/**
* @param $code
* @return string
*/
public static function printCharCode($code)
{
if (null === $code) {
return '<EOF>';
}
return $code < 0x7f ? json_encode(Utils::chr($code)) : '"\\u' . dechex($code) . '"';
}
/**
* ScalarType constructor.
*/
public function __construct()
{
if (!isset($this->name)) {
$this->name = $this->tryInferName();
}
Utils::invariant($this->name, 'Type must be named.');
}
public function parseValue($value)
{
if (!filter_var($value, FILTER_VALIDATE_EMAIL)) {
throw new \Exception('Cannot represent value as email: ' . Utils::printSafe($value));
}
return $value;
}
public function __invoke(ValidationContext $context)
{
return [Node::FIELD => function (Field $fieldAST) use($context) {
$fieldDef = $context->getFieldDef();
if (!$fieldDef) {
return Visitor::skipNode();
}
$errors = [];
$argASTs = $fieldAST->arguments ?: [];
$argASTMap = Utils::keyMap($argASTs, function (Argument $arg) {
return $arg->name->value;
});
foreach ($fieldDef->args as $argDef) {
$argAST = isset($argASTMap[$argDef->name]) ? $argASTMap[$argDef->name] : null;
if (!$argAST && $argDef->getType() instanceof NonNull) {
$errors[] = new Error(Messages::missingArgMessage($fieldAST->name->value, $argDef->name, $argDef->getType()), [$fieldAST]);
}
}
$argDefMap = Utils::keyMap($fieldDef->args, function ($def) {
return $def->name;
});
foreach ($argASTs as $argAST) {
$argDef = $argDefMap[$argAST->name->value];
if ($argDef && !DocumentValidator::isValidLiteralValue($argAST->value, $argDef->getType())) {
$errors[] = new Error(Messages::badValueMessage($argAST->name->value, $argDef->getType(), Printer::doPrint($argAST->value)), [$argAST->value]);
}
}
return !empty($errors) ? $errors : null;
}];
}
private function doTypesOverlap($t1, $t2)
{
if ($t1 === $t2) {
return true;
}
if ($t1 instanceof ObjectType) {
if ($t2 instanceof ObjectType) {
return false;
}
return in_array($t1, $t2->getPossibleTypes());
}
if ($t1 instanceof InterfaceType || $t1 instanceof UnionType) {
if ($t2 instanceof ObjectType) {
return in_array($t2, $t1->getPossibleTypes());
}
$t1TypeNames = Utils::keyMap($t1->getPossibleTypes(), function ($type) {
return $type->name;
});
foreach ($t2->getPossibleTypes() as $type) {
if (!empty($t1TypeNames[$type->name])) {
return true;
}
}
}
return false;
}
public function parseValue($value)
{
if (!is_string($value) || !filter_var($value, FILTER_VALIDATE_URL)) {
throw new \Exception('Cannot represent value as URL:' . Utils::printSafe($value));
}
return $value;
}
/**
* @param $name
* @return FieldDefinition
* @throws \Exception
*/
public function getField($name)
{
if (null === $this->fields) {
$this->getFields();
}
Utils::invariant(isset($this->fields[$name]), 'Field "%s" is not defined for type "%s"', $name, $this->name);
return $this->fields[$name];
}
/**
* Parses an externally provided value (query variable) to use as an input
*
* @param mixed $value
* @return mixed
*/
public function parseValue($value)
{
if (!is_string($value) || !filter_var($value, FILTER_VALIDATE_URL)) {
// quite naive, but after all this is example
throw new \UnexpectedValueException("Cannot represent value as URL: " . Utils::printSafe($value));
}
return $value;
}
private function getTypeASTName(Type $typeAST)
{
if ($typeAST->kind === Node::NAME) {
return $typeAST->value;
}
Utils::invariant($typeAST->type, 'Must be wrapping type');
return $this->getTypeASTName($typeAST->type);
}
private function withModifiers($types)
{
return array_merge(Utils::map($types, function ($type) {
return Type::listOf($type);
}), Utils::map($types, function ($type) {
return Type::nonNull($type);
}), Utils::map($types, function ($type) {
return Type::nonNull(Type::listOf($type));
}));
}
/**
* @param $value
* @return float|null
*/
private function coerceFloat($value)
{
if ($value === '') {
throw new InvariantViolation('Float cannot represent non numeric value: (empty string)');
}
if (is_numeric($value) || $value === true || $value === false) {
return (double) $value;
}
throw new InvariantViolation('Float cannot represent non numeric value: ' . Utils::printSafe($value));
}
public function __construct($config)
{
Config::validate($config, ['name' => Config::STRING | Config::REQUIRED, 'values' => Config::arrayOf(['name' => Config::STRING | Config::REQUIRED, 'value' => Config::ANY, 'deprecationReason' => Config::STRING, 'description' => Config::STRING], Config::KEY_AS_NAME), 'description' => Config::STRING]);
$this->name = $config['name'];
$this->description = isset($config['description']) ? $config['description'] : null;
$this->_values = [];
if (!empty($config['values'])) {
foreach ($config['values'] as $name => $value) {
$this->_values[] = Utils::assign(new EnumValueDefinition(), $value + ['name' => $name]);
}
}
}
/**
* Return implementations of `type` that include `fieldName` as a valid field.
