Subversion Repositories theia_gpu

%{

/**********************************************************************************

Theia, Ray Cast Programable graphic Processing Unit.

Copyright (C) 2012  Diego Valverde (diego.valverde.g@gmail.com)

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.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

***********************************************************************************/

        #include "Scanner.h"

        // used to keep track of location

        #define YY_USER_ACTION yylloc->columns(yyleng);

        int LineNumber = 1;

%}

%option nodefault yyclass="Scanner" noyywrap c++

comment     "//"(.*)*\n

separator   ([ \t""])+

character   [a-zA-Z]

hexchar     [a-fA-F]

digit       [0-9]

decconstant    {digit}({digit})*

hexconstant 0x({digit}|{hexchar})+

binconstant 0b(1|0)+

registry    (r|R)({digit})+

identifier ([a-wA-Z])({character}|{digit})*

%%

%{

        yylloc->step();

%}

{comment}    {yylloc->lines(); ;LineNumber++; ;}

"\n"         {yylloc->lines(); ;LineNumber++;}

{separator}  {/* do nothing */}

{decconstant}   { *yylval = yytext; return Theia::Parser::token::DECCONST; }

{hexconstant}   { *yylval = yytext; return Theia::Parser::token::HEXCONST; }

{binconstant}   { *yylval = yytext; return Theia::Parser::token::BINCONST; }

"sqrt"                  {return Theia::Parser::token::SQRT;}

"if"            {return Theia::Parser::token::IF;}

"else"            {return Theia::Parser::token::ELSE;}

"function"   {return Theia::Parser::token::FUNCTION;}

"jmp"        {return Theia::Parser::token::JMP;}

"return"          {return Theia::Parser::token::RETURN;}

"exit"         {return Theia::Parser::token::EXIT;}

"vector"         {return Theia::Parser::token::AUTO;}

"("            {return Theia::Parser::token::OPEN_ROUND_BRACE;}

")"            {return Theia::Parser::token::CLOSE_ROUND_BRACE;}

"{"            {return Theia::Parser::token::OPEN_BRACE;}

"}"            {return Theia::Parser::token::CLOSE_BRACE;}

"-"          {*yylval = yytext;return Theia::Parser::token::MINUS;   }

"=="          {return Theia::Parser::token::EQUAL; }

"!="          {return Theia::Parser::token::NOT_EQUAL; }

"scale"           {return Theia::Parser::token::SCALE; }

"unscale"         {return Theia::Parser::token::UNSCALE; }

"using"           {return Theia::Parser::token::USING; }

"fixed_point_arithmetic" {return Theia::Parser::token::FIXED_POINT; }

"<="          {return Theia::Parser::token::LESS_OR_EQUAL_THAN; }

">="          {return Theia::Parser::token::GREATER_OR_EQUAL_THAN; }

"="          {return Theia::Parser::token::ASSIGN; }

">"          {return Theia::Parser::token::GREATER_THAN; }

"<"          {return Theia::Parser::token::LESS_THAN; }

"["                      {return Theia::Parser::token::OPEN_SQUARE_BRACE; }

"]"          {return Theia::Parser::token::CLOSE_SQUARE_BRACE; }

"*"           {return Theia::Parser::token::MUL;   }

"/"          {return Theia::Parser::token::DIV;   }

"+"          {return Theia::Parser::token::ADD;   }

";"          {return Theia::Parser::token::EOS;   }

","          {return Theia::Parser::token::COMMA;   }

"."          {return Theia::Parser::token::DOT;   }

x                {*yylval = yytext;return Theia::Parser::token::TK_X;  }

y            {*yylval = yytext;return Theia::Parser::token::TK_Y;  }

z            {*yylval = yytext;return Theia::Parser::token::TK_Z;  }

"n"              {*yylval = yytext;return Theia::Parser::token::TK_N;  }

{registry} { *yylval = yytext; return Theia::Parser::token::REG;}

{identifier} {*yylval = yytext; return Theia::Parser::token::IDENTIFIER;}

.                    {

                                std::ostringstream ret;

                                ret << "Unknown Indetifier at line " << LineNumber << " '" << yytext << "'\n";

                                throw ret.str();

                         };

%%