You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@thrift.apache.org by ns...@apache.org on 2016/09/25 16:42:55 UTC
[06/55] [abbrv] [partial] thrift git commit: THRIFT-2835 Add
possibility to distribute generators separately from thrift core,
and load them dynamically
http://git-wip-us.apache.org/repos/asf/thrift/blob/052abc39/compiler/cpp/src/thrift/generate/t_json_generator.cc
----------------------------------------------------------------------
diff --git a/compiler/cpp/src/thrift/generate/t_json_generator.cc b/compiler/cpp/src/thrift/generate/t_json_generator.cc
new file mode 100644
index 0000000..36e9216
--- /dev/null
+++ b/compiler/cpp/src/thrift/generate/t_json_generator.cc
@@ -0,0 +1,727 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ * Contains some contributions under the Thrift Software License.
+ * Please see doc/old-thrift-license.txt in the Thrift distribution for
+ * details.
+ */
+
+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <limits>
+
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sstream>
+
+#include "thrift/platform.h"
+#include "thrift/generate/t_generator.h"
+
+using std::map;
+using std::ofstream;
+using std::ostream;
+using std::ostringstream;
+using std::string;
+using std::stringstream;
+using std::vector;
+using std::stack;
+
+static const string endl = "\n";
+static const string quot = "\"";
+static const bool NO_INDENT = false;
+static const bool FORCE_STRING = true;
+
+class t_json_generator : public t_generator {
+public:
+ t_json_generator(t_program* program,
+ const std::map<std::string, std::string>& parsed_options,
+ const std::string& option_string)
+ : t_generator(program) {
+ (void)option_string;
+ std::map<std::string, std::string>::const_iterator iter;
+
+ should_merge_includes_ = false;
+ for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
+ if( iter->first.compare("merge") == 0) {
+ should_merge_includes_ = true;
+ } else {
+ throw "unknown option json:" + iter->first;
+ }
+ }
+
+ out_dir_base_ = "gen-json";
+ }
+
+ virtual ~t_json_generator() {}
+
+ /**
+ * Init and close methods
+ */
+
+ void init_generator();
+ void close_generator();
+
+ void generate_typedef(t_typedef* ttypedef);
+ void generate_enum(t_enum* tenum);
+ void generate_program();
+ void generate_function(t_function* tfunc);
+ void generate_field(t_field* field);
+
+ void generate_service(t_service* tservice);
+ void generate_struct(t_struct* tstruct);
+
+private:
+ bool should_merge_includes_;
+
+ std::ofstream f_json_;
+ std::stack<bool> comma_needed_;
+
+ template <typename T>
+ string number_to_string(T t) {
+ std::ostringstream out;
+ out.imbue(std::locale::classic());
+ out.precision(std::numeric_limits<T>::digits10);
+ out << t;
+ return out.str();
+ }
+
+ template <typename T>
+ void write_number(T n) {
+ f_json_ << number_to_string(n);
+ }
+
+ string get_type_name(t_type* ttype);
+ string get_qualified_name(t_type* ttype);
+
+ void start_object(bool should_indent = true);
+ void start_array();
+ void end_object();
+ void end_array();
+ void write_comma_if_needed();
+ void indicate_comma_needed();
+ string escape_json_string(const string& input);
+ string json_str(const string& str);
+ void merge_includes(t_program*);
+
+ void generate_constant(t_const* con);
+
+ void write_type_spec_entry(const char* name, t_type* ttype);
+ void write_type_spec_object(const char* name, t_type* ttype);
+ void write_type_spec(t_type* ttype);
+ void write_string(const string& value);
+ void write_value(t_type* tvalue);
+ void write_const_value(t_const_value* value, bool force_string = false);
+ void write_key_and(string key);
+ void write_key_and_string(string key, string val);
+ void write_key_and_integer(string key, int val);
+ void write_key_and_bool(string key, bool val);
+};
+
+void t_json_generator::init_generator() {
+ MKDIR(get_out_dir().c_str());
+
+ string f_json_name = get_out_dir() + program_->get_name() + ".json";
+ f_json_.open(f_json_name.c_str());
+
+ // Merge all included programs into this one so we can output one big file.
+ if (should_merge_includes_) {
+ merge_includes(program_);
+ }
+}
+
+string t_json_generator::escape_json_string(const string& input) {
+ std::ostringstream ss;
+ for (std::string::const_iterator iter = input.begin(); iter != input.end(); iter++) {
+ switch (*iter) {
+ case '\\':
+ ss << "\\\\";
+ break;
+ case '"':
+ ss << "\\\"";
+ break;
+ case '/':
+ ss << "\\/";
+ break;
+ case '\b':
+ ss << "\\b";
+ break;
+ case '\f':
+ ss << "\\f";
+ break;
+ case '\n':
+ ss << "\\n";
+ break;
+ case '\r':
+ ss << "\\r";
+ break;
+ case '\t':
+ ss << "\\t";
+ break;
+ default:
+ ss << *iter;
+ break;
+ }
+ }
+ return ss.str();
+}
+
+void t_json_generator::start_object(bool should_indent) {
+ f_json_ << (should_indent ? indent() : "") << "{" << endl;
+ indent_up();
+ comma_needed_.push(false);
+}
+
+void t_json_generator::start_array() {
+ f_json_ << "[" << endl;
+ indent_up();
+ comma_needed_.push(false);
+}
+
+void t_json_generator::write_comma_if_needed() {
+ if (comma_needed_.top()) {
+ f_json_ << "," << endl;
+ }
+}
+
+void t_json_generator::indicate_comma_needed() {
+ comma_needed_.pop();
+ comma_needed_.push(true);
+}
+
+void t_json_generator::write_key_and(string key) {
+ write_comma_if_needed();
+ indent(f_json_) << json_str(key) << ": ";
+ indicate_comma_needed();
+}
+
+void t_json_generator::write_key_and_integer(string key, int val) {
+ write_comma_if_needed();
+ indent(f_json_) << json_str(key) << ": " << number_to_string(val);
+ indicate_comma_needed();
+}
+
+void t_json_generator::write_key_and_string(string key, string val) {
+ write_comma_if_needed();
+ indent(f_json_) << json_str(key) << ": " << json_str(val);
+ indicate_comma_needed();
+}
+
+void t_json_generator::write_key_and_bool(string key, bool val) {
+ write_comma_if_needed();
+ indent(f_json_) << json_str(key) << ": " << (val ? "true" : "false");
+ indicate_comma_needed();
+}
+
+void t_json_generator::end_object() {
+ indent_down();
+ f_json_ << endl << indent() << "}";
+ comma_needed_.pop();
+}
+
+void t_json_generator::end_array() {
+ indent_down();
+ if (comma_needed_.top()) {
+ f_json_ << endl;
+ }
+ indent(f_json_) << "]";
+ comma_needed_.pop();
+}
+
+void t_json_generator::write_type_spec_object(const char* name, t_type* ttype) {
+ ttype = ttype->get_true_type();
+ if (ttype->is_struct() || ttype->is_xception() || ttype->is_container()) {
+ write_key_and(name);
+ start_object(NO_INDENT);
+ write_key_and("typeId");
+ write_type_spec(ttype);
+ end_object();
+ }
+}
+
+void t_json_generator::write_type_spec_entry(const char* name, t_type* ttype) {
+ write_key_and(name);
+ write_type_spec(ttype);
+}
+
+void t_json_generator::write_type_spec(t_type* ttype) {
