source/namespacescanner.cc

   1 /* This file is part of Shapes.
   2  *
   3  * Shapes is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * any later version.
   7  *
   8  * Shapes is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with Shapes.  If not, see <http://www.gnu.org/licenses/>.
  15  *
  16  * Copyright 2015 Henrik Tidefelt
  17  */
  18
  19 #include "namespacescanner.h"
  20
  21 using namespace Shapes;
  22
  23
  24 NamespaceScanner::NamespaceScanner( Shapes::Ast::NamespaceDeclarations * declarations, std::istream * yyin, const Shapes::Ast::FileID * fileID )
  25 : yyFlexLexer( yyin, 0 ), moreState_( false ), lastleng_( 0 ),
  26   declarations_( declarations )
  27 {
  28   namespacelloc = Ast::SourceLocation( fileID );
  29 }
  30
  31
  32 void
  33 NamespaceScanner::more( )
  34 {
  35   moreState_ = true; /* This one is for ourselves to use in doBeforeEachAction. */
  36   yy_more_flag = 1; /* This one is for flex, and will be reset before we reach doBeforeEachAction. */
  37   lastleng_ = yyleng;
  38 }
  39
  40
  41 void
  42 NamespaceScanner::doBeforeEachAction( )
  43 {
  44   if( moreState_ ){
  45     namespacelloc.lastColumn += yyleng - lastleng_;
  46   }else{
  47     namespacelloc.firstLine = namespacelloc.lastLine;
  48     namespacelloc.firstColumn = namespacelloc.lastColumn;
  49     namespacelloc.lastColumn = namespacelloc.firstColumn + yyleng;
  50   }
  51   moreState_ = false;
  52 }
  53
  54
  55 void
  56 NamespaceScanner::endOfLine( )
  57 {
  58   namespacelloc.firstLine = namespacelloc.lastLine + 1;
  59   namespacelloc.lastLine = namespacelloc.firstLine;
  60   namespacelloc.lastColumn = 0;
  61 }
  62
  63
  64 std::string
  65 NamespaceScanner::rinseString( const char * str )
  66 {
  67   /* A string is always terminated by the one byte sequence in both ends: " */
  68   size_t bytecount = std::strlen(str) - 2;
  69   char * mem = new char[ bytecount + 1 ];
  70   memcpy( mem, str, bytecount );
  71   mem[ bytecount ] = '\0';
  72   std::string res(mem);
  73   delete mem;
  74   return res;
  75 }