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monq_gram.y
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monq_gram.y
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%{
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "monq.h"
MQuery *RET;
typedef struct yy_buffer_state *YY_BUFFER_STATE;
extern int yylex();
extern void yyerror(char *s);
extern int yyparse();
extern YY_BUFFER_STATE yy_scan_string(char * str);
extern void yy_delete_buffer(YY_BUFFER_STATE buffer);
void
yyerror(char *s)
{
elog(ERROR,"%s",s);
exit(0);
}
MQuery*
parsemquery(char *str)
{
YY_BUFFER_STATE buffer = yy_scan_string(str);
yyparse();
yy_delete_buffer(buffer);
return RET;
}
%}
/* Types of query tree nodes and leafs */
%union
{
MQuery *mquery;
Expression *exp;
Clause *cl;
MValue *vl;
LeafValue *lv;
List *list;
WhereClauseValue *wcv;
char *strval;
int intval;
double dubval;
MArray *arrval;
bool boolval;
ArrayOperatorType aop_type;
ExpressionOperatorType exop_type;
ValueOperatorType valop_type;
OperatorObject *oob;
Operator *op;
ElemMatchOperator *elemMatchOp;
}
%type<mquery> QUERY
%type<exp> EXPRESSION
%type<cl> CLAUSE TEXT_CLAUSE EXPRESSION_TREE_CLAUSE LEAF_CLAUSE COMMENT_CLAUSE WHERE_CLAUSE
%type<vl> VALUE
%type<strval> KEY KEY_STRING
%type<op> OPERATOR
%type<oob> OPEARATOR_OBJECT
%type<strval> LSCOPE RSCOPE COMMA
%type<list> OPERATOR_LIST LEAF_VALUE_LIST EXPRESSION_LIST CLAUSE_LIST
%type<wcv> WHERE_CLAUSE_VALUE
%type<strval> WHERE_OPERATOR
%token WHERE_OPERATOR
/* OPERATORS */
/* Tree clause */
%type<exop_type> TREE_OPERATOR OR NOR AND
%token OR NOR AND
/* Leaf value operator */
%type<valop_type> EQ LESS GREAT LESSEQ GREATEQ NOTEQ TYPE SIZE EXISTS NOT VALUE_OPERATOR
%token EQ NOTEQ LESS LESSEQ GREAT GREATEQ TYPE SIZE EXISTS NOT
/* Array operator */
%type<aop_type> IN NIN ALL ARRAY_OPERATOR
%token IN NIN ALL
/* Mod operator */
%type<strval> MOD_OPERATOR
%type<lv> DIVISOR REMAINDER
%token MOD_OPERATOR
/* ElemMatch operator */
%type<op> ELEMMATCH_OPERATOR
%type<strval> ELEMMATCH
%token ELEMMATCH
/* Comment clause */
%type<strval> COMMENT_OPERATOR
%token COMMENT_OPERATOR
/* Text clause */
%type<strval> DIACRITIC_SENSITIVE_OPERATOR CASE_SENSITIVE_OPERATOR LANGUAGE_OPERATOR SEARCH_OPERATOR TEXT_OPERATOR
%token DIACRITIC_SENSITIVE_OPERATOR CASE_SENSITIVE_OPERATOR LANGUAGE_OPERATOR SEARCH_OPERATOR TEXT_OPERATOR
/* Type of values */
%type<lv> LEAF_VALUE
%type<strval> INT
%type<strval> STRING
%type<strval> DOUBLE
%type<arrval> ARRAY
%type<boolval> BOOLEAN
%token INT STRING DOUBLE BOOLEAN KEY_STRING
/* Scope types */
%token LSCOPE RSCOPE COMMA LSQBRACKET RSQBRACKET LRBRACKET RRBRACKET
%start QUERY
%%
QUERY : EXPRESSION {$$ = createQuery($1); RET=$$; }
;
EXPRESSION : LSCOPE CLAUSE_LIST RSCOPE { $$ = createExpression($2); }
;
CLAUSE_LIST : CLAUSE COMMA CLAUSE_LIST { $$ = addClause($1, $3); }
| CLAUSE { $$ = lappend(NULL, $1); }
;
CLAUSE : LEAF_CLAUSE
| COMMENT_CLAUSE
| WHERE_CLAUSE
| EXPRESSION_TREE_CLAUSE
| TEXT_CLAUSE
;