*
* @param Schema $schema
* @param AbstractType $type
* @param $fieldName
* @return array
*/
static function getImplementationsIncludingField(Schema $schema, AbstractType $type, $fieldName)
{
$types = $schema->getPossibleTypes($type);
$types = Utils::filter($types, function ($t) use($fieldName) {
return isset($t->getFields()[$fieldName]);
});
$types = Utils::map($types, function ($t) {
return $t->name;
});
sort($types);
return $types;
}
/**
* @param $value
* @return int|null
*/
private function coerceInt($value)
{
if ($value === '') {
throw new InvariantViolation('Int cannot represent non 32-bit signed integer value: (empty string)');
}
if (false === $value || true === $value) {
return (int) $value;
}
if (is_numeric($value) && $value <= self::MAX_INT && $value >= self::MIN_INT) {
return (int) $value;
}
throw new InvariantViolation('Int cannot represent non 32-bit signed integer value: ' . Utils::printSafe($value));
}
public function __invoke(ValidationContext $context)
{
$operationCount = 0;
return [NodeKind::DOCUMENT => function (DocumentNode $node) use(&$operationCount) {
$tmp = Utils::filter($node->definitions, function ($definition) {
return $definition->kind === NodeKind::OPERATION_DEFINITION;
});
$operationCount = count($tmp);
}, NodeKind::OPERATION_DEFINITION => function (OperationDefinitionNode $node) use(&$operationCount, $context) {
if (!$node->name && $operationCount > 1) {
$context->reportError(new Error(self::anonOperationNotAloneMessage(), [$node]));
}
}];
}
public function __construct($config)
{
Config::validate($config, ['name' => Config::STRING | Config::REQUIRED, 'types' => Config::arrayOf(Config::OBJECT_TYPE | Config::REQUIRED), 'resolveType' => Config::CALLBACK, 'description' => Config::STRING]);
Utils::invariant(!empty($config['types']), "");
/**
* Optionally provide a custom type resolver function. If one is not provided,
* the default implemenation will call `isTypeOf` on each implementing
* Object type.
*/
$this->name = $config['name'];
$this->description = isset($config['description']) ? $config['description'] : null;
$this->_types = $config['types'];
$this->_resolveType = isset($config['resolveType']) ? $config['resolveType'] : null;
}
/**
* @return ObjectType[]
*/
public function getTypes()
{
if (null === $this->types) {
if ($this->config['types'] instanceof \Closure) {
$types = call_user_func($this->config['types']);
} else {
$types = $this->config['types'];
}
Utils::invariant(is_array($types), 'Option "types" of union "%s" is expected to return array of types (or closure returning array of types)', $this->name);
$this->types = [];
foreach ($types as $type) {
$this->types[] = Type::resolve($type);
}
}
return $this->types;
}
public function __invoke(ValidationContext $context)
{
return [Node::ARGUMENT => function (Argument $node) use($context) {
$fieldDef = $context->getFieldDef();
if ($fieldDef) {
$argDef = null;
foreach ($fieldDef->args as $arg) {
if ($arg->name === $node->name->value) {
$argDef = $arg;
break;
}
}
if (!$argDef) {
$parentType = $context->getParentType();
Utils::invariant($parentType);
return new Error(Messages::unknownArgMessage($node->name->value, $fieldDef->name, $parentType->name), [$node]);
}
}
}];
}
public function __invoke(ValidationContext $context)
{
return [NodeKind::ARGUMENT => function (ArgumentNode $node, $key, $parent, $path, $ancestors) use($context) {
$argumentOf = $ancestors[count($ancestors) - 1];
if ($argumentOf->kind === NodeKind::FIELD) {
$fieldDef = $context->getFieldDef();
if ($fieldDef) {
$fieldArgDef = null;
foreach ($fieldDef->args as $arg) {
if ($arg->name === $node->name->value) {
$fieldArgDef = $arg;
break;
}
}
if (!$fieldArgDef) {
$parentType = $context->getParentType();
Utils::invariant($parentType);
