DocParser.php in Drupal 8
Same filename and directory in other branches
This class is a near-copy of Doctrine\Common\Annotations\DocParser, which is part of the Doctrine project: <http://www.doctrine-project.org>. It was copied from version 1.2.7.
Original copyright:
Copyright (c) 2006-2013 Doctrine Project
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
Namespace
Drupal\Component\Annotation\DoctrineFile
core/lib/Drupal/Component/Annotation/Doctrine/DocParser.phpView source
<?php
// @codingStandardsIgnoreFile
/**
* @file
*
* This class is a near-copy of Doctrine\Common\Annotations\DocParser, which is
* part of the Doctrine project: <http://www.doctrine-project.org>. It was
* copied from version 1.2.7.
*
* Original copyright:
*
* Copyright (c) 2006-2013 Doctrine Project
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*/
namespace Drupal\Component\Annotation\Doctrine;
use Doctrine\Common\Annotations\Annotation\Attribute;
use Doctrine\Common\Annotations\Annotation\Enum;
use Doctrine\Common\Annotations\Annotation\Target;
use Doctrine\Common\Annotations\Annotation\Attributes;
use Doctrine\Common\Annotations\AnnotationException;
use Doctrine\Common\Annotations\AnnotationRegistry;
use Doctrine\Common\Annotations\DocLexer;
/**
* A parser for docblock annotations.
*
* This Drupal version allows for ignoring annotations when namespaces are
* present.
*
* @internal
*/
final class DocParser {
/**
* An array of all valid tokens for a class name.
*
* @var array
*/
private static $classIdentifiers = array(
DocLexer::T_IDENTIFIER,
DocLexer::T_TRUE,
DocLexer::T_FALSE,
DocLexer::T_NULL,
);
/**
* The lexer.
*
* @var \Doctrine\Common\Annotations\DocLexer
*/
private $lexer;
/**
* Current target context.
*
* @var string
*/
private $target;
/**
* Doc parser used to collect annotation target.
*
* @var \Doctrine\Common\Annotations\DocParser
*/
private static $metadataParser;
/**
* Flag to control if the current annotation is nested or not.
*
* @var boolean
*/
private $isNestedAnnotation = false;
/**
* Hashmap containing all use-statements that are to be used when parsing
* the given doc block.
*
* @var array
*/
private $imports = array();
/**
* This hashmap is used internally to cache results of class_exists()
* look-ups.
*
* @var array
*/
private $classExists = array();
/**
* Whether annotations that have not been imported should be ignored.
*
* @var boolean
*/
private $ignoreNotImportedAnnotations = false;
/**
* An array of default namespaces if operating in simple mode.
*
* @var array
*/
private $namespaces = array();
/**
* A list with annotations that are not causing exceptions when not resolved to an annotation class.
*
* The names must be the raw names as used in the class, not the fully qualified
* class names.
*
* @var array
*/
private $ignoredAnnotationNames = array();
/**
* @var string
*/
private $context = '';
/**
* Hash-map for caching annotation metadata.
*
* @var array
*/
private static $annotationMetadata = array(
'Doctrine\\Common\\Annotations\\Annotation\\Target' => array(
'is_annotation' => true,
'has_constructor' => true,
'properties' => array(),
'targets_literal' => 'ANNOTATION_CLASS',
'targets' => Target::TARGET_CLASS,
'default_property' => 'value',
'attribute_types' => array(
'value' => array(
'required' => false,
'type' => 'array',
'array_type' => 'string',
'value' => 'array<string>',
),
),
),
'Doctrine\\Common\\Annotations\\Annotation\\Attribute' => array(
'is_annotation' => true,
'has_constructor' => false,
'targets_literal' => 'ANNOTATION_ANNOTATION',
'targets' => Target::TARGET_ANNOTATION,
'default_property' => 'name',
'properties' => array(
'name' => 'name',
'type' => 'type',
'required' => 'required',
),
'attribute_types' => array(
'value' => array(
'required' => true,
'type' => 'string',
'value' => 'string',
),
'type' => array(
'required' => true,
'type' => 'string',
'value' => 'string',
),
'required' => array(
'required' => false,
'type' => 'boolean',
'value' => 'boolean',
),
),
),
'Doctrine\\Common\\Annotations\\Annotation\\Attributes' => array(
'is_annotation' => true,
'has_constructor' => false,
'targets_literal' => 'ANNOTATION_CLASS',
'targets' => Target::TARGET_CLASS,
'default_property' => 'value',
'properties' => array(
'value' => 'value',
),
'attribute_types' => array(
'value' => array(
'type' => 'array',
'required' => true,
'array_type' => 'Doctrine\\Common\\Annotations\\Annotation\\Attribute',
'value' => 'array<Doctrine\\Common\\Annotations\\Annotation\\Attribute>',
),
),
),
'Doctrine\\Common\\Annotations\\Annotation\\Enum' => array(
'is_annotation' => true,
'has_constructor' => true,
'targets_literal' => 'ANNOTATION_PROPERTY',
'targets' => Target::TARGET_PROPERTY,
'default_property' => 'value',
'properties' => array(
'value' => 'value',
),
'attribute_types' => array(
'value' => array(
'type' => 'array',
'required' => true,
),
'literal' => array(
'type' => 'array',
'required' => false,
),
),
),
);
/**
* Hash-map for handle types declaration.