+ ttype = ttype->get_true_type();
+
+ write_string(get_type_name(ttype));
+
+ if (ttype->is_struct() || ttype->is_xception()) {
+ write_key_and_string("class", get_qualified_name(ttype));
+ } else if (ttype->is_map()) {
+ t_type* ktype = ((t_map*)ttype)->get_key_type();
+ t_type* vtype = ((t_map*)ttype)->get_val_type();
+ write_key_and_string("keyTypeId", get_type_name(ktype));
+ write_key_and_string("valueTypeId", get_type_name(vtype));
+ write_type_spec_object("keyType", ktype);
+ write_type_spec_object("valueType", vtype);
+ } else if (ttype->is_list() || ttype->is_set()) {
+ t_type* etype = ((t_list*)ttype)->get_elem_type();
+ write_key_and_string("elemTypeId", get_type_name(etype));
+ write_type_spec_object("elemType", etype);
+ }
+}
+
+void t_json_generator::close_generator() {
+ f_json_ << endl;
+ f_json_.close();
+}
+
+void t_json_generator::merge_includes(t_program* program) {
+ vector<t_program*> includes = program->get_includes();
+ vector<t_program*>::iterator inc_iter;
+ for (inc_iter = includes.begin(); inc_iter != includes.end(); ++inc_iter) {
+ t_program* include = *inc_iter;
+ // recurse in case we get crazy
+ merge_includes(include);
+ // merge enums
+ vector<t_enum*> enums = include->get_enums();
+ vector<t_enum*>::iterator en_iter;
+ for (en_iter = enums.begin(); en_iter != enums.end(); ++en_iter) {
+ program->add_enum(*en_iter);
+ }
+ // merge typedefs
+ vector<t_typedef*> typedefs = include->get_typedefs();
+ vector<t_typedef*>::iterator td_iter;
+ for (td_iter = typedefs.begin(); td_iter != typedefs.end(); ++td_iter) {
+ program->add_typedef(*td_iter);
+ }
+ // merge structs
+ vector<t_struct*> objects = include->get_objects();
+ vector<t_struct*>::iterator o_iter;
+ for (o_iter = objects.begin(); o_iter != objects.end(); ++o_iter) {
+ program->add_struct(*o_iter);
+ }
+ // merge constants
+ vector<t_const*> consts = include->get_consts();
+ vector<t_const*>::iterator c_iter;
+ for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
+ program->add_const(*c_iter);
+ }
+
+ // merge services
+ vector<t_service*> services = include->get_services();
+ vector<t_service*>::iterator sv_iter;
+ for (sv_iter = services.begin(); sv_iter != services.end(); ++sv_iter) {
+ program->add_service(*sv_iter);
+ }
+ }
+}
+
+void t_json_generator::generate_program() {
+
+ init_generator();
+
+ start_object();
+ write_key_and_string("name", program_->get_name());
+ if (program_->has_doc()) {
+ write_key_and_string("doc", program_->get_doc());
+ }
+
+ // When merging includes, the "namespaces" and "includes" sections
+ // become ambiguous, so just skip them.
+ if (!should_merge_includes_) {
+ // Generate namespaces
+ write_key_and("namespaces");
+ start_object(NO_INDENT);
+ const map<string, string>& namespaces = program_->get_namespaces();
+ map<string, string>::const_iterator ns_it;
+ for (ns_it = namespaces.begin(); ns_it != namespaces.end(); ++ns_it) {
+ write_key_and_string(ns_it->first, ns_it->second);
+ indicate_comma_needed();
+ }
+ end_object();
+
+ // Generate includes
+ write_key_and("includes");
+ start_array();
+ const vector<t_program*> includes = program_->get_includes();
+ vector<t_program*>::const_iterator inc_it;
+ for (inc_it = includes.begin(); inc_it != includes.end(); ++inc_it) {
+ write_comma_if_needed();
+ write_string((*inc_it)->get_name());
+ indicate_comma_needed();
+ }
+ end_array();
+ }
+
+ // Generate enums
+ write_key_and("enums");
+ start_array();
+ vector<t_enum*> enums = program_->get_enums();
+ vector<t_enum*>::iterator en_iter;
+ for (en_iter = enums.begin(); en_iter != enums.end(); ++en_iter) {
+ write_comma_if_needed();
+ generate_enum(*en_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ // Generate typedefs
+ write_key_and("typedefs");
+ start_array();
+ vector<t_typedef*> typedefs = program_->get_typedefs();
+ vector<t_typedef*>::iterator td_iter;
+ for (td_iter = typedefs.begin(); td_iter != typedefs.end(); ++td_iter) {
+ write_comma_if_needed();
+ generate_typedef(*td_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ // Generate structs, exceptions, and unions in declared order
+ write_key_and("structs");
+ start_array();
+ vector<t_struct*> objects = program_->get_objects();
+ vector<t_struct*>::iterator o_iter;
+ for (o_iter = objects.begin(); o_iter != objects.end(); ++o_iter) {
+ write_comma_if_needed();
+ if ((*o_iter)->is_xception()) {
+ generate_xception(*o_iter);
+ } else {
+ generate_struct(*o_iter);
+ }
+ indicate_comma_needed();
+ }
+ end_array();
+
+ // Generate constants
+ write_key_and("constants");
+ start_array();
+ vector<t_const*> consts = program_->get_consts();
+ vector<t_const*>::iterator c_iter;
+ for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
+ write_comma_if_needed();
+ generate_constant(*c_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ // Generate services
+ write_key_and("services");
+ start_array();
+ vector<t_service*> services = program_->get_services();
+ vector<t_service*>::iterator sv_iter;
+ for (sv_iter = services.begin(); sv_iter != services.end(); ++sv_iter) {
+ write_comma_if_needed();
+ generate_service(*sv_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ end_object();
+
+ // Close the generator
+ close_generator();
+}
+
+void t_json_generator::generate_typedef(t_typedef* ttypedef) {
+ start_object();
+ write_key_and_string("name", get_qualified_name(ttypedef));
+ write_key_and_string("typeId", get_type_name(ttypedef->get_true_type()));
+ write_type_spec_object("type", ttypedef->get_true_type());
+ if (ttypedef->has_doc()) {
+ write_key_and_string("doc", ttypedef->get_doc());
+ }
+ end_object();
+}
+
+void t_json_generator::write_string(const string& value) {
+ f_json_ << quot << escape_json_string(value) << quot;
+}
+
+void t_json_generator::write_const_value(t_const_value* value, bool should_force_string) {
+
+ switch (value->get_type()) {
+
+ case t_const_value::CV_IDENTIFIER:
+ case t_const_value::CV_INTEGER:
+ if (should_force_string) {
+ write_string(number_to_string(value->get_integer()));
+ } else {
+ write_number(value->get_integer());
+ }
+ break;
+
+ case t_const_value::CV_DOUBLE:
+ if (should_force_string) {
+ write_string(number_to_string(value->get_double()));
+ } else {
+ write_number(value->get_double());
+ }
+ break;
+
+ case t_const_value::CV_STRING:
+ write_string(value->get_string());
+ break;
+
+ case t_const_value::CV_LIST: {
+ start_array();
+ std::vector<t_const_value*> list = value->get_list();
+ std::vector<t_const_value*>::iterator lit;
+ for (lit = list.begin(); lit != list.end(); ++lit) {
+ write_comma_if_needed();
+ f_json_ << indent();
+ write_const_value(*lit);
+ indicate_comma_needed();
+ }
+ end_array();
+ break;
+ }
+
+ case t_const_value::CV_MAP: {
