| /* |
| * 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 <string> |
| #include <fstream> |
| #include <iostream> |
| #include <vector> |
| #include <list> |
| |
| #include <stdlib.h> |
| #include <sys/stat.h> |
| #include <sstream> |
| #include "platform.h" |
| #include "version.h" |
| |
| using namespace std; |
| |
| |
| #include "t_oop_generator.h" |
| |
| /** |
| * JS code generator. |
| */ |
| class t_js_generator : public t_oop_generator { |
| public: |
| t_js_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; |
| |
| iter = parsed_options.find("node"); |
| gen_node_ = (iter != parsed_options.end()); |
| |
| iter = parsed_options.find("jquery"); |
| gen_jquery_ = (iter != parsed_options.end()); |
| |
| if (gen_node_) { |
| out_dir_base_ = "gen-nodejs"; |
| } else { |
| out_dir_base_ = "gen-js"; |
| } |
| } |
| |
| /** |
| * 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_recv_throw(std::string var); |
| std::string render_recv_return(std::string var); |
| |
| std::string render_const_value(t_type* type, t_const_value* value); |
| |
| |
| /** |
| * Structs! |
| */ |
| void generate_js_struct(t_struct* tstruct, bool is_exception); |
| void generate_js_struct_definition(std::ofstream& out, t_struct* tstruct, bool is_xception=false, bool is_exported=true); |
| void generate_js_struct_reader(std::ofstream& out, t_struct* tstruct); |
| void generate_js_struct_writer(std::ofstream& out, t_struct* tstruct); |
| void generate_js_function_helpers(t_function* tfunction); |
| |
| /** |
| * Service-level generation functions |
| */ |
| void generate_service_helpers (t_service* tservice); |
| void generate_service_interface (t_service* tservice); |
| void generate_service_rest (t_service* tservice); |
| void generate_service_client (t_service* tservice); |
| void generate_service_processor (t_service* tservice); |
| void generate_process_function (t_service* tservice, t_function* tfunction); |
| |
| /** |
| * Serialization constructs |
| */ |
| |
| void generate_deserialize_field (std::ofstream &out, |
| t_field* tfield, |
| std::string prefix="", |
| bool inclass=false); |
| |
| void generate_deserialize_struct (std::ofstream &out, |
| t_struct* tstruct, |
| std::string prefix=""); |
| |
| void generate_deserialize_container (std::ofstream &out, |
| t_type* ttype, |
| 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=""); |
| |
| 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 js_includes(); |
| std::string render_includes(); |
| std::string declare_field(t_field* tfield, bool init=false, bool obj=false); |
| std::string function_signature(t_function* tfunction, std::string prefix="", bool include_callback=false); |
| std::string argument_list(t_struct* tstruct, bool include_callback=false); |
| std::string type_to_enum(t_type* ttype); |
| |
| std::string autogen_comment() { |
| return |
| std::string("//\n") + |
| "// Autogenerated by Thrift Compiler (" + THRIFT_VERSION + ")\n" + |
| "//\n" + |
| "// DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING\n" + |
| "//\n"; |
| } |
| |
| std::vector<std::string> js_namespace_pieces(t_program* p) { |
| std::string ns = p->get_namespace("js"); |
| |
| std::string::size_type loc; |
| std::vector<std::string> pieces; |
| |
| if (ns.size() > 0) { |
| while ((loc = ns.find(".")) != std::string::npos) { |
| pieces.push_back(ns.substr(0, loc)); |
| ns = ns.substr(loc+1); |
| } |
| } |
| |
| if (ns.size() > 0) { |
| pieces.push_back(ns); |
| } |
| |
| return pieces; |
| } |
| |
| std::string js_type_namespace(t_program* p) { |
| if (gen_node_) { |
| if (p != NULL && p != program_) { |
| return p->get_name() + "_ttypes."; |
| } |
| return "ttypes."; |
| } |
| return js_namespace(p); |
| } |
| |
| std::string js_export_namespace(t_program* p) { |
| if (gen_node_) { |
| return "exports."; |
| } |
| return js_namespace(p); |
| } |
| |
| std::string js_namespace(t_program* p) { |
| std::string ns = p->get_namespace("js"); |
| if (ns.size() > 0) { |
| ns += "."; |
| } |
| |
| |
| return ns; |
| } |
| |
| private: |
| |
| /** |
| * True iff we should generate NodeJS-friendly RPC services. |
| */ |
| bool gen_node_; |
| |
| /** |
| * True if we should generate services that use jQuery ajax (async/sync). |
| */ |
| bool gen_jquery_; |
| |
| /** |
| * File streams |
| */ |
| std::ofstream f_types_; |
| std::ofstream f_service_; |
| }; |
| |
| |
| /** |
| * Prepares for file generation by opening up the necessary file output |
| * streams. |
| * |
| * @param tprogram The program to generate |
| */ |
| void t_js_generator::init_generator() { |
| // Make output directory |
| MKDIR(get_out_dir().c_str()); |
| |
| string outdir = get_out_dir(); |
| |
| // Make output file |
| string f_types_name = outdir+program_->get_name()+"_types.js"; |
| f_types_.open(f_types_name.c_str()); |
| |
| // Print header |
| f_types_ << |
| autogen_comment() << |
| js_includes() << endl; |
| |
| if (gen_node_) { |
| f_types_ << "var ttypes = module.exports = {};" << endl; |
| } |
| |
| string pns; |
| |
| //setup the namespace |
| // TODO should the namespace just be in the directory structure for node? |
| vector<string> ns_pieces = js_namespace_pieces( program_ ); |
| if( ns_pieces.size() > 0){ |
| for(size_t i = 0; i < ns_pieces.size(); ++i) { |
| pns += ((i == 0) ? "" : ".") + ns_pieces[i]; |
| f_types_ << "if (typeof " << pns << " === 'undefined') {" << endl; |
| f_types_ << " " << pns << " = {};" << endl; |
| f_types_ << "}" << endl; |
| } |
| } |
| |
| } |
| |
| /** |
| * Prints standard js imports |
| */ |
| string t_js_generator::js_includes() { |
| if (gen_node_) { |
| return string("var Thrift = require('thrift').Thrift;"); |
