mirror of
https://github.com/shareAI-lab/learn-claude-code.git
synced 2026-08-26 16:52:26 +00:00
347 lines
13 KiB
Python
347 lines
13 KiB
Python
#!/usr/bin/env python3
|
|
"""
|
|
s05_todo_write.py - TodoWrite
|
|
|
|
The model tracks its progress through a TodoManager. After three rounds
|
|
without an update, the harness adds a reminder alongside the tool results.
|
|
|
|
+----------+ +-------+ +--------------+
|
|
| User | ---> | LLM | ---> | Tools |
|
|
| prompt | | | | + todo_write |
|
|
+----------+ +---^---+ +------+-------+
|
|
| | update
|
|
| +------v----------+
|
|
| | TodoManager |
|
|
| | [ ] pending |
|
|
| | [>] in progress |
|
|
| | [x] completed |
|
|
| +------+----------+
|
|
| tool_result |
|
|
+-----------------+
|
|
|
|
rounds_since_todo >= 3 -> add <reminder>
|
|
"""
|
|
|
|
import ast
|
|
import json
|
|
import os
|
|
import subprocess
|
|
from pathlib import Path
|
|
|
|
try:
|
|
import readline
|
|
readline.parse_and_bind('set bind-tty-special-chars off')
|
|
except ImportError:
|
|
pass
|
|
|
|
from anthropic import Anthropic
|
|
from dotenv import load_dotenv
|
|
|
|
load_dotenv(override=True)
|
|
if os.getenv("ANTHROPIC_BASE_URL"):
|
|
os.environ.pop("ANTHROPIC_AUTH_TOKEN", None)
|
|
|
|
WORKDIR = Path.cwd()
|
|
client = Anthropic(base_url=os.getenv("ANTHROPIC_BASE_URL"))
|
|
MODEL = os.environ["MODEL_ID"]
|
|
|
|
# s05 change: SYSTEM prompt adds planning guidance
|
|
SYSTEM = (
|
|
f"You are a coding agent at {WORKDIR}. "
|
|
"Before starting any multi-step task, use todo_write to plan your steps. "
|
|
"Update status as you go."
|
|
)
|
|
|
|
|
|
# -- Tool implementations from s02-s04 --
|
|
|
|
def run_bash(command: str) -> str:
|
|
try:
|
|
r = subprocess.run(command, shell=True, cwd=WORKDIR,
|
|
capture_output=True, text=True, timeout=120)
|
|
out = (r.stdout + r.stderr).strip()
|
|
return out[:50000] if out else "(no output)"
|
|
except subprocess.TimeoutExpired:
|
|
return "Error: Timeout (120s)"
|
|
|
|
def run_read(path: str, limit: int | None = None) -> str:
|
|
try:
|
|
lines = (WORKDIR / path).resolve().read_text().splitlines()
|
|
if limit and limit < len(lines):
|
|
lines = lines[:limit] + [f"... ({len(lines) - limit} more lines)"]
|
|
return "\n".join(lines)
|
|
except Exception as e:
|
|
return f"Error: {e}"
|
|
|
|
def run_write(path: str, content: str) -> str:
|
|
try:
|
|
file_path = (WORKDIR / path).resolve()
|
|
file_path.parent.mkdir(parents=True, exist_ok=True)
|
|
file_path.write_text(content)
|
|
return f"Wrote {len(content)} bytes to {path}"
|
|
except Exception as e:
|
|
return f"Error: {e}"
|
|
|
|
def run_edit(path: str, old_text: str, new_text: str) -> str:
|
|
try:
|
|
file_path = (WORKDIR / path).resolve()
|
|
text = file_path.read_text()
|
|
if old_text not in text:
|
|
return f"Error: text not found in {path}"
|
|
file_path.write_text(text.replace(old_text, new_text, 1))
|
|
return f"Edited {path}"
|
|
except Exception as e:
|
|
return f"Error: {e}"
|
|
|
|
def run_glob(pattern: str) -> str:
|
|
import glob as g
|
|
try:
|
|
results = []
|
|
for match in g.glob(pattern, root_dir=WORKDIR):
|
|
if (WORKDIR / match).resolve().is_relative_to(WORKDIR):
|
|
results.append(match)
|
|
return "\n".join(results) if results else "(no matches)"
|
|
except Exception as e:
|
|
return f"Error: {e}"
|
|
|
|
|
|
# -- New in s05: structured state the model updates --
|
|
|
|
class TodoManager:
|
|
def __init__(self):
|
|
self.items: list[dict] = []
|
|
|
|
def update(self, todos: list | str) -> str:
|
|
if isinstance(todos, str):
|
|
try:
|
|
todos = json.loads(todos)
|
|
except json.JSONDecodeError:
|
|
try:
|
|
todos = ast.literal_eval(todos)
|
|
except (SyntaxError, ValueError) as e:
|
|
raise ValueError("todos must be a list or JSON array string") from e
|
|
|
|
if not isinstance(todos, list):
|
|
raise ValueError("todos must be a list")
|
|
if len(todos) > 20:
|
|
raise ValueError("Max 20 todos allowed")
|
|
|
|
validated = []
|
|
in_progress_count = 0
|
|
for index, todo in enumerate(todos):
|
|
if not isinstance(todo, dict):
|
|
raise ValueError(f"todos[{index}] must be an object")
|
|
|
|
content = str(todo.get("content", "")).strip()
|
|
status = str(todo.get("status", "pending")).lower()
|
|
if not content:
|
|
raise ValueError(f"todos[{index}] requires content")
|
|
if status not in ("pending", "in_progress", "completed"):
|
|
raise ValueError(f"todos[{index}] has invalid status '{status}'")
|
|
if status == "in_progress":
|
|
in_progress_count += 1
|
|
validated.append({"content": content, "status": status})
|
|
|
|
if in_progress_count > 1:
|
|
raise ValueError("Only one todo can be in_progress at a time")
|
|
|
|
self.items = validated
|
|
return self.render()
|
|
|
|
def render(self) -> str:
|
|
if not self.items:
|
|
return "No todos."
