searchcommandparser.php.svn-base

PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

                        $this->yystack[$this->yyidx] = $x;
                        continue 2;
                    } elseif ($nextstate == self::YYNSTATE + self::YYNRULE + 1) {
                        $this->yyidx = $yyidx;
                        $this->yystack = $stack;
                        if (!$token) {
                            // end of input: this is valid
                            return true;
                        }
                        // the last token was just ignored, we can't accept
                        // by ignoring input, this is in essence ignoring a
                        // syntax error!
                        return false;
                    } elseif ($nextstate === self::YY_NO_ACTION) {
                        $this->yyidx = $yyidx;
                        $this->yystack = $stack;
                        // input accepted, but not shifted (I guess)
                        return true;
                    } else {
                        $yyact = $nextstate;
                    }
                } while (true);
            }
            break;
        } while (true);
        $this->yyidx = $yyidx;
        $this->yystack = $stack;
        return true;
    }

    /**
     * Find the appropriate action for a parser given the terminal
     * look-ahead token iLookAhead.
     *
     * If the look-ahead token is YYNOCODE, then check to see if the action is
     * independent of the look-ahead.  If it is, return the action, otherwise
     * return YY_NO_ACTION.
     * @param int The look-ahead token
     */
    function yy_find_shift_action($iLookAhead)
    {
        $stateno = $this->yystack[$this->yyidx]->stateno;
     
        /* if ($this->yyidx < 0) return self::YY_NO_ACTION;  */
        if (!isset(self::$yy_shift_ofst[$stateno])) {
            // no shift actions
            return self::$yy_default[$stateno];
        }
        $i = self::$yy_shift_ofst[$stateno];
        if ($i === self::YY_SHIFT_USE_DFLT) {
            return self::$yy_default[$stateno];
        }
        if ($iLookAhead == self::YYNOCODE) {
            return self::YY_NO_ACTION;
        }
        $i += $iLookAhead;
        if ($i < 0 || $i >= self::YY_SZ_ACTTAB ||
              self::$yy_lookahead[$i] != $iLookAhead) {
            if (count(self::$yyFallback) && $iLookAhead < count(self::$yyFallback)
                   && ($iFallback = self::$yyFallback[$iLookAhead]) != 0) {
                if (self::$yyTraceFILE) {
                    fwrite(self::$yyTraceFILE, self::$yyTracePrompt . "FALLBACK " .
                        self::$yyTokenName[$iLookAhead] . " => " .
                        self::$yyTokenName[$iFallback] . "\n");
                }
                return $this->yy_find_shift_action($iFallback);
            }
            return self::$yy_default[$stateno];
        } else {
            return self::$yy_action[$i];
        }
    }

    /**
     * Find the appropriate action for a parser given the non-terminal
     * look-ahead token $iLookAhead.
     *
     * If the look-ahead token is self::YYNOCODE, then check to see if the action is
     * independent of the look-ahead.  If it is, return the action, otherwise
     * return self::YY_NO_ACTION.
     * @param int Current state number
     * @param int The look-ahead token
     */
    function yy_find_reduce_action($stateno, $iLookAhead)
    {
        /* $stateno = $this->yystack[$this->yyidx]->stateno; */

        if (!isset(self::$yy_reduce_ofst[$stateno])) {
            return self::$yy_default[$stateno];
        }
        $i = self::$yy_reduce_ofst[$stateno];
        if ($i == self::YY_REDUCE_USE_DFLT) {
            return self::$yy_default[$stateno];
        }
        if ($iLookAhead == self::YYNOCODE) {
            return self::YY_NO_ACTION;
        }
        $i += $iLookAhead;
        if ($i < 0 || $i >= self::YY_SZ_ACTTAB ||
              self::$yy_lookahead[$i] != $iLookAhead) {
            return self::$yy_default[$stateno];
        } else {
            return self::$yy_action[$i];
        }
    }

