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1 files changed, 1669 insertions, 0 deletions

diff --git a/llama.cpp/common/chat-parser.cpp b/llama.cpp/common/chat-parser.cpp
new file mode 100644
index 0000000..29819e4
--- /dev/null
+++ b/llama.cpp/common/chat-parser.cpp
@@ -0,0 +1,1669 @@
+#include "chat-parser.h"
+#include "chat-peg-parser.h"
+#include "common.h"
+#include "log.h"
+#include "peg-parser.h"
+#include "regex-partial.h"
+
+#include <algorithm>
+#include <cctype>
+#include <optional>
+#include <stdexcept>
+#include <string>
+#include <string_view>
+#include <vector>
+
+using json = nlohmann::ordered_json;
+
+static void parse_prefixed_json_tool_call_array(common_chat_msg_parser & builder,
+                                                const common_regex &     prefix,
+                                                size_t                   rstrip_prefix = 0) {
+    static const std::vector<std::vector<std::string>> args_paths = { { "arguments" } };
+    if (auto res = builder.try_find_regex(prefix)) {
+        builder.move_back(rstrip_prefix);
+        auto tool_calls = builder.consume_json_with_dumped_args(args_paths);
+        if (!builder.add_tool_calls(tool_calls.value) || tool_calls.is_partial) {
+            throw common_chat_msg_partial_exception("incomplete tool call array");
+        }
+    } else {
+        builder.add_content(builder.consume_rest());
+    }
+}
+
+static std::string wrap_code_as_arguments(common_chat_msg_parser & builder, const std::string & code) {
+    std::string arguments;
+    if (builder.is_partial()) {
+        arguments = (json{
+                         { "code", code + builder.healing_marker() }
+        })
+                        .dump();
+        auto idx = arguments.find(builder.healing_marker());
+        if (idx != std::string::npos) {
+            arguments.resize(idx);
+        }
+    } else {
+        arguments = (json{
+                         { "code", code }
+        })
+                        .dump();
+    }
+    return arguments;
+}
+
+/**
+ * Takes a prefix regex that must have 1 group to capture the function name, a closing suffix, and expects json parameters in between.
+ * Aggregates the prefix, suffix and in-between text into the content.
+ */
+static void parse_json_tool_calls(
+    common_chat_msg_parser &            builder,
+    const std::optional<common_regex> & block_open,
+    const std::optional<common_regex> & function_regex_start_only,
+    const std::optional<common_regex> & function_regex,
+    const common_regex &                close_regex,
+    const std::optional<common_regex> & block_close,
+    bool                                allow_raw_python = false,
+    const std::function<std::string(const common_chat_msg_parser::find_regex_result & fres)> & get_function_name =
+        nullptr) {
+    auto parse_tool_calls = [&]() {
+        size_t from  = std::string::npos;
+        auto   first = true;
+        while (true) {
+            auto start_pos = builder.pos();
+            auto res = function_regex_start_only && first ? builder.try_consume_regex(*function_regex_start_only) :
+                       function_regex                     ? builder.try_find_regex(*function_regex, from) :
+                                                            std::nullopt;
+
+            if (res) {
+                std::string name;
+                if (get_function_name) {
+                    name = get_function_name(*res);
+                } else {
+                    GGML_ASSERT(res->groups.size() == 2);
+                    name = builder.str(res->groups[1]);
+                }
+                first = false;
+                if (name.empty()) {
+                    // get_function_name signalled us that we should skip this match and treat it as content.
+                    from = res->groups[0].begin + 1;
+                    continue;
+                }
+                from = std::string::npos;
+
+                auto maybe_raw_python = name == "python" && allow_raw_python;
+                if (builder.input()[builder.pos()] == '{' || !maybe_raw_python) {
+                    if (auto arguments = builder.try_consume_json_with_dumped_args({ {} })) {
+                        if (!builder.add_tool_call(name, "", arguments->value) || arguments->is_partial) {
+                            throw common_chat_msg_partial_exception("incomplete tool call");
+                        }
+                        builder.consume_regex(close_regex);
+                    }
+                    continue;
+                }
+                if (maybe_raw_python) {
+                    auto arguments = wrap_code_as_arguments(builder, builder.consume_rest());
+                    if (!builder.add_tool_call(name, "", arguments)) {
+                        throw common_chat_msg_partial_exception("incomplete tool call");
+                    }
+                    return;
+                }
+                throw common_chat_msg_partial_exception("incomplete tool call");
+            } else {
+                builder.move_to(start_pos);
+            }
+            break;
+        }
+        if (block_close) {
+            builder.consume_regex(*block_close);
+        }
+        builder.consume_spaces();
+        builder.add_content(builder.consume_rest());
+    };
+    if (block_open) {
+        if (auto res = builder.try_find_regex(*block_open)) {
+            parse_tool_calls();
+        } else {
+            builder.add_content(builder.consume_rest());
+        }
+    } else {
+        parse_tool_calls();
+    }
+}
+
+common_chat_msg_parser::common_chat_msg_parser(const std::string & input, bool is_partial, const common_chat_parser_params & syntax)
+    : input_(input), is_partial_(is_partial), syntax_(syntax)
+{
+    result_.role = "assistant";
+
+    while (true) {
+        std::string id = std::to_string(std::rand());
+        if (input.find(id) == std::string::npos) {
+            healing_marker_ = id;
+            break;
+        }
+    }
+}
+
+std::string common_chat_msg_parser::str(const common_string_range & rng) const {
+    GGML_ASSERT(rng.begin <= rng.end);
+    return input_.substr(rng.begin, rng.end - rng.begin);
+}
+
+void common_chat_msg_parser::add_content(const std::string &content) {
+    result_.content += content;
+}
+
+void common_chat_msg_parser::add_reasoning_content(const std::string &reasoning_content) {
+    result_.reasoning_content += reasoning_content;
+}
+
+bool common_chat_msg_parser::add_tool_call(const std::string & name, const std::string & id, const std::string & arguments) {
+    if (name.empty()) {
+        return false;
+    }
+
+    common_chat_tool_call tool_call;
+    tool_call.name = name;
+    tool_call.arguments = arguments;
+    tool_call.id = id;
+
+    // LOG_DBG("Tool call arguments:\n\traw: %s\n\tresult: %s\n", arguments.c_str(), tool_call.arguments.c_str());
+    result_.tool_calls.emplace_back(tool_call);
+
+    return true;
+}
+bool common_chat_msg_parser::add_tool_call(const json & tool_call) {
+    std::string name = tool_call.contains("name") ? tool_call.at("name") : "";
+    std::string id = tool_call.contains("id") ? tool_call.at("id") : "";
+    std::string arguments = "";
+    if (tool_call.contains("arguments")) {
+        if (tool_call.at("arguments").is_object()) {
+            arguments = tool_call.at("arguments").dump();
+        } else {
+            arguments = tool_call.at("arguments");
+        }
+    }
+
+    return add_tool_call(name, id, arguments);
+}
+
+bool common_chat_msg_parser::add_tool_calls(const json & arr) {
+    for (const auto & item : arr) {
+        if (!add_tool_call(item)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool common_chat_msg_parser::add_tool_call_short_form(const json & tool_call) {
+    if (!tool_call.is_object() || tool_call.size() != 1) {
+        return false;
+    }
+
+    // Get the tool name (the single key in the object)
+    auto it = tool_call.begin();
+    std::string name = it.key();
+
+    if (name.empty()) {
+        return false;
+    }
+
+    // Get the arguments (the nested object)
