composer/iTop
6
0
Fork 0
mirror of https://github.com/Combodo/iTop.git synced 2026-05-19 23:32:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Added a comment into the OQL grammar, about operators precedence and a ref to some helpful doc

Browse Source 
SVN:code[14]
This commit is contained in:
Romain Quetiez
2009-03-27 15:20:44 +00:00
parent f8d15a2281
commit 46a30773ea
2 changed files with 382 additions and 362 deletions
Download Patch File Download Diff File Expand all files Collapse all files

265
core/oql/oql-parser.php
View File

@@ -96,7 +96,7 @@ class OQLParser_yyStackEntry
// code external to the class is included here
// declare_class is output here
#line 2 "oql-parser.y"
#line 24 "oql-parser.y"
class OQLParserRaw#line 102 "oql-parser.php"
{
/* First off, code is included which follows the "include_class" declaration
@@ -1221,118 +1221,118 @@ static public $yy_action = array(
** function yy_r0($yymsp){ ... } // User supplied code
** #line <lineno> <thisfile>
*/
#line 7 "oql-parser.y"
#line 29 "oql-parser.y"
function yy_r0(){ $this->my_result = $this->yystack[$this->yyidx + 0]->minor; }
#line 1230 "oql-parser.php"
#line 10 "oql-parser.y"
function yy_r2(){
$this->_retvalue = new OqlQuery($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
#line 32 "oql-parser.y"
function yy_r2(){
$this->_retvalue = new OqlQuery($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
}
#line 1235 "oql-parser.php"
#line 13 "oql-parser.y"
function yy_r3(){
$this->_retvalue = new OqlQuery($this->yystack[$this->yyidx + -4]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
#line 35 "oql-parser.y"
function yy_r3(){
$this->_retvalue = new OqlQuery($this->yystack[$this->yyidx + -4]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
}
#line 1240 "oql-parser.php"
#line 17 "oql-parser.y"
#line 39 "oql-parser.y"
function yy_r4(){ $this->_retvalue = $this->yystack[$this->yyidx + 0]->minor; }
#line 1243 "oql-parser.php"
#line 18 "oql-parser.y"
#line 40 "oql-parser.y"
function yy_r5(){ $this->_retvalue = null; }
#line 1246 "oql-parser.php"
#line 20 "oql-parser.y"
function yy_r6(){
// insert the join statement on top of the existing list
array_unshift($this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
// and return the updated array
$this->_retvalue = $this->yystack[$this->yyidx + 0]->minor;
#line 42 "oql-parser.y"
function yy_r6(){
// insert the join statement on top of the existing list
array_unshift($this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -1]->minor);
// and return the updated array
$this->_retvalue = $this->yystack[$this->yyidx + 0]->minor;
}
#line 1254 "oql-parser.php"
#line 26 "oql-parser.y"
function yy_r7(){
$this->_retvalue = Array($this->yystack[$this->yyidx + 0]->minor);
#line 48 "oql-parser.y"
function yy_r7(){
$this->_retvalue = Array($this->yystack[$this->yyidx + 0]->minor);
}
#line 1259 "oql-parser.php"
#line 32 "oql-parser.y"
function yy_r9(){
// create an array with one single item
$this->_retvalue = new OqlJoinSpec($this->yystack[$this->yyidx + -4]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
#line 54 "oql-parser.y"
function yy_r9(){
// create an array with one single item
$this->_retvalue = new OqlJoinSpec($this->yystack[$this->yyidx + -4]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
