Struct PythonBackend 

pub struct PythonBackend;

Python language backend.

Trait Implementations

impl LanguageBackend for PythonBackend

fn scalar_to_type(&self, scalar: &ScalarType) -> &'static str

Maps a Nautilus scalar type to the target language’s type name.

fn array_type(&self, inner: &str) -> String

Wraps a type name in the language’s array/list syntax.

fn not_in_suffix(&self) -> &'static str

Suffix for the “not in collection” operator.

fn startswith_suffix(&self) -> &'static str

Suffix for the “starts with” string operator.

fn endswith_suffix(&self) -> &'static str

Suffix for the “ends with” string operator.

fn null_suffix(&self) -> &'static str

Suffix for the null-check operator.

fn null_literal(&self) -> &'static str

The null literal in this language (Python: "None", TS: "null").

fn true_literal(&self) -> &'static str

The boolean true literal (Python: "True", TS: "true").

fn false_literal(&self) -> &'static str

The boolean false literal (Python: "False", TS: "false").

fn string_literal(&self, s: &str) -> String

Format a string literal (Python: "\"hello\"", TS: "'hello'").

fn empty_array_literal(&self) -> &'static str

The empty-array factory expression (Python: "Field(default_factory=list)", TS: "[]").

fn is_auto_generated(&self, field: &FieldIr) -> bool

Returns true for fields whose values are supplied automatically by the database: autoincrement(), uuid(), or now().

fn numeric_operators(&self, type_name: &str) -> Vec<FilterOperator>

Returns the standard comparison operators (lt, lte, gt, gte, in, not_in/notIn) for a numeric-like type.

fn get_filter_operators_for_scalar( &self, scalar: &ScalarType, ) -> Vec<FilterOperator>

Returns the filter operators available for a given scalar type.

fn get_filter_operators_for_field( &self, field: &FieldIr, enums: &HashMap<String, EnumIr>, ) -> Vec<FilterOperator>

Returns filter operators for a field, considering its resolved type (scalar, enum, or relation).

fn enum_variant_literal(&self, variant: &str) -> String

Format an enum variant as a default value (Python: unquoted, TS: single-quoted).

fn relation_type(&self, target_model: &str) -> String

Resolves the base type name for a relation field.

fn get_base_type( &self, field: &FieldIr, enums: &HashMap<String, EnumIr>, ) -> String

Returns the bare base type for a field without array or optional wrappers.

fn get_default_value(&self, field: &FieldIr) -> Option<String>

Returns the default value expression for a field, or None if no default.