Symfony Profiler

<?php
declare(strict_types=1);
namespace GraphQL\Language;
use GraphQL\Error\SyntaxError;
use GraphQL\Language\AST\ArgumentNode;
use GraphQL\Language\AST\BooleanValueNode;
use GraphQL\Language\AST\DefinitionNode;
use GraphQL\Language\AST\DirectiveDefinitionNode;
use GraphQL\Language\AST\DirectiveNode;
use GraphQL\Language\AST\DocumentNode;
use GraphQL\Language\AST\EnumTypeDefinitionNode;
use GraphQL\Language\AST\EnumTypeExtensionNode;
use GraphQL\Language\AST\EnumValueDefinitionNode;
use GraphQL\Language\AST\EnumValueNode;
use GraphQL\Language\AST\ExecutableDefinitionNode;
use GraphQL\Language\AST\FieldDefinitionNode;
use GraphQL\Language\AST\FieldNode;
use GraphQL\Language\AST\FloatValueNode;
use GraphQL\Language\AST\FragmentDefinitionNode;
use GraphQL\Language\AST\FragmentSpreadNode;
use GraphQL\Language\AST\InlineFragmentNode;
use GraphQL\Language\AST\InputObjectTypeDefinitionNode;
use GraphQL\Language\AST\InputObjectTypeExtensionNode;
use GraphQL\Language\AST\InputValueDefinitionNode;
use GraphQL\Language\AST\InterfaceTypeDefinitionNode;
use GraphQL\Language\AST\InterfaceTypeExtensionNode;
use GraphQL\Language\AST\IntValueNode;
use GraphQL\Language\AST\ListTypeNode;
use GraphQL\Language\AST\ListValueNode;
use GraphQL\Language\AST\Location;
use GraphQL\Language\AST\NamedTypeNode;
use GraphQL\Language\AST\NameNode;
use GraphQL\Language\AST\Node;
use GraphQL\Language\AST\NodeList;
use GraphQL\Language\AST\NonNullTypeNode;
use GraphQL\Language\AST\NullValueNode;
use GraphQL\Language\AST\ObjectFieldNode;
use GraphQL\Language\AST\ObjectTypeDefinitionNode;
use GraphQL\Language\AST\ObjectTypeExtensionNode;
use GraphQL\Language\AST\ObjectValueNode;
use GraphQL\Language\AST\OperationDefinitionNode;
use GraphQL\Language\AST\OperationTypeDefinitionNode;
use GraphQL\Language\AST\ScalarTypeDefinitionNode;
use GraphQL\Language\AST\ScalarTypeExtensionNode;
use GraphQL\Language\AST\SchemaDefinitionNode;
use GraphQL\Language\AST\SchemaTypeExtensionNode;
use GraphQL\Language\AST\SelectionNode;
use GraphQL\Language\AST\SelectionSetNode;
use GraphQL\Language\AST\StringValueNode;
use GraphQL\Language\AST\TypeExtensionNode;
use GraphQL\Language\AST\TypeNode;
use GraphQL\Language\AST\TypeSystemDefinitionNode;
use GraphQL\Language\AST\UnionTypeDefinitionNode;
use GraphQL\Language\AST\UnionTypeExtensionNode;
use GraphQL\Language\AST\ValueNode;
use GraphQL\Language\AST\VariableDefinitionNode;
use GraphQL\Language\AST\VariableNode;
use function count;
use function sprintf;
/**
* Parses string containing GraphQL query or [type definition](type-system/type-language.md) to Abstract Syntax Tree.
*
* Those magic functions allow partial parsing:
*
* @method static NameNode name(Source|string $source, bool[] $options = [])
* @method static DocumentNode document(Source|string $source, bool[] $options = [])
* @method static ExecutableDefinitionNode|TypeSystemDefinitionNode definition(Source|string $source, bool[] $options = [])
* @method static ExecutableDefinitionNode executableDefinition(Source|string $source, bool[] $options = [])
* @method static OperationDefinitionNode operationDefinition(Source|string $source, bool[] $options = [])
* @method static string operationType(Source|string $source, bool[] $options = [])
* @method static NodeList<VariableDefinitionNode> variableDefinitions(Source|string $source, bool[] $options = [])
* @method static VariableDefinitionNode variableDefinition(Source|string $source, bool[] $options = [])
* @method static VariableNode variable(Source|string $source, bool[] $options = [])
* @method static SelectionSetNode selectionSet(Source|string $source, bool[] $options = [])
* @method static mixed selection(Source|string $source, bool[] $options = [])
* @method static FieldNode field(Source|string $source, bool[] $options = [])
* @method static NodeList<ArgumentNode> arguments(Source|string $source, bool[] $options = [])
* @method static NodeList<ArgumentNode> constArguments(Source|string $source, bool[] $options = [])
* @method static ArgumentNode argument(Source|string $source, bool[] $options = [])
* @method static ArgumentNode constArgument(Source|string $source, bool[] $options = [])
* @method static FragmentSpreadNode|InlineFragmentNode fragment(Source|string $source, bool[] $options = [])
* @method static FragmentDefinitionNode fragmentDefinition(Source|string $source, bool[] $options = [])
* @method static NameNode fragmentName(Source|string $source, bool[] $options = [])
* @method static BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|NullValueNode|ObjectValueNode|StringValueNode|VariableNode valueLiteral(Source|string $source, bool[] $options = [])
* @method static BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|NullValueNode|ObjectValueNode|StringValueNode constValueLiteral(Source|string $source, bool[] $options = [])
* @method static StringValueNode stringLiteral(Source|string $source, bool[] $options = [])
* @method static BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|StringValueNode constValue(Source|string $source, bool[] $options = [])
* @method static BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode variableValue(Source|string $source, bool[] $options = [])
* @method static ListValueNode array(Source|string $source, bool[] $options = [])
* @method static ListValueNode constArray(Source|string $source, bool[] $options = [])
* @method static ObjectValueNode object(Source|string $source, bool[] $options = [])
* @method static ObjectValueNode constObject(Source|string $source, bool[] $options = [])
* @method static ObjectFieldNode objectField(Source|string $source, bool[] $options = [])