}
#line 1265 "oql-parser.php"
#line 37 "oql-parser.y"
function yy_r10(){
// create an array with one single item
$this->_retvalue = new OqlJoinSpec($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
#line 59 "oql-parser.y"
function yy_r10(){
// create an array with one single item
$this->_retvalue = new OqlJoinSpec($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
}
#line 1271 "oql-parser.php"
#line 42 "oql-parser.y"
#line 64 "oql-parser.y"
function yy_r11(){ $this->_retvalue = new BinaryOqlExpression($this->yystack[$this->yyidx + -2]->minor, '=', $this->yystack[$this->yyidx + 0]->minor); }
#line 1274 "oql-parser.php"
#line 44 "oql-parser.y"
#line 66 "oql-parser.y"
function yy_r12(){ $this->_retvalue = $this->yystack[$this->yyidx + 0]->minor; }
#line 1277 "oql-parser.php"
#line 48 "oql-parser.y"
#line 70 "oql-parser.y"
function yy_r15(){ $this->_retvalue = new FunctionOqlExpression($this->yystack[$this->yyidx + -3]->minor, $this->yystack[$this->yyidx + -1]->minor); }
#line 1280 "oql-parser.php"
#line 49 "oql-parser.y"
#line 71 "oql-parser.y"
function yy_r16(){ $this->_retvalue = $this->yystack[$this->yyidx + -1]->minor; }
#line 1283 "oql-parser.php"
#line 50 "oql-parser.y"
#line 72 "oql-parser.y"
function yy_r17(){ $this->_retvalue = new BinaryOqlExpression($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + -1]->minor, $this->yystack[$this->yyidx + 0]->minor); }
#line 1286 "oql-parser.php"
#line 65 "oql-parser.y"
function yy_r26(){
$this->_retvalue = new ListOqlExpression($this->yystack[$this->yyidx + -1]->minor);
#line 87 "oql-parser.y"
function yy_r26(){
$this->_retvalue = new ListOqlExpression($this->yystack[$this->yyidx + -1]->minor);
}
#line 1291 "oql-parser.php"
#line 68 "oql-parser.y"
function yy_r27(){
$this->_retvalue = array($this->yystack[$this->yyidx + 0]->minor);
#line 90 "oql-parser.y"
function yy_r27(){
$this->_retvalue = array($this->yystack[$this->yyidx + 0]->minor);
}
#line 1296 "oql-parser.php"
#line 71 "oql-parser.y"
function yy_r28(){
array_push($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
$this->_retvalue = $this->yystack[$this->yyidx + -2]->minor;
#line 93 "oql-parser.y"
function yy_r28(){
array_push($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor);
$this->_retvalue = $this->yystack[$this->yyidx + -2]->minor;
}
#line 1302 "oql-parser.php"
#line 76 "oql-parser.y"
function yy_r29(){
$this->_retvalue = array();
#line 98 "oql-parser.y"
function yy_r29(){
$this->_retvalue = array();
}
#line 1307 "oql-parser.php"
#line 87 "oql-parser.y"
#line 109 "oql-parser.y"
function yy_r33(){ $this->_retvalue = new IntervalOqlExpression($this->yystack[$this->yyidx + -1]->minor, $this->yystack[$this->yyidx + 0]->minor); }
#line 1310 "oql-parser.php"
#line 96 "oql-parser.y"
#line 118 "oql-parser.y"
function yy_r39(){ $this->_retvalue = new ScalarOqlExpression($this->yystack[$this->yyidx + 0]->minor); }
#line 1313 "oql-parser.php"
#line 99 "oql-parser.y"
#line 121 "oql-parser.y"
function yy_r41(){ $this->_retvalue = new FieldOqlExpression($this->yystack[$this->yyidx + 0]->minor); }
#line 1316 "oql-parser.php"
#line 100 "oql-parser.y"
#line 122 "oql-parser.y"
