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| S )z1Convert custom tag delimiters back into XML tags.zzz z
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z)z[[tool]]z [[/tool]]z[[tool_input]]z[[/tool_input]]z[[observation]]z[[/observation]])itemsreplace)r Z replacementsreplorig r j/home/app/PaddleOCR-VL/.venv_paddleocr/lib/python3.10/site-packages/langchain/agents/output_parsers/xml.py _unescape
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S )XMLAgentOutputParsera Parses tool invocations and final answers from XML-formatted agent output.
This parser extracts structured information from XML tags to determine whether
an agent should perform a tool action or provide a final answer. It includes
built-in escaping support to safely handle tool names and inputs
containing XML special characters.
Args:
escape_format: The escaping format to use when parsing XML content.
Supports 'minimal' which uses custom delimiters like [[tool]] to replace
XML tags within content, preventing parsing conflicts.
Use 'minimal' if using a corresponding encoding format that uses
the _escape function when formatting the output (e.g., with format_xml).
Expected formats:
Tool invocation (returns AgentAction):
search
what is 2 + 2
Final answer (returns AgentFinish):
The answer is 4
Note:
Minimal escaping allows tool names containing XML tags to be safely
represented. For example, a tool named "searchnested" would be
escaped as "search[[tool]]nested[[/tool]]" in the XML and automatically
unescaped during parsing.
Raises:
ValueError: If the input doesn't match either expected XML format or
contains malformed XML structure.
minimal)default
escape_formatr r
c C s t d|t j}|rVt|dkr dt| d}t||d }t d|t j}t|dkr:dt| d}t||r@|d nd}| jd krOt|}t|}t|||d
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|t j}t|dkrrd}t||d }| jd krt|}td|i|dS d}t|)Nz(.*?) zHMalformed tool invocation: expected exactly one block, but found .r z (.*?)zNMalformed tool invocation: expected at most one block, but found r )ZtoolZ
tool_inputlogzzz"(.*?)zNMalformed output: expected exactly one ... block.output)Z
return_valuesr zTMalformed output: expected either a tool invocation or a final answer in XML format.) refindallDOTALLlen
ValueErrorr r r r ) selfr Z tool_matchesmsgZ_toolZ
input_matchesZ _tool_inputmatchesZanswerr r r parseD sH
zXMLAgentOutputParser.parsec C s t )N)NotImplementedErrorr r r r get_format_instructionsv s z,XMLAgentOutputParser.get_format_instructionsc C s dS )Nz xml-agentr r% r r r _typey s zXMLAgentOutputParser._typeN)__name__
__module__ __qualname____doc__r r r r __annotations__strr r r r# r& propertyr' r r r r r s
!2r )r typingr r r Zlangchain_core.agentsr r Zpydanticr Zlangchain.agentsr r- r r r r r r s