modifier text; + string modifierText = aText.Substring( closingBracketPos + 1 ); + modifiers = ( modifierText.Trim().Length > 0 ); + } + } + // + return modifiers; + } + + private static string ExtractParameters( ref string aText ) + { + const string KOperatorChevronText = "operator <<"; + + // DoAppendFormatList(T1&, const T3&, std::__va_list, T2*) + // DoAppendFormatList(T1&, TBuf<(int)256>, std::__va_list, T2*) + // Method::Wibble( something ) + // Method::Wibble( RPointerArray ) + // RTest::operator ()(int, int, const unsigned short*) + // TDesC16::Left(int) const + // CObjectCon::AtL(int) const + // User::Panic(const TDesC16&, int) + // operator <<(RWriteStream&, const unsigned char&) + + // Handle special case of "operator <<" confusing matters + string workingText = aText; + int operatorOpeningChevronPos = aText.IndexOf( KOperatorChevronText ); + if ( operatorOpeningChevronPos >= 0 ) + { + aText = aText.Substring( 0, operatorOpeningChevronPos + KOperatorChevronText.Length ); + workingText = workingText.Substring( operatorOpeningChevronPos + KOperatorChevronText.Length ); + } + else + { + aText = string.Empty; + } + + string ret = string.Empty; + // + int closingPos = 0; + int openingPos = 0; + int templatePos = 0; + // + while ( openingPos >= 0 ) + { + if ( templatePos >= 0 ) + templatePos = workingText.IndexOf( "<", templatePos ); + openingPos = workingText.IndexOf( "(", openingPos ); + + if ( templatePos >= 0 && templatePos < openingPos ) + { + // Template region appears before the next bracket. Skip + // over all characters until we hit the end of the template + // section + int endingPos = templatePos; + SymbianUtils.Strings.StringParsingUtils.SkipToEndOfSection( ref workingText, ref endingPos, '<', '>' ); + + if ( endingPos < 0 ) + { + // Matching closing brace was never found - dealing with operator << ? + templatePos = -1; + } + else + { + // Something like DoAppendFormatList(T1&, const T3&, std::__va_list, T2*) ??? + templatePos = endingPos; + openingPos = endingPos; + } + } + else if ( openingPos >= 0 ) + { + // Skipped over any template nonsense. Work backward from the end + // in order to locate start of parameters. + closingPos = workingText.LastIndexOf( ')' ); + openingPos = closingPos; + SymbianUtils.Strings.StringParsingUtils.SkipToBeginningOfSection( ref workingText, ref openingPos, '(', ')' ); + + string parameters = workingText.Substring( openingPos + 1, ( closingPos - openingPos ) - 1 ).Trim(); + ret = parameters; + workingText = workingText.Substring( 0, openingPos + 1 ) + workingText.Substring( closingPos ); + aText = aText + workingText; + break; + } + } + // + return ret; + } + #endregion + + #region Data members + #endregion + } +}