@polywrap/schema-bind

Bind WRAP ABIs to a variety of supported languages through codegen.

Usage

import { BindOptions, BindOutput, bindSchema } from "@polywrap/schema-bind";
import { parseSchema } from "@polywrap/schema-parse";

const schema = fetch("schema.graphql");
const abi = parseSchema(schema);

const input: BindOptions = {
  projectName: "Test",
  bindLanguage: "wasm-as",
  abi,
  schema,
  outputDirAbs: "/path/to/output/dir"
};

const output: BindOutput = bindSchema(input);

Details

Polywrap uses MessagePack as a common data interchange format between languages. This allows Polywrap WASM modules, authored in different languages, to be run within a single host language (JS, Rust, Python, Go, C#, C++).

MessagePack encoded data is sent between module boundaries. Decoding of the message will happen in the destination environment, using generated binding code, created by this package.

Supported Schema Types

GraphQL Schema Type	MessagePack Type	Description
UInt	uint 32	32-bit unsigned integer.
UInt8	uint 8	8-bit unsigned integer.
UInt16	uint 16	16-bit unsigned integer.
UInt32	uint 32	32-bit unsigned integer.
Int	int 32	32-bit signed integer.
Int8	int 8	8-bit signed integer.
Int16	int 16	16-bit signed integer.
Int32	int 32	32-bit signed integer.
String	fixstr or str 8/16/32	UTF-8 string.
Boolean	bool	true or false stored as 1 byte.
Bytes	bin 8/16/32	array of 8-bit unsigned integer.
BigInt	fixstr or str 8/16/32	UTF-8 string.
BigNumber	fixstr or str 8/16/32	UTF-8 string.
JSON	fixstr or str 8/16/32	UTF-8 string.
[Type]	fixarray or array 16/32	Array of elements.
Map	Msgpack extention type	Map of key-value pairs.
type CustomObject {   prop: Type }	fixmap or map 16/32	Structured object.