function yy_r42(){ $this->_retvalue = new FieldOqlExpression($this->yystack[$this->yyidx + 0]->minor, $this->yystack[$this->yyidx + -2]->minor); }
#line 1319 "oql-parser.php"
#line 101 "oql-parser.y"
#line 123 "oql-parser.y"
function yy_r43(){ $this->_retvalue=$this->yystack[$this->yyidx + 0]->minor; }
#line 1322 "oql-parser.php"
#line 103 "oql-parser.y"
function yy_r44(){
if ($this->yystack[$this->yyidx + 0]->minor[0] == '`')
{
$name = substr($this->yystack[$this->yyidx + 0]->minor, 1, strlen($this->yystack[$this->yyidx + 0]->minor) - 2);
}
else
{
$name = $this->yystack[$this->yyidx + 0]->minor;
}
$this->_retvalue = new OqlName($name, $this->m_iColPrev);
#line 125 "oql-parser.y"
function yy_r44(){
if ($this->yystack[$this->yyidx + 0]->minor[0] == '`')
{
$name = substr($this->yystack[$this->yyidx + 0]->minor, 1, strlen($this->yystack[$this->yyidx + 0]->minor) - 2);
}
else
{
$name = $this->yystack[$this->yyidx + 0]->minor;
}
$this->_retvalue = new OqlName($name, $this->m_iColPrev);
}
#line 1335 "oql-parser.php"
#line 115 "oql-parser.y"
#line 137 "oql-parser.y"
function yy_r45(){$this->_retvalue=$this->yystack[$this->yyidx + 0]->minor; }
#line 1338 "oql-parser.php"
#line 116 "oql-parser.y"
#line 138 "oql-parser.y"
function yy_r46(){$this->_retvalue=stripslashes(substr($this->yystack[$this->yyidx + 0]->minor, 1, strlen($this->yystack[$this->yyidx + 0]->minor) - 2)); }
#line 1341 "oql-parser.php"
@@ -1446,9 +1446,9 @@ static public $yy_action = array(
*/
function yy_syntax_error($yymajor, $TOKEN)
{
#line 3 "oql-parser.y"
throw new OQLParserException($this->m_sSourceQuery, $this->m_iLine, $this->m_iCol, $this->tokenName($yymajor), $TOKEN);
#line 25 "oql-parser.y"
throw new OQLParserException($this->m_sSourceQuery, $this->m_iLine, $this->m_iCol, $this->tokenName($yymajor), $TOKEN);
#line 1457 "oql-parser.php"
}
@@ -1601,70 +1601,69 @@ throw new OQLParserException($this->m_sSourceQuery, $this->m_iLine, $this->m_iCo
}
} while ($yymajor != self::YYNOCODE && $this->yyidx >= 0);
}
}#line 164 "oql-parser.y"
class OQLParserException extends OQLException
{
public function __construct($sInput, $iLine, $iCol, $sTokenName, $sTokenValue)
{
$sIssue = "Unexpected token $sTokenName";
parent::__construct($sIssue, $sInput, $iLine, $iCol, $sTokenValue);
}
}
class OQLParser extends OQLParserRaw
{
// dirty, but working for us (no other mean to get the final result :-(
protected $my_result;
public function GetResult()
{
return $this->my_result;
}
// More info on the source query and the current position while parsing it
// Data used when an exception is raised
protected $m_iLine; // still not used
protected $m_iCol;
protected $m_iColPrev; // this is the interesting one, because the parser will reduce on the next token
protected $m_sSourceQuery;
public function __construct($sQuery)
{
$this->m_iLine = 0;
$this->m_iCol = 0;
$this->m_iColPrev = 0;
$this->m_sSourceQuery = $sQuery;
// no constructor - parent::__construct();
}
public function doParse($token, $value, $iCurrPosition = 0)
{
$this->m_iColPrev = $this->m_iCol;
$this->m_iCol = $iCurrPosition;
return parent::DoParse($token, $value);
}
public function doFinish()
{
$this->doParse(0, 0);
return $this->my_result;
}
public function __destruct()
{
// Bug in the original destructor, causing an infinite loop !