| } |
| string inc; |
| |
| return inc; |
| } |
| |
| /** |
| * Renders all the imports necessary for including another Thrift program |
| */ |
| string t_js_generator::render_includes() { |
| if (gen_node_) { |
| const vector<t_program*>& includes = program_->get_includes(); |
| string result = ""; |
| for (size_t i = 0; i < includes.size(); ++i) { |
| result += "var " + includes[i]->get_name() + "_ttypes = require('./" + includes[i]->get_name() + "_types')\n"; |
| } |
| if (includes.size() > 0) { |
| result += "\n"; |
| } |
| return result; |
| } |
| string inc; |
| |
| return inc; |
| } |
| |
| /** |
| * Close up (or down) some filez. |
| */ |
| void t_js_generator::close_generator() { |
| // Close types file |
| |
| f_types_.close(); |
| } |
| |
| /** |
| * Generates a typedef. This is not done in JS, types are all implicit. |
| * |
| * @param ttypedef The type definition |
| */ |
| void t_js_generator::generate_typedef(t_typedef* ttypedef) { |
| (void) ttypedef; |
| } |
| |
| /** |
| * Generates code for an enumerated type. Since define is expensive to lookup |
| * in JS, we use a global array for this. |
| * |
| * @param tenum The enumeration |
| */ |
| void t_js_generator::generate_enum(t_enum* tenum) { |
| f_types_ << js_type_namespace(tenum->get_program())<<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(); ++c_iter) { |
| int value = (*c_iter)->get_value(); |
| f_types_ << "'" << (*c_iter)->get_name() << "' : " << value; |
| if (c_iter != constants.end()-1) { |
| f_types_ << ","; |
| } |
| f_types_ << endl; |
| } |
| |
| f_types_ << "};"<<endl; |
| } |
| |
| /** |
| * Generate a constant value |
| */ |
| void t_js_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_types_ << js_type_namespace(program_) << name << " = "; |
| f_types_ << render_const_value(type, value) << ";" << endl; |
| } |
| |
| /** |
| * Prints the value of a constant with the given type. Note that type checking |
| * is NOT performed in this function as it is always run beforehand using the |
| * validate_types method in main.cc |
| */ |
| string t_js_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_BYTE: |
| case t_base_type::TYPE_I16: |
| case t_base_type::TYPE_I32: |
| case t_base_type::TYPE_I64: |
| out << value->get_integer(); |
| 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 << "new " << js_type_namespace(type->get_program()) << 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(); ++v_iter) { |
| 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(); |
| } |
| if (v_iter != val.begin()) |
| out << ","; |
| out << render_const_value(g_type_string, v_iter->first); |
| out << " : "; |
| out << render_const_value(field_type, v_iter->second); |
| } |
| |
| out << "})"; |
| } else if (type->is_map()) { |
| t_type* ktype = ((t_map*)type)->get_key_type(); |
| bool key_is_string = false; |
| if (ktype->is_base_type() && ((t_base_type*)ktype)->get_base() == t_base_type::TYPE_STRING){ |
| key_is_string = true; |
| } |
| |
| t_type* vtype = ((t_map*)type)->get_val_type(); |
| out << "{"; |
| |
| 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(); ++v_iter) { |
| if (v_iter != val.begin()) |
| out << "," << endl; |
| |
| out << render_const_value(ktype, v_iter->first); |
| |
| out << " : "; |
| out << render_const_value(vtype, v_iter->second); |
| } |
| |
| out << endl << "}"; |
| } 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 << "["; |
| 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(); ++v_iter) { |
| if (v_iter != val.begin()) |
| out << ","; |
| out << render_const_value(etype, *v_iter); |
| } |
| out << "]"; |
| } |
| return out.str(); |
| } |
| |
| /** |
| * Make a struct |
| */ |
| void t_js_generator::generate_struct(t_struct* tstruct) { |
| generate_js_struct(tstruct, false); |
| } |
| |
| /** |
| * Generates a struct definition for a thrift exception. Basically the same |
| * as a struct but extends the Exception class. |
| * |
| * @param txception The struct definition |
| */ |
| void t_js_generator::generate_xception(t_struct* txception) { |
| generate_js_struct(txception, true); |
| } |
| |
| /** |
| * Structs can be normal or exceptions. |
| */ |
| void t_js_generator::generate_js_struct(t_struct* tstruct, |
| bool is_exception) { |
| generate_js_struct_definition(f_types_, tstruct, is_exception); |
| } |
| |
| /** |
| * Generates a struct definition for a thrift data type. This is nothing in JS |
| * where the objects are all just associative arrays (unless of course we |
| * decide to start using objects for them...) |
| * |
| * @param tstruct The struct definition |
| */ |
| void t_js_generator::generate_js_struct_definition(ofstream& out, |
| t_struct* tstruct, |
| bool is_exception, |
| bool is_exported) { |
| const vector<t_field*>& members = tstruct->get_members(); |
| vector<t_field*>::const_iterator m_iter; |
| |
| indent_up(); |
| |
| if (gen_node_) { |
| if (is_exported) { |
| out << "var " << js_namespace(tstruct->get_program()) << tstruct->get_name() << " = " << |
| "module.exports." << js_namespace(tstruct->get_program()) << tstruct->get_name() << " = function(args) {\n"; |
| } else { |
| out << "var " << js_namespace(tstruct->get_program()) << tstruct->get_name() << " = function(args) {\n"; |
| } |
| } else { |
| out << js_namespace(tstruct->get_program()) << tstruct->get_name() <<" = function(args) {\n"; |
| } |
| |
| if (gen_node_ && is_exception) { |
| out << indent() << "Thrift.TException.call(this, \"" << |
| js_namespace(tstruct->get_program()) << tstruct->get_name() << "\")" << endl; |
| out << indent() << "this.name = \"" << |
