#pragma once
#include "string.h"
#include "utils.h"
#include <algorithm>
#include <cmath>
#include <cstdint>
#include <functional>
#include <map>
#include <memory>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#include <unordered_map>
namespace jinja {
struct value_t;
using value = std::shared_ptr<value_t>;
// Helper to check the type of a value
template<typename T>
struct extract_pointee {
using type = T;
};
template<typename U>
struct extract_pointee<std::shared_ptr<U>> {
using type = U;
};
template<typename T>
bool is_val(const value & ptr) {
using PointeeType = typename extract_pointee<T>::type;
return dynamic_cast<const PointeeType*>(ptr.get()) != nullptr;
}
template<typename T>
bool is_val(const value_t * ptr) {
using PointeeType = typename extract_pointee<T>::type;
return dynamic_cast<const PointeeType*>(ptr) != nullptr;
}
template<typename T, typename... Args>
std::shared_ptr<typename extract_pointee<T>::type> mk_val(Args&&... args) {
using PointeeType = typename extract_pointee<T>::type;
return std::make_shared<PointeeType>(std::forward<Args>(args)...);
}
template<typename T>
const typename extract_pointee<T>::type * cast_val(const value & ptr) {
using PointeeType = typename extract_pointee<T>::type;
return dynamic_cast<const PointeeType*>(ptr.get());
}
template<typename T>
typename extract_pointee<T>::type * cast_val(value & ptr) {
using PointeeType = typename extract_pointee<T>::type;
return dynamic_cast<PointeeType*>(ptr.get());
}
// End Helper
struct context; // forward declaration
// for converting from JSON to jinja values
// example input JSON:
// {
// "messages": [
// {"role": "user", "content": "Hello!"},
// {"role": "assistant", "content": "Hi there!"}
// ],
// "bos_token": "<s>",
// "eos_token": "</s>",
// }
//
// to mark strings as user input, wrap them in a special object:
// {
// "messages": [
// {
// "role": "user",
// "content": {"__input__": "Hello!"} // this string is user input
// },
// ...
// ],
// }
//
// marking input can be useful for tracking data provenance
// and preventing template injection attacks
//
// Note: T_JSON can be common_json
template<typename T_JSON>
void global_from_json(context & ctx, const T_JSON & json_obj, bool mark_input);
//
// base value type
//
struct func_args; // function argument values
using func_hptr = value(const func_args &);
using func_handler = std::function<func_hptr>;
using func_builtins = std::map<std::string, func_handler>;
enum value_compare_op { eq, ge, gt, lt, ne };
bool value_compare(const value & a, const value & b, value_compare_op op);
struct value_t {
int64_t val_int;
double val_flt;
string val_str;
std::vector<value> val_arr;
std::vector<std::pair<value, value>> val_obj;
func_handler val_func;
// only used if ctx.is_get_stats = true
struct stats_t {
bool used = false;
// ops can be builtin calls or operators: "array_access", "object_access"
std::set<std::string> ops;
// utility to recursively mark value and its children as used
static void mark_used(value & val, bool deep = false);
} stats;
value_t() = default;
value_t(const value_t &) = default;
virtual ~value_t() = default;
// Note: only for debugging and error reporting purposes
virtual std::string type() const { return ""; }
virtual int64_t as_int() const { throw_type_error("is not an int value"); }
virtual double as_float() const { throw_type_error("is not a float value"); }
virtual string as_string() const { throw_type_error("is not a string value"); }
virtual bool as_bool() const { throw_type_error("is not a bool value"); }
virtual const std::vector<value> & as_array() const { throw_type_error("is not an array value"); }
virtual const std::vector<std::pair<value, value>> & as_ordered_object() const { throw_type_error("is not an object value"); }
virtual value invoke(const func_args &) const { throw_type_error("is not a function value"); }
virtual bool is_none() const { return false; }
virtual bool is_undefined() const { return false; }
virtual const func_builtins & get_builtins() const { throw_type_error("has no builtins"); }
virtual bool has_key(const value &) { throw_type_error("is not an object value"); }
virtual void insert(const value & /* key */, const value & /* val */) { throw_type_error("is not an object value"); }
