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Posted to commits@thrift.apache.org by ns...@apache.org on 2016/09/25 16:42:53 UTC
[04/55] [abbrv] [partial] thrift git commit: THRIFT-2835 Add
possibility to distribute generators separately from thrift core,
and load them dynamically
http://git-wip-us.apache.org/repos/asf/thrift/blob/052abc39/compiler/cpp/src/thrift/generate/t_perl_generator.cc
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diff --git a/compiler/cpp/src/thrift/generate/t_perl_generator.cc b/compiler/cpp/src/thrift/generate/t_perl_generator.cc
new file mode 100644
index 0000000..bfe08f9
--- /dev/null
+++ b/compiler/cpp/src/thrift/generate/t_perl_generator.cc
@@ -0,0 +1,1648 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include <string>
+#include <fstream>
+#include <iostream>
+#include <vector>
+#include <list>
+
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sstream>
+#include "thrift/platform.h"
+#include "thrift/version.h"
+#include "thrift/generate/t_oop_generator.h"
+
+using std::map;
+using std::ofstream;
+using std::ostringstream;
+using std::string;
+using std::stringstream;
+using std::vector;
+
+static const string endl = "\n"; // avoid ostream << std::endl flushes
+
+/**
+ * PERL code generator.
+ *
+ */
+class t_perl_generator : public t_oop_generator {
+public:
+ t_perl_generator(t_program* program,
+ const std::map<std::string, std::string>& parsed_options,
+ const std::string& option_string)
+ : t_oop_generator(program) {
+ (void)option_string;
+ std::map<std::string, std::string>::const_iterator iter;
+
+ /* no options yet */
+ for( iter = parsed_options.begin(); iter != parsed_options.end(); ++iter) {
+ throw "unknown option perl:" + iter->first;
+ }
+
+ out_dir_base_ = "gen-perl";
+ escape_['$'] = "\\$";
+ escape_['@'] = "\\@";
+ }
+
+ /**
+ * Init and close methods
+ */
+
+ void init_generator();
+ void close_generator();
+
+ /**
+ * Program-level generation functions
+ */
+
+ void generate_typedef(t_typedef* ttypedef);
+ void generate_enum(t_enum* tenum);
+ void generate_const(t_const* tconst);
+ void generate_struct(t_struct* tstruct);
+ void generate_xception(t_struct* txception);
+ void generate_service(t_service* tservice);
+
+ std::string render_const_value(t_type* type, t_const_value* value);
+
+ /**
+ * Structs!
+ */
+
+ void generate_perl_struct(t_struct* tstruct, bool is_exception);
+ void generate_perl_struct_definition(std::ofstream& out,
+ t_struct* tstruct,
+ bool is_xception = false);
+ void generate_perl_struct_reader(std::ofstream& out, t_struct* tstruct);
+ void generate_perl_struct_writer(std::ofstream& out, t_struct* tstruct);
+ void generate_perl_function_helpers(t_function* tfunction);
+
+ /**
+ * Service-level generation functions
+ */
+
+ void generate_service_helpers(t_service* tservice);
+ void generate_service_interface(t_service* tservice);
+ void generate_service_rest(t_service* tservice);
+ void generate_service_client(t_service* tservice);
+ void generate_service_processor(t_service* tservice);
+ void generate_process_function(t_service* tservice, t_function* tfunction);
+
+ /**
+ * Serialization constructs
+ */
+
+ void generate_deserialize_field(std::ofstream& out,
+ t_field* tfield,
+ std::string prefix = "",
+ bool inclass = false);
+
+ void generate_deserialize_struct(std::ofstream& out, t_struct* tstruct, std::string prefix = "");
+
+ void generate_deserialize_container(std::ofstream& out, t_type* ttype, std::string prefix = "");
+
+ void generate_deserialize_set_element(std::ofstream& out, t_set* tset, std::string prefix = "");
+
+ void generate_deserialize_map_element(std::ofstream& out, t_map* tmap, std::string prefix = "");
+
+ void generate_deserialize_list_element(std::ofstream& out,
+ t_list* tlist,
+ std::string prefix = "");
