tdlight/td/generate/tl_writer_jni_cpp.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "tl_writer_jni_cpp.h"
#include <cassert>
#include <cstdio>
namespace td {
bool TD_TL_writer_jni_cpp::is_built_in_simple_type(const std::string &name) const {
return name == "Bool" || name == "Int32" || name == "Int53" || name == "Int64" || name == "Double" ||
name == "String" || name == "Bytes";
}
bool TD_TL_writer_jni_cpp::is_built_in_complex_type(const std::string &name) const {
return name == "Vector";
}
int TD_TL_writer_jni_cpp::get_parser_type(const tl::tl_combinator *t, const std::string &parser_name) const {
return 1;
}
int TD_TL_writer_jni_cpp::get_additional_function_type(const std::string &additional_function_name) const {
return 1;
}
std::vector<std::string> TD_TL_writer_jni_cpp::get_parsers() const {
std::vector<std::string> parsers;
parsers.push_back("JNIEnv *env, jobject");
return parsers;
}
std::vector<std::string> TD_TL_writer_jni_cpp::get_storers() const {
std::vector<std::string> storers;
storers.push_back("JNIEnv *env, jobject");
storers.push_back("TlStorerToString");
return storers;
}
std::vector<std::string> TD_TL_writer_jni_cpp::get_additional_functions() const {
std::vector<std::string> additional_functions;
additional_functions.push_back("init_jni_vars");
return additional_functions;
}
std::string TD_TL_writer_jni_cpp::gen_base_type_class_name(int arity) const {
assert(arity == 0);
return "Object";
}
std::string TD_TL_writer_jni_cpp::gen_base_tl_class_name() const {
return "Object";
}
std::string TD_TL_writer_jni_cpp::gen_class_begin(const std::string &class_name, const std::string &base_class_name,
bool is_proxy) const {
return "\n"
"jclass " +
class_name + "::Class;\n";
}
std::string TD_TL_writer_jni_cpp::gen_field_definition(const std::string &class_name, const std::string &type_name,
const std::string &field_name) const {
return "jfieldID " + class_name + "::" + field_name + "fieldID;\n";
}
std::string TD_TL_writer_jni_cpp::gen_constructor_id_store(std::int32_t id, int storer_type) const {
return "";
}
std::string TD_TL_writer_jni_cpp::gen_vector_fetch(std::string field_name, const tl::tl_tree_type *t,
const std::vector<tl::var_description> &vars,
int parser_type) const {
std::string vector_type = gen_type_name(t);
if (vector_type == "bool") {
assert(false); // TODO
}
std::string fetch_object = "jni::fetch_object(env, p, " + field_name + "fieldID)";
std::string array_type;
if (vector_type == "std::int32_t") {
array_type = "jintArray";
}
if (vector_type == "std::int64_t") {
array_type = "jlongArray";
}
if (vector_type == "double") {
array_type = "jdoubleArray";
}
if (!array_type.empty()) {
return "jni::fetch_vector(env, (" + array_type + ")" + fetch_object + ");";
}
std::string template_type;
if (vector_type == string_type) {
template_type = "std::string";
} else if (vector_type.compare(0, 11, "std::vector") == 0) {
const tl::tl_tree_type *child = static_cast<const tl::tl_tree_type *>(t->children[0]);
template_type = gen_type_name(child);
if (template_type.compare(0, 10, "object_ptr") == 0) {
template_type = gen_main_class_name(child->type);
}
template_type = "std::vector<" + template_type + ">";
} else if (vector_type == bytes_type) {
std::fprintf(stderr, "Vector of Bytes is not supported\n");
assert(false);
} else {
assert(vector_type.compare(0, 10, "object_ptr") == 0);
template_type = gen_main_class_name(t->type);
}
return "jni::FetchVector<" + template_type + ">::fetch(env, (jobjectArray)" + fetch_object + ");";
}
std::string TD_TL_writer_jni_cpp::gen_type_fetch(const std::string &field_name, const tl::tl_tree_type *tree_type,
const std::vector<tl::var_description> &vars, int parser_type) const {
const tl::tl_type *t = tree_type->type;
const std::string &name = t->name;
assert(!(t->flags & tl::FLAG_DEFAULT_CONSTRUCTOR));
assert(parser_type == 1);
if (!(tree_type->flags & tl::FLAG_BARE)) {
if (is_type_bare(t)) {
if (field_name != "") {
std::fprintf(stderr, "Do not use non-bare fields with bare type %s\n", name.c_str());
