@@ 21-141 (lines=121) @@ | ||
18 | * |
|
19 | * @license https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+ |
|
20 | */ |
|
21 | class GroupKeyword extends Component |
|
22 | { |
|
23 | /** |
|
24 | * The expression that is used for ordering. |
|
25 | * |
|
26 | * @var Expression |
|
27 | */ |
|
28 | public $expr; |
|
29 | ||
30 | /** |
|
31 | * The order type. |
|
32 | * |
|
33 | * @var string |
|
34 | */ |
|
35 | public $type; |
|
36 | ||
37 | /** |
|
38 | * Constructor. |
|
39 | * |
|
40 | * @param Expression $expr the expression that we are sorting by |
|
41 | * @param string $type the sorting type |
|
42 | */ |
|
43 | public function __construct($expr = null, $type = '') |
|
44 | { |
|
45 | $this->expr = $expr; |
|
46 | $this->type = $type; |
|
47 | } |
|
48 | ||
49 | /** |
|
50 | * @param Parser $parser the parser that serves as context |
|
51 | * @param TokensList $list the list of tokens that are being parsed |
|
52 | * @param array $options parameters for parsing |
|
53 | * |
|
54 | * @return GroupKeyword[] |
|
55 | */ |
|
56 | public static function parse(Parser $parser, TokensList $list, array $options = array()) |
|
57 | { |
|
58 | $ret = array(); |
|
59 | ||
60 | $expr = new self(); |
|
61 | ||
62 | /** |
|
63 | * The state of the parser. |
|
64 | * |
|
65 | * Below are the states of the parser. |
|
66 | * |
|
67 | * 0 --------------------[ expression ]-------------------> 1 |
|
68 | * |
|
69 | * 1 ------------------------[ , ]------------------------> 0 |
|
70 | * 1 -------------------[ ASC / DESC ]--------------------> 1 |
|
71 | * |
|
72 | * @var int |
|
73 | */ |
|
74 | $state = 0; |
|
75 | ||
76 | for (; $list->idx < $list->count; ++$list->idx) { |
|
77 | /** |
|
78 | * Token parsed at this moment. |
|
79 | * |
|
80 | * @var Token |
|
81 | */ |
|
82 | $token = $list->tokens[$list->idx]; |
|
83 | ||
84 | // End of statement. |
|
85 | if ($token->type === Token::TYPE_DELIMITER) { |
|
86 | break; |
|
87 | } |
|
88 | ||
89 | // Skipping whitespaces and comments. |
|
90 | if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) { |
|
91 | continue; |
|
92 | } |
|
93 | ||
94 | if ($state === 0) { |
|
95 | $expr->expr = Expression::parse($parser, $list); |
|
96 | $state = 1; |
|
97 | } elseif ($state === 1) { |
|
98 | if (($token->type === Token::TYPE_KEYWORD) |
|
99 | && (($token->keyword === 'ASC') || ($token->keyword === 'DESC')) |
|
100 | ) { |
|
101 | $expr->type = $token->keyword; |
|
102 | } elseif (($token->type === Token::TYPE_OPERATOR) |
|
103 | && ($token->value === ',') |
|
104 | ) { |
|
105 | if (!empty($expr->expr)) { |
|
106 | $ret[] = $expr; |
|
107 | } |
|
108 | $expr = new self(); |
|
109 | $state = 0; |
|
110 | } else { |
|
111 | break; |
|
112 | } |
|
113 | } |
|
114 | } |
|
115 | ||
116 | // Last iteration was not processed. |
|
117 | if (!empty($expr->expr)) { |
|
118 | $ret[] = $expr; |
|
119 | } |
|
120 | ||
121 | --$list->idx; |
|
122 | ||
123 | return $ret; |
|
124 | } |
|
125 | ||
126 | /** |
|
127 | * @param GroupKeyword|GroupKeyword[] $component the component to be built |
|
128 | * @param array $options parameters for building |
|
129 | * |
|
130 | * @return string |
|
131 | */ |
|
132 | public static function build($component, array $options = array()) |
|
133 | { |
|
134 | if (is_array($component)) { |
|
135 | return implode(', ', $component); |
|
136 | } |
|
137 | ||
138 | return trim($component->expr . ' ' . $component->type); |
|
139 | ||
140 | } |
|
141 | } |
