TokenStream::prev() - Code Metrics - eserozvataf/scabbia2-scanners - Measure and Improve Code Quality continuously with Scrutinizer

TokenStream::prev() A
last analyzed 2016-01-03 14:58 UTC

↳ Parent: TokenStream

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
rs	10
cc	1
eloc	2
nc	1
nop	0

<?php
/**
 * Scabbia2 Scanners Component
 * https://github.com/eserozvataf/scabbia2
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @link        https://github.com/eserozvataf/scabbia2-scanners for the canonical source repository
 * @copyright   2010-2016 Eser Ozvataf. (http://eser.ozvataf.com/)
 * @license     http://www.apache.org/licenses/LICENSE-2.0 - Apache License, Version 2.0
 */

namespace Scabbia\Scanners;

use Countable;
use Exception;
use SeekableIterator;
use UnexpectedValueException;
use OutOfBoundsException;

/**
 * TokenStream
 *
 * @package     Scabbia\Scanners
 * @author      Eser Ozvataf <[email protected]>
 * @since       2.0.0
 */
class TokenStream implements Countable, SeekableIterator
{
    /** @type array $tokens set of tokens */
    public $tokens = [];
    /** @type int   $position */
    public $position = 0;


    /**
     * Creates a new tokenstream instance from a code piece
     *
     * @param string $uCode  the string consists of codes to turned into tokens
     *
     * @return TokenStream the new instance
     */
    public static function fromString($uCode)
    {
        return new static(token_get_all($uCode));
    }

    /**
     * Initializes a token stream
     *
     * @param array $uTokens    set of tokens
     *
     * @return TokenStream

     */
    public function __construct(array $uTokens = [])
    {
        foreach ($uTokens as $tToken) {
            if (is_array($tToken)) {
                $this->tokens[] = [$tToken[0], $tToken[1]];
            } else {
                $this->tokens[] = [null, $tToken];
            }
        }
    }

    /**
     * Count elements of an object
     *
     * @return int the count as an integer
     */
    public function count()
    {
        return count($this->tokens);
    }

    /**
     * Seeks to a position
     *
     * @param int $uPosition the position to seek to
     *
     * @throws OutOfBoundsException
     * @return void
     */
    public function seek($uPosition)
    {
        if (!isset($this->tokens[$uPosition])) {
            throw new OutOfBoundsException("invalid seek position ({$uPosition})");
        }

        $this->position = $uPosition;
    }

    /**
     * Rewind the Iterator to the first element
     *
     * @return void
     */
    public function rewind()
    {
        $this->position = 0;
    }

    /**
     * Return the current element
     *
     * @return mixed
     */
    public function current()
    {
        return $this->tokens[$this->position];
    }

    /**
     * Return the key of the current element
     *
     * @return int
     */
    public function key()
    {
        return $this->position;
    }

    /**
     * Move forward to next element
     *
     * @return void
     */
    public function next()
    {
        $this->position++;
    }

    /**
     * Checks if current position is valid
     *
     * @return bool true on success or false on failure
     */
    public function valid()
    {
        return isset($this->tokens[$this->position]);
    }

    /**
     * Move back to previous element
     *
     * @return mixed
     */
    public function prev()
    {
        $this->position--;
    }

    /**
     * Gets next token if condition is true
     *
     * @param  array|integer     $uType
     * @param  array|string|null $uValue
     *
     * @return bool
     */
    public function nextIf($uType, $uValue = null)
    {
        if ($this->test($uType, $uValue)) {
            $this->position++;
            return true;
        }

        return false;
    }

    /**
     * Advances until a token with the given type is found
     *
     * @param  array|integer     $uType
     * @param  array|string|null $uValue
     *
     * @return mixed
     */
    public function nextUntil($uType, $uValue = null)
    {
        while (!$this->test($uType, $uValue)) {
            $this->position++;