+    const json & args_json = it.value();
+    std::string arguments = "";
+
+    if (args_json.is_object()) {
+        arguments = args_json.dump();
+    } else if (args_json.is_string()) {
+        arguments = args_json;
+    } else if (!args_json.is_null()) {
+        // For other types, convert to string representation
+        arguments = args_json.dump();
+    }
+
+    return add_tool_call(name, "", arguments);
+}
+void common_chat_msg_parser::finish() {
+    if (!is_partial_ && pos_ != input_.size()) {
+        throw std::runtime_error("Unexpected content at end of input");// + input_.substr(pos_));
+    }
+}
+
+bool common_chat_msg_parser::consume_spaces() {
+    const auto length = input_.size();
+    auto consumed = false;
+    while (pos_ < length && std::isspace(input_[pos_])) {
+        ++pos_;
+        consumed = true;
+    }
+    return consumed;
+}
+
+bool common_chat_msg_parser::try_consume_literal(const std::string & literal) {
+    auto pos = pos_;
+    for (auto i = 0u; i < literal.size(); ++i) {
+        if (pos >= input_.size()) {
+            return false;
+        }
+        if (input_[pos] != literal[i]) {
+            return false;
+        }
+        ++pos;
+    }
+    pos_ = pos;
+    return true;
+}
+
+std::optional<common_chat_msg_parser::find_regex_result>  common_chat_msg_parser::try_find_literal(const std::string & literal) {
+    auto idx = input_.find(literal, pos_);
+    if (idx != std::string::npos) {
+        find_regex_result res;
+        res.prelude = input_.substr(pos_, idx - pos_);
+        auto end = idx + literal.size();
+        res.groups.emplace_back(common_string_range{idx, end});
+        move_to(end);
+        return res;
+    }
+    if (is_partial_) {
+        idx = string_find_partial_stop(input_, literal);
+        if (idx != std::string::npos && idx >= pos_) {
+            find_regex_result res;
+            res.prelude = input_.substr(pos_, idx - pos_);
+            auto end = input_.size();
+            res.groups.emplace_back(common_string_range{idx, end});
+            move_to(end);
+            return res;
+        }
+    }
+    return std::nullopt;
+}
+
+void common_chat_msg_parser::consume_literal(const std::string & literal) {
+    if (!try_consume_literal(literal)) {
+        throw common_chat_msg_partial_exception(literal);
+    }
+}
+
+bool common_chat_msg_parser::try_parse_reasoning(const std::string & start_think, const std::string & end_think) {
+    std::string pending_reasoning_prefix;
+
+    if (syntax_.reasoning_format == COMMON_REASONING_FORMAT_NONE) {
+        return false;
+    }
+
+    auto set_reasoning_prefix = [&](size_t prefix_pos) {
+        if (!syntax_.thinking_forced_open || syntax_.reasoning_in_content) {
+            return;
+        }
+        if (prefix_pos + start_think.size() > input_.size()) {
+            pending_reasoning_prefix.clear();
+            return;
+        }
+        // Capture the exact literal that opened the reasoning section so we can
+        // surface it back to callers. This ensures formats that force the
+        // reasoning tag open (e.g. DeepSeek R1) retain their original prefix
+        // instead of dropping it during parsing.
+        pending_reasoning_prefix = input_.substr(prefix_pos, start_think.size());
+    };
+
+    auto handle_reasoning = [&](const std::string & reasoning, bool closed) {
+        auto stripped_reasoning = string_strip(reasoning);
+        if (stripped_reasoning.empty()) {
+            return;
+        }
+        if (syntax_.reasoning_in_content) {
+            add_content(syntax_.reasoning_format == COMMON_REASONING_FORMAT_DEEPSEEK ? "<think>" : start_think);
+            add_content(stripped_reasoning);
+            if (closed) {
+                add_content(syntax_.reasoning_format == COMMON_REASONING_FORMAT_DEEPSEEK ? "</think>" : end_think);
+            }
+        } else {
+            if (!pending_reasoning_prefix.empty()) {
+                add_reasoning_content(pending_reasoning_prefix);
+                pending_reasoning_prefix.clear();
+            }
+            add_reasoning_content(stripped_reasoning);
+        }
+    };
+
+    const size_t saved_pos = pos_;
+    const size_t saved_content_size = result_.content.size();
+    const size_t saved_reasoning_size = result_.reasoning_content.size();
+
+    auto restore_state = [&]() {
+        move_to(saved_pos);
+        result_.content.resize(saved_content_size);
+        result_.reasoning_content.resize(saved_reasoning_size);
+    };
+
+    // Allow leading whitespace to be preserved as content when reasoning is present at the start
+    size_t cursor = pos_;
+    size_t whitespace_end = cursor;
+    while (whitespace_end < input_.size() && std::isspace(static_cast<unsigned char>(input_[whitespace_end]))) {
+        ++whitespace_end;
+    }
+
+    if (whitespace_end >= input_.size()) {
+        restore_state();
+        if (syntax_.thinking_forced_open) {
+            auto rest = input_.substr(saved_pos);
+            if (!rest.empty()) {
+                handle_reasoning(rest, /* closed */ !is_partial());
+            }
+            move_to(input_.size());
+            return true;
+        }
+        return false;
+    }
+
+    cursor = whitespace_end;
+    const size_t remaining = input_.size() - cursor;
+    const size_t start_prefix = std::min(start_think.size(), remaining);
+    const bool has_start_tag = input_.compare(cursor, start_prefix, start_think, 0, start_prefix) == 0;
+
+    if (has_start_tag && start_prefix < start_think.size()) {
+        move_to(input_.size());
+        return true;
+    }
+
+    if (has_start_tag) {
+        if (whitespace_end > pos_) {
+            add_content(input_.substr(pos_, whitespace_end - pos_));
+        }
+        set_reasoning_prefix(cursor);
+        cursor += start_think.size();
+    } else if (syntax_.thinking_forced_open) {
+        cursor = whitespace_end;
+    } else {
+        restore_state();
+        return false;
+    }
+    while (true) {
+        if (cursor >= input_.size()) {
+            move_to(input_.size());
+            return true;
+        }
+
+        size_t end_pos = input_.find(end_think, cursor);
+        if (end_pos == std::string::npos) {
+            std::string_view remaining_view(input_.data() + cursor, input_.size() - cursor);
+            size_t partial_off = string_find_partial_stop(remaining_view, end_think);
+            size_t reasoning_end = partial_off == std::string::npos ? input_.size() : cursor + partial_off;
+            if (reasoning_end > cursor) {
+                handle_reasoning(input_.substr(cursor, reasoning_end - cursor), /* closed */ partial_off == std::string::npos && !is_partial());
+            }
+            move_to(input_.size());
+            return true;
+        }
+
+        if (end_pos > cursor) {
+            handle_reasoning(input_.substr(cursor, end_pos - cursor), /* closed */ true);
+        } else {
+            handle_reasoning("", /* closed */ true);
+        }
+
+        cursor = end_pos + end_think.size();
+
+        while (cursor < input_.size() && std::isspace(static_cast<unsigned char>(input_[cursor]))) {
+            ++cursor;
+        }
+
+        const size_t next_remaining = input_.size() - cursor;
+        if (next_remaining == 0) {
+            move_to(cursor);
+            return true;
+        }
+
+        const size_t next_prefix = std::min(start_think.size(), next_remaining);
+        if (input_.compare(cursor, next_prefix, start_think, 0, next_prefix) == 0) {
+            if (next_prefix < start_think.size()) {
+                move_to(input_.size());
+                return true;
+            }
+            set_reasoning_prefix(cursor);
+            cursor += start_think.size();
+            continue;
+        }
+
+        move_to(cursor);
+        return true;
+    }
+}
+
+std::string common_chat_msg_parser::consume_rest() {
+    auto rest = input_.substr(pos_);
+    pos_ = input_.size();
+    return rest;
+}
+
+// Tries to find the regex, consumes it (pos right after it) and gives the prelude (right before it) and the groups to the callback.