+
+ void generate_serialize_field(std::ofstream& out, t_field* tfield, std::string prefix = "");
+
+ void generate_serialize_struct(std::ofstream& out, t_struct* tstruct, std::string prefix = "");
+
+ void generate_serialize_container(std::ofstream& out, t_type* ttype, std::string prefix = "");
+
+ void generate_serialize_map_element(std::ofstream& out,
+ t_map* tmap,
+ std::string kiter,
+ std::string viter);
+
+ void generate_serialize_set_element(std::ofstream& out, t_set* tmap, std::string iter);
+
+ void generate_serialize_list_element(std::ofstream& out, t_list* tlist, std::string iter);
+
+ /**
+ * Helper rendering functions
+ */
+
+ std::string perl_includes();
+ std::string declare_field(t_field* tfield, bool init = false, bool obj = false);
+ std::string function_signature(t_function* tfunction, std::string prefix = "");
+ std::string argument_list(t_struct* tstruct);
+ std::string type_to_enum(t_type* ttype);
+
+ std::string autogen_comment() {
+ return std::string("#\n") + "# Autogenerated by Thrift Compiler (" + THRIFT_VERSION + ")\n"
+ + "#\n" + "# DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING\n" + "#\n";
+ }
+
+ void perl_namespace_dirs(t_program* p, std::list<std::string>& dirs) {
+ std::string ns = p->get_namespace("perl");
+ std::string::size_type loc;
+
+ if (ns.size() > 0) {
+ while ((loc = ns.find(".")) != std::string::npos) {
+ dirs.push_back(ns.substr(0, loc));
+ ns = ns.substr(loc + 1);
+ }
+ }
+
+ if (ns.size() > 0) {
+ dirs.push_back(ns);
+ }
+ }
+
+ std::string perl_namespace(t_program* p) {
+ std::string ns = p->get_namespace("perl");
+ std::string result = "";
+ std::string::size_type loc;
+
+ if (ns.size() > 0) {
+ while ((loc = ns.find(".")) != std::string::npos) {
+ result += ns.substr(0, loc);
+ result += "::";
+ ns = ns.substr(loc + 1);
+ }
+
+ if (ns.size() > 0) {
+ result += ns + "::";
+ }
+ }
+
+ return result;
+ }
+
+ std::string get_namespace_out_dir() {
+ std::string outdir = get_out_dir();
+ std::list<std::string> dirs;
+ perl_namespace_dirs(program_, dirs);
+ std::list<std::string>::iterator it;
+ for (it = dirs.begin(); it != dirs.end(); it++) {
+ outdir += *it + "/";
+ }
+ return outdir;
+ }
+
+private:
+ /**
+ * File streams
+ */
+ std::ofstream f_types_;
+ std::ofstream f_consts_;
+ std::ofstream f_helpers_;
+ std::ofstream f_service_;
+};
+
+/**
+ * Prepares for file generation by opening up the necessary file output
+ * streams.
+ *
+ * @param tprogram The program to generate
+ */
+void t_perl_generator::init_generator() {
+ // Make output directory
+ MKDIR(get_out_dir().c_str());
+
+ string outdir = get_out_dir();
+ std::list<std::string> dirs;
+ perl_namespace_dirs(program_, dirs);
+ std::list<std::string>::iterator it;
+ for (it = dirs.begin(); it != dirs.end(); it++) {
+ outdir += *it + "/";
+ MKDIR(outdir.c_str());
+ }
+
+ // Make output file
+ string f_types_name = outdir + "Types.pm";
+ f_types_.open(f_types_name.c_str());
+ string f_consts_name = outdir + "Constants.pm";
+ f_consts_.open(f_consts_name.c_str());
+
+ // Print header
+ f_types_ << autogen_comment() << perl_includes();
+
+ // Print header
+ f_consts_ << autogen_comment() << "package " << perl_namespace(program_) << "Constants;" << endl
+ << perl_includes() << endl;
+}
+
+/**
+ * Prints standard java imports
+ */
+string t_perl_generator::perl_includes() {
+ string inc;
+
+ inc = "require 5.6.0;\n";
+ inc += "use strict;\n";
+ inc += "use warnings;\n";
+ inc += "use Thrift;\n\n";
+
+ return inc;
+}
+
+/**
+ * Close up (or down) some filez.
+ */
+void t_perl_generator::close_generator() {
+ // Close types file
+ f_types_ << "1;" << endl;
+ f_types_.close();
+
+ f_consts_ << "1;" << endl;
+ f_consts_.close();
+}
+
+/**
+ * Generates a typedef. This is not done in PERL, types are all implicit.
