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Implement GenerationTagIgnore Jinja2 extension #2082

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Implement GenerationTagIgnore Jinja2 extension #2082

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Implement GenerationTagIgnore Jinja2 extension
hidehiroanto Oct 21, 2025
e1f9c78
Add 'endgeneration' tag to GenerationTagIgnore
hidehiroanto Oct 21, 2025
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10 changes: 10 additions & 0 deletions llama_cpp/llama_chat_format.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
)

import jinja2
from jinja2.ext import Extension
from jinja2.sandbox import ImmutableSandboxedEnvironment

import numpy as np
Expand Down Expand Up @@ -190,6 +191,14 @@ def __call__(
**kwargs: Any,
) -> ChatFormatterResponse: ...

class GenerationTagIgnore(Extension):
"""Ignores the generation and endgeneration tags in Jinja templates."""

tags = {"generation", "endgeneration"}

def parse(self, parser):
parser.stream.skip(1)
return nodes.Const("")

class Jinja2ChatFormatter(ChatFormatter):
def __init__(
Expand All @@ -213,6 +222,7 @@ def __init__(
loader=jinja2.BaseLoader(),
trim_blocks=True,
lstrip_blocks=True,
extensions=[GenerationTagIgnore]
).from_string(self.template)

@staticmethod
Expand Down