$context->reportError(new Error(self::unknownArgMessage($node->name->value, $fieldDef->name, $parentType->name), [$node]));
}
}
} else {
if ($argumentOf->kind === NodeKind::DIRECTIVE) {
$directive = $context->getDirective();
if ($directive) {
$directiveArgDef = null;
foreach ($directive->args as $arg) {
if ($arg->name === $node->name->value) {
$directiveArgDef = $arg;
break;
}
}
if (!$directiveArgDef) {
$context->reportError(new Error(self::unknownDirectiveArgMessage($node->name->value, $directive->name), [$node]));
}
}
}
}
}];
}
private function detectCycleRecursive(FragmentDefinition $fragment, ValidationContext $context)
{
$fragmentName = $fragment->name->value;
$this->visitedFrags[$fragmentName] = true;
$spreadNodes = $context->getFragmentSpreads($fragment);
if (empty($spreadNodes)) {
return;
}
$this->spreadPathIndexByName[$fragmentName] = count($this->spreadPath);
for ($i = 0; $i < count($spreadNodes); $i++) {
$spreadNode = $spreadNodes[$i];
$spreadName = $spreadNode->name->value;
$cycleIndex = isset($this->spreadPathIndexByName[$spreadName]) ? $this->spreadPathIndexByName[$spreadName] : null;
if ($cycleIndex === null) {
$this->spreadPath[] = $spreadNode;
if (empty($this->visitedFrags[$spreadName])) {
$spreadFragment = $context->getFragment($spreadName);
if ($spreadFragment) {
$this->detectCycleRecursive($spreadFragment, $context);
}
}
array_pop($this->spreadPath);
} else {
$cyclePath = array_slice($this->spreadPath, $cycleIndex);
$nodes = $cyclePath;
if (is_array($spreadNode)) {
$nodes = array_merge($nodes, $spreadNode);
} else {
$nodes[] = $spreadNode;
}
$context->reportError(new Error(self::cycleErrorMessage($spreadName, Utils::map($cyclePath, function ($s) {
return $s->name->value;
})), $nodes));
}
}
$this->spreadPathIndexByName[$fragmentName] = null;
}
public static function resolve($type)
{
if (is_callable($type)) {
$type = $type();
}
Utils::invariant($type instanceof Type, 'Expecting instance of ' . __CLASS__ . ' (or callable returning instance of that type), got "%s"', Utils::getVariableType($type));
return $type;
}
/**
* @param $typeName
* @param $key
* @param $value
* @param $def
* @param $pathStr
* @throws \Exception
*/
private static function validateEntry($typeName, $key, $value, $def, $pathStr)
{
$type = Utils::getVariableType($value);
$err = 'Error in "' . $typeName . '" type definition: expecting %s at "' . $pathStr . '", but got "' . $type . '"';
if ($def instanceof \stdClass) {
if ($def->flags & self::REQUIRED === 0 && $value === null) {
return;
}
if (($def->flags & self::MAYBE_THUNK) > 0) {
Utils::invariant(is_array($value) || is_callable($value), $err, 'array or callable');
} else {
Utils::invariant(is_array($value), $err, 'array');
}
if (!empty($def->isMap)) {
if ($def->flags & self::KEY_AS_NAME) {
$value += ['name' => $key];
}
self::validateMap($typeName, $value, $def->definition, $pathStr);
} else {
if (!empty($def->isArray)) {
if ($def->flags & self::REQUIRED) {
Utils::invariant(!empty($value), 'Error in "' . $typeName . '" type definition: ' . "Value at '{$pathStr}' cannot be empty array");
}
$err = 'Error in "' . $typeName . '" type definition: ' . "Each entry at '{$pathStr}' must be an array, but '%s' is '%s'";
foreach ($value as $arrKey => $arrValue) {
if (is_array($def->definition)) {
if ($def->flags & self::MAYBE_TYPE && $arrValue instanceof Type) {
$arrValue = ['type' => $arrValue];
}
if ($def->flags & self::MAYBE_NAME && is_string($arrValue)) {
$arrValue = ['name' => $arrValue];
}
Utils::invariant(is_array($arrValue), $err, $arrKey, Utils::getVariableType($arrValue));
if ($def->flags & self::KEY_AS_NAME) {
$arrValue += ['name' => $arrKey];
}
self::validateMap($typeName, $arrValue, $def->definition, "{$pathStr}:{$arrKey}");
} else {
self::validateEntry($typeName, $arrKey, $arrValue, $def->definition, "{$pathStr}:{$arrKey}");
