Add Typeshare support for Python

README.md

@@ -18,7 +18,7 @@ _And in the darkness, compile them_ 💍
 
 
 Do you like manually managing types that need to be passed through an FFI layer, so that your code doesn't archaically break at runtime? Be honest, nobody does. Typeshare is here to take that burden away from you! Leveraging the power of the `serde` library, Typeshare is a tool that converts your
-Rust types into their equivalent forms in Swift, Go**, Kotlin, Scala and Typescript, keeping
+Rust types into their equivalent forms in Swift, Go**, Python**, Kotlin, Scala and Typescript, keeping
 your cross-language codebase in sync. With automatic implementation for serialization and deserialization on both sides of the FFI, Typeshare does all the heavy lifting for you. It can even handle generics and convert effortlessly between standard libraries in different languages!
 
 **A few caveats. See [here](#a-quick-refresher-on-supported-languages) for more details.
@@ -98,12 +98,13 @@ Are you getting weird deserialization issues? Did our procedural macro throw a c
 - Swift
 - Typescript
 - Go**
+- Python**
 
 If there is a language that you want Typeshare to generate definitions for, you can either:
 1. Open an issue in this repository requesting your language of choice.
 2. Implement support for that language and open a PR with your implementation. We would be eternally grateful! 🙏
 
-** Right now, Go support is experimental. Enable the `go` feature when installing typeshare-cli if you want to use it.
+** Right now, Go and Python support is experimental. Enable the `go` or `python` features, respectively, when installing typeshare-cli if you want to use these.
 
 ## Credits
 

cli/Cargo.toml

@@ -13,6 +13,7 @@ path = "src/main.rs"
 
 [features]
 go = []
+python = []
 
 [dependencies]
 clap = { version = "4.5", features = [

cli/data/tests/mappings_config.toml

@@ -11,4 +11,8 @@
 "DateTime" = "String"
 
 [go.type_mappings]
-"DateTime" = "string"
+"DateTime" = "string"
+
+[python.type_mappings]
+"DateTime" = "datetime"
+"Url" = "AnyUrl"

cli/src/args.rs

@@ -10,6 +10,8 @@ pub enum AvailableLanguage {
     Typescript,
     #[cfg(feature = "go")]
     Go,
+    #[cfg(feature = "python")]
+    Python,
 }
 
 #[derive(clap::Parser)]

cli/src/config.rs

@@ -11,6 +11,13 @@ use std::{
 
 const DEFAULT_CONFIG_FILE_NAME: &str = "typeshare.toml";
 
+#[derive(Default, Serialize, Deserialize, PartialEq, Eq, Debug)]
+#[serde(default)]
+#[cfg(feature = "python")]
+pub struct PythonParams {
+    pub type_mappings: HashMap<String, String>,
+}
+
 #[derive(Default, Serialize, Deserialize, Debug, PartialEq, Eq)]
 #[serde(default)]
 pub struct KotlinParams {
@@ -64,6 +71,8 @@ pub(crate) struct Config {
     pub typescript: TypeScriptParams,
     pub kotlin: KotlinParams,
     pub scala: ScalaParams,
+    #[cfg(feature = "python")]
+    pub python: PythonParams,
     #[cfg(feature = "go")]
     pub go: GoParams,
     #[serde(skip)]
@@ -160,6 +169,11 @@ mod test {
         assert_eq!(config.kotlin.type_mappings["DateTime"], "String");
         assert_eq!(config.scala.type_mappings["DateTime"], "String");
         assert_eq!(config.typescript.type_mappings["DateTime"], "string");
+        #[cfg(feature = "python")]
+        {
+            assert_eq!(config.python.type_mappings["Url"], "AnyUrl");
+            assert_eq!(config.python.type_mappings["DateTime"], "datetime");
+        }
         #[cfg(feature = "go")]
         assert_eq!(config.go.type_mappings["DateTime"], "string");
     }