+std::optional<common_chat_msg_parser::find_regex_result> common_chat_msg_parser::try_find_regex(const common_regex & regex, size_t from, bool add_prelude_to_content) {
+    auto m = regex.search(input_, from == std::string::npos ? pos_ : from);
+    if (m.type == COMMON_REGEX_MATCH_TYPE_NONE) {
+        return std::nullopt;
+    }
+    auto prelude = input_.substr(pos_, m.groups[0].begin - pos_);
+    pos_ = m.groups[0].end;
+
+    if (add_prelude_to_content) {
+        add_content(prelude);
+    }
+    if (m.type == COMMON_REGEX_MATCH_TYPE_PARTIAL) {
+        if (is_partial()) {
+            throw common_chat_msg_partial_exception(regex.str());
+        }
+        return std::nullopt;
+    }
+    return find_regex_result{prelude, m.groups};
+}
+
+common_chat_msg_parser::find_regex_result common_chat_msg_parser::consume_regex(const common_regex & regex) {
+    if (auto result = try_consume_regex(regex)) {
+        return *result;
+    }
+    throw common_chat_msg_partial_exception(regex.str());
+}
+
+std::optional<common_chat_msg_parser::find_regex_result> common_chat_msg_parser::try_consume_regex(const common_regex & regex) {
+    auto m = regex.search(input_, pos_);
+    if (m.type == COMMON_REGEX_MATCH_TYPE_NONE) {
+        return std::nullopt;
+    }
+    if (m.type == COMMON_REGEX_MATCH_TYPE_PARTIAL) {
+        if (is_partial()) {
+            throw common_chat_msg_partial_exception(regex.str());
+        }
+        return std::nullopt;
+    }
+    if (m.groups[0].begin != pos_) {
+        // Didn't match at the current position.
+        return std::nullopt;
+    }
+    pos_ = m.groups[0].end;
+
+    return find_regex_result {
+        /* .prelude = */ "",
+        m.groups,
+    };
+}
+
+std::optional<common_json> common_chat_msg_parser::try_consume_json() {
+    auto it = input_.cbegin() + pos_;
+    const auto end = input_.cend();
+    common_json result;
+    if (!common_json_parse(it, end, healing_marker_, result)) {
+        return std::nullopt;
+    }
+    pos_ = std::distance(input_.cbegin(), it);
+    if (result.healing_marker.marker.empty()) {
+        // No healing marker, just return the parsed json
+        return result;
+    }
+    if (!is_partial()) {
+        throw common_chat_msg_partial_exception("JSON");
+    }
+    return result;
+}
+
+common_json common_chat_msg_parser::consume_json() {
+    if (auto result = try_consume_json()) {
+        return *result;
+    }
+    throw common_chat_msg_partial_exception("JSON");
+}
+
+common_chat_msg_parser::consume_json_result common_chat_msg_parser::consume_json_with_dumped_args(
+    const std::vector<std::vector<std::string>> & args_paths,
+    const std::vector<std::vector<std::string>> & content_paths
+) {
+    if (auto result = try_consume_json_with_dumped_args(args_paths, content_paths)) {
+        return *result;
+    }
+    throw common_chat_msg_partial_exception("JSON");
+}
+
+std::optional<common_chat_msg_parser::consume_json_result> common_chat_msg_parser::try_consume_json_with_dumped_args(
+    const std::vector<std::vector<std::string>> & args_paths,
+    const std::vector<std::vector<std::string>> & content_paths
+) {
+    auto partial = try_consume_json();
+    if (!partial) {
+        return std::nullopt;
+    }
+    auto is_arguments_path = [&](const std::vector<std::string> & path) {
+        return std::find(args_paths.begin(), args_paths.end(), path) != args_paths.end();
+    };
+    auto is_content_path = [&](const std::vector<std::string> & path) {
+        return std::find(content_paths.begin(), content_paths.end(), path) != content_paths.end();
+    };
+
+    if (partial->healing_marker.marker.empty()) {
+        if (args_paths.empty()) {
+            // No arguments to dump, and JSON was parsed fully.
+            return consume_json_result {
+                partial->json,
+                /* .is_partial = */ false,
+            };
+        }
+        if (is_arguments_path({})) {
+            // Entire JSON is the arguments and was parsed fully.
+            return consume_json_result {
+                partial->json.dump(/* indent */ -1, /* indent_char */ ' ', /* ensure_ascii */ true),
+                /* .is_partial = */ false,
+            };
+        }
+    }
+
+    LOG_DBG("Parsed partial JSON: %s (json_healing_marker: %s)\n", partial->json.dump().c_str(), partial->healing_marker.json_dump_marker.c_str());
+
+    auto found_healing_marker = false;
+    std::vector<std::string> path;
+    std::function<json(const json &)> remove_unsupported_healings_and_dump_args = [&](const json & j) -> json {
+        if (is_arguments_path(path)) {
+            auto arguments = j.dump(/* indent */ -1, /* indent_char */ ' ', /* ensure_ascii */ true);
+            if (is_partial() && !partial->healing_marker.marker.empty()) {
+                auto idx = arguments.find(partial->healing_marker.json_dump_marker);
+                if (idx != std::string::npos) {
+                    arguments.resize(idx);
+                    found_healing_marker = true;
+                }
+                if (arguments == "\"") {
+                    // This happens because of completing `:"$magic` after `"arguments"`
+                    arguments = "";
+                }
+            }
+            return arguments;
+        }
+        if (is_content_path(path)) {
+            if (!j.is_string()) {
+                throw std::runtime_error("Content path must be a string");
+            }
+            std::string str = j;
+            auto idx = str.find(partial->healing_marker.marker); // not using json_dump_marker as we're inside a string
+            if (idx != std::string::npos) {
+                str.resize(idx);
+                found_healing_marker = true;
+            }
+            return str;
+        }
+        if (j.is_object()) {
+            auto obj = json::object();
+            for (const auto & p : j.items()) {
+                const auto & key = p.key();
+                const auto & value = p.value();
+                const std::string key_str = key; // NOLINT
+                auto idx = key_str.find(healing_marker_);
+                if (idx != std::string::npos) {
+                    found_healing_marker = true;
+                    break;
+                }
+                path.push_back(key_str);
+                if (value.is_string()) {
+                    const std::string value_str = value;
+                    if (value_str.find(healing_marker_) != std::string::npos) {
+                        found_healing_marker = true;
+                        if (is_content_path(path)) {
+                            if (partial->healing_marker.marker == partial->healing_marker.json_dump_marker) {
+                                // The healing occurred inside the string: good. Otherwise we just ditch the entire key/value pair.
+                                obj[key] = remove_unsupported_healings_and_dump_args(value);
+                            }
+                        }
+                        break;
+                    }
+                    obj[key] = value;
+                } else {
+                    obj[key] = remove_unsupported_healings_and_dump_args(value);
+                }
+                path.pop_back();
+            }
+            return obj;
+        }
+        if (j.is_array()) {
+            auto arr = json::array();
+            for (const auto & value : j) {
+                if (value.is_string()) {
+                    std::string str = value;
+                    auto idx = str.find(healing_marker_);
+                    if (idx != std::string::npos) {
+                        // Don't heal array values that aren't in the arguments.
+                        found_healing_marker = true;
+                        break;
+                    }
+                }
+                arr.push_back(remove_unsupported_healings_and_dump_args(value));
+            }
+            return arr;
+        }
+        return j;
+    };
+
+    auto cleaned = remove_unsupported_healings_and_dump_args(partial->json);
+    LOG_DBG("Cleaned up JSON %s to %s (json_healing_marker : '%s')\n", partial->json.dump().c_str(), cleaned.dump().c_str(), partial->healing_marker.json_dump_marker.c_str());
+    return consume_json_result {
+        cleaned,
+        /* .is_partial = */ found_healing_marker,
+    };
+}
+
+void common_chat_msg_parser::clear_tools() {
+    result_.tool_calls.clear();
+}
+
+/**
+ * All common_chat_parse_* moved from chat.cpp to chat-parser.cpp below
+ * to reduce incremental compile time for parser changes.