* @method static ObjectFieldNode constObjectField(Source|string $source, bool[] $options = [])
* @method static NodeList<DirectiveNode> directives(Source|string $source, bool[] $options = [])
* @method static NodeList<DirectiveNode> constDirectives(Source|string $source, bool[] $options = [])
* @method static DirectiveNode directive(Source|string $source, bool[] $options = [])
* @method static DirectiveNode constDirective(Source|string $source, bool[] $options = [])
* @method static ListTypeNode|NamedTypeNode|NonNullTypeNode typeReference(Source|string $source, bool[] $options = [])
* @method static NamedTypeNode namedType(Source|string $source, bool[] $options = [])
* @method static TypeSystemDefinitionNode typeSystemDefinition(Source|string $source, bool[] $options = [])
* @method static StringValueNode|null description(Source|string $source, bool[] $options = [])
* @method static SchemaDefinitionNode schemaDefinition(Source|string $source, bool[] $options = [])
* @method static OperationTypeDefinitionNode operationTypeDefinition(Source|string $source, bool[] $options = [])
* @method static ScalarTypeDefinitionNode scalarTypeDefinition(Source|string $source, bool[] $options = [])
* @method static ObjectTypeDefinitionNode objectTypeDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<NamedTypeNode> implementsInterfaces(Source|string $source, bool[] $options = [])
* @method static NodeList<FieldDefinitionNode> fieldsDefinition(Source|string $source, bool[] $options = [])
* @method static FieldDefinitionNode fieldDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<InputValueDefinitionNode> argumentsDefinition(Source|string $source, bool[] $options = [])
* @method static InputValueDefinitionNode inputValueDefinition(Source|string $source, bool[] $options = [])
* @method static InterfaceTypeDefinitionNode interfaceTypeDefinition(Source|string $source, bool[] $options = [])
* @method static UnionTypeDefinitionNode unionTypeDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<NamedTypeNode> unionMemberTypes(Source|string $source, bool[] $options = [])
* @method static EnumTypeDefinitionNode enumTypeDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<EnumValueDefinitionNode> enumValuesDefinition(Source|string $source, bool[] $options = [])
* @method static EnumValueDefinitionNode enumValueDefinition(Source|string $source, bool[] $options = [])
* @method static InputObjectTypeDefinitionNode inputObjectTypeDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<InputValueDefinitionNode> inputFieldsDefinition(Source|string $source, bool[] $options = [])
* @method static TypeExtensionNode typeExtension(Source|string $source, bool[] $options = [])
* @method static SchemaTypeExtensionNode schemaTypeExtension(Source|string $source, bool[] $options = [])
* @method static ScalarTypeExtensionNode scalarTypeExtension(Source|string $source, bool[] $options = [])
* @method static ObjectTypeExtensionNode objectTypeExtension(Source|string $source, bool[] $options = [])
* @method static InterfaceTypeExtensionNode interfaceTypeExtension(Source|string $source, bool[] $options = [])
* @method static UnionTypeExtensionNode unionTypeExtension(Source|string $source, bool[] $options = [])
* @method static EnumTypeExtensionNode enumTypeExtension(Source|string $source, bool[] $options = [])
* @method static InputObjectTypeExtensionNode inputObjectTypeExtension(Source|string $source, bool[] $options = [])
* @method static DirectiveDefinitionNode directiveDefinition(Source|string $source, bool[] $options = [])
* @method static NodeList<NameNode> directiveLocations(Source|string $source, bool[] $options = [])
* @method static NameNode directiveLocation(Source|string $source, bool[] $options = [])
*/
class Parser
{
/**
* Given a GraphQL source, parses it into a `GraphQL\Language\AST\DocumentNode`.
* Throws `GraphQL\Error\SyntaxError` if a syntax error is encountered.
*
* Available options:
*
* noLocation: boolean,
* (By default, the parser creates AST nodes that know the location
* in the source that they correspond to. This configuration flag
* disables that behavior for performance or testing.)
*
* allowLegacySDLEmptyFields: boolean
* If enabled, the parser will parse empty fields sets in the Schema
* Definition Language. Otherwise, the parser will follow the current
* specification.
*
* This option is provided to ease adoption of the final SDL specification
* and will be removed in a future major release.
*
* allowLegacySDLImplementsInterfaces: boolean
* If enabled, the parser will parse implemented interfaces with no `&`
* character between each interface. Otherwise, the parser will follow the
* current specification.
*
* This option is provided to ease adoption of the final SDL specification
* and will be removed in a future major release.
*
* experimentalFragmentVariables: boolean,
* (If enabled, the parser will understand and parse variable definitions
* contained in a fragment definition. They'll be represented in the
* `variableDefinitions` field of the FragmentDefinitionNode.
*
* The syntax is identical to normal, query-defined variables. For example:
*
* fragment A($var: Boolean = false) on T {
* ...
* }
*
* Note: this feature is experimental and may change or be removed in the
* future.)
*
* @param Source|string $source
* @param bool[] $options
*
* @return DocumentNode
*
* @throws SyntaxError
*
* @api
*/
public static function parse($source, array $options = [])
{
$parser = new self($source, $options);
return $parser->parseDocument();
}
/**
* Given a string containing a GraphQL value (ex. `[42]`), parse the AST for
* that value.