    /**
     * Perform a shift action.
     * @param int The new state to shift in
     * @param int The major token to shift in
     * @param mixed the minor token to shift in
     */
    function yy_shift($yyNewState, $yyMajor, $yypMinor)
    {
        $this->yyidx++;
        if ($this->yyidx >= self::YYSTACKDEPTH) {
            $this->yyidx--;
            if (self::$yyTraceFILE) {
                fprintf(self::$yyTraceFILE, "%sStack Overflow!\n", self::$yyTracePrompt);
            }
            while ($this->yyidx >= 0) {
                $this->yy_pop_parser_stack();
            }
            /* Here code is inserted which will execute if the parser
            ** stack ever overflows */
            return;
        }
        $yytos = new SearchCommandParseryyStackEntry;
        $yytos->stateno = $yyNewState;
        $yytos->major = $yyMajor;
        $yytos->minor = $yypMinor;
        array_push($this->yystack, $yytos);
        if (self::$yyTraceFILE && $this->yyidx > 0) {
            fprintf(self::$yyTraceFILE, "%sShift %d\n", self::$yyTracePrompt,
                $yyNewState);
            fprintf(self::$yyTraceFILE, "%sStack:", self::$yyTracePrompt);
            for($i = 1; $i <= $this->yyidx; $i++) {
                fprintf(self::$yyTraceFILE, " %s",
                    self::$yyTokenName[$this->yystack[$i]->major]);
            }
            fwrite(self::$yyTraceFILE,"\n");
        }
    }

    /**
     * The following table contains information about every rule that
     * is used during the reduce.
     *
     * <pre>
     * array(
     *  array(
     *   int $lhs;         Symbol on the left-hand side of the rule
     *   int $nrhs;     Number of right-hand side symbols in the rule
     *  ),...
     * );
     * </pre>
     */
    static public $yyRuleInfo = array(
  array( 'lhs' => 28, 'rhs' => 1 ),
  array( 'lhs' => 27, 'rhs' => 3 ),
  array( 'lhs' => 27, 'rhs' => 3 ),
  array( 'lhs' => 27, 'rhs' => 2 ),
  array( 'lhs' => 27, 'rhs' => 3 ),
  array( 'lhs' => 27, 'rhs' => 3 ),
  array( 'lhs' => 27, 'rhs' => 6 ),
  array( 'lhs' => 27, 'rhs' => 4 ),
  array( 'lhs' => 27, 'rhs' => 4 ),
  array( 'lhs' => 27, 'rhs' => 5 ),
  array( 'lhs' => 27, 'rhs' => 3 ),
  array( 'lhs' => 32, 'rhs' => 0 ),
  array( 'lhs' => 32, 'rhs' => 1 ),
  array( 'lhs' => 29, 'rhs' => 6 ),
  array( 'lhs' => 29, 'rhs' => 1 ),
  array( 'lhs' => 31, 'rhs' => 1 ),
  array( 'lhs' => 31, 'rhs' => 3 ),
  array( 'lhs' => 33, 'rhs' => 3 ),
  array( 'lhs' => 33, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
  array( 'lhs' => 30, 'rhs' => 2 ),
  array( 'lhs' => 30, 'rhs' => 2 ),
  array( 'lhs' => 30, 'rhs' => 1 ),
    );

    /**
     * The following table contains a mapping of reduce action to method name
     * that handles the reduction.
     * 
     * If a rule is not set, it has no handler.
     */
    static public $yyReduceMap = array(
        0 => 0,
        1 => 1,
        2 => 2,
        3 => 3,
        4 => 4,
        16 => 4,
        5 => 5,
        6 => 6,
        7 => 7,
        8 => 8,
        9 => 9,
        10 => 10,
        11 => 11,
        12 => 12,
        13 => 13,
        14 => 14,
        15 => 15,
        17 => 17,
        18 => 18,
        19 => 19,
        20 => 20,
        21 => 21,
        22 => 22,
        23 => 23,
        24 => 24,
        25 => 25,
        26 => 26,
    );
    /* Beginning here are the reduction cases.  A typical example
    ** follows:
    **  #line <lineno> <grammarfile>
    **   function yy_r0($yymsp){ ... }           // User supplied code
    **  #line <lineno> <thisfile>
    */
#line 53 "SearchCommandParser.y"
    function yy_r0(){
	$this->expr_result = $this->yystack[$this->yyidx + 0]->minor;
    }
#line 900 "SearchCommandParser.php"
#line 58 "SearchCommandParser.y"
    function yy_r1(){
	$this->_retvalue = new OpExpr($this->yystack[$this->yyidx + -2]->minor, ExprOp::OP_AND, $this->yystack[$this->yyidx + 0]->minor);
    }
#line 905 "SearchCommandParser.php"
#line 63 "SearchCommandParser.y"
    function yy_r2(){
	$this->_retvalue = new OpExpr($this->yystack[$this->yyidx + -2]->minor, ExprOp::OP_OR, $this->yystack[$this->yyidx + 0]->minor);
    }
#line 910 "SearchCommandParser.php"
#line 68 "SearchCommandParser.y"
    function yy_r3(){
	$expr = $this->yystack[$this->yyidx + 0]->minor;
	$expr->not(!$expr->not());
	$this->_retvalue = $expr;
    }
#line 917 "SearchCommandParser.php"
#line 75 "SearchCommandParser.y"
    function yy_r4(){
	$this->_retvalue = $this->yystack[$this->yyidx + -1]->minor;
    }
#line 922 "SearchCommandParser.php"
#line 80 "SearchCommandParser.y"
    function yy_r5(){
	$op = $this->yystack[$this->yyidx + -1]->minor;
	$not = false;
	if ($op == ExprOp::IS_NOT)
	{
		$op = ExprOp::IS;
		$not = true;
	}

