AbstractJsonEncoder::isAssociative() - Code Metrics - Inspection of "Change object encoding decision" - violet-php/streaming-json-encoder - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 8c492d...2143ab )

by Riikka

created 2017-06-17 15:15 UTC

AbstractJsonEncoder::isAssociative() A

↳ Parent: AbstractJsonEncoder

Complexity

Conditions	4
Paths	4

Size

Total Lines	16
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	4

Importance

Changes

Metric	Value
dl	0
loc	16
ccs	7
cts	7
cp	1
rs	9.2
c	0
b	0
f	0
cc	4
eloc	8
nc	4
nop	1
crap	4

<?php

namespace Violet\StreamingJsonEncoder;

/**
 * Abstract encoder for encoding JSON iteratively.
 *
 * @author Riikka Kalliomäki <[email protected]>
 * @copyright Copyright (c) 2016, Riikka Kalliomäki
 * @license http://opensource.org/licenses/mit-license.php MIT License
 */
abstract class AbstractJsonEncoder implements \Iterator
{
    /** @var \Iterator[] Current value stack in encoding */
    private $stack;

    /** @var bool[] True for every object in the stack, false for an array */
    private $stackType;

    /** @var array Stack of values being encoded */
    private $valueStack;

    /** @var bool Whether the next value is the first value in an array or an object */
    private $first;

    /** @var int The JSON encoding options */
    private $options;

    /** @var bool Whether next token should be preceded by new line or not */
    private $newLine;

    /** @var string Indent to use for indenting JSON output */
    private $indent;

    /** @var string[] Errors that occurred in encoding */
    private $errors;

    /** @var int Number of the current line in output */
    private $line;

    /** @var int Number of the current column in output */
    private $column;

    /** @var mixed The initial value to encode as JSON */
    private $initialValue;

    /** @var int|null The current step of the encoder */
    private $step;

    /**
     * AbstractJsonEncoder constructor.
     * @param mixed $value The value to encode as JSON
     */
    public function __construct($value)
    {
        $this->initialValue = $value;
        $this->options = 0;
        $this->errors = [];
        $this->indent = '    ';
    }

    /**
     * Sets the JSON encoding options.
     * @param int $options The JSON encoding options that are used by json_encode
     * @return $this Returns self for call chaining
     * @throws \RuntimeException If changing encoding options during encoding operation
     */
    public function setOptions($options)
    {
        if ($this->step !== null) {
            throw new \RuntimeException('Cannot change encoding options during encoding');
        }

        $this->options = (int) $options;
        return $this;
    }

    /**
     * Sets the indent for the JSON output.
     * @param string|int $indent A string to use as indent or the number of spaces
     * @return $this Returns self for call chaining
     * @throws \RuntimeException If changing indent during encoding operation
     */
    public function setIndent($indent)
    {
        if ($this->step !== null) {
            throw new \RuntimeException('Cannot change indent during encoding');
        }

        $this->indent = is_int($indent) ? str_repeat(' ', $indent) : (string) $indent;
        return $this;
    }

    /**
     * Returns the list of errors that occurred during the last encoding process.
     * @return string[] List of errors that occurred during encoding
     */
    public function getErrors()
    {
        return $this->errors;
    }

    /**
     * Returns the current encoding value stack.
     * @return array The current encoding value stack
     */
    protected function getValueStack()
    {
        return $this->valueStack;
    }

    /**
     * Initializes the iterator if it has not been initialized yet.
     */
    private function initialize()
    {
        if (!isset($this->stack)) {
            $this->rewind();
        }
    }

    /**
     * Returns the current number of step in the encoder.
     * @return mixed The current step number as integer or null if the current state is not valid

     */
    public function key()
    {
        $this->initialize();

        return $this->step;
    }

    /**
     * Tells if the encoder has a valid current state.
     * @return bool True if the iterator has a valid state, false if not
     */
    public function valid()
    {
        $this->initialize();

        return $this->step !== null;
    }

    /**
     * Returns the current value or state from the encoder.
     * @return mixed The current value or state from the encoder
     */
    abstract public function current();

    /**
     * Returns the JSON encoding to the beginning.
     */
    public function rewind()
    {
        if ($this->step === 0) {
            return;
        }

        $this->stack = [];
        $this->stackType = [];
        $this->valueStack = [];
        $this->errors = [];
        $this->newLine = false;
        $this->first = true;
        $this->line = 1;
        $this->column = 1;
        $this->step = 0;