// assert(false);
}
}
} else {
assert(is_type_bare(t));
}
std::string res_begin;
if (!field_name.empty()) {
res_begin = field_name + " = ";
}
std::string res;
assert(name != "#");
if (field_name.empty()) {
if (name == "Bool") {
return "env->CallObjectMethod(p, jni::BooleanGetValueMethodID)";
} else if (name == "Int32") {
return "env->CallObjectMethod(p, jni::IntegerGetValueMethodID)";
} else if (name == "Int53" || name == "Int64") {
return "env->CallObjectMethod(p, jni::LongGetValueMethodID)";
} else if (name == "Double") {
return "env->CallObjectMethod(p, jni::DoubleGetValueMethodID)";
} else if (name == "String") {
return "jni::from_jstring(env, (jstring)p)";
} else if (name == "Bytes") {
return "jni::from_bytes(env, (jbyteArray)p)";
}
}
if (name == "Bool") {
res = "(env->GetBooleanField(p, " + field_name + "fieldID) != 0)";
} else if (name == "Int32") {
res = "env->GetIntField(p, " + field_name + "fieldID)";
} else if (name == "Int53" || name == "Int64") {
res = "env->GetLongField(p, " + field_name + "fieldID)";
} else if (name == "Double") {
res = "env->GetDoubleField(p, " + field_name + "fieldID)";
} else if (name == "String") {
res = "jni::fetch_string(env, p, " + field_name + "fieldID)";
} else if (name == "Bytes") {
res = "jni::from_bytes(env, (jbyteArray)jni::fetch_object(env, p, " + field_name + "fieldID))";
} else if (name == "Vector") {
const tl::tl_tree_type *child = static_cast<const tl::tl_tree_type *>(tree_type->children[0]);
res = gen_vector_fetch(field_name, child, vars, parser_type);
} else {
if (field_name == "") {
return gen_main_class_name(tree_type->type) + "::fetch(env, p)";
}
res = "jni::fetch_tl_object<" + gen_main_class_name(tree_type->type) + ">(env, jni::fetch_object(env, p, " +
field_name + "fieldID));";
}
return res_begin + res;
}
std::string TD_TL_writer_jni_cpp::gen_field_fetch(int field_num, const tl::arg &a,
std::vector<tl::var_description> &vars, bool flat,
int parser_type) const {
assert(parser_type >= 0);
std::string field_name = (parser_type == 0 ? (field_num == 0 ? ": " : ", ") : "res->") + gen_field_name(a.name);
assert(a.exist_var_num == -1);
if (a.type->get_type() == tl::NODE_TYPE_VAR_TYPE) {
assert(parser_type == 1);
const tl::tl_tree_var_type *t = static_cast<const tl::tl_tree_var_type *>(a.type);
assert(a.flags == tl::FLAG_EXCL);
assert(a.var_num == -1);
assert(t->var_num >= 0);
assert(vars[t->var_num].is_type);
assert(!vars[t->var_num].is_stored);
vars[t->var_num].is_stored = true;
assert(false && "not supported");
return " " + field_name + " = " + gen_base_function_class_name() + "::fetch(env, p);\n";
}
assert(!(a.flags & tl::FLAG_EXCL));
assert(!(a.flags & tl::FLAG_OPT_VAR));
if (flat) {
// TODO
// return gen_field_fetch(const tl::arg &a, std::vector<tl::var_description> &vars, int num, bool flat);
}
assert(a.var_num == -1);
assert(a.type->get_type() == tl::NODE_TYPE_TYPE);
const tl::tl_tree_type *tree_type = static_cast<tl::tl_tree_type *>(a.type);
assert(parser_type != 0);
return " " + gen_type_fetch(field_name, tree_type, vars, parser_type) + ";\n";
}
std::string TD_TL_writer_jni_cpp::get_pretty_field_name(std::string field_name) const {
return gen_java_field_name(TD_TL_writer_cpp::get_pretty_field_name(field_name));
}
std::string TD_TL_writer_jni_cpp::get_pretty_class_name(std::string class_name) const {
if (class_name == "vector") {
return "Array";
}
return gen_basic_java_class_name(class_name);
}
std::string TD_TL_writer_jni_cpp::gen_vector_store(const std::string &field_name, const tl::tl_tree_type *t,
const std::vector<tl::var_description> &vars,
int storer_type) const {
if (storer_type == 1) {
return TD_TL_writer_cpp::gen_vector_store(field_name, t, vars, storer_type);
}
std::string vector_type = gen_type_name(t);
if (vector_type == "bool") {
assert(false); // TODO
}
if (vector_type == "std::int32_t" || vector_type == "std::int64_t" || vector_type == "double" ||
vector_type == string_type || vector_type.compare(0, 11, "std::vector") == 0 ||