}
}
} else {
throw new InvariantViolation('Error in "' . $typeName . '" type definition: ' . "unexpected definition: " . print_r($def, true));
}
}
} else {
Utils::invariant(is_int($def), 'Error in "' . $typeName . '" type definition: ' . "Definition for '{$pathStr}' is expected to be single integer value");
if ($def & self::REQUIRED) {
Utils::invariant($value !== null, 'Value at "%s" can not be null', $pathStr);
}
if (null === $value) {
return;
// Allow nulls for non-required fields
}
switch (true) {
case $def & self::ANY:
break;
case $def & self::BOOLEAN:
Utils::invariant(is_bool($value), $err, 'boolean');
break;
case $def & self::STRING:
Utils::invariant(is_string($value), $err, 'string');
break;
case $def & self::NUMERIC:
Utils::invariant(is_numeric($value), $err, 'numeric');
break;
case $def & self::FLOAT:
Utils::invariant(is_float($value), $err, 'float');
break;
case $def & self::INT:
Utils::invariant(is_int($value), $err, 'int');
break;
case $def & self::CALLBACK:
Utils::invariant(is_callable($value), $err, 'callable');
break;
case $def & self::SCALAR:
Utils::invariant(is_scalar($value), $err, 'scalar');
break;
case $def & self::NAME:
Utils::invariant(preg_match('~^[_a-zA-Z][_a-zA-Z0-9]*$~', $value), 'Names must match /^[_a-zA-Z][_a-zA-Z0-9]*$/ but "%s" does not.', $value);
break;
case $def & self::INPUT_TYPE:
Utils::invariant(is_callable($value) || $value instanceof InputType, $err, 'callable or InputType definition');
break;
case $def & self::OUTPUT_TYPE:
Utils::invariant(is_callable($value) || $value instanceof OutputType, $err, 'callable or OutputType definition');
break;
case $def & self::INTERFACE_TYPE:
Utils::invariant(is_callable($value) || $value instanceof InterfaceType, $err, 'callable or InterfaceType definition');
break;
case $def & self::OBJECT_TYPE:
Utils::invariant(is_callable($value) || $value instanceof ObjectType, $err, 'callable or ObjectType definition');
break;
default:
throw new InvariantViolation("Unexpected validation rule: " . $def);
}
}
}
public function __construct(array $data)
{
Utils::assign($this, $data);
}
/**
* @param callable|Type $type
*/
public function __construct($type)
{
Utils::invariant($type instanceof Type || is_callable($type), 'Expecting instance of GraphQL\\Type\\Definition\\Type or callable returning instance of that class');
$this->ofType = $type;
}
/**
* Complete an Object value by executing all sub-selections.
*
* @param ExecutionContext $exeContext
* @param ObjectType $returnType
* @param $fieldNodes
* @param ResolveInfo $info
* @param array $path
* @param $result
* @return array|Promise|\stdClass
* @throws Error
*/
private static function completeObjectValue(ExecutionContext $exeContext, ObjectType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result)
{
// If there is an isTypeOf predicate function, call it with the
// current result. If isTypeOf returns false, then raise an error rather
// than continuing execution.
if (false === $returnType->isTypeOf($result, $exeContext->contextValue, $info)) {
throw new Error("Expected value of type {$returnType} but got: " . Utils::getVariableType($result), $fieldNodes);
}
// Collect sub-fields to execute to complete this value.
$subFieldNodes = new \ArrayObject();
$visitedFragmentNames = new \ArrayObject();
foreach ($fieldNodes as $fieldNode) {
if (isset($fieldNode->selectionSet)) {
$subFieldNodes = self::collectFields($exeContext, $returnType, $fieldNode->selectionSet, $subFieldNodes, $visitedFragmentNames);
}
}
return self::executeFields($exeContext, $returnType, $result, $path, $subFieldNodes);
}
/**
* Utility for validators which determines if a value literal AST is valid given
* an input type.
*
* Note that this only validates literal values, variables are assumed to
* provide values of the correct type.