+ */
+static void common_chat_parse_generic(common_chat_msg_parser & builder) {
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+    static const std::vector<std::vector<std::string>> content_paths = {
+        {"response"},
+    };
+    static const std::vector<std::vector<std::string>> args_paths = {
+        {"tool_call", "arguments"},
+        {"tool_calls", "arguments"},
+    };
+    auto data = builder.consume_json_with_dumped_args(args_paths, content_paths);
+    if (data.value.contains("tool_calls")) {
+        if (!builder.add_tool_calls(data.value.at("tool_calls")) || data.is_partial) {
+            throw common_chat_msg_partial_exception("incomplete tool calls");
+        }
+    } else if (data.value.contains("tool_call")) {
+        if (!builder.add_tool_call(data.value.at("tool_call")) || data.is_partial) {
+            throw common_chat_msg_partial_exception("incomplete tool call");
+        }
+    } else if (data.value.contains("response")) {
+        const auto & response = data.value.at("response");
+        builder.add_content(response.is_string() ? response.template get<std::string>() : response.dump(2));
+        if (data.is_partial) {
+            throw common_chat_msg_partial_exception("incomplete response");
+        }
+    } else {
+        throw common_chat_msg_partial_exception("Expected 'tool_call', 'tool_calls' or 'response' in JSON");
+    }
+}
+
+static void common_chat_parse_mistral_nemo(common_chat_msg_parser & builder) {
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    static const common_regex prefix(regex_escape("[TOOL_CALLS]"));
+    parse_prefixed_json_tool_call_array(builder, prefix);
+}
+
+static void common_chat_parse_magistral(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("[THINK]", "[/THINK]");
+
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    static const common_regex prefix(regex_escape("[TOOL_CALLS]"));
+    parse_prefixed_json_tool_call_array(builder, prefix);
+}
+
+static void common_chat_parse_command_r7b(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("<|START_THINKING|>", "<|END_THINKING|>");
+
+    static const common_regex start_action_regex("<\\|START_ACTION\\|>");
+    static const common_regex end_action_regex("<\\|END_ACTION\\|>");
+    static const common_regex start_response_regex("<\\|START_RESPONSE\\|>");
+    static const common_regex end_response_regex("<\\|END_RESPONSE\\|>");
+
+    if (auto res = builder.try_find_regex(start_action_regex)) {
+        // If we didn't extract thoughts, prelude includes them.
+        auto tool_calls = builder.consume_json_with_dumped_args({{"parameters"}});
+        for (const auto & tool_call : tool_calls.value) {
+            std::string name = tool_call.contains("tool_name") ? tool_call.at("tool_name") : "";
+            std::string id = tool_call.contains("tool_call_id") ? tool_call.at("tool_call_id") : "";
+            std::string arguments = tool_call.contains("parameters") ? tool_call.at("parameters") : "";
+            if (!builder.add_tool_call(name, id, arguments) || tool_calls.is_partial) {
+                throw common_chat_msg_partial_exception("incomplete tool call");
+            }
+        }
+        if (tool_calls.is_partial) {
+            throw common_chat_msg_partial_exception("incomplete tool call");
+        }
+        builder.consume_regex(end_action_regex);
+    } else if (auto res = builder.try_find_regex(start_response_regex)) {
+        if (!builder.try_find_regex(end_response_regex)) {
+            builder.add_content(builder.consume_rest());
+            throw common_chat_msg_partial_exception(end_response_regex.str());
+        }
+    } else {
+        builder.add_content(builder.consume_rest());
+    }
+}
+
+static void common_chat_parse_llama_3_1(common_chat_msg_parser & builder, bool with_builtin_tools = false) {
+    builder.try_parse_reasoning("<think>", "</think>");
+
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    static const common_regex function_regex(
+        "\\s*\\{\\s*(?:\"type\"\\s*:\\s*\"function\"\\s*,\\s*)?\"name\"\\s*:\\s*\"([^\"]+)\"\\s*,\\s*\"parameters\"\\s*: ");
+    static const common_regex close_regex("\\}\\s*");
+
+    static const common_regex function_name_regex("\\s*(\\w+)\\s*\\.\\s*call\\(");
+    static const common_regex arg_name_regex("\\s*(\\w+)\\s*=\\s*");
+
+    if (with_builtin_tools) {
+        static const common_regex builtin_call_regex("<\\|python_tag\\|>");
+        if (auto res = builder.try_find_regex(builtin_call_regex)) {
+            auto fun_res = builder.consume_regex(function_name_regex);
+            auto function_name = builder.str(fun_res.groups[1]);
+
+            common_healing_marker healing_marker;
+            json args = json::object();
+            while (true) {
+                if (auto arg_res = builder.try_consume_regex(arg_name_regex)) {
+                    auto arg_name = builder.str(arg_res->groups[1]);
+                    auto partial = builder.consume_json();
+                    args[arg_name] = partial.json;
+                    healing_marker.marker = partial.healing_marker.marker;
+                    healing_marker.json_dump_marker = partial.healing_marker.json_dump_marker;
+                    builder.consume_spaces();
+                    if (!builder.try_consume_literal(",")) {
+                        break;
+                    }
+                } else {
+                    break;
+                }
+            }
+            builder.consume_literal(")");
+            builder.consume_spaces();
+
+            auto arguments = args.dump();
+            if (!builder.add_tool_call(function_name, "", arguments)) {
+                throw common_chat_msg_partial_exception("Incomplete tool call");
+            }
+            return;
+        }
+    }
+    parse_json_tool_calls(
+        builder,
+        /* block_open= */ std::nullopt,
+        /* function_regex_start_only= */ function_regex,
+        /* function_regex= */ std::nullopt,
+        close_regex,
+        std::nullopt);
+
+}
+
+static void common_chat_parse_deepseek_r1(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("<think>", "</think>");
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    static const common_regex tool_calls_begin("(?:<｜tool▁calls▁begin｜>|<｜tool_calls_begin｜>|<｜tool calls begin｜>|<｜tool\\\\_calls\\\\_begin｜>|<｜tool▁calls｜>)");
+    static const common_regex tool_calls_end("<｜tool▁calls▁end｜>");
+    static const common_regex function_regex("(?:<｜tool▁call▁begin｜>)?function<｜tool▁sep｜>([^\n]+)\n```json\n");
+    static const common_regex close_regex("```[\\s\\r\\n]*<｜tool▁call▁end｜>");
+
+    parse_json_tool_calls(
+        builder,
+        /* block_open= */ tool_calls_begin,
+        /* function_regex_start_only= */ std::nullopt,
+        function_regex,
+        close_regex,
+        tool_calls_end);
+}
+
+static void common_chat_parse_deepseek_v3_1_content(common_chat_msg_parser & builder) {
+    static const common_regex function_regex("(?:<｜tool▁call▁begin｜>)?([^\\n<]+)(?:<｜tool▁sep｜>)");
+
+    static const common_regex close_regex("(?:[\\s]*)?<｜tool▁call▁end｜>");
+    static const common_regex tool_calls_begin("(?:<｜tool▁calls▁begin｜>|<｜tool_calls_begin｜>|<｜tool calls begin｜>|<｜tool\\\\_calls\\\\_begin｜>|<｜tool▁calls｜>)");
+    static const common_regex tool_calls_end("<｜tool▁calls▁end｜>");
+
+    if (!builder.syntax().parse_tool_calls) {
+        LOG_DBG("%s: not parse_tool_calls\n", __func__);
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    LOG_DBG("%s: parse_tool_calls\n", __func__);
+
+    parse_json_tool_calls(
+        builder,
+        /* block_open= */ tool_calls_begin,
+        /* function_regex_start_only= */ std::nullopt,
+        function_regex,
+        close_regex,
+        tool_calls_end);
+}
+
+static void common_chat_parse_deepseek_v3_1(common_chat_msg_parser & builder) {
+    // DeepSeek V3.1 outputs reasoning content between "<think>" and "</think>" tags, followed by regular content
+    // First try to parse using the standard reasoning parsing method
+    LOG_DBG("%s: thinking_forced_open: %s\n", __func__, std::to_string(builder.syntax().thinking_forced_open).c_str());
+
+    auto start_pos = builder.pos();
+    auto found_end_think = builder.try_find_literal("</think>");
+    builder.move_to(start_pos);
+
+    if (builder.syntax().thinking_forced_open && !builder.is_partial() && !found_end_think) {
+        LOG_DBG("%s: no end_think, not partial, adding content\n", __func__);
+        common_chat_parse_deepseek_v3_1_content(builder);
+    } else if (builder.try_parse_reasoning("<think>", "</think>")) {
+        // If reasoning was parsed successfully, the remaining content is regular content
+        LOG_DBG("%s: parsed reasoning, adding content\n", __func__);
+        // </think><｜tool▁calls▁begin｜><｜tool▁call▁begin｜>function<｜tool▁sep｜>NAME\n```json\nJSON\n```<｜tool▁call▁end｜><｜tool▁calls▁end｜>
+        common_chat_parse_deepseek_v3_1_content(builder);
+    } else {
+        if (builder.syntax().reasoning_format == COMMON_REASONING_FORMAT_NONE) {
+          LOG_DBG("%s: reasoning_format none, adding content\n", __func__);
+          common_chat_parse_deepseek_v3_1_content(builder);
+          return;
+        }
+        // If no reasoning tags found, check if we should treat everything as reasoning
+        if (builder.syntax().thinking_forced_open) {
