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apache / thrift / 4a280d56cca90296228ca29c7c582fa423d74e1f / . / compiler / cpp / src / thrift / generate / t_javame_generator.cc
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/*
* 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 <string>
#include <fstream>
#include <iostream>
#include <vector>
#include <cctype>
#include <sys/stat.h>
#include <stdexcept>
#include "thrift/platform.h"
#include "thrift/generate/t_oop_generator.h"
using std::map;
using std::ostream;
using std::ostringstream;
using std::string;
using std::stringstream;
using std::vector;
/**
* Java code generator.
*
*/
class t_javame_generator : public t_oop_generator {
public:
t_javame_generator(t_program* program,
const std::map<std::string, std::string>& parsed_options,
const std::string& option_string)
: t_oop_generator(program) {
(void)parsed_options;
(void)option_string;
std::map<std::string, std::string>::const_iterator iter;
/* no options yet */
for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
throw "unknown option javame:" + iter->first;
}
out_dir_base_ = "gen-javame";
}
/**
* Init and close methods
*/
void init_generator() override;
void close_generator() override;
std::string display_name() const override;
void generate_consts(std::vector<t_const*> consts) override;
/**
* Program-level generation functions
*/
void generate_typedef(t_typedef* ttypedef) override;
void generate_enum(t_enum* tenum) override;
void generate_struct(t_struct* tstruct) override;
void generate_union(t_struct* tunion);
void generate_xception(t_struct* txception) override;
void generate_service(t_service* tservice) override;
void print_const_value(std::ostream& out,
std::string name,
t_type* type,
t_const_value* value,
bool in_static,
bool defval = false);
std::string render_const_value(std::ostream& out,
std::string name,
t_type* type,
t_const_value* value);
/**
* Service-level generation functions
*/
void generate_java_struct(t_struct* tstruct, bool is_exception);
void generate_java_struct_definition(std::ostream& out,
t_struct* tstruct,
bool is_xception = false,
bool in_class = false,
bool is_result = false);
void generate_java_struct_equality(std::ostream& out, t_struct* tstruct);
void generate_java_struct_compare_to(std::ostream& out, t_struct* tstruct);
void generate_java_struct_reader(std::ostream& out, t_struct* tstruct);
void generate_java_validator(std::ostream& out, t_struct* tstruct);
void generate_java_struct_result_writer(std::ostream& out, t_struct* tstruct);
void generate_java_struct_writer(std::ostream& out, t_struct* tstruct);
void generate_java_struct_tostring(std::ostream& out, t_struct* tstruct);
void generate_java_struct_clear(std::ostream& out, t_struct* tstruct);
void generate_field_value_meta_data(std::ostream& out, t_type* type);
std::string get_java_type_string(t_type* type);
void generate_reflection_setters(std::ostringstream& out,
t_type* type,
std::string field_name,
std::string cap_name);
void generate_reflection_getters(std::ostringstream& out,
t_type* type,
std::string field_name,
std::string cap_name);
void generate_generic_field_getters_setters(std::ostream& out, t_struct* tstruct);
void generate_java_bean_boilerplate(std::ostream& out, t_struct* tstruct);
void generate_function_helpers(t_function* tfunction);
std::string get_cap_name(std::string name);
std::string generate_isset_check(t_field* field);
std::string generate_isset_check(std::string field);
void generate_isset_set(ostream& out, t_field* field);
std::string isset_field_id(t_field* field);
void generate_primitive_service_interface(t_service* tservice);
void generate_service_interface(t_service* tservice);
void generate_service_helpers(t_service* tservice);
void generate_service_client(t_service* tservice);
void generate_service_server(t_service* tservice);
void generate_process_function(t_service* tservice, t_function* tfunction);
void generate_java_union(t_struct* tstruct);
void generate_union_constructor(ostream& out, t_struct* tstruct);
void generate_union_getters_and_setters(ostream& out, t_struct* tstruct);
void generate_union_abstract_methods(ostream& out, t_struct* tstruct);
void generate_check_type(ostream& out, t_struct* tstruct);
void generate_read_value(ostream& out, t_struct* tstruct);
void generate_write_value(ostream& out, t_struct* tstruct);
void generate_get_field_desc(ostream& out, t_struct* tstruct);
void generate_get_struct_desc(ostream& out, t_struct* tstruct);
void generate_get_field_name(ostream& out, t_struct* tstruct);
void generate_union_comparisons(ostream& out, t_struct* tstruct);
void generate_union_hashcode(ostream& out, t_struct* tstruct);
/**
* Serialization constructs
*/
void generate_deserialize_field(std::ostream& out, t_field* tfield, std::string prefix = "");
void generate_deserialize_struct(std::ostream& out, t_struct* tstruct, std::string prefix = "");
void generate_deserialize_container(std::ostream& out, t_type* ttype, std::string prefix = "");
void generate_deserialize_set_element(std::ostream& out, t_set* tset, std::string prefix = "");
void generate_deserialize_map_element(std::ostream& out, t_map* tmap, std::string prefix = "");
void generate_deserialize_list_element(std::ostream& out,
t_list* tlist,
std::string prefix = "");
void generate_serialize_field(std::ostream& out, t_field* tfield, std::string prefix = "");
void generate_serialize_struct(std::ostream& out, t_struct* tstruct, std::string prefix = "");
void generate_serialize_container(std::ostream& out, t_type* ttype, std::string prefix = "");
void generate_serialize_map_element(std::ostream& out,
t_map* tmap,
std::string iter,
std::string map);
void generate_serialize_set_element(std::ostream& out, t_set* tmap, std::string iter);
void generate_serialize_list_element(std::ostream& out, t_list* tlist, std::string iter);
void generate_java_doc(std::ostream& out, t_field* field) override;
void generate_java_doc(std::ostream& out, t_doc* tdoc) override;
void generate_java_doc(std::ostream& out, t_function* tdoc) override;
void generate_java_docstring_comment(std::ostream& out, string contents) override;
void generate_deep_copy_container(std::ostream& out,
std::string source_name_p1,
std::string source_name_p2,
std::string result_name,
t_type* type);
void generate_deep_copy_non_container(std::ostream& out,
std::string source_name,
std::string dest_name,
t_type* type);
bool has_bit_vector(t_struct* tstruct);
/**
* Helper rendering functions
*/
std::string java_package();
std::string java_type_imports();
std::string java_thrift_imports();
std::string type_name(t_type* ttype,
bool in_container = false,
bool in_init = false,
bool skip_generic = false);
std::string base_type_name(t_base_type* tbase, bool in_container = false);
std::string declare_field(t_field* tfield, bool init = false);
std::string function_signature(t_function* tfunction, std::string prefix = "");
std::string argument_list(t_struct* tstruct, bool include_types = true);
std::string type_to_enum(t_type* ttype);
std::string get_enum_class_name(t_type* type) override;
void generate_struct_desc(ostream& out, t_struct* tstruct);
void generate_field_descs(ostream& out, t_struct* tstruct);
std::string box_type(t_type* type, string value);
bool type_can_be_null(t_type* ttype) {
ttype = get_true_type(ttype);
return ttype->is_container() || ttype->is_struct() || ttype->is_xception() || ttype->is_string()
|| ttype->is_enum();
}
std::string constant_name(std::string name);
private:
/**
* File streams
*/
std::string package_name_;
ofstream_with_content_based_conditional_update f_service_;
std::string package_dir_;
};
/**
* Prepares for file generation by opening up the necessary file output
* streams.
*
* @param tprogram The program to generate
*/
void t_javame_generator::init_generator() {
// Make output directory
MKDIR(get_out_dir().c_str());
package_name_ = program_->get_namespace("java");
string dir = package_name_;
string subdir = get_out_dir();
string::size_type loc;
while ((loc = dir.find(".")) != string::npos) {
subdir = subdir + "/" + dir.substr(0, loc);
MKDIR(subdir.c_str());
dir = dir.substr(loc + 1);
}
if (dir.size() > 0) {
subdir = subdir + "/" + dir;
MKDIR(subdir.c_str());
}
package_dir_ = subdir;
}
/**
* Packages the generated file
*
* @return String of the package, i.e. "package org.apache.thriftdemo;"
*/
string t_javame_generator::java_package() {
if (!package_name_.empty()) {
return string("package ") + package_name_ + ";\n\n";
}
return "";
}
/**
* Prints standard java imports
*
* @return List of imports for Java types that are used in here
*/
string t_javame_generator::java_type_imports() {
return string() + "import java.util.Hashtable;\n" + "import java.util.Vector;\n"
+ "import java.util.Enumeration;\n\n";
}
/**
* Prints standard java imports
*
* @return List of imports necessary for thrift
*/
string t_javame_generator::java_thrift_imports() {
return string() + "import org.apache.thrift.*;\n" + "import org.apache.thrift.meta_data.*;\n"
+ "import org.apache.thrift.transport.*;\n" + "import org.apache.thrift.protocol.*;\n\n";
}
/**
* Nothing in Java
*/
void t_javame_generator::close_generator() {
}
/**
* Generates a typedef. This is not done in Java, since it does
* not support arbitrary name replacements, and it'd be a wacky waste
* of overhead to make wrapper classes.
*
* @param ttypedef The type definition
*/
void t_javame_generator::generate_typedef(t_typedef* ttypedef) {
(void)ttypedef;
}
/**
* Enums are a class with a set of static constants.
*
* @param tenum The enumeration
*/
void t_javame_generator::generate_enum(t_enum* tenum) {
// Make output file
string f_enum_name = package_dir_ + "/" + (tenum->get_name()) + ".java";
ofstream_with_content_based_conditional_update f_enum;
f_enum.open(f_enum_name.c_str());
// Comment and package it
f_enum << autogen_comment() << java_package();
generate_java_doc(f_enum, tenum);
indent(f_enum) << "public class " << tenum->get_name() << " implements org.apache.thrift.TEnum ";
scope_up(f_enum);
f_enum << '\n';
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();
generate_java_doc(f_enum, *c_iter);
indent(f_enum) << "public static final " << tenum->get_name() << " " << (*c_iter)->get_name()
<< " = new " << tenum->get_name() << "(" << value << ");" << '\n';
}
f_enum << '\n';
// Field for thriftCode
indent(f_enum) << "private final int value;" << '\n' << '\n';
indent(f_enum) << "private " << tenum->get_name() << "(int value) {" << '\n';
indent(f_enum) << " this.value = value;" << '\n';
indent(f_enum) << "}" << '\n' << '\n';
indent(f_enum) << "/**" << '\n';
indent(f_enum) << " * Get the integer value of this enum value, as defined in the Thrift IDL."
<< '\n';
indent(f_enum) << " */" << '\n';
indent(f_enum) << "public int getValue() {" << '\n';
indent(f_enum) << " return value;" << '\n';
indent(f_enum) << "}" << '\n' << '\n';
indent(f_enum) << "/**" << '\n';
indent(f_enum) << " * Find a the enum type by its integer value, as defined in the Thrift IDL."
<< '\n';
indent(f_enum) << " * @return null if the value is not found." << '\n';
indent(f_enum) << " */" << '\n';
indent(f_enum) << "public static " + tenum->get_name() + " findByValue(int value) { " << '\n';
indent_up();
indent(f_enum) << "switch (value) {" << '\n';
indent_up();
for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
int value = (*c_iter)->get_value();
indent(f_enum) << "case " << value << ":" << '\n';
indent(f_enum) << " return " << (*c_iter)->get_name() << ";" << '\n';
}
indent(f_enum) << "default:" << '\n';
indent(f_enum) << " return null;" << '\n';
indent_down();
indent(f_enum) << "}" << '\n';
indent_down();
indent(f_enum) << "}" << '\n';
scope_down(f_enum);
f_enum.close();
}
/**
* Generates a class that holds all the constants.