*
* @var array
*/
private static $typeMap = array(
'float' => 'double',
'bool' => 'boolean',
// allow uppercase Boolean in honor of George Boole
'Boolean' => 'boolean',
'int' => 'integer',
);
/**
* Constructs a new DocParser.
*/
public function __construct() {
$this->lexer = new DocLexer();
}
/**
* Sets the annotation names that are ignored during the parsing process.
*
* The names are supposed to be the raw names as used in the class, not the
* fully qualified class names.
*
* @param array $names
*
* @return void
*/
public function setIgnoredAnnotationNames(array $names) {
$this->ignoredAnnotationNames = $names;
}
/**
* Sets ignore on not-imported annotations.
*
* @param boolean $bool
*
* @return void
*/
public function setIgnoreNotImportedAnnotations($bool) {
$this->ignoreNotImportedAnnotations = (bool) $bool;
}
/**
* Sets the default namespaces.
*
* @param array $namespace
*
* @return void
*
* @throws \RuntimeException
*/
public function addNamespace($namespace) {
if ($this->imports) {
throw new \RuntimeException('You must either use addNamespace(), or setImports(), but not both.');
}
$this->namespaces[] = $namespace;
}
/**
* Sets the imports.
*
* @param array $imports
*
* @return void
*
* @throws \RuntimeException
*/
public function setImports(array $imports) {
if ($this->namespaces) {
throw new \RuntimeException('You must either use addNamespace(), or setImports(), but not both.');
}
$this->imports = $imports;
}
/**
* Sets current target context as bitmask.
*
* @param integer $target
*
* @return void
*/
public function setTarget($target) {
$this->target = $target;
}
/**
* Parses the given docblock string for annotations.
*
* @param string $input The docblock string to parse.
* @param string $context The parsing context.
*
* @return array Array of annotations. If no annotations are found, an empty array is returned.
*/
public function parse($input, $context = '') {
$pos = $this
->findInitialTokenPosition($input);
if ($pos === null) {
return array();
}
$this->context = $context;
$this->lexer
->setInput(trim(substr($input, $pos), '* /'));
$this->lexer
->moveNext();
return $this
->Annotations();
}
/**
* Finds the first valid annotation
*
* @param string $input The docblock string to parse
*
* @return int|null
*/
private function findInitialTokenPosition($input) {
$pos = 0;
// search for first valid annotation
while (($pos = strpos($input, '@', $pos)) !== false) {
// if the @ is preceded by a space or * it is valid
if ($pos === 0 || $input[$pos - 1] === ' ' || $input[$pos - 1] === '*') {
return $pos;
}
$pos++;
}
return null;
}
/**
* Attempts to match the given token with the current lookahead token.
* If they match, updates the lookahead token; otherwise raises a syntax error.
*
* @param integer $token Type of token.
*
* @return boolean True if tokens match; false otherwise.
*/
private function match($token) {
if (!$this->lexer
->isNextToken($token)) {
$this
->syntaxError($this->lexer
->getLiteral($token));
}
return $this->lexer
->moveNext();
}
/**
* Attempts to match the current lookahead token with any of the given tokens.
*
* If any of them matches, this method updates the lookahead token; otherwise
* a syntax error is raised.