        $this->processValue($this->initialValue);
    }

    /**
     * Iterates the next token or tokens to the output stream.
     */
    public function next()
    {
        $this->initialize();

        if (!empty($this->stack)) {
            $this->step++;
            $iterator = end($this->stack);

            if ($iterator->valid()) {
                $this->processStack($iterator, end($this->stackType));
<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}
                $iterator->next();
            } else {
                $this->popStack();
            }
        } else {
            $this->step = null;
        }
    }

    /**
     * Handles the next value from the iterator to be encoded as JSON.
     * @param \Iterator $iterator The iterator used to generate the next value
     * @param bool $isObject True if the iterator is being handled as an object, false if not
     */
    private function processStack(\Iterator $iterator, $isObject)
    {
        if ($isObject) {
            if (!$this->processKey($iterator->key())) {
                return;
            }
        } elseif (!$this->first) {
            $this->outputLine(',', JsonToken::T_COMMA);
        }

        $this->first = false;
        $this->processValue($iterator->current());
    }

    /**
     * Handles the given value key into JSON.
     * @param mixed $key The key to process
     * @return bool True if the key is valid, false if not
     */
    private function processKey($key)
    {
        if (!is_int($key) && !is_string($key)) {
            $this->addError('Only string or integer keys are supported');
            return false;
        }

        if (!$this->first) {
            $this->outputLine(',', JsonToken::T_COMMA);
        }

        $this->outputJson((string) $key, JsonToken::T_NAME);
        $this->output(':', JsonToken::T_COLON);

        if ($this->options & JSON_PRETTY_PRINT) {
            $this->output(' ', JsonToken::T_WHITESPACE);
        }

        return true;
    }

    /**
     * Handles the given JSON value appropriately depending on it's type.
     * @param mixed $value The value that should be encoded as JSON
     */
    private function processValue($value)
    {
        $this->valueStack[] = $value;
        $value = $this->resolveValue($value);

        if (is_array($value) || is_object($value)) {
            $this->pushStack($value);
        } else {
            $this->outputJson($value, JsonToken::T_VALUE);
            array_pop($this->valueStack);
        }
    }

    /**
     * Resolves the actual value of any given value that is about to be processed.
     * @param mixed $value The value to resolve
     * @return mixed The resolved value
     */
    protected function resolveValue($value)
    {
        do {
            if ($value instanceof \JsonSerializable) {
                $value = $value->jsonSerialize();
            } elseif ($value instanceof \Closure) {
                $value = $value();
            } else {
                return $value;
            }
        } while (true);
    }

    /**
     * Adds an JSON encoding error to the list of errors.
     * @param string $message The error message to add
     * @throws EncodingException If the encoding should not continue due to the error
     */
    private function addError($message)
    {
        $errorMessage = sprintf('Line %d, column %d: %s', $this->line, $this->column, $message);
        $this->errors[] = $errorMessage;

        if ($this->options & JSON_PARTIAL_OUTPUT_ON_ERROR) {
            return;
        }

        $this->stack = [];
        $this->step = null;

        throw new EncodingException($errorMessage);
    }

    /**
     * Pushes the given iterable to the value stack.
     * @param object|array $iterable The iterable value to push to the stack
     */
    private function pushStack($iterable)
    {
        $iterator = $this->getIterator($iterable);
        $isObject = $this->isObject($iterable, $iterator);

        if ($isObject) {
            $this->outputLine('{', JsonToken::T_LEFT_BRACE);
        } else {
            $this->outputLine('[', JsonToken::T_LEFT_BRACKET);
        }

        $this->first = true;
        $this->stack[] = $iterator;
        $this->stackType[] = $isObject;
    }

    /**
     * Creates a generator from the given iterable using a foreach loop.
     * @param object|array $iterable The iterable value to iterate
     * @return \Generator The generator using the given iterable
     */
    private function getIterator($iterable)
    {
        foreach ($iterable as $key => $value) {
            yield $key => $value;
        }
    }

    /**
     * Tells if the given iterable should be handled as a JSON object or not.
     * @param object|array $iterable The iterable value to test
     * @param \Iterator $iterator An Iterator created from the iterable value
     * @return bool True if the given iterable should be treated as object, false if not
     */
    private function isObject($iterable, \Iterator $iterator)
    {
        if ($this->options & JSON_FORCE_OBJECT) {
            return true;
        }

        if ($iterable instanceof \Traversable) {
            return $iterator->valid() && $iterator->key() !== 0;
        }

        return is_object($iterable) || $this->isAssociative($iterable);
    }

    /**
     * Tells if the given array is an associative array.
     * @param array $array The array to test
     * @return bool True if the array is associative, false if not
     */
    private function isAssociative(array $array)
    {
        if ($array === []) {
            return false;
        }