*/
void t_javame_generator::generate_consts(std::vector<t_const*> consts) {
if (consts.empty()) {
return;
}
string f_consts_name = package_dir_ + "/" + program_name_ + "Constants.java";
ofstream_with_content_based_conditional_update f_consts;
f_consts.open(f_consts_name.c_str());
// Print header
f_consts << autogen_comment() << java_package() << java_type_imports();
f_consts << "public class " << program_name_ << "Constants {" << '\n' << '\n';
indent_up();
vector<t_const*>::iterator c_iter;
for (c_iter = consts.begin(); c_iter != consts.end(); ++c_iter) {
print_const_value(f_consts,
(*c_iter)->get_name(),
(*c_iter)->get_type(),
(*c_iter)->get_value(),
false);
}
indent_down();
indent(f_consts) << "}" << '\n';
f_consts.close();
}
/**
* 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
*/
void t_javame_generator::print_const_value(std::ostream& out,
string name,
t_type* type,
t_const_value* value,
bool in_static,
bool defval) {
type = get_true_type(type);
indent(out);
if (!defval) {
out << (in_static ? "" : "public static final ") << type_name(type) << " ";
}
if (type->is_base_type()) {
string v2 = render_const_value(out, name, type, value);
out << name << " = " << v2 << ";" << '\n' << '\n';
} else if (type->is_enum()) {
out << name << " = " << render_const_value(out, name, type, value) << ";" << '\n' << '\n';
} else if (type->is_struct() || type->is_xception()) {
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*, t_const_value::value_compare>& val = value->get_map();
map<t_const_value*, t_const_value*, t_const_value::value_compare>::const_iterator v_iter;
out << name << " = new " << type_name(type, false, true) << "();" << '\n';
if (!in_static) {
indent(out) << "static {" << '\n';
indent_up();
}
for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
t_type* field_type = nullptr;
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 == nullptr) {
throw "type error: " + type->get_name() + " has no field " + v_iter->first->get_string();
}
string val = render_const_value(out, name, field_type, v_iter->second);
indent(out) << name << ".";
std::string cap_name = get_cap_name(v_iter->first->get_string());
out << "set" << cap_name << "(" << val << ");" << '\n';
}
if (!in_static) {
indent_down();
indent(out) << "}" << '\n';
}
out << '\n';
} else if (type->is_map()) {
out << name << " = new " << type_name(type, false, true) << "();" << '\n';
if (!in_static) {
indent(out) << "static {" << '\n';
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*, t_const_value::value_compare>& val = value->get_map();
map<t_const_value*, t_const_value*, t_const_value::value_compare>::const_iterator v_iter;
for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
string key = render_const_value(out, name, ktype, v_iter->first);
string val = render_const_value(out, name, vtype, v_iter->second);
indent(out) << name << ".put(" << box_type(ktype, key) << ", " << box_type(vtype, val) << ");"
<< '\n';
}
if (!in_static) {
indent_down();
indent(out) << "}" << '\n';
}
out << '\n';
} else if (type->is_list() || type->is_set()) {
out << name << " = new " << type_name(type, false, true) << "();" << '\n';
if (!in_static) {
indent(out) << "static {" << '\n';
indent_up();
}
t_type* etype;
if (type->is_list()) {
etype = ((t_list*)type)->get_elem_type();
} else {
etype = ((t_set*)type)->get_elem_type();
}
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) {
string val = render_const_value(out, name, etype, *v_iter);
if (type->is_list()) {
indent(out) << name << ".addElement(" << box_type(etype, val) << ");" << '\n';
} else {
indent(out) << name << ".put(" << box_type(etype, val) << ", " << box_type(etype, val)
<< ");" << '\n';
}
}
if (!in_static) {
indent_down();
indent(out) << "}" << '\n';
}
out << '\n';
} else {
throw "compiler error: no const of type " + type->get_name();
}
}
string t_javame_generator::render_const_value(ostream& out,
string name,
t_type* type,
t_const_value* value) {
(void)name;
type = get_true_type(type);
std::ostringstream render;
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:
render << '"' << get_escaped_string(value) << '"';
break;
case t_base_type::TYPE_BOOL:
render << ((value->get_integer() > 0) ? "true" : "false");
break;
case t_base_type::TYPE_I8:
render << "(byte)" << value->get_integer();
break;
case t_base_type::TYPE_I16:
render << "(short)" << value->get_integer();
break;
case t_base_type::TYPE_I32:
render << value->get_integer();
break;
case t_base_type::TYPE_I64:
render << value->get_integer() << "L";
break;
case t_base_type::TYPE_DOUBLE:
if (value->get_type() == t_const_value::CV_INTEGER) {
render << "(double)" << value->get_integer();
} else {
render << 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()) {
render << type_name(type, false, false) << "." << value->get_identifier();
} else {
string t = tmp("tmp");
print_const_value(out, t, type, value, true);
render << t;
}
return render.str();
}
string t_javame_generator::box_type(t_type* type, string value) {
if (type->is_base_type()) {
switch (((t_base_type*)type)->get_base()) {
case t_base_type::TYPE_BOOL:
return "new Boolean(" + value + ")";
case t_base_type::TYPE_I8:
return "new Byte(" + value + ")";
case t_base_type::TYPE_I16:
return "new Short(" + value + ")";
case t_base_type::TYPE_I32:
return "new Integer(" + value + ")";
case t_base_type::TYPE_I64:
return "new Long(" + value + ")";
case t_base_type::TYPE_DOUBLE:
return "new Double(" + value + ")";
default:
break;
}
}
return value;
}
/**
* Generates a struct definition for a thrift data type. This will be a TBase
* implementor.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_struct(t_struct* tstruct) {
if (tstruct->is_union()) {
generate_java_union(tstruct);
} else {
generate_java_struct(tstruct, false);
}
}
/**
* Exceptions are structs, but they inherit from Exception
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_xception(t_struct* txception) {
generate_java_struct(txception, true);
}
/**
* Java struct definition.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct(t_struct* tstruct, bool is_exception) {
// Make output file
string f_struct_name = package_dir_ + "/" + (tstruct->get_name()) + ".java";
ofstream_with_content_based_conditional_update f_struct;
f_struct.open(f_struct_name.c_str());
f_struct << autogen_comment() << java_package() << java_type_imports() << java_thrift_imports();
generate_java_struct_definition(f_struct, tstruct, is_exception);
f_struct.close();
}
/**
* Java union definition.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_union(t_struct* tstruct) {
// Make output file
string f_struct_name = package_dir_ + "/" + (tstruct->get_name()) + ".java";
ofstream_with_content_based_conditional_update f_struct;
f_struct.open(f_struct_name.c_str());
f_struct << autogen_comment() << java_package() << java_type_imports() << java_thrift_imports();
generate_java_doc(f_struct, tstruct);
bool is_final = (tstruct->annotations_.find("final") != tstruct->annotations_.end());
indent(f_struct) << "public " << (is_final ? "final " : "") << "class " << tstruct->get_name()
<< " extends TUnion ";
scope_up(f_struct);
generate_struct_desc(f_struct, tstruct);
generate_field_descs(f_struct, tstruct);
f_struct << '\n';
generate_union_constructor(f_struct, tstruct);
f_struct << '\n';
generate_union_abstract_methods(f_struct, tstruct);
f_struct << '\n';
generate_union_getters_and_setters(f_struct, tstruct);
f_struct << '\n';
generate_union_comparisons(f_struct, tstruct);
f_struct << '\n';
generate_union_hashcode(f_struct, tstruct);
f_struct << '\n';
scope_down(f_struct);
f_struct.close();
}
void t_javame_generator::generate_union_constructor(ostream& out, t_struct* tstruct) {
indent(out) << "public " << type_name(tstruct) << "() {" << '\n';
indent(out) << " super();" << '\n';
indent(out) << "}" << '\n' << '\n';
indent(out) << "public " << type_name(tstruct) << "(_Fields setField, Object value) {" << '\n';
indent(out) << " super(setField, value);" << '\n';
indent(out) << "}" << '\n' << '\n';
indent(out) << "public " << type_name(tstruct) << "(" << type_name(tstruct) << " other) {"
<< '\n';
indent(out) << " super(other);" << '\n';
indent(out) << "}" << '\n';
indent(out) << "public " << tstruct->get_name() << " deepCopy() {" << '\n';
indent(out) << " return new " << tstruct->get_name() << "(this);" << '\n';
indent(out) << "}" << '\n' << '\n';
// generate "constructors" for each field
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
indent(out) << "public static " << type_name(tstruct) << " " << (*m_iter)->get_name() << "("
<< type_name((*m_iter)->get_type()) << " value) {" << '\n';
indent(out) << " " << type_name(tstruct) << " x = new " << type_name(tstruct) << "();" << '\n';
indent(out) << " x.set" << get_cap_name((*m_iter)->get_name()) << "(value);" << '\n';
indent(out) << " return x;" << '\n';
indent(out) << "}" << '\n' << '\n';
}
}
void t_javame_generator::generate_union_getters_and_setters(ostream& out, t_struct* tstruct) {
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
bool first = true;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
if (first) {
first = false;
} else {
out << '\n';
}
t_field* field = (*m_iter);
generate_java_doc(out, field);
indent(out) << "public " << type_name(field->get_type()) << " get"
<< get_cap_name(field->get_name()) << "() {" << '\n';
indent(out) << " if (getSetField() == _Fields." << constant_name(field->get_name()) << ") {"
<< '\n';
indent(out) << " return (" << type_name(field->get_type(), true) << ")getFieldValue();"
<< '\n';
indent(out) << " } else {" << '\n';
indent(out) << " throw new RuntimeException(\"Cannot get field '" << field->get_name()
<< "' because union is currently set to \" + getFieldDesc(getSetField()).name);"
<< '\n';
indent(out) << " }" << '\n';
indent(out) << "}" << '\n';
out << '\n';
generate_java_doc(out, field);
indent(out) << "public void set" << get_cap_name(field->get_name()) << "("
<< type_name(field->get_type()) << " value) {" << '\n';
if (type_can_be_null(field->get_type())) {
indent(out) << " if (value == null) throw new NullPointerException();" << '\n';
}
indent(out) << " setField_ = _Fields." << constant_name(field->get_name()) << ";" << '\n';
indent(out) << " value_ = value;" << '\n';
indent(out) << "}" << '\n';
}
}
void t_javame_generator::generate_union_abstract_methods(ostream& out, t_struct* tstruct) {
generate_check_type(out, tstruct);
out << '\n';
generate_read_value(out, tstruct);
out << '\n';
generate_write_value(out, tstruct);
out << '\n';
generate_get_field_desc(out, tstruct);
out << '\n';
generate_get_struct_desc(out, tstruct);
out << '\n';
}
void t_javame_generator::generate_check_type(ostream& out, t_struct* tstruct) {
indent(out)
<< "protected void checkType(_Fields setField, Object value) throws ClassCastException {"
<< '\n';
indent_up();
indent(out) << "switch (setField) {" << '\n';
indent_up();
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = (*m_iter);
indent(out) << "case " << constant_name(field->get_name()) << ":" << '\n';
indent(out) << " if (value instanceof " << type_name(field->get_type(), true, false, true)
<< ") {" << '\n';
indent(out) << " break;" << '\n';
indent(out) << " }" << '\n';
indent(out) << " throw new ClassCastException(\"Was expecting value of type "
<< type_name(field->get_type(), true, false) << " for field '" << field->get_name()
<< "', but got \" + value.getClass().getSimpleName());" << '\n';
// do the real check here
}
indent(out) << "default:" << '\n';
indent(out) << " throw new IllegalArgumentException(\"Unknown field id \" + setField);" << '\n';
indent_down();
indent(out) << "}" << '\n';
indent_down();
indent(out) << "}" << '\n';
}
void t_javame_generator::generate_read_value(ostream& out, t_struct* tstruct) {
indent(out) << "protected Object readValue(TProtocol iprot, TField field) throws TException {"
<< '\n';
indent_up();
indent(out) << "_Fields setField = _Fields.findByThriftId(field.id);" << '\n';
indent(out) << "if (setField != null) {" << '\n';
indent_up();
indent(out) << "switch (setField) {" << '\n';
indent_up();
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = (*m_iter);
indent(out) << "case " << constant_name(field->get_name()) << ":" << '\n';
indent_up();
indent(out) << "if (field.type == " << constant_name(field->get_name()) << "_FIELD_DESC.type) {"
<< '\n';
indent_up();
indent(out) << type_name(field->get_type(), true, false) << " " << field->get_name() << ";"
<< '\n';
generate_deserialize_field(out, field, "");
indent(out) << "return " << field->get_name() << ";" << '\n';
indent_down();
indent(out) << "} else {" << '\n';
indent(out) << " TProtocolUtil.skip(iprot, field.type);" << '\n';