*
* @param array $tokens
*
* @return boolean
*/
private function matchAny(array $tokens) {
if (!$this->lexer
->isNextTokenAny($tokens)) {
$this
->syntaxError(implode(' or ', array_map(array(
$this->lexer,
'getLiteral',
), $tokens)));
}
return $this->lexer
->moveNext();
}
/**
* Generates a new syntax error.
*
* @param string $expected Expected string.
* @param array|null $token Optional token.
*
* @return void
*
* @throws AnnotationException
*/
private function syntaxError($expected, $token = null) {
if ($token === null) {
$token = $this->lexer->lookahead;
}
$message = sprintf('Expected %s, got ', $expected);
$message .= $this->lexer->lookahead === null ? 'end of string' : sprintf("'%s' at position %s", $token['value'], $token['position']);
if (strlen($this->context)) {
$message .= ' in ' . $this->context;
}
$message .= '.';
throw AnnotationException::syntaxError($message);
}
/**
* Attempts to check if a class exists or not. This never goes through the PHP autoloading mechanism
* but uses the {@link AnnotationRegistry} to load classes.
*
* @param string $fqcn
*
* @return boolean
*/
private function classExists($fqcn) {
if (isset($this->classExists[$fqcn])) {
return $this->classExists[$fqcn];
}
// first check if the class already exists, maybe loaded through another AnnotationReader
if (class_exists($fqcn, false)) {
return $this->classExists[$fqcn] = true;
}
// final check, does this class exist?
return $this->classExists[$fqcn] = AnnotationRegistry::loadAnnotationClass($fqcn);
}
/**
* Collects parsing metadata for a given annotation class
*
* @param string $name The annotation name
*
* @return void
*/
private function collectAnnotationMetadata($name) {
if (self::$metadataParser === null) {
self::$metadataParser = new self();
self::$metadataParser
->setIgnoreNotImportedAnnotations(true);
self::$metadataParser
->setIgnoredAnnotationNames($this->ignoredAnnotationNames);
self::$metadataParser
->setImports(array(
'enum' => 'Doctrine\\Common\\Annotations\\Annotation\\Enum',
'target' => 'Doctrine\\Common\\Annotations\\Annotation\\Target',
'attribute' => 'Doctrine\\Common\\Annotations\\Annotation\\Attribute',
'attributes' => 'Doctrine\\Common\\Annotations\\Annotation\\Attributes',
));
}
$class = new \ReflectionClass($name);
$docComment = $class
->getDocComment();
// Sets default values for annotation metadata
$metadata = array(
'default_property' => null,
'has_constructor' => null !== ($constructor = $class
->getConstructor()) && $constructor
->getNumberOfParameters() > 0,
'properties' => array(),
'property_types' => array(),
'attribute_types' => array(),
'targets_literal' => null,
'targets' => Target::TARGET_ALL,
'is_annotation' => false !== strpos($docComment, '@Annotation'),
);
// verify that the class is really meant to be an annotation
if ($metadata['is_annotation']) {
self::$metadataParser
->setTarget(Target::TARGET_CLASS);
foreach (self::$metadataParser
->parse($docComment, 'class @' . $name) as $annotation) {
if ($annotation instanceof Target) {
$metadata['targets'] = $annotation->targets;
$metadata['targets_literal'] = $annotation->literal;
continue;
}
if ($annotation instanceof Attributes) {
foreach ($annotation->value as $attribute) {
$this
->collectAttributeTypeMetadata($metadata, $attribute);
}
}
}
// if not has a constructor will inject values into public properties
if (false === $metadata['has_constructor']) {
// collect all public properties
foreach ($class
->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
$metadata['properties'][$property->name] = $property->name;
if (false === ($propertyComment = $property
->getDocComment())) {
continue;
}
$attribute = new Attribute();
$attribute->required = false !== strpos($propertyComment, '@Required');
$attribute->name = $property->name;
$attribute->type = false !== strpos($propertyComment, '@var') && preg_match('/@var\\s+([^\\s]+)/', $propertyComment, $matches) ? $matches[1] : 'mixed';
$this
->collectAttributeTypeMetadata($metadata, $attribute);
// checks if the property has @Enum
if (false !== strpos($propertyComment, '@Enum')) {
$context = 'property ' . $class->name . "::\$" . $property->name;
self::$metadataParser
->setTarget(Target::TARGET_PROPERTY);
foreach (self::$metadataParser
->parse($propertyComment, $context) as $annotation) {
if (!$annotation instanceof Enum) {
continue;
}
$metadata['enum'][$property->name]['value'] = $annotation->value;
$metadata['enum'][$property->name]['literal'] = !empty($annotation->literal) ? $annotation->literal : $annotation->value;
}
}
}
// choose the first property as default property
$metadata['default_property'] = reset($metadata['properties']);
}
}
self::$annotationMetadata[$name] = $metadata;
}
/**
* Collects parsing metadata for a given attribute.