// This is a real issue when a fatal error occurs on the first token (the error could not be seen)
if (is_null($this->yyidx))
{
$this->yyidx = -1;
}
parent::__destruct();
}
}
#line 1677 "oql-parser.php"
}#line 186 "oql-parser.y"
class OQLParserException extends OQLException
{
public function __construct($sInput, $iLine, $iCol, $sTokenName, $sTokenValue)
{
$sIssue = "Unexpected token $sTokenName";
parent::__construct($sIssue, $sInput, $iLine, $iCol, $sTokenValue);
}
}
class OQLParser extends OQLParserRaw
{
// dirty, but working for us (no other mean to get the final result :-(
protected $my_result;
public function GetResult()
{
return $this->my_result;
}
// More info on the source query and the current position while parsing it
// Data used when an exception is raised
protected $m_iLine; // still not used
protected $m_iCol;
protected $m_iColPrev; // this is the interesting one, because the parser will reduce on the next token
protected $m_sSourceQuery;
public function __construct($sQuery)
{
$this->m_iLine = 0;
$this->m_iCol = 0;
$this->m_iColPrev = 0;
$this->m_sSourceQuery = $sQuery;
// no constructor - parent::__construct();
}
public function doParse($token, $value, $iCurrPosition = 0)
{
$this->m_iColPrev = $this->m_iCol;
$this->m_iCol = $iCurrPosition;
return parent::DoParse($token, $value);
}
public function doFinish()
{
$this->doParse(0, 0);
return $this->my_result;
}
public function __destruct()
{
// Bug in the original destructor, causing an infinite loop !
// This is a real issue when a fatal error occurs on the first token (the error could not be seen)
if (is_null($this->yyidx))
{
$this->yyidx = -1;
}
parent::__destruct();
}
}
#line 1676 "oql-parser.php"

479
core/oql/oql-parser.y
View File

@@ -1,229 +1,250 @@
%name OQLParser_
%declare_class {class OQLParserRaw}
%syntax_error {
throw new OQLParserException($this->m_sSourceQuery, $this->m_iLine, $this->m_iCol, $this->tokenName($yymajor), $TOKEN);
}
result ::= query(X). { $this->my_result = X; }
result ::= condition(X). { $this->my_result = X; }
query(A) ::= SELECT class_name(X) join_statement(J) where_statement(W). {
A = new OqlQuery(X, X, W, J);
}
query(A) ::= SELECT class_name(X) AS_ALIAS class_name(Y) join_statement(J) where_statement(W). {
A = new OqlQuery(X, Y, W, J);
}
where_statement(A) ::= WHERE condition(C). { A = C;}
where_statement(A) ::= . { A = null;}
join_statement(A) ::= join_item(J) join_statement(S). {
// insert the join statement on top of the existing list
array_unshift(S, J);
// and return the updated array
A = S;
}
join_statement(A) ::= join_item(J). {
A = Array(J);
}
join_statement(A) ::= . { A = null;}
join_item(A) ::= JOIN class_name(X) AS_ALIAS class_name(Y) ON join_condition(C).
{
// create an array with one single item
A = new OqlJoinSpec(X, Y, C);
}
join_item(A) ::= JOIN class_name(X) ON join_condition(C).
