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source.lua
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75 lines (64 loc) · 2.23 KB
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--[[
* Copyright (c) GraphQL Contributors
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
]]
-- ROBLOX upstream: https://github.com/graphql/graphql-js/blob/00d4efea7f5b44088356798afff0317880605f4d/src/language/source.js
local inspect = require("../jsutils/inspect").inspect
local devAssert = require("../jsutils/devAssert").devAssert
local instanceOf = require("../jsutils/instanceOf")
type Location = {
line: number,
column: number,
}
--[[*
-- * A representation of source input to GraphQL. The `name` and `locationOffset` parameters are
-- * optional, but they are useful for clients who store GraphQL documents in source files.
-- * For example, if the GraphQL input starts at line 40 in a file named `Foo.graphql`, it might
-- * be useful for `name` to be `"Foo.graphql"` and location to be `{ line: 40, column: 1 }`.
-- * The `line` and `column` properties in `locationOffset` are 1-indexed.
-- *]]
export type Source = {
body: string,
name: string,
locationOffset: Location,
new: (body: string, _name: string?, _locationOffset: Location?) -> Source,
__tostring: (Source) -> string,
}
local Source: Source = {} :: Source;
(Source :: any).__index = Source
function Source.new(body: string, _name: string?, _locationOffset: Location?): Source
local name = _name or "GraphQL request"
local locationOffset = _locationOffset or { line = 1, column = 1 }
devAssert(typeof(body) == "string", "Body must be a string. Received: " .. inspect(body) .. ".")
local self = {}
self.body = body
self.name = name
self.locationOffset = locationOffset
devAssert(
self.locationOffset.line > 0,
"line in locationOffset is 1-indexed and must be positive."
)
devAssert(
self.locationOffset.column > 0,
"column in locationOffset is 1-indexed and must be positive."
)
return (setmetatable(self, Source) :: any) :: Source
end
function Source:__tostring(): string
-- ROBLOX: deviation for idiomatic lua representation of "object"
return "{table Source}"
end
--[[*
-- * Test if the given value is a Source object.
-- *
-- * @internal
-- *]]
function isSource(source: any): boolean
return instanceOf(source, Source)
end
return {
Source = Source,
isSource = isSource,
}