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%{
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <string.h>
#include "sql_parser.h"
#include "sql_tree.h"
#include "mem.h"
int sqlerror (char *);
int sqllex ();
extern sql_statement *sql_result;
%}
%union{
void *v;
char *str;
int i;
GList *list;
sql_field *f;
sql_field_item *fi;
sql_table *t;
sql_condition *c;
sql_where *w;
param_spec *ps;
sql_order_field *of;
}
%token L_SELECT L_FROM L_WHERE L_AS L_ON L_ORDER L_BY L_ORDER_ASC L_ORDER_DSC
%token L_DISTINCT L_BETWEEN L_IN L_GROUP L_INSERT L_INTO L_VALUES L_UPDATE L_SET
%token L_DOT L_COMMA L_NULL L_LBRACKET L_RBRACKET
%token L_IDENT
%token L_EQ L_IS L_LIKE L_GT L_LT L_GEQ L_LEQ L_DIFF
%token L_NOT L_AND L_OR
%token L_MINUS L_PLUS L_TIMES L_DIV
%token L_STRING L_TEXTUAL
%token L_DELETE
%token L_JOIN L_INNER L_LEFT L_RIGHT L_FULL L_OUTER
%token L_LSBRACKET L_RSBRACKET
%token L_PNAME L_PTYPE L_PISPARAM L_PDESCR L_PNULLOK
%type <v> select_statement insert_statement update_statement delete_statement
%type <str> L_IDENT L_STRING L_TEXTUAL
%type <list> fields_list tables_list field_name dotted_name opt_orderby opt_groupby opt_fields_list set_list param_spec param_spec_list order_fields_list
%type <f> field
%type <fi> field_raw
%type <t> table
%type <i> condition_operator field_op opt_distinct join_type
%type <w> where_list opt_where
%type <c> where_item set_item
%type <ps> param_spec_item
%type <of> order_field
%left L_OR
%left L_AND
%right L_NOT
%left L_PLUS L_MINUS
%left L_TIMES L_DIV
%%
statement: select_statement {sql_result = sql_statement_build (SQL_select, $1);}
| insert_statement {sql_result = sql_statement_build (SQL_insert, $1);}
| update_statement {sql_result = sql_statement_build (SQL_update, $1);}
| delete_statement {sql_result = sql_statement_build (SQL_delete, $1);}
;
select_statement: L_SELECT opt_distinct fields_list L_FROM tables_list opt_where opt_orderby opt_groupby
{$$ = sql_select_statement_build ($2, $3, $5, $6, $7, $8);}
| L_SELECT opt_distinct fields_list opt_where opt_orderby opt_groupby
{$$ = sql_select_statement_build ($2, $3, NULL, $4, $5, $6);}
;
insert_statement: L_INSERT L_INTO table opt_fields_list L_VALUES L_LBRACKET fields_list L_RBRACKET
{$$ = sql_insert_statement_build ($3, $4, $7);}
;
update_statement: L_UPDATE table L_SET set_list opt_where
{$$ = sql_update_statement_build ($2, $4, $5);}
;
delete_statement: L_DELETE L_FROM table opt_where
{$$ = sql_delete_statement_build ($3, $4);}
;
set_list: set_item {$$ = g_list_append (NULL, $1);}
| set_item L_COMMA set_list {$$ = g_list_prepend ($3, $1);}
;
opt_fields_list: L_LBRACKET fields_list L_RBRACKET {$$ = $2;}
| {$$ = NULL;}
;
opt_distinct: L_DISTINCT {$$ = 1;}
| {$$ = 0;}
;
opt_where: L_WHERE where_list {$$ = $2;}
| {$$ = NULL;}
;
opt_orderby: L_ORDER L_BY order_fields_list {$$ = $3;}
| {$$ = NULL;}
;
order_fields_list: order_field {$$ = g_list_append (NULL, $1);}
| order_field L_COMMA order_fields_list {$$ = g_list_prepend ($3, $1);}
;
order_field: field_name {$$ = sql_order_field_build ($1, SQL_asc);}
| field_name L_ORDER_ASC {$$ = sql_order_field_build ($1, SQL_asc);}
| field_name L_ORDER_DSC {$$ = sql_order_field_build ($1, SQL_desc);}
;
opt_groupby: L_GROUP L_BY fields_list {$$ = $3;}
| {$$ = NULL;}
;
fields_list: field {$$ = g_list_append (NULL, $1);}
| field L_COMMA fields_list {$$ = g_list_prepend ($3, $1);}
;
join_type: L_LEFT L_JOIN {$$ = SQL_left_join;}
| L_LEFT L_OUTER L_JOIN {$$ = SQL_left_join;}
| L_RIGHT L_JOIN {$$ = SQL_right_join;}
| L_RIGHT L_OUTER L_JOIN {$$ = SQL_right_join;}
| L_FULL L_JOIN {$$ = SQL_full_join;}