{
// create an array with one single item
A = new OqlJoinSpec(X, X, C);
}
join_condition(A) ::= field_id(X) EQ field_id(Y). { A = new BinaryOqlExpression(X, '=', Y); }
condition(A) ::= expression_prio4(X). { A = X; }
expression_basic(A) ::= scalar(X). { A = X; }
expression_basic(A) ::= field_id(X). { A = X; }
expression_basic(A) ::= func_name(X) PAR_OPEN arg_list(Y) PAR_CLOSE. { A = new FunctionOqlExpression(X, Y); }
expression_basic(A) ::= PAR_OPEN expression_prio4(X) PAR_CLOSE. { A = X; }
expression_basic(A) ::= expression_basic(X) list_operator(Y) list(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio1(A) ::= expression_basic(X). { A = X; }
expression_prio1(A) ::= expression_prio1(X) operator1(Y) expression_basic(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio2(A) ::= expression_prio1(X). { A = X; }
expression_prio2(A) ::= expression_prio2(X) operator2(Y) expression_prio1(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio3(A) ::= expression_prio2(X). { A = X; }
expression_prio3(A) ::= expression_prio3(X) operator3(Y) expression_prio2(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio4(A) ::= expression_prio3(X). { A = X; }
expression_prio4(A) ::= expression_prio4(X) operator4(Y) expression_prio3(Z). { A = new BinaryOqlExpression(X, Y, Z); }
list(A) ::= PAR_OPEN scalar_list(X) PAR_CLOSE. {
A = new ListOqlExpression(X);
}
scalar_list(A) ::= scalar(X). {
A = array(X);
}
scalar_list(A) ::= scalar_list(L) COMA scalar(X). {
array_push(L, X);
A = L;
}
arg_list(A) ::= . {
A = array();
}
arg_list(A) ::= argument(X). {
A = array(X);
}
arg_list(A) ::= arg_list(L) COMA argument(X). {
array_push(L, X);
A = L;
}
argument(A) ::= expression_prio4(X). { A = X; }
argument(A) ::= INTERVAL expression_prio4(X) interval_unit(Y). { A = new IntervalOqlExpression(X, Y); }
interval_unit(A) ::= F_DAY(X). { A = X; }
interval_unit(A) ::= F_MONTH(X). { A = X; }
interval_unit(A) ::= F_YEAR(X). { A = X; }
scalar(A) ::= num_scalar(X). { A = X; }
scalar(A) ::= str_scalar(X). { A = X; }
num_scalar(A) ::= num_value(X). { A = new ScalarOqlExpression(X); }
str_scalar(A) ::= str_value(X). { A = new ScalarOqlExpression(X); }
field_id(A) ::= name(X). { A = new FieldOqlExpression(X); }
field_id(A) ::= class_name(X) DOT name(Y). { A = new FieldOqlExpression(Y, X); }
class_name(A) ::= name(X). { A=X; }
name(A) ::= NAME(X). {
if (X[0] == '`')
{
$name = substr(X, 1, strlen(X) - 2);
}
else
{
$name = X;
}
A = new OqlName($name, $this->m_iColPrev);
}
num_value(A) ::= NUMVAL(X). {A=X;}
str_value(A) ::= STRVAL(X). {A=stripslashes(substr(X, 1, strlen(X) - 2));}
operator1(A) ::= num_operator1(X). {A=X;}
operator2(A) ::= num_operator2(X). {A=X;}
operator2(A) ::= str_operator(X). {A=X;}
operator2(A) ::= EQ(X). {A=X;}
operator2(A) ::= NOT_EQ(X). {A=X;}
operator3(A) ::= LOG_AND(X). {A=X;}
operator4(A) ::= LOG_OR(X). {A=X;}
num_operator1(A) ::= MATH_DIV(X). {A=X;}
num_operator1(A) ::= MATH_MULT(X). {A=X;}
num_operator2(A) ::= MATH_PLUS(X). {A=X;}
num_operator2(A) ::= MATH_MINUS(X). {A=X;}
num_operator2(A) ::= GT(X). {A=X;}
num_operator2(A) ::= LT(X). {A=X;}
num_operator2(A) ::= GE(X). {A=X;}
num_operator2(A) ::= LE(X). {A=X;}
str_operator(A) ::= LIKE(X). {A=X;}
str_operator(A) ::= NOT_LIKE(X). {A=X;}
list_operator(A) ::= IN(X). {A=X;}
list_operator(A) ::= NOT_IN(X). {A=X;}
func_name(A) ::= F_IF(X). { A=X; }
func_name(A) ::= F_ELT(X). { A=X; }
func_name(A) ::= F_COALESCE(X). { A=X; }
func_name(A) ::= F_CONCAT(X). { A=X; }
func_name(A) ::= F_SUBSTR(X). { A=X; }