+ start_object(NO_INDENT);
+ std::map<t_const_value*, t_const_value*> map = value->get_map();
+ std::map<t_const_value*, t_const_value*>::iterator mit;
+ for (mit = map.begin(); mit != map.end(); ++mit) {
+ write_comma_if_needed();
+ f_json_ << indent();
+ // JSON objects only allow string keys
+ write_const_value(mit->first, FORCE_STRING);
+ f_json_ << ": ";
+ write_const_value(mit->second);
+ indicate_comma_needed();
+ }
+ end_object();
+ break;
+ }
+
+ default:
+ f_json_ << "null";
+ break;
+ }
+}
+
+string t_json_generator::json_str(const string& str) {
+ return quot + escape_json_string(str) + quot;
+}
+
+void t_json_generator::generate_constant(t_const* con) {
+ start_object();
+
+ write_key_and_string("name", con->get_name());
+ write_key_and_string("typeId", get_type_name(con->get_type()));
+ write_type_spec_object("type", con->get_type());
+
+ if (con->has_doc()) {
+ write_key_and_string("doc", con->get_doc());
+ }
+
+ write_key_and("value");
+ write_const_value(con->get_value());
+
+ end_object();
+}
+
+void t_json_generator::generate_enum(t_enum* tenum) {
+ start_object();
+
+ write_key_and_string("name", tenum->get_name());
+
+ if (tenum->has_doc()) {
+ write_key_and_string("doc", tenum->get_doc());
+ }
+
+ write_key_and("members");
+ start_array();
+ vector<t_enum_value*> values = tenum->get_constants();
+ vector<t_enum_value*>::iterator val_iter;
+ for (val_iter = values.begin(); val_iter != values.end(); ++val_iter) {
+ write_comma_if_needed();
+ t_enum_value* val = (*val_iter);
+ start_object();
+ write_key_and_string("name", val->get_name());
+ write_key_and_integer("value", val->get_value());
+ if (val->has_doc()) {
+ write_key_and_string("doc", val->get_doc());
+ }
+ end_object();
+ indicate_comma_needed();
+ }
+ end_array();
+
+ end_object();
+}
+
+void t_json_generator::generate_struct(t_struct* tstruct) {
+ start_object();
+
+ write_key_and_string("name", tstruct->get_name());
+
+ if (tstruct->has_doc()) {
+ write_key_and_string("doc", tstruct->get_doc());
+ }
+
+ write_key_and_bool("isException", tstruct->is_xception());
+
+ write_key_and_bool("isUnion", tstruct->is_union());
+
+ write_key_and("fields");
+ start_array();
+ vector<t_field*> members = tstruct->get_members();
+ vector<t_field*>::iterator mem_iter;
+ for (mem_iter = members.begin(); mem_iter != members.end(); mem_iter++) {
+ write_comma_if_needed();
+ generate_field(*mem_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ end_object();
+}
+
+void t_json_generator::generate_service(t_service* tservice) {
+ start_object();
+
+ write_key_and_string("name", get_qualified_name(tservice));
+
+ if (tservice->get_extends()) {
+ write_key_and_string("extends", get_qualified_name(tservice->get_extends()));
+ }
+
+ if (tservice->has_doc()) {
+ write_key_and_string("doc", tservice->get_doc());
+ }
+
+ write_key_and("functions");
+ start_array();
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator fn_iter = functions.begin();
+ for (; fn_iter != functions.end(); fn_iter++) {
+ write_comma_if_needed();
+ generate_function(*fn_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ end_object();
+}
+
+void t_json_generator::generate_function(t_function* tfunc) {
+ start_object();
+
+ write_key_and_string("name", tfunc->get_name());
+
+ write_key_and_string("returnTypeId", get_type_name(tfunc->get_returntype()));
+ write_type_spec_object("returnType", tfunc->get_returntype());
+
+ write_key_and_bool("oneway", tfunc->is_oneway());
+
+ if (tfunc->has_doc()) {
+ write_key_and_string("doc", tfunc->get_doc());
+ }
+
+ write_key_and("arguments");
+ start_array();
+ vector<t_field*> members = tfunc->get_arglist()->get_members();
+ vector<t_field*>::iterator mem_iter = members.begin();
+ for (; mem_iter != members.end(); mem_iter++) {
+ write_comma_if_needed();
+ generate_field(*mem_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ write_key_and("exceptions");
+ start_array();
+ vector<t_field*> excepts = tfunc->get_xceptions()->get_members();
+ vector<t_field*>::iterator ex_iter = excepts.begin();
+ for (; ex_iter != excepts.end(); ex_iter++) {
+ write_comma_if_needed();
+ generate_field(*ex_iter);
+ indicate_comma_needed();
+ }
+ end_array();
+
+ end_object();
+}
+
+void t_json_generator::generate_field(t_field* field) {
+ start_object();
+
+ write_key_and_integer("key", field->get_key());
+ write_key_and_string("name", field->get_name());
+ write_key_and_string("typeId", get_type_name(field->get_type()));
+ write_type_spec_object("type", field->get_type());
+
+ if (field->has_doc()) {
+ write_key_and_string("doc", field->get_doc());
+ }
+
+ write_key_and("required");
+ switch (field->get_req()) {
+ case t_field::T_REQUIRED:
+ write_string("required");
+ break;
+ case t_field::T_OPT_IN_REQ_OUT:
+ write_string("req_out");
+ break;
+ default:
+ write_string("optional");
+ break;
+ }
+
+ if (field->get_value()) {
+ write_key_and("default");
+ write_const_value(field->get_value());
+ }
+
+ end_object();
+}
+
+string t_json_generator::get_type_name(t_type* ttype) {
+ ttype = ttype->get_true_type();
+ if (ttype->is_list()) {
+ return "list";
+ }
+ if (ttype->is_set()) {
+ return "set";
+ }
+ if (ttype->is_map()) {
+ return "map";
+ }
+ if (ttype->is_enum()) {
+ return "i32";
+ }
+ if (ttype->is_struct()) {
+ return ((t_struct*)ttype)->is_union() ? "union" : "struct";
+ }
+ if (ttype->is_xception()) {
+ return "exception";
+ }
+ if (ttype->is_base_type()) {
+ t_base_type* tbasetype = (t_base_type*)ttype;
+ return tbasetype->is_binary() ? "binary" : t_base_type::t_base_name(tbasetype->get_base());
+ }
+
+ return "(unknown)";
+}
+
+string t_json_generator::get_qualified_name(t_type* ttype) {
+ if (should_merge_includes_ || ttype->get_program() == program_) {
+ return ttype->get_name();
+ }
+ return ttype->get_program()->get_name() + "." + ttype->get_name();
+}
+
+THRIFT_REGISTER_GENERATOR(json,
+ "JSON",
+ " merge: Generate output with included files merged\n")
http://git-wip-us.apache.org/repos/asf/thrift/blob/052abc39/compiler/cpp/src/thrift/generate/t_lua_generator.cc
----------------------------------------------------------------------
diff --git a/compiler/cpp/src/thrift/generate/t_lua_generator.cc b/compiler/cpp/src/thrift/generate/t_lua_generator.cc
new file mode 100644
index 0000000..97b8aa3
--- /dev/null
+++ b/compiler/cpp/src/thrift/generate/t_lua_generator.cc
@@ -0,0 +1,1138 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <sstream>
+#include "thrift/platform.h"
+#include "thrift/generate/t_oop_generator.h"
+
+using std::ofstream;
+using std::string;
+using std::vector;
+using std::map;
+
+static const string endl = "\n"; // avoid ostream << std::endl flushes
+
+/**
+ * LUA code generator.