        $expected = 0;

        foreach ($array as $key => $_) {
            if ($key !== $expected++) {
                return true;
            }
        }

        return false;
    }

    /**
     * Removes the top element of the value stack.
     */
    private function popStack()
    {
        if (!$this->first) {
            $this->newLine = true;
        }

        $this->first = false;
        array_pop($this->stack);

        if (array_pop($this->stackType)) {
            $this->output('}', JsonToken::T_RIGHT_BRACE);
        } else {
            $this->output(']', JsonToken::T_RIGHT_BRACKET);
        }

        array_pop($this->valueStack);
    }

    /**
     * Encodes the given value as JSON and passes it to output stream.
     * @param mixed $value The value to output as JSON
     * @param int $token The token type of the value
     */
    private function outputJson($value, $token)
    {
        $encoded = json_encode($value, $this->options);
        $error = json_last_error();

        if ($error !== JSON_ERROR_NONE) {
            $this->addError(sprintf('%s (%s)', json_last_error_msg(), $this->getJsonErrorName($error)));
        }

        $this->output($encoded, $token);
    }

    /**
     * Returns the name of the JSON error constant.
     * @param int $error The error code to find
     * @return string The name for the error code

     */
    private function getJsonErrorName($error)
    {
        $matches = array_keys(get_defined_constants(), $error, true);
        $prefix = 'JSON_ERROR_';
        $prefixLength = strlen($prefix);

        foreach ($matches as $match) {
            if (strncmp($match, $prefix, $prefixLength) === 0) {
                return $match;
            }
        }
    }

    /**
     * Passes the given token to the output stream and ensures the next token is preceded by a newline.
     * @param string $string The token to write to the output stream
     * @param int $token The type of the token
     */
    private function outputLine($string, $token)
    {
        $this->output($string, $token);
        $this->newLine = true;
    }

    /**
     * Passes the given token to the output stream.
     * @param string $string The token to write to the output stream
     * @param int $token The type of the token
     */
    private function output($string, $token)
    {
        if ($this->newLine && $this->options & JSON_PRETTY_PRINT) {
            $indent = str_repeat($this->indent, count($this->stack));
            $this->write("\n", JsonToken::T_WHITESPACE);

            if ($indent !== '') {
                $this->write($indent, JsonToken::T_WHITESPACE);
            }

            $this->line++;
            $this->column = strlen($indent) + 1;
        }

        $this->newLine = false;
        $this->write($string, $token);
        $this->column += strlen($string);
    }

    /**
     * Actually handles the writing of the given token to the output stream.
     * @param string $string The given token to write
     * @param int $token The type of the token
     * @return void
     */
    abstract protected function write($string, $token);
}