*
* @return array
*/
public static function isValidLiteralValue(Type $type, $valueNode)
{
// A value must be provided if the type is non-null.
if ($type instanceof NonNull) {
if (!$valueNode || $valueNode instanceof NullValueNode) {
return ['Expected "' . Utils::printSafe($type) . '", found null.'];
}
return static::isValidLiteralValue($type->getWrappedType(), $valueNode);
}
if (!$valueNode || $valueNode instanceof NullValueNode) {
return [];
}
// This function only tests literals, and assumes variables will provide
// values of the correct type.
if ($valueNode instanceof VariableNode) {
return [];
}
// Lists accept a non-list value as a list of one.
if ($type instanceof ListOfType) {
$itemType = $type->getWrappedType();
if ($valueNode instanceof ListValueNode) {
$errors = [];
foreach ($valueNode->values as $index => $itemNode) {
$tmp = static::isValidLiteralValue($itemType, $itemNode);
if ($tmp) {
$errors = array_merge($errors, Utils::map($tmp, function ($error) use($index) {
return "In element #{$index}: {$error}";
}));
}
}
return $errors;
} else {
return static::isValidLiteralValue($itemType, $valueNode);
}
}
// Input objects check each defined field and look for undefined fields.
if ($type instanceof InputObjectType) {
if ($valueNode->kind !== NodeKind::OBJECT) {
return ["Expected \"{$type->name}\", found not an object."];
}
$fields = $type->getFields();
$errors = [];
// Ensure every provided field is defined.
$fieldNodes = $valueNode->fields;
foreach ($fieldNodes as $providedFieldNode) {
if (empty($fields[$providedFieldNode->name->value])) {
$errors[] = "In field \"{$providedFieldNode->name->value}\": Unknown field.";
}
}
// Ensure every defined field is valid.
$fieldNodeMap = Utils::keyMap($fieldNodes, function ($fieldNode) {
return $fieldNode->name->value;
});
foreach ($fields as $fieldName => $field) {
$result = static::isValidLiteralValue($field->getType(), isset($fieldNodeMap[$fieldName]) ? $fieldNodeMap[$fieldName]->value : null);
if ($result) {
$errors = array_merge($errors, Utils::map($result, function ($error) use($fieldName) {
return "In field \"{$fieldName}\": {$error}";
}));
}
}
return $errors;
}
if ($type instanceof LeafType) {
// Scalar/Enum input checks to ensure the type can parse the value to
// a non-null value.
$parseResult = $type->parseLiteral($valueNode);
if (null === $parseResult) {
$printed = Printer::doPrint($valueNode);
return ["Expected type \"{$type->name}\", found {$printed}."];
}
return [];
}
throw new InvariantViolation('Must be input type');
}
public function getField($name)
{
Utils::invariant(isset($this->_fields[$name]), 'Field "%s" is not defined for type "%s"', $name, $this->name);
return $this->_fields[$name];
}
/**
* Implements the instructions for completeValue as defined in the
* "Field entries" section of the spec.
*
* If the field type is Non-Null, then this recursively completes the value
* for the inner type. It throws a field error if that completion returns null,
* as per the "Nullability" section of the spec.
*
* If the field type is a List, then this recursively completes the value
* for the inner type on each item in the list.
*
* If the field type is a Scalar or Enum, ensures the completed value is a legal
* value of the type by calling the `serialize` method of GraphQL type
* definition.
*
* Otherwise, the field type expects a sub-selection set, and will complete the
* value by evaluating all sub-selections.
*/
private static function completeValue(ExecutionContext $exeContext, Type $returnType, $fieldASTs, ResolveInfo $info, &$result)
{
// If field type is NonNull, complete for inner type, and throw field error
// if result is null.
if ($returnType instanceof NonNull) {
$completed = self::completeValue($exeContext, $returnType->getWrappedType(), $fieldASTs, $info, $result);
if ($completed === null) {
throw new Error('Cannot return null for non-nullable type.', $fieldASTs instanceof \ArrayObject ? $fieldASTs->getArrayCopy() : $fieldASTs);
}
return $completed;
}
// If result is null-like, return null.
if (null === $result) {
return null;
}
// If field type is List, complete each item in the list with the inner type
if ($returnType instanceof ListOfType) {
$itemType = $returnType->getWrappedType();
Utils::invariant(is_array($result) || $result instanceof \Traversable, 'User Error: expected iterable, but did not find one.');
$tmp = [];
foreach ($result as $item) {
$tmp[] = self::completeValueCatchingError($exeContext, $itemType, $fieldASTs, $info, $item);
}
return $tmp;
}
// If field type is Scalar or Enum, serialize to a valid value, returning
// null if serialization is not possible.
