diff options
Diffstat (limited to 'languages/cpp/stringhelpers.cpp')
| -rw-r--r-- | languages/cpp/stringhelpers.cpp | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/languages/cpp/stringhelpers.cpp b/languages/cpp/stringhelpers.cpp new file mode 100644 index 00000000..d380fd64 --- /dev/null +++ b/languages/cpp/stringhelpers.cpp @@ -0,0 +1,299 @@ + +/*************************************************************************** +k copyright : (C) 2006 by David Nolden + email : david.nolden.kdevelop@art-master.de +***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + ***************************************************************************/ + +#include "stringhelpers.h" +#include "safetycounter.h" + +namespace StringHelpers +{ + +void clearStr( QString& str, int start, int end ) { + for( int a = start; a < end; a++) str[a] = ' '; +} + +bool isValidIdentifierSign( const QChar& c ) { + if( c.isLetter() || c.isDigit() || c == '_' ) return true; + else return false; +} + + +QString clearComments( QString str ) { + if( str.isEmpty() ) return ""; + + SafetyCounter s( 1000 ); + int lastPos = 0; + int pos; + int len = str.length(); + while( (pos = str.find( "/*", lastPos )) != -1 ) { + if( !s ) return str; + int i = str.find( "*/", pos ); + if( i != -1 && i <= len - 2 ) { + clearStr( str, pos, i+2 ); + lastPos = i+2; + if( lastPos == len ) break; + } else { + break; + } + } + + lastPos = 0; + while( (pos = str.find( "//", lastPos )) != -1 ) { + if( !s ) return str; + int i = str.find( "\n", pos ); + if( i != -1 && i <= len - 1 ) { + clearStr( str, pos, i+1 ); + lastPos = i+1; + } else { + clearStr( str, pos, len ); + break; + } + } + + return str; +} + +QString cutTemplateParams( QString str ) { + int p; + if( (p = str.find('<') ) != -1) { + return str.left( p ); + } + + return str.stripWhiteSpace().replace('*',""); +} + +QPair<QString, QString> splitTemplateParams( QString str ) { + QPair<QString, QString> ret; + int p; + if( (p = str.find('<') ) != -1) { + ret.first = str.left( p ).stripWhiteSpace(); + ret.second = str.mid( p ).stripWhiteSpace(); + } else { + ret.first = str.stripWhiteSpace(); + } + + return ret; +} + +bool parenFits( QChar c1, QChar c2 ) { + if( c1 == '<' && c2 == '>' ) return true; + else if( c1 == '(' && c2 == ')' ) return true; + else if( c1 == '[' && c2 == ']' ) return true; + else if( c1 == '{' && c2 == '}' ) return true; + else + return false; +} + +bool isParen( QChar c1 ) { + if( c1 == '<' || c1 == '>' ) return true; + else if( c1 == '(' || c1 == ')' ) return true; + else if( c1 == '[' || c1 == ']' ) return true; + else if( c1 == '{' || c1 == '}' ) return true; + else + return false; +} + +bool isTypeParen( QChar c1 ) { + if( c1 == '<' || c1 == '>' ) return true; + else + return false; +} + +bool isTypeOpenParen( QChar c1 ) { + if( c1 == '<' ) return true; + else + return false; +} + +bool isTypeCloseParen( QChar c1 ) { + if( c1 == '>' ) return true; + else + return false; +} + +bool isLeftParen( QChar c1 ) { + if( c1 == '<' ) return true; + else if( c1 == '(' ) return true; + else if( c1 == '[' ) return true; + else if( c1 == '{' ) return true; + else + return false; +} + +int findClose( const QString& str , int pos ) { + int depth = 0; + QValueList<QChar> st; + QChar last = ' '; + + for( int a = pos; a < (int)str.length(); a++) { + switch(str[a]) { + case '<': + case '(': + case '[': + case '{': + st.push_front( str[a] ); + depth++; + break; + case '>': + if( last == '-' ) break; + case ')': + case ']': + case '}': + if( !st.isEmpty() && parenFits(st.front(), str[a]) ) { + depth--; + st.pop_front(); + } + break; + case '"': + last = str[a]; + a++; + while( a < (int)str.length() && (str[a] != '"' || last == '\\')) { + last = str[a]; + a++; + } + continue; + break; + } + + last = str[a]; + + if( depth == 0 ) { + return a; + } + } + + return -1; +} + +QString tagType( const Tag& tag ) +{ + if ( tag.hasAttribute( "t" ) ) + { + QString type = tag.attribute( "t" ).toString(); + return type; + } + else if ( tag.kind() == Tag::Kind_Class || tag.kind() == Tag::Kind_Namespace ) + { + QStringList l = tag.scope(); + l << tag.name(); + return l.join("::"); + } + return QString(); +} + +int findCommaOrEnd( const QString& str , int pos, QChar validEnd) { + + for( int a = pos; a < (int)str.length(); a++) { + switch(str[a]) { + case '"': + case '(': + case '[': + case '{': + case '<': + a = findClose( str, a ); + if( a == -1 ) return str.length(); + break; + case ')': + case ']': + case '}': + case '>': + if( validEnd != ' ' && validEnd != str[a] ) + continue; + case ',': + return a; + } + } + + return str.length(); +} + +int countExtract( QChar c, const QString& str ) { + int ret = 0; + for( int a = 0; a < (int)str.length(); a++) { + if( str[a] == c ) ++ret; + switch( str[a] ) { + case '"': + case '(': + case '[': + case '{': + case '<': + a = findClose( str, a ); + if( a == -1 ) + return ret; + } + } + return ret; +} + +QString templateParamFromString( int num, QString str ) { + if( str.endsWith("::") ) str.truncate( str.length() - 2 ); + int begin = str.find('<'); + int end = str.findRev('>'); + + if(begin == -1 || end == -1) return ""; + + begin++; + + for(int a = 0; a < num; a++) { + begin = findCommaOrEnd( str, begin ); + if( begin == (int)str.length() ) return ""; + begin++; + } + end = findCommaOrEnd( str, begin ); + + if( end == (int)str.length() ) return ""; + + return str.mid( begin, end - begin ).stripWhiteSpace(); +} + +QStringList splitType( QString str ) { + QStringList ret; + int currentStart = 0; + bool was = false; + for( int a = 0; a < (int)str.length(); ++a ) { + if( isLeftParen( str[a] ) ) { + a = findClose( str, a ); + if( a == -1 ) { + CompletionDebug::dbg() << "misformatted type: " << str << endl; + return ret; + } + was = false; + } else { + if( str[a] == ':' ) { + if( was ) { + if( currentStart < a - 1 ) + ret << str.mid( currentStart, (a - 1) - currentStart ).stripWhiteSpace(); + currentStart = a + 1; + } + was = true; + } else { + was = false; + } + } + } + if( currentStart < (int)str.length() ) + ret << str.mid( currentStart, str.length() - currentStart ).stripWhiteSpace(); + return ret; +} + +QString stringMult( int count, QString str ){ + QString ret; + for( int a = 0; a < count; a++ ) ret += str; + return ret; +} + +} + + +// kate: indent-mode csands; tab-width 4; |