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Refactored executor: now works as instance with exeContext and promise adapter as properties

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This commit is contained in:
vladar 2016-12-01 17:09:22 +07:00
parent f3fca81e9d
commit 77244d3aab
1 changed files with 136 additions and 128 deletions
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264
src/Executor/Executor.php
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@ -103,40 +103,10 @@ class Executor
} }
$exeContext = self::buildExecutionContext($schema, $ast, $rootValue, $contextValue, $variableValues, $operationName); $exeContext = self::buildExecutionContext($schema, $ast, $rootValue, $contextValue, $variableValues, $operationName);
if (null === self::$promiseAdapter) { $promiseAdapter = self::$promiseAdapter ?: new GenericPromiseAdapter();
static::setPromiseAdapter(new GenericPromiseAdapter());
}
try { $executor = new self($exeContext, $promiseAdapter);
$data = self::$promiseAdapter return $executor->executeQuery();
->createPromise(function (callable $resolve) use ($exeContext, $rootValue) {
return $resolve(self::executeOperation($exeContext, $exeContext->operation, $rootValue));
});
if (self::$promiseAdapter->isPromise($data)) {
// Return a Promise that will eventually resolve to the data described by
// The "Response" section of the GraphQL specification.
//
// If errors are encountered while executing a GraphQL field, only that
// field and its descendants will be omitted, and sibling fields will still
// be executed. An execution which encounters errors will still result in a
// resolved Promise.
return $data->then(null, function ($error) use ($exeContext) {
// Errors from sub-fields of a NonNull type may propagate to the top level,
// at which point we still log the error and null the parent field, which
// in this case is the entire response.
$exeContext->addError($error);
return null;
})->then(function ($data) use ($exeContext) {
return new ExecutionResult((array) $data, $exeContext->errors);
});
}
} catch (Error $e) {
$exeContext->addError($e);
$data = null;
}
return new ExecutionResult((array) $data, $exeContext->errors);
} }
/** /**
@ -207,25 +177,80 @@ class Executor
return $exeContext; return $exeContext;
} }
/**
* @var ExecutionContext
*/
private $exeContext;
/**
* @var PromiseAdapter
*/
private $promises;
/**
* Executor constructor.
*
* @param ExecutionContext $context
* @param PromiseAdapter $promiseAdapter
*/
private function __construct(ExecutionContext $context, PromiseAdapter $promiseAdapter)
{
$this->exeContext = $context;
$this->promises = $promiseAdapter;
}
private function executeQuery()
{
try {
$data = $this->promises->createPromise(function (callable $resolve) {
return $resolve($this->executeOperation($this->exeContext->operation, $this->exeContext->rootValue));
});
if ($this->promises->isPromise($data)) {
// Return a Promise that will eventually resolve to the data described by
// The "Response" section of the GraphQL specification.
//
// If errors are encountered while executing a GraphQL field, only that
// field and its descendants will be omitted, and sibling fields will still
// be executed. An execution which encounters errors will still result in a
// resolved Promise.
return $data
->then(null, function ($error) {
// Errors from sub-fields of a NonNull type may propagate to the top level,
// at which point we still log the error and null the parent field, which
// in this case is the entire response.
$this->exeContext->addError($error);
return null;
})->then(function ($data) {
return new ExecutionResult((array) $data, $this->exeContext->errors);
});
}
} catch (Error $e) {
$this->exeContext->addError($e);
$data = null;
}
return new ExecutionResult((array) $data, $this->exeContext->errors);
}
/** /**
* Implements the "Evaluating operations" section of the spec. * Implements the "Evaluating operations" section of the spec.