+ *
+ * @param ttypedef The type definition
+ */
+void t_perl_generator::generate_typedef(t_typedef* ttypedef) {
+ (void)ttypedef;
+}
+
+/**
+ * Generates code for an enumerated type. Since define is expensive to lookup
+ * in PERL, we use a global array for this.
+ *
+ * @param tenum The enumeration
+ */
+void t_perl_generator::generate_enum(t_enum* tenum) {
+ f_types_ << "package " << perl_namespace(program_) << tenum->get_name() << ";" << endl;
+
+ vector<t_enum_value*> constants = tenum->get_constants();
+ vector<t_enum_value*>::iterator c_iter;
+ for (c_iter = constants.begin(); c_iter != constants.end(); ++c_iter) {
+ int value = (*c_iter)->get_value();
+ f_types_ << "use constant " << (*c_iter)->get_name() << " => " << value << ";" << endl;
+ }
+}
+
+/**
+ * Generate a constant value
+ */
+void t_perl_generator::generate_const(t_const* tconst) {
+ t_type* type = tconst->get_type();
+ string name = tconst->get_name();
+ t_const_value* value = tconst->get_value();
+
+ f_consts_ << "use constant " << name << " => ";
+ f_consts_ << render_const_value(type, value);
+ f_consts_ << ";" << endl << endl;
+}
+
+/**
+ * Prints the value of a constant with the given type. Note that type checking
+ * is NOT performed in this function as it is always run beforehand using the
+ * validate_types method in main.cc
+ */
+string t_perl_generator::render_const_value(t_type* type, t_const_value* value) {
+ std::ostringstream out;
+
+ type = get_true_type(type);
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_STRING:
+ out << '"' << get_escaped_string(value) << '"';
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << (value->get_integer() > 0 ? "1" : "0");
+ 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:
+ out << value->get_integer();
+ break;
+ case t_base_type::TYPE_DOUBLE:
+ if (value->get_type() == t_const_value::CV_INTEGER) {
+ out << value->get_integer();
+ } else {
+ out << value->get_double();
+ }
+ break;
+ default:
+ throw "compiler error: no const of base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << value->get_integer();
+ } else if (type->is_struct() || type->is_xception()) {
+ out << "new " << perl_namespace(type->get_program()) << type->get_name() << "({" << endl;
+ indent_up();
+ const vector<t_field*>& fields = ((t_struct*)type)->get_members();
+ vector<t_field*>::const_iterator f_iter;
+ const map<t_const_value*, t_const_value*>& val = value->get_map();
+ map<t_const_value*, t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
+ t_type* field_type = NULL;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ if ((*f_iter)->get_name() == v_iter->first->get_string()) {
+ field_type = (*f_iter)->get_type();
+ }
+ }
+ if (field_type == NULL) {
+ throw "type error: " + type->get_name() + " has no field " + v_iter->first->get_string();
+ }
+ out << render_const_value(g_type_string, v_iter->first);
+ out << " => ";
+ out << render_const_value(field_type, v_iter->second);
+ out << ",";
+ out << endl;
+ }
+
+ out << "})";
+ } else if (type->is_map()) {
+ t_type* ktype = ((t_map*)type)->get_key_type();
+ t_type* vtype = ((t_map*)type)->get_val_type();
+ out << "{" << endl;
+
+ const map<t_const_value*, t_const_value*>& val = value->get_map();
+ map<t_const_value*, t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
+ out << render_const_value(ktype, v_iter->first);
+ out << " => ";
+ out << render_const_value(vtype, v_iter->second);
+ out << "," << endl;
+ }
+
+ out << "}";
+ } else if (type->is_list() || type->is_set()) {
+ t_type* etype;
+ if (type->is_list()) {
+ etype = ((t_list*)type)->get_elem_type();
+ } else {
+ etype = ((t_set*)type)->get_elem_type();
+ }
+ out << "[" << endl;
+ const vector<t_const_value*>& val = value->get_list();
+ vector<t_const_value*>::const_iterator v_iter;
+ for (v_iter = val.begin(); v_iter != val.end(); ++v_iter) {
+
+ out << render_const_value(etype, *v_iter);
+ if (type->is_set()) {
+ out << " => 1";
+ }
+ out << "," << endl;
+ }
+ out << "]";
+ }
+ return out.str();
+}
+
+/**
+ * Make a struct
+ */
+void t_perl_generator::generate_struct(t_struct* tstruct) {
+ generate_perl_struct(tstruct, false);
+}
+
+/**
+ * Generates a struct definition for a thrift exception. Basically the same
+ * as a struct but extends the Exception class.