| js_namespace(tstruct->get_program()) << tstruct->get_name() << "\"" << endl; |
| } |
| |
| //members with arguments |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| string dval = declare_field(*m_iter,false,true); |
| t_type* t = get_true_type((*m_iter)->get_type()); |
| if ((*m_iter)->get_value() != NULL && !(t->is_struct() || t->is_xception())) { |
| dval = render_const_value((*m_iter)-> get_type(), (*m_iter)->get_value()); |
| out << indent() << "this." << (*m_iter)->get_name() << " = " << dval << ";" << endl; |
| } else { |
| out << indent() << dval << ";" << endl; |
| } |
| |
| } |
| |
| // Generate constructor from array |
| if (members.size() > 0) { |
| |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| t_type* t = get_true_type((*m_iter)->get_type()); |
| if ((*m_iter)->get_value() != NULL && (t->is_struct() || t->is_xception())) { |
| indent(out) << "this." << (*m_iter)->get_name() << " = " << render_const_value(t, (*m_iter)->get_value()) << ";" << endl; |
| } |
| } |
| |
| out << indent() << "if (args) {" << endl; |
| |
| for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { |
| out << indent() << indent() << "if (args." << (*m_iter)->get_name() << " !== undefined) {" << endl |
| << indent() << indent() << indent() << "this." << (*m_iter)->get_name() << " = args." << (*m_iter)->get_name() << ";" << endl |
| << indent() << indent() << "}" << endl; |
| } |
| |
| out << indent() << "}" << endl; |
| |
| } |
| |
| indent_down(); |
| out << "};\n"; |
| |
| if (is_exception) { |
| out << "Thrift.inherits(" << |
| js_namespace(tstruct->get_program()) << |
| tstruct->get_name() << ", Thrift.TException);" << endl; |
| out << js_namespace(tstruct->get_program())<<tstruct->get_name() <<".prototype.name = '" << tstruct->get_name() << "';" << endl; |
| } else { |
| //init prototype |
| out << js_namespace(tstruct->get_program())<<tstruct->get_name() <<".prototype = {};\n"; |
| } |
| |
| |
| generate_js_struct_reader(out, tstruct); |
| generate_js_struct_writer(out, tstruct); |
| |
| } |
| |
| /** |
| * Generates the read() method for a struct |
| */ |
| void t_js_generator::generate_js_struct_reader(ofstream& out, |
| t_struct* tstruct) { |
| const vector<t_field*>& fields = tstruct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| out << js_namespace(tstruct->get_program())<<tstruct->get_name() << ".prototype.read = function(input) {"<<endl; |
| |
| indent_up(); |
| |
| indent(out) << "input.readStructBegin();" << endl; |
| |
| |
| // Loop over reading in fields |
| indent(out) << "while (true)" << endl; |
| |
| scope_up(out); |
| |
| indent(out) << "var ret = input.readFieldBegin();" << endl; |
| indent(out) << "var fname = ret.fname;" << endl; |
| indent(out) << "var ftype = ret.ftype;" << endl; |
| indent(out) << "var fid = ret.fid;" << endl; |
| |
| |
| // Check for field STOP marker and break |
| indent(out) << "if (ftype == Thrift.Type.STOP) {" << endl; |
| indent_up(); |
| indent(out) << "break;" << endl; |
| indent_down(); |
| indent(out) << "}" << endl; |
| if (!fields.empty()) { |
| // Switch statement on the field we are reading |
| indent(out) << "switch (fid)" << endl; |
| |
| scope_up(out); |
| |
| // Generate deserialization code for known cases |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| |
| indent(out) << "case " << (*f_iter)->get_key() << ":" << endl; |
| indent(out) << "if (ftype == " << type_to_enum((*f_iter)->get_type()) << ") {" << endl; |
| |
| indent_up(); |
| generate_deserialize_field(out, *f_iter, "this."); |
| indent_down(); |
| |
| indent(out) << "} else {" << endl; |
| |
| indent(out) << " input.skip(ftype);" << endl; |
| |
| out << |
| indent() << "}" << endl << |
| indent() << "break;" << endl; |
| |
| } |
| if (fields.size() == 1) { |
| // pseudo case to make jslint happy |
| indent(out) << "case 0:" << endl; |
| indent(out) << " input.skip(ftype);" << endl; |
| indent(out) << " break;" << endl; |
| } |
| // In the default case we skip the field |
| indent(out) << "default:" << endl; |
| indent(out) << " input.skip(ftype);" << endl; |
| |
| scope_down(out); |
| } else { |
| indent(out) << "input.skip(ftype);" << endl; |
| } |
| |
| indent(out) << "input.readFieldEnd();" << endl; |
| |
| scope_down(out); |
| |
| indent(out) << "input.readStructEnd();" << endl; |
| |
| indent(out) << "return;" << endl; |
| |
| indent_down(); |
| out << indent() << "};" << endl << endl; |
| } |
| |
| /** |
| * Generates the write() method for a struct |
| */ |
| void t_js_generator::generate_js_struct_writer(ofstream& out, |
| t_struct* tstruct) { |
| string name = tstruct->get_name(); |
| const vector<t_field*>& fields = tstruct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| out << js_namespace(tstruct->get_program())<< tstruct->get_name() << ".prototype.write = function(output) {"<<endl; |
| |
| indent_up(); |
| |
| indent(out) << "output.writeStructBegin('" << name << "');" << endl; |
| |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| out << indent() << "if (this." << (*f_iter)->get_name() << ") {" << endl; |
| indent_up(); |
| |
| indent(out) << |
| "output.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, "this."); |
| |
| indent(out) << |
| "output.writeFieldEnd();" << endl; |
| |
| indent_down(); |
| indent(out) << "}" << endl; |
| } |
| |
| |
| out << |
| indent() << "output.writeFieldStop();" << endl << |
| indent() << "output.writeStructEnd();" << endl; |
| |
| out <<indent() << "return;" << endl; |
| |
| indent_down(); |
| out << |
| indent() << "};" << endl << |
| endl; |
| } |
| |
| /** |
| * Generates a thrift service. |
| * |
| * @param tservice The service definition |
| */ |