* *
* @param ExecutionContext $exeContext
* @param OperationDefinitionNode $operation * @param OperationDefinitionNode $operation
* @param $rootValue * @param $rootValue
* @return Promise|\stdClass|array * @return Promise|\stdClass|array
*/ */
private static function executeOperation(ExecutionContext $exeContext, OperationDefinitionNode $operation, $rootValue) private function executeOperation(OperationDefinitionNode $operation, $rootValue)
{ {
$type = self::getOperationRootType($exeContext->schema, $operation); $type = $this->getOperationRootType($this->exeContext->schema, $operation);
$fields = self::collectFields($exeContext, $type, $operation->selectionSet, new \ArrayObject(), new \ArrayObject()); $fields = $this->collectFields($type, $operation->selectionSet, new \ArrayObject(), new \ArrayObject());
$path = []; $path = [];
if ($operation->operation === 'mutation') { if ($operation->operation === 'mutation') {
return self::executeFieldsSerially($exeContext, $type, $rootValue, $path, $fields); return $this->executeFieldsSerially($type, $rootValue, $path, $fields);
} }
return self::executeFields($exeContext, $type, $rootValue, $path, $fields); return $this->executeFields($type, $rootValue, $path, $fields);
} }
@ -237,7 +262,7 @@ class Executor
* @return ObjectType * @return ObjectType
* @throws Error * @throws Error
*/ */
private static function getOperationRootType(Schema $schema, OperationDefinitionNode $operation) private function getOperationRootType(Schema $schema, OperationDefinitionNode $operation)
{ {
switch ($operation->operation) { switch ($operation->operation) {
case 'query': case 'query':
@ -272,25 +297,24 @@ class Executor
* Implements the "Evaluating selection sets" section of the spec * Implements the "Evaluating selection sets" section of the spec
* for "write" mode. * for "write" mode.
* *
* @param ExecutionContext $exeContext
* @param ObjectType $parentType * @param ObjectType $parentType
* @param $sourceValue * @param $sourceValue
* @param $path * @param $path
* @param $fields * @param $fields
* @return Promise|\stdClass|array * @return Promise|\stdClass|array
*/ */
private static function executeFieldsSerially(ExecutionContext $exeContext, ObjectType $parentType, $sourceValue, $path, $fields) private function executeFieldsSerially(ObjectType $parentType, $sourceValue, $path, $fields)
{ {
$results = self::$promiseAdapter->createResolvedPromise([]); $results = $this->promises->createResolvedPromise([]);
$process = function ($results, $responseName, $path, $exeContext, $parentType, $sourceValue, $fieldNodes) { $process = function ($results, $responseName, $path, $parentType, $sourceValue, $fieldNodes) {
$fieldPath = $path; $fieldPath = $path;
$fieldPath[] = $responseName; $fieldPath[] = $responseName;
$result = self::resolveField($exeContext, $parentType, $sourceValue, $fieldNodes, $fieldPath); $result = $this->resolveField($parentType, $sourceValue, $fieldNodes, $fieldPath);
if ($result === self::$UNDEFINED) { if ($result === self::$UNDEFINED) {
return $results; return $results;
} }
if (self::$promiseAdapter->isPromise($result)) { if ($this->promises->isPromise($result)) {
return $result->then(function ($resolvedResult) use ($responseName, $results) { return $result->then(function ($resolvedResult) use ($responseName, $results) {
$results[$responseName] = $resolvedResult; $results[$responseName] = $resolvedResult;
return $results; return $results;
@ -301,16 +325,16 @@ class Executor
}; };
foreach ($fields as $responseName => $fieldNodes) { foreach ($fields as $responseName => $fieldNodes) {
if (self::$promiseAdapter->isPromise($results)) { if ($this->promises->isPromise($results)) {
$results = $results->then(function ($resolvedResults) use ($process, $responseName, $path, $exeContext, $parentType, $sourceValue, $fieldNodes) { $results = $results->then(function ($resolvedResults) use ($process, $responseName, $path, $parentType, $sourceValue, $fieldNodes) {
return $process($resolvedResults, $responseName, $path, $exeContext, $parentType, $sourceValue, $fieldNodes); return $process($resolvedResults, $responseName, $path, $parentType, $sourceValue, $fieldNodes);
}); });
} else { } else {
$results = $process($results, $responseName, $path, $exeContext, $parentType, $sourceValue, $fieldNodes); $results = $process($results, $responseName, $path, $parentType, $sourceValue, $fieldNodes);
} }
} }
if (self::$promiseAdapter->isPromise($results)) { if ($this->promises->isPromise($results)) {
return $results->then(function ($resolvedResults) { return $results->then(function ($resolvedResults) {
return self::fixResultsIfEmptyArray($resolvedResults); return self::fixResultsIfEmptyArray($resolvedResults);
}); });
@ -323,14 +347,13 @@ class Executor
* Implements the "Evaluating selection sets" section of the spec * Implements the "Evaluating selection sets" section of the spec
* for "read" mode. * for "read" mode.