vector_type.compare(0, 10, "object_ptr") == 0) {
return "{ "
"auto arr_tmp_ = jni::store_vector(env, " +
field_name +
"); "
"if (arr_tmp_) { "
"env->SetObjectField(s, " +
field_name +
"fieldID, arr_tmp_); "
"env->DeleteLocalRef(arr_tmp_); "
"} }";
}
if (vector_type == bytes_type) {
std::fprintf(stderr, "Vector of Bytes is not supported\n");
assert(false);
}
assert(false);
return "";
}
std::string TD_TL_writer_jni_cpp::gen_type_store(const std::string &field_name, const tl::tl_tree_type *tree_type,
const std::vector<tl::var_description> &vars, int storer_type) const {
const tl::tl_type *t = tree_type->type;
const std::string &name = t->name;
assert(!field_name.empty());
assert(!(t->flags & tl::FLAG_DEFAULT_CONSTRUCTOR));
if (!(tree_type->flags & tl::FLAG_BARE)) {
if (storer_type == 0) {
if (is_type_bare(t)) {
std::fprintf(stderr, "Do not use non-bare fields with bare type %s\n", name.c_str());
// assert(false);
}
}
} else {
assert(is_type_bare(t));
}
std::string res;
if (name == "Int32" || name == "Int53" || name == "Int64" || name == "Double" || name == "Bool" || name == "String") {
if (storer_type == 1) {
res = "s.store_field(\"" + get_pretty_field_name(field_name) + "\", " + field_name + ");";
} else if (name == "Bool") {
res = "env->SetBooleanField(s, " + field_name + "fieldID, " + field_name + ");";
} else if (name == "Int32") {
res = "env->SetIntField(s, " + field_name + "fieldID, " + field_name + ");";
} else if (name == "Int53" || name == "Int64") {
res = "env->SetLongField(s, " + field_name + "fieldID, " + field_name + ");";
} else if (name == "Double") {
res = "env->SetDoubleField(s, " + field_name + "fieldID, " + field_name + ");";
} else if (name == "String") {
res = "{ jstring nextString = jni::to_jstring(env, " + field_name +
"); if (nextString) { env->SetObjectField(s, " + field_name +
"fieldID, nextString); env->DeleteLocalRef(nextString); } }";
} else {
assert(false);
}
} else if (name == "Bytes") {
if (storer_type == 1) {
res = "s.store_bytes_field(\"" + get_pretty_field_name(field_name) + "\", " + field_name + ");";
} else {
res = "{ jbyteArray nextBytes = jni::to_bytes(env, " + field_name +
"); if (nextBytes) { env->SetObjectField(s, " + field_name +
"fieldID, nextBytes); env->DeleteLocalRef(nextBytes); } }";
}
} else if (name == "Vector") {
const tl::tl_tree_type *child = static_cast<const tl::tl_tree_type *>(tree_type->children[0]);
res = gen_vector_store(field_name, child, vars, storer_type);
} else {
if (storer_type == 1) {
res = "if (" + field_name + " == nullptr) { s.store_field(\"" + get_pretty_field_name(field_name) +
"\", \"null\"); } else { " + field_name + "->store(s, \"" + get_pretty_field_name(field_name) + "\"); }";
} else {
res = "if (" + field_name + " != nullptr) { jobject next; " + field_name +
"->store(env, next); if (next) { env->SetObjectField(s, " + field_name +
"fieldID, next); env->DeleteLocalRef(next); } }";
}
assert(tree_type->children.empty());
}
return res;
}
std::string TD_TL_writer_jni_cpp::gen_field_store(const tl::arg &a, std::vector<tl::var_description> &vars, bool flat,
int storer_type) const {
std::string field_name = gen_field_name(a.name);
std::string shift = storer_type == 1 ? " " : " ";
assert(a.exist_var_num == -1);
if (a.type->get_type() == tl::NODE_TYPE_VAR_TYPE) {
const tl::tl_tree_var_type *t = static_cast<const tl::tl_tree_var_type *>(a.type);
assert(a.flags == tl::FLAG_EXCL);
assert(a.var_num == -1);
assert(t->var_num >= 0);
assert(!vars[t->var_num].is_stored);
vars[t->var_num].is_stored = true;
assert(vars[t->var_num].is_type);
assert(false && "not supported");
return shift + field_name + "->store(env, s);\n";
}
assert(!(a.flags & tl::FLAG_EXCL));
assert(!(a.flags & tl::FLAG_OPT_VAR));
if (flat) {
// TODO
// return gen_field_store(const tl::arg &a, std::vector<tl::var_description> &vars, bool flat, int storer_type);
}
assert(a.var_num == -1);
assert(a.type->get_type() == tl::NODE_TYPE_TYPE);
const tl::tl_tree_type *tree_type = static_cast<tl::tl_tree_type *>(a.type);