func_name(A) ::= F_TRIM(X). { A=X; }
func_name(A) ::= F_DATE(X). { A=X; }
func_name(A) ::= F_DATE_FORMAT(X). { A=X; }
func_name(A) ::= F_CURRENT_DATE(X). { A=X; }
func_name(A) ::= F_NOW(X). { A=X; }
func_name(A) ::= F_TIME(X). { A=X; }
func_name(A) ::= F_TO_DAYS(X). { A=X; }
func_name(A) ::= F_FROM_DAYS(X). { A=X; }
func_name(A) ::= F_YEAR(X). { A=X; }
func_name(A) ::= F_MONTH(X). { A=X; }
func_name(A) ::= F_DAY(X). { A=X; }
func_name(A) ::= F_DATE_ADD(X). { A=X; }
func_name(A) ::= F_DATE_SUB(X). { A=X; }
func_name(A) ::= F_ROUND(X). { A=X; }
func_name(A) ::= F_FLOOR(X). { A=X; }
%code {
class OQLParserException extends OQLException
{
public function __construct($sInput, $iLine, $iCol, $sTokenName, $sTokenValue)
{
$sIssue = "Unexpected token $sTokenName";
parent::__construct($sIssue, $sInput, $iLine, $iCol, $sTokenValue);
}
}
class OQLParser extends OQLParserRaw
{
// dirty, but working for us (no other mean to get the final result :-(
protected $my_result;
public function GetResult()
{
return $this->my_result;
}
// More info on the source query and the current position while parsing it
// Data used when an exception is raised
protected $m_iLine; // still not used
protected $m_iCol;
protected $m_iColPrev; // this is the interesting one, because the parser will reduce on the next token
protected $m_sSourceQuery;
public function __construct($sQuery)
{
$this->m_iLine = 0;
$this->m_iCol = 0;
$this->m_iColPrev = 0;
$this->m_sSourceQuery = $sQuery;
// no constructor - parent::__construct();
}
public function doParse($token, $value, $iCurrPosition = 0)
{
$this->m_iColPrev = $this->m_iCol;
$this->m_iCol = $iCurrPosition;
return parent::DoParse($token, $value);
}
public function doFinish()
{
$this->doParse(0, 0);
return $this->my_result;
}
public function __destruct()
{
// Bug in the original destructor, causing an infinite loop !
// This is a real issue when a fatal error occurs on the first token (the error could not be seen)
if (is_null($this->yyidx))
{
$this->yyidx = -1;
}
parent::__destruct();
}
}
}
/*
This is a LALR(1) grammar
(seek for Lemon grammar to get some documentation from the Net)
That doc was helpful: http://www.hwaci.com/sw/lemon/lemon.html
To handle operators precedence we could have used the %left directive
(we took another option, because that one was discovered right after...
which option is the best for us?)
Example:
%left LOG_AND.
%left LOG_OR.
%nonassoc EQ NE GT GE LT LE.
%left PLUS MINUS.
%left TIMES DIVIDE MOD.
%right EXP NOT.
TODO : solve the 2 remaining shift-reduce conflicts (JOIN)
*/
%name OQLParser_
%declare_class {class OQLParserRaw}
%syntax_error {
throw new OQLParserException($this->m_sSourceQuery, $this->m_iLine, $this->m_iCol, $this->tokenName($yymajor), $TOKEN);
}
result ::= query(X). { $this->my_result = X; }
result ::= condition(X). { $this->my_result = X; }
query(A) ::= SELECT class_name(X) join_statement(J) where_statement(W). {
A = new OqlQuery(X, X, W, J);
}
query(A) ::= SELECT class_name(X) AS_ALIAS class_name(Y) join_statement(J) where_statement(W). {
A = new OqlQuery(X, Y, W, J);
}
where_statement(A) ::= WHERE condition(C). { A = C;}
where_statement(A) ::= . { A = null;}
join_statement(A) ::= join_item(J) join_statement(S). {
// insert the join statement on top of the existing list
array_unshift(S, J);
// and return the updated array
A = S;
}
join_statement(A) ::= join_item(J). {
A = Array(J);
}
join_statement(A) ::= . { A = null;}
join_item(A) ::= JOIN class_name(X) AS_ALIAS class_name(Y) ON join_condition(C).