* *
* @param ExecutionContext $exeContext
* @param ObjectType $parentType * @param ObjectType $parentType
* @param $source * @param $source
* @param $path * @param $path
* @param $fields * @param $fields
* @return Promise|\stdClass|array * @return Promise|\stdClass|array
*/ */
private static function executeFields(ExecutionContext $exeContext, ObjectType $parentType, $source, $path, $fields) private function executeFields(ObjectType $parentType, $source, $path, $fields)
{ {
$containsPromise = false; $containsPromise = false;
$finalResults = []; $finalResults = [];
@ -338,11 +361,11 @@ class Executor
foreach ($fields as $responseName => $fieldNodes) { foreach ($fields as $responseName => $fieldNodes) {
$fieldPath = $path; $fieldPath = $path;
$fieldPath[] = $responseName; $fieldPath[] = $responseName;
$result = self::resolveField($exeContext, $parentType, $source, $fieldNodes, $fieldPath); $result = $this->resolveField($parentType, $source, $fieldNodes, $fieldPath);
if ($result === self::$UNDEFINED) { if ($result === self::$UNDEFINED) {
continue; continue;
} }
if (!$containsPromise && self::$promiseAdapter->isPromise($result)) { if (!$containsPromise && $this->promises->isPromise($result)) {
$containsPromise = true; $containsPromise = true;
} }
$finalResults[$responseName] = $result; $finalResults[$responseName] = $result;
@ -357,7 +380,7 @@ class Executor
// of resolving that field, which is possibly a promise. Return // of resolving that field, which is possibly a promise. Return
// a promise that will return this same map, but with any // a promise that will return this same map, but with any
// promises replaced with the values they resolved to. // promises replaced with the values they resolved to.
return self::$promiseAdapter->createPromiseAll($finalResults)->then(function ($resolvedResults) { return $this->promises->createPromiseAll($finalResults)->then(function ($resolvedResults) {
return self::fixResultsIfEmptyArray($resolvedResults); return self::fixResultsIfEmptyArray($resolvedResults);
}); });
} }
@ -385,7 +408,6 @@ class Executor
* returns and Interface or Union type, the "runtime type" will be the actual * returns and Interface or Union type, the "runtime type" will be the actual
* Object type returned by that field. * Object type returned by that field.
* *
* @param ExecutionContext $exeContext
* @param ObjectType $runtimeType * @param ObjectType $runtimeType
* @param SelectionSetNode $selectionSet * @param SelectionSetNode $selectionSet
* @param $fields * @param $fields
@ -393,18 +415,18 @@ class Executor
* *
* @return \ArrayObject * @return \ArrayObject
*/ */
private static function collectFields( private function collectFields(
ExecutionContext $exeContext,
ObjectType $runtimeType, ObjectType $runtimeType,
SelectionSetNode $selectionSet, SelectionSetNode $selectionSet,
$fields, $fields,
$visitedFragmentNames $visitedFragmentNames
) )
{ {
$exeContext = $this->exeContext;
foreach ($selectionSet->selections as $selection) { foreach ($selectionSet->selections as $selection) {
switch ($selection->kind) { switch ($selection->kind) {
case NodeKind::FIELD: case NodeKind::FIELD:
if (!self::shouldIncludeNode($exeContext, $selection->directives)) { if (!$this->shouldIncludeNode($selection->directives)) {
continue; continue;
} }
$name = self::getFieldEntryKey($selection); $name = self::getFieldEntryKey($selection);
@ -414,13 +436,12 @@ class Executor
$fields[$name][] = $selection; $fields[$name][] = $selection;
break; break;
case NodeKind::INLINE_FRAGMENT: case NodeKind::INLINE_FRAGMENT:
if (!self::shouldIncludeNode($exeContext, $selection->directives) || if (!$this->shouldIncludeNode($selection->directives) ||
!self::doesFragmentConditionMatch($exeContext, $selection, $runtimeType) !$this->doesFragmentConditionMatch($selection, $runtimeType)
