|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
/** |
|
6
|
|
|
* @license http://opensource.org/licenses/mit-license.php MIT |
|
7
|
|
|
* @link https://github.com/nicoSWD |
|
8
|
|
|
* @author Nicolas Oelgart <[email protected]> |
|
9
|
|
|
*/ |
|
10
|
|
|
namespace nicoSWD\Rules; |
|
11
|
|
|
|
|
12
|
|
|
use nicoSWD\Rules\Tokens\BaseToken; |
|
13
|
|
|
use nicoSWD\Rules\Tokens\TokenOpeningParenthesis; |
|
14
|
|
|
|
|
15
|
|
|
class Compiler |
|
16
|
|
|
{ |
|
17
|
|
|
const BOOL_TRUE = '1'; |
|
18
|
|
|
const BOOL_FALSE = '0'; |
|
19
|
|
|
|
|
20
|
|
|
const LOGICAL_AND = '&'; |
|
21
|
|
|
const LOGICAL_OR = '|'; |
|
22
|
|
|
|
|
23
|
|
|
const OPENING_PARENTHESIS = '('; |
|
24
|
|
|
const CLOSING_PARENTHESIS = ')'; |
|
25
|
|
|
|
|
26
|
|
|
private $output = ''; |
|
27
|
|
|
private $openParenthesis = 0; |
|
28
|
|
|
private $closedParenthesis = 0; |
|
29
|
|
|
|
|
30
|
220 |
|
public function clear() |
|
31
|
|
|
{ |
|
32
|
220 |
|
$this->output = ''; |
|
33
|
220 |
|
} |
|
34
|
|
|
|
|
35
|
160 |
|
public function getCompiledRule() |
|
36
|
|
|
{ |
|
37
|
160 |
|
if ($this->isIncompleteCondition()) { |
|
38
|
4 |
|
throw new Exceptions\ParserException('Incomplete condition'); |
|
39
|
156 |
|
} elseif (!$this->numParenthesesMatch()) { |
|
40
|
2 |
|
throw new Exceptions\ParserException('Missing closing parenthesis'); |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
154 |
|
return $this->output; |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
20 |
|
private function openParenthesis() |
|
47
|
|
|
{ |
|
48
|
20 |
|
$this->openParenthesis++; |
|
49
|
20 |
|
$this->output .= self::OPENING_PARENTHESIS; |
|
50
|
20 |
|
} |
|
51
|
|
|
|
|
52
|
20 |
|
private function closeParenthesis(BaseToken $token) |
|
53
|
|
|
{ |
|
54
|
20 |
|
if ($this->openParenthesis < 1) { |
|
55
|
2 |
|
throw new Exceptions\ParserException(sprintf( |
|
56
|
2 |
|
'Missing opening parenthesis at position %d on line %d', |
|
57
|
2 |
|
$token->getPosition(), |
|
58
|
2 |
|
$token->getLine() |
|
59
|
|
|
)); |
|
60
|
|
|
} |
|
61
|
|
|
|
|
62
|
18 |
|
$this->closedParenthesis++; |
|
63
|
18 |
|
$this->output .= self::CLOSING_PARENTHESIS; |
|
64
|
18 |
|
} |
|
65
|
|
|
|
|
66
|
22 |
|
public function addParentheses(BaseToken $token) |
|
67
|
|
|
{ |
|
68
|
22 |
|
if ($token instanceof Tokens\TokenOpeningParenthesis) { |
|
69
|
20 |
|
if (!$this->expectOpeningParenthesis()) { |
|
70
|
4 |
|
throw Exceptions\ParserException::unexpectedToken($token); |
|
71
|
|
|
} |
|
72
|
20 |
|
$this->openParenthesis(); |
|
73
|
|
|
} else { |
|
74
|
20 |
|
$this->closeParenthesis($token); |
|
75
|
|
|
} |
|
76
|
20 |
|
} |
|
77
|
|
|
|
|
78
|
36 |
|
public function addLogical(BaseToken $token) |
|
79
|
|
|
{ |
|
80
|
36 |
|
$lastChar = $this->getLastChar(); |
|
81
|
|
|
|
|
82
|
36 |
|
if ($lastChar === self::LOGICAL_AND || $lastChar === self::LOGICAL_OR) { |
|
83
|
2 |
|
throw Exceptions\ParserException::unexpectedToken($token); |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
36 |
|
if ($token instanceof Tokens\TokenAnd) { |
|
87
|
34 |
|
$this->output .= self::LOGICAL_AND; |
|
88
|
|
|
} else { |
|
89
|
14 |
|
$this->output .= self::LOGICAL_OR; |
|
90
|
|
|
} |
|
91
|
36 |
|
} |
|
92
|
|
|
|
|
93
|
172 |
|
public function addBoolean(bool $bool) |
|
94
|
|
|
{ |
|
95
|
172 |
|
$lastChar = $this->getLastChar(); |
|
96
|
|
|
|
|
97
|
172 |
|
if ($lastChar === self::BOOL_TRUE || $lastChar === self::BOOL_FALSE) { |
|
98
|
2 |
|
throw new Exceptions\MissingOperatorException(); |
|
99
|
|
|
} |
|
100
|
|
|
|
|
101
|
172 |
|
$this->output .= $bool ? self::BOOL_TRUE : self::BOOL_FALSE; |
|
102
|
172 |
|
} |
|
103
|
|
|
|
|
104
|
156 |
|
private function numParenthesesMatch(): bool |
|
105
|
|
|
{ |
|
106
|
156 |
|
return $this->openParenthesis === $this->closedParenthesis; |
|
107
|
|
|
} |
|
108
|
|
|
|
|
109
|
160 |
|
private function isIncompleteCondition(): bool |
|
110
|
|
|
{ |
|
111
|
160 |
|
$lastChar = $this->getLastChar(); |
|
112
|
|
|
|
|
113
|
|
|
return ( |
|
114
|
160 |
|
$lastChar === self::LOGICAL_AND || |
|
115
|
160 |
|
$lastChar === self::LOGICAL_OR |
|
116
|
|
|
); |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
20 |
|
private function expectOpeningParenthesis(): bool |
|
120
|
|
|
{ |
|
121
|
20 |
|
$lastChar = $this->getLastChar(); |
|
122
|
|
|
|
|
123
|
|
|
return ( |
|
124
|
20 |
|
$lastChar === '' || |
|
125
|
18 |
|
$lastChar === self::LOGICAL_AND || |
|
126
|
12 |
|
$lastChar === self::LOGICAL_OR || |
|
127
|
20 |
|
$lastChar === self::OPENING_PARENTHESIS |
|
128
|
|
|
); |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
174 |
|
private function getLastChar(): string |
|
132
|
|
|
{ |
|
133
|
174 |
|
return substr($this->output, -1); |
|
134
|
|
|
} |
|
135
|
|
|
} |
nicoSWD /
php-rule-parser