+ *
+ */
+class t_lua_generator : public t_oop_generator {
+public:
+ t_lua_generator(t_program* program,
+ const std::map<std::string, std::string>& parsed_options,
+ const std::string& option_string)
+ : t_oop_generator(program) {
+ (void)option_string;
+ std::map<std::string, std::string>::const_iterator iter;
+
+ gen_requires_ = true;
+ for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
+ if( iter->first.compare("omit_requires") == 0) {
+ gen_requires_ = false;
+ } else {
+ throw "unknown option lua:" + iter->first;
+ }
+ }
+
+ out_dir_base_ = "gen-lua";
+ }
+
+ /**
+ * Init and close methods
+ */
+ void init_generator();
+ void close_generator();
+
+ /**
+ * Program-level generation functions
+ */
+ void generate_typedef(t_typedef* ttypedef);
+ void generate_enum(t_enum* tenum);
+ void generate_const(t_const* tconst);
+ void generate_struct(t_struct* tstruct);
+ void generate_xception(t_struct* txception);
+ void generate_service(t_service* tservice);
+
+ std::string render_const_value(t_type* type, t_const_value* value);
+
+private:
+ /**
+ * True iff we should generate lua require statements.
+ */
+ bool gen_requires_;
+
+ /**
+ * Struct-level generation functions
+ */
+ void generate_lua_struct_definition(std::ofstream& out,
+ t_struct* tstruct,
+ bool is_xception = false);
+ void generate_lua_struct_reader(std::ofstream& out, t_struct* tstruct);
+ void generate_lua_struct_writer(std::ofstream& out, t_struct* tstruct);
+
+ /**
+ * Service-level generation functions
+ */
+ void generate_service_client(std::ofstream& out, t_service* tservice);
+ void generate_service_interface(std::ofstream& out, t_service* tservice);
+ void generate_service_processor(std::ofstream& out, t_service* tservice);
+ void generate_process_function(std::ofstream& out, t_service* tservice, t_function* tfunction);
+ void generate_service_helpers(ofstream& out, t_service* tservice);
+ void generate_function_helpers(ofstream& out, t_function* tfunction);
+
+ /**
+ * Deserialization (Read)
+ */
+ void generate_deserialize_field(std::ofstream& out,
+ t_field* tfield,
+ bool local,
+ std::string prefix = "");
+
+ void generate_deserialize_struct(std::ofstream& out,
+ t_struct* tstruct,
+ bool local,
+ std::string prefix = "");
+
+ void generate_deserialize_container(std::ofstream& out,
+ t_type* ttype,
+ bool local,
+ std::string prefix = "");
+
+ void generate_deserialize_set_element(std::ofstream& out, t_set* tset, std::string prefix = "");
+
+ void generate_deserialize_map_element(std::ofstream& out, t_map* tmap, std::string prefix = "");
+
+ void generate_deserialize_list_element(std::ofstream& out,
+ t_list* tlist,
+ std::string prefix = "");
+
+ /**
+ * Serialization (Write)
+ */
+ void generate_serialize_field(std::ofstream& out, t_field* tfield, std::string prefix = "");
+
+ void generate_serialize_struct(std::ofstream& out, t_struct* tstruct, std::string prefix = "");
+
+ void generate_serialize_container(std::ofstream& out, t_type* ttype, std::string prefix = "");
+
+ void generate_serialize_map_element(std::ofstream& out,
+ t_map* tmap,
+ std::string kiter,
+ std::string viter);
+
+ void generate_serialize_set_element(std::ofstream& out, t_set* tmap, std::string iter);
+
+ void generate_serialize_list_element(std::ofstream& out, t_list* tlist, std::string iter);
+
+ /**
+ * Helper rendering functions
+ */
+ std::string lua_includes();
+ std::string function_signature(t_function* tfunction, std::string prefix = "");
+ std::string argument_list(t_struct* tstruct, std::string prefix = "");
+ std::string type_to_enum(t_type* ttype);
+ static std::string get_namespace(const t_program* program);
+
+ std::string autogen_comment() {
+ return std::string("--\n") + "-- Autogenerated by Thrift\n" + "--\n"
+ + "-- DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING\n" + "-- @"
+ "generated\n"
+ + "--\n";
+ }
+
+ /**
+ * File streams
+ */
+ std::ofstream f_types_;
+ std::ofstream f_consts_;
+ std::ofstream f_service_;
+};
+
+/**
+ * Init and close methods
+ */
+void t_lua_generator::init_generator() {
+ // Make output directory
+ string outdir = get_out_dir();
+ MKDIR(outdir.c_str());
+
+ // Make output files
+ string cur_namespace = get_namespace(program_);
+ string f_consts_name = outdir + cur_namespace + "constants.lua";
+ f_consts_.open(f_consts_name.c_str());
+ string f_types_name = outdir + cur_namespace + "ttypes.lua";
+ f_types_.open(f_types_name.c_str());
+
+ // Add headers
+ f_consts_ << autogen_comment() << lua_includes();
+ f_types_ << autogen_comment() << lua_includes();
+ if (gen_requires_) {
+ f_types_ << endl << "require '" << cur_namespace << "constants'";
+ }
+}
+
+void t_lua_generator::close_generator() {
+ // Close types file
+ f_types_.close();
+ f_consts_.close();
+}
+
+/**
+ * Generate a typedef (essentially a constant)
+ */
+void t_lua_generator::generate_typedef(t_typedef* ttypedef) {
+ f_types_ << endl << endl << indent() << ttypedef->get_symbolic() << " = "
+ << ttypedef->get_type()->get_name();
+}
+
+/**
+ * Generates code for an enumerated type (table)
+ */
+void t_lua_generator::generate_enum(t_enum* tenum) {
+ f_types_ << endl << endl << tenum->get_name() << " = {" << endl;
+
+ vector<t_enum_value*> constants = tenum->get_constants();
+ vector<t_enum_value*>::iterator c_iter;
+ for (c_iter = constants.begin(); c_iter != constants.end();) {
+ int32_t value = (*c_iter)->get_value();
+
+ f_types_ << " " << (*c_iter)->get_name() << " = " << value;
+ ++c_iter;
+ if (c_iter != constants.end()) {
+ f_types_ << ",";
+ }
+ f_types_ << endl;
+ }
+ f_types_ << "}";
+}
+
+/**
+ * Generate a constant (non-local) value
+ */
+void t_lua_generator::generate_const(t_const* tconst) {
+ t_type* type = tconst->get_type();
+ string name = tconst->get_name();
+ t_const_value* value = tconst->get_value();
+
+ f_consts_ << endl << endl << name << " = ";
+ f_consts_ << render_const_value(type, value);
+}
+
+/**
+ * Prints the value of a constant with the given type.