            if (!isset($this->tokens[$this->position])) {
                return false;
            }
        }

        return true;
    }

    /**
     * Tests the current token for a condition
     *
     * @param  array|integer     $uType
     * @param  array|string|null $uValue
     *
     * @return mixed
     */
    public function test($uType, $uValue = null)
    {
        $tToken = $this->tokens[$this->position];

        if ($uValue !== null) {
            if (is_array($uValue) && !in_array($tToken[1], $uValue)) {
                return false;
            }

            if ($tToken[1] !== $uValue) {
                return false;
            }
        }

        if ($tToken[0] !== $uType) {
            return false;
        }

        return true;
    }

    /**
     * Tests the current token for a condition or throws an exception otherwise
     *
     * @param  array|integer     $uType
     * @param  array|string|null $uValue
     * @param  string|null       $uMessage
     *
     * @throws UnexpectedValueException
     * @return void
     */
    public function expect($uType, $uValue = null, $uMessage = null)
    {
        if (!$this->test($uType, $uValue)) {
            $tToken = $this->tokens[$this->position];

            throw new UnexpectedValueException(sprintf(
                "%sUnexpected token \"%s\" of value \"%s\" (\"%s\" expected%s)",
                $uMessage ? "{$uMessage}. " : "",
                token_name($tToken[0]),
                $tToken[1],
                token_name($uType),
                ($uValue ? sprintf(" with value \"%s\"", $uValue) : "")
            ));
        }
    }
}