*
* @param array $metadata
* @param Attribute $attribute
*
* @return void
*/
private function collectAttributeTypeMetadata(&$metadata, Attribute $attribute) {
// handle internal type declaration
$type = isset(self::$typeMap[$attribute->type]) ? self::$typeMap[$attribute->type] : $attribute->type;
// handle the case if the property type is mixed
if ('mixed' === $type) {
return;
}
// Evaluate type
switch (true) {
// Checks if the property has array<type>
case false !== ($pos = strpos($type, '<')):
$arrayType = substr($type, $pos + 1, -1);
$type = 'array';
if (isset(self::$typeMap[$arrayType])) {
$arrayType = self::$typeMap[$arrayType];
}
$metadata['attribute_types'][$attribute->name]['array_type'] = $arrayType;
break;
// Checks if the property has type[]
case false !== ($pos = strrpos($type, '[')):
$arrayType = substr($type, 0, $pos);
$type = 'array';
if (isset(self::$typeMap[$arrayType])) {
$arrayType = self::$typeMap[$arrayType];
}
$metadata['attribute_types'][$attribute->name]['array_type'] = $arrayType;
break;
}
$metadata['attribute_types'][$attribute->name]['type'] = $type;
$metadata['attribute_types'][$attribute->name]['value'] = $attribute->type;
$metadata['attribute_types'][$attribute->name]['required'] = $attribute->required;
}
/**
* Annotations ::= Annotation {[ "*" ]* [Annotation]}*
*
* @return array
*/
private function Annotations() {
$annotations = array();
while (null !== $this->lexer->lookahead) {
if (DocLexer::T_AT !== $this->lexer->lookahead['type']) {
$this->lexer
->moveNext();
continue;
}
// make sure the @ is preceded by non-catchable pattern
if (null !== $this->lexer->token && $this->lexer->lookahead['position'] === $this->lexer->token['position'] + strlen($this->lexer->token['value'])) {
$this->lexer
->moveNext();
continue;
}
// make sure the @ is followed by either a namespace separator, or
// an identifier token
if (null === ($peek = $this->lexer
->glimpse()) || DocLexer::T_NAMESPACE_SEPARATOR !== $peek['type'] && !in_array($peek['type'], self::$classIdentifiers, true) || $peek['position'] !== $this->lexer->lookahead['position'] + 1) {
$this->lexer
->moveNext();
continue;
}
$this->isNestedAnnotation = false;
if (false !== ($annot = $this
->Annotation())) {
$annotations[] = $annot;
}
}
return $annotations;
}
/**
* Annotation ::= "@" AnnotationName MethodCall
* AnnotationName ::= QualifiedName | SimpleName
* QualifiedName ::= NameSpacePart "\" {NameSpacePart "\"}* SimpleName
* NameSpacePart ::= identifier | null | false | true
* SimpleName ::= identifier | null | false | true
*
* @return mixed False if it is not a valid annotation.