|
|
|
|
lines = []
|
|
for todo in self.items:
|
|
marker = {
|
|
"pending": "[ ]",
|
|
"in_progress": "[>]",
|
|
"completed": "[x]",
|
|
}[todo["status"]]
|
|
lines.append(f"{marker} {todo['content']}")
|
|
|
|
done = sum(todo["status"] == "completed" for todo in self.items)
|
|
lines.append(f"\n({done}/{len(self.items)} completed)")
|
|
return "\n".join(lines)
|
|
|
|
|
|
TODO = TodoManager()
|
|
|
|
|
|
def run_todo_write(todos: list | str) -> str:
|
|
try:
|
|
output = TODO.update(todos)
|
|
except ValueError as e:
|
|
return f"Error: {e}"
|
|
print(f"\n\033[33m## Current Tasks\033[0m\n{output}")
|
|
return output
|
|
|
|
TOOLS = [
|
|
{"name": "bash", "description": "Run a shell command.",
|
|
"input_schema": {"type": "object", "properties": {"command": {"type": "string"}}, "required": ["command"]}},
|
|
{"name": "read_file", "description": "Read file contents.",
|
|
"input_schema": {"type": "object", "properties": {"path": {"type": "string"}, "limit": {"type": "integer"}}, "required": ["path"]}},
|
|
{"name": "write_file", "description": "Write content to a file.",
|
|
"input_schema": {"type": "object", "properties": {"path": {"type": "string"}, "content": {"type": "string"}}, "required": ["path", "content"]}},
|
|
{"name": "edit_file", "description": "Replace exact text in a file once.",
|
|
"input_schema": {"type": "object", "properties": {"path": {"type": "string"}, "old_text": {"type": "string"}, "new_text": {"type": "string"}}, "required": ["path", "old_text", "new_text"]}},
|
|
{"name": "glob", "description": "Find files matching a glob pattern.",
|
|
"input_schema": {"type": "object", "properties": {"pattern": {"type": "string"}}, "required": ["pattern"]}},
|
|
# s05: new tool
|
|
{"name": "todo_write", "description": "Create and manage a task list for your current coding session.",
|
|
"input_schema": {"type": "object", "properties": {"todos": {"type": "array", "maxItems": 20, "items": {"type": "object", "properties": {"content": {"type": "string", "minLength": 1}, "status": {"type": "string", "enum": ["pending", "in_progress", "completed"]}}, "required": ["content", "status"]}}}, "required": ["todos"]}},
|
|
]
|
|
|
|
TOOL_HANDLERS = {
|
|
"bash": run_bash, "read_file": run_read, "write_file": run_write,
|
|
"edit_file": run_edit, "glob": run_glob, "todo_write": run_todo_write,
|
|
}
|
|
|
|
|
|
# -- Hook system from s04 --
|
|
|
|
HOOKS = {"UserPromptSubmit": [], "PreToolUse": [], "PostToolUse": [], "Stop": []}
|
|
|
|
def register_hook(event: str, callback):
|
|
HOOKS[event].append(callback)
|
|
|
|
def trigger_hooks(event: str, *args):
|
|
for callback in HOOKS[event]:
|
|
result = callback(*args)
|
|
if result is not None:
|
|
return result
|
|
return None
|
|
|
|
DENY_LIST = ["rm -rf /", "sudo", "shutdown", "reboot", "mkfs", "dd if="]
|
|
DESTRUCTIVE = ["rm ", "> /etc/", "chmod 777"]
|
|
|
|
def permission_hook(block):
|
|
"""PreToolUse: s03 permission logic, registered as an s04 hook."""