{
// create an array with one single item
A = new OqlJoinSpec(X, Y, C);
}
join_item(A) ::= JOIN class_name(X) ON join_condition(C).
{
// create an array with one single item
A = new OqlJoinSpec(X, X, C);
}
join_condition(A) ::= field_id(X) EQ field_id(Y). { A = new BinaryOqlExpression(X, '=', Y); }
condition(A) ::= expression_prio4(X). { A = X; }
expression_basic(A) ::= scalar(X). { A = X; }
expression_basic(A) ::= field_id(X). { A = X; }
expression_basic(A) ::= func_name(X) PAR_OPEN arg_list(Y) PAR_CLOSE. { A = new FunctionOqlExpression(X, Y); }
expression_basic(A) ::= PAR_OPEN expression_prio4(X) PAR_CLOSE. { A = X; }
expression_basic(A) ::= expression_basic(X) list_operator(Y) list(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio1(A) ::= expression_basic(X). { A = X; }
expression_prio1(A) ::= expression_prio1(X) operator1(Y) expression_basic(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio2(A) ::= expression_prio1(X). { A = X; }
expression_prio2(A) ::= expression_prio2(X) operator2(Y) expression_prio1(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio3(A) ::= expression_prio2(X). { A = X; }
expression_prio3(A) ::= expression_prio3(X) operator3(Y) expression_prio2(Z). { A = new BinaryOqlExpression(X, Y, Z); }
expression_prio4(A) ::= expression_prio3(X). { A = X; }
expression_prio4(A) ::= expression_prio4(X) operator4(Y) expression_prio3(Z). { A = new BinaryOqlExpression(X, Y, Z); }
list(A) ::= PAR_OPEN scalar_list(X) PAR_CLOSE. {
A = new ListOqlExpression(X);
}
scalar_list(A) ::= scalar(X). {
A = array(X);
}
scalar_list(A) ::= scalar_list(L) COMA scalar(X). {
array_push(L, X);
A = L;
}
arg_list(A) ::= . {
A = array();
}
arg_list(A) ::= argument(X). {
A = array(X);
}
arg_list(A) ::= arg_list(L) COMA argument(X). {
array_push(L, X);
A = L;
}
argument(A) ::= expression_prio4(X). { A = X; }
argument(A) ::= INTERVAL expression_prio4(X) interval_unit(Y). { A = new IntervalOqlExpression(X, Y); }
interval_unit(A) ::= F_DAY(X). { A = X; }
interval_unit(A) ::= F_MONTH(X). { A = X; }
interval_unit(A) ::= F_YEAR(X). { A = X; }
scalar(A) ::= num_scalar(X). { A = X; }
scalar(A) ::= str_scalar(X). { A = X; }
num_scalar(A) ::= num_value(X). { A = new ScalarOqlExpression(X); }
str_scalar(A) ::= str_value(X). { A = new ScalarOqlExpression(X); }
field_id(A) ::= name(X). { A = new FieldOqlExpression(X); }
field_id(A) ::= class_name(X) DOT name(Y). { A = new FieldOqlExpression(Y, X); }
class_name(A) ::= name(X). { A=X; }
name(A) ::= NAME(X). {
if (X[0] == '`')
{
$name = substr(X, 1, strlen(X) - 2);
}
else
{
$name = X;
}
A = new OqlName($name, $this->m_iColPrev);
}
num_value(A) ::= NUMVAL(X). {A=X;}
str_value(A) ::= STRVAL(X). {A=stripslashes(substr(X, 1, strlen(X) - 2));}
operator1(A) ::= num_operator1(X). {A=X;}
operator2(A) ::= num_operator2(X). {A=X;}
operator2(A) ::= str_operator(X). {A=X;}
