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%option noyywrap
%{
#include "c_lexer.hpp"
#include <sstream>
#include <stdlib.h>
int lineCount = 1;
int spaceCount = 1;
int sourceLineCount = 1;
std::string fileName;
%}
KEYWORD auto|double|int|struct|break|else|long|switch|case|enum|register|typedef|char|extern|return|union|const|float|short|unsigned|continue|for|signed|void|default|goto|sizeof|volatile|do|if|static|while
IDENTIFIER [_a-zA-Z][_a-zA-Z0-9]*
OPERATOR [.][.][.]|[<>][<>][=]|[-][-]|[+][+]|[|][|]|[#][#]|[&][&]|[+\-*\/<>=!%^|&][=]|[<][<]|[->][>]|[<>&=+\/\-*(){}\[\]\.,%~!?:|^;]
FRACTIONALCONSTANT (([0-9]*\.[0-9]+)|([0-9]+\.))
EXPONENTPART ([eE][+-]?[0-9]+)
FLOATINGSUFFIX ([flFL])
INTEGERSUFFIX ([uU][lL]|[lL][uU]|[uUlL])
DECIMALCONSTANT ([1-9][0-9]*)
OCTALCONSTANT ([0][0-7]*)
HEXCONSTANT ([0][xX][0-9A-Fa-f]+)
CHARCONSTANT ('(([\\]['])|([^']))+')
STRINGLITERAL ["](([\\]["])|([^"]))*["]
NEWLINE (\r\n?|\n)
WHITESPACE [ ]
TAB \t
PREPROC [#][ ][0-9]+[ ]{STRINGLITERAL}[ 0-9]*
ALL .
%%
{KEYWORD} {
yylval = new std::string(yytext);
return Keyword;
}
{IDENTIFIER} {
yylval = new std::string(yytext);
return Identifier;
}
{OPERATOR} {
yylval = new std::string(yytext);
return Operator;
}
{FRACTIONALCONSTANT}{EXPONENTPART}?{FLOATINGSUFFIX}? {
yylval = new std::string(yytext);
return Constant;
}
([0-9]+){EXPONENTPART}{FLOATINGSUFFIX}? {
yylval = new std::string(yytext);
return Constant;
}
{HEXCONSTANT}{INTEGERSUFFIX}? {
yylval = new std::string(yytext);
return Constant;
}
{DECIMALCONSTANT}{INTEGERSUFFIX}? {
yylval = new std::string(yytext);
return Constant;
}
{OCTALCONSTANT}{INTEGERSUFFIX}? {
yylval = new std::string(yytext);
return Constant;
}
{CHARCONSTANT} {
std::string tmp(yytext);
yylval = new std::string(tmp.substr(1, tmp.length()-2));
return Constant;
}
{STRINGLITERAL} {
std::string tmp(yytext);
yylval = new std::string(tmp.substr(1, tmp.length()-2));
return StringLiteral;
}
{NEWLINE} {
spaceCount = 1;
lineCount++;
sourceLineCount++;
}
{WHITESPACE} {
spaceCount++;
}
{PREPROC} {
int srcLineInt;
yylval = new std::string(yytext);
std::stringstream preProcLine((*yylval).substr(1, (*yylval).length()));
preProcLine >> srcLineInt >> fileName;
sourceLineCount = srcLineInt - 1;
fileName = fileName.substr(1, fileName.length() - 2);
}
{TAB} {
spaceCount += 8;
}
{ALL} {
yylval = new std::string(yytext);
return Invalid;
}
%%
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