indent(out) << " return null;" << '\n';
indent(out) << "}" << '\n';
indent_down();
}
indent(out) << "default:" << '\n';
indent(out) << " throw new IllegalStateException(\"setField wasn't null, but didn't match any "
"of the case statements!\");" << '\n';
indent_down();
indent(out) << "}" << '\n';
indent_down();
indent(out) << "} else {" << '\n';
indent_up();
indent(out) << "TProtocolUtil.skip(iprot, field.type);" << '\n';
indent(out) << "return null;" << '\n';
indent_down();
indent(out) << "}" << '\n';
indent_down();
indent(out) << "}" << '\n';
}
void t_javame_generator::generate_write_value(ostream& out, t_struct* tstruct) {
indent(out) << "protected void writeValue(TProtocol oprot) throws TException {" << '\n';
indent_up();
indent(out) << "switch (setField_) {" << '\n';
indent_up();
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = (*m_iter);
indent(out) << "case " << constant_name(field->get_name()) << ":" << '\n';
indent_up();
indent(out) << type_name(field->get_type(), true, false) << " " << field->get_name() << " = ("
<< type_name(field->get_type(), true, false) << ")value_;" << '\n';
generate_serialize_field(out, field, "");
indent(out) << "return;" << '\n';
indent_down();
}
indent(out) << "default:" << '\n';
indent(out) << " throw new IllegalStateException(\"Cannot write union with unknown field \" + "
"setField_);" << '\n';
indent_down();
indent(out) << "}" << '\n';
indent_down();
indent(out) << "}" << '\n';
}
void t_javame_generator::generate_get_field_desc(ostream& out, t_struct* tstruct) {
indent(out) << "protected TField getFieldDesc(_Fields setField) {" << '\n';
indent_up();
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
indent(out) << "switch (setField) {" << '\n';
indent_up();
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = (*m_iter);
indent(out) << "case " << constant_name(field->get_name()) << ":" << '\n';
indent(out) << " return " << constant_name(field->get_name()) << "_FIELD_DESC;" << '\n';
}
indent(out) << "default:" << '\n';
indent(out) << " throw new IllegalArgumentException(\"Unknown field id \" + setField);" << '\n';
indent_down();
indent(out) << "}" << '\n';
indent_down();
indent(out) << "}" << '\n';
}
void t_javame_generator::generate_get_struct_desc(ostream& out, t_struct* tstruct) {
(void)tstruct;
indent(out) << "protected TStruct getStructDesc() {" << '\n';
indent(out) << " return STRUCT_DESC;" << '\n';
indent(out) << "}" << '\n';
}
void t_javame_generator::generate_union_comparisons(ostream& out, t_struct* tstruct) {
// equality
indent(out) << "public boolean equals(Object other) {" << '\n';
indent(out) << " if (other instanceof " << tstruct->get_name() << ") {" << '\n';
indent(out) << " return equals((" << tstruct->get_name() << ")other);" << '\n';
indent(out) << " } else {" << '\n';
indent(out) << " return false;" << '\n';
indent(out) << " }" << '\n';
indent(out) << "}" << '\n';
out << '\n';
indent(out) << "public boolean equals(" << tstruct->get_name() << " other) {" << '\n';
indent(out) << " return other != null && getSetField() == other.getSetField() && "
"getFieldValue().equals(other.getFieldValue());" << '\n';
indent(out) << "}" << '\n';
out << '\n';
indent(out) << "public int compareTo(" << type_name(tstruct) << " other) {" << '\n';
indent(out) << " int lastComparison = TBaseHelper.compareTo(getSetField(), other.getSetField());"
<< '\n';
indent(out) << " if (lastComparison == 0) {" << '\n';
indent(out) << " return TBaseHelper.compareTo(getFieldValue(), other.getFieldValue());"
<< '\n';
indent(out) << " }" << '\n';
indent(out) << " return lastComparison;" << '\n';
indent(out) << "}" << '\n';
out << '\n';
}
void t_javame_generator::generate_union_hashcode(ostream& out, t_struct* tstruct) {
(void)tstruct;
indent(out) << "/**" << '\n';
indent(out)
<< " * If you'd like this to perform more respectably, use the hashcode generator option."
<< '\n';
indent(out) << " */" << '\n';
indent(out) << "public int hashCode() {" << '\n';
indent(out) << " return 0;" << '\n';
indent(out) << "}" << '\n';
}
/**
* Java struct definition. This has various parameters, as it could be
* generated standalone or inside another class as a helper. If it
* is a helper than it is a static class.
*
* @param tstruct The struct definition
* @param is_exception Is this an exception?
* @param in_class If inside a class, needs to be static class
* @param is_result If this is a result it needs a different writer
*/
void t_javame_generator::generate_java_struct_definition(ostream& out,
t_struct* tstruct,
bool is_exception,
bool in_class,
bool is_result) {
generate_java_doc(out, tstruct);
bool is_final = (tstruct->annotations_.find("final") != tstruct->annotations_.end());
indent(out) << "public " << (is_final ? "final " : "") << (in_class ? "static " : "") << "class "
<< tstruct->get_name() << " ";
if (is_exception) {
out << "extends Exception ";
}
out << "implements TBase ";
scope_up(out);
generate_struct_desc(out, tstruct);
// Members are public for -java, private for -javabean
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
out << '\n';
generate_field_descs(out, tstruct);
out << '\n';
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
indent(out) << "private ";
out << declare_field(*m_iter, false) << '\n';
}
// isset data
if (members.size() > 0) {
out << '\n';
indent(out) << "// isset id assignments" << '\n';
int i = 0;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
if (!type_can_be_null((*m_iter)->get_type())) {
indent(out) << "private static final int " << isset_field_id(*m_iter) << " = " << i << ";"
<< '\n';
i++;
}
}
if (i > 0) {
indent(out) << "private boolean[] __isset_vector = new boolean[" << i << "];" << '\n';
}
out << '\n';
}
bool all_optional_members = true;
// Default constructor
indent(out) << "public " << tstruct->get_name() << "() {" << '\n';
indent_up();
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() != nullptr) {
print_const_value(out,
"this." + (*m_iter)->get_name(),
t,
(*m_iter)->get_value(),
true,
true);
}
if ((*m_iter)->get_req() != t_field::T_OPTIONAL) {
all_optional_members = false;
}
}
indent_down();
indent(out) << "}" << '\n' << '\n';
if (!members.empty() && !all_optional_members) {
// Full constructor for all fields
indent(out) << "public " << tstruct->get_name() << "(" << '\n';
indent_up();
bool first = true;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
if ((*m_iter)->get_req() != t_field::T_OPTIONAL) {
if (!first) {
out << "," << '\n';
}
first = false;
indent(out) << type_name((*m_iter)->get_type()) << " " << (*m_iter)->get_name();
}
}
out << ")" << '\n';
indent_down();
indent(out) << "{" << '\n';
indent_up();
indent(out) << "this();" << '\n';
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
if ((*m_iter)->get_req() != t_field::T_OPTIONAL) {
indent(out) << "this." << (*m_iter)->get_name() << " = " << (*m_iter)->get_name() << ";"
<< '\n';
generate_isset_set(out, (*m_iter));
}
}
indent_down();
indent(out) << "}" << '\n' << '\n';
}
// copy constructor
indent(out) << "/**" << '\n';
indent(out) << " * Performs a deep copy on <i>other</i>." << '\n';
indent(out) << " */" << '\n';
indent(out) << "public " << tstruct->get_name() << "(" << tstruct->get_name() << " other) {"
<< '\n';
indent_up();
if (has_bit_vector(tstruct)) {
indent(out) << "System.arraycopy(other.__isset_vector, 0, __isset_vector, 0, "
"other.__isset_vector.length);" << '\n';
}
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = (*m_iter);
std::string field_name = field->get_name();
t_type* type = field->get_type();
bool can_be_null = type_can_be_null(type);
if (can_be_null) {
indent(out) << "if (other." << generate_isset_check(field) << ") {" << '\n';
indent_up();
}
if (type->is_container()) {
generate_deep_copy_container(out, "other", field_name, "__this__" + field_name, type);
indent(out) << "this." << field_name << " = __this__" << field_name << ";" << '\n';
} else {
indent(out) << "this." << field_name << " = ";
generate_deep_copy_non_container(out, "other." + field_name, field_name, type);
out << ";" << '\n';
}
if (can_be_null) {
indent_down();
indent(out) << "}" << '\n';
}
}
indent_down();
indent(out) << "}" << '\n' << '\n';
// clone method, so that you can deep copy an object when you don't know its class.
indent(out) << "public " << tstruct->get_name() << " deepCopy() {" << '\n';
indent(out) << " return new " << tstruct->get_name() << "(this);" << '\n';
indent(out) << "}" << '\n' << '\n';
generate_java_struct_clear(out, tstruct);
generate_java_bean_boilerplate(out, tstruct);
generate_generic_field_getters_setters(out, tstruct);
generate_java_struct_equality(out, tstruct);
generate_java_struct_compare_to(out, tstruct);
generate_java_struct_reader(out, tstruct);
if (is_result) {
generate_java_struct_result_writer(out, tstruct);
} else {
generate_java_struct_writer(out, tstruct);
}
generate_java_struct_tostring(out, tstruct);
generate_java_validator(out, tstruct);
scope_down(out);
out << '\n';
}
/**
* Generates equals methods and a hashCode method for a structure.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct_equality(ostream& out, t_struct* tstruct) {
out << indent() << "public boolean equals(Object that) {" << '\n';
indent_up();
out << indent() << "if (that == null)" << '\n' << indent() << " return false;" << '\n'
<< indent() << "if (that instanceof " << tstruct->get_name() << ")" << '\n' << indent()
<< " return this.equals((" << tstruct->get_name() << ")that);" << '\n' << indent()
<< "return false;" << '\n';
scope_down(out);
out << '\n';
out << indent() << "public boolean equals(" << tstruct->get_name() << " that) {" << '\n';
indent_up();
out << indent() << "if (that == null)" << '\n' << indent() << " return false;" << '\n'
<< indent() << "if (this == that)" << '\n' << indent() << " return true;" << '\n';
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
out << '\n';
t_type* t = get_true_type((*m_iter)->get_type());
// Most existing Thrift code does not use isset or optional/required,
// so we treat "default" fields as required.
bool is_optional = (*m_iter)->get_req() == t_field::T_OPTIONAL;
bool can_be_null = type_can_be_null(t);
string name = (*m_iter)->get_name();
string this_present = "true";
string that_present = "true";
string unequal;
if (is_optional || can_be_null) {
this_present += " && this." + generate_isset_check(*m_iter);
that_present += " && that." + generate_isset_check(*m_iter);
}
out << indent() << "boolean this_present_" << name << " = " << this_present << ";" << '\n'
<< indent() << "boolean that_present_" << name << " = " << that_present << ";" << '\n'
<< indent() << "if ("
<< "this_present_" << name << " || that_present_" << name << ") {" << '\n';
indent_up();
out << indent() << "if (!("
<< "this_present_" << name << " && that_present_" << name << "))" << '\n' << indent()
<< " return false;" << '\n';
if (t->is_binary()) {
unequal = "TBaseHelper.compareTo(this." + name + ", that." + name + ") != 0";
} else if (can_be_null) {
unequal = "!this." + name + ".equals(that." + name + ")";
} else {
unequal = "this." + name + " != that." + name;
}
out << indent() << "if (" << unequal << ")" << '\n' << indent() << " return false;" << '\n';
scope_down(out);
}
out << '\n';
indent(out) << "return true;" << '\n';
scope_down(out);
out << '\n';
out << indent() << "public int hashCode() {" << '\n';
indent_up();
indent(out) << "return 0;" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
}
void t_javame_generator::generate_java_struct_compare_to(ostream& out, t_struct* tstruct) {
indent(out) << "public int compareTo(Object otherObject) {" << '\n';
// indent(out) << "public int compareTo(" << type_name(tstruct) << " other) {" << '\n';
indent_up();
indent(out) << "if (!getClass().equals(otherObject.getClass())) {" << '\n';
indent(out) << " return getClass().getName().compareTo(otherObject.getClass().getName());"
<< '\n';
indent(out) << "}" << '\n';
out << '\n';
indent(out) << type_name(tstruct) << " other = (" << type_name(tstruct) << ")otherObject;";
indent(out) << "int lastComparison = 0;" << '\n';
out << '\n';
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
t_field* field = *m_iter;
indent(out) << "lastComparison = TBaseHelper.compareTo(" << generate_isset_check(field)
<< ", other." << generate_isset_check(field) << ");" << '\n';
indent(out) << "if (lastComparison != 0) {" << '\n';
indent(out) << " return lastComparison;" << '\n';
indent(out) << "}" << '\n';
indent(out) << "if (" << generate_isset_check(field) << ") {" << '\n';
if (field->get_type()->is_struct() || field->get_type()->is_xception()) {
indent(out) << " lastComparison = this." << field->get_name() << ".compareTo(other."