+ *
+ * @param txception The struct definition
+ */
+void t_perl_generator::generate_xception(t_struct* txception) {
+ generate_perl_struct(txception, true);
+}
+
+/**
+ * Structs can be normal or exceptions.
+ */
+void t_perl_generator::generate_perl_struct(t_struct* tstruct, bool is_exception) {
+ generate_perl_struct_definition(f_types_, tstruct, is_exception);
+}
+
+/**
+ * Generates a struct definition for a thrift data type. This is nothing in PERL
+ * where the objects are all just associative arrays (unless of course we
+ * decide to start using objects for them...)
+ *
+ * @param tstruct The struct definition
+ */
+void t_perl_generator::generate_perl_struct_definition(ofstream& out,
+ t_struct* tstruct,
+ bool is_exception) {
+ const vector<t_field*>& members = tstruct->get_members();
+ vector<t_field*>::const_iterator m_iter;
+
+ out << "package " << perl_namespace(tstruct->get_program()) << tstruct->get_name() << ";\n";
+ if (is_exception) {
+ out << "use base qw(Thrift::TException);\n";
+ }
+
+ // Create simple acessor methods
+ out << "use base qw(Class::Accessor);\n";
+
+ if (members.size() > 0) {
+ out << perl_namespace(tstruct->get_program()) << tstruct->get_name() << "->mk_accessors( qw( ";
+ for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+ t_type* t = get_true_type((*m_iter)->get_type());
+ if (!t->is_xception()) {
+ out << (*m_iter)->get_name() << " ";
+ }
+ }
+
+ out << ") );\n";
+ }
+
+ out << endl;
+
+ // new()
+ indent_up();
+ out << "sub new {" << endl << indent() << "my $classname = shift;" << endl << indent()
+ << "my $self = {};" << endl << indent() << "my $vals = shift || {};" << endl;
+
+ for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+ string dval = "undef";
+ t_type* t = get_true_type((*m_iter)->get_type());
+ if ((*m_iter)->get_value() != NULL && !(t->is_struct() || t->is_xception())) {
+ dval = render_const_value((*m_iter)->get_type(), (*m_iter)->get_value());
+ }
+ out << indent() << "$self->{" << (*m_iter)->get_name() << "} = " << dval << ";" << endl;
+ }
+
+ // Generate constructor from array
+ if (members.size() > 0) {
+
+ for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+ t_type* t = get_true_type((*m_iter)->get_type());
+ if ((*m_iter)->get_value() != NULL && (t->is_struct() || t->is_xception())) {
+ indent(out) << "$self->{" << (*m_iter)->get_name()
+ << "} = " << render_const_value(t, (*m_iter)->get_value()) << ";" << endl;
+ }
+ }
+
+ out << indent() << "if (UNIVERSAL::isa($vals,'HASH')) {" << endl;
+ indent_up();
+ for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
+ out << indent() << "if (defined $vals->{" << (*m_iter)->get_name() << "}) {" << endl
+ << indent() << " $self->{" << (*m_iter)->get_name() << "} = $vals->{"
+ << (*m_iter)->get_name() << "};" << endl << indent() << "}" << endl;
+ }
+ indent_down();
+ out << indent() << "}" << endl;
+ }
+
+ out << indent() << "return bless ($self, $classname);" << endl;
+ indent_down();
+ out << "}\n\n";
+
+ out << "sub getName {" << endl << indent() << " return '" << tstruct->get_name() << "';" << endl
+ << indent() << "}" << endl << endl;
+
+ generate_perl_struct_reader(out, tstruct);
+ generate_perl_struct_writer(out, tstruct);
+}
+
+/**
+ * Generates the read() method for a struct
+ */
+void t_perl_generator::generate_perl_struct_reader(ofstream& out, t_struct* tstruct) {
+ const vector<t_field*>& fields = tstruct->get_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ out << "sub read {" << endl;
+
+ indent_up();
+
+ out << indent() << "my ($self, $input) = @_;" << endl << indent() << "my $xfer = 0;" << endl
+ << indent() << "my $fname;" << endl << indent() << "my $ftype = 0;" << endl << indent()
+ << "my $fid = 0;" << endl;
+
+ indent(out) << "$xfer += $input->readStructBegin(\\$fname);" << endl;
+