* Throws `GraphQL\Error\SyntaxError` if a syntax error is encountered.
*
* This is useful within tools that operate upon GraphQL Values directly and
* in isolation of complete GraphQL documents.
*
* Consider providing the results to the utility function: `GraphQL\Utils\AST::valueFromAST()`.
*
* @param Source|string $source
* @param bool[] $options
*
* @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode
*
* @api
*/
public static function parseValue($source, array $options = [])
{
$parser = new Parser($source, $options);
$parser->expect(Token::SOF);
$value = $parser->parseValueLiteral(false);
$parser->expect(Token::EOF);
return $value;
}
/**
* Given a string containing a GraphQL Type (ex. `[Int!]`), parse the AST for
* that type.
* Throws `GraphQL\Error\SyntaxError` if a syntax error is encountered.
*
* This is useful within tools that operate upon GraphQL Types directly and
* in isolation of complete GraphQL documents.
*
* Consider providing the results to the utility function: `GraphQL\Utils\AST::typeFromAST()`.
*
* @param Source|string $source
* @param bool[] $options
*
* @return ListTypeNode|NamedTypeNode|NonNullTypeNode
*
* @api
*/
public static function parseType($source, array $options = [])
{
$parser = new Parser($source, $options);
$parser->expect(Token::SOF);
$type = $parser->parseTypeReference();
$parser->expect(Token::EOF);
return $type;
}
/**
* Parse partial source by delegating calls to the internal parseX methods.
*
* @param bool[] $arguments
*
* @throws SyntaxError
*/
public static function __callStatic(string $name, array $arguments)
{
$parser = new Parser(...$arguments);
$parser->expect(Token::SOF);
switch ($name) {
case 'arguments':
case 'valueLiteral':
case 'array':
case 'object':
case 'objectField':
case 'directives':
case 'directive':
$type = $parser->{'parse' . $name}(false);
break;
case 'constArguments':
$type = $parser->parseArguments(true);
break;
case 'constValueLiteral':
$type = $parser->parseValueLiteral(true);
break;
case 'constArray':
$type = $parser->parseArray(true);
break;
case 'constObject':
$type = $parser->parseObject(true);
break;
case 'constObjectField':
$type = $parser->parseObjectField(true);
break;
case 'constDirectives':
$type = $parser->parseDirectives(true);
break;
case 'constDirective':
$type = $parser->parseDirective(true);
break;
default:
$type = $parser->{'parse' . $name}();
}
$parser->expect(Token::EOF);
return $type;
}
/** @var Lexer */
private $lexer;
/**
* @param Source|string $source
* @param bool[] $options
*/
public function __construct($source, array $options = [])
{
$sourceObj = $source instanceof Source ? $source : new Source($source);
$this->lexer = new Lexer($sourceObj, $options);
}
/**
* Returns a location object, used to identify the place in
* the source that created a given parsed object.
*/
private function loc(Token $startToken) : ?Location
{
if (! ($this->lexer->options['noLocation'] ?? false)) {
return new Location($startToken, $this->lexer->lastToken, $this->lexer->source);
}
return null;
}
/**
* Determines if the next token is of a given kind
*/
private function peek(string $kind) : bool
{
return $this->lexer->token->kind === $kind;
}
/**
* If the next token is of the given kind, return true after advancing
* the parser. Otherwise, do not change the parser state and return false.
*/
private function skip(string $kind) : bool
{
$match = $this->lexer->token->kind === $kind;
if ($match) {
$this->lexer->advance();
}
return $match;
}
/**
* If the next token is of the given kind, return that token after advancing
* the parser. Otherwise, do not change the parser state and return false.
*
* @throws SyntaxError
*/
private function expect(string $kind) : Token
{
$token = $this->lexer->token;
if ($token->kind === $kind) {
$this->lexer->advance();
return $token;
}
throw new SyntaxError(
$this->lexer->source,
$token->start,
sprintf('Expected %s, found %s', $kind, $token->getDescription())
);
}
/**
* If the next token is a keyword with the given value, advance the lexer.
* Otherwise, throw an error.
*
* @throws SyntaxError
*/
private function expectKeyword(string $value) : void
{
$token = $this->lexer->token;
if ($token->kind !== Token::NAME || $token->value !== $value) {
throw new SyntaxError(
$this->lexer->source,
$token->start,
'Expected "' . $value . '", found ' . $token->getDescription()
);
}
$this->lexer->advance();
}
/**
* If the next token is a given keyword, return "true" after advancing
* the lexer. Otherwise, do not change the parser state and return "false".
*/
private function expectOptionalKeyword(string $value) : bool
{
$token = $this->lexer->token;
if ($token->kind === Token::NAME && $token->value === $value) {
$this->lexer->advance();
return true;
}
return false;
}
private function unexpected(?Token $atToken = null) : SyntaxError
{
$token = $atToken ?? $this->lexer->token;
return new SyntaxError($this->lexer->source, $token->start, 'Unexpected ' . $token->getDescription());
}
/**
* Returns a possibly empty list of parse nodes, determined by
* the parseFn. This list begins with a lex token of openKind
* and ends with a lex token of closeKind. Advances the parser
* to the next lex token after the closing token.
*
* @throws SyntaxError
*/
private function any(string $openKind, callable $parseFn, string $closeKind) : NodeList
{
$this->expect($openKind);
$nodes = [];
while (! $this->skip($closeKind)) {
$nodes[] = $parseFn($this);
}
return new NodeList($nodes);
}
/**
* Returns a non-empty list of parse nodes, determined by
* the parseFn. This list begins with a lex token of openKind
* and ends with a lex token of closeKind. Advances the parser
* to the next lex token after the closing token.
