format.json

{
    "$schema": "https://json-schema.org/draft/2020-12/schema",

    "description": "Picireny input format definition.",
    "type": "object",
    "properties": {
        "start": {
            "description": "Name of start rule optionally prefixed with a grammar name (specified as [grammarname:]rulename).",
            "type": "string"
        },
        "grammars": {
            "description": "Grammar descriptions mapped to (freely chosen) grammar names.",
            "type": "object",
            "patternProperties": {
                ".*": {
                    "description": "Grammar description.",
                    "type": "object",
                    "properties": {
                        "files": {
                            "description": "List of ANTLR grammar files.",
                            "type": "array",
                            "items": {
                                "description": "Grammar file (resolved relative to the location of the input format definition).",
                                "type": "string"
                            },
                            "minItems": 1
                        },
                        "islands": {
                            "description": "Regex patterns mapped to names of tokens of the described grammar.",
                            "type": "object",
                            "patternProperties": {
                                ".*": {
                                    "description": "Regex pattern matched on token instances (named capture groups define those parts of the token, which should be parsed with a rule of an island grammar, specified as [grammarname:]rulename).",
                                    "type": "string"
                                }
                            }
                        },
                        "replacements": {
                            "$ref": "replacements.json"
                        }
                    },
                    "required": [ "files" ]
                }
            }
        }
    }
}