1		<?php
2
3		namespace Violet\StreamingJsonEncoder;
4
5		/**
6		* Abstract encoder for encoding JSON iteratively.
7		*
8		* @author Riikka Kalliomäki <[email protected]>
9		* @copyright Copyright (c) 2016, Riikka Kalliomäki
10		* @license http://opensource.org/licenses/mit-license.php MIT License
11		*/
12		abstract class AbstractJsonEncoder implements \Iterator
13		{
14		/** @var \Iterator[] Current value stack in encoding */
15		private $stack;
16
17		/** @var bool[] True for every object in the stack, false for an array */
18		private $stackType;
19
20		/** @var array Stack of values being encoded */
21		private $valueStack;
22
23		/** @var bool Whether the next value is the first value in an array or an object */
24		private $first;
25
26		/** @var int The JSON encoding options */
27		private $options;
28
29		/** @var bool Whether next token should be preceded by new line or not */
30		private $newLine;
31
32		/** @var string Indent to use for indenting JSON output */
33		private $indent;
34
35		/** @var string[] Errors that occurred in encoding */
36		private $errors;
37
38		/** @var int Number of the current line in output */
39		private $line;
40
41		/** @var int Number of the current column in output */
42		private $column;
43
44		/** @var mixed The initial value to encode as JSON */
45		private $initialValue;
46
47		/** @var int\|null The current step of the encoder */
48		private $step;
49
50		/**
51	108	* AbstractJsonEncoder constructor.
52		* @param mixed $value The value to encode as JSON
53	108	*/
54	108	public function __construct($value)
55	108	{
56	108	$this->initialValue = $value;
57	108	$this->options = 0;
58	36	$this->errors = [];
59		$this->indent = ' ';
60		}
61
62		/**
63		* Sets the JSON encoding options.
64		* @param int $options The JSON encoding options that are used by json_encode
65	69	* @return $this Returns self for call chaining
66		* @throws \RuntimeException If changing encoding options during encoding operation
67	69	*/
68	3	public function setOptions($options)
69		{
70		if ($this->step !== null) {
71	66	throw new \RuntimeException('Cannot change encoding options during encoding');
72	66	}
73
74		$this->options = (int) $options;
75		return $this;
76		}
77
78		/**
79		* Sets the indent for the JSON output.
80	39	* @param string\|int $indent A string to use as indent or the number of spaces
81		* @return $this Returns self for call chaining
82	39	* @throws \RuntimeException If changing indent during encoding operation
83	3	*/
84		public function setIndent($indent)
85		{
86	36	if ($this->step !== null) {
87	36	throw new \RuntimeException('Cannot change indent during encoding');
88		}
89
90		$this->indent = is_int($indent) ? str_repeat(' ', $indent) : (string) $indent;
91		return $this;
92		}
93
94	6	/**
95		* Returns the list of errors that occurred during the last encoding process.
96	6	* @return string[] List of errors that occurred during encoding
97		*/
98		public function getErrors()
99		{
100		return $this->errors;
101		}
102	81
103		/**
104	81	* Returns the current encoding value stack.
105	3	* @return array The current encoding value stack
106	1	*/
107	27	protected function getValueStack()
108		{
109		return $this->valueStack;
110		}
111
112		/**
113	6	* Initializes the iterator if it has not been initialized yet.
114		*/
115	6	private function initialize()
116		{
117	6	if (!isset($this->stack)) {
118		$this->rewind();
119		}
120		}
121
122		/**
123		* Returns the current number of step in the encoder.
124	78	* @return mixed The current step number as integer or null if the current state is not valid
		0 ignored issues – show Documentation introduced 2017-02-26 12:10 UTC by Report Bug Copy Issue Report Consider making the return type a bit more specific; maybe use `integer\|null`. This check looks for the generic type `array` as a return type and suggests a more specific type. This type is inferred from the actual code. Loading history...
125		*/
126	78	public function key()
127		{
128	78	$this->initialize();
129
130		return $this->step;
131		}
132
133		/**
134		* Tells if the encoder has a valid current state.
135		* @return bool True if the iterator has a valid state, false if not
136		*/
137		public function valid()
138		{
139		$this->initialize();
140	108
141		return $this->step !== null;
142	108	}
143	3
144		/**
145		* Returns the current value or state from the encoder.
146	108	* @return mixed The current value or state from the encoder
147	108	*/
148	108	abstract public function current();
149	108
150	108	/**
151	108	* Returns the JSON encoding to the beginning.
152	108	*/
153	108	public function rewind()
154		{
155	108	if ($this->step === 0) {
156	35	return;
157		}
158
159		$this->stack = [];
160		$this->stackType = [];
161	78	$this->valueStack = [];
162		$this->errors = [];
163	78	$this->newLine = false;
164		$this->first = true;
165	78	$this->line = 1;
166	57	$this->column = 1;