) { ) {
continue; continue;
} }
self::collectFields( $this->collectFields(
$exeContext,
$runtimeType, $runtimeType,
$selection->selectionSet, $selection->selectionSet,
$fields, $fields,
@ -429,18 +450,17 @@ class Executor
break; break;
case NodeKind::FRAGMENT_SPREAD: case NodeKind::FRAGMENT_SPREAD:
$fragName = $selection->name->value; $fragName = $selection->name->value;
if (!empty($visitedFragmentNames[$fragName]) || !self::shouldIncludeNode($exeContext, $selection->directives)) { if (!empty($visitedFragmentNames[$fragName]) || !$this->shouldIncludeNode($selection->directives)) {
continue; continue;
} }
$visitedFragmentNames[$fragName] = true; $visitedFragmentNames[$fragName] = true;
/** @var FragmentDefinitionNode|null $fragment */ /** @var FragmentDefinitionNode|null $fragment */
$fragment = isset($exeContext->fragments[$fragName]) ? $exeContext->fragments[$fragName] : null; $fragment = isset($exeContext->fragments[$fragName]) ? $exeContext->fragments[$fragName] : null;
if (!$fragment || !self::doesFragmentConditionMatch($exeContext, $fragment, $runtimeType)) { if (!$fragment || !$this->doesFragmentConditionMatch($fragment, $runtimeType)) {
continue; continue;
} }
self::collectFields( $this->collectFields(
$exeContext,
$runtimeType, $runtimeType,
$fragment->selectionSet, $fragment->selectionSet,
$fields, $fields,
@ -456,12 +476,12 @@ class Executor
* Determines if a field should be included based on the @include and @skip * Determines if a field should be included based on the @include and @skip
* directives, where @skip has higher precedence than @include. * directives, where @skip has higher precedence than @include.
* *
* @param ExecutionContext $exeContext
* @param $directives * @param $directives
* @return bool * @return bool
*/ */
private static function shouldIncludeNode(ExecutionContext $exeContext, $directives) private function shouldIncludeNode($directives)
{ {
$exeContext = $this->exeContext;
$skipDirective = Directive::skipDirective(); $skipDirective = Directive::skipDirective();
$includeDirective = Directive::includeDirective(); $includeDirective = Directive::includeDirective();
@ -499,12 +519,11 @@ class Executor
/** /**
* Determines if a fragment is applicable to the given type. * Determines if a fragment is applicable to the given type.
* *
* @param ExecutionContext $exeContext
* @param $fragment * @param $fragment
* @param ObjectType $type * @param ObjectType $type
* @return bool * @return bool
*/ */
private static function doesFragmentConditionMatch(ExecutionContext $exeContext,/* FragmentDefinitionNode | InlineFragmentNode*/ $fragment, ObjectType $type) private function doesFragmentConditionMatch(/* FragmentDefinitionNode | InlineFragmentNode*/ $fragment, ObjectType $type)
{ {
$typeConditionNode = $fragment->typeCondition; $typeConditionNode = $fragment->typeCondition;
@ -512,12 +531,12 @@ class Executor
return true; return true;
} }
$conditionalType = Utils\TypeInfo::typeFromAST($exeContext->schema, $typeConditionNode); $conditionalType = Utils\TypeInfo::typeFromAST($this->exeContext->schema, $typeConditionNode);
if ($conditionalType === $type) { if ($conditionalType === $type) {
return true; return true;
} }
if ($conditionalType instanceof AbstractType) { if ($conditionalType instanceof AbstractType) {
return $exeContext->schema->isPossibleType($conditionalType, $type); return $this->exeContext->schema->isPossibleType($conditionalType, $type);
} }
return false; return false;
} }
@ -539,7 +558,6 @@ class Executor
* then calls completeValue to complete promises, serialize scalars, or execute * then calls completeValue to complete promises, serialize scalars, or execute
* the sub-selection-set for objects. * the sub-selection-set for objects.