|
|
if block.name == "bash":
|
|
command = block.input.get("command", "")
|
|
for pattern in DENY_LIST:
|
|
if pattern in command:
|
|
print(f"\n\033[31m[blocked] '{pattern}'\033[0m")
|
|
return "Permission denied by deny list"
|
|
for keyword in DESTRUCTIVE:
|
|
if keyword in command:
|
|
print(f"\n\033[33m[permission] Potentially destructive command\033[0m")
|
|
print(f" Tool: {block.name}({block.input})")
|
|
choice = input(" Allow? [y/N] ").strip().lower()
|
|
if choice not in ("y", "yes"):
|
|
return "Permission denied by user"
|
|
if block.name in ("read_file", "write_file", "edit_file"):
|
|
path = block.input.get("path", "")
|
|
if not (WORKDIR / path).resolve().is_relative_to(WORKDIR):
|
|
print(f"\n\033[33m[permission] Access outside workspace\033[0m")
|
|
print(f" Tool: {block.name}({block.input})")
|
|
choice = input(" Allow? [y/N] ").strip().lower()
|
|
if choice not in ("y", "yes"):
|
|
return "Permission denied by user"
|
|
return None
|
|
|
|
def log_hook(block):
|
|
"""PreToolUse: log every tool call."""
|
|
args_preview = str(list(block.input.values())[:2])[:60]
|
|
print(f"\033[90m[HOOK] {block.name}({args_preview})\033[0m")
|
|
return None
|
|
|
|
def large_output_hook(block, output):
|
|
"""PostToolUse: warn on large output."""
|
|
if len(str(output)) > 100000:
|
|
print(f"\033[33m[HOOK] Large output from {block.name}: {len(str(output))} chars\033[0m")
|
|
return None
|
|
|
|
def context_inject_hook(query: str):
|
|
"""UserPromptSubmit: log working directory."""
|
|
print(f"\033[90m[HOOK] UserPromptSubmit: working in {WORKDIR}\033[0m")
|
|
return None
|
|
|
|
def summary_hook(messages: list):
|
|
"""Stop: print tool call count."""
|
|
tool_count = sum(1 for m in messages
|
|
for b in (m.get("content") if isinstance(m.get("content"), list) else [])
|
|
if isinstance(b, dict) and b.get("type") == "tool_result")
|
|
print(f"\033[90m[HOOK] Stop: session used {tool_count} tool calls\033[0m")
|
|
return None
|
|
|
|
register_hook("UserPromptSubmit", context_inject_hook)
|
|
register_hook("PreToolUse", permission_hook)
|
|
register_hook("PreToolUse", log_hook)
|
|
register_hook("PostToolUse", large_output_hook)
|
|
register_hook("Stop", summary_hook)
|
|
|
|
|
|
# -- Agent loop with the reminder counter --
|
|
|
|
def agent_loop(messages: list):
|
|
rounds_since_todo = 0
|
|
while True:
|
|
response = client.messages.create(
|
|
model=MODEL, system=SYSTEM, messages=messages,
|
|
tools=TOOLS, max_tokens=8000,
|
|
)
|
|
messages.append({"role": "assistant", "content": response.content})
|
|
|
|
tool_calls = [
|
|
block for block in response.content if block.type == "tool_use"
|
|
]
|
|
if not tool_calls:
|
|
force = trigger_hooks("Stop", messages)
|
|
if force:
|
|
messages.append({"role": "user", "content": force})
|
|
continue
|
|
return
|
|
|
|
results = []
|
|
used_todo = False
|
|
for block in tool_calls:
|
|
blocked = trigger_hooks("PreToolUse", block)
|
|
if blocked:
|
|
results.append({"type": "tool_result", "tool_use_id": block.id,
|
|
"content": str(blocked)})
|
|
continue
|
|
|
|
handler = TOOL_HANDLERS.get(block.name)
|
|
try:
|
|
output = handler(**block.input) if handler else f"Unknown: {block.name}"
|
|
except Exception as e:
|
|
output = f"Error: {e}"
|
|
|
|
trigger_hooks("PostToolUse", block, output)
|
|
|
|
if block.name == "todo_write":
|
|
used_todo = True
|
|
|
|
results.append({"type": "tool_result", "tool_use_id": block.id,
|
|
"content": str(output)})
|
|
|
|
rounds_since_todo = 0 if used_todo else rounds_since_todo + 1
|
|
if rounds_since_todo >= 3:
|
|
results.append({"type": "text",
|
|
"text": "<reminder>Update your todos.</reminder>"})
|
|
rounds_since_todo = 0
|
|
|
|
messages.append({"role": "user", "content": results})
|
|
|
|
|
|
if __name__ == "__main__":
|
|
print("s05: TodoWrite - plan before execution")
|
|
print("Enter a question, press Enter to send. Type q to quit.\n")
|
|
|
|
history = []
|
|
while True:
|
|
try:
|
|
query = input("\001\033[36m\002s05 >> \001\033[0m\002")
|
|
except (EOFError, KeyboardInterrupt):
|
|
break
|
|
if query.strip().lower() in ("q", "exit", ""):
|
|
break
|
|
trigger_hooks("UserPromptSubmit", query)
|
|
history.append({"role": "user", "content": query})
|
|
agent_loop(history)
|
|
for block in history[-1]["content"]:
|
|
if getattr(block, "type", None) == "text":
|
|
print(block.text)
|
|
print()
|