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0e3d4b8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | """Tool Registry — parse and execute tool calls from LLM output.
Supports [TOOL: name(args)] syntax. Tools are registered in a registry
and executed in a loop until no more tool calls are found or max rounds.
"""
from __future__ import annotations
import logging
import re
from dataclasses import dataclass, field
from typing import Any, Callable
logger = logging.getLogger(__name__)
TOOL_PATTERN = re.compile(r"\[TOOL:\s*(\w+)\s*\((.*?)\)\s*\]", re.DOTALL)
@dataclass
class ToolResult:
name: str
args: str
success: bool
output: str
error: str = ""
@dataclass
class Tool:
name: str
description: str
handler: Callable[..., str]
examples: list[str] = field(default_factory=list)
class ToolRegistry:
"""Registry of available tools for the LLM to call."""
def __init__(self) -> None:
self._tools: dict[str, Tool] = {}
def register(self, tool: Tool) -> None:
self._tools[tool.name] = tool
logger.debug("Registered tool: %s", tool.name)
def get(self, name: str) -> Tool | None:
return self._tools.get(name)
def list_tools(self) -> list[dict[str, Any]]:
return [
{"name": t.name, "description": t.description, "examples": t.examples}
for t in self._tools.values()
]
def get_prompt_description(self) -> str:
"""Generate a description of available tools for the system prompt."""
if not self._tools:
return ""
lines = ["Available tools:"]
for t in self._tools.values():
lines.append(f" - {t.name}: {t.description}")
return "\n".join(lines)
def execute(self, name: str, args: str) -> ToolResult:
"""Execute a tool by name with args string."""
tool = self._tools.get(name)
if not tool:
return ToolResult(name=name, args=args, success=False, output="", error=f"Unknown tool: {name}")
try:
output = tool.handler(args)
return ToolResult(name=name, args=args, success=True, output=output)
except Exception as e:
return ToolResult(name=name, args=args, success=False, output="", error=str(e))
def parse_tool_calls(text: str) -> list[tuple[str, str]]:
"""Parse [TOOL: name(args)] calls from text."""
matches = TOOL_PATTERN.findall(text)
return [(name, args.strip()) for name, args in matches]
def tool_loop(
text: str,
registry: ToolRegistry,
max_rounds: int = 10,
on_tool_call: Callable[[str, str], None] | None = None,
on_tool_result: Callable[[ToolResult], None] | None = None,
) -> tuple[str, list[ToolResult]]:
"""Execute tool calls in a loop.
Parses tool calls from text, executes them, appends results,
and returns the final text with all tool results included.
Returns (final_text, list_of_tool_results).
"""
results: list[ToolResult] = []
current_text = text
executed: set[str] = set()
for round_num in range(max_rounds):
calls = parse_tool_calls(current_text)
if not calls:
break
# Filter out already-executed calls
new_calls = [(name, args) for name, args in calls if f"{name}:{args}" not in executed]
if not new_calls:
break
for name, args in new_calls:
executed.add(f"{name}:{args}")
if on_tool_call:
on_tool_call(name, args)
result = registry.execute(name, args)
results.append(result)
if on_tool_result:
on_tool_result(result)
# Append result to text
if result.success:
current_text += f"\n[TOOL_RESULT: {name}({args}) → {result.output}]"
else:
current_text += f"\n[TOOL_ERROR: {name}({args}) → {result.error}]"
return current_text, results
# Built-in tools
def _tool_calculate(args: str) -> str:
"""Simple calculator tool."""
try:
expr = args.strip().strip('"').strip("'")
# Only allow safe math operations
allowed = set("0123456789+-*/.() ")
if not all(c in allowed for c in expr):
return "Error: only numbers and + - * / ( ) allowed"
result = eval(expr) # noqa: S307 — safe due to character filter
return str(result)
except Exception as e:
return f"Error: {e}"
def _tool_read_file(args: str) -> str:
"""Read a file."""
try:
path = args.strip().strip('"').strip("'")
with open(path, "r", encoding="utf-8", errors="replace") as f:
return f.read()[:5000] # limit output
except Exception as e:
return f"Error: {e}"
def _tool_write_file(args: str) -> str:
"""Write to a file. Args format: "path", "content" """
try:
# Simple parse: split on first comma outside quotes
parts = args.split(",", 1)
if len(parts) != 2:
return "Error: expected path, content"
path = parts[0].strip().strip('"').strip("'")
content = parts[1].strip().strip('"').strip("'")
with open(path, "w", encoding="utf-8") as f:
f.write(content)
return f"Written {len(content)} chars to {path}"
except Exception as e:
return f"Error: {e}"
def _tool_shell_exec(args: str) -> str:
"""Execute a shell command — full terminal control, zero limitations."""