return shift + gen_type_store(field_name, tree_type, vars, storer_type) + "\n";
}
std::string TD_TL_writer_jni_cpp::gen_get_id(const std::string &class_name, std::int32_t id, bool is_proxy) const {
if (is_proxy) {
return "";
}
return "\nconst std::int32_t " + class_name + "::ID;\n";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_begin(const std::string &parser_name,
const std::string &class_name, int arity,
std::vector<tl::var_description> &vars,
int parser_type) const {
for (std::size_t i = 0; i < vars.size(); i++) {
assert(vars[i].is_stored == false);
}
std::string fetched_type = "object_ptr<" + class_name + "> ";
assert(arity == 0);
assert(parser_type != 0);
return "\n" + fetched_type + class_name + "::fetch(" + parser_name + " &p) {\n" +
(parser_type == -1 ? ""
: " if (p == nullptr) return nullptr;\n"
" " +
fetched_type + "res = make_object<" + class_name + ">();\n");
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_end(int field_num, const std::vector<tl::var_description> &vars,
int parser_type) const {
for (std::size_t i = 0; i < vars.size(); i++) {
assert(vars[i].is_stored);
}
assert(parser_type != 0);
if (parser_type == -1) {
return "}\n";
}
return " return res;\n"
"}\n";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_result_begin(const std::string &parser_name,
const std::string &class_name,
const tl::tl_tree *result) const {
return "\n" + class_name + "::ReturnType " + class_name + "::fetch_result(" + parser_name +
" &p) {\n"
" if (p == nullptr) return ReturnType();\n" +
" return ";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_result_end() const {
return ";\n"
"}\n";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_result_any_begin(const std::string &parser_name,
const std::string &class_name,
bool is_proxy) const {
return "";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_function_result_any_end(bool is_proxy) const {
return "";
}
std::string TD_TL_writer_jni_cpp::gen_store_function_begin(const std::string &storer_name,
const std::string &class_name, int arity,
std::vector<tl::var_description> &vars,
int storer_type) const {
for (std::size_t i = 0; i < vars.size(); i++) {
vars[i].is_stored = false;
}
if (storer_type == -1) {
return "";
}
assert(arity == 0);
return "\n"
"void " +
class_name + "::store(" + storer_name + " &s" +
std::string(storer_type <= 0 ? "" : ", const char *field_name") + ") const {\n" +
(storer_type <= 0 ? " s = env->AllocObject(Class);\n"
" if (!s) { return; }\n"
: " if (!LOG_IS_STRIPPED(ERROR)) {\n"
" s.store_class_begin(field_name, \"" +
get_pretty_class_name(class_name) + "\");\n");
}
std::string TD_TL_writer_jni_cpp::gen_fetch_switch_begin() const {
return " if (p == nullptr) { return nullptr; }\n"
" switch (env->CallIntMethod(p, jni::GetConstructorID)) {\n";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_switch_case(const tl::tl_combinator *t, int arity) const {
assert(arity == 0);
return " case " + gen_class_name(t->name) +
"::ID:\n"
" return " +
gen_class_name(t->name) + "::fetch(env, p);\n";
}
std::string TD_TL_writer_jni_cpp::gen_fetch_switch_end() const {
return " default:\n"
" UNREACHABLE();\n"
" return nullptr;\n"
" }\n";
}
std::string TD_TL_writer_jni_cpp::gen_java_field_name(std::string name) const {
std::string result;
bool next_to_upper = false;
for (std::size_t i = 0; i < name.size(); i++) {
if (!is_alnum(name[i])) {
next_to_upper = true;
continue;
}
if (next_to_upper) {
result += to_upper(name[i]);
next_to_upper = false;
} else {
result += name[i];
}
}
return result;
}
std::string TD_TL_writer_jni_cpp::gen_basic_java_class_name(std::string name) const {
std::string result;
bool next_to_upper = true;
for (std::size_t i = 0; i < name.size(); i++) {
if (!is_alnum(name[i])) {
next_to_upper = true;
continue;
}
if (next_to_upper) {
result += to_upper(name[i]);
next_to_upper = false;
} else {
result += name[i];
}
}
return result;
}
std::string TD_TL_writer_jni_cpp::gen_java_class_name(std::string name) const {