167	57	$this->step = 0;
168
169	57	$this->processValue($this->initialValue);
170	51	}
171	51
172	17	/**
173	55	* Iterates the next token or tokens to the output stream.
174		*/
175	19	public function next()
176	75	{
177		$this->initialize();
178	52
179		if (!empty($this->stack)) {
180		$this->step++;
181		$iterator = end($this->stack);
182
183		if ($iterator->valid()) {
184		$this->processStack($iterator, end($this->stackType));
		0 ignored issues – show Security Bug introduced 2017-06-17 15:26 UTC by Report Bug Copy Issue Report It seems like `$iterator` defined by `end($this->stack)` on line `181` can also be of type `false`; however, `Violet\StreamingJsonEnco...Encoder::processStack()` does only seem to accept `object<Iterator>`, did you maybe forget to handle an error condition? This check looks for type mismatches where the missing type is `false`. This is usually indicative of an error condtion. Consider the follow example <?php function getDate($date) { if ($date !== null) { return new DateTime($date); } return false; } This function either returns a new `DateTime` object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returned `false` before passing on the value to another function or method that may not be able to handle a `false`. Loading history...
185	51	$iterator->next();
186		} else {
187	51	$this->popStack();
188	30	}
189	12	} else {
190		$this->step = null;
191	35	}
192	18	}
193	6
194		/**
195	51	* Handles the next value from the iterator to be encoded as JSON.
196	51	* @param \Iterator $iterator The iterator used to generate the next value
197	17	* @param bool $isObject True if the iterator is being handled as an object, false if not
198		*/
199		private function processStack(\Iterator $iterator, $isObject)
200		{
201		if ($isObject) {
202		if (!$this->processKey($iterator->key())) {
203		return;
204	30	}
205		} elseif (!$this->first) {
206	30	$this->outputLine(',', JsonToken::T_COMMA);
207	3	}
208	3
209		$this->first = false;
210		$this->processValue($iterator->current());
211	30	}
212	18
213	6	/**
214		* Handles the given value key into JSON.
215	30	* @param mixed $key The key to process
216	30	* @return bool True if the key is valid, false if not
217		*/
218	30	private function processKey($key)
219	6	{
220	2	if (!is_int($key) && !is_string($key)) {
221		$this->addError('Only string or integer keys are supported');
222	30	return false;
223		}
224
225		if (!$this->first) {
226		$this->outputLine(',', JsonToken::T_COMMA);
227		}
228
229	108	$this->outputJson((string) $key, JsonToken::T_NAME);
230		$this->output(':', JsonToken::T_COLON);
231	108
232	6	if ($this->options & JSON_PRETTY_PRINT) {
233	3	$this->output(' ', JsonToken::T_WHITESPACE);
234	4	}
235	3
236	1	return true;
237	2	}
238
239	108	/**
240	57	* Handles the given JSON value appropriately depending on it's type.
241	19	* @param mixed $value The value that should be encoded as JSON
242	102	*/
243		private function processValue($value)
244	70	{
245		$this->valueStack[] = $value;
246		$value = $this->resolveValue($value);
247
248		if (is_array($value) \|\| is_object($value)) {
249		$this->pushStack($value);
250		} else {
251	108	$this->outputJson($value, JsonToken::T_VALUE);
252		array_pop($this->valueStack);
253	108	}
254		}
255
256		/**
257		* Resolves the actual value of any given value that is about to be processed.
258		* @param mixed $value The value to resolve
259		* @return mixed The resolved value
260		*/
261	9	protected function resolveValue($value)
262		{
263	9	do {
264	9	if ($value instanceof \JsonSerializable) {
265		$value = $value->jsonSerialize();
266	9	} elseif ($value instanceof \Closure) {
267	3	$value = $value();
268		} else {
269		return $value;
270	6	}
271	6	} while (true);
272		}
273	6
274		/**
275		* Adds an JSON encoding error to the list of errors.
276		* @param string $message The error message to add
277		* @throws EncodingException If the encoding should not continue due to the error
278		*/
279		private function addError($message)
280	57	{
281		$errorMessage = sprintf('Line %d, column %d: %s', $this->line, $this->column, $message);
282	57	$this->errors[] = $errorMessage;
283	57
284		if ($this->options & JSON_PARTIAL_OUTPUT_ON_ERROR) {
285	57	return;
286	30	}
287	10
288	33	$this->stack = [];
289		$this->step = null;
290
291	57	throw new EncodingException($errorMessage);
292	57	}
293	57
294	19	/**
295		* Pushes the given iterable to the value stack.
296		* @param object\|array $iterable The iterable value to push to the stack
297		*/
298		private function pushStack($iterable)
299		{
300		$iterator = $this->getIterator($iterable);
301	57	$isObject = $this->isObject($iterable, $iterator);
302
303	57	if ($isObject) {
304	53	$this->outputLine('{', JsonToken::T_LEFT_BRACE);
305	19	} else {
306	18	$this->outputLine('[', JsonToken::T_LEFT_BRACKET);
307		}
308
309		$this->first = true;
310		$this->stack[] = $iterator;