+ */
+string t_lua_generator::render_const_value(t_type* type, t_const_value* value) {
+ std::ostringstream out;
+
+ type = get_true_type(type);
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_STRING:
+ out << "'" << value->get_string() << "'";
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << (value->get_integer() > 0 ? "true" : "false");
+ break;
+ case t_base_type::TYPE_I8:
+ case t_base_type::TYPE_I16:
+ case t_base_type::TYPE_I32:
+ out << value->get_integer();
+ break;
+ case t_base_type::TYPE_I64:
+ out << "lualongnumber.new('" << value->get_string() << "')";
+ break;
+ case t_base_type::TYPE_DOUBLE:
+ if (value->get_type() == t_const_value::CV_INTEGER) {
+ out << value->get_integer();
+ } else {
+ out << value->get_double();
+ }
+ break;
+ default:
+ throw "compiler error: no const of base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << value->get_integer();
+ } else if (type->is_struct() || type->is_xception()) {
+ out << type->get_name() << " = {" << endl;
+ indent_up();
+
+ const vector<t_field*>& fields = ((t_struct*)type)->get_members();
+ vector<t_field*>::const_iterator f_iter;
+ const map<t_const_value*, t_const_value*>& val = value->get_map();
+ map<t_const_value*, t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end();) {
+ t_type* field_type = NULL;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ if ((*f_iter)->get_name() == v_iter->first->get_string()) {
+ field_type = (*f_iter)->get_type();
+ }
+ }
+ if (field_type == NULL) {
+ throw "type error: " + type->get_name() + " has no field " + v_iter->first->get_string();
+ }
+
+ indent(out);
+ out << render_const_value(g_type_string, v_iter->first);
+ out << " = ";
+ out << render_const_value(field_type, v_iter->second);
+ ++v_iter;
+ if (v_iter != val.end()) {
+ out << ",";
+ }
+ }
+
+ out << "}";
+ indent_down();
+ } else if (type->is_map()) {
+ out << type->get_name() << "{" << endl;
+ indent_up();
+
+ t_type* ktype = ((t_map*)type)->get_key_type();
+ t_type* vtype = ((t_map*)type)->get_val_type();
+
+ const map<t_const_value*, t_const_value*>& val = value->get_map();
+ map<t_const_value*, t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end();) {
+ indent(out) << "[" << render_const_value(ktype, v_iter->first)
+ << "] = " << render_const_value(vtype, v_iter->second);
+ ++v_iter;
+ if (v_iter != val.end()) {
+ out << ",";
+ }
+ out << endl;
+ }
+ indent_down();
+ indent(out) << "}";
+ } else if (type->is_list() || type->is_set()) {
+ t_type* etype;
+ if (type->is_list()) {
+ etype = ((t_list*)type)->get_elem_type();
+ } else {
+ etype = ((t_set*)type)->get_elem_type();
+ }
+ out << type->get_name() << " = {" << endl;
+ const vector<t_const_value*>& val = value->get_list();
+ vector<t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end();) {
+ indent(out);
+ out << "[" << render_const_value(etype, *v_iter) << "]";
+ if (type->is_set()) {
+ out << " = true";
+ } else {
+ out << " = false";
+ }
+ ++v_iter;
+ if (v_iter != val.end()) {
+ out << "," << endl;
+ }
+ }
+ out << "}";
+ }
+ return out.str();
+}
+
+/**
+ * Generate a thrift struct
+ */
+void t_lua_generator::generate_struct(t_struct* tstruct) {
+ generate_lua_struct_definition(f_types_, tstruct, false);
+}
+
+/**
+ * Generate a thrift exception
+ */
+void t_lua_generator::generate_xception(t_struct* txception) {
+ generate_lua_struct_definition(f_types_, txception, true);
+}
+
+/**
+ * Generate a thrift struct or exception (lua table)
+ */
+void t_lua_generator::generate_lua_struct_definition(ofstream& out,
+ t_struct* tstruct,
+ bool is_exception) {
+ vector<t_field*>::const_iterator m_iter;
+ const vector<t_field*>& members = tstruct->get_members();
+
+ indent(out) << endl << endl << tstruct->get_name();
+ if (is_exception) {
+ out << " = TException:new{" << endl << indent() << " __type = '" << tstruct->get_name() << "'";
+ if (members.size() > 0) {
+ out << ",";
+ }
+ out << endl;
+ } else {
+ out << " = __TObject:new{" << endl;
+ }
+ indent_up();
+ for (m_iter = members.begin(); m_iter != members.end();) {
+ indent(out);
+ out << (*m_iter)->get_name();
+ ++m_iter;
+ if (m_iter != members.end()) {
+ out << "," << endl;
+ }
+ }
+ indent_down();
+ indent(out);
+ out << endl << "}";
+
+ generate_lua_struct_reader(out, tstruct);
+ generate_lua_struct_writer(out, tstruct);
+}
+
+/**
+ * Generate a struct/exception reader
+ */
+void t_lua_generator::generate_lua_struct_reader(ofstream& out, t_struct* tstruct) {
+ const vector<t_field*>& fields = tstruct->get_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ // function
+ indent(out) << endl << endl << "function " << tstruct->get_name() << ":read(iprot)" << endl;
+ indent_up();
+
+ indent(out) << "iprot:readStructBegin()" << endl;
+
+ // while: Read in fields
+ indent(out) << "while true do" << endl;
+ indent_up();
+
+ // if: Check what to read
+ indent(out) << "local fname, ftype, fid = iprot:readFieldBegin()" << endl;
+ indent(out) << "if ftype == TType.STOP then" << endl;
+ indent_up();
+ indent(out) << "break" << endl;
+
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ indent_down();
+ indent(out) << "elseif fid == " << (*f_iter)->get_key() << " then" << endl;
+ indent_up();
+ indent(out) << "if ftype == " << type_to_enum((*f_iter)->get_type()) << " then" << endl;
+ indent_up();
+
+ // Read field contents
+ generate_deserialize_field(out, *f_iter, false, "self.");
+
+ indent_down();
+ indent(out) << "else" << endl;
+ indent(out) << " iprot:skip(ftype)" << endl;
+ indent(out) << "end" << endl;
+ }
+
+ // end if
+ indent_down();
+ indent(out) << "else" << endl;
+ indent(out) << " iprot:skip(ftype)" << endl;
+ indent(out) << "end" << endl;
+ indent(out) << "iprot:readFieldEnd()" << endl;
+
+ // end while
+ indent_down();
+ indent(out) << "end" << endl;
+ indent(out) << "iprot:readStructEnd()" << endl;
+
+ // end function
+ indent_down();
+ indent(out);
+ out << "end";
+}
+
+/**
+ * Generate a struct/exception writer
+ */
+void t_lua_generator::generate_lua_struct_writer(ofstream& out, t_struct* tstruct) {
+ const vector<t_field*>& fields = tstruct->get_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ // function
+ indent(out) << endl << endl << "function " << tstruct->get_name() << ":write(oprot)" << endl;
+ indent_up();
+
+ indent(out) << "oprot:writeStructBegin('" << tstruct->get_name() << "')" << endl;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ // To check element of self whether nil or not.
+ // avoid the value(false) of BOOL is lost.