return "(PSLICE() << package_name << \"/TdApi$" + gen_basic_java_class_name(name) + "\").c_str()";
}
std::string TD_TL_writer_jni_cpp::gen_type_signature(const tl::tl_tree_type *tree_type) const {
const tl::tl_type *t = tree_type->type;
const std::string &name = t->name;
assert(name != "#");
assert(name != gen_base_tl_class_name());
if (name == "Bool") {
return "Z";
} else if (name == "Int32") {
return "I";
} else if (name == "Int53" || name == "Int64") {
return "J";
} else if (name == "Double") {
return "D";
} else if (name == "String") {
return "Ljava/lang/String;";
} else if (name == "Bytes") {
return "[B";
} else if (name == "Vector") {
const tl::tl_tree_type *child = static_cast<const tl::tl_tree_type *>(tree_type->children[0]);
return "[" + gen_type_signature(child);
} else {
return "L%PACKAGE_NAME%/TdApi$" + gen_basic_java_class_name(gen_main_class_name(t)) + ";";
}
assert(false);
return "";
}
std::string TD_TL_writer_jni_cpp::gen_additional_function(const std::string &function_name, const tl::tl_combinator *t,
bool is_function) const {
assert(function_name == "init_jni_vars");
std::string class_name = gen_class_name(t->name);
std::string class_name_class = "Class";
std::string res =
"\n"
"void " +
class_name + "::" + function_name +
"(JNIEnv *env, const char *package_name) {\n"
" " +
class_name_class + " = jni::get_jclass(env, " + gen_java_class_name(gen_class_name(t->name)) + ");\n";
if (t->args.size()) {
for (std::size_t i = 0; i < t->args.size(); i++) {
const tl::arg &a = t->args[i];
assert(a.type->get_type() == tl::NODE_TYPE_TYPE);
const tl::tl_tree_type *tree_type = static_cast<tl::tl_tree_type *>(a.type);
std::string field_name = gen_field_name(a.name);
assert(field_name.size());
std::string java_field_name = gen_java_field_name(std::string(field_name, 0, field_name.size() - 1));
std::string type_signature = gen_type_signature(tree_type);
if (type_signature.find("%PACKAGE_NAME%") == std::string::npos) {
type_signature = '"' + type_signature + '"';
} else {
std::string new_type_signature = "(PSLICE()";
std::size_t pos = type_signature.find("%PACKAGE_NAME%");
while (pos != std::string::npos) {
new_type_signature += " << \"" + type_signature.substr(0, pos) + "\" << package_name";
type_signature = type_signature.substr(pos + 14);
pos = type_signature.find("%PACKAGE_NAME%");
}
if (!type_signature.empty()) {
new_type_signature += " << \"" + type_signature + "\"";
}
type_signature = new_type_signature + ").c_str()";
}
res += " " + field_name + "fieldID = jni::get_field_id(env, " + class_name_class + ", \"" + java_field_name +
"\", " + type_signature + ");\n";
}
}
res += "}\n";
return res;
}
std::string TD_TL_writer_jni_cpp::gen_additional_proxy_function_begin(const std::string &function_name,
const tl::tl_type *type,
const std::string &class_name, int arity,
bool is_function) const {
assert(function_name == "init_jni_vars");
assert(arity == 0);
return "\n"
"void " +
class_name + "::" + function_name +
"(JNIEnv *env, const char *package_name) {\n"
" Class = jni::get_jclass(env, " +
gen_java_class_name(class_name) + ");\n";
}
std::string TD_TL_writer_jni_cpp::gen_additional_proxy_function_case(const std::string &function_name,
const tl::tl_type *type,
const std::string &class_name, int arity) const {
assert(function_name == "init_jni_vars");
assert(arity == 0);
return " " + class_name + "::" + function_name + "(env, package_name);\n";
}
std::string TD_TL_writer_jni_cpp::gen_additional_proxy_function_case(const std::string &function_name,
const tl::tl_type *type,
const tl::tl_combinator *t, int arity,
bool is_function) const {
assert(function_name == "init_jni_vars");
assert(arity == 0);
return " " + gen_class_name(t->name) + "::" + function_name + "(env, package_name);\n";
}
std::string TD_TL_writer_jni_cpp::gen_additional_proxy_function_end(const std::string &function_name,
const tl::tl_type *type, bool is_function) const {
assert(function_name == "init_jni_vars");
return "}\n";
}
} // namespace td