<< field->get_name() << ");" << '\n';
} else {
indent(out) << " lastComparison = TBaseHelper.compareTo(this." << field->get_name()
<< ", other." << field->get_name() << ");" << '\n';
}
indent(out) << " if (lastComparison != 0) {" << '\n';
indent(out) << " return lastComparison;" << '\n';
indent(out) << " }" << '\n';
indent(out) << "}" << '\n';
}
indent(out) << "return 0;" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
}
/**
* Generates a function to read all the fields of the struct.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct_reader(ostream& out, t_struct* tstruct) {
out << indent() << "public void read(TProtocol iprot) throws TException {" << '\n';
indent_up();
const vector<t_field*>& fields = tstruct->get_members();
vector<t_field*>::const_iterator f_iter;
// Declare stack tmp variables and read struct header
out << indent() << "TField field;" << '\n' << indent() << "iprot.readStructBegin();" << '\n';
// Loop over reading in fields
indent(out) << "while (true)" << '\n';
scope_up(out);
// Read beginning field marker
indent(out) << "field = iprot.readFieldBegin();" << '\n';
// Check for field STOP marker and break
indent(out) << "if (field.type == TType.STOP) { " << '\n';
indent_up();
indent(out) << "break;" << '\n';
indent_down();
indent(out) << "}" << '\n';
// Switch statement on the field we are reading
indent(out) << "switch (field.id) {" << '\n';
indent_up();
// Generate deserialization code for known cases
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
indent(out) << "case " << (*f_iter)->get_key() << ": // "
<< constant_name((*f_iter)->get_name()) << '\n';
indent_up();
indent(out) << "if (field.type == " << type_to_enum((*f_iter)->get_type()) << ") {" << '\n';
indent_up();
generate_deserialize_field(out, *f_iter, "this.");
generate_isset_set(out, *f_iter);
indent_down();
out << indent() << "} else { " << '\n' << indent() << " TProtocolUtil.skip(iprot, field.type);"
<< '\n' << indent() << "}" << '\n' << indent() << "break;" << '\n';
indent_down();
}
indent(out) << "default:" << '\n';
indent(out) << " TProtocolUtil.skip(iprot, field.type);" << '\n';
indent_down();
indent(out) << "}" << '\n';
// Read field end marker
indent(out) << "iprot.readFieldEnd();" << '\n';
indent_down();
indent(out) << "}" << '\n';
out << indent() << "iprot.readStructEnd();" << '\n';
// performs various checks (e.g. check that all required fields are set)
indent(out) << "validate();" << '\n';
indent_down();
out << indent() << "}" << '\n' << '\n';
}
// generates java method to perform various checks
// (e.g. check that all required fields are set)
void t_javame_generator::generate_java_validator(ostream& out, t_struct* tstruct) {
indent(out) << "public void validate() throws TException {" << '\n';
indent_up();
const vector<t_field*>& fields = tstruct->get_members();
vector<t_field*>::const_iterator f_iter;
out << indent() << "// check for required fields" << '\n';
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
if ((*f_iter)->get_req() == t_field::T_REQUIRED) {
out << indent() << "if (!" << generate_isset_check(*f_iter) << ") {" << '\n' << indent()
<< " throw new TProtocolException(\"Required field '" << (*f_iter)->get_name()
<< "' is unset! Struct:\" + toString());" << '\n' << indent() << "}" << '\n' << '\n';
}
}
indent_down();
indent(out) << "}" << '\n' << '\n';
}
/**
* Generates a function to write all the fields of the struct
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct_writer(ostream& out, t_struct* tstruct) {
out << indent() << "public void write(TProtocol oprot) throws TException {" << '\n';
indent_up();
string name = tstruct->get_name();
const vector<t_field*>& fields = tstruct->get_sorted_members();
vector<t_field*>::const_iterator f_iter;
// performs various checks (e.g. check that all required fields are set)
indent(out) << "validate();" << '\n' << '\n';
indent(out) << "oprot.writeStructBegin(STRUCT_DESC);" << '\n';
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
bool null_allowed = type_can_be_null((*f_iter)->get_type());
if (null_allowed) {
out << indent() << "if (this." << (*f_iter)->get_name() << " != null) {" << '\n';
indent_up();
}
bool optional = (*f_iter)->get_req() == t_field::T_OPTIONAL;
if (optional) {
indent(out) << "if (" << generate_isset_check((*f_iter)) << ") {" << '\n';
indent_up();
}
indent(out) << "oprot.writeFieldBegin(" << constant_name((*f_iter)->get_name())
<< "_FIELD_DESC);" << '\n';
// Write field contents
generate_serialize_field(out, *f_iter, "this.");
// Write field closer
indent(out) << "oprot.writeFieldEnd();" << '\n';
if (optional) {
indent_down();
indent(out) << "}" << '\n';
}
if (null_allowed) {
indent_down();
indent(out) << "}" << '\n';
}
}
// Write the struct map
out << indent() << "oprot.writeFieldStop();" << '\n' << indent() << "oprot.writeStructEnd();"
<< '\n';
indent_down();
out << indent() << "}" << '\n' << '\n';
}
/**
* Generates a function to write all the fields of the struct,
* which is a function result. These fields are only written
* if they are set in the Isset array, and only one of them
* can be set at a time.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct_result_writer(ostream& out, t_struct* tstruct) {
out << indent() << "public void write(TProtocol oprot) throws TException {" << '\n';
indent_up();
string name = tstruct->get_name();
const vector<t_field*>& fields = tstruct->get_sorted_members();
vector<t_field*>::const_iterator f_iter;
indent(out) << "oprot.writeStructBegin(STRUCT_DESC);" << '\n';
bool first = true;
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
if (first) {
first = false;
out << '\n' << indent() << "if ";
} else {
out << " else if ";
}
out << "(this." << generate_isset_check(*f_iter) << ") {" << '\n';
indent_up();
indent(out) << "oprot.writeFieldBegin(" << constant_name((*f_iter)->get_name())
<< "_FIELD_DESC);" << '\n';
// Write field contents
generate_serialize_field(out, *f_iter, "this.");
// Write field closer
indent(out) << "oprot.writeFieldEnd();" << '\n';
indent_down();
indent(out) << "}";
}
// Write the struct map
out << '\n' << indent() << "oprot.writeFieldStop();" << '\n' << indent()
<< "oprot.writeStructEnd();" << '\n';
indent_down();
out << indent() << "}" << '\n' << '\n';
}
void t_javame_generator::generate_reflection_getters(ostringstream& out,
t_type* type,
string field_name,
string cap_name) {
indent(out) << "case " << constant_name(field_name) << ":" << '\n';
indent_up();
if (type->is_base_type() && !type->is_string()) {
t_base_type* base_type = (t_base_type*)type;
indent(out) << "return new " << type_name(type, true, false) << "("
<< (base_type->is_bool() ? "is" : "get") << cap_name << "());" << '\n' << '\n';
} else {
indent(out) << "return get" << cap_name << "();" << '\n' << '\n';
}
indent_down();
}
void t_javame_generator::generate_reflection_setters(ostringstream& out,
t_type* type,
string field_name,
string cap_name) {
indent(out) << "case " << constant_name(field_name) << ":" << '\n';
indent_up();
indent(out) << "if (value == null) {" << '\n';
indent(out) << " unset" << get_cap_name(field_name) << "();" << '\n';
indent(out) << "} else {" << '\n';
indent(out) << " set" << cap_name << "((" << type_name(type, true, false) << ")value);" << '\n';
indent(out) << "}" << '\n';
indent(out) << "break;" << '\n' << '\n';
indent_down();
}
void t_javame_generator::generate_generic_field_getters_setters(std::ostream& out,
t_struct* tstruct) {
(void)out;
std::ostringstream getter_stream;
std::ostringstream setter_stream;
// build up the bodies of both the getter and setter at once
const vector<t_field*>& fields = tstruct->get_members();
vector<t_field*>::const_iterator f_iter;
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
t_field* field = *f_iter;
t_type* type = get_true_type(field->get_type());
std::string field_name = field->get_name();
std::string cap_name = get_cap_name(field_name);
indent_up();
generate_reflection_setters(setter_stream, type, field_name, cap_name);
generate_reflection_getters(getter_stream, type, field_name, cap_name);
indent_down();
}
}
/**
* Generates a set of Java Bean boilerplate functions (setters, getters, etc.)
* for the given struct.
