common/parser: handle reasoning budget (#20297)

* v1

* Finished!

* Handlie cli

* Reasoning sampler

* Apply suggestions from code review

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* Less explosive terminology :)

* Add utf-8 case and tests

* common : migrate reasoning budget sampler to common

* cont : clean up

* cont : expose state and allow passing as initial state

* cont : remove unused imports

* cont : update state machine doc string

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
Co-authored-by: Alde Rojas <hello@alde.dev>
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Piotr Wilkin (ilintar) 2026-03-11 10:26:12 +01:00 committed by GitHub
parent 5f91b1d5d5
commit acb7c79069
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18 changed files with 670 additions and 10 deletions

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@ -135,7 +135,9 @@ common_peg_parser analyze_reasoning::build_parser(parser_build_context & ctx) co
if (thinking_forced_open || thinking_forced_closed) {
// Thinking is forced open OR forced closed with enable_thinking=true
// In both cases, expect only the closing tag (opening was in template)
return p.reasoning(p.until(end)) + end;
// However, since we might have incorrectly detected the open/close pattern,
// we admit an optional starting marker
return p.optional(p.literal(start)) + p.reasoning(p.until(end)) + end;
}
if (mode == reasoning_mode::TAG_BASED || mode == reasoning_mode::TOOLS_ONLY) {
// Standard tag-based reasoning OR tools-only mode (reasoning appears with tools)