virtual value & at(const value & /* key */, value & /* default_val */) { throw_type_error("is not an object value"); }
virtual value & at(const value & /* key */) { throw_type_error("is not an object value"); }
virtual value & at(const std::string & /* key */, value & /* default_val */) { throw_type_error("is not an object value"); }
virtual value & at(const std::string & /* key */) { throw_type_error("is not an object value"); }
virtual value & at(int64_t /* idx */, value & /* default_val */) { throw_type_error("is not an array value"); }
virtual value & at(int64_t /* idx */) { throw_type_error("is not an array value"); }
virtual bool is_numeric() const { return false; }
virtual bool is_hashable() const { return false; }
virtual bool is_immutable() const { return true; }
virtual hasher unique_hash() const noexcept = 0;
// TODO: C++20 <=> operator
// NOTE: We are treating == as equivalent (for normal comparisons) and != as strict nonequal (for strict (is) comparisons)
virtual bool operator==(const value_t & other) const { return equivalent(other); }
virtual bool operator!=(const value_t & other) const { return nonequal(other); }
// Note: only for debugging purposes
virtual std::string as_repr() const { return as_string().str(); }
private:
[[noreturn]] void throw_type_error(const char* expected) const {
throw std::runtime_error(type() + " " + expected);
}
protected:
virtual bool equivalent(const value_t &) const = 0;
virtual bool nonequal(const value_t & other) const { return !equivalent(other); }
};
//
// utils
//
const func_builtins & global_builtins();
std::string value_to_json(const value & val, int indent = -1, const std::string_view item_sep = ", ", const std::string_view key_sep = ": ");
// Note: only used for debugging purposes
std::string value_to_string_repr(const value & val);
struct not_implemented_exception : public std::runtime_error {
not_implemented_exception(const std::string & msg) : std::runtime_error("NotImplemented: " + msg) {}
};
struct value_hasher {
size_t operator()(const value & val) const noexcept {
return val->unique_hash().digest();
}
};
struct value_equivalence {
bool operator()(const value & lhs, const value & rhs) const {
return *lhs == *rhs;
}
bool operator()(const std::pair<value, value> & lhs, const std::pair<value, value> & rhs) const {
return *(lhs.first) == *(rhs.first) && *(lhs.second) == *(rhs.second);
}
};
struct value_equality {
bool operator()(const value & lhs, const value & rhs) const {
return !(*lhs != *rhs);
}
};
//
// primitive value types
//
struct value_int_t : public value_t {
value_int_t(int64_t v) {
val_int = v;
val_flt = static_cast<double>(v);
if (static_cast<int64_t>(val_flt) != v) {
val_flt = v < 0 ? -INFINITY : INFINITY;
}
}
virtual std::string type() const override { return "Integer"; }
virtual int64_t as_int() const override { return val_int; }
virtual double as_float() const override { return val_flt; }
virtual string as_string() const override { return std::to_string(val_int); }
virtual bool as_bool() const override {
return val_int != 0;
}
virtual const func_builtins & get_builtins() const override;
virtual bool is_numeric() const override { return true; }
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
return hasher(typeid(*this))
.update(&val_int, sizeof(val_int))
.update(&val_flt, sizeof(val_flt));
}
protected:
virtual bool equivalent(const value_t & other) const override {
return other.is_numeric() && val_int == other.val_int && val_flt == other.val_flt;
}
virtual bool nonequal(const value_t & other) const override {
return !(typeid(*this) == typeid(other) && val_int == other.val_int);
}
};
using value_int = std::shared_ptr<value_int_t>;
struct value_float_t : public value_t {
value val;
value_float_t(double v) {
val_flt = v;
val_int = std::isfinite(v) ? static_cast<int64_t>(v) : 0;
val = mk_val<value_int>(val_int);
}
virtual std::string type() const override { return "Float"; }
virtual double as_float() const override { return val_flt; }
virtual int64_t as_int() const override { return val_int; }
virtual string as_string() const override {
std::string out = std::to_string(val_flt);
out.erase(out.find_last_not_of('0') + 1, std::string::npos); // remove trailing zeros
if (out.back() == '.') out.push_back('0'); // leave one zero if no decimals
return out;
}