+ // Loop over reading in fields
+ indent(out) << "while (1) " << endl;
+
+ scope_up(out);
+
+ indent(out) << "$xfer += $input->readFieldBegin(\\$fname, \\$ftype, \\$fid);" << endl;
+
+ // Check for field STOP marker and break
+ indent(out) << "if ($ftype == TType::STOP) {" << endl;
+ indent_up();
+ indent(out) << "last;" << endl;
+ indent_down();
+ indent(out) << "}" << endl;
+
+ // Switch statement on the field we are reading
+ indent(out) << "SWITCH: for($fid)" << endl;
+
+ scope_up(out);
+
+ // Generate deserialization code for known cases
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+
+ indent(out) << "/^" << (*f_iter)->get_key() << "$/ && do{";
+ indent(out) << "if ($ftype == " << type_to_enum((*f_iter)->get_type()) << ") {" << endl;
+
+ indent_up();
+ generate_deserialize_field(out, *f_iter, "self->");
+ indent_down();
+
+ indent(out) << "} else {" << endl;
+
+ indent(out) << " $xfer += $input->skip($ftype);" << endl;
+
+ out << indent() << "}" << endl << indent() << "last; };" << endl;
+ }
+ // In the default case we skip the field
+
+ indent(out) << " $xfer += $input->skip($ftype);" << endl;
+
+ scope_down(out);
+
+ indent(out) << "$xfer += $input->readFieldEnd();" << endl;
+
+ scope_down(out);
+
+ indent(out) << "$xfer += $input->readStructEnd();" << endl;
+
+ indent(out) << "return $xfer;" << endl;
+
+ indent_down();
+ out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generates the write() method for a struct
+ */
+void t_perl_generator::generate_perl_struct_writer(ofstream& out, t_struct* tstruct) {
+ string name = tstruct->get_name();
+ const vector<t_field*>& fields = tstruct->get_sorted_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ out << "sub write {" << endl;
+
+ indent_up();
+ indent(out) << "my ($self, $output) = @_;" << endl;
+ indent(out) << "my $xfer = 0;" << endl;
+
+ indent(out) << "$xfer += $output->writeStructBegin('" << name << "');" << endl;
+
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ out << indent() << "if (defined $self->{" << (*f_iter)->get_name() << "}) {" << endl;
+ indent_up();
+
+ indent(out) << "$xfer += $output->writeFieldBegin("
+ << "'" << (*f_iter)->get_name() << "', " << type_to_enum((*f_iter)->get_type())
+ << ", " << (*f_iter)->get_key() << ");" << endl;
+
+ // Write field contents
+ generate_serialize_field(out, *f_iter, "self->");
+
+ indent(out) << "$xfer += $output->writeFieldEnd();" << endl;
+
+ indent_down();
+ indent(out) << "}" << endl;
+ }
+
+ out << indent() << "$xfer += $output->writeFieldStop();" << endl << indent()
+ << "$xfer += $output->writeStructEnd();" << endl;
+
+ out << indent() << "return $xfer;" << endl;
+
+ indent_down();
+ out << indent() << "}" << endl << endl;
+}
+
+/**
+ * Generates a thrift service.
+ *
+ * @param tservice The service definition
+ */
+void t_perl_generator::generate_service(t_service* tservice) {
+ string f_service_name = get_namespace_out_dir() + service_name_ + ".pm";
+ f_service_.open(f_service_name.c_str());
+
+ f_service_ <<
+ /// "package "<<service_name_<<";"<<endl<<
+ autogen_comment() << perl_includes();
+
+ f_service_ << "use " << perl_namespace(tservice->get_program()) << "Types;" << endl;
+
+ t_service* extends_s = tservice->get_extends();
+ if (extends_s != NULL) {
+ f_service_ << "use " << perl_namespace(extends_s->get_program()) << extends_s->get_name() << ";"
+ << endl;
+ }
+
+ f_service_ << endl;
+
+ // Generate the three main parts of the service (well, two for now in PERL)
+ generate_service_helpers(tservice);
+ generate_service_interface(tservice);
+ generate_service_rest(tservice);
+ generate_service_client(tservice);
+ generate_service_processor(tservice);
+
+ // Close service file
+ f_service_ << "1;" << endl;
+ f_service_.close();
+}
+
+/**
+ * Generates a service server definition.