* *
* @param ExecutionContext $exeContext
* @param ObjectType $parentType * @param ObjectType $parentType
* @param $source * @param $source
* @param $fieldNodes * @param $fieldNodes
@ -547,13 +565,13 @@ class Executor
* *
* @return array|\Exception|mixed|null * @return array|\Exception|mixed|null
*/ */
private static function resolveField(ExecutionContext $exeContext, ObjectType $parentType, $source, $fieldNodes, $path) private function resolveField(ObjectType $parentType, $source, $fieldNodes, $path)
{ {
$exeContext = $this->exeContext;
$fieldNode = $fieldNodes[0]; $fieldNode = $fieldNodes[0];
$fieldName = $fieldNode->name->value; $fieldName = $fieldNode->name->value;
$fieldDef = $this->getFieldDef($exeContext->schema, $parentType, $fieldName);
$fieldDef = self::getFieldDef($exeContext->schema, $parentType, $fieldName);
if (!$fieldDef) { if (!$fieldDef) {
return self::$UNDEFINED; return self::$UNDEFINED;
@ -592,8 +610,7 @@ class Executor
// Get the resolve function, regardless of if its result is normal // Get the resolve function, regardless of if its result is normal
// or abrupt (error). // or abrupt (error).
$result = self::resolveOrError( $result = $this->resolveOrError(
$exeContext,
$fieldDef, $fieldDef,
$fieldNode, $fieldNode,
$resolveFn, $resolveFn,
@ -602,8 +619,7 @@ class Executor
$info $info
); );
$result = self::completeValueCatchingError( $result = $this->completeValueCatchingError(
$exeContext,
$returnType, $returnType,
$fieldNodes, $fieldNodes,
$info, $info,
@ -618,7 +634,6 @@ class Executor
* Isolates the "ReturnOrAbrupt" behavior to not de-opt the `resolveField` * Isolates the "ReturnOrAbrupt" behavior to not de-opt the `resolveField`
* function. Returns the result of resolveFn or the abrupt-return Error object. * function. Returns the result of resolveFn or the abrupt-return Error object.
* *
* @param ExecutionContext $exeContext
* @param FieldDefinition $fieldDef * @param FieldDefinition $fieldDef
* @param FieldNode $fieldNode * @param FieldNode $fieldNode
* @param callable $resolveFn * @param callable $resolveFn
@ -627,7 +642,7 @@ class Executor
* @param ResolveInfo $info * @param ResolveInfo $info
* @return \Exception|mixed * @return \Exception|mixed
*/ */
private static function resolveOrError($exeContext, $fieldDef, $fieldNode, $resolveFn, $source, $context, $info) private function resolveOrError($fieldDef, $fieldNode, $resolveFn, $source, $context, $info)
{ {
try { try {
// Build hash of arguments from the field.arguments AST, using the // Build hash of arguments from the field.arguments AST, using the
@ -635,7 +650,7 @@ class Executor
$args = Values::getArgumentValues( $args = Values::getArgumentValues(
$fieldDef, $fieldDef,
$fieldNode, $fieldNode,
$exeContext->variableValues $this->exeContext->variableValues
); );
return call_user_func($resolveFn, $source, $args, $context, $info); return call_user_func($resolveFn, $source, $args, $context, $info);
@ -648,7 +663,6 @@ class Executor
* This is a small wrapper around completeValue which detects and logs errors * This is a small wrapper around completeValue which detects and logs errors
* in the execution context. * in the execution context.
