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ollama/llama/patches/0017-add-ollama-vocab-for-grammar-support.patch
Jeffrey Morgan 8dd12c873d
llama: update to commit e1e8e099 (#10513)
2025-05-01 18:24:09 -07:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: ParthSareen <parth.sareen@ollama.com>
Date: Mon, 21 Apr 2025 13:30:31 -0700
Subject: [PATCH] add ollama vocab for grammar support
---
src/llama-grammar.cpp | 49 ++++++++++++++++++++++++++++++++++++------
src/llama-grammar.h | 14 ++++++++++++
src/llama-sampling.cpp | 4 ++--
3 files changed, 58 insertions(+), 9 deletions(-)
diff --git a/src/llama-grammar.cpp b/src/llama-grammar.cpp
index 973b47ae..60d58236 100644
--- a/src/llama-grammar.cpp
+++ b/src/llama-grammar.cpp
@@ -907,6 +907,7 @@ llama_grammar_candidates llama_grammar_reject_candidates_for_stack(
struct llama_grammar * llama_grammar_init_impl(
const struct llama_vocab * vocab,
+ const struct ollama_vocab * ollama_vocab,
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index) {
@@ -962,6 +963,7 @@ struct llama_grammar * llama_grammar_init_impl(
// then the pointers would be invalidated when the local vec_rules goes out of scope.
return new llama_grammar {
vocab,
+ ollama_vocab,
std::move(vec_rules),
std::move(stacks),
/* .partial_utf8 = */ {},
@@ -975,6 +977,7 @@ struct llama_grammar * llama_grammar_init_impl(
struct llama_grammar * llama_grammar_init_impl(
const struct llama_vocab * vocab,
+ const struct ollama_vocab * ollama_vocab,
const char * grammar_str,
const char * grammar_root,
bool lazy,
@@ -1067,6 +1070,7 @@ struct llama_grammar * llama_grammar_init_impl(
// then the pointers would be invalidated when the local vec_rules goes out of scope.
return new llama_grammar {
vocab,
+ ollama_vocab,
std::move(vec_rules),
std::move(stacks),
/* .partial_utf8 = */ {},
@@ -1089,6 +1093,7 @@ void llama_grammar_free_impl(struct llama_grammar * grammar) {
struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & grammar) {
auto * result = new llama_grammar {
grammar.vocab,
+ grammar.o_vocab,
grammar.rules,
grammar.stacks,
grammar.partial_utf8,
@@ -1116,7 +1121,6 @@ struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & gra
}
void llama_grammar_apply_impl(const struct llama_grammar & grammar, llama_token_data_array * cur_p) {
- GGML_ASSERT(grammar.vocab != nullptr);
if (grammar.awaiting_trigger) {
return;
@@ -1138,9 +1142,13 @@ void llama_grammar_apply_impl(const struct llama_grammar & grammar, llama_token_
for (size_t i = 0; i < cur_p->size; ++i) {
const llama_token id = cur_p->data[i].id;
- const std::string & piece = grammar.vocab->token_to_piece(id);
+ const std::string piece = grammar.o_vocab ?
+ grammar.o_vocab->token_to_piece(id) :
+ grammar.vocab->token_to_piece(id);
- if (grammar.vocab->is_eog(id)) {
+ const bool is_eog = grammar.o_vocab ? grammar.o_vocab->is_eog(id) : grammar.vocab->is_eog(id);
+
+ if (is_eog) {
if (!allow_eog) {
cur_p->data[i].logit = -INFINITY;
}
@@ -1159,9 +1167,10 @@ void llama_grammar_apply_impl(const struct llama_grammar & grammar, llama_token_
}
void llama_grammar_accept_impl(struct llama_grammar & grammar, llama_token token) {
- GGML_ASSERT(grammar.vocab != nullptr);
- const auto & piece = grammar.vocab->token_to_piece(token);
+ const std::string piece = grammar.o_vocab ?
