%{
#include <stdio.h>
#include <stdbool.h>
#include "test.tab.h"
%}

%option noyywrap
%option yylineno

DIGIT       [0-9]
LETTER      [a-zA-Z_]
HEX         [0-9a-fA-F]
OCT         [0-7]
BIN         [0-1]
QUOTE       ["']
%%
{QUOTE}{LETTER}*{QUOTE}  {return STRING;}
{LETTER}({LETTER}|{DIGIT})* { return IDENT;}
{DIGIT}+    { yylval.num = atoi(yytext); return NUMBER; }
"break"         { return BREAK; }
"switch"        { return SWITCH; }
"case"          { return CASE; }
"chan"          { return CHAN; }
"const"         { return CONST; }
"continue"      { return CONTINUE; }
"default"       { return DEFAULT; }
"defer"         { return DEFER; }
"else"          { return ELSE; }
"fallthrough"   { return FALLTHROUGH; }
"for"           { return FOR; }
"func"          { return FUNC; }
"go"            { return GO; }
"goto"          { return GOTO; }
"if"            { return IF; }
"import"        { return IMPORT; }
"interface"     { return INTERFACE; }
"map"           { return MAP; }
"package"       { return PACKAGE; }
"range"         { return RANGE; }
"return"        { return RETURN; }
"select"        { return SELECT; }
"struct"        { return STRUCT; }
"type"          { return TYPE; }
"var"           { return VAR; }

"uint8"       { return UINT8; }
"uint16"      { return UINT16; }
"uint32"      { return UINT32; }
"uint64"      { return UINT64; }

"int8"        { return INT8; }
"int16"       { return INT16; }
"int32"       { return INT32; }
"int64"       { return INT64; }

"float32"     { return FLOAT32; }
"float64"     { return FLOAT64; }

"complex64"   { return COMPLEX64; }
"complex128"  { return COMPLEX128; }

"byte"        { return BYTE; }
"rune"        { return RUNE; }
"uint"        { return UINT; }
"int"         { return INT; }
"uintptr"     { return UINT_PTR; }
"string"      { return STRING_LIT;}

"true"          { yylval.bool_val = true; return BOOL_LIT; }
"false"         { yylval.bool_val = false; return BOOL_LIT; }
"nil"           { return NIL; }

"+"             { return PLUS; }
"-"             { return MINUS; }
"*"             { return STAR; }
"/"             { return DIV; }
"%"             { return MOD; }
"&"             { return AMPERSAND; }
"|"             { return PIPE; }
"^"             { return XOR; }
"<<"            { return LSHIFT; }
">>"            { return RSHIFT; }
"&^"            { return AND_NOT; }

"+="            { return PLUS_EQ; }
"-="            { return MINUS_EQ; }
"*="            { return MUL_EQ; }
"/="            { return DIV_EQ; }
"%="            { return MOD_EQ; }
"&="            { return AMPERSAND_EQ; }
"|="            { return PIPE_EQ; }
"^="            { return XOR_EQ; }
"<<="           { return LSHIFT_EQ; }
">>="           { return RSHIFT_EQ; }
"&^="           { return AND_NOT_EQ; }

"++"            { return INC; }
"--"            { return DEC; }

"=="            { return EQ; }
"&&"            { return AND; }
"||"            { return OR; }
"!"             { return NOT; }
"!="            { return NEQ; }

"<-"            { return ARROW; }

"<"             { return LT; }
">"             { return GT; }
"="             { return ASSIGN; }
"<="            { return LEQ; }
">="            { return GEQ; }
":="            { return SHORT_ASSIGN; }
"..."           { return DOTS; }
":"             { return COLON; }
";"             { return SEMICOLON; }
","             { return COMMA; }
"."             { return DOT; }

"("             { return LPAREN; }
")"             { return RPAREN; }
"["             { return LBRACK; }
"]"             { return RBRACK; }
"{"             { return LBRACE; }
"}"             { return RBRACE; }

"//".*          { }
"/\*"(.|\n)*?"\*/" { }
[ \t\n\r]+      { }

.               { fprintf(stderr, "Unexpected symbol: %s\n", yytext); }
%%