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Forward decl minja::chat_template to avoid eager json dep

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This commit is contained in:
ochafik 2025-01-18 10:37:56 +00:00
parent ee1e10e21e
commit e63520f37a
5 changed files with 40 additions and 21 deletions
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20
common/common.cpp
View File

@ -12,6 +12,7 @@
#include "json.hpp"
#include "json-schema-to-grammar.h"
#include "llama.h"
#include "chat-template.hpp"
#include <algorithm>
#include <cinttypes>
@ -1827,11 +1828,18 @@ llama_chat_templates llama_chat_templates_from_model(const struct llama_model *
auto eos_token = common_token_to_piece(vocab, llama_vocab_eos(vocab), true);
std::string default_template_src = chat_template_override;
std::string tool_use_template_src = chat_template_override;
bool has_explicit_template = !chat_template_override.empty();
if (chat_template_override.empty()) {
auto str = llama_model_chat_template(model, /* name */ nullptr);
if (str) default_template_src = str;
if (str) {
default_template_src = str;
has_explicit_template = true;
}
str = llama_model_chat_template(model, /* name */ "tool_use");
if (str) tool_use_template_src = str;
if (str) {
tool_use_template_src = str;
has_explicit_template = true;
}
}
if (default_template_src.empty() || default_template_src == "chatml") {
if (!tool_use_template_src.empty()) {
@ -1848,9 +1856,11 @@ llama_chat_templates llama_chat_templates_from_model(const struct llama_model *
}
}
return {
/* .default_template = */ { default_template_src, bos_token, eos_token },
/* .tool_use_template = */ tool_use_template_src.empty() ? std::nullopt
: std::optional<minja::chat_template>({ tool_use_template_src, bos_token, eos_token }),
has_explicit_template,
std::move(std::make_unique<minja::chat_template>(default_template_src, bos_token, eos_token)),
tool_use_template_src.empty()
? nullptr
: std::move(std::make_unique<minja::chat_template>(tool_use_template_src, bos_token, eos_token))
};
}

16
common/common.h
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@ -3,7 +3,6 @@
#pragma once
#include "llama-cpp.h"
#include "chat-template.hpp"
#include <optional>
#include <string>
@ -601,8 +600,18 @@ struct common_chat_msg {
// Check if the template supplied via "--chat-template" is supported or not. Returns true if it's valid
bool common_chat_verify_template(const std::string & tmpl, bool use_jinja);
namespace minja {
class chat_template;
}
typedef minja::chat_template llama_chat_template;
struct llama_chat_templates {
bool has_explicit_template; // Model had builtin template or template overridde was specified.
std::unique_ptr<llama_chat_template> default_template; // always set (defaults to chatml)
std::unique_ptr<llama_chat_template> tool_use_template;
};
// CPP wrapper for llama_chat_apply_template
// If the built-in template is not supported, we default to chatml
// If the custom "tmpl" is not supported, we throw an error
@ -624,11 +633,6 @@ std::string common_chat_format_single(
std::string common_chat_format_example(
const llama_chat_template & tmpl, bool use_jinja);
struct llama_chat_templates {
llama_chat_template default_template;
std::optional<llama_chat_template> tool_use_template;
};
llama_chat_templates llama_chat_templates_from_model(const struct llama_model * model, const std::string & chat_template_override);
//

7
examples/main/main.cpp
View File

@ -4,6 +4,7 @@
#include "log.h"
#include "sampling.h"
#include "llama.h"
#include "chat-template.hpp"
#include <cstdio>
#include <cstring>
@ -200,7 +201,7 @@ int main(int argc, char ** argv) {
}
// auto enable conversation mode if chat template is available
const bool has_chat_template = !chat_templates.default_template.source().empty();
const bool has_chat_template = chat_templates.has_explicit_template && chat_templates.default_template;
if (params.conversation_mode == COMMON_CONVERSATION_MODE_AUTO) {
if (has_chat_template) {
LOG_INF("%s: chat template is available, enabling conversation mode (disable it with -no-cnv)\n", __func__);
@ -218,7 +219,7 @@ int main(int argc, char ** argv) {
// print chat template example in conversation mode
if (params.conversation_mode) {
if (params.enable_chat_template) {
LOG_INF("%s: chat template example:\n%s\n", __func__, common_chat_format_example(chat_templates.default_template, params.use_jinja).c_str());
LOG_INF("%s: chat template example:\n%s\n", __func__, common_chat_format_example(*chat_templates.default_template, params.use_jinja).c_str());
} else {
LOG_INF("%s: in-suffix/prefix is specified, chat template will be disabled\n", __func__);
}
@ -264,7 +265,7 @@ int main(int argc, char ** argv) {
auto chat_add_and_format = [&chat_msgs, &chat_templates](const std::string & role, const std::string & content) {
common_chat_msg new_msg{role, content};
auto formatted = common_chat_format_single(chat_templates.default_template, chat_msgs, new_msg, role == "user", g_params->use_jinja);
auto formatted = common_chat_format_single(*chat_templates.default_template, chat_msgs, new_msg, role == "user", g_params->use_jinja);
chat_msgs.push_back({role, content});
LOG_DBG("formatted: '%s'\n", formatted.c_str());
return formatted;