cli/src/main.rs

@@ -19,13 +19,13 @@ use clap_complete::Generator;
 use ignore::{overrides::OverrideBuilder, types::TypesBuilder, WalkBuilder};
 use log::error;
 use rayon::iter::ParallelBridge;
+use typeshare_core::language::GenericConstraints;
 #[cfg(feature = "go")]
 use typeshare_core::language::Go;
+#[cfg(feature = "python")]
+use typeshare_core::language::Python;
 use typeshare_core::{
-    language::{
-        CrateName, GenericConstraints, Kotlin, Language, Scala, SupportedLanguage, Swift,
-        TypeScript,
-    },
+    language::{CrateName, Kotlin, Language, Scala, SupportedLanguage, Swift, TypeScript},
     parser::ParsedData,
 };
 
@@ -78,6 +78,8 @@ fn main() -> anyhow::Result<()> {
             args::AvailableLanguage::Typescript => SupportedLanguage::TypeScript,
             #[cfg(feature = "go")]
             args::AvailableLanguage::Go => SupportedLanguage::Go,
+            #[cfg(feature = "python")]
+            args::AvailableLanguage::Python => SupportedLanguage::Python,
         },
     };
 
@@ -210,6 +212,15 @@ fn language(
         SupportedLanguage::Go => {
             panic!("go support is currently experimental and must be enabled as a feature flag for typeshare-cli")
         }
+        #[cfg(feature = "python")]
+        SupportedLanguage::Python => Box::new(Python {
+            type_mappings: config.python.type_mappings,
+            ..Default::default()
+        }),
+        #[cfg(not(feature = "python"))]
+        SupportedLanguage::Python => {
+            panic!("python support is currently experimental and must be enabled as a feature flag for typeshare-cli")
+        }
     }
 }
 

cli/src/parse.rs

@@ -61,6 +61,7 @@ fn output_file_name(language_type: SupportedLanguage, crate_name: &CrateName) ->
         SupportedLanguage::Scala => snake_case(),
         SupportedLanguage::Swift => pascal_case(),
         SupportedLanguage::TypeScript => snake_case(),
+        SupportedLanguage::Python => snake_case(),
     }
 }
 

core/Cargo.toml

@@ -14,6 +14,8 @@ thiserror = "1"
 itertools = "0.12"
 lazy_format = "2"
 joinery = "2"
+topological-sort = { version = "0.2.2"}
+convert_case = { version = "0.6.0"}
 log.workspace = true
 flexi_logger.workspace = true
 

core/data/tests/anonymous_struct_with_rename/output.py

@@ -0,0 +1,54 @@
+"""
+ Generated by typeshare 1.12.0
+"""
+from __future__ import annotations
+
+from enum import Enum
+from pydantic import BaseModel, ConfigDict, Field
+from typing import List, Literal, Union
+
+
+class AnonymousStructWithRenameListInner(BaseModel):
+    """
+    Generated type representing the anonymous struct variant `List` of the `AnonymousStructWithRename` Rust enum
+    """
+    list: List[str]
+
+class AnonymousStructWithRenameLongFieldNamesInner(BaseModel):
+    """
+    Generated type representing the anonymous struct variant `LongFieldNames` of the `AnonymousStructWithRename` Rust enum
+    """
+    model_config = ConfigDict(populate_by_name=True)
+
+    some_long_field_name: str
+    and_: bool = Field(alias="and")
+    but_one_more: List[str]
+
+class AnonymousStructWithRenameKebabCaseInner(BaseModel):
+    """
+    Generated type representing the anonymous struct variant `KebabCase` of the `AnonymousStructWithRename` Rust enum
+    """
+    model_config = ConfigDict(populate_by_name=True)
+
+    another_list: List[str] = Field(alias="another-list")
+    camel_case_string_field: str = Field(alias="camelCaseStringField")
+    something_else: bool = Field(alias="something-else")
+
+class AnonymousStructWithRenameTypes(str, Enum):
+    LIST = "list"
+    LONG_FIELD_NAMES = "longFieldNames"
+    KEBAB_CASE = "kebabCase"
+
+class AnonymousStructWithRenameList(BaseModel):
+    type: Literal[AnonymousStructWithRenameTypes.LIST] = AnonymousStructWithRenameTypes.LIST
+    content: AnonymousStructWithRenameListInner
+
+class AnonymousStructWithRenameLongFieldNames(BaseModel):
+    type: Literal[AnonymousStructWithRenameTypes.LONG_FIELD_NAMES] = AnonymousStructWithRenameTypes.LONG_FIELD_NAMES
+    content: AnonymousStructWithRenameLongFieldNamesInner
+
+class AnonymousStructWithRenameKebabCase(BaseModel):
+    type: Literal[AnonymousStructWithRenameTypes.KEBAB_CASE] = AnonymousStructWithRenameTypes.KEBAB_CASE
+    content: AnonymousStructWithRenameKebabCaseInner
+
+AnonymousStructWithRename = Union[AnonymousStructWithRenameList, AnonymousStructWithRenameLongFieldNames, AnonymousStructWithRenameKebabCase]

