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-// @flow strict
-import find from '../polyfills/find';
-
-import type { ObjMap } from '../jsutils/ObjMap';
-import keyMap from '../jsutils/keyMap';
-import inspect from '../jsutils/inspect';
-import printPathArray from '../jsutils/printPathArray';
-
-import { GraphQLError } from '../error/GraphQLError';
-
-import type {
- FieldNode,
- DirectiveNode,
- VariableDefinitionNode,
-} from '../language/ast';
-import { Kind } from '../language/kinds';
-import { print } from '../language/printer';
-
-import type { GraphQLSchema } from '../type/schema';
-import type { GraphQLField } from '../type/definition';
-import type { GraphQLDirective } from '../type/directives';
-import { isInputType, isNonNullType } from '../type/definition';
-
-import { typeFromAST } from '../utilities/typeFromAST';
-import { valueFromAST } from '../utilities/valueFromAST';
-import { coerceInputValue } from '../utilities/coerceInputValue';
-
-type CoercedVariableValues =
- | {| errors: $ReadOnlyArray<GraphQLError> |}
- | {| coerced: { [variable: string]: mixed, ... } |};
-
-/**
- * Prepares an object map of variableValues of the correct type based on the
- * provided variable definitions and arbitrary input. If the input cannot be
- * parsed to match the variable definitions, a GraphQLError will be thrown.
- *
- * Note: The returned value is a plain Object with a prototype, since it is
- * exposed to user code. Care should be taken to not pull values from the
- * Object prototype.
- *
- * @internal
- */
-export function getVariableValues(
- schema: GraphQLSchema,
- varDefNodes: $ReadOnlyArray<VariableDefinitionNode>,
- inputs: { +[variable: string]: mixed, ... },
- options?: {| maxErrors?: number |},
-): CoercedVariableValues {
- const errors = [];
- const maxErrors = options?.maxErrors;
- try {
- const coerced = coerceVariableValues(
- schema,
- varDefNodes,
- inputs,
- (error) => {
- if (maxErrors != null && errors.length >= maxErrors) {
- throw new GraphQLError(
- 'Too many errors processing variables, error limit reached. Execution aborted.',
- );
- }
- errors.push(error);
- },
- );
-
- if (errors.length === 0) {
- return { coerced };
- }
- } catch (error) {
- errors.push(error);
- }
-
- return { errors };
-}
-
-function coerceVariableValues(
- schema: GraphQLSchema,
- varDefNodes: $ReadOnlyArray<VariableDefinitionNode>,
- inputs: { +[variable: string]: mixed, ... },
- onError: (GraphQLError) => void,
-): { [variable: string]: mixed, ... } {
- const coercedValues = {};
- for (const varDefNode of varDefNodes) {
- const varName = varDefNode.variable.name.value;
- const varType = typeFromAST(schema, varDefNode.type);
- if (!isInputType(varType)) {
- // Must use input types for variables. This should be caught during
- // validation, however is checked again here for safety.
- const varTypeStr = print(varDefNode.type);
- onError(
- new GraphQLError(
- `Variable "$${varName}" expected value of type "${varTypeStr}" which cannot be used as an input type.`,
- varDefNode.type,
- ),
- );
- continue;
- }
-
- if (!hasOwnProperty(inputs, varName)) {
- if (varDefNode.defaultValue) {
- coercedValues[varName] = valueFromAST(varDefNode.defaultValue, varType);
- } else if (isNonNullType(varType)) {
- const varTypeStr = inspect(varType);
- onError(
- new GraphQLError(
- `Variable "$${varName}" of required type "${varTypeStr}" was not provided.`,
- varDefNode,
- ),
- );
- }
- continue;
- }
-
- const value = inputs[varName];
- if (value === null && isNonNullType(varType)) {
- const varTypeStr = inspect(varType);
- onError(
- new GraphQLError(
- `Variable "$${varName}" of non-null type "${varTypeStr}" must not be null.`,
- varDefNode,
- ),
- );
- continue;
- }
-
- coercedValues[varName] = coerceInputValue(
- value,
- varType,
- (path, invalidValue, error) => {
- let prefix =
- `Variable "$${varName}" got invalid value ` + inspect(invalidValue);
- if (path.length > 0) {
- prefix += ` at "${varName}${printPathArray(path)}"`;
- }
- onError(
- new GraphQLError(
- prefix + '; ' + error.message,
- varDefNode,
- undefined,
- undefined,
- undefined,
- error.originalError,
- ),
- );
- },
- );
- }
-
- return coercedValues;
-}
-
-/**
- * Prepares an object map of argument values given a list of argument
- * definitions and list of argument AST nodes.