if ($returnType instanceof ScalarType || $returnType instanceof EnumType) {
Utils::invariant(method_exists($returnType, 'serialize'), 'Missing serialize method on type');
return $returnType->serialize($result);
}
// Field type must be Object, Interface or Union and expect sub-selections.
if ($returnType instanceof ObjectType) {
$objectType = $returnType;
} else {
if ($returnType instanceof AbstractType) {
$objectType = $returnType->getObjectType($result, $info);
if ($objectType && !$returnType->isPossibleType($objectType)) {
throw new Error("Runtime Object type \"{$objectType}\" is not a possible type for \"{$returnType}\".");
}
} else {
$objectType = null;
}
}
if (!$objectType) {
return null;
}
// If there is an isTypeOf predicate function, call it with the
// current result. If isTypeOf returns false, then raise an error rather
// than continuing execution.
if (false === $objectType->isTypeOf($result, $info)) {
throw new Error("Expected value of type {$objectType} but got: {$result}.", $fieldASTs);
}
// Collect sub-fields to execute to complete this value.
$subFieldASTs = new \ArrayObject();
$visitedFragmentNames = new \ArrayObject();
for ($i = 0; $i < count($fieldASTs); $i++) {
$selectionSet = $fieldASTs[$i]->selectionSet;
if ($selectionSet) {
$subFieldASTs = self::collectFields($exeContext, $objectType, $selectionSet, $subFieldASTs, $visitedFragmentNames);
}
}
return self::executeFields($exeContext, $objectType, $result, $subFieldASTs);
}
private function subfieldConflicts(array $conflicts, $responseName, FieldNode $ast1, FieldNode $ast2)
{
if (!empty($conflicts)) {
return [[$responseName, Utils::map($conflicts, function ($conflict) {
return $conflict[0];
})], array_reduce($conflicts, function ($allFields, $conflict) {
return array_merge($allFields, $conflict[1]);
}, [$ast1]), array_reduce($conflicts, function ($allFields, $conflict) {
return array_merge($allFields, $conflict[2]);
}, [$ast2])];
}
}
/**
* Produces a PHP value given a GraphQL Value AST.
*
* A GraphQL type must be provided, which will be used to interpret different
* GraphQL Value literals.
*
* | GraphQL Value | PHP Value |
* | -------------------- | ------------- |
* | Input Object | Assoc Array |
* | List | Array |
* | Boolean | Boolean |
* | String | String |
* | Int / Float | Int / Float |
* | Enum Value | Mixed |
*
* @param $valueAST
* @param InputType $type
* @param null $variables
* @return array|null
* @throws \Exception
*/
public static function valueFromAST($valueAST, InputType $type, $variables = null)
{
if ($type instanceof NonNull) {
// Note: we're not checking that the result of valueFromAST is non-null.
// We're assuming that this query has been validated and the value used
// here is of the correct type.
return self::valueFromAST($valueAST, $type->getWrappedType(), $variables);
}
if (!$valueAST) {
return null;
}
if ($valueAST instanceof Variable) {
$variableName = $valueAST->name->value;
if (!$variables || !isset($variables[$variableName])) {
return null;
}
// Note: we're not doing any checking that this variable is correct. We're
// assuming that this query has been validated and the variable usage here
// is of the correct type.
return $variables[$variableName];
}
if ($type instanceof ListOfType) {
$itemType = $type->getWrappedType();
if ($valueAST instanceof ListValue) {
return array_map(function ($itemAST) use($itemType, $variables) {
return self::valueFromAST($itemAST, $itemType, $variables);
}, $valueAST->values);
} else {
return [self::valueFromAST($valueAST, $itemType, $variables)];
}
}
if ($type instanceof InputObjectType) {
$fields = $type->getFields();
if (!$valueAST instanceof ObjectValue) {
return null;
}
$fieldASTs = Utils::keyMap($valueAST->fields, function ($field) {
return $field->name->value;
});
$values = [];
foreach ($fields as $field) {
$fieldAST = isset($fieldASTs[$field->name]) ? $fieldASTs[$field->name] : null;
$fieldValue = self::valueFromAST($fieldAST ? $fieldAST->value : null, $field->getType(), $variables);
if (null === $fieldValue) {
$fieldValue = $field->defaultValue;
}
if (null !== $fieldValue) {
$values[$field->name] = $fieldValue;
}
}
return $values;
}
if ($type instanceof LeafType) {
return $type->parseLiteral($valueAST);
}
throw new InvariantViolation('Must be input type');
}