Function fieldToVariable

cel/options.go:847–877

(field protoreflect.FieldDescriptor, jsonFieldNames bool)

}

func fieldToVariable(field protoreflect.FieldDescriptor, jsonFieldNames bool) (*decls.VariableDecl, error) {
	name := string(field.Name())
	if jsonFieldNames {
		name = field.JSONName()
	}
	if field.IsMap() {
		mapKey := field.MapKey()
		mapValue := field.MapValue()
		keyType, err := fieldToCELType(mapKey)
		if err != nil {
			return nil, err
		}
		valueType, err := fieldToCELType(mapValue)
		if err != nil {
			return nil, err
		}
		return decls.NewVariable(name, MapType(keyType, valueType)), nil
	}
	if field.IsList() {
		elemType, err := fieldToCELType(field)
		if err != nil {
			return nil, err
		}
		return decls.NewVariable(name, ListType(elemType)), nil
	}
	celType, err := fieldToCELType(field)
	if err != nil {
		return nil, err
	}
	return decls.NewVariable(name, celType), nil
}

// DeclareContextProto returns an option to extend CEL environment with declarations from the given context proto.
// Each field of the proto defines a variable of the same name in the environment.