|
142 |
@@ 21-140 (lines=120) @@ | ||
18 | * |
|
19 | * @license https://www.gnu.org/licenses/gpl-2.0.txt GPL-2.0+ |
|
20 | */ |
|
21 | class OrderKeyword extends Component |
|
22 | { |
|
23 | /** |
|
24 | * The expression that is used for ordering. |
|
25 | * |
|
26 | * @var Expression |
|
27 | */ |
|
28 | public $expr; |
|
29 | ||
30 | /** |
|
31 | * The order type. |
|
32 | * |
|
33 | * @var string |
|
34 | */ |
|
35 | public $type; |
|
36 | ||
37 | /** |
|
38 | * Constructor. |
|
39 | * |
|
40 | * @param Expression $expr the expression that we are sorting by |
|
41 | * @param string $type the sorting type |
|
42 | */ |
|
43 | public function __construct($expr = null, $type = 'ASC') |
|
44 | { |
|
45 | $this->expr = $expr; |
|
46 | $this->type = $type; |
|
47 | } |
|
48 | ||
49 | /** |
|
50 | * @param Parser $parser the parser that serves as context |
|
51 | * @param TokensList $list the list of tokens that are being parsed |
|
52 | * @param array $options parameters for parsing |
|
53 | * |
|
54 | * @return OrderKeyword[] |
|
55 | */ |
|
56 | public static function parse(Parser $parser, TokensList $list, array $options = array()) |
|
57 | { |
|
58 | $ret = array(); |
|
59 | ||
60 | $expr = new self(); |
|
61 | ||
62 | /** |
|
63 | * The state of the parser. |
|
64 | * |
|
65 | * Below are the states of the parser. |
|
66 | * |
|
67 | * 0 --------------------[ expression ]-------------------> 1 |
|
68 | * |
|
69 | * 1 ------------------------[ , ]------------------------> 0 |
|
70 | * 1 -------------------[ ASC / DESC ]--------------------> 1 |
|
71 | * |
|
72 | * @var int |
|
73 | */ |
|
74 | $state = 0; |
|
75 | ||
76 | for (; $list->idx < $list->count; ++$list->idx) { |
|
77 | /** |
|
78 | * Token parsed at this moment. |
|
79 | * |
|
80 | * @var Token |
|
81 | */ |
|
82 | $token = $list->tokens[$list->idx]; |
|
83 | ||
84 | // End of statement. |
|
85 | if ($token->type === Token::TYPE_DELIMITER) { |
|
86 | break; |
|
87 | } |
|
88 | ||
89 | // Skipping whitespaces and comments. |
|
90 | if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) { |
|
91 | continue; |
|
92 | } |
|
93 | ||
94 | if ($state === 0) { |
|
95 | $expr->expr = Expression::parse($parser, $list); |
|
96 | $state = 1; |
|
97 | } elseif ($state === 1) { |
|
98 | if (($token->type === Token::TYPE_KEYWORD) |
|
99 | && (($token->keyword === 'ASC') || ($token->keyword === 'DESC')) |
|
100 | ) { |
|
101 | $expr->type = $token->keyword; |
|
102 | } elseif (($token->type === Token::TYPE_OPERATOR) |
|
103 | && ($token->value === ',') |
|
104 | ) { |
|
105 | if (!empty($expr->expr)) { |
|
106 | $ret[] = $expr; |
|
107 | } |
|
108 | $expr = new self(); |
|
109 | $state = 0; |
|
110 | } else { |
|
111 | break; |
|
112 | } |
|
113 | } |
|
114 | } |
|
115 | ||
116 | // Last iteration was not processed. |
|
117 | if (!empty($expr->expr)) { |
|
118 | $ret[] = $expr; |
|
119 | } |
|
120 | ||
121 | --$list->idx; |
|
122 | ||
123 | return $ret; |
|
124 | } |
|
125 | ||
126 | /** |
|
127 | * @param OrderKeyword|OrderKeyword[] $component the component to be built |
|
128 | * @param array $options parameters for building |
|
129 | * |
|
130 | * @return string |
|
131 | */ |
|
132 | public static function build($component, array $options = array()) |
|
133 | { |
|
134 | if (is_array($component)) { |
|
135 | return implode(', ', $component); |
|
136 | } |
|
137 | ||
138 | return $component->expr . ' ' . $component->type; |
|
139 | } |
|
140 | } |
|
141 |