| void t_js_generator::generate_service(t_service* tservice) { |
| string f_service_name = get_out_dir()+service_name_+".js"; |
| f_service_.open(f_service_name.c_str()); |
| |
| f_service_ << |
| autogen_comment() << |
| js_includes() << endl << |
| render_includes() << endl; |
| |
| if (gen_node_) { |
| if (tservice->get_extends() != NULL) { |
| f_service_ << |
| "var " << tservice->get_extends()->get_name() << |
| " = require('./" << tservice->get_extends()->get_name() << "')" << endl << |
| "var " << tservice->get_extends()->get_name() << "Client = " << |
| tservice->get_extends()->get_name() << ".Client" << endl; |
| |
| } |
| |
| f_service_ << |
| "var ttypes = require('./" + program_->get_name() + "_types');" << endl; |
| } |
| |
| generate_service_helpers(tservice); |
| generate_service_interface(tservice); |
| generate_service_client(tservice); |
| |
| if (gen_node_) { |
| generate_service_processor(tservice); |
| } |
| |
| f_service_.close(); |
| } |
| |
| /** |
| * Generates a service server definition. |
| * |
| * @param tservice The service to generate a server for. |
| */ |
| void t_js_generator::generate_service_processor(t_service* tservice) { |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| |
| f_service_ << |
| "var " << js_namespace(tservice->get_program()) << service_name_ << "Processor = " << |
| "exports.Processor = function(handler) "; |
| |
| scope_up(f_service_); |
| |
| f_service_ << indent() << "this._handler = handler" << endl; |
| |
| scope_down(f_service_); |
| |
| // Generate the server implementation |
| indent(f_service_) << |
| js_namespace(tservice->get_program()) << service_name_ << "Processor.prototype.process = function(input, output) "; |
| |
| scope_up(f_service_); |
| |
| f_service_ << indent() << "var r = input.readMessageBegin();" << endl |
| << indent() << "if (this['process_' + r.fname]) {" << endl |
| << indent() << " return this['process_' + r.fname].call(this, r.rseqid, input, output);" << endl |
| << indent() << "} else {" << endl |
| << indent() << " input.skip(Thrift.Type.STRUCT);" << endl |
| << indent() << " input.readMessageEnd();" << endl |
| << indent() << " var x = new Thrift.TApplicationException(Thrift.TApplicationExceptionType.UNKNOWN_METHOD, 'Unknown function ' + r.fname);" << endl |
| << indent() << " output.writeMessageBegin(r.fname, Thrift.MessageType.Exception, r.rseqid);" << endl |
| << indent() << " x.write(output);" << endl |
| << indent() << " output.writeMessageEnd();" << endl |
| << indent() << " output.flush();" << endl |
| << indent() << "}" << endl; |
| |
| scope_down(f_service_); |
| f_service_ << endl; |
| |
| // Generate the process subfunctions |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| generate_process_function(tservice, *f_iter); |
| } |
| } |
| |
| /** |
| * Generates a process function definition. |
| * |
| * @param tfunction The function to write a dispatcher for |
| */ |
| void t_js_generator::generate_process_function(t_service* tservice, |
| t_function* tfunction) { |
| indent(f_service_) << |
| js_namespace(tservice->get_program()) << service_name_ << "Processor.prototype.process_" + tfunction->get_name() + " = function(seqid, input, output) "; |
| |
| scope_up(f_service_); |
| |
| string argsname = js_namespace(program_)+ service_name_ + "_" + tfunction->get_name() + "_args"; |
| string resultname = js_namespace(program_)+ service_name_ + "_" + tfunction->get_name() + "_result"; |
| |
| f_service_ << |
| indent() << "var args = new " << argsname << "();" << endl << |
| indent() << "args.read(input);" << endl << |
| indent() << "input.readMessageEnd();" << endl; |
| |
| // Declare result for non oneway function |
| if (!tfunction->is_oneway()) { |
| f_service_ << |
| indent() << "var result = new " << resultname << "();" << endl; |
| } |
| |
| // Generate the function call |
| t_struct* arg_struct = tfunction->get_arglist(); |
| const std::vector<t_field*>& fields = arg_struct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| |
| f_service_ << |
| indent() << "this._handler." << tfunction->get_name() << "("; |
| |
| bool first = true; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| } else { |
| f_service_ << ", "; |
| } |
| f_service_ << "args." << (*f_iter)->get_name(); |
| } |
| |
| // Shortcut out here for oneway functions |
| if (tfunction->is_oneway()) { |
| f_service_ << ")" << endl; |
| scope_down(f_service_); |
| f_service_ << endl; |
| return; |
| } |
| |
| if (!first) { |
| f_service_ << ", "; |
| } |
| f_service_ << "function (success) {" << endl; |
| indent_up(); |
| |
| f_service_ << |
| indent() << "result.success = success;" << endl << |
| indent() << "output.writeMessageBegin(\"" << tfunction->get_name() << |
| "\", Thrift.MessageType.REPLY, seqid);" << endl << |
| indent() << "result.write(output);" << endl << |
| indent() << "output.writeMessageEnd();" << endl << |
| indent() << "output.flush();" << endl; |
| |
| indent_down(); |
| indent(f_service_) << "})" << endl; |
| |
| scope_down(f_service_); |
| f_service_ << endl; |
| } |
| |
| /** |
| * Generates helper functions for a service. |
| * |
| * @param tservice The service to generate a header definition for |
| */ |
| void t_js_generator::generate_service_helpers(t_service* tservice) { |
| vector<t_function*> functions = tservice->get_functions(); |
| vector<t_function*>::iterator f_iter; |
| |
| f_service_ << |
| "//HELPER FUNCTIONS AND STRUCTURES" << endl << endl; |
| |
| for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) { |
| t_struct* ts = (*f_iter)->get_arglist(); |
| string name = ts->get_name(); |
| ts->set_name(service_name_ + "_" + name); |