virtual bool as_bool() const override {
return val_flt != 0.0;
}
virtual const func_builtins & get_builtins() const override;
virtual bool is_numeric() const override { return true; }
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
if (static_cast<double>(val_int) == val_flt) {
return val->unique_hash();
} else {
return hasher(typeid(*this))
.update(&val_int, sizeof(val_int))
.update(&val_flt, sizeof(val_flt));
}
}
protected:
virtual bool equivalent(const value_t & other) const override {
return other.is_numeric() && val_int == other.val_int && val_flt == other.val_flt;
}
virtual bool nonequal(const value_t & other) const override {
return !(typeid(*this) == typeid(other) && val_flt == other.val_flt);
}
};
using value_float = std::shared_ptr<value_float_t>;
struct value_string_t : public value_t {
value_string_t() { val_str = string(); }
value_string_t(const std::string & v) { val_str = string(v); }
value_string_t(const string & v) { val_str = v; }
virtual std::string type() const override { return "String"; }
virtual string as_string() const override { return val_str; }
virtual std::string as_repr() const override {
std::ostringstream ss;
for (const auto & part : val_str.parts) {
ss << (part.is_input ? "INPUT: " : "TMPL: ") << part.val << "\n";
}
return ss.str();
}
virtual bool as_bool() const override {
return val_str.length() > 0;
}
virtual const func_builtins & get_builtins() const override;
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
const auto type_hash = typeid(*this).hash_code();
auto hash = hasher();
hash.update(&type_hash, sizeof(type_hash));
val_str.hash_update(hash);
return hash;
}
void mark_input() {
val_str.mark_input();
}
protected:
virtual bool equivalent(const value_t & other) const override {
return typeid(*this) == typeid(other) && val_str.str() == other.val_str.str();
}
};
using value_string = std::shared_ptr<value_string_t>;
struct value_bool_t : public value_t {
value val;
value_bool_t(bool v) {
val_int = static_cast<int64_t>(v);
val_flt = static_cast<double>(v);
val = mk_val<value_int>(val_int);
}
virtual std::string type() const override { return "Boolean"; }
virtual int64_t as_int() const override { return val_int; }
virtual bool as_bool() const override { return val_int; }
virtual string as_string() const override { return std::string(val_int ? "True" : "False"); }
virtual const func_builtins & get_builtins() const override;
virtual bool is_numeric() const override { return true; }
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
return val->unique_hash();
}
protected:
virtual bool equivalent(const value_t & other) const override {
return other.is_numeric() && val_int == other.val_int && val_flt == other.val_flt;
}
virtual bool nonequal(const value_t & other) const override {
return !(typeid(*this) == typeid(other) && val_int == other.val_int);
}
};
using value_bool = std::shared_ptr<value_bool_t>;
struct value_array_t : public value_t {
value_array_t() = default;
value_array_t(value & v) {
val_arr = v->val_arr;
}
value_array_t(std::vector<value> && arr) {
val_arr = arr;
}
value_array_t(const std::vector<value> & arr) {
val_arr = arr;
}
void reverse() {
if (is_immutable()) {
throw std::runtime_error("Attempting to modify immutable type");
}
std::reverse(val_arr.begin(), val_arr.end());
}
void push_back(const value & val) {
if (is_immutable()) {
throw std::runtime_error("Attempting to modify immutable type");
}
val_arr.push_back(val);
}
void push_back(value && val) {
if (is_immutable()) {
throw std::runtime_error("Attempting to modify immutable type");
}
val_arr.push_back(std::move(val));
}
value pop_at(int64_t index) {
if (is_immutable()) {
throw std::runtime_error("Attempting to modify immutable type");
}
if (index < 0) {
index = static_cast<int64_t>(val_arr.size()) + index;
}
if (index < 0 || index >= static_cast<int64_t>(val_arr.size())) {
throw std::runtime_error("Index " + std::to_string(index) + " out of bounds for array of size " + std::to_string(val_arr.size()));
}
value val = val_arr.at(static_cast<size_t>(index));
val_arr.erase(val_arr.begin() + index);
return val;
}
virtual std::string type() const override { return "Array"; }
virtual bool is_immutable() const override { return false; }
virtual const std::vector<value> & as_array() const override { return val_arr; }