+            // If thinking is forced open but no tags found, treat everything as reasoning
+            LOG_DBG("%s: thinking_forced_open, adding reasoning content\n", __func__);
+            builder.add_reasoning_content(builder.consume_rest());
+        } else {
+            LOG_DBG("%s: no thinking_forced_open, adding content\n", __func__);
+            // <｜tool▁call▁begin｜>NAME<｜tool▁sep｜>JSON<｜tool▁call▁end｜>
+            common_chat_parse_deepseek_v3_1_content(builder);
+        }
+    }
+}
+
+static void common_chat_parse_minimax_m2(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form {
+        /* form.scope_start = */ "<minimax:tool_call>",
+        /* form.tool_start  = */ "<invoke name=\"",
+        /* form.tool_sep    = */ "\">",
+        /* form.key_start   = */ "<parameter name=\"",
+        /* form.key_val_sep = */ "\">",
+        /* form.val_end     = */ "</parameter>",
+        /* form.tool_end    = */ "</invoke>",
+        /* form.scope_end   = */ "</minimax:tool_call>",
+    };
+    builder.consume_reasoning_with_xml_tool_calls(form, "<think>", "</think>");
+}
+
+static void common_chat_parse_qwen3_coder_xml(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form = ([]() {
+        xml_tool_call_format form {};
+        form.scope_start = "<tool_call>";
+        form.tool_start  = "<function=";
+        form.tool_sep    = ">";
+        form.key_start   = "<parameter=";
+        form.key_val_sep = ">";
+        form.val_end     = "</parameter>";
+        form.tool_end    = "</function>";
+        form.scope_end   = "</tool_call>";
+        form.trim_raw_argval = true;
+        return form;
+    })();
+    builder.consume_reasoning_with_xml_tool_calls(form);
+}
+
+static void common_chat_parse_kimi_k2(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form = ([]() {
+        xml_tool_call_format form {};
+        form.scope_start = "<|tool_calls_section_begin|>";
+        form.tool_start  = "<|tool_call_begin|>";
+        form.tool_sep    = "<|tool_call_argument_begin|>{";
+        form.key_start   = "\"";
+        form.key_val_sep = "\":";
+        form.val_end     = ",";
+        form.tool_end    = "}<|tool_call_end|>";
+        form.scope_end   = "<|tool_calls_section_end|>";
+        form.raw_argval  = false;
+        form.last_val_end = "";
+        form.allow_toolcall_in_think = true;
+        return form;
+    })();
+    builder.consume_reasoning_with_xml_tool_calls(form, "<think>", "</think>");
+}
+
+static void common_chat_parse_apriel_1_5(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form = ([]() {
+        xml_tool_call_format form {};
+        form.scope_start = "<tool_calls>[";
+        form.tool_start  = "{\"name\": \"";
+        form.tool_sep    = "\", \"arguments\": {";
+        form.key_start   = "\"";
+        form.key_val_sep = "\": ";
+        form.val_end     = ", ";
+        form.tool_end    = "}, ";
+        form.scope_end   = "]</tool_calls>";
+        form.raw_argval  = false;
+        form.last_val_end = "";
+        form.last_tool_end = "}";
+        return form;
+    })();
+    builder.consume_reasoning_with_xml_tool_calls(form, "<thinking>", "</thinking>");
+}
+
+static void common_chat_parse_xiaomi_mimo(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form = ([]() {
+        xml_tool_call_format form {};
+        form.scope_start = "";
+        form.tool_start  = "<tool_call>\n{\"name\": \"";
+        form.tool_sep    = "\", \"arguments\": {";
+        form.key_start   = "\"";
+        form.key_val_sep = "\": ";
+        form.val_end     = ", ";
+        form.tool_end    = "}\n</tool_call>";
+        form.scope_end   = "";
+        form.raw_argval  = false;
+        form.last_val_end = "";
+        return form;
+    })();
+    builder.consume_reasoning_with_xml_tool_calls(form);
+}
+
+static void common_chat_parse_gpt_oss(common_chat_msg_parser & builder) {
+    static const std::string constraint = "(?: (<\\|constrain\\|>)?([a-zA-Z0-9_-]+))";
+    static const std::string recipient("(?: to=functions\\.([^<\\s]+))");
+
+    static const common_regex start_regex("<\\|start\\|>assistant");
+    static const common_regex analysis_regex("<\\|channel\\|>analysis");
+    static const common_regex final_regex("<\\|channel\\|>final" + constraint + "?");
+    static const common_regex preamble_regex("<\\|channel\\|>commentary");
+    static const common_regex tool_call1_regex(recipient + "<\\|channel\\|>(analysis|commentary)" + constraint + "?");
+    static const common_regex tool_call2_regex("<\\|channel\\|>(analysis|commentary)" + recipient + constraint + "?");
+
+    auto consume_end = [&](bool include_end = false) {
+        if (auto res = builder.try_find_literal("<|end|>")) {
+            return res->prelude + (include_end ? builder.str(res->groups[0]) : "");
+        }
+        return builder.consume_rest();
+    };
+
+    auto handle_tool_call = [&](const std::string & name) {
+        if (auto args = builder.try_consume_json_with_dumped_args({{}})) {
+            if (builder.syntax().parse_tool_calls) {
+                if (!builder.add_tool_call(name, "", args->value) || args->is_partial) {
+                    throw common_chat_msg_partial_exception("incomplete tool call");
+                }
+            } else if (args->is_partial) {
+                throw common_chat_msg_partial_exception("incomplete tool call");
+            }
+        }
+    };
+
+    auto regex_match = [](const common_regex & regex, const std::string & input) -> std::optional<common_regex_match> {
+        auto match = regex.search(input, 0, true);
+        if (match.type == COMMON_REGEX_MATCH_TYPE_FULL) {
+            return match;
+        }
+        return std::nullopt;
+    };
+
+    do {
+        auto header_start_pos = builder.pos();
+        auto content_start = builder.try_find_literal("<|message|>");
+        if (!content_start) {
+            throw common_chat_msg_partial_exception("incomplete header");
+        }
+
+        auto header = content_start->prelude;
+
+        if (auto match = regex_match(tool_call1_regex, header)) {
+            auto group = match->groups[1];
+            auto name = header.substr(group.begin, group.end - group.begin);
+            handle_tool_call(name);
+            continue;
+        }
+
+        if (auto match = regex_match(tool_call2_regex, header)) {
+            auto group = match->groups[2];
+            auto name = header.substr(group.begin, group.end - group.begin);
+            handle_tool_call(name);
+            continue;
+        }
+
+        if (regex_match(analysis_regex, header)) {
+            builder.move_to(header_start_pos);
+            if (builder.syntax().reasoning_format == COMMON_REASONING_FORMAT_NONE || builder.syntax().reasoning_in_content) {
+                builder.add_content(consume_end(true));
+            } else {
+                builder.try_parse_reasoning("<|channel|>analysis<|message|>", "<|end|>");
+            }
+            continue;
+        }
+
+        if(regex_match(final_regex, header) || regex_match(preamble_regex, header)) {
+            builder.add_content(consume_end());
+            continue;
+        }
+
+        // Possibly a malformed message, attempt to recover by rolling
+        // back to pick up the next <|start|>
+        LOG_DBG("%s: unknown header from message: %s\n", __func__, header.c_str());
+        builder.move_to(header_start_pos);
+    } while (builder.try_find_regex(start_regex, std::string::npos, false));
+
+    auto remaining = builder.consume_rest();
+    if (!remaining.empty()) {
+        LOG_DBG("%s: content after last message: %s\n", __func__, remaining.c_str());
+    }
+}
+
+static void common_chat_parse_glm_4_5(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form {
+        /* form.scope_start  = */ "",
+        /* form.tool_start   = */ "<tool_call>",
+        /* form.tool_sep     = */ "",
+        /* form.key_start    = */ "<arg_key>",
+        /* form.key_val_sep  = */ "</arg_key>",
+        /* form.val_end      = */ "</arg_value>",
+        /* form.tool_end     = */ "</tool_call>",
+        /* form.scope_end    = */ "",
+        /* form.key_val_sep2 = */ "<arg_value>",
+    };
+    builder.consume_reasoning_with_xml_tool_calls(form, "<think>", "</think>");
+}
+
+static void common_chat_parse_firefunction_v2(common_chat_msg_parser & builder) {
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+    static const common_regex prefix(regex_escape(" functools["));
+    parse_prefixed_json_tool_call_array(builder, prefix, /* rstrip_prefix= */ 1);
+}
+
+static void common_chat_parse_functionary_v3_2(common_chat_msg_parser & builder) {
+    static const common_regex function_regex_start_only(R"((\w+\n\{|python\n|all\n))");
+    static const common_regex function_regex(R"(>>>(\w+\n\{|python\n|all\n))");
+    static const common_regex close_regex(R"(\s*)");
+
+    parse_json_tool_calls(
+        builder,
+        std::nullopt,
+        function_regex_start_only,
+        function_regex,
+        close_regex,
+        std::nullopt,
+        /* allow_raw_python= */ true,
+        /* get_function_name= */ [&](const auto & res) -> std::string {
+            auto at_start = res.groups[0].begin == 0;
+            auto name = builder.str(res.groups[1]);
+            if (!name.empty() && name.back() == '{') {
+                // Unconsume the opening brace '{' to ensure the JSON parsing goes well.