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_bean_boilerplate(ostream& out, t_struct* tstruct) {
const vector<t_field*>& fields = tstruct->get_members();
vector<t_field*>::const_iterator f_iter;
for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
t_field* field = *f_iter;
t_type* type = get_true_type(field->get_type());
std::string field_name = field->get_name();
std::string cap_name = get_cap_name(field_name);
if (type->is_container()) {
// Method to return the size of the collection
indent(out) << "public int get" << cap_name;
out << get_cap_name("size() {") << '\n';
indent_up();
indent(out) << "return (this." << field_name << " == null) ? 0 : "
<< "this." << field_name << ".size();" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
}
if (type->is_set() || type->is_list()) {
t_type* element_type;
if (type->is_set()) {
element_type = ((t_set*)type)->get_elem_type();
} else {
element_type = ((t_list*)type)->get_elem_type();
}
// Iterator getter for sets and lists
indent(out) << "public Enumeration get" << cap_name;
out << get_cap_name("Enumeration() {") << '\n';
indent_up();
indent(out) << "return (this." << field_name << " == null) ? null : "
<< "this." << field_name << ".elements();" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
// Add to set or list, create if the set/list is null
indent(out);
out << "public void add" << get_cap_name("to");
out << cap_name << "(" << type_name(element_type) << " elem) {" << '\n';
indent_up();
indent(out) << "if (this." << field_name << " == null) {" << '\n';
indent_up();
indent(out) << "this." << field_name << " = new " << type_name(type, false, true) << "();"
<< '\n';
indent_down();
indent(out) << "}" << '\n';
if (type->is_set()) {
indent(out) << "this." << field_name << ".put(" << box_type(element_type, "elem") << ", "
<< box_type(element_type, "elem") << ");" << '\n';
} else {
indent(out) << "this." << field_name << ".addElement(" << box_type(element_type, "elem")
<< ");" << '\n';
}
indent_down();
indent(out) << "}" << '\n' << '\n';
} else if (type->is_map()) {
// Put to map
t_type* key_type = ((t_map*)type)->get_key_type();
t_type* val_type = ((t_map*)type)->get_val_type();
indent(out);
out << "public void putTo" << cap_name << "(" << type_name(key_type, true) << " key, "
<< type_name(val_type, true) << " val) {" << '\n';
indent_up();
indent(out) << "if (this." << field_name << " == null) {" << '\n';
indent_up();
indent(out) << "this." << field_name << " = new " << type_name(type, false, true) << "();"
<< '\n';
indent_down();
indent(out) << "}" << '\n';
indent(out) << "this." << field_name << ".put(key, val);" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
}
// Simple getter
generate_java_doc(out, field);
indent(out) << "public " << type_name(type);
if (type->is_base_type() && ((t_base_type*)type)->get_base() == t_base_type::TYPE_BOOL) {
out << " is";
} else {
out << " get";
}
out << cap_name << "() {" << '\n';
indent_up();
indent(out) << "return this." << field_name << ";" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
// Simple setter
generate_java_doc(out, field);
indent(out) << "public ";
out << "void";
out << " set" << cap_name << "(" << type_name(type) << " " << field_name << ") {" << '\n';
indent_up();
indent(out) << "this." << field_name << " = " << field_name << ";" << '\n';
generate_isset_set(out, field);
indent_down();
indent(out) << "}" << '\n' << '\n';
// Unsetter
indent(out) << "public void unset" << cap_name << "() {" << '\n';
indent_up();
if (type_can_be_null(type)) {
indent(out) << "this." << field_name << " = null;" << '\n';
} else {
indent(out) << "__isset_vector[" << isset_field_id(field) << "] = false;" << '\n';
}
indent_down();
indent(out) << "}" << '\n' << '\n';
// isSet method
indent(out) << "/** Returns true if field " << field_name
<< " is set (has been assigned a value) and false otherwise */" << '\n';
indent(out) << "public boolean is" << get_cap_name("set") << cap_name << "() {" << '\n';
indent_up();
if (type_can_be_null(type)) {
indent(out) << "return this." << field_name << " != null;" << '\n';
} else {
indent(out) << "return __isset_vector[" << isset_field_id(field) << "];" << '\n';
}
indent_down();
indent(out) << "}" << '\n' << '\n';
indent(out) << "public void set" << cap_name << get_cap_name("isSet") << "(boolean value) {"
<< '\n';
indent_up();
if (type_can_be_null(type)) {
indent(out) << "if (!value) {" << '\n';
indent(out) << " this." << field_name << " = null;" << '\n';
indent(out) << "}" << '\n';
} else {
indent(out) << "__isset_vector[" << isset_field_id(field) << "] = value;" << '\n';
}
indent_down();
indent(out) << "}" << '\n' << '\n';
}
}
/**
* Generates a toString() method for the given struct
*
* @param tstruct The struct definition
*/
void t_javame_generator::generate_java_struct_tostring(ostream& out, t_struct* tstruct) {
out << indent() << "public String toString() {" << '\n';
indent_up();
out << indent() << "StringBuffer sb = new StringBuffer(\"" << tstruct->get_name() << "(\");"
<< '\n';
out << indent() << "boolean first = true;" << '\n' << '\n';
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) {
bool could_be_unset = (*f_iter)->get_req() == t_field::T_OPTIONAL;
if (could_be_unset) {
indent(out) << "if (" << generate_isset_check(*f_iter) << ") {" << '\n';
indent_up();
}
t_field* field = (*f_iter);
if (!first) {
indent(out) << "if (!first) sb.append(\", \");" << '\n';
}
indent(out) << "sb.append(\"" << (*f_iter)->get_name() << ":\");" << '\n';
bool can_be_null = type_can_be_null(field->get_type());
if (can_be_null) {
indent(out) << "if (this." << (*f_iter)->get_name() << " == null) {" << '\n';
indent(out) << " sb.append(\"null\");" << '\n';
indent(out) << "} else {" << '\n';
indent_up();
}
if (field->get_type()->is_binary()) {
indent(out) << "TBaseHelper.toString(this." << field->get_name() << ", sb);" << '\n';
} else {
indent(out) << "sb.append(this." << (*f_iter)->get_name() << ");" << '\n';
}
if (can_be_null) {
indent_down();
indent(out) << "}" << '\n';
}
indent(out) << "first = false;" << '\n';
if (could_be_unset) {
indent_down();
indent(out) << "}" << '\n';
}
first = false;
}
out << indent() << "sb.append(\")\");" << '\n' << indent() << "return sb.toString();" << '\n';
indent_down();
indent(out) << "}" << '\n' << '\n';
}
/**
* Returns a string with the java representation of the given thrift type
* (e.g. for the type struct it returns "TType.STRUCT")
*/
std::string t_javame_generator::get_java_type_string(t_type* type) {
if (type->is_list()) {
return "TType.LIST";
} else if (type->is_map()) {
return "TType.MAP";
} else if (type->is_set()) {
return "TType.SET";
} else if (type->is_struct() || type->is_xception()) {
return "TType.STRUCT";
} else if (type->is_enum()) {
return "TType.ENUM";
} else if (type->is_typedef()) {
return get_java_type_string(((t_typedef*)type)->get_type());
} else if (type->is_base_type()) {
switch (((t_base_type*)type)->get_base()) {
case t_base_type::TYPE_VOID:
return "TType.VOID";
break;
case t_base_type::TYPE_STRING:
return "TType.STRING";
break;
case t_base_type::TYPE_BOOL:
return "TType.BOOL";
break;
case t_base_type::TYPE_I8:
return "TType.BYTE";
break;
case t_base_type::TYPE_I16:
return "TType.I16";
break;
case t_base_type::TYPE_I32:
return "TType.I32";
break;
case t_base_type::TYPE_I64:
return "TType.I64";
break;
case t_base_type::TYPE_DOUBLE:
return "TType.DOUBLE";
break;
default:
throw std::runtime_error("Unknown thrift type \"" + type->get_name()
+ "\" passed to t_javame_generator::get_java_type_string!");
break; // This should never happen!
}
} else {
throw std::runtime_error(
"Unknown thrift type \"" + type->get_name()
+ "\" passed to t_javame_generator::get_java_type_string!"); // This should never happen!
}
}
void t_javame_generator::generate_field_value_meta_data(std::ostream& out, t_type* type) {
out << '\n';
indent_up();
indent_up();
if (type->is_struct() || type->is_xception()) {
indent(out) << "new StructMetaData(TType.STRUCT, " << type_name(type) << ".class";
} else if (type->is_container()) {
if (type->is_list()) {
indent(out) << "new ListMetaData(TType.LIST, ";
t_type* elem_type = ((t_list*)type)->get_elem_type();
generate_field_value_meta_data(out, elem_type);
} else if (type->is_set()) {
indent(out) << "new SetMetaData(TType.SET, ";
t_type* elem_type = ((t_list*)type)->get_elem_type();
generate_field_value_meta_data(out, elem_type);
} else { // map
indent(out) << "new MapMetaData(TType.MAP, ";
t_type* key_type = ((t_map*)type)->get_key_type();
t_type* val_type = ((t_map*)type)->get_val_type();
generate_field_value_meta_data(out, key_type);
out << ", ";
generate_field_value_meta_data(out, val_type);
}
} else if (type->is_enum()) {
indent(out) << "new EnumMetaData(TType.ENUM, " << type_name(type) << ".class";
} else {
indent(out) << "new FieldValueMetaData(" << get_java_type_string(type);
if (type->is_typedef()) {
indent(out) << ", \"" << ((t_typedef*)type)->get_symbolic() << "\"";
}
}
out << ")";
indent_down();
indent_down();
}
/**
* Generates a thrift service. In C++, this comprises an entirely separate
* header and source file. The header file defines the methods and includes
* the data types defined in the main header file, and the implementation
* file contains implementations of the basic printer and default interfaces.
*
* @param tservice The service definition
*/
void t_javame_generator::generate_service(t_service* tservice) {
// Make output file
string f_service_name = package_dir_ + "/" + service_name_ + ".java";
f_service_.open(f_service_name.c_str());
f_service_ << autogen_comment() << java_package() << java_type_imports() << java_thrift_imports();
f_service_ << "public class " << service_name_ << " {" << '\n' << '\n';
indent_up();
// Generate the three main parts of the service
generate_service_interface(tservice);
generate_service_client(tservice);
generate_service_server(tservice);
generate_service_helpers(tservice);
indent_down();
f_service_ << "}" << '\n';
f_service_.close();
}
/**
* Generates a service interface definition.
*
* @param tservice The service to generate a header definition for
*/
void t_javame_generator::generate_primitive_service_interface(t_service* tservice) {
f_service_ << indent() << "public interface Iface extends " << service_name_ << "Iface { }"
<< '\n' << '\n';
string f_interface_name = package_dir_ + "/" + service_name_ + "Iface.java";
ofstream_with_content_based_conditional_update f_iface;
f_iface.open(f_interface_name.c_str());
string extends_iface = "";
if (tservice->get_extends() != nullptr) {
extends_iface = " extends " + type_name(tservice->get_extends()) + "Iface";
}
f_iface << autogen_comment() << java_package() << java_type_imports() << java_thrift_imports();
generate_java_doc(f_iface, tservice);
f_iface << "public interface " << service_name_ << "Iface" << extends_iface << " {" << '\n'
<< '\n';
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_java_doc(f_iface, *f_iter);
f_iface << " public " << function_signature(*f_iter) << ";" << '\n' << '\n';
}
f_iface << "}" << '\n' << '\n';
}
/**
* Generates a service interface definition.
*
* @param tservice The service to generate a header definition for
*/
void t_javame_generator::generate_service_interface(t_service* tservice) {
string extends = "";
string extends_iface = "";
if (tservice->get_extends() != nullptr) {
extends = type_name(tservice->get_extends());
extends_iface = " extends " + extends + ".Iface";
}
generate_java_doc(f_service_, tservice);
f_service_ << indent() << "public interface Iface" << extends_iface << " {" << '\n' << '\n';
indent_up();
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_java_doc(f_service_, *f_iter);
indent(f_service_) << "public " << function_signature(*f_iter) << ";" << '\n' << '\n';
}
indent_down();
f_service_ << indent() << "}" << '\n' << '\n';
}
/**
* Generates structs for all the service args and return types
*
* @param tservice The service
*/
void t_javame_generator::generate_service_helpers(t_service* tservice) {
vector<t_function*> functions = tservice->get_functions();
vector<t_function*>::iterator f_iter;
for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
t_struct* ts = (*f_iter)->get_arglist();
generate_java_struct_definition(f_service_, ts, false, true);
generate_function_helpers(*f_iter);
}
}
/**
* Generates a service client definition.
*
* @param tservice The service to generate a server for.
