mirror of
https://github.com/meta-llama/llama-stack.git
synced 2025-06-27 18:50:41 +00:00
feat: support '-' in tool names (#1807)
# What does this PR do? titled ## Test Plan added new unit tests pytest -s -v tests/unit/models/llama/llama3/test_tool_utils.py
This commit is contained in:
ehhuang
GitHub
parent
ef3dc143ec
commit
ad86a68a32
2 changed files with 275 additions and 76 deletions
|
|
@ -4,13 +4,6 @@
|
|||
# This source code is licensed under the terms described in the LICENSE file in
|
||||
# the root directory of this source tree.
|
||||
|
||||
# Copyright (c) Meta Platforms, Inc. and affiliates.
|
||||
# All rights reserved.
|
||||
#
|
||||
# This source code is licensed under the terms described in the LICENSE file in
|
||||
# top-level folder for each specific model found within the models/ directory at
|
||||
# the top-level of this source tree.
|
||||
import ast
|
||||
import json
|
||||
import re
|
||||
from typing import Optional, Tuple
|
||||
|
|
@ -35,80 +28,141 @@ def is_json(s):
|
|||
return True
|
||||
|
||||
|
||||
def is_valid_python_list(input_string):
|
||||
"""Check if the input string is a valid Python list of function calls"""
|
||||
try:
|
||||
# Try to parse the string
|
||||
tree = ast.parse(input_string)
|
||||
|
||||
# Check if it's a single expression
|
||||
if len(tree.body) != 1 or not isinstance(tree.body[0], ast.Expr):
|
||||
return False
|
||||
|
||||
# Check if the expression is a list
|
||||
expr = tree.body[0].value
|
||||
if not isinstance(expr, ast.List):
|
||||
return False
|
||||
|
||||
# Check if the list is empty
|
||||
if len(expr.elts) == 0:
|
||||
return False
|
||||
|
||||
# Check if all elements in the list are function calls
|
||||
for element in expr.elts:
|
||||
if not isinstance(element, ast.Call):
|
||||
return False
|
||||
|
||||
# Check if the function call has a valid name
|
||||
if not isinstance(element.func, ast.Name):
|
||||
return False
|
||||
|
||||
# Check if all arguments are keyword arguments
|
||||
if element.args or not all(isinstance(arg, ast.keyword) for arg in element.keywords):
|
||||
return False
|
||||
|
||||
return True
|
||||
|
||||
except SyntaxError:
|
||||
# If parsing fails, it's not a valid Python expression
|
||||
return False
|
||||
|
||||
|
||||
def parse_python_list_for_function_calls(input_string):
|
||||
def parse_llama_tool_call_format(input_string):
|
||||
"""
|
||||
Parse a Python list of function calls and
|
||||
return a list of tuples containing the function name and arguments
|
||||
"""
|
||||
# Parse the string into an AST
|
||||
tree = ast.parse(input_string)
|
||||
Parse tool calls in the format:
|
||||
[func_name1(params_name1=params_value1, params_name2=params_value2...), func_name2(params)]
|
||||
|
||||
# Ensure the input is a list
|
||||
if not isinstance(tree.body[0], ast.Expr) or not isinstance(tree.body[0].value, ast.List):
|
||||
raise ValueError("Input must be a list of function calls")
|
||||
Returns a list of (function_name, arguments_dict) tuples or None if parsing fails.