| generate_js_struct_definition(f_service_, ts, false, false); |
| generate_js_function_helpers(*f_iter); |
| ts->set_name(name); |
| } |
| } |
| |
| /** |
| * Generates a struct and helpers for a function. |
| * |
| * @param tfunction The function |
| */ |
| void t_js_generator::generate_js_function_helpers(t_function* tfunction) { |
| t_struct result(program_, service_name_ + "_" + 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_js_struct_definition(f_service_, &result, false, false); |
| } |
| |
| /** |
| * Generates a service interface definition. |
| * |
| * @param tservice The service to generate a header definition for |
| */ |
| void t_js_generator::generate_service_interface(t_service* tservice) { |
| (void) tservice; |
| } |
| |
| /** |
| * Generates a REST interface |
| */ |
| void t_js_generator::generate_service_rest(t_service* tservice) { |
| (void) tservice; |
| } |
| |
| /** |
| * Generates a service client definition. |
| * |
| * @param tservice The service to generate a server for. |
| */ |
| void t_js_generator::generate_service_client(t_service* tservice) { |
| string extends = ""; |
| |
| if (gen_node_) { |
| f_service_ << |
| "var " << js_namespace(tservice->get_program()) << service_name_ << "Client = " << |
| "exports.Client = function(output, pClass) {"<<endl; |
| } else { |
| f_service_ << |
| js_namespace(tservice->get_program()) << service_name_ << "Client = function(input, output) {"<<endl; |
| } |
| |
| indent_up(); |
| |
| |
| if (gen_node_) { |
| f_service_ << |
| indent() << " this.output = output;" << endl << |
| indent() << " this.pClass = pClass;" << endl << |
| indent() << " this.seqid = 0;" << endl << |
| indent() << " this._reqs = {};" << endl; |
| } else { |
| f_service_ << |
| indent() << " this.input = input;" << endl << |
| indent() << " this.output = (!output) ? input : output;" << endl << |
| indent() << " this.seqid = 0;" << endl; |
| } |
| |
| |
| indent_down(); |
| |
| f_service_ << |
| indent() << "};" << endl; |
| |
| |
| if (tservice->get_extends() != NULL) { |
| indent(f_service_) << "Thrift.inherits(" << |
| js_namespace(tservice->get_program()) << |
| service_name_ << "Client, " << |
| tservice->get_extends()->get_name() << "Client)" << endl; |
| } else { |
| //init prototype |
| indent(f_service_) << js_namespace(tservice->get_program())<<service_name_ << "Client.prototype = {};"<<endl; |
| } |
| |
| // Generate client method implementations |
| 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) { |
| t_struct* arg_struct = (*f_iter)->get_arglist(); |
| const vector<t_field*>& fields = arg_struct->get_members(); |
| vector<t_field*>::const_iterator fld_iter; |
| string funname = (*f_iter)->get_name(); |
| string arglist = argument_list(arg_struct); |
| |
| // Open function |
| f_service_ << js_namespace(tservice->get_program())<<service_name_<<"Client.prototype." << |
| function_signature(*f_iter, "", gen_node_ || gen_jquery_) << " {" << endl; |
| |
| indent_up(); |
| |
| if (gen_node_) { |
| f_service_ << |
| indent() << "this.seqid += 1;" << endl << |
| indent() << "this._reqs[this.seqid] = callback;" << endl; |
| } else if (gen_jquery_) { |
| f_service_ << |
| indent() << "if (callback === undefined) {" << endl; |
| indent_up(); |
| } |
| |
| f_service_ << indent() << |
| "this.send_" << funname << "(" << arglist << ");" << endl; |
| |
| if (!gen_node_ && !(*f_iter)->is_oneway()) { |
| f_service_ << indent(); |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| f_service_ << "return "; |
| } |
| f_service_ << |
| "this.recv_" << funname << "();" << endl; |
| } |
| |
| if (gen_jquery_) { |
| indent_down(); |
| f_service_ << indent() << "} else {" << endl; |
| indent_up(); |
| f_service_ << indent() << "var postData = this.send_" << funname << |
| "(" << arglist << (arglist.empty() ? "" : ", ") << "true);" << endl; |
| f_service_ << indent() << "return this.output.getTransport()" << endl; |
| indent_up(); |
| f_service_ << indent() << ".jqRequest(this, postData, arguments, this.recv_" << funname << ");" << endl; |
| indent_down(); |
| indent_down(); |
| f_service_ << indent() << "}" << endl; |
| } |
| |
| indent_down(); |
| |
| f_service_ << "};" << endl << endl; |
| |
| |
| // Send function |
| f_service_ << js_namespace(tservice->get_program())<<service_name_ << |
| "Client.prototype.send_" << function_signature(*f_iter, "", gen_jquery_) << " {" <<endl; |
| |
| indent_up(); |
| |
| std::string outputVar; |
| if (gen_node_) { |
| f_service_ << |
| indent() << "var output = new this.pClass(this.output);" << endl; |
| outputVar = "output"; |
| } else { |
| outputVar = "this.output"; |
| } |
| |
| std::string argsname = js_namespace(program_)+ service_name_ + "_" + (*f_iter)->get_name() + "_args"; |
| |
| // Serialize the request header |
| f_service_ << |
| indent() << outputVar << ".writeMessageBegin('" << (*f_iter)->get_name() << "', Thrift.MessageType.CALL, this.seqid);" << endl; |
| |
| f_service_ << |
| indent() << "var args = new " << argsname << "();" << endl; |
| |
| for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) { |
| f_service_ << |
| indent() << "args." << (*fld_iter)->get_name() << " = " << (*fld_iter)->get_name() << ";" << endl; |
| } |
| |
| // Write to the stream |
| f_service_ << |
| indent() << "args.write(" << outputVar << ");" << endl << |
| indent() << outputVar << ".writeMessageEnd();" << endl; |
| |
| if (gen_node_) { |
| f_service_ << indent() << "return this.output.flush();" << endl; |
| } else { |
| if (gen_jquery_) { |
| f_service_ << indent() << "return this.output.getTransport().flush(callback);" << endl; |
| } else { |
