Relax prefill parser to allow space. (#21240)

* Relax prefill parser to allow space.

* Move changes from prefix() to parser generation

* Only allow spaces if we're not having a pure content parser next
This commit is contained in:
Piotr Wilkin (ilintar) 2026-04-02 11:29:11 +02:00 committed by GitHub
parent 6137c325a1
commit e15efe007d
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2 changed files with 5 additions and 2 deletions

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@ -100,6 +100,7 @@ common_peg_arena autoparser::build_parser(const generation_params & inputs) cons
bool has_tools = inputs.tools.is_array() && !inputs.tools.empty();
bool has_response_format = inputs.json_schema.is_object() && !inputs.json_schema.empty();
bool pure_content = reasoning.mode == reasoning_mode::NONE;
if (has_response_format) {
auto response_format = p.rule("response-format", p.content(p.schema(p.json(), "response-format-schema", inputs.json_schema)));
@ -107,12 +108,14 @@ common_peg_arena autoparser::build_parser(const generation_params & inputs) cons
p.literal("```json") + p.space() + response_format + p.space() + p.literal("```"),
response_format
}) + p.end();
pure_content = false;
} else if (has_tools && inputs.tool_choice != COMMON_CHAT_TOOL_CHOICE_NONE && jinja_caps.supports_tool_calls) {
parser = tools.build_parser(ctx);
pure_content = false;
} else {
parser = content.build_parser(ctx);
}
return p.prefix(inputs.generation_prompt, reasoning.start) + parser;
return pure_content ? p.prefix(inputs.generation_prompt, reasoning.start) + parser : p.prefix(inputs.generation_prompt, reasoning.start) << parser;
});
}

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@ -1709,7 +1709,7 @@ static common_chat_params common_chat_templates_apply_jinja(const struct common_
data.format = COMMON_CHAT_FORMAT_PEG_NATIVE;
data.generation_prompt = params.generation_prompt;
auto parser = build_chat_peg_parser([&params](common_chat_peg_builder &p) {
return p.prefix(params.generation_prompt) + p.content(p.rest());
return p.prefix(params.generation_prompt) << p.content(p.rest());
});
data.parser = parser.save();
return data;