+ indent(out) << "if self." << (*f_iter)->get_name() << " ~= nil then" << endl;
+ indent_up();
+ indent(out) << "oprot:writeFieldBegin('" << (*f_iter)->get_name() << "', "
+ << type_to_enum((*f_iter)->get_type()) << ", " << (*f_iter)->get_key() << ")"
+ << endl;
+
+ // Write field contents
+ generate_serialize_field(out, *f_iter, "self.");
+
+ indent(out) << "oprot:writeFieldEnd()" << endl;
+ indent_down();
+ indent(out) << "end" << endl;
+ }
+ indent(out) << "oprot:writeFieldStop()" << endl;
+ indent(out) << "oprot:writeStructEnd()" << endl;
+
+ // end function
+ indent_down();
+ indent(out);
+ out << "end";
+}
+
+/**
+ * Generate a thrift service
+ */
+void t_lua_generator::generate_service(t_service* tservice) {
+ // Get output directory
+ string outdir = get_out_dir();
+
+ // Open the file for writing
+ string cur_ns = get_namespace(program_);
+ string f_service_name = outdir + cur_ns + tservice->get_name() + ".lua";
+ f_service_.open(f_service_name.c_str());
+
+ // Headers
+ f_service_ << autogen_comment() << lua_includes();
+ if (gen_requires_) {
+ f_service_ << endl << "require '" << cur_ns << "ttypes'" << endl;
+
+ if (tservice->get_extends() != NULL) {
+ f_service_ << "require '" << get_namespace(tservice->get_extends()->get_program())
+ << tservice->get_extends()->get_name() << "'" << endl;
+ }
+ }
+
+ f_service_ << endl;
+
+ generate_service_client(f_service_, tservice);
+ generate_service_interface(f_service_, tservice);
+ generate_service_processor(f_service_, tservice);
+ generate_service_helpers(f_service_, tservice);
+
+ // Close the file
+ f_service_.close();
+}
+
+void t_lua_generator::generate_service_interface(ofstream& out, t_service* tservice) {
+ string classname = tservice->get_name() + "Iface";
+ t_service* extends_s = tservice->get_extends();
+
+ // Interface object definition
+ out << classname << " = ";
+ if (extends_s) {
+ out << extends_s->get_name() << "Iface:new{" << endl;
+ } else {
+ out << "__TObject:new{" << endl;
+ }
+ out << " __type = '" << classname << "'" << endl << "}" << endl << endl;
+}
+
+void t_lua_generator::generate_service_client(ofstream& out, t_service* tservice) {
+ string classname = tservice->get_name() + "Client";
+ t_service* extends_s = tservice->get_extends();
+
+ // Client object definition
+ out << classname << " = __TObject.new(";
+ if (extends_s != NULL) {
+ out << extends_s->get_name() << "Client";
+ } else {
+ out << "__TClient";
+ }
+ out << ", {" << endl << " __type = '" << classname << "'" << endl << "})" << endl;
+
+ // Send/Recv functions
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::const_iterator f_iter;
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ string sig = function_signature(*f_iter);
+ string funcname = (*f_iter)->get_name();
+
+ // Wrapper function
+ indent(out) << endl << "function " << classname << ":" << sig << endl;
+ indent_up();
+
+ indent(out) << "self:send_" << sig << endl << indent();
+ if (!(*f_iter)->is_oneway()) {
+ if (!(*f_iter)->get_returntype()->is_void()) {
+ out << "return ";
+ }
+ out << "self:recv_" << sig << endl;
+ }
+
+ indent_down();
+ indent(out) << "end" << endl;
+
+ // Send function
+ indent(out) << endl << "function " << classname << ":send_" << sig << endl;
+ indent_up();
+
+ indent(out) << "self.oprot:writeMessageBegin('" << funcname << "', "
+ << ((*f_iter)->is_oneway() ? "TMessageType.ONEWAY" : "TMessageType.CALL")
+ << ", self._seqid)" << endl;
+ indent(out) << "local args = " << funcname << "_args:new{}" << endl;
+
+ // Set the args
+ const vector<t_field*>& args = (*f_iter)->get_arglist()->get_members();
+ vector<t_field*>::const_iterator fld_iter;
+ for (fld_iter = args.begin(); fld_iter != args.end(); ++fld_iter) {
+ std::string argname = (*fld_iter)->get_name();
+ indent(out) << "args." << argname << " = " << argname << endl;
+ }
+
+ indent(out) << "args:write(self.oprot)" << endl;
+ indent(out) << "self.oprot:writeMessageEnd()" << endl;
+ indent(out) << "self.oprot.trans:flush()" << endl;
+
+ indent_down();
+ indent(out) << "end" << endl;
+
+ // Recv function
+ if (!(*f_iter)->is_oneway()) {
+ indent(out) << endl << "function " << classname << ":recv_" << sig << endl;
+ indent_up();
+
+ out << indent() << "local fname, mtype, rseqid = self.iprot:"
+ << "readMessageBegin()" << endl << indent() << "if mtype == TMessageType.EXCEPTION then"
+ << endl << indent() << " local x = TApplicationException:new{}" << endl << indent()
+ << " x:read(self.iprot)" << endl << indent() << " self.iprot:readMessageEnd()" << endl
+ << indent() << " error(x)" << endl << indent() << "end" << endl << indent()
+ << "local result = " << funcname << "_result:new{}" << endl << indent()
+ << "result:read(self.iprot)" << endl << indent() << "self.iprot:readMessageEnd()" << endl;
+
+ // Return the result if it's not a void function
+ if (!(*f_iter)->get_returntype()->is_void()) {
+ out << indent() << "if result.success ~= nil then" << endl << indent() << " return result.success"
+ << endl;
+
+ // Throw custom exceptions
+ const std::vector<t_field*>& xf = (*f_iter)->get_xceptions()->get_members();
+ vector<t_field*>::const_iterator x_iter;
+ for (x_iter = xf.begin(); x_iter != xf.end(); ++x_iter) {
+ out << indent() << "elseif result." << (*x_iter)->get_name() << " then" << endl
+ << indent() << " error(result." << (*x_iter)->get_name() << ")" << endl;
+ }
+
+ out << indent() << "end" << endl << indent()
+ << "error(TApplicationException:new{errorCode = "
+ << "TApplicationException.MISSING_RESULT})" << endl;
+ }
+
+ indent_down();
+ indent(out) << "end" << endl;
+ }
+ }
+}
+
+void t_lua_generator::generate_service_processor(ofstream& out, t_service* tservice) {
+ string classname = tservice->get_name() + "Processor";
+ t_service* extends_s = tservice->get_extends();
+
+ // Define processor table
+ out << endl << classname << " = __TObject.new(";
+ if (extends_s != NULL) {
+ out << extends_s << "Processor" << endl;
+ } else {
+ out << "__TProcessor" << endl;
+ }
+ out << ", {" << endl << " __type = '" << classname << "'" << endl << "})" << endl;
+
+ // Process function
+ indent(out) << endl << "function " << classname << ":process(iprot, oprot, server_ctx)" << endl;
+ indent_up();
+
+ indent(out) << "local name, mtype, seqid = iprot:readMessageBegin()" << endl;
+ indent(out) << "local func_name = 'process_' .. name" << endl;
+ indent(out) << "if not self[func_name] or ttype(self[func_name]) ~= 'function' then";
+ indent_up();
+ out << endl << indent() << "iprot:skip(TType.STRUCT)" << endl << indent()
+ << "iprot:readMessageEnd()" << endl << indent() << "x = TApplicationException:new{" << endl
+ << indent() << " errorCode = TApplicationException.UNKNOWN_METHOD" << endl << indent() << "}"
+ << endl << indent() << "oprot:writeMessageBegin(name, TMessageType.EXCEPTION, "
+ << "seqid)" << endl << indent() << "x:write(oprot)" << endl << indent()
+ << "oprot:writeMessageEnd()" << endl << indent() << "oprot.trans:flush()" << endl;
+ indent_down();
+ indent(out) << "else" << endl << indent()
+ << " self[func_name](self, seqid, iprot, oprot, server_ctx)" << endl << indent()
+ << "end" << endl;
+
+ indent_down();
+ indent(out) << "end" << endl;
+
+ // Generate the process subfunctions