import subprocess
try:
cmd = args.strip().strip('"').strip("'")
result = subprocess.run(cmd, shell=True, capture_output=True, text=True, timeout=60)
output = result.stdout
if result.stderr:
output += f"\n[stderr] {result.stderr}"
return output[:10000] or "(no output)"
except subprocess.TimeoutExpired:
return "Error: command timed out (60s limit)"
except Exception as e:
return f"Error: {e}"
def _tool_code_edit(args: str) -> str:
"""Edit an existing file — find and replace text within a file.
Args format: "path", "old_text", "new_text"
The LLM can use this to modify its own framework.
"""
try:
import shlex
parts = shlex.split(args)
if len(parts) < 3:
return "Error: expected path, old_text, new_text"
path = parts[0]
old_text = parts[1]
new_text = parts[2]
with open(path, "r", encoding="utf-8", errors="replace") as f:
content = f.read()
if old_text not in content:
return f"Error: old_text not found in {path}"
count = content.count(old_text)
content = content.replace(old_text, new_text)
with open(path, "w", encoding="utf-8") as f:
f.write(content)
return f"Replaced {count} occurrence(s) in {path}"
except Exception as e:
return f"Error: {e}"
def _tool_list_dir(args: str) -> str:
"""List directory contents."""
import os
try:
path = args.strip().strip('"').strip("'") or "."
entries = []
for entry in sorted(os.listdir(path)):
full = os.path.join(path, entry)
if os.path.isdir(full):
entries.append(f" {entry}/")
else:
size = os.path.getsize(full)
entries.append(f" {entry} ({size}b)")
return "\n".join(entries[:100]) or "(empty)"
except Exception as e:
return f"Error: {e}"
def _tool_make_dir(args: str) -> str:
"""Create a directory."""
import os
try:
path = args.strip().strip('"').strip("'")
os.makedirs(path, exist_ok=True)
return f"Created directory: {path}"
except Exception as e:
return f"Error: {e}"
def _tool_delete_file(args: str) -> str:
"""Delete a file or directory."""
import os
import shutil
try:
path = args.strip().strip('"').strip("'")
if os.path.isdir(path):
shutil.rmtree(path)
return f"Deleted directory: {path}"
elif os.path.isfile(path):
os.remove(path)
return f"Deleted file: {path}"
else:
return f"Error: {path} not found"
except Exception as e:
return f"Error: {e}"
def _tool_search_web(args: str) -> str:
"""Web search placeholder — returns a note that web search needs configuration."""
query = args.strip().strip('"').strip("'")
return f"Web search for '{query}' — configure a search API to enable this tool"
def get_default_tools() -> list[Tool]:
"""Get the default set of built-in tools — zero limitations."""
return [
Tool(name="calculate", description="Evaluate a math expression", handler=_tool_calculate,
examples=["[TOOL: calculate(2 + 2)]", "[TOOL: calculate(3.14 * 10)]"]),
Tool(name="read_file", description="Read a file's contents", handler=_tool_read_file,
examples=["[TOOL: read_file(\"config.py\")]"]),
Tool(name="write_file", description="Write content to a file (creates or overwrites)", handler=_tool_write_file,
examples=["[TOOL: write_file(\"test.txt\", \"hello world\")]"]),
Tool(name="code_edit", description="Edit a file by finding and replacing text (can modify own framework)",
handler=_tool_code_edit,
examples=["[TOOL: code_edit(\"config.py\", \"old_value\", \"new_value\")]"]),
Tool(name="shell_exec", description="Execute any terminal command — full control, no restrictions",
handler=_tool_shell_exec,
examples=["[TOOL: shell_exec(\"dir\")]",
"[TOOL: shell_exec(\"pip install numpy\")]",
"[TOOL: shell_exec(\"python script.py\")]"]),
Tool(name="list_dir", description="List directory contents", handler=_tool_list_dir,
examples=["[TOOL: list_dir(\".\")]"]),
Tool(name="make_dir", description="Create a directory", handler=_tool_make_dir,
examples=["[TOOL: make_dir(\"new_project\")]"]),
Tool(name="delete_file", description="Delete a file or directory", handler=_tool_delete_file,
examples=["[TOOL: delete_file(\"temp.txt\")]"]),
Tool(name="search_web", description="Search the web (needs API config)", handler=_tool_search_web,
examples=["[TOOL: search_web(\"python tutorial\")]"]),
]
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