*
* @throws SyntaxError
*/
private function many(string $openKind, callable $parseFn, string $closeKind) : NodeList
{
$this->expect($openKind);
$nodes = [$parseFn($this)];
while (! $this->skip($closeKind)) {
$nodes[] = $parseFn($this);
}
return new NodeList($nodes);
}
/**
* Converts a name lex token into a name parse node.
*
* @throws SyntaxError
*/
private function parseName() : NameNode
{
$token = $this->expect(Token::NAME);
return new NameNode([
'value' => $token->value,
'loc' => $this->loc($token),
]);
}
/**
* Implements the parsing rules in the Document section.
*
* @throws SyntaxError
*/
private function parseDocument() : DocumentNode
{
$start = $this->lexer->token;
return new DocumentNode([
'definitions' => $this->many(
Token::SOF,
function () {
return $this->parseDefinition();
},
Token::EOF
),
'loc' => $this->loc($start),
]);
}
/**
* @return ExecutableDefinitionNode|TypeSystemDefinitionNode
*
* @throws SyntaxError
*/
private function parseDefinition() : DefinitionNode
{
if ($this->peek(Token::NAME)) {
switch ($this->lexer->token->value) {
case 'query':
case 'mutation':
case 'subscription':
case 'fragment':
return $this->parseExecutableDefinition();
// Note: The schema definition language is an experimental addition.
case 'schema':
case 'scalar':
case 'type':
case 'interface':
case 'union':
case 'enum':
case 'input':
case 'extend':
case 'directive':
// Note: The schema definition language is an experimental addition.
return $this->parseTypeSystemDefinition();
}
} elseif ($this->peek(Token::BRACE_L)) {
return $this->parseExecutableDefinition();
} elseif ($this->peekDescription()) {
// Note: The schema definition language is an experimental addition.
return $this->parseTypeSystemDefinition();
}
throw $this->unexpected();
}
/**
* @throws SyntaxError
*/
private function parseExecutableDefinition() : ExecutableDefinitionNode
{
if ($this->peek(Token::NAME)) {
switch ($this->lexer->token->value) {
case 'query':
case 'mutation':
case 'subscription':
return $this->parseOperationDefinition();
case 'fragment':
return $this->parseFragmentDefinition();
}
} elseif ($this->peek(Token::BRACE_L)) {
return $this->parseOperationDefinition();
}
throw $this->unexpected();
}
// Implements the parsing rules in the Operations section.
/**
* @throws SyntaxError
*/
private function parseOperationDefinition() : OperationDefinitionNode
{
$start = $this->lexer->token;
if ($this->peek(Token::BRACE_L)) {
return new OperationDefinitionNode([
'operation' => 'query',
'name' => null,
'variableDefinitions' => new NodeList([]),
'directives' => new NodeList([]),
'selectionSet' => $this->parseSelectionSet(),
'loc' => $this->loc($start),
]);
}
$operation = $this->parseOperationType();
$name = null;
if ($this->peek(Token::NAME)) {
$name = $this->parseName();
}
return new OperationDefinitionNode([
'operation' => $operation,
'name' => $name,
'variableDefinitions' => $this->parseVariableDefinitions(),
'directives' => $this->parseDirectives(false),
'selectionSet' => $this->parseSelectionSet(),
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseOperationType() : string
{
$operationToken = $this->expect(Token::NAME);
switch ($operationToken->value) {
case 'query':
return 'query';
case 'mutation':
return 'mutation';
case 'subscription':
return 'subscription';
}
throw $this->unexpected($operationToken);
}
private function parseVariableDefinitions() : NodeList
{
return $this->peek(Token::PAREN_L)
? $this->many(
Token::PAREN_L,
function () : VariableDefinitionNode {
return $this->parseVariableDefinition();
},
Token::PAREN_R
)
: new NodeList([]);
}
/**
* @throws SyntaxError
*/
private function parseVariableDefinition() : VariableDefinitionNode
{
$start = $this->lexer->token;
$var = $this->parseVariable();
$this->expect(Token::COLON);
$type = $this->parseTypeReference();
return new VariableDefinitionNode([
'variable' => $var,
'type' => $type,
'defaultValue' => $this->skip(Token::EQUALS)
? $this->parseValueLiteral(true)
: null,
'directives' => $this->parseDirectives(true),
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseVariable() : VariableNode
{
$start = $this->lexer->token;
$this->expect(Token::DOLLAR);
return new VariableNode([
'name' => $this->parseName(),
'loc' => $this->loc($start),
]);
}
private function parseSelectionSet() : SelectionSetNode
{
$start = $this->lexer->token;
return new SelectionSetNode(
[
'selections' => $this->many(
Token::BRACE_L,
function () : SelectionNode {
return $this->parseSelection();
},
Token::BRACE_R
),
'loc' => $this->loc($start),
]
);
}
/**
* Selection :
* - Field
* - FragmentSpread
* - InlineFragment
*/
private function parseSelection() : SelectionNode
{
return $this->peek(Token::SPREAD)
? $this->parseFragment()
: $this->parseField();
}
/**
* @throws SyntaxError
*/
private function parseField() : FieldNode
{
$start = $this->lexer->token;
$nameOrAlias = $this->parseName();
if ($this->skip(Token::COLON)) {
$alias = $nameOrAlias;
$name = $this->parseName();
} else {
$alias = null;
$name = $nameOrAlias;
}
return new FieldNode([
'alias' => $alias,
'name' => $name,
'arguments' => $this->parseArguments(false),
'directives' => $this->parseDirectives(false),
'selectionSet' => $this->peek(Token::BRACE_L) ? $this->parseSelectionSet() : null,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseArguments(bool $isConst) : NodeList
{
$parseFn = $isConst
? function () : ArgumentNode {
return $this->parseConstArgument();
}
: function () : ArgumentNode {
return $this->parseArgument();
};
return $this->peek(Token::PAREN_L)
? $this->many(Token::PAREN_L, $parseFn, Token::PAREN_R)
: new NodeList([]);
}
/**
* @throws SyntaxError
*/
private function parseArgument() : ArgumentNode
{
$start = $this->lexer->token;
$name = $this->parseName();
$this->expect(Token::COLON);
$value = $this->parseValueLiteral(false);
return new ArgumentNode([
'name' => $name,
'value' => $value,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseConstArgument() : ArgumentNode
{
$start = $this->lexer->token;
$name = $this->parseName();
$this->expect(Token::COLON);
$value = $this->parseConstValue();
return new ArgumentNode([
'name' => $name,
'value' => $value,
'loc' => $this->loc($start),
]);
}
// Implements the parsing rules in the Fragments section.