* *
* @param ExecutionContext $exeContext
* @param Type $returnType * @param Type $returnType
* @param $fieldNodes * @param $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -656,8 +670,7 @@ class Executor
* @param $result * @param $result
* @return array|null|Promise * @return array|null|Promise
*/ */
private static function completeValueCatchingError( private function completeValueCatchingError(
ExecutionContext $exeContext,
Type $returnType, Type $returnType,
$fieldNodes, $fieldNodes,
ResolveInfo $info, ResolveInfo $info,
@ -665,11 +678,12 @@ class Executor
$result $result
) )
{ {
$exeContext = $this->exeContext;
// If the field type is non-nullable, then it is resolved without any // If the field type is non-nullable, then it is resolved without any
// protection from errors. // protection from errors.
if ($returnType instanceof NonNull) { if ($returnType instanceof NonNull) {
return self::completeValueWithLocatedError( return $this->completeValueWithLocatedError(
$exeContext,
$returnType, $returnType,
$fieldNodes, $fieldNodes,
$info, $info,
@ -681,18 +695,17 @@ class Executor
// Otherwise, error protection is applied, logging the error and resolving // Otherwise, error protection is applied, logging the error and resolving
// a null value for this field if one is encountered. // a null value for this field if one is encountered.
try { try {
$completed = self::completeValueWithLocatedError( $completed = $this->completeValueWithLocatedError(
$exeContext,
$returnType, $returnType,
$fieldNodes, $fieldNodes,
$info, $info,
$path, $path,
$result $result
); );
if (self::$promiseAdapter->isPromise($completed)) { if ($this->promises->isPromise($completed)) {
return $completed->then(null, function ($error) use ($exeContext) { return $completed->then(null, function ($error) use ($exeContext) {
$exeContext->addError($error); $exeContext->addError($error);
return self::$promiseAdapter->createResolvedPromise(null); return $this->promises->createResolvedPromise(null);
}); });
} }
return $completed; return $completed;
@ -709,7 +722,6 @@ class Executor
* This is a small wrapper around completeValue which annotates errors with * This is a small wrapper around completeValue which annotates errors with
* location information. * location information.
* *
* @param ExecutionContext $exeContext
* @param Type $returnType * @param Type $returnType
* @param $fieldNodes * @param $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -718,8 +730,7 @@ class Executor
* @return array|null|Promise * @return array|null|Promise
* @throws Error * @throws Error
*/ */
public static function completeValueWithLocatedError( public function completeValueWithLocatedError(
ExecutionContext $exeContext,
Type $returnType, Type $returnType,
$fieldNodes, $fieldNodes,
ResolveInfo $info, ResolveInfo $info,
@ -728,17 +739,16 @@ class Executor
) )
{ {
try { try {
$completed = self::completeValue( $completed = $this->completeValue(
$exeContext,
$returnType, $returnType,
$fieldNodes, $fieldNodes,
$info, $info,
$path, $path,
$result $result
); );
if (self::$promiseAdapter->isPromise($completed)) { if ($this->promises->isPromise($completed)) {
return $completed->then(null, function ($error) use ($fieldNodes, $path) { return $completed->then(null, function ($error) use ($fieldNodes, $path) {
return self::$promiseAdapter->createRejectedPromise(Error::createLocatedError($error, $fieldNodes, $path)); return $this->promises->createRejectedPromise(Error::createLocatedError($error, $fieldNodes, $path));
}); });
} }
return $completed; return $completed;
@ -768,7 +778,6 @@ class Executor
* Otherwise, the field type expects a sub-selection set, and will complete the * Otherwise, the field type expects a sub-selection set, and will complete the
* value by evaluating all sub-selections. * value by evaluating all sub-selections.
* *
* @param ExecutionContext $exeContext
* @param Type $returnType * @param Type $returnType
* @param FieldNode[] $fieldNodes * @param FieldNode[] $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -778,8 +787,7 @@ class Executor
* @throws Error * @throws Error
* @throws \Exception * @throws \Exception
*/ */
private static function completeValue( private function completeValue(
ExecutionContext $exeContext,
Type $returnType, Type $returnType,
$fieldNodes, $fieldNodes,
ResolveInfo $info, ResolveInfo $info,
@ -787,10 +795,12 @@ class Executor
&$result &$result
) )
{ {
$exeContext = $this->exeContext;
// If result is a Promise, apply-lift over completeValue. // If result is a Promise, apply-lift over completeValue.