| f_service_ << indent() << "return this.output.getTransport().flush();" << endl; |
| } |
| } |
| |
| |
| indent_down(); |
| |
| f_service_ << "};" << endl; |
| |
| |
| if (!(*f_iter)->is_oneway()) { |
| std::string resultname = js_namespace(tservice->get_program()) + service_name_ + "_" + (*f_iter)->get_name() + "_result"; |
| |
| if (gen_node_) { |
| // Open function |
| f_service_ << |
| endl << js_namespace(tservice->get_program())<<service_name_ << |
| "Client.prototype.recv_" << (*f_iter)->get_name() << " = function(input,mtype,rseqid) {" << endl; |
| } else { |
| t_struct noargs(program_); |
| |
| t_function recv_function((*f_iter)->get_returntype(), |
| string("recv_") + (*f_iter)->get_name(), |
| &noargs); |
| // Open function |
| f_service_ << |
| endl << js_namespace(tservice->get_program())<<service_name_ << |
| "Client.prototype." << function_signature(&recv_function) << " {" << endl; |
| } |
| |
| indent_up(); |
| |
| std::string inputVar; |
| if (gen_node_) { |
| inputVar = "input"; |
| } else { |
| inputVar = "this.input"; |
| } |
| |
| if (gen_node_) { |
| f_service_ << |
| indent() << "var callback = this._reqs[rseqid] || function() {};" << endl << |
| indent() << "delete this._reqs[rseqid];" << endl; |
| } else { |
| f_service_ << |
| indent() << "var ret = this.input.readMessageBegin();" << endl << |
| indent() << "var fname = ret.fname;" << endl << |
| indent() << "var mtype = ret.mtype;" << endl << |
| indent() << "var rseqid = ret.rseqid;" <<endl; |
| } |
| |
| f_service_ << |
| indent() << "if (mtype == Thrift.MessageType.EXCEPTION) {" << endl << |
| indent() << " var x = new Thrift.TApplicationException();" << endl << |
| indent() << " x.read(" << inputVar << ");" << endl << |
| indent() << " " << inputVar << ".readMessageEnd();" << endl << |
| indent() << " " << render_recv_throw("x") << endl << |
| indent() << "}" << endl; |
| |
| |
| f_service_ << |
| indent() << "var result = new " << resultname << "();" << endl << |
| indent() << "result.read(" << inputVar << ");" << endl; |
| |
| |
| f_service_ << |
| indent() << inputVar << ".readMessageEnd();" << endl << |
| endl; |
| |
| |
| t_struct* xs = (*f_iter)->get_xceptions(); |
| const std::vector<t_field*>& xceptions = xs->get_members(); |
| vector<t_field*>::const_iterator x_iter; |
| for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) { |
| f_service_ << |
| indent() << "if (null !== result." << (*x_iter)->get_name() << ") {" << endl << |
| indent() << " " << render_recv_throw("result." + (*x_iter)->get_name()) << endl << |
| indent() << "}" << endl; |
| } |
| |
| // Careful, only return result if not a void function |
| if (!(*f_iter)->get_returntype()->is_void()) { |
| f_service_ << |
| indent() << "if (null !== result.success) {" << endl << |
| indent() << " " << render_recv_return("result.success") << endl << |
| indent() << "}" << endl; |
| f_service_ << |
| indent() << render_recv_throw("'" + (*f_iter)->get_name() + " failed: unknown result'") << endl; |
| } else { |
| if (gen_node_) { |
| indent(f_service_) << "callback(null)" << endl; |
| } else { |
| indent(f_service_) << "return;" << endl; |
| } |
| } |
| |
| // Close function |
| indent_down(); |
| f_service_ << "};"<<endl; |
| |
| } |
| } |
| |
| } |
| |
| std::string t_js_generator::render_recv_throw(std::string var) { |
| if (gen_node_) { |
| return "return callback(" + var + ");"; |
| } else { |
| return "throw " + var + ";"; |
| } |
| } |
| |
| std::string t_js_generator::render_recv_return(std::string var) { |
| if (gen_node_) { |
| return "return callback(null, " + var + ");"; |
| } else { |
| return "return " + var + ";"; |
| } |
| } |
| |
| /** |
| * Deserializes a field of any type. |
| */ |
| void t_js_generator::generate_deserialize_field(ofstream &out, |
| t_field* tfield, |
| string prefix, |
| bool inclass) { |
| (void) inclass; |
| 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, |
| name); |
| } else if (type->is_container()) { |
| generate_deserialize_container(out, type, name); |
| } else if (type->is_base_type() || type->is_enum()) { |
| indent(out) << name << " = input."; |
| |
| 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_BYTE: |
| 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 JS name for base type " + t_base_type::t_base_name(tbase); |
| } |
| } else if (type->is_enum()) { |
| out << "readI32()"; |
| } |
| |
| if (!gen_node_) { |
| out << ".value"; |
| } |
| |
| 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()); |
| } |
| } |
| |
| /** |
| * Generates an unserializer for a variable. This makes two key assumptions, |
| * first that there is a const char* variable named data that points to the |
| * buffer for deserialization, and that there is a variable protocol which |
| * is a reference to a TProtocol serialization object. |
| */ |
| void t_js_generator::generate_deserialize_struct(ofstream &out, |
| t_struct* tstruct, |
| string prefix) { |
| out << |
| indent() << prefix << " = new " << js_type_namespace(tstruct->get_program())<<tstruct->get_name() << "();" << endl << |
| indent() << prefix << ".read(input);" << endl; |
| |
| } |
| |
| void t_js_generator::generate_deserialize_container(ofstream &out, |
| t_type* ttype, |
| string prefix) { |
| string size = tmp("_size"); |
| string ktype = tmp("_ktype"); |
| string vtype = tmp("_vtype"); |
| string etype = tmp("_etype"); |
| string rtmp3 = tmp("_rtmp3"); |
| |
| t_field fsize(g_type_i32, size); |
| t_field fktype(g_type_byte, ktype); |
| t_field fvtype(g_type_byte, vtype); |
| t_field fetype(g_type_byte, etype); |
| |
| out << indent() << "var " << size << " = 0;" << endl; |
| out << indent() << "var " << rtmp3 << ";" << endl; |