operator2(A) ::= EQ(X). {A=X;}
operator2(A) ::= NOT_EQ(X). {A=X;}
operator3(A) ::= LOG_AND(X). {A=X;}
operator4(A) ::= LOG_OR(X). {A=X;}
num_operator1(A) ::= MATH_DIV(X). {A=X;}
num_operator1(A) ::= MATH_MULT(X). {A=X;}
num_operator2(A) ::= MATH_PLUS(X). {A=X;}
num_operator2(A) ::= MATH_MINUS(X). {A=X;}
num_operator2(A) ::= GT(X). {A=X;}
num_operator2(A) ::= LT(X). {A=X;}
num_operator2(A) ::= GE(X). {A=X;}
num_operator2(A) ::= LE(X). {A=X;}
str_operator(A) ::= LIKE(X). {A=X;}
str_operator(A) ::= NOT_LIKE(X). {A=X;}
list_operator(A) ::= IN(X). {A=X;}
list_operator(A) ::= NOT_IN(X). {A=X;}
func_name(A) ::= F_IF(X). { A=X; }
func_name(A) ::= F_ELT(X). { A=X; }
func_name(A) ::= F_COALESCE(X). { A=X; }
func_name(A) ::= F_CONCAT(X). { A=X; }
func_name(A) ::= F_SUBSTR(X). { A=X; }
func_name(A) ::= F_TRIM(X). { A=X; }
func_name(A) ::= F_DATE(X). { A=X; }
func_name(A) ::= F_DATE_FORMAT(X). { A=X; }
func_name(A) ::= F_CURRENT_DATE(X). { A=X; }
func_name(A) ::= F_NOW(X). { A=X; }
func_name(A) ::= F_TIME(X). { A=X; }
func_name(A) ::= F_TO_DAYS(X). { A=X; }
func_name(A) ::= F_FROM_DAYS(X). { A=X; }
func_name(A) ::= F_YEAR(X). { A=X; }
func_name(A) ::= F_MONTH(X). { A=X; }
func_name(A) ::= F_DAY(X). { A=X; }
func_name(A) ::= F_DATE_ADD(X). { A=X; }
func_name(A) ::= F_DATE_SUB(X). { A=X; }
func_name(A) ::= F_ROUND(X). { A=X; }
func_name(A) ::= F_FLOOR(X). { A=X; }
%code {
class OQLParserException extends OQLException
{
public function __construct($sInput, $iLine, $iCol, $sTokenName, $sTokenValue)
{
$sIssue = "Unexpected token $sTokenName";
parent::__construct($sIssue, $sInput, $iLine, $iCol, $sTokenValue);
}
}
class OQLParser extends OQLParserRaw
{
// dirty, but working for us (no other mean to get the final result :-(
protected $my_result;
public function GetResult()
{
return $this->my_result;
}
// More info on the source query and the current position while parsing it
// Data used when an exception is raised
protected $m_iLine; // still not used
protected $m_iCol;
protected $m_iColPrev; // this is the interesting one, because the parser will reduce on the next token
protected $m_sSourceQuery;
public function __construct($sQuery)
{
$this->m_iLine = 0;
$this->m_iCol = 0;
$this->m_iColPrev = 0;
$this->m_sSourceQuery = $sQuery;
// no constructor - parent::__construct();
}
public function doParse($token, $value, $iCurrPosition = 0)
{
$this->m_iColPrev = $this->m_iCol;
$this->m_iCol = $iCurrPosition;
return parent::DoParse($token, $value);
}
public function doFinish()
{
$this->doParse(0, 0);
return $this->my_result;
}
public function __destruct()
{
// Bug in the original destructor, causing an infinite loop !
// This is a real issue when a fatal error occurs on the first token (the error could not be seen)
if (is_null($this->yyidx))
{
$this->yyidx = -1;
}
parent::__destruct();
}
}
}