*/
void t_javame_generator::generate_service_client(t_service* tservice) {
string extends = "";
string extends_client = "";
if (tservice->get_extends() != nullptr) {
extends = type_name(tservice->get_extends());
extends_client = " extends " + extends + ".Client";
}
indent(f_service_) << "public static class Client" << extends_client
<< " implements TServiceClient, Iface {" << '\n';
indent_up();
indent(f_service_) << "public Client(TProtocol prot)" << '\n';
scope_up(f_service_);
indent(f_service_) << "this(prot, prot);" << '\n';
scope_down(f_service_);
f_service_ << '\n';
indent(f_service_) << "public Client(TProtocol iprot, TProtocol oprot)" << '\n';
scope_up(f_service_);
if (extends.empty()) {
f_service_ << indent() << "iprot_ = iprot;" << '\n' << indent() << "oprot_ = oprot;" << '\n';
} else {
f_service_ << indent() << "super(iprot, oprot);" << '\n';
}
scope_down(f_service_);
f_service_ << '\n';
if (extends.empty()) {
f_service_ << indent() << "protected TProtocol iprot_;" << '\n' << indent()
<< "protected TProtocol oprot_;" << '\n' << '\n' << indent()
<< "protected int seqid_;" << '\n' << '\n';
indent(f_service_) << "public TProtocol getInputProtocol()" << '\n';
scope_up(f_service_);
indent(f_service_) << "return this.iprot_;" << '\n';
scope_down(f_service_);
f_service_ << '\n';
indent(f_service_) << "public TProtocol getOutputProtocol()" << '\n';
scope_up(f_service_);
indent(f_service_) << "return this.oprot_;" << '\n';
scope_down(f_service_);
f_service_ << '\n';
}
// 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) {
string funname = (*f_iter)->get_name();
// Open function
indent(f_service_) << "public " << function_signature(*f_iter) << '\n';
scope_up(f_service_);
indent(f_service_) << "send_" << funname << "(";
// Get the struct of function call params
t_struct* arg_struct = (*f_iter)->get_arglist();
// Declare the function arguments
const vector<t_field*>& fields = arg_struct->get_members();
vector<t_field*>::const_iterator fld_iter;
bool first = true;
for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
if (first) {
first = false;
} else {
f_service_ << ", ";
}
f_service_ << (*fld_iter)->get_name();
}
f_service_ << ");" << '\n';
if (!(*f_iter)->is_oneway()) {
f_service_ << indent();
if (!(*f_iter)->get_returntype()->is_void()) {
f_service_ << "return ";
}
f_service_ << "recv_" << funname << "();" << '\n';
}
scope_down(f_service_);
f_service_ << '\n';
t_function send_function(g_type_void,
string("send_") + (*f_iter)->get_name(),
(*f_iter)->get_arglist());
string argsname = (*f_iter)->get_name() + "_args";
// Open function
indent(f_service_) << "public " << function_signature(&send_function) << '\n';
scope_up(f_service_);
// Serialize the request
f_service_ << indent() << "oprot_.writeMessageBegin(new TMessage(\"" << funname << "\", "
<< ((*f_iter)->is_oneway() ? "TMessageType.ONEWAY" : "TMessageType.CALL")
<< ", ++seqid_));" << '\n' << indent() << argsname << " args = new " << argsname
<< "();" << '\n';
for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
f_service_ << indent() << "args.set" << get_cap_name((*fld_iter)->get_name()) << "("
<< (*fld_iter)->get_name() << ");" << '\n';
}
f_service_ << indent() << "args.write(oprot_);" << '\n' << indent()
<< "oprot_.writeMessageEnd();" << '\n' << indent()
<< "oprot_.getTransport().flush();" << '\n';
scope_down(f_service_);
f_service_ << '\n';
if (!(*f_iter)->is_oneway()) {
string resultname = (*f_iter)->get_name() + "_result";
t_struct noargs(program_);
t_function recv_function((*f_iter)->get_returntype(),
string("recv_") + (*f_iter)->get_name(),
&noargs,
(*f_iter)->get_xceptions());
// Open function
indent(f_service_) << "public " << function_signature(&recv_function) << '\n';
scope_up(f_service_);
f_service_ << indent() << "TMessage msg = iprot_.readMessageBegin();" << '\n' << indent()
<< "if (msg.type == TMessageType.EXCEPTION) {" << '\n' << indent()
<< " TApplicationException x = TApplicationException.read(iprot_);" << '\n'
<< indent() << " iprot_.readMessageEnd();" << '\n' << indent() << " throw x;"
<< '\n' << indent() << "}" << '\n' << indent() << "if (msg.seqid != seqid_) {"
<< '\n' << indent()
<< " throw new TApplicationException(TApplicationException.BAD_SEQUENCE_ID, \""
<< (*f_iter)->get_name() << " failed: out of sequence response\");" << '\n'
<< indent() << "}" << '\n' << indent() << resultname << " result = new "
<< resultname << "();" << '\n' << indent() << "result.read(iprot_);" << '\n'
<< indent() << "iprot_.readMessageEnd();" << '\n';
// Careful, only return _result if not a void function
if (!(*f_iter)->get_returntype()->is_void()) {
f_service_ << indent() << "if (result." << generate_isset_check("success") << ") {" << '\n'
<< indent() << " return result.success;" << '\n' << indent() << "}" << '\n';
}
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 (result." << (*x_iter)->get_name() << " != null) {" << '\n'
<< indent() << " throw result." << (*x_iter)->get_name() << ";" << '\n'
<< indent() << "}" << '\n';
}
// If you get here it's an exception, unless a void function
if ((*f_iter)->get_returntype()->is_void()) {
indent(f_service_) << "return;" << '\n';
} else {
f_service_ << indent()
<< "throw new TApplicationException(TApplicationException.MISSING_RESULT, \""
<< (*f_iter)->get_name() << " failed: unknown result\");" << '\n';
}
// Close function
scope_down(f_service_);
f_service_ << '\n';
}
}
indent_down();
indent(f_service_) << "}" << '\n';
}
/**
* Generates a service server definition.
*
* @param tservice The service to generate a server for.
*/
void t_javame_generator::generate_service_server(t_service* tservice) {
// Generate the dispatch methods
vector<t_function*> functions = tservice->get_functions();
vector<t_function*>::iterator f_iter;
// Extends stuff
string extends = "";
string extends_processor = "";
if (tservice->get_extends() != nullptr) {
extends = type_name(tservice->get_extends());
extends_processor = " extends " + extends + ".Processor";
}
// Generate the header portion
indent(f_service_) << "public static class Processor" << extends_processor
<< " implements TProcessor {" << '\n';
indent_up();
indent(f_service_) << "public Processor(Iface iface)" << '\n';
scope_up(f_service_);
if (!extends.empty()) {
f_service_ << indent() << "super(iface);" << '\n';
}
f_service_ << indent() << "iface_ = iface;" << '\n';
for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
f_service_ << indent() << "processMap_.put(\"" << (*f_iter)->get_name() << "\", new "
<< (*f_iter)->get_name() << "());" << '\n';
}
scope_down(f_service_);
f_service_ << '\n';
if (extends.empty()) {
f_service_
<< indent() << "protected static interface ProcessFunction {" << '\n' << indent()
<< " public void process(int seqid, TProtocol iprot, TProtocol oprot) throws TException;"
<< '\n' << indent() << "}" << '\n' << '\n';
}
f_service_ << indent() << "private Iface iface_;" << '\n';
if (extends.empty()) {
f_service_ << indent() << "protected final Hashtable processMap_ = new Hashtable();" << '\n';
}
f_service_ << '\n';
// Generate the server implementation
indent(f_service_) << "public boolean process(TProtocol iprot, TProtocol oprot) throws TException"
<< '\n';
scope_up(f_service_);
f_service_ << indent() << "TMessage msg = iprot.readMessageBegin();" << '\n';
// TODO(mcslee): validate message, was the seqid etc. legit?
f_service_
<< indent() << "ProcessFunction fn = (ProcessFunction)processMap_.get(msg.name);" << '\n'
<< indent() << "if (fn == null) {" << '\n' << indent()
<< " TProtocolUtil.skip(iprot, TType.STRUCT);" << '\n' << indent()
<< " iprot.readMessageEnd();" << '\n' << indent()
<< " TApplicationException x = new "
"TApplicationException(TApplicationException.UNKNOWN_METHOD, \"Invalid method name: "
"'\"+msg.name+\"'\");" << '\n' << indent()
<< " oprot.writeMessageBegin(new TMessage(msg.name, TMessageType.EXCEPTION, msg.seqid));"
<< '\n' << indent() << " x.write(oprot);" << '\n' << indent() << " oprot.writeMessageEnd();"
<< '\n' << indent() << " oprot.getTransport().flush();" << '\n' << indent()
<< " return true;" << '\n' << indent() << "}" << '\n' << indent()
<< "fn.process(msg.seqid, iprot, oprot);" << '\n';
f_service_ << indent() << "return true;" << '\n';
scope_down(f_service_);
f_service_ << '\n';
// Generate the process subfunctions
for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
generate_process_function(tservice, *f_iter);
}
indent_down();
indent(f_service_) << "}" << '\n' << '\n';
}
/**
* Generates a struct and helpers for a function.
*
* @param tfunction The function
*/
void t_javame_generator::generate_function_helpers(t_function* tfunction) {
if (tfunction->is_oneway()) {
return;
}
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_java_struct_definition(f_service_, &result, false, true, true);
}
/**
* Generates a process function definition.
*
* @param tfunction The function to write a dispatcher for
*/
void t_javame_generator::generate_process_function(t_service* tservice, t_function* tfunction) {
(void)tservice;
// Open class
indent(f_service_) << "private class " << tfunction->get_name() << " implements ProcessFunction {"
<< '\n';
indent_up();
// Open function
indent(f_service_)
<< "public void process(int seqid, TProtocol iprot, TProtocol oprot) throws TException"
<< '\n';
scope_up(f_service_);
string argsname = tfunction->get_name() + "_args";
string resultname = tfunction->get_name() + "_result";
f_service_ << indent() << argsname << " args = new " << argsname << "();" << '\n' << indent()
<< "try {" << '\n';
indent_up();
f_service_ << indent() << "args.read(iprot);" << '\n';
indent_down();
f_service_ << indent() << "} catch (TProtocolException e) {" << '\n';
indent_up();
f_service_ << indent() << "iprot.readMessageEnd();" << '\n' << indent()
<< "TApplicationException x = new "
"TApplicationException(TApplicationException.PROTOCOL_ERROR, e.getMessage());"
<< '\n' << indent() << "oprot.writeMessageBegin(new TMessage(\""
<< tfunction->get_name() << "\", TMessageType.EXCEPTION, seqid));" << '\n' << indent()
<< "x.write(oprot);" << '\n' << indent() << "oprot.writeMessageEnd();" << '\n'
<< indent() << "oprot.getTransport().flush();" << '\n' << indent() << "return;"
<< '\n';
indent_down();
f_service_ << indent() << "}" << '\n';
f_service_ << indent() << "iprot.readMessageEnd();" << '\n';
t_struct* xs = tfunction->get_xceptions();
const std::vector<t_field*>& xceptions = xs->get_members();
vector<t_field*>::const_iterator x_iter;
// Declare result for non oneway function
if (!tfunction->is_oneway()) {
f_service_ << indent() << resultname << " result = new " << resultname << "();" << '\n';
}
// Try block for a function with exceptions
if (xceptions.size() > 0) {
f_service_ << indent() << "try {" << '\n';
indent_up();
}
// 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();
if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()) {
f_service_ << "result.success = ";
}
f_service_ << "iface_." << 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();
}
f_service_ << ");" << '\n';
// Set isset on success field
if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()
&& !type_can_be_null(tfunction->get_returntype())) {
f_service_ << indent() << "result.set" << get_cap_name("success") << get_cap_name("isSet")
<< "(true);" << '\n';
}
if (!tfunction->is_oneway() && xceptions.size() > 0) {
indent_down();
f_service_ << indent() << "}";
for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) {
f_service_ << " catch (" << type_name((*x_iter)->get_type(), false, false) << " "
<< (*x_iter)->get_name() << ") {" << '\n';
if (!tfunction->is_oneway()) {
indent_up();
f_service_ << indent() << "result." << (*x_iter)->get_name() << " = "
<< (*x_iter)->get_name() << ";" << '\n';
indent_down();
f_service_ << indent() << "}";
} else {
f_service_ << "}";
}
}
f_service_ << " catch (Throwable th) {" << '\n';
indent_up();
f_service_ << indent() << "TApplicationException x = new "
"TApplicationException(TApplicationException.INTERNAL_ERROR, "
"\"Internal error processing " << tfunction->get_name() << "\");"
<< '\n' << indent() << "oprot.writeMessageBegin(new TMessage(\""
<< tfunction->get_name() << "\", TMessageType.EXCEPTION, seqid));" << '\n'
<< indent() << "x.write(oprot);" << '\n' << indent() << "oprot.writeMessageEnd();"
<< '\n' << indent() << "oprot.getTransport().flush();" << '\n' << indent()
<< "return;" << '\n';
indent_down();
f_service_ << indent() << "}" << '\n';
}
// Shortcut out here for oneway functions
if (tfunction->is_oneway()) {
f_service_ << indent() << "return;" << '\n';
scope_down(f_service_);
// Close class
indent_down();
f_service_ << indent() << "}" << '\n' << '\n';
return;
}
f_service_ << indent() << "oprot.writeMessageBegin(new TMessage(\"" << tfunction->get_name()
<< "\", TMessageType.REPLY, seqid));" << '\n' << indent() << "result.write(oprot);"
<< '\n' << indent() << "oprot.writeMessageEnd();" << '\n' << indent()
<< "oprot.getTransport().flush();" << '\n';
// Close function
scope_down(f_service_);
f_service_ << '\n';
// Close class
indent_down();
f_service_ << indent() << "}" << '\n' << '\n';
}
/**
* Deserializes a field of any type.