/**
* @return FragmentSpreadNode|InlineFragmentNode
*
* @throws SyntaxError
*/
private function parseFragment() : SelectionNode
{
$start = $this->lexer->token;
$this->expect(Token::SPREAD);
$hasTypeCondition = $this->expectOptionalKeyword('on');
if (! $hasTypeCondition && $this->peek(Token::NAME)) {
return new FragmentSpreadNode([
'name' => $this->parseFragmentName(),
'directives' => $this->parseDirectives(false),
'loc' => $this->loc($start),
]);
}
return new InlineFragmentNode([
'typeCondition' => $hasTypeCondition ? $this->parseNamedType() : null,
'directives' => $this->parseDirectives(false),
'selectionSet' => $this->parseSelectionSet(),
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseFragmentDefinition() : FragmentDefinitionNode
{
$start = $this->lexer->token;
$this->expectKeyword('fragment');
$name = $this->parseFragmentName();
// Experimental support for defining variables within fragments changes
// the grammar of FragmentDefinition:
// - fragment FragmentName VariableDefinitions? on TypeCondition Directives? SelectionSet
$variableDefinitions = null;
if (isset($this->lexer->options['experimentalFragmentVariables'])) {
$variableDefinitions = $this->parseVariableDefinitions();
}
$this->expectKeyword('on');
$typeCondition = $this->parseNamedType();
return new FragmentDefinitionNode([
'name' => $name,
'variableDefinitions' => $variableDefinitions,
'typeCondition' => $typeCondition,
'directives' => $this->parseDirectives(false),
'selectionSet' => $this->parseSelectionSet(),
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseFragmentName() : NameNode
{
if ($this->lexer->token->value === 'on') {
throw $this->unexpected();
}
return $this->parseName();
}
// Implements the parsing rules in the Values section.
/**
* Value[Const] :
* - [~Const] Variable
* - IntValue
* - FloatValue
* - StringValue
* - BooleanValue
* - NullValue
* - EnumValue
* - ListValue[?Const]
* - ObjectValue[?Const]
*
* BooleanValue : one of `true` `false`
*
* NullValue : `null`
*
* EnumValue : Name but not `true`, `false` or `null`
*
* @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|StringValueNode|VariableNode|ListValueNode|ObjectValueNode|NullValueNode
*
* @throws SyntaxError
*/
private function parseValueLiteral(bool $isConst) : ValueNode
{
$token = $this->lexer->token;
switch ($token->kind) {
case Token::BRACKET_L:
return $this->parseArray($isConst);
case Token::BRACE_L:
return $this->parseObject($isConst);
case Token::INT:
$this->lexer->advance();
return new IntValueNode([
'value' => $token->value,
'loc' => $this->loc($token),
]);
case Token::FLOAT:
$this->lexer->advance();
return new FloatValueNode([
'value' => $token->value,
'loc' => $this->loc($token),
]);
case Token::STRING:
case Token::BLOCK_STRING:
return $this->parseStringLiteral();
case Token::NAME:
if ($token->value === 'true' || $token->value === 'false') {
$this->lexer->advance();
return new BooleanValueNode([
'value' => $token->value === 'true',
'loc' => $this->loc($token),
]);
}
if ($token->value === 'null') {
$this->lexer->advance();
return new NullValueNode([
'loc' => $this->loc($token),
]);
} else {
$this->lexer->advance();
return new EnumValueNode([
'value' => $token->value,
'loc' => $this->loc($token),
]);
}
break;
case Token::DOLLAR:
if (! $isConst) {
return $this->parseVariable();
}
break;
}
throw $this->unexpected();
}
private function parseStringLiteral() : StringValueNode
{
$token = $this->lexer->token;
$this->lexer->advance();
return new StringValueNode([
'value' => $token->value,
'block' => $token->kind === Token::BLOCK_STRING,
'loc' => $this->loc($token),
]);
}
/**
* @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|StringValueNode|VariableNode
*
* @throws SyntaxError
*/
private function parseConstValue() : ValueNode
{
return $this->parseValueLiteral(true);
}
/**
* @return BooleanValueNode|EnumValueNode|FloatValueNode|IntValueNode|ListValueNode|ObjectValueNode|StringValueNode|VariableNode
*/
private function parseVariableValue() : ValueNode
{
return $this->parseValueLiteral(false);
}
private function parseArray(bool $isConst) : ListValueNode
{
$start = $this->lexer->token;
$parseFn = $isConst
? function () {
return $this->parseConstValue();
}
: function () {
return $this->parseVariableValue();
};
return new ListValueNode(
[
'values' => $this->any(Token::BRACKET_L, $parseFn, Token::BRACKET_R),
'loc' => $this->loc($start),
]
);
}
private function parseObject(bool $isConst) : ObjectValueNode
{
$start = $this->lexer->token;
$this->expect(Token::BRACE_L);
$fields = [];
while (! $this->skip(Token::BRACE_R)) {
$fields[] = $this->parseObjectField($isConst);
}
return new ObjectValueNode([
'fields' => new NodeList($fields),
'loc' => $this->loc($start),
]);
}
private function parseObjectField(bool $isConst) : ObjectFieldNode
{
$start = $this->lexer->token;
$name = $this->parseName();
$this->expect(Token::COLON);
return new ObjectFieldNode([
'name' => $name,
'value' => $this->parseValueLiteral($isConst),
'loc' => $this->loc($start),
]);
}
// Implements the parsing rules in the Directives section.