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator f_iter;
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ generate_process_function(out, tservice, *f_iter);
+ }
+}
+
+void t_lua_generator::generate_process_function(ofstream& out,
+ t_service* tservice,
+ t_function* tfunction) {
+ string classname = tservice->get_name() + "Processor";
+ string argsname = tfunction->get_name() + "_args";
+ string resultname = tfunction->get_name() + "_result";
+ string fn_name = tfunction->get_name();
+
+ indent(out) << endl << "function " << classname << ":process_" << fn_name
+ << "(seqid, iprot, oprot, server_ctx)" << endl;
+ indent_up();
+
+ // Read the request
+ out << indent() << "local args = " << argsname << ":new{}" << endl << indent()
+ << "local reply_type = TMessageType.REPLY" << endl << indent() << "args:read(iprot)" << endl
+ << indent() << "iprot:readMessageEnd()" << endl << indent() << "local result = " << resultname
+ << ":new{}" << endl << indent() << "local status, res = pcall(self.handler." << fn_name
+ << ", self.handler";
+
+ // Print arguments
+ t_struct* args = tfunction->get_arglist();
+ if (args->get_members().size() > 0) {
+ out << ", " << argument_list(args, "args.");
+ }
+
+ // Check for errors
+ out << ")" << endl << indent() << "if not status then" << endl << indent()
+ << " reply_type = TMessageType.EXCEPTION" << endl << indent()
+ << " result = TApplicationException:new{message = res}" << endl;
+
+ // Handle custom exceptions
+ const std::vector<t_field*>& xf = tfunction->get_xceptions()->get_members();
+ if (xf.size() > 0) {
+ vector<t_field*>::const_iterator x_iter;
+ for (x_iter = xf.begin(); x_iter != xf.end(); ++x_iter) {
+ out << indent() << "elseif ttype(res) == '" << (*x_iter)->get_type()->get_name() << "' then"
+ << endl << indent() << " result." << (*x_iter)->get_name() << " = res" << endl;
+ }
+ }
+
+ // Set the result and write the reply
+ out << indent() << "else" << endl << indent() << " result.success = res" << endl << indent()
+ << "end" << endl << indent() << "oprot:writeMessageBegin('" << fn_name << "', reply_type, "
+ << "seqid)" << endl << indent() << "result:write(oprot)" << endl << indent()
+ << "oprot:writeMessageEnd()" << endl << indent() << "oprot.trans:flush()" << endl;
+
+ indent_down();
+ indent(out) << "end" << endl;
+}
+
+// Service helpers
+void t_lua_generator::generate_service_helpers(ofstream& out, t_service* tservice) {
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator f_iter;
+
+ out << endl << "-- HELPER FUNCTIONS AND STRUCTURES";
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ t_struct* ts = (*f_iter)->get_arglist();
+ generate_lua_struct_definition(out, ts, false);
+ generate_function_helpers(out, *f_iter);
+ }
+}
+
+void t_lua_generator::generate_function_helpers(ofstream& out, t_function* tfunction) {
+ if (!tfunction->is_oneway()) {
+ t_struct result(program_, tfunction->get_name() + "_result");
+ t_field success(tfunction->get_returntype(), "success", 0);
+ if (!tfunction->get_returntype()->is_void()) {
+ result.append(&success);
+ }
+
+ t_struct* xs = tfunction->get_xceptions();
+ const vector<t_field*>& fields = xs->get_members();
+ vector<t_field*>::const_iterator f_iter;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ result.append(*f_iter);
+ }
+ generate_lua_struct_definition(out, &result, false);
+ }
+}
+
+/**
+ * Deserialize (Read)
+ */
+void t_lua_generator::generate_deserialize_field(ofstream& out,
+ t_field* tfield,
+ bool local,
+ string prefix) {
+ t_type* type = get_true_type(tfield->get_type());
+
+ if (type->is_void()) {
+ throw "CANNOT GENERATE DESERIALIZE CODE FOR void TYPE: " + prefix + tfield->get_name();
+ }
+
+ string name = prefix + tfield->get_name();
+
+ if (type->is_struct() || type->is_xception()) {
+ generate_deserialize_struct(out, (t_struct*)type, local, name);
+ } else if (type->is_container()) {
+ generate_deserialize_container(out, type, local, name);
+ } else if (type->is_base_type() || type->is_enum()) {
+ indent(out) << (local ? "local " : "") << name << " = iprot:";
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "compiler error: cannot serialize void field in a struct: " + name;
+ break;
+ case t_base_type::TYPE_STRING:
+ out << "readString()";
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << "readBool()";
+ break;
+ case t_base_type::TYPE_I8:
+ out << "readByte()";
+ break;
+ case t_base_type::TYPE_I16:
+ out << "readI16()";
+ break;
+ case t_base_type::TYPE_I32:
+ out << "readI32()";
+ break;
+ case t_base_type::TYPE_I64:
+ out << "readI64()";
+ break;
+ case t_base_type::TYPE_DOUBLE:
+ out << "readDouble()";
+ break;
+ default:
+ throw "compiler error: no PHP name for base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << "readI32()";
+ }
+ out << endl;
+
+ } else {
+ printf("DO NOT KNOW HOW TO DESERIALIZE FIELD '%s' TYPE '%s'\n",
+ tfield->get_name().c_str(),
+ type->get_name().c_str());
+ }
+}
+
+void t_lua_generator::generate_deserialize_struct(ofstream& out,
+ t_struct* tstruct,
+ bool local,
+ string prefix) {
+ indent(out) << (local ? "local " : "") << prefix << " = " << tstruct->get_name() << ":new{}"
+ << endl << indent() << prefix << ":read(iprot)" << endl;
+}
+
+void t_lua_generator::generate_deserialize_container(ofstream& out,
+ t_type* ttype,
+ bool local,
+ string prefix) {
+ string size = tmp("_size");
+ string ktype = tmp("_ktype");
+ string vtype = tmp("_vtype");
+ string etype = tmp("_etype");
+
+ t_field fsize(g_type_i32, size);
+ t_field fktype(g_type_i8, ktype);
+ t_field fvtype(g_type_i8, vtype);
+ t_field fetype(g_type_i8, etype);
+
+ // Declare variables, read header
+ indent(out) << (local ? "local " : "") << prefix << " = {}" << endl;
+ if (ttype->is_map()) {
+ indent(out) << "local " << ktype << ", " << vtype << ", " << size << " = iprot:readMapBegin() "
+ << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "local " << etype << ", " << size << " = iprot:readSetBegin()" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "local " << etype << ", " << size << " = iprot:readListBegin()" << endl;
+ }
+
+ // Deserialize
+ indent(out) << "for _i=1," << size << " do" << endl;
+ indent_up();
+
+ if (ttype->is_map()) {
+ generate_deserialize_map_element(out, (t_map*)ttype, prefix);
+ } else if (ttype->is_set()) {
+ generate_deserialize_set_element(out, (t_set*)ttype, prefix);
+ } else if (ttype->is_list()) {
+ generate_deserialize_list_element(out, (t_list*)ttype, prefix);
+ }
+
+ indent_down();
+ indent(out) << "end" << endl;
+
+ // Read container end
+ if (ttype->is_map()) {
+ indent(out) << "iprot:readMapEnd()" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "iprot:readSetEnd()" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "iprot:readListEnd()" << endl;
+ }
+}
+
+void t_lua_generator::generate_deserialize_map_element(ofstream& out, t_map* tmap, string prefix) {
+ // A map is represented by a table indexable by any lua type
+ string key = tmp("_key");
+ string val = tmp("_val");
+ t_field fkey(tmap->get_key_type(), key);
+ t_field fval(tmap->get_val_type(), val);
+
+ generate_deserialize_field(out, &fkey, true);
+ generate_deserialize_field(out, &fval, true);
+