*
* @throws AnnotationException
*/
private function Annotation() {
$this
->match(DocLexer::T_AT);
// check if we have an annotation
$name = $this
->Identifier();
// only process names which are not fully qualified, yet
// fully qualified names must start with a \
$originalName = $name;
if ('\\' !== $name[0]) {
$alias = false === ($pos = strpos($name, '\\')) ? $name : substr($name, 0, $pos);
$found = false;
if ($this->namespaces) {
if (isset($this->ignoredAnnotationNames[$name])) {
return false;
}
foreach ($this->namespaces as $namespace) {
if ($this
->classExists($namespace . '\\' . $name)) {
$name = $namespace . '\\' . $name;
$found = true;
break;
}
}
}
elseif (isset($this->imports[$loweredAlias = strtolower($alias)])) {
$found = true;
$name = false !== $pos ? $this->imports[$loweredAlias] . substr($name, $pos) : $this->imports[$loweredAlias];
}
elseif (!isset($this->ignoredAnnotationNames[$name]) && isset($this->imports['__NAMESPACE__']) && $this
->classExists($this->imports['__NAMESPACE__'] . '\\' . $name)) {
$name = $this->imports['__NAMESPACE__'] . '\\' . $name;
$found = true;
}
elseif (!isset($this->ignoredAnnotationNames[$name]) && $this
->classExists($name)) {
$found = true;
}
if (!$found) {
if ($this->ignoreNotImportedAnnotations || isset($this->ignoredAnnotationNames[$name])) {
return false;
}
throw AnnotationException::semanticalError(sprintf('The annotation "@%s" in %s was never imported. Did you maybe forget to add a "use" statement for this annotation?', $name, $this->context));
}
}
if (!$this
->classExists($name)) {
throw AnnotationException::semanticalError(sprintf('The annotation "@%s" in %s does not exist, or could not be auto-loaded.', $name, $this->context));
}
// at this point, $name contains the fully qualified class name of the
// annotation, and it is also guaranteed that this class exists, and
// that it is loaded
// collects the metadata annotation only if there is not yet
if (!isset(self::$annotationMetadata[$name])) {
$this
->collectAnnotationMetadata($name);
}
// verify that the class is really meant to be an annotation and not just any ordinary class
if (self::$annotationMetadata[$name]['is_annotation'] === false) {
if (isset($this->ignoredAnnotationNames[$originalName])) {
return false;
}
throw AnnotationException::semanticalError(sprintf('The class "%s" is not annotated with @Annotation. Are you sure this class can be used as annotation? If so, then you need to add @Annotation to the _class_ doc comment of "%s". If it is indeed no annotation, then you need to add @IgnoreAnnotation("%s") to the _class_ doc comment of %s.', $name, $name, $originalName, $this->context));
}
//if target is nested annotation
$target = $this->isNestedAnnotation ? Target::TARGET_ANNOTATION : $this->target;
// Next will be nested
$this->isNestedAnnotation = true;
//if annotation does not support current target
if (0 === (self::$annotationMetadata[$name]['targets'] & $target) && $target) {
throw AnnotationException::semanticalError(sprintf('Annotation @%s is not allowed to be declared on %s. You may only use this annotation on these code elements: %s.', $originalName, $this->context, self::$annotationMetadata[$name]['targets_literal']));
}
$values = $this
->MethodCall();
if (isset(self::$annotationMetadata[$name]['enum'])) {
// checks all declared attributes
foreach (self::$annotationMetadata[$name]['enum'] as $property => $enum) {
// checks if the attribute is a valid enumerator
if (isset($values[$property]) && !in_array($values[$property], $enum['value'])) {
throw AnnotationException::enumeratorError($property, $name, $this->context, $enum['literal'], $values[$property]);
}
}
}
// checks all declared attributes
foreach (self::$annotationMetadata[$name]['attribute_types'] as $property => $type) {
if ($property === self::$annotationMetadata[$name]['default_property'] && !isset($values[$property]) && isset($values['value'])) {
$property = 'value';
}
// handle a not given attribute or null value
if (!isset($values[$property])) {
if ($type['required']) {
throw AnnotationException::requiredError($property, $originalName, $this->context, 'a(n) ' . $type['value']);
}
continue;
}
if ($type['type'] === 'array') {