*
* @param tfield The field
* @param prefix The variable name or container for this field
*/
void t_javame_generator::generate_deserialize_field(ostream& out, t_field* tfield, 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, name);
} else if (type->is_container()) {
generate_deserialize_container(out, type, name);
} else if (type->is_base_type()) {
indent(out) << name << " = iprot.";
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:
if (!type->is_binary()) {
out << "readString();";
} else {
out << "readBinary();";
}
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 Java name for base type " + t_base_type::t_base_name(tbase);
}
out << '\n';
} else if (type->is_enum()) {
indent(out) << name << " = "
<< type_name(tfield->get_type(), true, false) + ".findByValue(iprot.readI32());"
<< '\n';
} else {
printf("DO NOT KNOW HOW TO DESERIALIZE FIELD '%s' TYPE '%s'\n",
tfield->get_name().c_str(),
type_name(type).c_str());
}
}
/**
* Generates an unserializer for a struct, invokes read()
*/
void t_javame_generator::generate_deserialize_struct(ostream& out,
t_struct* tstruct,
string prefix) {
out << indent() << prefix << " = new " << type_name(tstruct) << "();" << '\n' << indent()
<< prefix << ".read(iprot);" << '\n';
}
/**
* Deserializes a container by reading its size and then iterating
*/
void t_javame_generator::generate_deserialize_container(ostream& out,
t_type* ttype,
string prefix) {
scope_up(out);
string obj;
if (ttype->is_map()) {
obj = tmp("_map");
} else if (ttype->is_set()) {
obj = tmp("_set");
} else if (ttype->is_list()) {
obj = tmp("_list");
}
// Declare variables, read header
if (ttype->is_map()) {
indent(out) << "TMap " << obj << " = iprot.readMapBegin();" << '\n';
} else if (ttype->is_set()) {
indent(out) << "TSet " << obj << " = iprot.readSetBegin();" << '\n';
} else if (ttype->is_list()) {
indent(out) << "TList " << obj << " = iprot.readListBegin();" << '\n';
}
indent(out) << prefix << " = new " << type_name(ttype, false, true)
// size the collection correctly
<< "(" << (ttype->is_list() ? "" : "2*") << obj << ".size"
<< ");" << '\n';
// For loop iterates over elements
string i = tmp("_i");
indent(out) << "for (int " << i << " = 0; " << i << " < " << obj << ".size"
<< "; "
<< "++" << i << ")" << '\n';
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) << "iprot.readMapEnd();" << '\n';
} else if (ttype->is_set()) {
indent(out) << "iprot.readSetEnd();" << '\n';
} else if (ttype->is_list()) {
indent(out) << "iprot.readListEnd();" << '\n';
}
scope_down(out);
}
/**
* Generates code to deserialize a map
*/
void t_javame_generator::generate_deserialize_map_element(ostream& 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) << '\n';
indent(out) << declare_field(&fval) << '\n';
generate_deserialize_field(out, &fkey);
generate_deserialize_field(out, &fval);
indent(out) << prefix << ".put(" << box_type(tmap->get_key_type(), key) << ", "
<< box_type(tmap->get_val_type(), val) << ");" << '\n';
}
/**
* Deserializes a set element
*/
void t_javame_generator::generate_deserialize_set_element(ostream& out,
t_set* tset,
string prefix) {
string elem = tmp("_elem");
t_field felem(tset->get_elem_type(), elem);
indent(out) << declare_field(&felem) << '\n';
generate_deserialize_field(out, &felem);
indent(out) << prefix << ".put(" << box_type(tset->get_elem_type(), elem) << ", "
<< box_type(tset->get_elem_type(), elem) << ");" << '\n';
}
/**
* Deserializes a list element
*/
void t_javame_generator::generate_deserialize_list_element(ostream& out,
t_list* tlist,
string prefix) {
string elem = tmp("_elem");
t_field felem(tlist->get_elem_type(), elem);
indent(out) << declare_field(&felem) << '\n';
generate_deserialize_field(out, &felem);
indent(out) << prefix << ".addElement(" << box_type(tlist->get_elem_type(), elem) << ");" << '\n';
}
/**
* Serializes a field of any type.
*
* @param tfield The field to serialize
* @param prefix Name to prepend to field name
*/
void t_javame_generator::generate_serialize_field(ostream& 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_enum()) {
indent(out) << "oprot.writeI32(" << prefix + tfield->get_name() << ".getValue());" << '\n';
} else if (type->is_base_type()) {
string name = prefix + tfield->get_name();
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:
if (type->is_binary()) {
out << "writeBinary(" << name << ");";
} else {
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 Java name for base type " + t_base_type::t_base_name(tbase);
}
} else if (type->is_enum()) {
out << "writeI32(" << name << ");";
}
out << '\n';
} else {
printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s%s' TYPE '%s'\n",
prefix.c_str(),
tfield->get_name().c_str(),
type_name(type).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_javame_generator::generate_serialize_struct(ostream& out,
t_struct* tstruct,
string prefix) {
(void)tstruct;
out << indent() << prefix << ".write(oprot);" << '\n';
}
/**
* Serializes a container by writing its size then the elements.
*
* @param ttype The type of container
* @param prefix String prefix for fields
*/
void t_javame_generator::generate_serialize_container(ostream& out, t_type* ttype, string prefix) {
scope_up(out);
if (ttype->is_map()) {
indent(out) << "oprot.writeMapBegin(new TMap(" << type_to_enum(((t_map*)ttype)->get_key_type())
<< ", " << type_to_enum(((t_map*)ttype)->get_val_type()) << ", " << prefix
<< ".size()));" << '\n';
} else if (ttype->is_set()) {
indent(out) << "oprot.writeSetBegin(new TSet(" << type_to_enum(((t_set*)ttype)->get_elem_type())
<< ", " << prefix << ".size()));" << '\n';
} else if (ttype->is_list()) {
indent(out) << "oprot.writeListBegin(new TList("
<< type_to_enum(((t_list*)ttype)->get_elem_type()) << ", " << prefix << ".size()));"
<< '\n';
}
string iter = tmp("_iter");
if (ttype->is_map()) {
string enumer = iter + "_enum";
string key_type = type_name(((t_map*)ttype)->get_key_type(), true, false);
indent(out) << "for (Enumeration " << enumer << " = " << prefix << ".keys(); " << enumer
<< ".hasMoreElements(); ) ";
scope_up(out);
indent(out) << key_type << " " << iter << " = (" << key_type << ")" << enumer
<< ".nextElement();" << '\n';
} else if (ttype->is_set()) {
string enumer = iter + "_enum";
string ele_type = type_name(((t_list*)ttype)->get_elem_type(), true);
indent(out) << "for (Enumeration " << enumer << " = " << prefix << ".keys(); " << enumer
<< ".hasMoreElements(); ) ";
scope_up(out);
indent(out) << ele_type << " " << iter << " = (" << ele_type << ")" << enumer
<< ".nextElement();" << '\n';
} else if (ttype->is_list()) {
string enumer = iter + "_enum";
indent(out) << "for (Enumeration " << enumer << " = " << prefix << ".elements(); " << enumer
<< ".hasMoreElements(); ) ";
scope_up(out);
string ele_type = type_name(((t_list*)ttype)->get_elem_type(), true);
indent(out) << ele_type << " " << iter << " = (" << ele_type << ")" << enumer
<< ".nextElement();" << '\n';
}
if (ttype->is_map()) {
generate_serialize_map_element(out, (t_map*)ttype, iter, prefix);
} else if (ttype->is_set()) {
generate_serialize_set_element(out, (t_set*)ttype, iter);
} else if (ttype->is_list()) {
generate_serialize_list_element(out, (t_list*)ttype, iter);
}
scope_down(out);
if (ttype->is_map()) {
indent(out) << "oprot.writeMapEnd();" << '\n';
} else if (ttype->is_set()) {
indent(out) << "oprot.writeSetEnd();" << '\n';
} else if (ttype->is_list()) {
indent(out) << "oprot.writeListEnd();" << '\n';
}
scope_down(out);
}
/**
* Serializes the members of a map.
*/
void t_javame_generator::generate_serialize_map_element(ostream& out,
t_map* tmap,
string iter,
string map) {
t_field kfield(tmap->get_key_type(), iter);
generate_serialize_field(out, &kfield, "");
string val_type = type_name(tmap->get_val_type(), true, false);
t_field vfield(tmap->get_val_type(), "((" + val_type + ")" + map + ".get(" + iter + "))");
generate_serialize_field(out, &vfield, "");
}
/**
* Serializes the members of a set.
*/
void t_javame_generator::generate_serialize_set_element(ostream& 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_javame_generator::generate_serialize_list_element(ostream& out,
t_list* tlist,
string iter) {
t_field efield(tlist->get_elem_type(), iter);
generate_serialize_field(out, &efield, "");
}
/**
* Returns a Java type name
*
* @param ttype The type
* @param container Is the type going inside a container?
* @return Java type name, i.e. Vector
*/
string t_javame_generator::type_name(t_type* ttype,
bool in_container,
bool in_init,
bool skip_generic) {
(void)in_init;
(void)skip_generic;
// In Java typedefs are just resolved to their real type
ttype = get_true_type(ttype);
string prefix;
if (ttype->is_base_type()) {
return base_type_name((t_base_type*)ttype, in_container);
} else if (ttype->is_map()) {
return "Hashtable";
} else if (ttype->is_set()) {
return "Hashtable";
} else if (ttype->is_list()) {
return "Vector";
}
// Check for namespacing
t_program* program = ttype->get_program();
if (program != nullptr && program != program_) {
string package = program->get_namespace("java");
if (!package.empty()) {
return package + "." + ttype->get_name();
}
}
return ttype->get_name();
}
/**
* Returns the C++ type that corresponds to the thrift type.
*
* @param tbase The base type
* @param container Is it going in a Java container?
*/
string t_javame_generator::base_type_name(t_base_type* type, bool in_container) {
t_base_type::t_base tbase = type->get_base();
switch (tbase) {
case t_base_type::TYPE_VOID:
return "void";
case t_base_type::TYPE_STRING:
if (!type->is_binary()) {
return "String";
} else {
return "byte[]";
}
case t_base_type::TYPE_BOOL:
return (in_container ? "Boolean" : "boolean");
case t_base_type::TYPE_I8:
return (in_container ? "Byte" : "byte");
case t_base_type::TYPE_I16:
return (in_container ? "Short" : "short");
case t_base_type::TYPE_I32:
return (in_container ? "Integer" : "int");
case t_base_type::TYPE_I64:
return (in_container ? "Long" : "long");
case t_base_type::TYPE_DOUBLE:
return (in_container ? "Double" : "double");
default:
throw "compiler error: no Java name for base type " + t_base_type::t_base_name(tbase);
}
}
/**
* Declares a field, which may include initialization as necessary.