/**
* @throws SyntaxError
*/
private function parseDirectives(bool $isConst) : NodeList
{
$directives = [];
while ($this->peek(Token::AT)) {
$directives[] = $this->parseDirective($isConst);
}
return new NodeList($directives);
}
/**
* @throws SyntaxError
*/
private function parseDirective(bool $isConst) : DirectiveNode
{
$start = $this->lexer->token;
$this->expect(Token::AT);
return new DirectiveNode([
'name' => $this->parseName(),
'arguments' => $this->parseArguments($isConst),
'loc' => $this->loc($start),
]);
}
// Implements the parsing rules in the Types section.
/**
* Handles the Type: TypeName, ListType, and NonNullType parsing rules.
*
* @return ListTypeNode|NamedTypeNode|NonNullTypeNode
*
* @throws SyntaxError
*/
private function parseTypeReference() : TypeNode
{
$start = $this->lexer->token;
if ($this->skip(Token::BRACKET_L)) {
$type = $this->parseTypeReference();
$this->expect(Token::BRACKET_R);
$type = new ListTypeNode([
'type' => $type,
'loc' => $this->loc($start),
]);
} else {
$type = $this->parseNamedType();
}
if ($this->skip(Token::BANG)) {
return new NonNullTypeNode([
'type' => $type,
'loc' => $this->loc($start),
]);
}
return $type;
}
private function parseNamedType() : NamedTypeNode
{
$start = $this->lexer->token;
return new NamedTypeNode([
'name' => $this->parseName(),
'loc' => $this->loc($start),
]);
}
// Implements the parsing rules in the Type Definition section.
/**
* TypeSystemDefinition :
* - SchemaDefinition
* - TypeDefinition
* - TypeExtension
* - DirectiveDefinition
*
* TypeDefinition :
* - ScalarTypeDefinition
* - ObjectTypeDefinition
* - InterfaceTypeDefinition
* - UnionTypeDefinition
* - EnumTypeDefinition
* - InputObjectTypeDefinition
*
* @throws SyntaxError
*/
private function parseTypeSystemDefinition() : TypeSystemDefinitionNode
{
// Many definitions begin with a description and require a lookahead.
$keywordToken = $this->peekDescription()
? $this->lexer->lookahead()
: $this->lexer->token;
if ($keywordToken->kind === Token::NAME) {
switch ($keywordToken->value) {
case 'schema':
return $this->parseSchemaDefinition();
case 'scalar':
return $this->parseScalarTypeDefinition();
case 'type':
return $this->parseObjectTypeDefinition();
case 'interface':
return $this->parseInterfaceTypeDefinition();
case 'union':
return $this->parseUnionTypeDefinition();
case 'enum':
return $this->parseEnumTypeDefinition();
case 'input':
return $this->parseInputObjectTypeDefinition();
case 'extend':
return $this->parseTypeExtension();
case 'directive':
return $this->parseDirectiveDefinition();
}
}
throw $this->unexpected($keywordToken);
}
private function peekDescription() : bool
{
return $this->peek(Token::STRING) || $this->peek(Token::BLOCK_STRING);
}
private function parseDescription() : ?StringValueNode
{
if ($this->peekDescription()) {
return $this->parseStringLiteral();
}
return null;
}
/**
* @throws SyntaxError
*/
private function parseSchemaDefinition() : SchemaDefinitionNode
{
$start = $this->lexer->token;
$this->expectKeyword('schema');
$directives = $this->parseDirectives(true);
$operationTypes = $this->many(
Token::BRACE_L,
function () : OperationTypeDefinitionNode {
return $this->parseOperationTypeDefinition();
},
Token::BRACE_R
);
return new SchemaDefinitionNode([
'directives' => $directives,
'operationTypes' => $operationTypes,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseOperationTypeDefinition() : OperationTypeDefinitionNode
{
$start = $this->lexer->token;
$operation = $this->parseOperationType();
$this->expect(Token::COLON);
$type = $this->parseNamedType();
return new OperationTypeDefinitionNode([
'operation' => $operation,
'type' => $type,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseScalarTypeDefinition() : ScalarTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('scalar');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
return new ScalarTypeDefinitionNode([
'name' => $name,
'directives' => $directives,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseObjectTypeDefinition() : ObjectTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('type');
$name = $this->parseName();
$interfaces = $this->parseImplementsInterfaces();
$directives = $this->parseDirectives(true);
$fields = $this->parseFieldsDefinition();
return new ObjectTypeDefinitionNode([
'name' => $name,
'interfaces' => $interfaces,
'directives' => $directives,
'fields' => $fields,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* ImplementsInterfaces :
* - implements `&`? NamedType
* - ImplementsInterfaces & NamedType
*/
private function parseImplementsInterfaces() : NodeList
{
$types = [];
if ($this->expectOptionalKeyword('implements')) {
// Optional leading ampersand
$this->skip(Token::AMP);
do {
$types[] = $this->parseNamedType();
} while ($this->skip(Token::AMP) ||
// Legacy support for the SDL?
