lexer.l

%{
#include "parser.h"
%}

%option reentrant
%option noyywrap
%option noinput
%option nounput

%%

"null"                                         return NUL;
"true"                                         return TRUE;
"false"                                        return FALSE;

"{"                                            return LBRACE;
"}"                                            return RBRACE;
"["                                            return LBRACKET;
"]"                                            return RBRACKET;
","                                            return COMMA;
":"                                            return COLON;

\"([^"\\]|\\.)*\"                              return STRING;
-?(0|[1-9][0-9]*)(\.[0-9]+)?([eE][+-]?[0-9]+)? return NUMBER;

[ \t\n]+                                       ;

%%