virtual string as_string() const override {
const bool immutable = is_immutable();
std::ostringstream ss;
ss << (immutable ? "(" : "[");
for (size_t i = 0; i < val_arr.size(); i++) {
if (i > 0) ss << ", ";
value val = val_arr.at(i);
ss << value_to_string_repr(val);
}
if (immutable && val_arr.size() == 1) {
ss << ",";
}
ss << (immutable ? ")" : "]");
return ss.str();
}
virtual bool as_bool() const override {
return !val_arr.empty();
}
virtual value & at(int64_t index, value & default_val) override {
if (index < 0) {
index += val_arr.size();
}
if (index < 0 || static_cast<size_t>(index) >= val_arr.size()) {
return default_val;
}
return val_arr[index];
}
virtual value & at(int64_t index) override {
if (index < 0) {
index += val_arr.size();
}
if (index < 0 || static_cast<size_t>(index) >= val_arr.size()) {
throw std::runtime_error("Index " + std::to_string(index) + " out of bounds for array of size " + std::to_string(val_arr.size()));
}
return val_arr[index];
}
virtual const func_builtins & get_builtins() const override;
virtual bool is_hashable() const override {
if (std::all_of(val_arr.begin(), val_arr.end(), [&](auto & val) -> bool {
return val->is_immutable() && val->is_hashable();
})) {
return true;
}
return false;
}
virtual hasher unique_hash() const noexcept override {
auto hash = hasher(typeid(*this));
for (const auto & val : val_arr) {
// must use digest to prevent problems from "concatenation" property of hasher
// for ex. hash of [ "ab", "c" ] should be different from [ "a", "bc" ]
const size_t val_hash = val->unique_hash().digest();
hash.update(&val_hash, sizeof(size_t));
}
return hash;
}
protected:
virtual bool equivalent(const value_t & other) const override {
return typeid(*this) == typeid(other) && is_hashable() && other.is_hashable() && std::equal(val_arr.begin(), val_arr.end(), other.val_arr.begin(), other.val_arr.end(), value_equivalence());
}
};
using value_array = std::shared_ptr<value_array_t>;
struct value_tuple_t : public value_array_t {
value_tuple_t(value & v) {
val_arr = v->val_arr;
}
value_tuple_t(std::vector<value> && arr) {
val_arr = arr;
}
value_tuple_t(const std::vector<value> & arr) {
val_arr = arr;
}
value_tuple_t(const std::pair<value, value> & pair) {
val_arr.push_back(pair.first);
val_arr.push_back(pair.second);
}
virtual std::string type() const override { return "Tuple"; }
virtual bool is_immutable() const override { return true; }
};
using value_tuple = std::shared_ptr<value_tuple_t>;
struct value_object_t : public value_t {
std::unordered_map<value, value, value_hasher, value_equivalence> unordered;
bool has_builtins = true; // context and loop objects do not have builtins
value_object_t() = default;
value_object_t(value & v) {
val_obj = v->val_obj;
for (const auto & pair : val_obj) {
unordered[pair.first] = pair.second;
}
}
value_object_t(const std::map<value, value> & obj) {
for (const auto & pair : obj) {
insert(pair.first, pair.second);
}
}
value_object_t(const std::vector<std::pair<value, value>> & obj) {
for (const auto & pair : obj) {
insert(pair.first, pair.second);
}
}
void insert(const std::string & key, const value & val) {
insert(mk_val<value_string>(key), val);
}
virtual std::string type() const override { return "Object"; }
virtual bool is_immutable() const override { return false; }
virtual const std::vector<std::pair<value, value>> & as_ordered_object() const override { return val_obj; }
virtual string as_string() const override {
std::ostringstream ss;
ss << "{";
for (size_t i = 0; i < val_obj.size(); i++) {
if (i > 0) ss << ", ";
auto & [key, val] = val_obj.at(i);
ss << value_to_string_repr(key) << ": " << value_to_string_repr(val);
}
ss << "}";
return ss.str();
}
virtual bool as_bool() const override {
return !unordered.empty();
}
virtual bool has_key(const value & key) override {
if (!key->is_immutable() || !key->is_hashable()) {
throw std::runtime_error("Object key of unhashable type: " + key->type());
}
return unordered.find(key) != unordered.end();
}
virtual void insert(const value & key, const value & val) override {
bool replaced = false;
if (is_immutable()) {
throw std::runtime_error("Attempting to modify immutable type");
}
if (has_key(key)) {
// if key exists, replace value in ordered list instead of appending
for (auto & pair : val_obj) {