(($this->lexer->options['allowLegacySDLImplementsInterfaces'] ?? false) && $this->peek(Token::NAME))
);
}
return new NodeList($types);
}
/**
* @throws SyntaxError
*/
private function parseFieldsDefinition() : NodeList
{
// Legacy support for the SDL?
if (($this->lexer->options['allowLegacySDLEmptyFields'] ?? false)
&& $this->peek(Token::BRACE_L)
&& $this->lexer->lookahead()->kind === Token::BRACE_R
) {
$this->lexer->advance();
$this->lexer->advance();
/** @phpstan-var NodeList<FieldDefinitionNode&Node> $nodeList */
$nodeList = new NodeList([]);
} else {
/** @phpstan-var NodeList<FieldDefinitionNode&Node> $nodeList */
$nodeList = $this->peek(Token::BRACE_L)
? $this->many(
Token::BRACE_L,
function () : FieldDefinitionNode {
return $this->parseFieldDefinition();
},
Token::BRACE_R
)
: new NodeList([]);
}
return $nodeList;
}
/**
* @throws SyntaxError
*/
private function parseFieldDefinition() : FieldDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$name = $this->parseName();
$args = $this->parseArgumentsDefinition();
$this->expect(Token::COLON);
$type = $this->parseTypeReference();
$directives = $this->parseDirectives(true);
return new FieldDefinitionNode([
'name' => $name,
'arguments' => $args,
'type' => $type,
'directives' => $directives,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseArgumentsDefinition() : NodeList
{
/** @var NodeList<InputValueDefinitionNode&Node> $nodeList */
$nodeList = $this->peek(Token::PAREN_L)
? $this->many(
Token::PAREN_L,
function () : InputValueDefinitionNode {
return $this->parseInputValueDefinition();
},
Token::PAREN_R
)
: new NodeList([]);
return $nodeList;
}
/**
* @throws SyntaxError
*/
private function parseInputValueDefinition() : InputValueDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$name = $this->parseName();
$this->expect(Token::COLON);
$type = $this->parseTypeReference();
$defaultValue = null;
if ($this->skip(Token::EQUALS)) {
$defaultValue = $this->parseConstValue();
}
$directives = $this->parseDirectives(true);
return new InputValueDefinitionNode([
'name' => $name,
'type' => $type,
'defaultValue' => $defaultValue,
'directives' => $directives,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseInterfaceTypeDefinition() : InterfaceTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('interface');
$name = $this->parseName();
$interfaces = $this->parseImplementsInterfaces();
$directives = $this->parseDirectives(true);
$fields = $this->parseFieldsDefinition();
return new InterfaceTypeDefinitionNode([
'name' => $name,
'directives' => $directives,
'interfaces' => $interfaces,
'fields' => $fields,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* UnionTypeDefinition :
* - Description? union Name Directives[Const]? UnionMemberTypes?
*
* @throws SyntaxError
*/
private function parseUnionTypeDefinition() : UnionTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('union');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$types = $this->parseUnionMemberTypes();
return new UnionTypeDefinitionNode([
'name' => $name,
'directives' => $directives,
'types' => $types,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* UnionMemberTypes :
* - = `|`? NamedType
* - UnionMemberTypes | NamedType
*/
private function parseUnionMemberTypes() : NodeList
{
$types = [];
if ($this->skip(Token::EQUALS)) {
// Optional leading pipe
$this->skip(Token::PIPE);
do {
$types[] = $this->parseNamedType();
} while ($this->skip(Token::PIPE));
}
return new NodeList($types);
}
/**
* @throws SyntaxError
*/
private function parseEnumTypeDefinition() : EnumTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('enum');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$values = $this->parseEnumValuesDefinition();
return new EnumTypeDefinitionNode([
'name' => $name,
'directives' => $directives,
'values' => $values,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseEnumValuesDefinition() : NodeList
{
/** @var NodeList<EnumValueDefinitionNode&Node> $nodeList */
$nodeList = $this->peek(Token::BRACE_L)
? $this->many(
Token::BRACE_L,
function () : EnumValueDefinitionNode {
return $this->parseEnumValueDefinition();
},
Token::BRACE_R
)
: new NodeList([]);
return $nodeList;
}
/**
* @throws SyntaxError
*/
private function parseEnumValueDefinition() : EnumValueDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$name = $this->parseName();
$directives = $this->parseDirectives(true);
return new EnumValueDefinitionNode([
'name' => $name,
'directives' => $directives,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseInputObjectTypeDefinition() : InputObjectTypeDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('input');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$fields = $this->parseInputFieldsDefinition();
return new InputObjectTypeDefinitionNode([
'name' => $name,
'directives' => $directives,
'fields' => $fields,
'loc' => $this->loc($start),
'description' => $description,
]);
}
/**
* @throws SyntaxError
*/
private function parseInputFieldsDefinition() : NodeList
{
/** @var NodeList<InputValueDefinitionNode&Node> $nodeList */
$nodeList = $this->peek(Token::BRACE_L)
? $this->many(
Token::BRACE_L,
function () : InputValueDefinitionNode {
return $this->parseInputValueDefinition();
},
Token::BRACE_R
)
: new NodeList([]);
return $nodeList;
}
/**
* TypeExtension :
* - ScalarTypeExtension
* - ObjectTypeExtension
* - InterfaceTypeExtension
* - UnionTypeExtension
* - EnumTypeExtension
* - InputObjectTypeDefinition
*
* @throws SyntaxError
*/
private function parseTypeExtension() : TypeExtensionNode
