An ANTLR v4 grammar that can be used to generate a parser for the GraphQL October 2016 spec. Supports both
the schema definition language (entrypoint schema) and the query language (entrypoint document).
Please note that this grammar has not been extensively tested. It was part of an effort to generate a GraphQL parser in Go. Due to the limitations of Go support in ANTLR, the project was abandoned before extensive validation checks could be run on the generated parser.