// handle the case of a single value
if (!is_array($values[$property])) {
$values[$property] = array(
$values[$property],
);
}
// checks if the attribute has array type declaration, such as "array<string>"
if (isset($type['array_type'])) {
foreach ($values[$property] as $item) {
if (gettype($item) !== $type['array_type'] && !$item instanceof $type['array_type']) {
throw AnnotationException::attributeTypeError($property, $originalName, $this->context, 'either a(n) ' . $type['array_type'] . ', or an array of ' . $type['array_type'] . 's', $item);
}
}
}
}
elseif (gettype($values[$property]) !== $type['type'] && !$values[$property] instanceof $type['type']) {
throw AnnotationException::attributeTypeError($property, $originalName, $this->context, 'a(n) ' . $type['value'], $values[$property]);
}
}
// check if the annotation expects values via the constructor,
// or directly injected into public properties
if (self::$annotationMetadata[$name]['has_constructor'] === true) {
return new $name($values);
}
$instance = new $name();
foreach ($values as $property => $value) {
if (!isset(self::$annotationMetadata[$name]['properties'][$property])) {
if ('value' !== $property) {
throw AnnotationException::creationError(sprintf('The annotation @%s declared on %s does not have a property named "%s". Available properties: %s', $originalName, $this->context, $property, implode(', ', self::$annotationMetadata[$name]['properties'])));
}
// handle the case if the property has no annotations
if (!($property = self::$annotationMetadata[$name]['default_property'])) {
throw AnnotationException::creationError(sprintf('The annotation @%s declared on %s does not accept any values, but got %s.', $originalName, $this->context, json_encode($values)));
}
}
$instance->{$property} = $value;
}
return $instance;
}
/**
* MethodCall ::= ["(" [Values] ")"]
*
* @return array
*/
private function MethodCall() {
$values = array();
if (!$this->lexer
->isNextToken(DocLexer::T_OPEN_PARENTHESIS)) {
return $values;
}
$this
->match(DocLexer::T_OPEN_PARENTHESIS);
if (!$this->lexer
->isNextToken(DocLexer::T_CLOSE_PARENTHESIS)) {
$values = $this
->Values();
}
$this
->match(DocLexer::T_CLOSE_PARENTHESIS);
return $values;
}
/**
* Values ::= Array | Value {"," Value}* [","]
*
* @return array
*/
private function Values() {
$values = array(
$this
->Value(),
);
while ($this->lexer
->isNextToken(DocLexer::T_COMMA)) {
$this
->match(DocLexer::T_COMMA);
if ($this->lexer
->isNextToken(DocLexer::T_CLOSE_PARENTHESIS)) {
break;
}
$token = $this->lexer->lookahead;
$value = $this
->Value();
if (!is_object($value) && !is_array($value)) {
$this
->syntaxError('Value', $token);
}
$values[] = $value;
}
foreach ($values as $k => $value) {
if (is_object($value) && $value instanceof \stdClass) {
$values[$value->name] = $value->value;
}
else {
if (!isset($values['value'])) {
$values['value'] = $value;
}
else {
if (!is_array($values['value'])) {
$values['value'] = array(
$values['value'],
);
}
$values['value'][] = $value;
}
}
unset($values[$k]);
}
return $values;
}
/**
* Constant ::= integer | string | float | boolean
*
* @return mixed
*
* @throws AnnotationException
*/
private function Constant() {
$identifier = $this
->Identifier();
if (!defined($identifier) && false !== strpos($identifier, '::') && '\\' !== $identifier[0]) {
list($className, $const) = explode('::', $identifier);
$alias = false === ($pos = strpos($className, '\\')) ? $className : substr($className, 0, $pos);
$found = false;
switch (true) {
case !empty($this->namespaces):
foreach ($this->namespaces as $ns) {
if (class_exists($ns . '\\' . $className) || interface_exists($ns . '\\' . $className)) {
$className = $ns . '\\' . $className;
$found = true;
break;
}
}
break;
case isset($this->imports[$loweredAlias = strtolower($alias)]):
$found = true;
$className = false !== $pos ? $this->imports[$loweredAlias] . substr($className, $pos) : $this->imports[$loweredAlias];
break;
default:
if (isset($this->imports['__NAMESPACE__'])) {
$ns = $this->imports['__NAMESPACE__'];
if (class_exists($ns . '\\' . $className) || interface_exists($ns . '\\' . $className)) {
$className = $ns . '\\' . $className;
$found = true;
}
}
break;