{
$keywordToken = $this->lexer->lookahead();
if ($keywordToken->kind === Token::NAME) {
switch ($keywordToken->value) {
case 'schema':
return $this->parseSchemaTypeExtension();
case 'scalar':
return $this->parseScalarTypeExtension();
case 'type':
return $this->parseObjectTypeExtension();
case 'interface':
return $this->parseInterfaceTypeExtension();
case 'union':
return $this->parseUnionTypeExtension();
case 'enum':
return $this->parseEnumTypeExtension();
case 'input':
return $this->parseInputObjectTypeExtension();
}
}
throw $this->unexpected($keywordToken);
}
/**
* @throws SyntaxError
*/
private function parseSchemaTypeExtension() : SchemaTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('schema');
$directives = $this->parseDirectives(true);
$operationTypes = $this->peek(Token::BRACE_L)
? $this->many(
Token::BRACE_L,
[$this, 'parseOperationTypeDefinition'],
Token::BRACE_R
)
: new NodeList([]);
if (count($directives) === 0 && count($operationTypes) === 0) {
$this->unexpected();
}
return new SchemaTypeExtensionNode([
'directives' => $directives,
'operationTypes' => $operationTypes,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseScalarTypeExtension() : ScalarTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('scalar');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
if (count($directives) === 0) {
throw $this->unexpected();
}
return new ScalarTypeExtensionNode([
'name' => $name,
'directives' => $directives,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseObjectTypeExtension() : ObjectTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('type');
$name = $this->parseName();
$interfaces = $this->parseImplementsInterfaces();
$directives = $this->parseDirectives(true);
$fields = $this->parseFieldsDefinition();
if (count($interfaces) === 0 &&
count($directives) === 0 &&
count($fields) === 0
) {
throw $this->unexpected();
}
return new ObjectTypeExtensionNode([
'name' => $name,
'interfaces' => $interfaces,
'directives' => $directives,
'fields' => $fields,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseInterfaceTypeExtension() : InterfaceTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('interface');
$name = $this->parseName();
$interfaces = $this->parseImplementsInterfaces();
$directives = $this->parseDirectives(true);
$fields = $this->parseFieldsDefinition();
if (count($interfaces) === 0
&& count($directives) === 0
&& count($fields) === 0
) {
throw $this->unexpected();
}
return new InterfaceTypeExtensionNode([
'name' => $name,
'directives' => $directives,
'interfaces' => $interfaces,
'fields' => $fields,
'loc' => $this->loc($start),
]);
}
/**
* UnionTypeExtension :
* - extend union Name Directives[Const]? UnionMemberTypes
* - extend union Name Directives[Const]
*
* @throws SyntaxError
*/
private function parseUnionTypeExtension() : UnionTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('union');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$types = $this->parseUnionMemberTypes();
if (count($directives) === 0 && count($types) === 0) {
throw $this->unexpected();
}
return new UnionTypeExtensionNode([
'name' => $name,
'directives' => $directives,
'types' => $types,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseEnumTypeExtension() : EnumTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('enum');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$values = $this->parseEnumValuesDefinition();
if (count($directives) === 0 &&
count($values) === 0
) {
throw $this->unexpected();
}
return new EnumTypeExtensionNode([
'name' => $name,
'directives' => $directives,
'values' => $values,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseInputObjectTypeExtension() : InputObjectTypeExtensionNode
{
$start = $this->lexer->token;
$this->expectKeyword('extend');
$this->expectKeyword('input');
$name = $this->parseName();
$directives = $this->parseDirectives(true);
$fields = $this->parseInputFieldsDefinition();
if (count($directives) === 0 &&
count($fields) === 0
) {
throw $this->unexpected();
}
return new InputObjectTypeExtensionNode([
'name' => $name,
'directives' => $directives,
'fields' => $fields,
'loc' => $this->loc($start),
]);
}
/**
* DirectiveDefinition :
* - Description? directive @ Name ArgumentsDefinition? `repeatable`? on DirectiveLocations
*
* @throws SyntaxError
*/
private function parseDirectiveDefinition() : DirectiveDefinitionNode
{
$start = $this->lexer->token;
$description = $this->parseDescription();
$this->expectKeyword('directive');
$this->expect(Token::AT);
$name = $this->parseName();
$args = $this->parseArgumentsDefinition();
$repeatable = $this->expectOptionalKeyword('repeatable');
$this->expectKeyword('on');
$locations = $this->parseDirectiveLocations();
return new DirectiveDefinitionNode([
'name' => $name,
'description' => $description,
'arguments' => $args,
'repeatable' => $repeatable,
'locations' => $locations,
'loc' => $this->loc($start),
]);
}
/**
* @throws SyntaxError
*/
private function parseDirectiveLocations() : NodeList
{
// Optional leading pipe
$this->skip(Token::PIPE);
$locations = [];
do {
$locations[] = $this->parseDirectiveLocation();
} while ($this->skip(Token::PIPE));
return new NodeList($locations);
}
/**
* @throws SyntaxError
*/
private function parseDirectiveLocation() : NameNode
{
$start = $this->lexer->token;
$name = $this->parseName();
if (DirectiveLocation::has($name->value)) {
return $name;
}
throw $this->unexpected($start);
}
}

vendor/webonyx/graphql-php/src/Language/Parser.php line 521