if (self::$promiseAdapter->isPromise($result)) { if ($this->promises->isPromise($result)) {
return $result->then(function (&$resolved) use ($exeContext, $returnType, $fieldNodes, $info, $path) { return $result->then(function (&$resolved) use ($returnType, $fieldNodes, $info, $path) {
return self::completeValue($exeContext, $returnType, $fieldNodes, $info, $path, $resolved); return $this->completeValue($returnType, $fieldNodes, $info, $path, $resolved);
}); });
} }
@ -801,8 +811,7 @@ class Executor
// If field type is NonNull, complete for inner type, and throw field error // If field type is NonNull, complete for inner type, and throw field error
// if result is null. // if result is null.
if ($returnType instanceof NonNull) { if ($returnType instanceof NonNull) {
$completed = self::completeValue( $completed = $this->completeValue(
$exeContext,
$returnType->getWrappedType(), $returnType->getWrappedType(),
$fieldNodes, $fieldNodes,
$info, $info,
@ -824,22 +833,22 @@ class Executor
// If field type is List, complete each item in the list with the inner type // If field type is List, complete each item in the list with the inner type
if ($returnType instanceof ListOfType) { if ($returnType instanceof ListOfType) {
return self::completeListValue($exeContext, $returnType, $fieldNodes, $info, $path, $result); return $this->completeListValue($returnType, $fieldNodes, $info, $path, $result);
} }
// If field type is Scalar or Enum, serialize to a valid value, returning // If field type is Scalar or Enum, serialize to a valid value, returning
// null if serialization is not possible. // null if serialization is not possible.
if ($returnType instanceof LeafType) { if ($returnType instanceof LeafType) {
return self::completeLeafValue($returnType, $result); return $this->completeLeafValue($returnType, $result);
} }
if ($returnType instanceof AbstractType) { if ($returnType instanceof AbstractType) {
return self::completeAbstractValue($exeContext, $returnType, $fieldNodes, $info, $path, $result); return $this->completeAbstractValue($returnType, $fieldNodes, $info, $path, $result);
} }
// Field type must be Object, Interface or Union and expect sub-selections. // Field type must be Object, Interface or Union and expect sub-selections.
if ($returnType instanceof ObjectType) { if ($returnType instanceof ObjectType) {
return self::completeObjectValue($exeContext, $returnType, $fieldNodes, $info, $path, $result); return $this->completeObjectValue($returnType, $fieldNodes, $info, $path, $result);
} }
throw new \RuntimeException("Cannot complete value of unexpected type \"{$returnType}\"."); throw new \RuntimeException("Cannot complete value of unexpected type \"{$returnType}\".");
@ -891,7 +900,7 @@ class Executor
* *
* @return FieldDefinition * @return FieldDefinition
*/ */
private static function getFieldDef(Schema $schema, ObjectType $parentType, $fieldName) private function getFieldDef(Schema $schema, ObjectType $parentType, $fieldName)
{ {
static $schemaMetaFieldDef, $typeMetaFieldDef, $typeNameMetaFieldDef; static $schemaMetaFieldDef, $typeMetaFieldDef, $typeNameMetaFieldDef;
@ -915,7 +924,6 @@ class Executor
* Complete a value of an abstract type by determining the runtime object type * Complete a value of an abstract type by determining the runtime object type
* of that value, then complete the value for that type. * of that value, then complete the value for that type.