}
if ($found) {
$identifier = $className . '::' . $const;
}
}
// checks if identifier ends with ::class, \strlen('::class') === 7
$classPos = stripos($identifier, '::class');
if ($classPos === strlen($identifier) - 7) {
return substr($identifier, 0, $classPos);
}
if (!defined($identifier)) {
throw AnnotationException::semanticalErrorConstants($identifier, $this->context);
}
return constant($identifier);
}
/**
* Identifier ::= string
*
* @return string
*/
private function Identifier() {
// check if we have an annotation
if (!$this->lexer
->isNextTokenAny(self::$classIdentifiers)) {
$this
->syntaxError('namespace separator or identifier');
}
$this->lexer
->moveNext();
$className = $this->lexer->token['value'];
while (null !== $this->lexer->lookahead && $this->lexer->lookahead['position'] === $this->lexer->token['position'] + strlen($this->lexer->token['value']) && $this->lexer
->isNextToken(DocLexer::T_NAMESPACE_SEPARATOR)) {
$this
->match(DocLexer::T_NAMESPACE_SEPARATOR);
$this
->matchAny(self::$classIdentifiers);
$className .= '\\' . $this->lexer->token['value'];
}
return $className;
}
/**
* Value ::= PlainValue | FieldAssignment
*
* @return mixed
*/
private function Value() {
$peek = $this->lexer
->glimpse();
if (DocLexer::T_EQUALS === $peek['type']) {
return $this
->FieldAssignment();
}
return $this
->PlainValue();
}
/**
* PlainValue ::= integer | string | float | boolean | Array | Annotation
*
* @return mixed
*/
private function PlainValue() {
if ($this->lexer
->isNextToken(DocLexer::T_OPEN_CURLY_BRACES)) {
return $this
->Arrayx();
}
if ($this->lexer
->isNextToken(DocLexer::T_AT)) {
return $this
->Annotation();
}
if ($this->lexer
->isNextToken(DocLexer::T_IDENTIFIER)) {
return $this
->Constant();
}
switch ($this->lexer->lookahead['type']) {
case DocLexer::T_STRING:
$this
->match(DocLexer::T_STRING);
return $this->lexer->token['value'];
case DocLexer::T_INTEGER:
$this
->match(DocLexer::T_INTEGER);
return (int) $this->lexer->token['value'];
case DocLexer::T_FLOAT:
$this
->match(DocLexer::T_FLOAT);
return (double) $this->lexer->token['value'];
case DocLexer::T_TRUE:
$this
->match(DocLexer::T_TRUE);
return true;
case DocLexer::T_FALSE:
$this
->match(DocLexer::T_FALSE);
return false;
case DocLexer::T_NULL:
$this
->match(DocLexer::T_NULL);
return null;
default:
$this
->syntaxError('PlainValue');
}
}
/**
* FieldAssignment ::= FieldName "=" PlainValue
* FieldName ::= identifier
*
* @return array
*/
private function FieldAssignment() {
$this
->match(DocLexer::T_IDENTIFIER);
$fieldName = $this->lexer->token['value'];
$this
->match(DocLexer::T_EQUALS);
$item = new \stdClass();
$item->name = $fieldName;
$item->value = $this
->PlainValue();
return $item;
}
/**
* Array ::= "{" ArrayEntry {"," ArrayEntry}* [","] "}"
*
* @return array
*/
private function Arrayx() {
$array = $values = array();
$this
->match(DocLexer::T_OPEN_CURLY_BRACES);
// If the array is empty, stop parsing and return.
if ($this->lexer
->isNextToken(DocLexer::T_CLOSE_CURLY_BRACES)) {
$this
->match(DocLexer::T_CLOSE_CURLY_BRACES);
return $array;
}
$values[] = $this
->ArrayEntry();
while ($this->lexer
->isNextToken(DocLexer::T_COMMA)) {
$this
->match(DocLexer::T_COMMA);
// optional trailing comma
if ($this->lexer
->isNextToken(DocLexer::T_CLOSE_CURLY_BRACES)) {
break;
}
$values[] = $this
->ArrayEntry();
}
$this
->match(DocLexer::T_CLOSE_CURLY_BRACES);
foreach ($values as $value) {
list($key, $val) = $value;
if ($key !== null) {
$array[$key] = $val;
}
else {
$array[] = $val;
}
}
return $array;
}
/**
* ArrayEntry ::= Value | KeyValuePair
* KeyValuePair ::= Key ("=" | ":") PlainValue | Constant
* Key ::= string | integer | Constant
*
* @return array
*/
private function ArrayEntry() {
$peek = $this->lexer
->glimpse();
if (DocLexer::T_EQUALS === $peek['type'] || DocLexer::T_COLON === $peek['type']) {
if ($this->lexer
->isNextToken(DocLexer::T_IDENTIFIER)) {
$key = $this
->Constant();
}
else {
$this
->matchAny(array(
DocLexer::T_INTEGER,
DocLexer::T_STRING,
));
$key = $this->lexer->token['value'];
}
$this
->matchAny(array(
DocLexer::T_EQUALS,
DocLexer::T_COLON,
));
return array(
$key,
$this
->PlainValue(),
);
}
return array(
null,
$this
->Value(),
);
}
}