+ *
+ * @param tservice The service to generate a server for.
+ */
+void t_perl_generator::generate_service_processor(t_service* tservice) {
+ // Generate the dispatch methods
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator f_iter;
+
+ string extends = "";
+ string extends_processor = "";
+ t_service* extends_s = tservice->get_extends();
+ if (extends_s != NULL) {
+ extends = perl_namespace(extends_s->get_program()) + extends_s->get_name();
+ extends_processor = "use base qw(" + extends + "Processor);";
+ }
+
+ indent_up();
+
+ // Generate the header portion
+ f_service_ << "package " << perl_namespace(program_) << service_name_ << "Processor;" << endl
+ << endl << "use strict;" << endl << extends_processor << endl << endl;
+
+ if (extends.empty()) {
+ f_service_ << "sub new {" << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my ($classname, $handler) = @_;" << endl << indent()
+ << "my $self = {};" << endl;
+
+ f_service_ << indent() << "$self->{handler} = $handler;" << endl;
+
+ f_service_ << indent() << "return bless ($self, $classname);" << endl;
+
+ indent_down();
+
+ f_service_ << "}" << endl << endl;
+ }
+
+ // Generate the server implementation
+ f_service_ << "sub process {" << endl;
+ indent_up();
+
+ f_service_ << indent() << "my ($self, $input, $output) = @_;" << endl;
+
+ f_service_ << indent() << "my $rseqid = 0;" << endl << indent() << "my $fname = undef;" << endl
+ << indent() << "my $mtype = 0;" << endl << endl;
+
+ f_service_ << indent() << "$input->readMessageBegin(\\$fname, \\$mtype, \\$rseqid);" << endl;
+
+ // HOT: check for method implementation
+ f_service_ << indent() << "my $methodname = 'process_'.$fname;" << endl << indent()
+ << "if (!$self->can($methodname)) {" << endl;
+ indent_up();
+
+ f_service_ << indent() << "$input->skip(TType::STRUCT);" << endl << indent()
+ << "$input->readMessageEnd();" << endl << indent()
+ << "my $x = new TApplicationException('Function '.$fname.' not implemented.', "
+ "TApplicationException::UNKNOWN_METHOD);" << endl << indent()
+ << "$output->writeMessageBegin($fname, TMessageType::EXCEPTION, $rseqid);" << endl
+ << indent() << "$x->write($output);" << endl << indent()
+ << "$output->writeMessageEnd();" << endl << indent()
+ << "$output->getTransport()->flush();" << endl << indent() << "return;" << endl;
+
+ indent_down();
+ f_service_ << indent() << "}" << endl << indent()
+ << "$self->$methodname($rseqid, $input, $output);" << endl << indent() << "return 1;"
+ << endl;
+
+ indent_down();
+
+ f_service_ << "}" << endl << endl;
+
+ // Generate the process subfunctions
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ generate_process_function(tservice, *f_iter);
+ }
+}
+
+/**
+ * Generates a process function definition.