| |
| |
| // Declare variables, read header |
| if (ttype->is_map()) { |
| out << |
| indent() << prefix << " = {};" << endl << |
| indent() << "var " << ktype << " = 0;" << endl << |
| indent() << "var " << vtype << " = 0;" << endl; |
| |
| out << indent() << rtmp3 << " = input.readMapBegin();" << endl; |
| out << indent() << ktype << " = " << rtmp3 << ".ktype;" << endl; |
| out << indent() << vtype << " = " << rtmp3 << ".vtype;" << endl; |
| out << indent() << size << " = " << rtmp3 << ".size;" << endl; |
| |
| |
| } else if (ttype->is_set()) { |
| |
| out << |
| indent() << prefix << " = [];" << endl << |
| indent() << "var " << etype << " = 0;" << endl << |
| indent() << rtmp3 << " = input.readSetBegin();" << endl << |
| indent() << etype << " = " << rtmp3 << ".etype;"<<endl<< |
| indent() << size << " = " << rtmp3 << ".size;"<<endl; |
| |
| } else if (ttype->is_list()) { |
| |
| out << |
| indent() << prefix << " = [];" << endl << |
| indent() << "var " << etype << " = 0;" << endl << |
| indent() << rtmp3 << " = input.readListBegin();" << endl << |
| indent() << etype << " = " << rtmp3 << ".etype;"<<endl<< |
| indent() << size << " = " << rtmp3 << ".size;"<<endl; |
| } |
| |
| // For loop iterates over elements |
| string i = tmp("_i"); |
| indent(out) << |
| "for (var " << |
| i << " = 0; " << i << " < " << size << "; ++" << i << ")" << endl; |
| |
| scope_up(out); |
| |
| 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); |
| } |
| |
| scope_down(out); |
| |
| |
| // Read container end |
| if (ttype->is_map()) { |
| indent(out) << "input.readMapEnd();" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << "input.readSetEnd();" << endl; |
| } else if (ttype->is_list()) { |
| indent(out) << "input.readListEnd();" << endl; |
| } |
| } |
| |
| |
| /** |
| * Generates code to deserialize a map |
| */ |
| void t_js_generator::generate_deserialize_map_element(ofstream &out, |
| t_map* tmap, |
| string prefix) { |
| string key = tmp("key"); |
| string val = tmp("val"); |
| t_field fkey(tmap->get_key_type(), key); |
| t_field fval(tmap->get_val_type(), val); |
| |
| indent(out) << |
| declare_field(&fkey, false, false) << ";" << endl; |
| indent(out) << |
| declare_field(&fval, false, false) << ";" << endl; |
| |
| generate_deserialize_field(out, &fkey); |
| generate_deserialize_field(out, &fval); |
| |
| indent(out) << |
| prefix << "[" << key << "] = " << val << ";" << endl; |
| } |
| |
| void t_js_generator::generate_deserialize_set_element(ofstream &out, |
| t_set* tset, |
| string prefix) { |
| string elem = tmp("elem"); |
| t_field felem(tset->get_elem_type(), elem); |
| |
| indent(out) << |
| "var " << elem << " = null;" << endl; |
| |
| generate_deserialize_field(out, &felem); |
| |
| indent(out) << |
| prefix << ".push(" << elem << ");" << endl; |
| } |
| |
| void t_js_generator::generate_deserialize_list_element(ofstream &out, |
| t_list* tlist, |
| string prefix) { |
| string elem = tmp("elem"); |
| t_field felem(tlist->get_elem_type(), elem); |
| |
| indent(out) << |
| "var " << elem << " = null;" << endl; |
| |
| generate_deserialize_field(out, &felem); |
| |
| indent(out) << |
| prefix << ".push(" << elem << ");" << endl; |
| } |
| |
| |
| /** |
| * Serializes a field of any type. |
| * |
| * @param tfield The field to serialize |
| * @param prefix Name to prepend to field name |
| */ |
| void t_js_generator::generate_serialize_field(ofstream &out, |
| t_field* tfield, |
| string prefix) { |
| t_type* type = get_true_type(tfield->get_type()); |
| |
| // Do nothing for void types |
| if (type->is_void()) { |
| throw "CANNOT GENERATE SERIALIZE CODE FOR void TYPE: " + |
| prefix + tfield->get_name(); |
| } |
| |
| if (type->is_struct() || type->is_xception()) { |
| generate_serialize_struct(out, |
| (t_struct*)type, |
| prefix +tfield->get_name() ); |
| } else if (type->is_container()) { |
| generate_serialize_container(out, |
| type, |
| prefix + tfield->get_name()); |
| } else if (type->is_base_type() || type->is_enum()) { |
| |
| string name = tfield->get_name(); |
| |
| //Hack for when prefix is defined (always a hash ref) |
| if(!prefix.empty()) |
| name = prefix + tfield->get_name(); |
| |
| indent(out) << "output."; |
| |
| 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_BYTE: |
| 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 JS 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%s' TYPE '%s'\n", |
| prefix.c_str(), |
| tfield->get_name().c_str(), |
| type->get_name().c_str()); |
| } |
| } |
| |
| /** |
| * Serializes all the members of a struct. |
| * |
| * @param tstruct The struct to serialize |
| * @param prefix String prefix to attach to all fields |
| */ |
| void t_js_generator::generate_serialize_struct(ofstream &out, |
| t_struct* tstruct, |
| string prefix) { |
| (void) tstruct; |
| indent(out) << prefix << ".write(output);" << endl; |
| } |
| |
| /** |
| * Writes out a container |
| */ |
| void t_js_generator::generate_serialize_container(ofstream &out, |
| t_type* ttype, |
| string prefix) { |
| if (ttype->is_map()) { |
| indent(out) << |
| "output.writeMapBegin(" << |
| type_to_enum(((t_map*)ttype)->get_key_type()) << ", " << |
| type_to_enum(((t_map*)ttype)->get_val_type()) << ", " << |
| "Thrift.objectLength(" << prefix << "));" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << |
| "output.writeSetBegin(" << |
| type_to_enum(((t_set*)ttype)->get_elem_type()) << ", " << |
| prefix << ".length);" << endl; |
| |
| } else if (ttype->is_list()) { |
| |
| indent(out) << |
| "output.writeListBegin(" << |
| type_to_enum(((t_list*)ttype)->get_elem_type()) << ", " << |