- *
- * Note: The returned value is a plain Object with a prototype, since it is
- * exposed to user code. Care should be taken to not pull values from the
- * Object prototype.
- *
- * @internal
- */
-export function getArgumentValues(
- def: GraphQLField<mixed, mixed> | GraphQLDirective,
- node: FieldNode | DirectiveNode,
- variableValues?: ?ObjMap<mixed>,
-): { [argument: string]: mixed, ... } {
- const coercedValues = {};
-
- // istanbul ignore next (See: 'https://github.com/graphql/graphql-js/issues/2203')
- const argumentNodes = node.arguments ?? [];
- const argNodeMap = keyMap(argumentNodes, (arg) => arg.name.value);
-
- for (const argDef of def.args) {
- const name = argDef.name;
- const argType = argDef.type;
- const argumentNode = argNodeMap[name];
-
- if (!argumentNode) {
- if (argDef.defaultValue !== undefined) {
- coercedValues[name] = argDef.defaultValue;
- } else if (isNonNullType(argType)) {
- throw new GraphQLError(
- `Argument "${name}" of required type "${inspect(argType)}" ` +
- 'was not provided.',
- node,
- );
- }
- continue;
- }
-
- const valueNode = argumentNode.value;
- let isNull = valueNode.kind === Kind.NULL;
-
- if (valueNode.kind === Kind.VARIABLE) {
- const variableName = valueNode.name.value;
- if (
- variableValues == null ||
- !hasOwnProperty(variableValues, variableName)
- ) {
- if (argDef.defaultValue !== undefined) {
- coercedValues[name] = argDef.defaultValue;
- } else if (isNonNullType(argType)) {
- throw new GraphQLError(
- `Argument "${name}" of required type "${inspect(argType)}" ` +
- `was provided the variable "$${variableName}" which was not provided a runtime value.`,
- valueNode,
- );
- }
- continue;
- }
- isNull = variableValues[variableName] == null;
- }
-
- if (isNull && isNonNullType(argType)) {
- throw new GraphQLError(
- `Argument "${name}" of non-null type "${inspect(argType)}" ` +
- 'must not be null.',
- valueNode,
- );
- }
-
- const coercedValue = valueFromAST(valueNode, argType, variableValues);
- if (coercedValue === undefined) {
- // Note: ValuesOfCorrectTypeRule validation should catch this before
- // execution. This is a runtime check to ensure execution does not
- // continue with an invalid argument value.
- throw new GraphQLError(
- `Argument "${name}" has invalid value ${print(valueNode)}.`,
- valueNode,
- );
- }
- coercedValues[name] = coercedValue;
- }
- return coercedValues;
-}
-
-/**
- * Prepares an object map of argument values given a directive definition
- * and a AST node which may contain directives. Optionally also accepts a map
- * of variable values.
- *
- * If the directive does not exist on the node, returns undefined.
- *
- * Note: The returned value is a plain Object with a prototype, since it is
- * exposed to user code. Care should be taken to not pull values from the
- * Object prototype.
- */
-export function getDirectiveValues(
- directiveDef: GraphQLDirective,
- node: { +directives?: $ReadOnlyArray<DirectiveNode>, ... },
- variableValues?: ?ObjMap<mixed>,
-): void | { [argument: string]: mixed, ... } {
- const directiveNode =
- node.directives &&
- find(
- node.directives,
- (directive) => directive.name.value === directiveDef.name,
- );
-
- if (directiveNode) {
- return getArgumentValues(directiveDef, directiveNode, variableValues);
- }
-}
-
-function hasOwnProperty(obj: mixed, prop: string): boolean {
- return Object.prototype.hasOwnProperty.call(obj, prop);
-}