| L_FULL L_OUTER L_JOIN {$$ = SQL_full_join;}
| L_INNER L_JOIN {$$ = SQL_inner_join;}
| L_JOIN {$$ = SQL_inner_join;}
;
tables_list: table {$$ = g_list_append (NULL, $1);}
| tables_list L_COMMA table {$$ = g_list_append ($1, $3);}
| tables_list join_type table {$$ = g_list_append ($1, sql_table_set_join ($3, $2, NULL));}
| tables_list join_type table L_ON where_list {$$ = g_list_append ($1, sql_table_set_join ($3, $2, $5));}
;
table: L_IDENT {$$ = sql_table_build ($1); memsql_free ($1);}
| table L_AS L_IDENT {$$ = sql_table_set_as ($1, $3);}
| table L_IDENT {$$ = sql_table_set_as ($1, $2);}
| select_statement {$$ = sql_table_build_select ($1);}
| L_LBRACKET table L_RBRACKET {$$ = $2;}
;
field: field_raw {$$ = sql_field_build ($1);}
| field_raw L_AS L_IDENT {$$ = sql_field_set_as (sql_field_build ($1), $3);}
| field_raw L_AS L_TEXTUAL {$$ = sql_field_set_as (sql_field_build ($1), $3);}
| field_raw param_spec {$$ = sql_field_set_param_spec (sql_field_build ($1), $2);}
| field_raw param_spec L_AS L_IDENT {$$ = sql_field_set_as (sql_field_set_param_spec (sql_field_build ($1), $2), $4);}
;
dotted_name: L_IDENT {$$ = g_list_append (NULL, memsql_strdup ($1)); memsql_free ($1);}
| L_IDENT L_DOT dotted_name {$$ = g_list_prepend ($3, memsql_strdup ($1)); memsql_free ($1);}
| L_IDENT L_DOT L_TIMES {$$ = g_list_append (NULL, memsql_strdup ($1)); memsql_free ($1);
$$ = g_list_append ($$, memsql_strdup ("*"));}
;
field_name: dotted_name {$$ = $1;}
| L_TIMES {$$ = g_list_append (NULL, memsql_strdup ("*"));}
| L_NULL {$$ = g_list_append (NULL, memsql_strdup ("null"));}
| L_STRING {$$ = g_list_append (NULL, $1);}
;
field_op: L_MINUS {$$ = SQL_minus;}
| L_PLUS {$$ = SQL_plus;}
| L_TIMES {$$ = SQL_times;}
| L_DIV {$$ = SQL_div;}
;
field_raw: field_name {$$ = sql_field_item_build ($1);}
| field_raw field_op field_raw {$$ = sql_field_item_build_equation ($1, $3, $2);}
| select_statement {$$ = sql_field_item_build_select ($1);}
| L_LBRACKET field_raw L_RBRACKET {$$ = $2;}
| L_IDENT L_LBRACKET fields_list L_RBRACKET {$$ = sql_field_build_function($1, $3); }
| L_IDENT L_LBRACKET L_RBRACKET {$$ = sql_field_build_function($1, NULL); }
;
where_list: where_item {$$ = sql_where_build_single ($1);}
| L_NOT where_list {$$ = sql_where_build_negated ($2);}
| where_list L_OR where_list {$$ = sql_where_build_pair ($1, $3, SQL_or);}
| where_list L_AND where_list {$$ = sql_where_build_pair ($1, $3, SQL_and);}
| L_LBRACKET where_list L_RBRACKET {$$ = $2;}
;
set_item: field L_EQ field {$$ = sql_build_condition ($1, $3, SQL_eq);}
;
condition_operator: L_EQ {$$ = SQL_eq;}
| L_IS {$$ = SQL_is;}
| L_IS L_NOT {$$ = SQL_isnot;}
| L_IN {$$ = SQL_in;}
| L_NOT L_IN {$$ = SQL_notin;}
| L_LIKE {$$ = SQL_like;}
| L_GT {$$ = SQL_gt;}
| L_LT {$$ = SQL_lt;}
| L_GEQ {$$ = SQL_geq;}
| L_LEQ {$$ = SQL_leq;}
| L_DIFF {$$ = SQL_diff;}
;
where_item: field condition_operator field {$$ = sql_build_condition ($1, $3, $2);}
| field L_BETWEEN field L_AND field {$$ = sql_build_condition_between ($1, $3, $5);}
;
param_spec: L_LSBRACKET param_spec_list L_RSBRACKET {$$ = $2;}
;
param_spec_list: param_spec_item {$$ = g_list_append (NULL, $1);}
| param_spec_item param_spec_list {$$ = g_list_prepend ($2, $1);}
;
param_spec_item: L_PNAME L_EQ L_TEXTUAL {$$ = param_spec_build (PARAM_name, $3);}
| L_PDESCR L_EQ L_TEXTUAL {$$ = param_spec_build (PARAM_descr, $3);}
| L_PTYPE L_EQ L_TEXTUAL {$$ = param_spec_build (PARAM_type, $3);}
| L_PISPARAM L_EQ L_TEXTUAL {$$ = param_spec_build (PARAM_isparam, $3);}
| L_PNULLOK L_EQ L_TEXTUAL {$$ = param_spec_build (PARAM_nullok, $3);}
;
%%
|
