#if USE_WINDOWS

#pragma warning(push,1)

#pragma warning(disable:4702) // unreachable code

#endif

%lex-param { SelectParser_t * pParser }

%parse-param { SelectParser_t * pParser }

%token SEL_TOKEN

%token SEL_AS

%token SEL_AVG

%token SEL_MAX

%token SEL_MIN

%token SEL_SUM

%token TOK_NEG

%token TOK_LTE

%token TOK_GTE

%token TOK_EQ

%token TOK_NE

%left TOK_AND TOK_OR

%left TOK_EQ TOK_NE

%left '<' '>' TOK_LTE TOK_GTE

%left '+' '-'

%left '*' '/'

%nonassoc TOK_NEG

%nonassoc TOK_NOT

select_list:

select_item

| select_list ',' select_item

;

select_item:

expr { pParser->AddItem ( &$1, NULL ); }

| expr SEL_AS SEL_TOKEN { pParser->AddItem ( &$1, &$3 ); }

| '*' { pParser->AddItem ( &$1, NULL ); }

| SEL_AVG '(' expr ')' SEL_AS SEL_TOKEN { pParser->AddItem ( &$3, &$6, SPH_AGGR_AVG ); }

| SEL_MAX '(' expr ')' SEL_AS SEL_TOKEN { pParser->AddItem ( &$3, &$6, SPH_AGGR_MAX ); }

| SEL_MIN '(' expr ')' SEL_AS SEL_TOKEN { pParser->AddItem ( &$3, &$6, SPH_AGGR_MIN ); }

| SEL_SUM '(' expr ')' SEL_AS SEL_TOKEN { pParser->AddItem ( &$3, &$6, SPH_AGGR_SUM ); }

;

expr:

SEL_TOKEN

| '-' expr %prec TOK_NEG { $$ = $1; $$.m_iEnd = $2.m_iEnd; }

| TOK_NOT expr { $$ = $1; $$.m_iEnd = $2.m_iEnd; }

| expr '+' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr '-' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr '*' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr '/' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr '<' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr '>' expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_LTE expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_GTE expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_EQ expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_NE expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_AND expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| expr TOK_OR expr { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| '(' expr ')' { $$ = $1; $$.m_iEnd = $3.m_iEnd; }

| function

;

function:

SEL_TOKEN '(' arglist ')' { $$ = $1; $$.m_iEnd = $4.m_iEnd; }

| SEL_TOKEN '(' ')' { $$ = $1; $$.m_iEnd = $3.m_iEnd }

| SEL_MIN '(' expr ',' expr ')' { $$ = $1; $$.m_iEnd = $6.m_iEnd } // handle clash with aggregate functions

| SEL_MAX '(' expr ',' expr ')' { $$ = $1; $$.m_iEnd = $6.m_iEnd }

;

arglist:

expr

| arglist ',' expr

;

#if USE_WINDOWS

#pragma warning(pop)

#endif