core/data/tests/can_apply_prefix_correctly/output.py

@@ -0,0 +1,46 @@
+"""
+ Generated by typeshare 1.12.0
+"""
+from __future__ import annotations
+
+from enum import Enum
+from pydantic import BaseModel
+from typing import Dict, List, Literal, Union
+
+
+class ItemDetailsFieldValue(BaseModel):
+    hello: str
+
+class AdvancedColorsTypes(str, Enum):
+    STRING = "String"
+    NUMBER = "Number"
+    NUMBER_ARRAY = "NumberArray"
+    REALLY_COOL_TYPE = "ReallyCoolType"
+    ARRAY_REALLY_COOL_TYPE = "ArrayReallyCoolType"
+    DICTIONARY_REALLY_COOL_TYPE = "DictionaryReallyCoolType"
+
+class AdvancedColorsString(BaseModel):
+    t: Literal[AdvancedColorsTypes.STRING] = AdvancedColorsTypes.STRING
+    c: str
+
+class AdvancedColorsNumber(BaseModel):
+    t: Literal[AdvancedColorsTypes.NUMBER] = AdvancedColorsTypes.NUMBER
+    c: int
+
+class AdvancedColorsNumberArray(BaseModel):
+    t: Literal[AdvancedColorsTypes.NUMBER_ARRAY] = AdvancedColorsTypes.NUMBER_ARRAY
+    c: List[int]
+
+class AdvancedColorsReallyCoolType(BaseModel):
+    t: Literal[AdvancedColorsTypes.REALLY_COOL_TYPE] = AdvancedColorsTypes.REALLY_COOL_TYPE
+    c: ItemDetailsFieldValue
+
+class AdvancedColorsArrayReallyCoolType(BaseModel):
+    t: Literal[AdvancedColorsTypes.ARRAY_REALLY_COOL_TYPE] = AdvancedColorsTypes.ARRAY_REALLY_COOL_TYPE
+    c: List[ItemDetailsFieldValue]
+
+class AdvancedColorsDictionaryReallyCoolType(BaseModel):
+    t: Literal[AdvancedColorsTypes.DICTIONARY_REALLY_COOL_TYPE] = AdvancedColorsTypes.DICTIONARY_REALLY_COOL_TYPE
+    c: Dict[str, ItemDetailsFieldValue]
+
+AdvancedColors = Union[AdvancedColorsString, AdvancedColorsNumber, AdvancedColorsNumberArray, AdvancedColorsReallyCoolType, AdvancedColorsArrayReallyCoolType, AdvancedColorsDictionaryReallyCoolType]

