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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true,
});
exports.astFromValue = astFromValue;
var _inspect = require('../jsutils/inspect.js');
var _invariant = require('../jsutils/invariant.js');
var _isIterableObject = require('../jsutils/isIterableObject.js');
var _isObjectLike = require('../jsutils/isObjectLike.js');
var _kinds = require('../language/kinds.js');
var _definition = require('../type/definition.js');
var _scalars = require('../type/scalars.js');
/**
* Produces a GraphQL Value AST given a JavaScript object.
* Function will match JavaScript/JSON values to GraphQL AST schema format
* by using suggested GraphQLInputType. For example:
*
* astFromValue("value", GraphQLString)
*
* A GraphQL type must be provided, which will be used to interpret different
* JavaScript values.
*
* | JSON Value | GraphQL Value |
* | ------------- | -------------------- |
* | Object | Input Object |
* | Array | List |
* | Boolean | Boolean |
* | String | String / Enum Value |
* | Number | Int / Float |
* | Unknown | Enum Value |
* | null | NullValue |
*
*/
function astFromValue(value, type) {
if ((0, _definition.isNonNullType)(type)) {
const astValue = astFromValue(value, type.ofType);
if (
(astValue === null || astValue === void 0 ? void 0 : astValue.kind) ===
_kinds.Kind.NULL
) {
return null;
}
return astValue;
} // only explicit null, not undefined, NaN
if (value === null) {
return {
kind: _kinds.Kind.NULL,
};
} // undefined
if (value === undefined) {
return null;
} // Convert JavaScript array to GraphQL list. If the GraphQLType is a list, but
// the value is not an array, convert the value using the list's item type.
if ((0, _definition.isListType)(type)) {
const itemType = type.ofType;
if ((0, _isIterableObject.isIterableObject)(value)) {
const valuesNodes = [];
for (const item of value) {
const itemNode = astFromValue(item, itemType);
if (itemNode != null) {
valuesNodes.push(itemNode);
}
}
return {
kind: _kinds.Kind.LIST,
values: valuesNodes,
};
}
return astFromValue(value, itemType);
} // Populate the fields of the input object by creating ASTs from each value
// in the JavaScript object according to the fields in the input type.
if ((0, _definition.isInputObjectType)(type)) {
if (!(0, _isObjectLike.isObjectLike)(value)) {
return null;
}
const fieldNodes = [];
for (const field of Object.values(type.getFields())) {
const fieldValue = astFromValue(value[field.name], field.type);
if (fieldValue) {
fieldNodes.push({
kind: _kinds.Kind.OBJECT_FIELD,
name: {
kind: _kinds.Kind.NAME,
value: field.name,
},
value: fieldValue,
});
}
}
return {
kind: _kinds.Kind.OBJECT,
fields: fieldNodes,
};
}
if ((0, _definition.isLeafType)(type)) {
// Since value is an internally represented value, it must be serialized
// to an externally represented value before converting into an AST.
const serialized = type.serialize(value);
if (serialized == null) {
return null;
} // Others serialize based on their corresponding JavaScript scalar types.
if (typeof serialized === 'boolean') {
return {
kind: _kinds.Kind.BOOLEAN,
value: serialized,
};
} // JavaScript numbers can be Int or Float values.
if (typeof serialized === 'number' && Number.isFinite(serialized)) {
const stringNum = String(serialized);
return integerStringRegExp.test(stringNum)
? {
kind: _kinds.Kind.INT,
value: stringNum,
}
: {
kind: _kinds.Kind.FLOAT,
value: stringNum,
};
}
if (typeof serialized === 'string') {
// Enum types use Enum literals.
if ((0, _definition.isEnumType)(type)) {
return {
kind: _kinds.Kind.ENUM,
value: serialized,
};
} // ID types can use Int literals.
if (type === _scalars.GraphQLID && integerStringRegExp.test(serialized)) {
return {
kind: _kinds.Kind.INT,
value: serialized,
};
}
return {
kind: _kinds.Kind.STRING,
value: serialized,
};
}
throw new TypeError(
`Cannot convert value to AST: ${(0, _inspect.inspect)(serialized)}.`,
);
}
/* c8 ignore next 3 */
// Not reachable, all possible types have been considered.
false ||
(0, _invariant.invariant)(
false,
'Unexpected input type: ' + (0, _inspect.inspect)(type),
);
}
/**
* IntValue:
* - NegativeSign? 0
* - NegativeSign? NonZeroDigit ( Digit+ )?
*/
const integerStringRegExp = /^-?(?:0|[1-9][0-9]*)$/;