|
||||
"""
|
||||
# Strip outer brackets and whitespace
|
||||
input_string = input_string.strip()
|
||||
if not (input_string.startswith("[") and input_string.endswith("]")):
|
||||
return None
|
||||
|
||||
content = input_string[1:-1].strip()
|
||||
if not content:
|
||||
return None
|
||||
|
||||
result = []
|
||||
|
||||
# Iterate through each function call in the list
|
||||
for node in tree.body[0].value.elts:
|
||||
if isinstance(node, ast.Call):
|
||||
function_name = node.func.id
|
||||
function_args = {}
|
||||
# State variables for parsing
|
||||
pos = 0
|
||||
length = len(content)
|
||||
|
||||
# Extract keyword arguments
|
||||
for keyword in node.keywords:
|
||||
try:
|
||||
function_args[keyword.arg] = ast.literal_eval(keyword.value)
|
||||
except ValueError as e:
|
||||
logger.error(
|
||||
f"Error parsing tool call argument '{keyword.arg}': {e}, full input string: '{input_string}'"
|
||||
)
|
||||
raise ValueError(
|
||||
f"Error parsing tool call argument '{keyword.arg}', full input string: '{input_string}'"
|
||||
) from e
|
||||
while pos < length:
|
||||
# Find function name
|
||||
name_end = content.find("(", pos)
|
||||
if name_end == -1:
|
||||
break
|
||||
|
||||
result.append((function_name, function_args))
|
||||
func_name = content[pos:name_end].strip()
|
||||
|
||||
return result
|
||||
# Find closing parenthesis for this function call
|
||||
paren_level = 1
|
||||
args_start = name_end + 1
|
||||
args_end = args_start
|
||||
|
||||
while args_end < length and paren_level > 0:
|
||||
if content[args_end] == "(":
|
||||
paren_level += 1
|
||||
elif content[args_end] == ")":
|
||||
paren_level -= 1
|
||||
args_end += 1
|
||||
|
||||
if paren_level != 0:
|
||||
# Unmatched parentheses
|
||||
return None
|
||||
|
||||
# Parse arguments
|
||||
args_str = content[args_start : args_end - 1].strip()
|
||||
args_dict = {}
|
||||
|
||||
if args_str:
|
||||
# Split by commas, but respect nested structures
|
||||
parts = []
|
||||
part_start = 0
|
||||
in_quotes = False
|
||||
quote_char = None
|
||||
nested_level = 0
|
||||
|
||||
for i, char in enumerate(args_str):
|
||||
if char in ('"', "'") and (i == 0 or args_str[i - 1] != "\\"):
|
||||
if not in_quotes:
|
||||
in_quotes = True
|
||||
quote_char = char
|
||||
elif char == quote_char:
|
||||
in_quotes = False
|
||||
quote_char = None
|
||||
elif not in_quotes:
|
||||
if char in ("{", "["):
|
||||
nested_level += 1
|
||||
elif char in ("}", "]"):
|
||||
nested_level -= 1
|
||||
elif char == "," and nested_level == 0:
|
||||
parts.append(args_str[part_start:i].strip())
|
||||
part_start = i + 1
|
||||
|
||||
parts.append(args_str[part_start:].strip())
|
||||
|
||||
# Process each key=value pair
|
||||
for part in parts:
|
||||
if "=" in part:
|
||||
key, value = part.split("=", 1)
|
||||
key = key.strip()
|
||||
value = value.strip()
|
||||
|
||||
# Try to convert value to appropriate Python type
|
||||
if (value.startswith('"') and value.endswith('"')) or (
|
||||
value.startswith("'") and value.endswith("'")
|
||||
):
|
||||
# String
|
||||
value = value[1:-1]
|
||||
elif value.lower() == "true":
|
||||
value = True
|
||||
elif value.lower() == "false":
|
||||
value = False
|
||||
elif value.lower() == "none":
|
||||
value = None
|
||||
elif value.startswith("{") and value.endswith("}"):
|
||||
# This is a nested dictionary
|
||||
try:
|
||||
# Try to parse as JSON
|
||||
value = json.loads(value.replace("'", '"'))
|
||||
except json.JSONDecodeError:
|
||||
# Keep as string if parsing fails
|
||||
pass
|
||||
elif value.startswith("[") and value.endswith("]"):
|
||||
# This is a nested list
|
||||
try:
|
||||
# Try to parse as JSON
|
||||
value = json.loads(value.replace("'", '"'))
|
||||
except json.JSONDecodeError:
|
||||
# Keep as string if parsing fails
|
||||
pass
|
||||
else:
|
||||
# Try to convert to number
|
||||
try:
|
||||
if "." in value:
|
||||
value = float(value)
|
||||
else:
|
||||
value = int(value)
|
||||
except ValueError:
|
||||
# Keep as string if not a valid number
|
||||
pass
|
||||
|
||||
args_dict[key] = value
|
||||
|
||||
result.append((func_name, args_dict))
|
||||
|
||||
# Move to the next function call
|
||||
pos = args_end
|
||||
|
||||
# Skip the comma between function calls if present
|
||||
if pos < length and content[pos] == ",":
|
||||
pos += 1
|
||||
|
||||
return result if result else None
|
||||
|
||||
|
||||
class ToolUtils:
|
||||
|
|
@ -156,11 +210,11 @@ class ToolUtils:
|
|||
return function_name, args
|
||||
else:
|
||||
return None
|
||||
elif is_valid_python_list(message_body):
|
||||
res = parse_python_list_for_function_calls(message_body)
|
||||
elif function_calls := parse_llama_tool_call_format(message_body):
|
||||
# FIXME: Enable multiple tool calls
|
||||
return res[0]
|
||||
return function_calls[0]
|
||||
else:
|
||||
logger.debug(f"Did not parse tool call from message body: {message_body}")
|
||||
return None
|
||||
|
||||
@staticmethod
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue