feat: add Python API type definitions

crates/erg_compiler/lib/pystd/collections.d/abc.d.er

@@ -10,3 +10,18 @@
 .Reversible: ClassType
 .Genertor: ClassType
 .Sequence: ClassType
+.MutableSqunce: ClassType
+.ByteString: ClassType
+.Set: ClassType
+.MutableSet: ClassType
+.Mapping: ClassType
+.MutableMapping: ClassType
+.MappingView: ClassType
+.ItemsView: ClassType
+.KeysView: ClassType
+.ValuesView: ClassType
+.Awaitable: ClassType
+.Coroutine: ClassType
+.AsyncIterable: ClassType
+.AsyncIterator: ClassType
+.AsyncGenerator: ClassType

crates/erg_compiler/lib/pystd/compileall.d.er

@@ -0,0 +1,32 @@
+re = pyimport "re"
+
+.compile_dir!: (
+    ddir := PathLike,
+    maxlevels := Nat,
+    ddir := PathLike,
+    force := Bool,
+    rx := re.Pattern or NoneType,
+    quiet := Int,
+    legacy := Bool,
+    optimize := Int,
+    workers := Nat,
+) => Bool
+
+.compile_file!: (
+    fullname: PathLike,
+    ddir := PathLike,
+    force := Bool,
+    rx := re.Pattern or NoneType,
+    quiet := Int,
+    legacy := Bool,
+    optimize := Int,
+) => Bool
+
+.compile_path!: (
+    skip_curdir := Bool,
+    maxlevels := Nat,
+    force := Bool,
+    quiet := Int,
+    legacy := Bool,
+    optimize := Int,
+) => Bool

crates/erg_compiler/lib/pystd/py_compile.d.er

@@ -0,0 +1,10 @@
+.PyCompileError: ClassType
+
+.compile!: (
+    file: PathLike,
+    cfile := PathLike,
+    dfile := PathLike,
+    doraise := Bool,
+    optimize := Int,
+    quiet := Int,
+) => Str

crates/erg_compiler/lib/pystd/socket.d.er

@@ -124,7 +124,12 @@
         address: (Str, Int) or NoneType := NoneType
     ) => Int
 
-.socketpair!: (family := Int, type := Int, proto := Int, fileno: Int or NoneType := NoneType) => (.Socket!, .Socket!)
+.socketpair!: (
+    family := Int,
+    type := Int,
+    proto := Int,
+    fileno: Int or NoneType := NoneType
+) => (.Socket!, .Socket!)
 .create_connection!: (
     address: (Str, Int),
     timeout: Int or NoneType := NoneType,

crates/erg_compiler/lib/pystd/struct.d.er

@@ -0,0 +1,11 @@
+.Struct: ClassType
+.Struct.
+    __call__: (format: Str) -> .Struct
+    format: Str
+    size: Nat
+    pack: (self: .Struct, *values: Obj) -> Bytes
+    unpack: (self: .Struct, bytes: Bytes) -> Obj
+
+.pack: (format: Str, *values: Obj) -> Bytes
+.unpack: (format: Str, bytes: Bytes) -> Obj
+.calcsize: (format: Str) -> Nat

crates/erg_compiler/lib/pystd/urllib.d/__init__.d.er

@@ -1,2 +1,4 @@
 .parse = pyimport "parse"
 .request = pyimport "request"
+.response = pyimport "response"
+.error = pyimport "error"

crates/erg_compiler/lib/pystd/urllib.d/error.d.er

@@ -0,0 +1,4 @@
+.URLError: ClassType
+.HTTPError: ClassType
+.HTTPError <: .URLError
+.ContentTooShortError: ClassType

crates/erg_compiler/lib/pystd/urllib.d/response.d.er

@@ -0,0 +1,6 @@
+.tempfile = pyimport "tempfile"
+
+.AddBase = 'addbase': ClassType
+.AddCloseHook = 'addclosehook': ClassType
+.AddInfo = 'addinfo': ClassType
+.AddInfoUrl = 'addinfourl': ClassType

crates/erg_compiler/lib/pystd/urllib.d/robotparser.d.er

@@ -0,0 +1,11 @@
+.Entry: ClassType
+.Entry.
+    req_rate: { .requests = Int; .seconds = Int } or NoneType
+
+.RobotFileParser!: ClassType
+.RobotFileParser!.
+    __call__: (url := Str) -> .RobotFileParser!
+    set_url!: (self: RefMut(.RobotFileParser!), url: Str) => NoneType
+    read!: (self: RefMut(.RobotFileParser!)) => NoneType
+    parse!: (self: RefMut(.RobotFileParser!), lines: [Str; _]) => NoneType
+    request_rate: (self: Ref(.RobotFileParser!), useragent: Str) -> { .requests = Int; .seconds = Int } or NoneType

crates/erg_parser/parse.rs

@@ -1680,7 +1680,7 @@ impl Parser {
             .map_err(|_| self.stack_dec(fn_name!()))?;
         let first_elem = ArgKind::Kw(KwArg::new(keyword, t_spec, rhs));
         let tuple = self
-            .try_reduce_nonempty_tuple(first_elem, false)
+            .try_reduce_nonempty_tuple(first_elem, self.nth_is(1, Newline))
             .map_err(|_| self.stack_dec(fn_name!()))?;
         debug_exit_info!(self);
         Ok(tuple)