core/data/tests/can_generate_algebraic_enum/output.py

@@ -0,0 +1,79 @@
+"""
+ Generated by typeshare 1.12.0
+"""
+from __future__ import annotations
+
+from enum import Enum
+from pydantic import BaseModel
+from typing import List, Literal, Union
+
+
+class ItemDetailsFieldValue(BaseModel):
+    """
+    Struct comment
+    """
+    pass
+class AdvancedColorsTypes(str, Enum):
+    STRING = "String"
+    NUMBER = "Number"
+    UNSIGNED_NUMBER = "UnsignedNumber"
+    NUMBER_ARRAY = "NumberArray"
+    REALLY_COOL_TYPE = "ReallyCoolType"
+
+class AdvancedColorsString(BaseModel):
+    """
+    This is a case comment
+    """
+    type: Literal[AdvancedColorsTypes.STRING] = AdvancedColorsTypes.STRING
+    content: str
+
+class AdvancedColorsNumber(BaseModel):
+    type: Literal[AdvancedColorsTypes.NUMBER] = AdvancedColorsTypes.NUMBER
+    content: int
+
+class AdvancedColorsUnsignedNumber(BaseModel):
+    type: Literal[AdvancedColorsTypes.UNSIGNED_NUMBER] = AdvancedColorsTypes.UNSIGNED_NUMBER
+    content: int
+
+class AdvancedColorsNumberArray(BaseModel):
+    type: Literal[AdvancedColorsTypes.NUMBER_ARRAY] = AdvancedColorsTypes.NUMBER_ARRAY
+    content: List[int]
+
+class AdvancedColorsReallyCoolType(BaseModel):
+    """
+    Comment on the last element
+    """
+    type: Literal[AdvancedColorsTypes.REALLY_COOL_TYPE] = AdvancedColorsTypes.REALLY_COOL_TYPE
+    content: ItemDetailsFieldValue
+
+# Enum comment
+AdvancedColors = Union[AdvancedColorsString, AdvancedColorsNumber, AdvancedColorsUnsignedNumber, AdvancedColorsNumberArray, AdvancedColorsReallyCoolType]
+class AdvancedColors2Types(str, Enum):
+    STRING = "string"
+    NUMBER = "number"
+    NUMBER_ARRAY = "number-array"
+    REALLY_COOL_TYPE = "really-cool-type"
+
+class AdvancedColors2String(BaseModel):
+    """
+    This is a case comment
+    """
+    type: Literal[AdvancedColors2Types.STRING] = AdvancedColors2Types.STRING
+    content: str
+
+class AdvancedColors2Number(BaseModel):
+    type: Literal[AdvancedColors2Types.NUMBER] = AdvancedColors2Types.NUMBER
+    content: int
+
+class AdvancedColors2NumberArray(BaseModel):
+    type: Literal[AdvancedColors2Types.NUMBER_ARRAY] = AdvancedColors2Types.NUMBER_ARRAY
+    content: List[int]
+
+class AdvancedColors2ReallyCoolType(BaseModel):
+    """
+    Comment on the last element
+    """
+    type: Literal[AdvancedColors2Types.REALLY_COOL_TYPE] = AdvancedColors2Types.REALLY_COOL_TYPE
+    content: ItemDetailsFieldValue
+
+AdvancedColors2 = Union[AdvancedColors2String, AdvancedColors2Number, AdvancedColors2NumberArray, AdvancedColors2ReallyCoolType]

core/data/tests/can_generate_algebraic_enum_with_skipped_variants/output.py

@@ -0,0 +1,22 @@
+"""
+ Generated by typeshare 1.12.0
+"""
+from __future__ import annotations
+
+from enum import Enum
+from pydantic import BaseModel
+from typing import Literal, Union
+
+
+class SomeEnumTypes(str, Enum):
+    A = "A"
+    C = "C"
+
+class SomeEnumA(BaseModel):
+    type: Literal[SomeEnumTypes.A] = SomeEnumTypes.A
+
+class SomeEnumC(BaseModel):
+    type: Literal[SomeEnumTypes.C] = SomeEnumTypes.C
+    content: int
+
+SomeEnum = Union[SomeEnumA, SomeEnumC]