/* TEXT CLAUSE SECTION */
TEXT_CLAUSE : LSCOPE TEXT_OPERATOR EQ LSCOPE SEARCH_OPERATOR EQ KEY
RSCOPE RSCOPE { $$ = createTextClause($7, false, "", false, false); }
| LSCOPE TEXT_OPERATOR EQ LSCOPE SEARCH_OPERATOR EQ KEY COMMA
LANGUAGE_OPERATOR EQ STRING COMMA
CASE_SENSITIVE_OPERATOR EQ BOOLEAN COMMA
DIACRITIC_SENSITIVE_OPERATOR EQ BOOLEAN RSCOPE RSCOPE { $$ = createTextClause($7, false, $11, $15, $19); }
;
/* END OF SECTION */
/*WHERE CLAUSE SECTION*/
WHERE_CLAUSE : LSCOPE WHERE_OPERATOR EQ WHERE_CLAUSE_VALUE RSCOPE { $$ = createWhereClause($4); }
;
WHERE_CLAUSE_VALUE : KEY { $$ = stringToWhereClauseValue($1); }
;
/* END OF SECTION */
/*COMMENT CLAUSE SECTION*/
COMMENT_CLAUSE : LSCOPE COMMENT_OPERATOR EQ STRING RSCOPE { $$ = createCommentClause($2, $4); }
;
/* END OF SECTION */
/*TREE CLAUSE SECTION*/
EXPRESSION_TREE_CLAUSE : TREE_OPERATOR EQ LSQBRACKET EXPRESSION_LIST RSQBRACKET { $$ = createExpressionTreeClause($1, $4); }
| LSCOPE EXPRESSION_TREE_CLAUSE RSCOPE { $$ = $2; }
;
EXPRESSION_LIST : EXPRESSION { $$ = lcons($1, NULL); }
| EXPRESSION COMMA EXPRESSION_LIST { $$ = addExpression($1, $3); }
;
TREE_OPERATOR : OR | AND | NOR ;
/* END OF SECTION */
/* LEAF CLAUSE SECTION */
LEAF_CLAUSE : KEY EQ VALUE { $$ = createLeafClause($1, $3); }
;
KEY : STRING
| KEY_STRING
;
VALUE : LEAF_VALUE { $$ = createLeafValueValue($1); }
| OPEARATOR_OBJECT { $$ = createOperatorObjectValue($1); }
;
OPEARATOR_OBJECT : LSCOPE OPERATOR_LIST RSCOPE { $$ = createOperatorObject($2); }
;
OPERATOR_LIST : OPERATOR { $$ = lappend(NULL, $1); }
| OPERATOR COMMA OPERATOR_LIST { $$ = addOperator($1, $3); }
;
OPERATOR : VALUE_OPERATOR EQ LEAF_VALUE { $$ = createValueOperator($1, $3); }
| ARRAY_OPERATOR EQ ARRAY { $$ = createArrayOperator($1, $3); }
| MOD_OPERATOR EQ LSQBRACKET DIVISOR COMMA REMAINDER RSQBRACKET { $$ = createModOperator($4, $6); }
| NOT EQ LSCOPE OPERATOR RSCOPE { $$ = createNotOperator($4); }
| ELEMMATCH EQ ELEMMATCH_OPERATOR { $$ = $3; }
;
VALUE_OPERATOR : EQ | NOTEQ | LESS | LESSEQ | GREAT | GREATEQ | TYPE | SIZE | EXISTS
;
ELEMMATCH_OPERATOR : OPEARATOR_OBJECT { $$ = createElemMatchOperatorOpObject($1); }
| EXPRESSION { $$ = createElemMatchOperatorExpression($1); }
;
DIVISOR : LEAF_VALUE
;
REMAINDER : LEAF_VALUE
;
ARRAY : LSQBRACKET LEAF_VALUE_LIST RSQBRACKET {$$ = createNewArray($2); }
;
ARRAY_OPERATOR : IN | NIN | ALL
;
LEAF_VALUE_LIST : LEAF_VALUE { $$ = lcons($1, NULL); }
| LEAF_VALUE COMMA LEAF_VALUE_LIST { $$ = addArrayElement($1, $3); }
;
LEAF_VALUE : INT { $$ = createIntegerValue($1); }
| STRING { $$ = createStringValue($1); }
| KEY_STRING {
StringInfoData strf;
initStringInfo(&strf);
appendStringInfo(&strf, "\"%s\"", $1);
$$ = createStringValue(strf.data);
}
| DOUBLE { $$ = createDoubleValue($1); }
| ARRAY { $$ = createArrayValue($1); }
| BOOLEAN { $$ = createBooleanValue($1); }
;
/* END OF SECTION */
%%
/*
StringInfoData strf;
initStringInfo(&strf);
appendStringInfo(&strf, "\"%s\"", $1);
$$ = strf.data;
*/