+                builder.move_back(1);
+            }
+            auto idx = name.find_last_not_of("\n{");
+            name = name.substr(0, idx + 1);
+            if (at_start && name == "all") {
+                return "";
+            }
+            return name;
+        });
+}
+
+static void common_chat_parse_functionary_v3_1_llama_3_1(common_chat_msg_parser & builder) {
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+    // This version of Functionary still supports the llama 3.1 tool call format for the python tool.
+    static const common_regex python_tag_regex(regex_escape("<|python_tag|>"));
+
+    static const common_regex function_regex(R"(<function=(\w+)>)");
+    static const common_regex close_regex(R"(</function>)");
+
+    parse_json_tool_calls(
+        builder,
+        /* block_open= */ std::nullopt,
+        /* function_regex_start_only= */ std::nullopt,
+        function_regex,
+        close_regex,
+        std::nullopt);
+
+    if (auto res = builder.try_find_regex(python_tag_regex)) {
+        auto arguments = wrap_code_as_arguments(builder, builder.consume_rest());
+        builder.add_tool_call("python", "", arguments);
+        return;
+    }
+}
+
+static void common_chat_parse_hermes_2_pro(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("<think>", "</think>");
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    static const common_regex open_regex(
+        "(?:"
+            "(```(?:xml|json)?\\n\\s*)?" // match 1 (block_start)
+            "("                          // match 2 (open_tag)
+                "<tool_call>"
+                "|<function_call>"
+                "|<tool>"
+                "|<tools>"
+                "|<response>"
+                "|<json>"
+                "|<xml>"
+                "|<JSON>"
+            ")?"
+            "(\\s*\\{\\s*\"name\")" // match 3 (named tool call)
+        ")"
+        "|<function=([^>]+)>"            // match 4 (function name)
+        "|<function name=\"([^\"]+)\">"  // match 5 (function name again)
+    );
+
+    while (auto res = builder.try_find_regex(open_regex)) {
+        const auto & block_start = res->groups[1];
+        std::string block_end = block_start.empty() ? "" : "```";
+
+        const auto & open_tag = res->groups[2];
+        std::string close_tag;
+
+        if (!res->groups[3].empty()) {
+            builder.move_to(res->groups[3].begin);
+            close_tag = open_tag.empty() ? "" : "</" + builder.str(open_tag).substr(1);
+
+            if (auto tool_call = builder.try_consume_json_with_dumped_args({{"arguments"}})) {
+                if (!builder.add_tool_call(tool_call->value) || tool_call->is_partial) {
+                    throw common_chat_msg_partial_exception("incomplete tool call");
+                }
+                builder.consume_spaces();
+                builder.consume_literal(close_tag);
+                builder.consume_spaces();
+                if (!block_end.empty()) {
+                    builder.consume_literal(block_end);
+                    builder.consume_spaces();
+                }
+            } else {
+                throw common_chat_msg_partial_exception("failed to parse tool call");
+            }
+        } else {
+            auto function_name = builder.str(res->groups[4]);
+            if (function_name.empty()) {
+                function_name = builder.str(res->groups[5]);
+            }
+            GGML_ASSERT(!function_name.empty());
+
+            close_tag = "</function>";
+
+            if (auto arguments = builder.try_consume_json_with_dumped_args({{}})) {
+                if (!builder.add_tool_call(function_name, "", arguments->value) || arguments->is_partial) {
+                    throw common_chat_msg_partial_exception("incomplete tool call");
+                }
+                builder.consume_spaces();
+                builder.consume_literal(close_tag);
+                builder.consume_spaces();
+                if (!block_end.empty()) {
+                    builder.consume_literal(block_end);
+                    builder.consume_spaces();
+                }
+            }
+        }
+    }
+
+    builder.add_content(builder.consume_rest());
+}
+
+static void common_chat_parse_granite(common_chat_msg_parser & builder) {
+    // Parse thinking tags
+    static const common_regex start_think_regex(regex_escape("<think>"));
+    static const common_regex end_think_regex(regex_escape("</think>"));
+    // Granite models output partial tokens such as "<" and "<think".
+    // By leveraging try_consume_regex()/try_find_regex() throwing
+    // common_chat_msg_partial_exception for these partial tokens,
+    // processing is interrupted and the tokens are not passed to add_content().
+    if (auto res = builder.try_consume_regex(start_think_regex)) {
+        // Restore position for try_parse_reasoning()
+        builder.move_to(res->groups[0].begin);
+        builder.try_find_regex(end_think_regex, std::string::npos, false);
+        // Restore position for try_parse_reasoning()
+        builder.move_to(res->groups[0].begin);
+    }
+    builder.try_parse_reasoning("<think>", "</think>");
+
+    // Parse response tags
+    static const common_regex start_response_regex(regex_escape("<response>"));
+    static const common_regex end_response_regex(regex_escape("</response>"));
+    // Granite models output partial tokens such as "<" and "<response".
+    // Same hack as reasoning parsing.
