TokenParser::parseUseStatement() - Code Metrics - Inspection of "master is now 1.9.x-dev" - doctrine/annotations - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 8a6821...f9deab )

by Andreas

created 2020-04-01 11:21 UTC

TokenParser::parseUseStatement() C

↳ Parent: TokenParser

Complexity

Conditions	12
Paths	13

Size

Total Lines	37
Code Lines	31

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	12
eloc	31
nc	13
nop	0
dl	0
loc	37
rs	6.9666
c	2
b	0
f	0

How to fix Complexity

<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\Common\Annotations;

/**
 * Parses a file for namespaces/use/class declarations.
 *
 * @author Fabien Potencier <[email protected]>
 * @author Christian Kaps <[email protected]>
 */
class TokenParser
{
    /**
     * The token list.
     *
     * @var array
     */
    private $tokens;

    /**
     * The number of tokens.
     *
     * @var int
     */
    private $numTokens;

    /**
     * The current array pointer.
     *
     * @var int
     */
    private $pointer = 0;

    /**
     * @param string $contents
     */
    public function __construct($contents)
    {
        $this->tokens = token_get_all($contents);

        // The PHP parser sets internal compiler globals for certain things. Annoyingly, the last docblock comment it
        // saw gets stored in doc_comment. When it comes to compile the next thing to be include()d this stored
        // doc_comment becomes owned by the first thing the compiler sees in the file that it considers might have a
        // docblock. If the first thing in the file is a class without a doc block this would cause calls to
        // getDocBlock() on said class to return our long lost doc_comment. Argh.
        // To workaround, cause the parser to parse an empty docblock. Sure getDocBlock() will return this, but at least
        // it's harmless to us.
        token_get_all("<?php\n/**\n *\n */");

        $this->numTokens = count($this->tokens);
    }

    /**
     * Gets the next non whitespace and non comment token.
     *
     * @param boolean $docCommentIsComment If TRUE then a doc comment is considered a comment and skipped.
     *                                     If FALSE then only whitespace and normal comments are skipped.
     *
     * @return array|null The token if exists, null otherwise.
     */
    public function next($docCommentIsComment = TRUE)
    {
        for ($i = $this->pointer; $i < $this->numTokens; $i++) {
            $this->pointer++;
            if ($this->tokens[$i][0] === T_WHITESPACE ||
                $this->tokens[$i][0] === T_COMMENT ||
                ($docCommentIsComment && $this->tokens[$i][0] === T_DOC_COMMENT)) {

                continue;
            }

            return $this->tokens[$i];
        }

        return null;
    }

    /**
     * Parses a single use statement.
     *
     * @return array A list with all found class names for a use statement.
     */
    public function parseUseStatement()
    {

        $groupRoot = '';
        $class = '';
        $alias = '';
        $statements = [];
        $explicitAlias = false;
        while (($token = $this->next())) {
            $isNameToken = $token[0] === T_STRING || $token[0] === T_NS_SEPARATOR;
            if (!$explicitAlias && $isNameToken) {
                $class .= $token[1];
                $alias = $token[1];
            } else if ($explicitAlias && $isNameToken) {
                $alias .= $token[1];
            } else if ($token[0] === T_AS) {
                $explicitAlias = true;
                $alias = '';
            } else if ($token === ',') {
                $statements[strtolower($alias)] = $groupRoot . $class;
                $class = '';
                $alias = '';
                $explicitAlias = false;
            } else if ($token === ';') {
                $statements[strtolower($alias)] = $groupRoot . $class;
                break;
            } else if ($token === '{' ) {
                $groupRoot = $class;
                $class = '';
            } else if ($token === '}' ) {
                continue;
            } else {
                break;
            }
        }

        return $statements;
    }

    /**
     * Gets all use statements.
     *
     * @param string $namespaceName The namespace name of the reflected class.
     *
     * @return array A list with all found use statements.
     */
    public function parseUseStatements($namespaceName)
    {
        $statements = [];
        while (($token = $this->next())) {
            if ($token[0] === T_USE) {
                $statements = array_merge($statements, $this->parseUseStatement());
                continue;
            }
            if ($token[0] !== T_NAMESPACE || $this->parseNamespace() != $namespaceName) {
                continue;
            }

            // Get fresh array for new namespace. This is to prevent the parser to collect the use statements
            // for a previous namespace with the same name. This is the case if a namespace is defined twice
            // or if a namespace with the same name is commented out.
            $statements = [];
        }

        return $statements;
    }

    /**
     * Gets the namespace.
     *
     * @return string The found namespace.
     */
    public function parseNamespace()
    {
        $name = '';
        while (($token = $this->next()) && ($token[0] === T_STRING || $token[0] === T_NS_SEPARATOR)) {
            $name .= $token[1];
        }

        return $name;
    }

    /**
     * Gets the class name.
     *
     * @return string The found class name.
     */
    public function parseClass()
    {
        // Namespaces and class names are tokenized the same: T_STRINGs
        // separated by T_NS_SEPARATOR so we can use one function to provide
        // both.
        return $this->parseNamespace();
    }
}


