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common/parser: add proper reasoning tag prefill reading (#20424)

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* Implement proper prefill extraction

* Refactor cli parameters, update docs, move reasoning budget sampler part to common/reasoning-budget.cpp

* Update tools/server/server-task.cpp

* refactor: move grammars to variant, remove grammar_external, handle exception internally

* Make code less C++y

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
This commit is contained in:
Piotr Wilkin (ilintar)
2026-03-19 16:58:21 +01:00
committed by GitHub
parent c1258830b2
commit 5e54d51b19
33 changed files with 651 additions and 454 deletions
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common/chat-peg-parser.cpp
+14
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@@ -229,6 +229,20 @@ void common_chat_peg_mapper::from_ast(const common_peg_ast_arena & arena,
result.tool_calls.push_back(pending_tool_call.value());
pending_tool_call.reset();
}
// Discard whitespace-only reasoning content (e.g. from <think></think> prefill)
if (!result.reasoning_content.empty()) {
bool all_whitespace = true;
for (char c : result.reasoning_content) {
if (c != ' ' && c != '\n' && c != '\r' && c != '\t') {
all_whitespace = false;
break;
}
}
if (all_whitespace) {
result.reasoning_content.clear();
}
}
}
void common_chat_peg_mapper::map(const common_peg_ast_node & node) {