if (*(pair.first) == *key) {
pair.second = val;
replaced = true;
break;
}
}
}
unordered[key] = val;
if (!replaced) {
val_obj.push_back({key, val});
}
}
virtual value & at(const value & key, value & default_val) override {
if (!has_key(key)) {
return default_val;
}
return unordered.at(key);
}
virtual value & at(const value & key) override {
if (!has_key(key)) {
throw std::runtime_error("Key '" + key->as_string().str() + "' not found in value of type " + type());
}
return unordered.at(key);
}
virtual value & at(const std::string & key, value & default_val) override {
value key_val = mk_val<value_string>(key);
return at(key_val, default_val);
}
virtual value & at(const std::string & key) override {
value key_val = mk_val<value_string>(key);
return at(key_val);
}
virtual const func_builtins & get_builtins() const override;
virtual bool is_hashable() const override {
if (std::all_of(val_obj.begin(), val_obj.end(), [&](auto & pair) -> bool {
const auto & val = pair.second;
return val->is_immutable() && val->is_hashable();
})) {
return true;
}
return false;
}
virtual hasher unique_hash() const noexcept override {
auto hash = hasher(typeid(*this));
for (const auto & [key, val] : val_obj) {
// must use digest to prevent problems from "concatenation" property of hasher
// for ex. hash of key="ab", value="c" should be different from key="a", value="bc"
const size_t key_hash = key->unique_hash().digest();
const size_t val_hash = val->unique_hash().digest();
hash.update(&key_hash, sizeof(key_hash));
hash.update(&val_hash, sizeof(val_hash));
}
return hash;
}
protected:
virtual bool equivalent(const value_t & other) const override {
return typeid(*this) == typeid(other) && is_hashable() && other.is_hashable() && std::equal(val_obj.begin(), val_obj.end(), other.val_obj.begin(), other.val_obj.end(), value_equivalence());
}
};
using value_object = std::shared_ptr<value_object_t>;
//
// none and undefined types
//
struct value_none_t : public value_t {
virtual std::string type() const override { return "None"; }
virtual bool is_none() const override { return true; }
virtual bool as_bool() const override { return false; }
virtual string as_string() const override { return string(type()); }
virtual std::string as_repr() const override { return type(); }
virtual const func_builtins & get_builtins() const override;
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
return hasher(typeid(*this));
}
protected:
virtual bool equivalent(const value_t & other) const override {
return typeid(*this) == typeid(other);
}
};
using value_none = std::shared_ptr<value_none_t>;
struct value_undefined_t : public value_t {
std::string hint; // for debugging, to indicate where undefined came from
value_undefined_t(const std::string & h = "") : hint(h) {}
virtual std::string type() const override { return hint.empty() ? "Undefined" : "Undefined (hint: '" + hint + "')"; }
virtual bool is_undefined() const override { return true; }
virtual bool as_bool() const override { return false; }
virtual std::string as_repr() const override { return type(); }
virtual const func_builtins & get_builtins() const override;
virtual hasher unique_hash() const noexcept override {
return hasher(typeid(*this));
}
protected:
virtual bool equivalent(const value_t & other) const override {
return is_undefined() == other.is_undefined();
}
};
using value_undefined = std::shared_ptr<value_undefined_t>;
//
// function type
//
struct func_args {
public:
std::string func_name; // for error messages
context & ctx;
func_args(context & ctx) : ctx(ctx) {}
value get_kwarg(const std::string & key, value default_val) const;
value get_kwarg_or_pos(const std::string & key, size_t pos) const;
value get_pos(size_t pos) const;
value get_pos(size_t pos, value default_val) const;
const std::vector<value> & get_args() const;
size_t count() const { return args.size(); }
void push_back(const value & val);
void push_front(const value & val);
void ensure_count(size_t min, size_t max = 999) const {
size_t n = args.size();
if (n < min || n > max) {
throw std::runtime_error("Function '" + func_name + "' expected between " + std::to_string(min) + " and " + std::to_string(max) + " arguments, got " + std::to_string(n));
}
}
template<typename T> void ensure_val(const value & ptr) const {