1			<?php
2			/*
3			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4			* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5			* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
6			* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
7			* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
8			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
9			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
10			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
11			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
12			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
13			* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
14			*
15			* This software consists of voluntary contributions made by many individuals
16			* and is licensed under the MIT license. For more information, see
17			* <http://www.doctrine-project.org>.
18			*/
19
20			namespace Doctrine\Common\Annotations;
21
22			/**
23			* Parses a file for namespaces/use/class declarations.
24			*
25			* @author Fabien Potencier <[email protected]>
26			* @author Christian Kaps <[email protected]>
27			*/
28			class TokenParser
29			{
30			/**
31			* The token list.
32			*
33			* @var array
34			*/
35			private $tokens;
36
37			/**
38			* The number of tokens.
39			*
40			* @var int
41			*/
42			private $numTokens;
43
44			/**
45			* The current array pointer.
46			*
47			* @var int
48			*/
49			private $pointer = 0;
50
51			/**
52			* @param string $contents
53			*/
54			public function __construct($contents)
55			{
56			$this->tokens = token_get_all($contents);
57
58			// The PHP parser sets internal compiler globals for certain things. Annoyingly, the last docblock comment it
59			// saw gets stored in doc_comment. When it comes to compile the next thing to be include()d this stored
60			// doc_comment becomes owned by the first thing the compiler sees in the file that it considers might have a
61			// docblock. If the first thing in the file is a class without a doc block this would cause calls to
62			// getDocBlock() on said class to return our long lost doc_comment. Argh.
63			// To workaround, cause the parser to parse an empty docblock. Sure getDocBlock() will return this, but at least
64			// it's harmless to us.
65			token_get_all("<?php\n/*\n \n */");
66
67			$this->numTokens = count($this->tokens);
68			}
69
70			/**
71			* Gets the next non whitespace and non comment token.
72			*
73			* @param boolean $docCommentIsComment If TRUE then a doc comment is considered a comment and skipped.
74			* If FALSE then only whitespace and normal comments are skipped.
75			*
76			* @return array\|null The token if exists, null otherwise.
77			*/
78			public function next($docCommentIsComment = TRUE)
79			{
80			for ($i = $this->pointer; $i < $this->numTokens; $i++) {
81			$this->pointer++;
82			if ($this->tokens[$i][0] === T_WHITESPACE \|\|
83			$this->tokens[$i][0] === T_COMMENT \|\|
84			($docCommentIsComment && $this->tokens[$i][0] === T_DOC_COMMENT)) {
85
86			continue;
87			}
88
89			return $this->tokens[$i];
90			}
91
92			return null;
93			}
94
95			/**
96			* Parses a single use statement.
97			*
98			* @return array A list with all found class names for a use statement.
99			*/
100			public function parseUseStatement()
101			{
102
103			$groupRoot = '';
104			$class = '';
105			$alias = '';
106			$statements = [];
107			$explicitAlias = false;
108			while (($token = $this->next())) {
109			$isNameToken = $token[0] === T_STRING \|\| $token[0] === T_NS_SEPARATOR;
110			if (!$explicitAlias && $isNameToken) {
111			$class .= $token[1];
112			$alias = $token[1];
113			} else if ($explicitAlias && $isNameToken) {
114			$alias .= $token[1];
115			} else if ($token[0] === T_AS) {
116			$explicitAlias = true;
117			$alias = '';
118			} else if ($token === ',') {
119			$statements[strtolower($alias)] = $groupRoot . $class;
120			$class = '';
121			$alias = '';
122			$explicitAlias = false;
123			} else if ($token === ';') {
124			$statements[strtolower($alias)] = $groupRoot . $class;
125			break;
126			} else if ($token === '{' ) {
127			$groupRoot = $class;
128			$class = '';
129			} else if ($token === '}' ) {
130			continue;
131			} else {
132			break;
133			}
134			}
135
136			return $statements;
137			}
138
139			/**
140			* Gets all use statements.
141			*
142			* @param string $namespaceName The namespace name of the reflected class.
143			*
144			* @return array A list with all found use statements.
145			*/
146			public function parseUseStatements($namespaceName)
147			{
148			$statements = [];
149			while (($token = $this->next())) {
150			if ($token[0] === T_USE) {
151			$statements = array_merge($statements, $this->parseUseStatement());
152			continue;
153			}
154			if ($token[0] !== T_NAMESPACE \|\| $this->parseNamespace() != $namespaceName) {
155			continue;
156			}
157
158			// Get fresh array for new namespace. This is to prevent the parser to collect the use statements
159			// for a previous namespace with the same name. This is the case if a namespace is defined twice
160			// or if a namespace with the same name is commented out.
161			$statements = [];
162			}
163
164			return $statements;
165			}
166
167			/**
168			* Gets the namespace.
169			*
170			* @return string The found namespace.
171			*/
172			public function parseNamespace()
173			{
174			$name = '';
175			while (($token = $this->next()) && ($token[0] === T_STRING \|\| $token[0] === T_NS_SEPARATOR)) {
176			$name .= $token[1];
177			}
178
179			return $name;
180			}
181
182			/**
183			* Gets the class name.
184			*
185			* @return string The found class name.
186			*/
187			public function parseClass()
188			{
189			// Namespaces and class names are tokenized the same: T_STRINGs
190			// separated by T_NS_SEPARATOR so we can use one function to provide
191			// both.
192			return $this->parseNamespace();
193			}
194			}
195

doctrine / annotations

Push — master ( 8a6821...f9deab )

TokenParser::parseUseStatement() C

Complexity

Size

Duplication

Importance

How to fix Complexity

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