Adjust expression-related APIs

none/command.py

@@ -6,13 +6,12 @@ from typing import (
 )
 
 from . import NoneBot, permission as perm
-from .expression import render
-from .helpers import context_id, send_expr
+from .helpers import context_id, send, render_expression
 from .log import logger
 from .message import Message
 from .session import BaseSession
 from .typing import (
-    Context_T, CommandName_T, CommandArgs_T, Expression_T, Message_T
+    Context_T, CommandName_T, CommandArgs_T, Message_T
 )
 
 # Key: str (one segment of command name)
@@ -267,8 +266,7 @@ class CommandSession(BaseSession):
         return True
 
     def get(self, key: Any, *,
-            prompt: Optional[Message_T] = None,
-            prompt_expr: Optional[Expression_T] = None) -> Any:
+            prompt: Optional[Message_T] = None) -> Any:
         """
         Get an argument with a given key.
 
@@ -279,7 +277,6 @@ class CommandSession(BaseSession):
 
         :param key: argument key
         :param prompt: prompt to ask the user
-        :param prompt_expr: prompt expression to ask the user
         :return: the argument value
         """
         value = self.get_optional(key)
@@ -288,8 +285,6 @@ class CommandSession(BaseSession):
 
         self.current_key = key
         # ask the user for more information
-        if prompt_expr is not None:
-            prompt = render(prompt_expr, key=key)
         self.pause(prompt)
 
     def get_optional(self, key: Any,
@@ -436,8 +431,10 @@ async def handle_command(bot: NoneBot, ctx: Context_T) -> bool:
         if session.running:
             logger.warning(f'There is a session of command '
                            f'{session.cmd.name} running, notify the user')
-            asyncio.ensure_future(
-                send_expr(bot, ctx, bot.config.SESSION_RUNNING_EXPRESSION))
+            asyncio.ensure_future(send(
+                bot, ctx,
+                render_expression(bot.config.SESSION_RUNNING_EXPRESSION)
+            ))
             # pretend we are successful, so that NLP won't handle it
             return True
 

none/default_config.py

@@ -17,7 +17,7 @@ For example:
 from datetime import timedelta
 from typing import Container, Union, Iterable, Pattern, Optional, Dict, Any
 
-from .expression import Expression_T
+from .typing import Expression_T
 
 API_ROOT: str = ''
 ACCESS_TOKEN: str = ''

none/expression.py

@@ -1,25 +0,0 @@
-import random
-from typing import Sequence, Callable
-
-from .message import escape
-from .typing import Expression_T
-
-
-def render(expr: Expression_T, *, escape_args: bool = True, **kwargs) -> str:
-    """
-    Render an expression to message string.
-
-    :param expr: expression to render
-    :param escape_args: should escape arguments or not
-    :param kwargs: keyword arguments used in str.format()
-    :return: the rendered message
-    """
-    if isinstance(expr, Callable):
-        expr = expr(**kwargs)
-    elif isinstance(expr, Sequence) and not isinstance(expr, str):
-        expr = random.choice(expr)
-    if escape_args:
-        for k, v in kwargs.items():
-            if isinstance(v, str):
-                kwargs[k] = escape(v)
-    return expr.format(**kwargs)

none/helpers.py

@@ -1,7 +1,10 @@
 import hashlib
+import random
+from typing import Sequence, Callable
 
-from . import NoneBot, expression
+from . import NoneBot
 from .exceptions import CQHttpError
+from .message import escape
 from .typing import Context_T, Message_T, Expression_T
 
 
@@ -62,7 +65,22 @@ async def send(bot: NoneBot, ctx: Context_T, message: Message_T, *,
             raise
 
 
-async def send_expr(bot: NoneBot, ctx: Context_T,
-                    expr: Expression_T, **kwargs):
-    """Sending a expression message ignoring failure by default."""
-    return await send(bot, ctx, expression.render(expr, **kwargs))
+def render_expression(expr: Expression_T, *,
+                      escape_args: bool = True, **kwargs) -> str:
+    """
+    Render an expression to message string.
+
+    :param expr: expression to render
+    :param escape_args: should escape arguments or not
+    :param kwargs: keyword arguments used in str.format()
+    :return: the rendered message
+    """
+    if isinstance(expr, Callable):
+        expr = expr(**kwargs)
+    elif isinstance(expr, Sequence) and not isinstance(expr, str):
+        expr = random.choice(expr)
+    if escape_args:
+        for k, v in kwargs.items():
+            if isinstance(v, str):
+                kwargs[k] = escape(v)
+    return expr.format(**kwargs)

none/session.py

@@ -1,6 +1,6 @@
 from . import NoneBot
-from .helpers import send, send_expr
-from .typing import Context_T, Message_T, Expression_T
+from .helpers import send
+from .typing import Context_T, Message_T
 
 
 class BaseSession:
@@ -15,7 +15,3 @@ class BaseSession:
         """Send a message ignoring failure by default."""
         return await send(self.bot, self.ctx, message,
                           ignore_failure=ignore_failure)
-
-    async def send_expr(self, expr: Expression_T, **kwargs):
-        """Sending a expression message ignoring failure by default."""
-        return await send_expr(self.bot, self.ctx, expr, **kwargs)