+    if (builder.try_consume_regex(start_response_regex)) {
+        builder.try_find_regex(end_response_regex);
+    }
+
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    // Look for tool calls
+    static const common_regex tool_call_regex(regex_escape("<|tool_call|>"));
+    if (auto res = builder.try_find_regex(tool_call_regex)) {
+        builder.move_to(res->groups[0].end);
+
+        // Expect JSON array of tool calls
+        if (auto tool_call = builder.try_consume_json_with_dumped_args({{{"arguments"}}})) {
+            if (!builder.add_tool_calls(tool_call->value) || tool_call->is_partial) {
+                throw common_chat_msg_partial_exception("incomplete tool call");
+            }
+        }
+    } else {
+        builder.add_content(builder.consume_rest());
+    }
+}
+
+static void common_chat_parse_nemotron_v2(common_chat_msg_parser & builder) {
+    // Parse thinking tags
+    builder.try_parse_reasoning("<think>", "</think>");
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    // Look for tool calls
+    static const common_regex tool_call_regex(regex_escape("<TOOLCALL>"));
+    if (auto res = builder.try_find_regex(tool_call_regex)) {
+        builder.move_to(res->groups[0].end);
+
+        // Expect JSON array of tool calls
+        auto tool_calls_data = builder.consume_json();
+        if (tool_calls_data.json.is_array()) {
+            if (!builder.try_consume_literal("</TOOLCALL>")) {
+                throw common_chat_msg_partial_exception("Incomplete tool call");
+            }
+            builder.add_tool_calls(tool_calls_data.json);
+        } else {
+            throw common_chat_msg_partial_exception("Incomplete tool call");
+        }
+    }
+    builder.add_content(builder.consume_rest());
+}
+
+static void common_chat_parse_apertus(common_chat_msg_parser & builder) {
+    // Parse thinking tags
+    builder.try_parse_reasoning("<|inner_prefix|>", "<|inner_suffix|>");
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    // Look for tool calls
+    static const common_regex tool_call_regex(regex_escape("<|tools_prefix|>"));
+    if (auto res = builder.try_find_regex(tool_call_regex)) {
+        builder.move_to(res->groups[0].end);
+
+        auto tool_calls_data = builder.consume_json();
+        if (tool_calls_data.json.is_array()) {
+            builder.consume_spaces();
+            if (!builder.try_consume_literal("<|tools_suffix|>")) {
+                throw common_chat_msg_partial_exception("Incomplete tool call");
+            }
+            for (const auto & value : tool_calls_data.json) {
+                if (value.is_object()) {
+                    builder.add_tool_call_short_form(value);
+                }
+            }
+        } else {
+            throw common_chat_msg_partial_exception("Incomplete tool call");
+        }
+    }
+    builder.add_content(builder.consume_rest());
+}
+
+
+static void common_chat_parse_lfm2(common_chat_msg_parser & builder) {
+    if (!builder.syntax().parse_tool_calls) {
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    // LFM2 format: <|tool_call_start|>[{"name": "get_current_time", "arguments": {"location": "Paris"}}]<|tool_call_end|>
+    static const common_regex tool_call_start_regex(regex_escape("<|tool_call_start|>"));
+    static const common_regex tool_call_end_regex(regex_escape("<|tool_call_end|>"));
+
+    // Loop through all tool calls
+    while (auto res = builder.try_find_regex(tool_call_start_regex, std::string::npos, /* add_prelude_to_content= */ true)) {
+        builder.move_to(res->groups[0].end);
+
+        // Parse JSON array format: [{"name": "...", "arguments": {...}}]
+        auto tool_calls_data = builder.consume_json();
+
+        // Consume end marker
+        builder.consume_spaces();
+        if (!builder.try_consume_regex(tool_call_end_regex)) {
+            throw common_chat_msg_partial_exception("Expected <|tool_call_end|>");
+        }
+
+        // Process each tool call in the array
+        if (tool_calls_data.json.is_array()) {
+            for (const auto & tool_call : tool_calls_data.json) {
+                if (!tool_call.is_object()) {
+                    throw common_chat_msg_partial_exception("Tool call must be an object");
+                }
+
+                if (!tool_call.contains("name")) {
+                    throw common_chat_msg_partial_exception("Tool call missing 'name' field");
+                }
+
+                std::string function_name = tool_call.at("name");
+                std::string arguments = "{}";
+
+                if (tool_call.contains("arguments")) {
+                    if (tool_call.at("arguments").is_object()) {
+                        arguments = tool_call.at("arguments").dump();
+                    } else if (tool_call.at("arguments").is_string()) {
+                        arguments = tool_call.at("arguments");
+                    }
+                }
+
+                if (!builder.add_tool_call(function_name, "", arguments)) {
+                    throw common_chat_msg_partial_exception("Incomplete tool call");
+                }
+            }
+        } else {
+            throw common_chat_msg_partial_exception("Expected JSON array for tool calls");
+        }
+
+        // Consume any trailing whitespace after this tool call
+        builder.consume_spaces();
+    }
+
+    // Consume any remaining content after all tool calls
+    auto remaining = builder.consume_rest();
+    if (!string_strip(remaining).empty()) {
+        builder.add_content(remaining);
+    }
+}
+
+static void common_chat_parse_seed_oss(common_chat_msg_parser & builder) {
+    static const xml_tool_call_format form {
+        /* form.scope_start = */ "<seed:tool_call>",
+        /* form.tool_start  = */ "<function=",
+        /* form.tool_sep    = */ ">",
+        /* form.key_start   = */ "<parameter=",
+        /* form.key_val_sep = */ ">",
+        /* form.val_end     = */ "</parameter>",
+        /* form.tool_end    = */ "</function>",
+        /* form.scope_end   = */ "</seed:tool_call>",
+    };
+    builder.consume_reasoning_with_xml_tool_calls(form, "<seed:think>", "</seed:think>");
+}
+
+static void common_chat_parse_solar_open(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("<|think|>", "<|end|><|begin|>assistant<|content|>");
+
+    // TODO: Tool calling
+
+    builder.add_content(builder.consume_rest());
+}
+
+static void common_chat_parse_exaone_moe_content(common_chat_msg_parser & builder) {
+    // 1) <tool_call>{ "name": "...", "arguments": {...} }</tool_call>
+    // 2) <tool_call>{ "id": "...", "type": "function", "function": { "name": "...", "arguments": {...} } }</tool_call>
+    static const common_regex tool_call_open(R"(<tool_call[^>]*>)");
+
+    if (!builder.syntax().parse_tool_calls) {
+        LOG_DBG("%s: not parse_tool_calls\n", __func__);
+        builder.add_content(builder.consume_rest());
+        return;
+    }
+
+    LOG_DBG("%s: parse_tool_calls\n", __func__);
+
+    // Find all <tool_call></tool_call> blocks
+    while (auto first = builder.try_find_regex(tool_call_open, std::string::npos, /* add_prelude_to_content= */ true)) {
+        builder.move_to(first->groups[0].end);
+        builder.consume_spaces();
+
+        builder.try_consume_literal("```json");
+        builder.try_consume_literal("```");
+        builder.consume_spaces();
+
+        // Consume JSON object
+        auto data = builder.consume_json();
+
+        builder.consume_spaces();
+        builder.try_consume_literal("```");
+        builder.consume_spaces();
+
+        if (!builder.try_consume_literal("</tool_call>")) {
+            throw common_chat_msg_partial_exception("incomplete tool call");
+        }
+        builder.consume_spaces();
+
+        // Extract name and arguments
+        std::string name;
+        std::string id;
+        nlohmann::ordered_json arguments;
+
+        const auto extract_args = [&](const nlohmann::ordered_json & obj) -> bool {
+            if (!obj.contains("name") || !obj.contains("arguments")) {
+                return false;
+            }
+            name = obj.at("name").get<std::string>();
+            arguments = obj.at("arguments");
+            if (obj.contains("id") && obj.at("id").is_string()) {
+                id = obj.at("id").get<std::string>();
+            }
+            return true;
+        };
+
+        if (!extract_args(data.json)) {
+            if (data.json.contains("function") && data.json.at("function").is_object()) {
+                auto fn = data.json.at("function");
+                extract_args(fn);
+                if (id.empty() && data.json.contains("id") && data.json.at("id").is_string()) {