+ grammar.o_vocab->token_to_piece(token) :
+ grammar.vocab->token_to_piece(token);
if (grammar.awaiting_trigger) {
if (std::find(grammar.trigger_tokens.begin(), grammar.trigger_tokens.end(), token) != grammar.trigger_tokens.end()) {
@@ -1191,13 +1200,14 @@ void llama_grammar_accept_impl(struct llama_grammar & grammar, llama_token token
}
}
- if (grammar.vocab->is_eog(token)) {
+ const bool is_eog = grammar.o_vocab ? grammar.o_vocab->is_eog(token) : grammar.vocab->is_eog(token);
+ if (is_eog) {
for (const auto & stack : grammar.stacks) {
if (stack.empty()) {
return;
}
}
- GGML_ABORT("fatal error");
+ GGML_ABORT("grammar error: end of grammar token received but grammar stack is not empty");
}
llama_grammar_accept_str(grammar, piece);
@@ -1217,3 +1227,28 @@ void llama_grammar_accept_str(struct llama_grammar & grammar, const std::string
throw std::runtime_error("Unexpected empty grammar stack after accepting piece: " + piece);
}
}
+
+
+const std::string & ollama_vocab::token_to_piece(const uint32_t token) const {
+ try {
+ return token_to_piece_map.at(token);
+ } catch (const std::out_of_range&) {
+ throw std::runtime_error("Token not found in vocabulary: " + std::to_string(token));
+ }
+}
+
+void ollama_vocab::add_token_pieces(const uint32_t* tokens, size_t n_tokens, const char** pieces) {
+ for (size_t i = 0; i < n_tokens; i++) {
+ token_to_piece_map[tokens[i]] = pieces[i];
+ }
+}
+
+bool ollama_vocab::is_eog(const uint32_t token) const {
+ return special_eog_ids.count(token) > 0;
+}
+
+void ollama_vocab::set_eog_tokens(const uint32_t* tokens, size_t n_tokens) {
+ for (size_t i = 0; i < n_tokens; i++) {
+ special_eog_ids.insert(tokens[i]);
+ }
+}
diff --git a/src/llama-grammar.h b/src/llama-grammar.h
index f8c291de..2a3a62db 100644
--- a/src/llama-grammar.h
+++ b/src/llama-grammar.h
@@ -6,8 +6,19 @@
#include <regex>
#include <string>
#include <vector>
+#include <set>
struct llama_vocab;
+struct ollama_vocab {
+ std::map<uint32_t, std::string> token_to_piece_map;
+ std::set<uint32_t> special_eog_ids;
+
+ const std::string & token_to_piece(const uint32_t token) const;
+ void add_token_pieces(const uint32_t* tokens, size_t n_tokens, const char** pieces);
+ void set_eog_tokens(const uint32_t* tokens, size_t n_tokens);
+ bool is_eog(const uint32_t token) const;
+
+};
// grammar element type
enum llama_gretype {
@@ -114,6 +125,7 @@ struct llama_grammar_trigger_pattern {
struct llama_grammar {
// note: allow null vocab for testing (not great)
const llama_vocab * vocab;
+ const ollama_vocab * o_vocab;
const llama_grammar_rules rules; // TODO: shared ptr
llama_grammar_stacks stacks;
@@ -141,12 +153,14 @@ struct llama_grammar {
// note: needed for tests (not great)
struct llama_grammar * llama_grammar_init_impl(
const struct llama_vocab * vocab,
+ const struct ollama_vocab * ollama_vocab,
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index);
struct llama_grammar * llama_grammar_init_impl(
const struct llama_vocab * vocab,
+ const struct ollama_vocab * ollama_vocab,
const char * grammar_str,
const char * grammar_root,
bool lazy,
diff --git a/src/llama-sampling.cpp b/src/llama-sampling.cpp
index c0a5f934..75731053 100644
--- a/src/llama-sampling.cpp
+++ b/src/llama-sampling.cpp
@@ -1466,7 +1466,7 @@ static void llama_sampler_grammar_reset(struct llama_sampler * smpl) {
trigger_patterns_c.push_back(trigger_pattern.pattern.c_str());
}
- auto * grammar_new = llama_grammar_init_impl(ctx->grammar->vocab, ctx->grammar_str.c_str(), ctx->grammar_root.c_str(),
+ auto * grammar_new = llama_grammar_init_impl(ctx->grammar->vocab, nullptr, ctx->grammar_str.c_str(), ctx->grammar_root.c_str(),
ctx->grammar->lazy, trigger_patterns_c.data(), trigger_patterns_c.size(),
ctx->grammar->trigger_tokens.data(), ctx->grammar->trigger_tokens.size());
@@ -1548,7 +1548,7 @@ static struct llama_sampler * llama_sampler_init_grammar_impl(
/* .vocab = */ vocab,
/* .grammar_str = */ grammar_str,
/* .grammar_root = */ grammar_root,
- /* .grammar = */ llama_grammar_init_impl(vocab, grammar_str, grammar_root, lazy, trigger_patterns, num_trigger_patterns, trigger_tokens, num_trigger_tokens),
+ /* .grammar = */ llama_grammar_init_impl(vocab, nullptr, grammar_str, grammar_root, lazy, trigger_patterns, num_trigger_patterns, trigger_tokens, num_trigger_tokens),
};
if (!ctx->grammar) {
delete ctx;
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