Default context is not unfiltered as indicated in the spec

Per the Author's guide:

When no context is specified in the library, and the model has not declared a default context, the default context is Unfiltered.

However cql-to-elm appears to be defaulting to Patient context for all statements without defining a contexts element in the ELM.

Consider this CQL:

library CqlArithmeticFunctionsTest

define "AbsNull Input":
    Abs(null as Integer)
define "AbsNull Output":
    null

We are neither using any model other than System nor are we declaring contexts. Nevertheless, the translator produces this ELM:


{
  "library": {
    "type": "Library",
    "identifier": {
      "type": "VersionedIdentifier",
      "id": "CqlArithmeticFunctionsTest"
    },
    "schemaIdentifier": {
      "type": "VersionedIdentifier",
      "id": "urn:hl7-org:elm",
      "version": "r1"
    },
    "usings": {
      "type": "Library$Usings",
      "def": [
        {
          "type": "UsingDef",
          "localIdentifier": "System",
          "uri": "urn:hl7-org:elm-types:r1"
        }
      ]
    },
    "statements": {
      "type": "Library$Statements",
      "def": [
        {
          "type": "ExpressionDef",
          "expression": {
            "type": "Abs",
            "operand": {
              "type": "As",
              "asTypeSpecifier": {
                "type": "NamedTypeSpecifier",
                "locator": "5:14-5:20",
                "resultTypeName": "{urn:hl7-org:elm-types:r1}Integer",
                "name": "{urn:hl7-org:elm-types:r1}Integer"
              },
              "operand": {
                "type": "Null",
                "locator": "5:6-5:9",
                "resultTypeName": "{urn:hl7-org:elm-types:r1}Any"
              },
              "locator": "5:6-5:20",
              "resultTypeName": "{urn:hl7-org:elm-types:r1}Integer",
              "strict": false
            },
            "locator": "5:2-5:21",
            "resultTypeName": "{urn:hl7-org:elm-types:r1}Integer"
          },
          "locator": "4:1-5:21",
          "resultTypeName": "{urn:hl7-org:elm-types:r1}Integer",
          "name": "AbsNull Input",
          "context": "Patient",
          "accessLevel": "Public"
        },
        {
          "type": "ExpressionDef",
          "expression": {
            "type": "Null",
            "locator": "7:2-7:5",
            "resultTypeName": "{urn:hl7-org:elm-types:r1}Any"
          },
          "locator": "6:1-7:5",
          "resultTypeName": "{urn:hl7-org:elm-types:r1}Any",
          "name": "AbsNull Output",
          "context": "Patient",
          "accessLevel": "Public"
        }
      ]
    },
    "annotation": [
      {
        "type": "CqlToElmInfo",
        "translatorOptions": "EnableLocators,EnableResultTypes,EnableDetailedErrors"
      }
    ]
  }
}

cqframework / clinical_quality_language

Default context is not unfiltered as indicated in the spec #1293