+                    id = data.json.at("id").get<std::string>();
+                }
+            }
+        }
+
+        // If name is empty, treat the JSON object as content
+        if (name.empty()) {
+            LOG_DBG("%s: tool call missing name, treating as content\n", __func__);
+            builder.add_content(data.json.dump());
+            continue;
+        }
+
+        std::string args_str = arguments.dump();
+        if (!builder.add_tool_call(name, id, args_str)) {
+            throw common_chat_msg_partial_exception("incomplete tool call");
+        }
+    }
+
+    builder.add_content(builder.consume_rest());
+}
+
+static void common_chat_parse_exaone_moe(common_chat_msg_parser & builder) {
+    LOG_DBG("%s: parsing exaone_moe\n", __func__);
+    // EXAONE MoE outputs reasoning content between "<think>" and "</think>" tags, followed by regular content
+    // First try to parse using the standard reasoning parsing method
+    LOG_DBG("%s: thinking_forced_open: %s\n", __func__, std::to_string(builder.syntax().thinking_forced_open).c_str());
+
+    auto start_pos = builder.pos();
+    auto found_end_think = builder.try_find_literal("</think>");
+    builder.move_to(start_pos);
+
+    if (builder.syntax().thinking_forced_open && !builder.is_partial() && !found_end_think) {
+        LOG_DBG("%s: no end_think, not partial, adding content\n", __func__);
+        common_chat_parse_exaone_moe_content(builder);
+    } else if (builder.try_parse_reasoning("<think>", "</think>")) {
+        // If reasoning was parsed successfully, the remaining content is regular content
+        LOG_DBG("%s: parsed reasoning, adding content\n", __func__);
+        common_chat_parse_exaone_moe_content(builder);
+    } else {
+        if (builder.syntax().reasoning_format == COMMON_REASONING_FORMAT_NONE) {
+          LOG_DBG("%s: reasoning_format none, adding content\n", __func__);
+          common_chat_parse_exaone_moe_content(builder);
+          return;
+        }
+        // If no reasoning tags found, check if we should treat everything as reasoning
+        if (builder.syntax().thinking_forced_open) {
+            // If thinking is forced open but no tags found, treat everything as reasoning
+            LOG_DBG("%s: thinking_forced_open, adding reasoning content\n", __func__);
+            builder.add_reasoning_content(builder.consume_rest());
+        } else {
+            LOG_DBG("%s: no thinking_forced_open, adding content\n", __func__);
+            common_chat_parse_exaone_moe_content(builder);
+        }
+    }
+}
+
+static void common_chat_parse_content_only(common_chat_msg_parser & builder) {
+    builder.try_parse_reasoning("<think>", "</think>");
+    builder.add_content(builder.consume_rest());
+}
+
+static void common_chat_parse(common_chat_msg_parser & builder) {
+    LOG_DBG("Parsing input with format %s: %s\n", common_chat_format_name(builder.syntax().format), builder.input().c_str());
+
+    switch (builder.syntax().format) {
+        case COMMON_CHAT_FORMAT_CONTENT_ONLY:
+            common_chat_parse_content_only(builder);
+            break;
+        case COMMON_CHAT_FORMAT_GENERIC:
+            common_chat_parse_generic(builder);
+            break;
+        case COMMON_CHAT_FORMAT_MISTRAL_NEMO:
+            common_chat_parse_mistral_nemo(builder);
+            break;
+        case COMMON_CHAT_FORMAT_MAGISTRAL:
+            common_chat_parse_magistral(builder);
+            break;
+        case COMMON_CHAT_FORMAT_LLAMA_3_X:
+            common_chat_parse_llama_3_1(builder);
+            break;
+        case COMMON_CHAT_FORMAT_LLAMA_3_X_WITH_BUILTIN_TOOLS:
+            common_chat_parse_llama_3_1(builder, /* with_builtin_tools= */ true);
+            break;
+        case COMMON_CHAT_FORMAT_DEEPSEEK_R1:
+            common_chat_parse_deepseek_r1(builder);
+            break;
+        case COMMON_CHAT_FORMAT_DEEPSEEK_V3_1:
+            common_chat_parse_deepseek_v3_1(builder);
+            break;
+        case COMMON_CHAT_FORMAT_FUNCTIONARY_V3_2:
+            common_chat_parse_functionary_v3_2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_FUNCTIONARY_V3_1_LLAMA_3_1:
+            common_chat_parse_functionary_v3_1_llama_3_1(builder);
+            break;
+        case COMMON_CHAT_FORMAT_HERMES_2_PRO:
+            common_chat_parse_hermes_2_pro(builder);
+            break;
+        case COMMON_CHAT_FORMAT_FIREFUNCTION_V2:
+            common_chat_parse_firefunction_v2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_COMMAND_R7B:
+            common_chat_parse_command_r7b(builder);
+            break;
+        case COMMON_CHAT_FORMAT_GRANITE:
+            common_chat_parse_granite(builder);
+            break;
+        case COMMON_CHAT_FORMAT_GPT_OSS:
+            common_chat_parse_gpt_oss(builder);
+            break;
+        case COMMON_CHAT_FORMAT_SEED_OSS:
+            common_chat_parse_seed_oss(builder);
+            break;
+        case COMMON_CHAT_FORMAT_NEMOTRON_V2:
+            common_chat_parse_nemotron_v2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_APERTUS:
+            common_chat_parse_apertus(builder);
+            break;
+        case COMMON_CHAT_FORMAT_LFM2_WITH_JSON_TOOLS:
+            common_chat_parse_lfm2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_MINIMAX_M2:
+            common_chat_parse_minimax_m2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_GLM_4_5:
+            common_chat_parse_glm_4_5(builder);
+            break;
+        case COMMON_CHAT_FORMAT_KIMI_K2:
+            common_chat_parse_kimi_k2(builder);
+            break;
+        case COMMON_CHAT_FORMAT_QWEN3_CODER_XML:
+            common_chat_parse_qwen3_coder_xml(builder);
+            break;
+        case COMMON_CHAT_FORMAT_APRIEL_1_5:
+            common_chat_parse_apriel_1_5(builder);
+            break;
+        case COMMON_CHAT_FORMAT_XIAOMI_MIMO:
+            common_chat_parse_xiaomi_mimo(builder);
+            break;
+        case COMMON_CHAT_FORMAT_SOLAR_OPEN:
+            common_chat_parse_solar_open(builder);
+            break;
+        case COMMON_CHAT_FORMAT_EXAONE_MOE:
+            common_chat_parse_exaone_moe(builder);
+            break;
+        default:
+            throw std::runtime_error(std::string("Unsupported format: ") + common_chat_format_name(builder.syntax().format));
+    }
+    builder.finish();
+}
+
+common_chat_msg common_chat_parse(const std::string & input, bool is_partial, const common_chat_parser_params & syntax) {
+    if (syntax.format == COMMON_CHAT_FORMAT_PEG_SIMPLE ||
+        syntax.format == COMMON_CHAT_FORMAT_PEG_NATIVE ||
+        syntax.format == COMMON_CHAT_FORMAT_PEG_CONSTRUCTED) {
+        return common_chat_peg_parse(syntax.parser, input, is_partial, syntax);
+    }
+    common_chat_msg_parser builder(input, is_partial, syntax);
+    try {
+        common_chat_parse(builder);
+    } catch (const common_chat_msg_partial_exception & ex) {
+        LOG_DBG("Partial parse: %s\n", ex.what());
+        if (!is_partial) {
+            builder.clear_tools();
+            builder.move_to(0);
+            common_chat_parse_content_only(builder);
+        }
+    }
+    auto msg = builder.result();
+    if (!is_partial) {
+        LOG_DBG("Parsed message: %s\n", common_chat_msgs_to_json_oaicompat({msg}).at(0).dump().c_str());
+    }
+    return msg;
+}
+
+common_chat_msg common_chat_peg_parse(const common_peg_arena & parser, const std::string & input, bool is_partial, const common_chat_parser_params & syntax) {
+    if (parser.empty()) {
+        throw std::runtime_error("Failed to parse due to missing parser definition.");
+    }
+
+    LOG_DBG("Parsing input with format %s: %s\n", common_chat_format_name(syntax.format), input.c_str());
+
+    common_peg_parse_context ctx(input, is_partial);
+    auto result = parser.parse(ctx);
+    if (result.fail()) {
+        throw std::runtime_error(std::string("Failed to parse input at pos ") + std::to_string(result.end));
+    }
+
+    common_chat_msg msg;
+    msg.role = "assistant";
+
+    if (syntax.format == COMMON_CHAT_FORMAT_PEG_NATIVE) {
+        auto mapper = common_chat_peg_native_mapper(msg);
+        mapper.from_ast(ctx.ast, result);
+    } else if (syntax.format == COMMON_CHAT_FORMAT_PEG_CONSTRUCTED) {
+        auto mapper = common_chat_peg_constructed_mapper(msg);
+        mapper.from_ast(ctx.ast, result);
+    } else {
+        // Generic mapper
+        auto mapper = common_chat_peg_mapper(msg);
+        mapper.from_ast(ctx.ast, result);
+    }
+    if (!is_partial) {
+        LOG_DBG("Parsed message: %s\n", common_chat_msgs_to_json_oaicompat({msg}).at(0).dump().c_str());
+    }
+    return msg;
+}