+ indent(out) << prefix << "[" << key << "] = " << val << endl;
+}
+
+void t_lua_generator::generate_deserialize_set_element(ofstream& out, t_set* tset, string prefix) {
+ // A set is represented by a table indexed by the value
+ string elem = tmp("_elem");
+ t_field felem(tset->get_elem_type(), elem);
+
+ generate_deserialize_field(out, &felem, true);
+
+ indent(out) << prefix << "[" << elem << "] = " << elem << endl;
+}
+
+void t_lua_generator::generate_deserialize_list_element(ofstream& out,
+ t_list* tlist,
+ string prefix) {
+ // A list is represented by a table indexed by integer values
+ // LUA natively provides all of the functions required to maintain a list
+ string elem = tmp("_elem");
+ t_field felem(tlist->get_elem_type(), elem);
+
+ generate_deserialize_field(out, &felem, true);
+
+ indent(out) << "table.insert(" << prefix << ", " << elem << ")" << endl;
+}
+
+/**
+ * Serialize (Write)
+ */
+void t_lua_generator::generate_serialize_field(ofstream& out, t_field* tfield, string prefix) {
+ t_type* type = get_true_type(tfield->get_type());
+ string name = prefix + tfield->get_name();
+
+ // Do nothing for void types
+ if (type->is_void()) {
+ throw "CANNOT GENERATE SERIALIZE CODE FOR void TYPE: " + name;
+ }
+
+ if (type->is_struct() || type->is_xception()) {
+ generate_serialize_struct(out, (t_struct*)type, name);
+ } else if (type->is_container()) {
+ generate_serialize_container(out, type, name);
+ } else if (type->is_base_type() || type->is_enum()) {
+ indent(out) << "oprot:";
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "compiler error: cannot serialize void field in a struct: " + name;
+ break;
+ case t_base_type::TYPE_STRING:
+ out << "writeString(" << name << ")";
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << "writeBool(" << name << ")";
+ break;
+ case t_base_type::TYPE_I8:
+ out << "writeByte(" << name << ")";
+ break;
+ case t_base_type::TYPE_I16:
+ out << "writeI16(" << name << ")";
+ break;
+ case t_base_type::TYPE_I32:
+ out << "writeI32(" << name << ")";
+ break;
+ case t_base_type::TYPE_I64:
+ out << "writeI64(" << name << ")";
+ break;
+ case t_base_type::TYPE_DOUBLE:
+ out << "writeDouble(" << name << ")";
+ break;
+ default:
+ throw "compiler error: no PHP name for base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << "writeI32(" << name << ")";
+ }
+ out << endl;
+ } else {
+ printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s' TYPE '%s'\n",
+ name.c_str(),
+ type->get_name().c_str());
+ }
+}
+
+void t_lua_generator::generate_serialize_struct(ofstream& out, t_struct* tstruct, string prefix) {
+ (void)tstruct;
+ indent(out) << prefix << ":write(oprot)" << endl;
+}
+
+void t_lua_generator::generate_serialize_container(ofstream& out, t_type* ttype, string prefix) {
+ // Begin writing
+ if (ttype->is_map()) {
+ indent(out) << "oprot:writeMapBegin(" << type_to_enum(((t_map*)ttype)->get_key_type()) << ", "
+ << type_to_enum(((t_map*)ttype)->get_val_type()) << ", "
+ << "ttable_size(" << prefix << "))" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "oprot:writeSetBegin(" << type_to_enum(((t_set*)ttype)->get_elem_type()) << ", "
+ << "ttable_size(" << prefix << "))" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "oprot:writeListBegin(" << type_to_enum(((t_list*)ttype)->get_elem_type())
+ << ", "
+ << "#" << prefix << ")" << endl;
+ }
+
+ // Serialize
+ if (ttype->is_map()) {
+ string kiter = tmp("kiter");
+ string viter = tmp("viter");
+ indent(out) << "for " << kiter << "," << viter << " in pairs(" << prefix << ") do" << endl;
+ indent_up();
+ generate_serialize_map_element(out, (t_map*)ttype, kiter, viter);
+ indent_down();
+ indent(out) << "end" << endl;
+ } else if (ttype->is_set()) {
+ string iter = tmp("iter");
+ indent(out) << "for " << iter << ",_ in pairs(" << prefix << ") do" << endl;
+ indent_up();
+ generate_serialize_set_element(out, (t_set*)ttype, iter);
+ indent_down();
+ indent(out) << "end" << endl;
+ } else if (ttype->is_list()) {
+ string iter = tmp("iter");
+ indent(out) << "for _," << iter << " in ipairs(" << prefix << ") do" << endl;
+ indent_up();
+ generate_serialize_list_element(out, (t_list*)ttype, iter);
+ indent_down();
+ indent(out) << "end" << endl;
+ }
+
+ // Finish writing
+ if (ttype->is_map()) {
+ indent(out) << "oprot:writeMapEnd()" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "oprot:writeSetEnd()" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "oprot:writeListEnd()" << endl;
+ }
+}
+
+void t_lua_generator::generate_serialize_map_element(ofstream& out,
+ t_map* tmap,
+ string kiter,
+ string viter) {
+ t_field kfield(tmap->get_key_type(), kiter);
+ generate_serialize_field(out, &kfield, "");
+
+ t_field vfield(tmap->get_val_type(), viter);
+ generate_serialize_field(out, &vfield, "");
+}
+
+void t_lua_generator::generate_serialize_set_element(ofstream& out, t_set* tset, string iter) {
+ t_field efield(tset->get_elem_type(), iter);
+ generate_serialize_field(out, &efield, "");
+}
+
+void t_lua_generator::generate_serialize_list_element(ofstream& out, t_list* tlist, string iter) {
+ t_field efield(tlist->get_elem_type(), iter);
+ generate_serialize_field(out, &efield, "");
+}
+
+/**
+ * Helper rendering functions
+ */
+string t_lua_generator::lua_includes() {
+ if (gen_requires_) {
+ return "\n\nrequire 'Thrift'";
+ } else {
+ return "";
+ }
+}
+
+string t_lua_generator::get_namespace(const t_program* program) {
+ std::string real_module = program->get_namespace("lua");
+ if (real_module.empty()) {
+ return program->get_name() + "_";
+ }
+ return real_module + "_";
+}
+
+string t_lua_generator::function_signature(t_function* tfunction, string prefix) {
+ (void)prefix;
+ std::string ret = tfunction->get_name() + "(" + argument_list(tfunction->get_arglist()) + ")";
+ return ret;
+}
+
+string t_lua_generator::argument_list(t_struct* tstruct, string prefix) {
+ const vector<t_field*>& fields = tstruct->get_members();
+ vector<t_field*>::const_iterator fld_iter;
+ std::string ret = "";
+ for (fld_iter = fields.begin(); fld_iter != fields.end();) {
+ ret += prefix + (*fld_iter)->get_name();
+ ++fld_iter;
+ if (fld_iter != fields.end()) {
+ ret += ", ";
+ }
+ }
+ return ret;
+}
+
+string t_lua_generator::type_to_enum(t_type* type) {
+ type = get_true_type(type);
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "NO T_VOID CONSTRUCT";
+ case t_base_type::TYPE_STRING:
+ return "TType.STRING";
+ case t_base_type::TYPE_BOOL:
+ return "TType.BOOL";
+ case t_base_type::TYPE_I8:
+ return "TType.BYTE";
+ case t_base_type::TYPE_I16:
+ return "TType.I16";
+ case t_base_type::TYPE_I32:
+ return "TType.I32";
+ case t_base_type::TYPE_I64:
+ return "TType.I64";
+ case t_base_type::TYPE_DOUBLE:
+ return "TType.DOUBLE";
+ }
+ } else if (type->is_enum()) {
+ return "TType.I32";
+ } else if (type->is_struct() || type->is_xception()) {
+ return "TType.STRUCT";
+ } else if (type->is_map()) {
+ return "TType.MAP";
+ } else if (type->is_set()) {
+ return "TType.SET";
+ } else if (type->is_list()) {
+ return "TType.LIST";
+ }
+
+ throw "INVALID TYPE IN type_to_enum: " + type->get_name();
+}
+
+THRIFT_REGISTER_GENERATOR(
+ lua,
+ "Lua",
+ " omit_requires: Suppress generation of require 'somefile'.\n")