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common : do not pass prompt tokens to reasoning budget sampler (#22488)

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This commit is contained in:
Aldehir Rojas
2026-04-29 14:10:58 -05:00
committed by GitHub
parent 41a63be28e
commit d77599234e
4 changed files with 40 additions and 72 deletions
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28
common/reasoning-budget.cpp
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@@ -232,34 +232,6 @@ static struct llama_sampler * common_reasoning_budget_init_state(
);
}
struct llama_sampler * common_reasoning_budget_init(
const struct llama_vocab * vocab,
const std::vector<llama_token> & start_tokens,
const std::vector<llama_token> & end_tokens,
const std::vector<llama_token> & forced_tokens,
int32_t budget,
const std::vector<llama_token> & prefill_tokens) {
// Determine initial state from prefill: COUNTING if the prefill begins with
// the start sequence but does not also contain the end sequence after it.
common_reasoning_budget_state initial_state = REASONING_BUDGET_IDLE;
if (!prefill_tokens.empty() && !start_tokens.empty() &&
prefill_tokens.size() >= start_tokens.size() &&
std::equal(start_tokens.begin(), start_tokens.end(), prefill_tokens.begin())) {
initial_state = REASONING_BUDGET_COUNTING;
// If the end sequence also follows the start in the prefill, reasoning
// was opened and immediately closed — stay IDLE.
if (!end_tokens.empty() &&
prefill_tokens.size() >= start_tokens.size() + end_tokens.size()) {
auto end_start = prefill_tokens.end() - (ptrdiff_t) end_tokens.size();
if (end_start >= prefill_tokens.begin() + (ptrdiff_t) start_tokens.size() &&
std::equal(end_tokens.begin(), end_tokens.end(), end_start)) {
initial_state = REASONING_BUDGET_IDLE;
}
}
}
return common_reasoning_budget_init_state(vocab, start_tokens, end_tokens, forced_tokens, budget, initial_state);
}
struct llama_sampler * common_reasoning_budget_init(
const struct llama_vocab * vocab,
const std::vector<llama_token> & start_tokens,