311		$this->stackType[] = $isObject;
312		}
313
314	57	/**
315		* Creates a generator from the given iterable using a foreach loop.
316	57	* @param object\|array $iterable The iterable value to iterate
317	3	* @return \Generator The generator using the given iterable
318	54	*/
319	45	private function getIterator($iterable)
320		{
321		foreach ($iterable as $key => $value) {
322	12	yield $key => $value;
323		}
324		}
325
326		/**
327		* Tells if the given iterable should be handled as a JSON object or not.
328	54	* @param object\|array $iterable The iterable value to test
329		* @param \Iterator $iterator An Iterator created from the iterable value
330	54	* @return bool True if the given iterable should be treated as object, false if not
331	48	*/
332	16	private function isObject($iterable, \Iterator $iterator)
333		{
334	54	if ($this->options & JSON_FORCE_OBJECT) {
335	54	return true;
336		}
337	54
338	30	if ($iterable instanceof \Traversable) {
339	10	return $iterator->valid() && $iterator->key() !== 0;
340	30	}
341
342	36	return is_object($iterable) \|\| $this->isAssociative($iterable);
343		}
344
345		/**
346		* Tells if the given array is an associative array.
347		* @param array $array The array to test
348		* @return bool True if the array is associative, false if not
349	102	*/
350		private function isAssociative(array $array)
351	102	{
352		if ($array === []) {
353	102	return false;
354	9	}
355	1
356		$expected = 0;
357	99
358	33	foreach ($array as $key => $_) {
359		if ($key !== $expected++) {
360		return true;
361		}
362		}
363
364		return false;
365	57	}
366
367	57	/**
368	57	* Removes the top element of the value stack.
369	19	*/
370		private function popStack()
371		{
372		if (!$this->first) {
373		$this->newLine = true;
374		}
375
376	105	$this->first = false;
377		array_pop($this->stack);
378	105
379	15	if (array_pop($this->stackType)) {
380	15	$this->output('}', JsonToken::T_RIGHT_BRACE);
381		} else {
382	15	$this->output(']', JsonToken::T_RIGHT_BRACKET);
383	15	}
384	5
385		array_pop($this->valueStack);
386	15	}
387	15
388	5	/**
389		* Encodes the given value as JSON and passes it to output stream.
390	105	* @param mixed $value The value to output as JSON
391	105	* @param int $token The token type of the value
392	105	*/
393	35	private function outputJson($value, $token)
394		{
395		$encoded = json_encode($value, $this->options);
396		$error = json_last_error();
397
398		if ($error !== JSON_ERROR_NONE) {
399		$this->addError(sprintf('%s (%s)', json_last_error_msg(), $this->getJsonErrorName($error)));
400		}
401
402		$this->output($encoded, $token);
403		}
404
405		/**
406		* Returns the name of the JSON error constant.
407		* @param int $error The error code to find
408		* @return string The name for the error code
		0 ignored issues – show Documentation introduced 2017-06-17 15:26 UTC by Report Bug Copy Issue Report Should the return type not be `integer\|string\|null`? This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. Loading history...
409		*/
410		private function getJsonErrorName($error)
411		{
412		$matches = array_keys(get_defined_constants(), $error, true);
413		$prefix = 'JSON_ERROR_';
414		$prefixLength = strlen($prefix);
415
416		foreach ($matches as $match) {
417		if (strncmp($match, $prefix, $prefixLength) === 0) {
418		return $match;
419		}
420		}
421		}
422
423		/**
424		* Passes the given token to the output stream and ensures the next token is preceded by a newline.
425		* @param string $string The token to write to the output stream
426		* @param int $token The type of the token
427		*/
428		private function outputLine($string, $token)
429		{
430		$this->output($string, $token);
431		$this->newLine = true;
432		}
433
434		/**
435		* Passes the given token to the output stream.
436		* @param string $string The token to write to the output stream
437		* @param int $token The type of the token
438		*/
439		private function output($string, $token)
440		{
441		if ($this->newLine && $this->options & JSON_PRETTY_PRINT) {
442		$indent = str_repeat($this->indent, count($this->stack));
443		$this->write("\n", JsonToken::T_WHITESPACE);
444
445		if ($indent !== '') {
446		$this->write($indent, JsonToken::T_WHITESPACE);
447		}
448
449		$this->line++;
450		$this->column = strlen($indent) + 1;
451		}
452
453		$this->newLine = false;
454		$this->write($string, $token);
455		$this->column += strlen($string);
456		}
457
458		/**
459		* Actually handles the writing of the given token to the output stream.
460		* @param string $string The given token to write
461		* @param int $token The type of the token
462		* @return void
463		*/
464		abstract protected function write($string, $token);
465		}
466

violet-php / streaming-json-encoder

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AbstractJsonEncoder::isAssociative() A

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