*
* @param ttype The type
*/
string t_javame_generator::declare_field(t_field* tfield, bool init) {
// TODO(mcslee): do we ever need to initialize the field?
string result = type_name(tfield->get_type()) + " " + tfield->get_name();
if (init) {
t_type* ttype = get_true_type(tfield->get_type());
if (ttype->is_base_type() && tfield->get_value() != nullptr) {
std::ofstream dummy;
result += " = " + render_const_value(dummy, tfield->get_name(), ttype, tfield->get_value());
} else if (ttype->is_base_type()) {
t_base_type::t_base tbase = ((t_base_type*)ttype)->get_base();
switch (tbase) {
case t_base_type::TYPE_VOID:
throw "NO T_VOID CONSTRUCT";
case t_base_type::TYPE_STRING:
result += " = null";
break;
case t_base_type::TYPE_BOOL:
result += " = false";
break;
case t_base_type::TYPE_I8:
case t_base_type::TYPE_I16:
case t_base_type::TYPE_I32:
case t_base_type::TYPE_I64:
result += " = 0";
break;
case t_base_type::TYPE_DOUBLE:
result += " = (double)0";
break;
default:
throw "compiler error: unhandled type";
}
} else if (ttype->is_enum()) {
result += " = 0";
} else if (ttype->is_container()) {
result += " = new " + type_name(ttype, false, true) + "()";
} else {
result += " = new " + type_name(ttype, false, true) + "()";
;
}
}
return result + ";";
}
/**
* Renders a function signature of the form 'type name(args)'
*
* @param tfunction Function definition
* @return String of rendered function definition
*/
string t_javame_generator::function_signature(t_function* tfunction, string prefix) {
t_type* ttype = tfunction->get_returntype();
std::string result = type_name(ttype) + " " + prefix + tfunction->get_name() + "("
+ argument_list(tfunction->get_arglist()) + ") throws ";
t_struct* xs = tfunction->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) {
result += type_name((*x_iter)->get_type(), false, false) + ", ";
}
result += "TException";
return result;
}
/**
* Renders a comma separated field list, with type names
*/
string t_javame_generator::argument_list(t_struct* tstruct, bool include_types) {
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 += ", ";
}
if (include_types) {
result += type_name((*f_iter)->get_type()) + " ";
}
result += (*f_iter)->get_name();
}
return result;
}
/**
* Converts the parse type to a C++ enum string for the given type.
*/
string t_javame_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";
default:
throw "compiler error: unhandled type";
}
} 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();
}
/**
* Applies the correct style to a string based on the value of nocamel_style_
*/
std::string t_javame_generator::get_cap_name(std::string name) {
name[0] = toupper(name[0]);
return name;
}
string t_javame_generator::constant_name(string name) {
string constant_name;
bool is_first = true;
bool was_previous_char_upper = false;
for (char character : name) {
bool is_upper = isupper(character);
if (is_upper && !is_first && !was_previous_char_upper) {
constant_name += '_';
}
constant_name += toupper(character);
is_first = false;
was_previous_char_upper = is_upper;
}
return constant_name;
}
void t_javame_generator::generate_java_docstring_comment(ostream& out, string contents) {
generate_docstring_comment(out, "/**\n", " * ", contents, " */\n");
}
void t_javame_generator::generate_java_doc(ostream& out, t_field* field) {
if (field->get_type()->is_enum()) {
string combined_message = field->get_doc() + "\n@see " + get_enum_class_name(field->get_type());
generate_java_docstring_comment(out, combined_message);
} else {
generate_java_doc(out, (t_doc*)field);
}
}
/**
* Emits a JavaDoc comment if the provided object has a doc in Thrift
*/
void t_javame_generator::generate_java_doc(ostream& out, t_doc* tdoc) {
if (tdoc->has_doc()) {
generate_java_docstring_comment(out, tdoc->get_doc());
}
}
/**
* Emits a JavaDoc comment if the provided function object has a doc in Thrift
*/
void t_javame_generator::generate_java_doc(ostream& out, t_function* tfunction) {
if (tfunction->has_doc()) {
stringstream ss;
ss << tfunction->get_doc();
const vector<t_field*>& fields = tfunction->get_arglist()->get_members();
vector<t_field*>::const_iterator p_iter;
for (p_iter = fields.begin(); p_iter != fields.end(); ++p_iter) {
t_field* p = *p_iter;
ss << "\n@param " << p->get_name();
if (p->has_doc()) {
ss << " " << p->get_doc();
}
}
generate_docstring_comment(out, "/**\n", " * ", ss.str(), " */\n");
}
}
void t_javame_generator::generate_deep_copy_container(ostream& out,
std::string source_name_p1,
std::string source_name_p2,
std::string result_name,
t_type* type) {
t_container* container = (t_container*)type;
std::string source_name;
if (source_name_p2 == "")
source_name = source_name_p1;
else
source_name = source_name_p1 + "." + source_name_p2;
indent(out) << type_name(type, true, false) << " " << result_name << " = new "
<< type_name(container, false, true) << "();" << '\n';
std::string iterator_element_name = source_name_p1 + "_element";
std::string enumeration_name = source_name_p1 + "_enum";
std::string result_element_name = result_name + "_copy";
if (container->is_map()) {
t_type* key_type = ((t_map*)container)->get_key_type();
t_type* val_type = ((t_map*)container)->get_val_type();
indent(out) << "for (Enumeration " << enumeration_name << " = " << source_name << ".keys(); "
<< enumeration_name << ".hasMoreElements(); ) {" << '\n';
indent_up();
out << '\n';
indent(out) << type_name(key_type, true, false) << " " << iterator_element_name << "_key = ("
<< type_name(key_type, true, false) << ")" << enumeration_name << ".nextElement();"
<< '\n';
indent(out) << type_name(val_type, true, false) << " " << iterator_element_name << "_value = ("
<< type_name(val_type, true, false) << ")" << source_name << ".get("
<< iterator_element_name << "_key);" << '\n';
out << '\n';
if (key_type->is_container()) {
generate_deep_copy_container(out,
iterator_element_name + "_key",
"",
result_element_name + "_key",
key_type);
} else {
indent(out) << type_name(key_type, true, false) << " " << result_element_name << "_key = ";
generate_deep_copy_non_container(out,
iterator_element_name + "_key",
result_element_name + "_key",
key_type);
out << ";" << '\n';
}
out << '\n';
if (val_type->is_container()) {
generate_deep_copy_container(out,
iterator_element_name + "_value",
"",
result_element_name + "_value",
val_type);
} else {
indent(out) << type_name(val_type, true, false) << " " << result_element_name << "_value = ";
generate_deep_copy_non_container(out,
iterator_element_name + "_value",
result_element_name + "_value",
val_type);
out << ";" << '\n';
}
out << '\n';
indent(out) << result_name << ".put(" << result_element_name << "_key, " << result_element_name
<< "_value);" << '\n';
indent_down();
indent(out) << "}" << '\n';
} else {
t_type* elem_type;
if (container->is_set()) {
elem_type = ((t_set*)container)->get_elem_type();
} else {
elem_type = ((t_list*)container)->get_elem_type();
}
indent(out) << "for (Enumeration " << enumeration_name << " = " << source_name
<< ".elements(); " << enumeration_name << ".hasMoreElements(); ) {" << '\n';
indent_up();
indent(out) << type_name(elem_type, true, false) << " " << iterator_element_name << " = ("
<< type_name(elem_type, true, false) << ")" << enumeration_name << ".nextElement();"
<< '\n';
if (elem_type->is_container()) {
// recursive deep copy
generate_deep_copy_container(out, iterator_element_name, "", result_element_name, elem_type);
if (elem_type->is_list()) {
indent(out) << result_name << ".addElement(" << result_element_name << ");" << '\n';
} else {
indent(out) << result_name << ".put(" << result_element_name << ", " << result_element_name
<< ");" << '\n';
}
} else {
// iterative copy
if (elem_type->is_binary()) {
indent(out) << type_name(elem_type, true, false) << " temp_binary_element = ";
generate_deep_copy_non_container(out,
iterator_element_name,
"temp_binary_element",
elem_type);
out << ";" << '\n';
if (elem_type->is_list()) {
indent(out) << result_name << ".addElement(temp_binary_element);" << '\n';
} else {
indent(out) << result_name << ".put(temp_binary_element, temp_binary_element);" << '\n';
}
} else {
indent(out) << result_name << ".addElement(";
generate_deep_copy_non_container(out, iterator_element_name, result_name, elem_type);
out << ");" << '\n';
}
}
indent_down();
indent(out) << "}" << '\n';
}
}
void t_javame_generator::generate_deep_copy_non_container(ostream& out,
std::string source_name,
std::string dest_name,
t_type* type) {
if (type->is_base_type() || type->is_enum() || type->is_typedef()) {
// binary fields need to be copied with System.arraycopy
if (type->is_binary()) {
out << "new byte[" << source_name << ".length];" << '\n';
indent(out) << "System.arraycopy(" << source_name << ", 0, " << dest_name << ", 0, "
<< source_name << ".length)";
}
// everything else can be copied directly
else
out << source_name;
} else {
out << "new " << type_name(type, true, true) << "(" << source_name << ")";
}
}
std::string t_javame_generator::generate_isset_check(t_field* field) {
return generate_isset_check(field->get_name());
}
std::string t_javame_generator::isset_field_id(t_field* field) {
return "__" + upcase_string(field->get_name() + "_isset_id");
}
std::string t_javame_generator::generate_isset_check(std::string field_name) {
return "is" + get_cap_name("set") + get_cap_name(field_name) + "()";
}
void t_javame_generator::generate_isset_set(ostream& out, t_field* field) {
if (!type_can_be_null(field->get_type())) {
indent(out) << "set" << get_cap_name(field->get_name()) << get_cap_name("isSet") << "(true);"
<< '\n';
}
}
std::string t_javame_generator::get_enum_class_name(t_type* type) {
string package = "";
t_program* program = type->get_program();
if (program != nullptr && program != program_) {
package = program->get_namespace("java") + ".";
}
return package + type->get_name();
}
void t_javame_generator::generate_struct_desc(ostream& out, t_struct* tstruct) {
indent(out) << "private static final TStruct STRUCT_DESC = new TStruct(\"" << tstruct->get_name()
<< "\");" << '\n';
}
void t_javame_generator::generate_field_descs(ostream& out, t_struct* tstruct) {
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
indent(out) << "private static final TField " << constant_name((*m_iter)->get_name())
<< "_FIELD_DESC = new TField(\"" << (*m_iter)->get_name() << "\", "
<< type_to_enum((*m_iter)->get_type()) << ", "
<< "(short)" << (*m_iter)->get_key() << ");" << '\n';
}
}
bool t_javame_generator::has_bit_vector(t_struct* tstruct) {
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
if (!type_can_be_null(get_true_type((*m_iter)->get_type()))) {
return true;
}
}
return false;
}
void t_javame_generator::generate_java_struct_clear(std::ostream& out, t_struct* tstruct) {
indent(out) << "public void clear() {" << '\n';
const vector<t_field*>& members = tstruct->get_members();
vector<t_field*>::const_iterator m_iter;
indent_up();
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() != nullptr) {
print_const_value(out,
"this." + (*m_iter)->get_name(),
t,
(*m_iter)->get_value(),
true,
true);
} else {
if (type_can_be_null(t)) {
indent(out) << "this." << (*m_iter)->get_name() << " = null;" << '\n';
} else {
// must be a base type
// means it also needs to be explicitly unset
indent(out) << "set" << get_cap_name((*m_iter)->get_name()) << get_cap_name("isSet")
<< "(false);" << '\n';
switch (((t_base_type*)t)->get_base()) {
case t_base_type::TYPE_I8:
case t_base_type::TYPE_I16:
case t_base_type::TYPE_I32:
case t_base_type::TYPE_I64:
indent(out) << "this." << (*m_iter)->get_name() << " = 0;" << '\n';
break;
case t_base_type::TYPE_DOUBLE:
indent(out) << "this." << (*m_iter)->get_name() << " = 0.0;" << '\n';
break;
case t_base_type::TYPE_BOOL:
indent(out) << "this." << (*m_iter)->get_name() << " = false;" << '\n';
break;
default: // prevent gcc compiler warning
break;
}
}
}
}
indent_down();
indent(out) << "}" << '\n' << '\n';
}
std::string t_javame_generator::display_name() const {
return "Java ME";
}
THRIFT_REGISTER_GENERATOR(javame, "Java ME", "")