| prefix << ".length);" << endl; |
| |
| } |
| |
| if (ttype->is_map()) { |
| string kiter = tmp("kiter"); |
| string viter = tmp("viter"); |
| indent(out) << "for (var "<<kiter<<" in "<<prefix<<")" << endl; |
| scope_up(out); |
| indent(out) << "if ("<<prefix<<".hasOwnProperty("<<kiter<<"))" <<endl; |
| scope_up(out); |
| indent(out) << "var "<<viter<<" = "<<prefix<<"["<<kiter<<"];"<<endl; |
| generate_serialize_map_element(out, (t_map*)ttype, kiter, viter); |
| scope_down(out); |
| scope_down(out); |
| |
| |
| } else if (ttype->is_set()) { |
| string iter = tmp("iter"); |
| indent(out) << |
| "for (var "<<iter<<" in " << prefix << ")" << endl; |
| scope_up(out); |
| indent(out) << "if ("<<prefix<<".hasOwnProperty("<<iter<<"))" <<endl; |
| scope_up(out); |
| indent(out) << iter << " = " << prefix << "[" << iter << "];"<< endl; |
| generate_serialize_set_element(out, (t_set*)ttype, iter); |
| scope_down(out); |
| scope_down(out); |
| |
| |
| } else if (ttype->is_list()) { |
| string iter = tmp("iter"); |
| indent(out) << |
| "for (var "<<iter<<" in "<< prefix << ")" << endl; |
| scope_up(out); |
| indent(out) << "if ("<<prefix<<".hasOwnProperty("<<iter<<"))" <<endl; |
| scope_up(out); |
| indent(out) << iter << " = " << prefix << "[" << iter << "];"<< endl; |
| generate_serialize_list_element(out, (t_list*)ttype, iter); |
| scope_down(out); |
| scope_down(out); |
| } |
| |
| if (ttype->is_map()) { |
| indent(out) << |
| "output.writeMapEnd();" << endl; |
| } else if (ttype->is_set()) { |
| indent(out) << |
| "output.writeSetEnd();" << endl; |
| } else if (ttype->is_list()) { |
| indent(out) << |
| "output.writeListEnd();" << endl; |
| } |
| } |
| |
| /** |
| * Serializes the members of a map. |
| * |
| */ |
| void t_js_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); |
| } |
| |
| /** |
| * Serializes the members of a set. |
| */ |
| void t_js_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); |
| } |
| |
| /** |
| * Serializes the members of a list. |
| */ |
| void t_js_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); |
| } |
| |
| /** |
| * Declares a field, which may include initialization as necessary. |
| * |
| * @param ttype The type |
| */ |
| string t_js_generator::declare_field(t_field* tfield, bool init, bool obj) { |
| string result = "this." + tfield->get_name(); |
| |
| if(!obj){ |
| result = "var " + tfield->get_name(); |
| } |
| |
| if (init) { |
| t_type* type = get_true_type(tfield->get_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: |
| break; |
| case t_base_type::TYPE_STRING: |
| case t_base_type::TYPE_BOOL: |
| case t_base_type::TYPE_BYTE: |
| case t_base_type::TYPE_I16: |
| case t_base_type::TYPE_I32: |
| case t_base_type::TYPE_I64: |
| case t_base_type::TYPE_DOUBLE: |
| result += " = null"; |
| break; |
| default: |
| throw "compiler error: no JS initializer for base type " + t_base_type::t_base_name(tbase); |
| } |
| } else if (type->is_enum()) { |
| result += " = null"; |
| } else if (type->is_map()){ |
| result += " = null"; |
| } else if (type->is_container()) { |
| result += " = null"; |
| } else if (type->is_struct() || type->is_xception()) { |
| if (obj) { |
| result += " = new " +js_type_namespace(type->get_program()) + type->get_name() + "()"; |
| } else { |
| result += " = null"; |
| } |
| } |
| } else { |
| result += " = null"; |
| } |
| return result; |
| } |
| |
| /** |
| * Renders a function signature of the form 'type name(args)' |
| * |
| * @param tfunction Function definition |
| * @return String of rendered function definition |
| */ |
| string t_js_generator::function_signature(t_function* tfunction, |
| string prefix, |
| bool include_callback) { |
| |
| string str; |
| |
| str = prefix + tfunction->get_name() + " = function("; |
| |
| str += argument_list(tfunction->get_arglist(), include_callback); |
| |
| str += ")"; |
| return str; |
| } |
| |
| /** |
| * Renders a field list |
| */ |
| string t_js_generator::argument_list(t_struct* tstruct, |
| bool include_callback) { |
| string result = ""; |
| |
| const vector<t_field*>& fields = tstruct->get_members(); |
| vector<t_field*>::const_iterator f_iter; |
| bool first = true; |
| for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) { |
| if (first) { |
| first = false; |
| } else { |
| result += ", "; |
| } |
| result += (*f_iter)->get_name(); |
| } |
| |
| if (include_callback) { |
| if (!fields.empty()) { |
| result += ", "; |
| } |
| result += "callback"; |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Converts the parse type to a C++ enum string for the given type. |
| */ |
| string t_js_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 "Thrift.Type.STRING"; |
| case t_base_type::TYPE_BOOL: |
| return "Thrift.Type.BOOL"; |
| case t_base_type::TYPE_BYTE: |
| return "Thrift.Type.BYTE"; |
| case t_base_type::TYPE_I16: |
| return "Thrift.Type.I16"; |
| case t_base_type::TYPE_I32: |
| return "Thrift.Type.I32"; |
| case t_base_type::TYPE_I64: |
| return "Thrift.Type.I64"; |
| case t_base_type::TYPE_DOUBLE: |
| return "Thrift.Type.DOUBLE"; |
| } |
| } else if (type->is_enum()) { |
| return "Thrift.Type.I32"; |
| } else if (type->is_struct() || type->is_xception()) { |
| return "Thrift.Type.STRUCT"; |
| } else if (type->is_map()) { |
| return "Thrift.Type.MAP"; |
| } else if (type->is_set()) { |
| return "Thrift.Type.SET"; |
| } else if (type->is_list()) { |
| return "Thrift.Type.LIST"; |
| } |
| |
| throw "INVALID TYPE IN type_to_enum: " + type->get_name(); |
| } |
| |
| |
| THRIFT_REGISTER_GENERATOR(js, "Javascript", |
| " jquery: Generate jQuery compatible code.\n" |
| " node: Generate node.js compatible code.\n") |
| |