+ *
+ * @param tfunction The function to write a dispatcher for
+ */
+void t_perl_generator::generate_process_function(t_service* tservice, t_function* tfunction) {
+ // Open function
+ f_service_ << "sub process_" << tfunction->get_name() << " {" << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my ($self, $seqid, $input, $output) = @_;" << endl;
+
+ string argsname = perl_namespace(tservice->get_program()) + service_name_ + "_"
+ + tfunction->get_name() + "_args";
+ string resultname = perl_namespace(tservice->get_program()) + service_name_ + "_"
+ + tfunction->get_name() + "_result";
+
+ f_service_ << indent() << "my $args = new " << argsname << "();" << endl << indent()
+ << "$args->read($input);" << endl;
+
+ f_service_ << indent() << "$input->readMessageEnd();" << endl;
+
+ 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() << "my $result = new " << resultname << "();" << endl;
+ }
+
+ // Try block for a function with exceptions
+ if (xceptions.size() > 0) {
+ f_service_ << indent() << "eval {" << endl;
+ indent_up();
+ }
+
+ // Generate the function call
+ t_struct* arg_struct = tfunction->get_arglist();
+ const std::vector<t_field*>& fields = arg_struct->get_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ f_service_ << indent();
+ if (!tfunction->is_oneway() && !tfunction->get_returntype()->is_void()) {
+ f_service_ << "$result->{success} = ";
+ }
+ f_service_ << "$self->{handler}->" << tfunction->get_name() << "(";
+ bool first = true;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ if (first) {
+ first = false;
+ } else {
+ f_service_ << ", ";
+ }
+ f_service_ << "$args->" << (*f_iter)->get_name();
+ }
+ f_service_ << ");" << endl;
+
+ if (!tfunction->is_oneway() && xceptions.size() > 0) {
+ indent_down();
+ for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) {
+ f_service_ << indent() << "}; if( UNIVERSAL::isa($@,'"
+ << perl_namespace((*x_iter)->get_type()->get_program())
+ << (*x_iter)->get_type()->get_name() << "') ){ " << endl;
+
+ indent_up();
+ f_service_ << indent() << "$result->{" << (*x_iter)->get_name() << "} = $@;" << endl;
+ f_service_ << indent() << "$@ = undef;" << endl;
+ indent_down();
+ f_service_ << indent();
+ }
+ f_service_ << "}" << endl;
+
+ // catch-all for unexpected exceptions (THRIFT-3191)
+ f_service_ << indent() << "if ($@) {" << endl;
+ indent_up();
+ f_service_ << indent() << "$@ =~ s/^\\s+|\\s+$//g;" << endl
+ << indent() << "my $err = new TApplicationException(\"Unexpected Exception: \" . $@, TApplicationException::INTERNAL_ERROR);" << endl
+ << indent() << "$output->writeMessageBegin('" << tfunction->get_name() << "', TMessageType::EXCEPTION, $seqid);" << endl
+ << indent() << "$err->write($output);" << endl
+ << indent() << "$output->writeMessageEnd();" << endl
+ << indent() << "$output->getTransport()->flush();" << endl
+ << indent() << "$@ = undef;" << endl
+ << indent() << "return;" << endl;
+ indent_down();
+ f_service_ << indent() << "}" << endl;
+ }
+
+ // Shortcut out here for oneway functions
+ if (tfunction->is_oneway()) {
+ f_service_ << indent() << "return;" << endl;
+ indent_down();
+ f_service_ << "}" << endl;
+ return;
+ }
+
+ // Serialize the reply
+ f_service_ << indent() << "$output->writeMessageBegin('" << tfunction->get_name() << "', TMessageType::REPLY, $seqid);" << endl
+ << indent() << "$result->write($output);" << endl
+ << indent() << "$output->writeMessageEnd();" << endl
+ << indent() << "$output->getTransport()->flush();" << endl;
+
+ // Close function
+ indent_down();
+ f_service_ << "}" << endl << endl;
+}
+
+/**
+ * Generates helper functions for a service.
+ *
+ * @param tservice The service to generate a header definition for
+ */
+void t_perl_generator::generate_service_helpers(t_service* tservice) {
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator f_iter;
+
+ f_service_ << "# HELPER FUNCTIONS AND STRUCTURES" << endl << endl;
+
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ t_struct* ts = (*f_iter)->get_arglist();
+ string name = ts->get_name();
+ ts->set_name(service_name_ + "_" + name);
+ generate_perl_struct_definition(f_service_, ts, false);
+ generate_perl_function_helpers(*f_iter);
+ ts->set_name(name);
+ }
+}
+
+/**
+ * Generates a struct and helpers for a function.
+ *
+ * @param tfunction The function
+ */
+void t_perl_generator::generate_perl_function_helpers(t_function* tfunction) {
+ t_struct result(program_, service_name_ + "_" + tfunction->get_name() + "_result");
+ t_field success(tfunction->get_returntype(), "success", 0);
+ if (!tfunction->get_returntype()->is_void()) {
+ result.append(&success);
+ }
+
+ t_struct* xs = tfunction->get_xceptions();
+ const vector<t_field*>& fields = xs->get_members();
+ vector<t_field*>::const_iterator f_iter;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ result.append(*f_iter);
+ }
+
+ generate_perl_struct_definition(f_service_, &result, false);
+}
+
+/**
+ * Generates a service interface definition.