* *
* @param ExecutionContext $exeContext
* @param AbstractType $returnType * @param AbstractType $returnType
* @param $fieldNodes * @param $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -924,8 +932,9 @@ class Executor
* @return mixed * @return mixed
* @throws Error * @throws Error
*/ */
private static function completeAbstractValue(ExecutionContext $exeContext, AbstractType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result) private function completeAbstractValue(AbstractType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result)
{ {
$exeContext = $this->exeContext;
$runtimeType = $returnType->resolveType($result, $exeContext->contextValue, $info); $runtimeType = $returnType->resolveType($result, $exeContext->contextValue, $info);
if (null === $runtimeType) { if (null === $runtimeType) {
@ -952,14 +961,13 @@ class Executor
$fieldNodes $fieldNodes
); );
} }
return self::completeObjectValue($exeContext, $runtimeType, $fieldNodes, $info, $path, $result); return $this->completeObjectValue($runtimeType, $fieldNodes, $info, $path, $result);
} }
/** /**
* Complete a list value by completing each item in the list with the * Complete a list value by completing each item in the list with the
* inner type * inner type
* *
* @param ExecutionContext $exeContext
* @param ListOfType $returnType * @param ListOfType $returnType
* @param $fieldNodes * @param $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -968,7 +976,7 @@ class Executor
* @return array|Promise * @return array|Promise
* @throws \Exception * @throws \Exception
*/ */
private static function completeListValue(ExecutionContext $exeContext, ListOfType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result) private function completeListValue(ListOfType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result)
{ {
$itemType = $returnType->getWrappedType(); $itemType = $returnType->getWrappedType();
Utils::invariant( Utils::invariant(
@ -982,13 +990,13 @@ class Executor
foreach ($result as $item) { foreach ($result as $item) {
$fieldPath = $path; $fieldPath = $path;
$fieldPath[] = $i++; $fieldPath[] = $i++;
$completedItem = self::completeValueCatchingError($exeContext, $itemType, $fieldNodes, $info, $fieldPath, $item); $completedItem = $this->completeValueCatchingError($itemType, $fieldNodes, $info, $fieldPath, $item);
if (!$containsPromise && self::$promiseAdapter->isPromise($completedItem)) { if (!$containsPromise && $this->promises->isPromise($completedItem)) {
$containsPromise = true; $containsPromise = true;
} }
$completedItems[] = $completedItem; $completedItems[] = $completedItem;
} }
return $containsPromise ? self::$promiseAdapter->createPromiseAll($completedItems) : $completedItems; return $containsPromise ? $this->promises->createPromiseAll($completedItems) : $completedItems;
} }
/** /**
@ -1000,7 +1008,7 @@ class Executor
* @return mixed * @return mixed
* @throws \Exception * @throws \Exception
*/ */
private static function completeLeafValue(LeafType $returnType, &$result) private function completeLeafValue(LeafType $returnType, &$result)
{ {
$serializedResult = $returnType->serialize($result); $serializedResult = $returnType->serialize($result);
@ -1015,7 +1023,6 @@ class Executor
/** /**
* Complete an Object value by executing all sub-selections. * Complete an Object value by executing all sub-selections.
* *
* @param ExecutionContext $exeContext
* @param ObjectType $returnType * @param ObjectType $returnType
* @param $fieldNodes * @param $fieldNodes
* @param ResolveInfo $info * @param ResolveInfo $info
@ -1024,8 +1031,10 @@ class Executor
* @return array|Promise|\stdClass * @return array|Promise|\stdClass
* @throws Error * @throws Error
*/ */
private static function completeObjectValue(ExecutionContext $exeContext, ObjectType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result) private function completeObjectValue(ObjectType $returnType, $fieldNodes, ResolveInfo $info, $path, &$result)
{ {
$exeContext = $this->exeContext;
// If there is an isTypeOf predicate function, call it with the // If there is an isTypeOf predicate function, call it with the
// current result. If isTypeOf returns false, then raise an error rather // current result. If isTypeOf returns false, then raise an error rather
// than continuing execution. // than continuing execution.
@ -1042,8 +1051,7 @@ class Executor
foreach ($fieldNodes as $fieldNode) { foreach ($fieldNodes as $fieldNode) {
if (isset($fieldNode->selectionSet)) { if (isset($fieldNode->selectionSet)) {
$subFieldNodes = self::collectFields( $subFieldNodes = $this->collectFields(
$exeContext,
$returnType, $returnType,
$fieldNode->selectionSet, $fieldNode->selectionSet,
$subFieldNodes, $subFieldNodes,
@ -1052,7 +1060,7 @@ class Executor
} }
} }
return self::executeFields($exeContext, $returnType, $result, $path, $subFieldNodes); return $this->executeFields($returnType, $result, $path, $subFieldNodes);
} }
/** /**