1			<?php
2			/**
3			* Scabbia2 Scanners Component
4			* https://github.com/eserozvataf/scabbia2
5			*
6			* For the full copyright and license information, please view the LICENSE
7			* file that was distributed with this source code.
8			*
9			* @link https://github.com/eserozvataf/scabbia2-scanners for the canonical source repository
10			* @copyright 2010-2016 Eser Ozvataf. (http://eser.ozvataf.com/)
11			* @license http://www.apache.org/licenses/LICENSE-2.0 - Apache License, Version 2.0
12			*/
13
14			namespace Scabbia\Scanners;
15
16			use Countable;
17			use Exception;
18			use SeekableIterator;
19			use UnexpectedValueException;
20			use OutOfBoundsException;
21
22			/**
23			* TokenStream
24			*
25			* @package Scabbia\Scanners
26			* @author Eser Ozvataf <[email protected]>
27			* @since 2.0.0
28			*/
29			class TokenStream implements Countable, SeekableIterator
30			{
31			/** @type array $tokens set of tokens */
32			public $tokens = [];
33			/** @type int $position */
34			public $position = 0;
35
36
37			/**
38			* Creates a new tokenstream instance from a code piece
39			*
40			* @param string $uCode the string consists of codes to turned into tokens
41			*
42			* @return TokenStream the new instance
43			*/
44			public static function fromString($uCode)
45			{
46			return new static(token_get_all($uCode));
47			}
48
49			/**
50			* Initializes a token stream
51			*
52			* @param array $uTokens set of tokens
53			*
54			* @return TokenStream
			0 ignored issues – show Comprehensibility Best Practice introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report Adding a `@return` annotation to constructors is generally not recommended as a constructor does not have a meaningful return value. Adding a `@return` annotation to a constructor is not recommended, since a constructor does not have a meaningful return value. Please refer to the PHP core documentation on constructors. Loading history...
55			*/
56			public function __construct(array $uTokens = [])
57			{
58			foreach ($uTokens as $tToken) {
59			if (is_array($tToken)) {
60			$this->tokens[] = [$tToken[0], $tToken[1]];
61			} else {
62			$this->tokens[] = [null, $tToken];
63			}
64			}
65			}
66
67			/**
68			* Count elements of an object
69			*
70			* @return int the count as an integer
71			*/
72			public function count()
73			{
74			return count($this->tokens);
75			}
76
77			/**
78			* Seeks to a position
79			*
80			* @param int $uPosition the position to seek to
81			*
82			* @throws OutOfBoundsException
83			* @return void
84			*/
85			public function seek($uPosition)
86			{
87			if (!isset($this->tokens[$uPosition])) {
88			throw new OutOfBoundsException("invalid seek position ({$uPosition})");
89			}
90
91			$this->position = $uPosition;
92			}
93
94			/**
95			* Rewind the Iterator to the first element
96			*
97			* @return void
98			*/
99			public function rewind()
100			{
101			$this->position = 0;
102			}
103
104			/**
105			* Return the current element
106			*
107			* @return mixed
108			*/
109			public function current()
110			{
111			return $this->tokens[$this->position];
112			}
113
114			/**
115			* Return the key of the current element
116			*
117			* @return int
118			*/
119			public function key()
120			{
121			return $this->position;
122			}
123
124			/**
125			* Move forward to next element
126			*
127			* @return void
128			*/
129			public function next()
130			{
131			$this->position++;
132			}
133
134			/**
135			* Checks if current position is valid
136			*
137			* @return bool true on success or false on failure
138			*/
139			public function valid()
140			{
141			return isset($this->tokens[$this->position]);
142			}
143
144			/**
145			* Move back to previous element
146			*
147			* @return mixed
148			*/
149			public function prev()
150			{
151			$this->position--;
152			}
153
154			/**
155			* Gets next token if condition is true
156			*
157			* @param array\|integer $uType
158			* @param array\|string\|null $uValue
159			*
160			* @return bool
161			*/
162			public function nextIf($uType, $uValue = null)
163			{
164			if ($this->test($uType, $uValue)) {
165			$this->position++;
166			return true;
167			}
168
169			return false;
170			}
171
172			/**
173			* Advances until a token with the given type is found
174			*
175			* @param array\|integer $uType
176			* @param array\|string\|null $uValue
177			*
178			* @return mixed
179			*/
180			public function nextUntil($uType, $uValue = null)
181			{
182			while (!$this->test($uType, $uValue)) {
183			$this->position++;
184
185			if (!isset($this->tokens[$this->position])) {
186			return false;
187			}
188			}
189
190			return true;
191			}
192
193			/**
194			* Tests the current token for a condition
195			*
196			* @param array\|integer $uType
197			* @param array\|string\|null $uValue
198			*
199			* @return mixed
200			*/
201			public function test($uType, $uValue = null)
202			{
203			$tToken = $this->tokens[$this->position];
204
205			if ($uValue !== null) {
206			if (is_array($uValue) && !in_array($tToken[1], $uValue)) {
207			return false;
208			}
209
210			if ($tToken[1] !== $uValue) {
211			return false;
212			}
213			}
214
215			if ($tToken[0] !== $uType) {
216			return false;
217			}
218
219			return true;
220			}
221
222			/**
223			* Tests the current token for a condition or throws an exception otherwise
224			*
225			* @param array\|integer $uType
226			* @param array\|string\|null $uValue
227			* @param string\|null $uMessage
228			*
229			* @throws UnexpectedValueException
230			* @return void
231			*/
232			public function expect($uType, $uValue = null, $uMessage = null)
233			{
234			if (!$this->test($uType, $uValue)) {
235			$tToken = $this->tokens[$this->position];
236
237			throw new UnexpectedValueException(sprintf(
238			"%sUnexpected token \"%s\" of value \"%s\" (\"%s\" expected%s)",
239			$uMessage ? "{$uMessage}. " : "",
240			token_name($tToken[0]),
241			$tToken[1],
242			token_name($uType),
243			($uValue ? sprintf(" with value \"%s\"", $uValue) : "")
244			));
245			}
246			}
247			}
248

eserozvataf / scabbia2-scanners

TokenStream::prev() A last analyzed 2016-01-03 14:58 UTC

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TokenStream::prev() A
last analyzed 2016-01-03 14:58 UTC