6
examples/run/run.cpp
View File

@ -26,6 +26,7 @@
#include "common.h"
#include "json.hpp"
#include "llama-cpp.h"
#include "chat-template.hpp"
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(_WIN32)
[[noreturn]] static void sigint_handler(int) {
@ -936,6 +937,7 @@ static int chat_loop(LlamaData & llama_data, const std::string & user, bool use_
int prev_len = 0;
llama_data.fmtted.resize(llama_n_ctx(llama_data.context.get()));
auto chat_templates = llama_chat_templates_from_model(llama_data.model.get(), "");
GGML_ASSERT(chat_templates.default_template);
static const bool stdout_a_terminal = is_stdout_a_terminal();
while (true) {
// Get user input
@ -946,7 +948,7 @@ static int chat_loop(LlamaData & llama_data, const std::string & user, bool use_
add_message("user", user.empty() ? user_input : user, llama_data);
int new_len;
if (apply_chat_template_with_error_handling(chat_templates.default_template, llama_data, true, new_len, use_jinja) < 0) {
if (apply_chat_template_with_error_handling(*chat_templates.default_template, llama_data, true, new_len, use_jinja) < 0) {
return 1;
}
@ -961,7 +963,7 @@ static int chat_loop(LlamaData & llama_data, const std::string & user, bool use_
}
add_message("assistant", response, llama_data);
if (apply_chat_template_with_error_handling(chat_templates.default_template, llama_data, false, prev_len, use_jinja) < 0) {
if (apply_chat_template_with_error_handling(*chat_templates.default_template, llama_data, false, prev_len, use_jinja) < 0) {
return 1;
}
}

12
examples/server/server.cpp
View File

@ -1745,8 +1745,9 @@ struct server_context {
if (use_jinja) {
auto templates = llama_chat_templates_from_model(model, "");
GGML_ASSERT(templates.default_template);
try {
templates.default_template.apply({{
templates.default_template->apply({{
{"role", "user"},
{"content", "test"},
}}, json(), true);
@ -3630,6 +3631,7 @@ int main(int argc, char ** argv) {
std::lock_guard<std::mutex> lock(chat_templates_mutex);
if (!chat_templates) {
chat_templates = llama_chat_templates_from_model(ctx_server.model, ctx_server.params_base.chat_template);
GGML_ASSERT(chat_templates->default_template);
}
return *chat_templates;
};
@ -3641,7 +3643,7 @@ int main(int argc, char ** argv) {
{ "default_generation_settings", ctx_server.default_generation_settings_for_props },
{ "total_slots", ctx_server.params_base.n_parallel },
{ "model_path", ctx_server.params_base.model },
{ "chat_template", templates.default_template.source() },
{ "chat_template", templates.default_template->source() },
{ "build_info", build_info },
};
if (ctx_server.params_base.use_jinja && templates.tool_use_template) {
@ -3868,7 +3870,7 @@ int main(int argc, char ** argv) {
auto body = json::parse(req.body);
const auto & templates = get_chat_templates();
const auto & chat_template = body.contains("tools") && templates.tool_use_template ? *templates.tool_use_template : templates.default_template;
const auto & chat_template = body.contains("tools") && templates.tool_use_template ? *templates.tool_use_template : *templates.default_template;
json data = oaicompat_completion_params_parse(body, chat_template, params.use_jinja);
return handle_completions_impl(
@ -4287,8 +4289,8 @@ int main(int argc, char ** argv) {
// print sample chat example to make it clear which template is used
LOG_INF("%s: chat template, chat_template: %s, example_format: '%s'\n", __func__,
get_chat_templates().default_template.source().c_str(),
common_chat_format_example(get_chat_templates().default_template, ctx_server.params_base.use_jinja).c_str());
get_chat_templates().default_template->source().c_str(),
common_chat_format_example(*get_chat_templates().default_template, ctx_server.params_base.use_jinja).c_str());
ctx_server.queue_tasks.on_new_task(std::bind(
&server_context::process_single_task, &ctx_server, std::placeholders::_1));