%x com IN_STR EXCEED_STR

%option noyywrap

%{

#include "symbol.h"

%}

macro ("#"[^\n]+)

ws [\t\r\a ]

l [_a-zA-Z]

letter [a-zA-Z]

d [0-9]

hexd [0-9a-f]

octd [0-7]

bind [01]

id {l}({l}|{d})*

illegal_id {d}{l}+

punc [(){}[\]<>"';:.,#+\-*/|^&!%=?~]

"\n" { yywc.lc++;yywc.bc+=strlen(yytext); }

{ws}+ { yywc.bc+=strlen(yytext); }

<INITIAL>"/*" { BEGIN com;yywc.bc+=strlen(yytext); }

<com>"*/" { BEGIN 0; yywc.comment++;yywc.bc+=strlen(yytext); }

<com>\n { yywc.lc++; yywc.bc+=strlen(yytext); }

<com>. { yywc.bc+=strlen(yytext); }

{single_comment} { yywc.comment++;yywc.bc+=strlen(yytext); }

{macro} { printf("macro\n");yywc.bc+=strlen(yytext); }

"if" { return T_IF; }

"else" { return T_ELSE; }

"while" { return T_WHILE; }

"for" { return T_FOR; }

"switch" { return T_SWITCH; }

"case" { return T_CASE; }

"goto" { return T_GOTO; }

"break" { return T_BREAK; }

"continue" { return T_CONTINUE; }

"do" { return T_DO; }

"return" { return T_RETURN; }

"default" { return T_DEFAULT; }

"typedef" { return T_TYPEDEF; }

"int" { return T_INT; }

"long" { return T_LONG; }

"short" { return T_SHORT; }

"float" { return T_FLOAT; }

"double" { return T_DOUBLE; }

"char" { return T_CHAR; }

"unsigned" { return T_UNSIGNED; }

"signed" { return T_SIGNED; }

"const" { return T_CONST; }

"void" { return T_VOID; }

"volatile" { return T_VOLATILE; }

"enum" { return T_ENUM; }

"struct" { return T_STRUCT; }

"union" { return T_UNION; }

"register" { return T_REGISTER; }

"extern" { return T_EXTERN; }

"static" { return T_STATIC; }

"sizeof" { return T_SIZEOF; }

">=" { return T_RELOP_GE; }

"<=" { return T_RELOP_LE; }

"==" { return T_RELOP_EQ; }

"!=" { return T_RELOP_NEQ; }

"->" { return T_ARROW; }

"||" { return T_BOOLOP_OR; }

"&&" { return T_BOOLOP_AND; }

">>" { return T_CALOP_RSHIFT; }

"<<" { return T_CALOP_LSHIFT; }

"++" { return T_CALOP_INC; }

"--" { return T_CALOP_DEC; }

"+=" { return T_PLUSEQUAL; }

"-=" { return T_MINUSEQUAL; }

"*=" { return T_MULEQUAL; }

"/=" { return T_DIVEQUAL; }

"%=" { return T_MODEQUAL; }

"&=" { return T_ANDEQUAL; }

"|=" { return T_OREQUAL; }

"^=" { return T_XOREQUAL; }

">>=" { return T_RSEQUAL; }

"<<=" { return T_LSEQUAL; }

{float} { return T_NUM_FLOAT; }

{hex} { return T_NUM_HEX; }

{bin} { return T_NUM_BIN; }

{oct} { return T_NUM_OCT; }

{num} { return T_NUM; }

{illegal_id} { return 0; }

/*{string_literal} { yywc.literal++; return T_LITERAL; }*/

<INITIAL>\" { BEGIN IN_STR; yystrinit(); yyappend(yytext); }

<IN_STR>{string_wrap} { yywc.lc++; if(yyappend(yytext) != 0) BEGIN EXCEED_STR; }

<IN_STR>\n { yywc.lc++; yywc.bc++; BEGIN 0; return T_NULL; }

<IN_STR>{string_nowrap} { if(yyappend(yytext) != 0) BEGIN EXCEED_STR; }

<IN_STR>\" { BEGIN 0; yyappend(yytext); return T_LITERAL; }

<EXCEED_STR>{string_wrap} { yywc.bc+=strlen(yytext); yywc.lc++; }

<EXCEED_STR>{string_nowrap} { yywc.bc+=strlen(yytext); }

<EXCEED_STR>\n { yywc.lc++; BEGIN 0; return T_NULL; }

<EXCEED_STR>\" { BEGIN 0; yywc.bc+=strlen(yytext); return T_NULL; }

{char_literal} { return T_NUM; }

{id} { return T_ID; }

{punc} { return yytext[0]; }

. { return 0; }