	$fld = new OpExpr($this->yystack[$this->yyidx + -2]->minor, $op, $this->yystack[$this->yyidx + 0]->minor);
	$fld->not($not);
	$this->_retvalue = $fld;
    }
#line 937 "SearchCommandParser.php"
#line 95 "SearchCommandParser.y"
    function yy_r6(){
	$expr = new OpExpr($this->yystack[$this->yyidx + -5]->minor, ExprOp::BETWEEN, new BetweenValueExpr($this->yystack[$this->yyidx + -2]->minor, $this->yystack[$this->yyidx + 0]->minor));
	$expr->not($this->yystack[$this->yyidx + -4]->minor);
	$this->_retvalue=$expr;
    }
#line 944 "SearchCommandParser.php"
#line 102 "SearchCommandParser.y"
    function yy_r7(){
	$expr = new OpExpr($this->yystack[$this->yyidx + -3]->minor, ExprOp::LIKE, $this->yystack[$this->yyidx + 0]->minor);
	$expr->not($this->yystack[$this->yyidx + -2]->minor);
	$this->_retvalue=$expr;
    }
#line 951 "SearchCommandParser.php"
#line 109 "SearchCommandParser.y"
    function yy_r8(){
	$expr = new OpExpr($this->yystack[$this->yyidx + -3]->minor, ExprOp::IS, $this->yystack[$this->yyidx + 0]->minor);
	$expr->not($this->yystack[$this->yyidx + -1]->minor);
	$this->_retvalue=$expr;
    }
#line 958 "SearchCommandParser.php"
#line 116 "SearchCommandParser.y"
    function yy_r9(){
	$expr = new OpExpr($this->yystack[$this->yyidx + -4]->minor, ExprOp::CONTAINS, $this->yystack[$this->yyidx + 0]->minor);
	$expr->not($this->yystack[$this->yyidx + -2]->minor);
	$this->_retvalue=$expr;
    }
#line 965 "SearchCommandParser.php"
#line 123 "SearchCommandParser.y"
    function yy_r10(){
	$this->_retvalue = new OpExpr($this->yystack[$this->yyidx + -2]->minor, ExprOp::CONTAINS, $this->yystack[$this->yyidx + 0]->minor);
    }
#line 970 "SearchCommandParser.php"
#line 129 "SearchCommandParser.y"
    function yy_r11(){
	$this->_retvalue = false;
    }
#line 975 "SearchCommandParser.php"
#line 134 "SearchCommandParser.y"
    function yy_r12(){
	$this->_retvalue = true;
    }
#line 980 "SearchCommandParser.php"
#line 139 "SearchCommandParser.y"
    function yy_r13(){
	$registry = ExprFieldRegistry::getRegistry();
	$field = $registry->resolveMetadataField($this->yystack[$this->yyidx + -4]->minor, $this->yystack[$this->yyidx + -1]->minor);
	$this->_retvalue = $field;
    }
#line 987 "SearchCommandParser.php"
#line 146 "SearchCommandParser.y"
    function yy_r14(){
	$registry = ExprFieldRegistry::getRegistry();
	$field=$registry->resolveAlias($this->yystack[$this->yyidx + 0]->minor);
	$this->_retvalue = $field;
    }
#line 994 "SearchCommandParser.php"
#line 153 "SearchCommandParser.y"
    function yy_r15(){
	$this->_retvalue = $this->yystack[$this->yyidx + 0]->minor;
    }