if (!is_val<T>(ptr)) {
throw std::runtime_error("Function '" + func_name + "' expected value of type " + std::string(typeid(T).name()) + ", got " + ptr->type());
}
}
void ensure_count(bool require0, bool require1, bool require2, bool require3) const {
static auto bool_to_int = [](bool b) { return b ? 1 : 0; };
size_t required = bool_to_int(require0) + bool_to_int(require1) + bool_to_int(require2) + bool_to_int(require3);
ensure_count(required);
}
template<typename T0> void ensure_vals(bool required0 = true) const {
ensure_count(required0, false, false, false);
if (required0 && args.size() > 0) ensure_val<T0>(args[0]);
}
template<typename T0, typename T1> void ensure_vals(bool required0 = true, bool required1 = true) const {
ensure_count(required0, required1, false, false);
if (required0 && args.size() > 0) ensure_val<T0>(args[0]);
if (required1 && args.size() > 1) ensure_val<T1>(args[1]);
}
template<typename T0, typename T1, typename T2> void ensure_vals(bool required0 = true, bool required1 = true, bool required2 = true) const {
ensure_count(required0, required1, required2, false);
if (required0 && args.size() > 0) ensure_val<T0>(args[0]);
if (required1 && args.size() > 1) ensure_val<T1>(args[1]);
if (required2 && args.size() > 2) ensure_val<T2>(args[2]);
}
template<typename T0, typename T1, typename T2, typename T3> void ensure_vals(bool required0 = true, bool required1 = true, bool required2 = true, bool required3 = true) const {
ensure_count(required0, required1, required2, required3);
if (required0 && args.size() > 0) ensure_val<T0>(args[0]);
if (required1 && args.size() > 1) ensure_val<T1>(args[1]);
if (required2 && args.size() > 2) ensure_val<T2>(args[2]);
if (required3 && args.size() > 3) ensure_val<T3>(args[3]);
}
private:
std::vector<value> args;
};
struct value_func_t : public value_t {
std::string name;
value arg0; // bound "this" argument, if any
value_func_t(const std::string & name, const func_handler & func) : name(name) {
val_func = func;
}
value_func_t(const std::string & name, const func_handler & func, const value & arg_this) : name(name), arg0(arg_this) {
val_func = func;
}
virtual value invoke(const func_args & args) const override {
func_args new_args(args); // copy
new_args.func_name = name;
if (arg0) {
new_args.push_front(arg0);
}
return val_func(new_args);
}
virtual std::string type() const override { return "Function"; }
virtual std::string as_repr() const override { return type() + "<" + name + ">(" + (arg0 ? arg0->as_repr() : "") + ")"; }
virtual bool is_hashable() const override { return false; }
virtual hasher unique_hash() const noexcept override {
// Note: this is unused for now, we don't support function as object keys
// use function pointer as unique identifier
const auto target = val_func.target<func_hptr>();
return hasher(typeid(*this)).update(&target, sizeof(target));
}
protected:
virtual bool equivalent(const value_t & other) const override {
// Note: this is unused for now, we don't support function as object keys
// compare function pointers
// (val_func == other.val_func does not work as std::function::operator== is only used for nullptr check)
const auto target_this = this->val_func.target<func_hptr>();
const auto target_other = other.val_func.target<func_hptr>();
return typeid(*this) == typeid(other) && target_this == target_other;
}
};
using value_func = std::shared_ptr<value_func_t>;
// special value for kwarg
struct value_kwarg_t : public value_t {
std::string key;
value val;
value_kwarg_t(const std::string & k, const value & v) : key(k), val(v) {}
virtual std::string type() const override { return "KwArg"; }
virtual std::string as_repr() const override { return type(); }
virtual bool is_hashable() const override { return true; }
virtual hasher unique_hash() const noexcept override {
const auto type_hash = typeid(*this).hash_code();
auto hash = val->unique_hash();
hash.update(&type_hash, sizeof(type_hash))
.update(key.data(), key.size());
return hash;
}
protected:
virtual bool equivalent(const value_t & other) const override {
const value_kwarg_t & other_val = static_cast<const value_kwarg_t &>(other);
return typeid(*this) == typeid(other) && key == other_val.key && val == other_val.val;
}
};
using value_kwarg = std::shared_ptr<value_kwarg_t>;
} // namespace jinja