+ *
+ * @param tservice The service to generate a header definition for
+ */
+void t_perl_generator::generate_service_interface(t_service* tservice) {
+ string extends_if = "";
+ t_service* extends_s = tservice->get_extends();
+ if (extends_s != NULL) {
+ extends_if = "use base qw(" + perl_namespace(extends_s->get_program()) + extends_s->get_name()
+ + "If);";
+ }
+
+ f_service_ << "package " << perl_namespace(program_) << service_name_ << "If;" << endl << endl
+ << "use strict;" << endl << extends_if << endl << endl;
+
+ 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) {
+ f_service_ << "sub " << function_signature(*f_iter) << endl << " die 'implement interface';\n}"
+ << endl << endl;
+ }
+ indent_down();
+}
+
+/**
+ * Generates a REST interface
+ */
+void t_perl_generator::generate_service_rest(t_service* tservice) {
+ string extends = "";
+ string extends_if = "";
+ t_service* extends_s = tservice->get_extends();
+ if (extends_s != NULL) {
+ extends = extends_s->get_name();
+ extends_if = "use base qw(" + perl_namespace(extends_s->get_program()) + extends_s->get_name()
+ + "Rest);";
+ }
+ f_service_ << "package " << perl_namespace(program_) << service_name_ << "Rest;" << endl << endl
+ << "use strict;" << endl << extends_if << endl << endl;
+
+ if (extends.empty()) {
+ f_service_ << "sub new {" << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my ($classname, $impl) = @_;" << endl << indent()
+ << "my $self ={ impl => $impl };" << endl << endl << indent()
+ << "return bless($self,$classname);" << endl;
+
+ indent_down();
+
+ f_service_ << "}" << endl << endl;
+ }
+
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::iterator f_iter;
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ f_service_ << "sub " << (*f_iter)->get_name() << "{" << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my ($self, $request) = @_;" << endl << endl;
+
+ const vector<t_field*>& args = (*f_iter)->get_arglist()->get_members();
+ vector<t_field*>::const_iterator a_iter;
+ for (a_iter = args.begin(); a_iter != args.end(); ++a_iter) {
+ t_type* atype = get_true_type((*a_iter)->get_type());
+ string req = "$request->{'" + (*a_iter)->get_name() + "'}";
+ f_service_ << indent() << "my $" << (*a_iter)->get_name() << " = (" << req << ") ? " << req
+ << " : undef;" << endl;
+ if (atype->is_string() && ((t_base_type*)atype)->is_string_list()) {
+ f_service_ << indent() << "my @" << (*a_iter)->get_name() << " = split(/,/, $"
+ << (*a_iter)->get_name() << ");" << endl << indent() << "$"
+ << (*a_iter)->get_name() << " = \\@" << (*a_iter)->get_name() << endl;
+ }
+ }
+ f_service_ << indent() << "return $self->{impl}->" << (*f_iter)->get_name() << "("
+ << argument_list((*f_iter)->get_arglist()) << ");" << endl;
+ indent_down();
+ indent(f_service_) << "}" << endl << endl;
+ }
+}
+
+/**
+ * Generates a service client definition.
+ *
+ * @param tservice The service to generate a server for.
+ */
+void t_perl_generator::generate_service_client(t_service* tservice) {
+ string extends = "";
+ string extends_client = "";
+ t_service* extends_s = tservice->get_extends();
+ if (extends_s != NULL) {
+ extends = perl_namespace(extends_s->get_program()) + extends_s->get_name();
+ extends_client = "use base qw(" + extends + "Client);";
+ }
+
+ f_service_ << "package " << perl_namespace(program_) << service_name_ << "Client;" << endl << endl
+ << extends_client << endl << "use base qw(" << perl_namespace(program_)
+ << service_name_ << "If);" << endl;
+
+ // Constructor function
+ f_service_ << "sub new {" << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my ($classname, $input, $output) = @_;" << endl << indent()
+ << "my $self = {};" << endl;
+
+ if (!extends.empty()) {
+ f_service_ << indent() << "$self = $classname->SUPER::new($input, $output);" << endl;
+ } else {
+ f_service_ << indent() << "$self->{input} = $input;" << endl << indent()
+ << "$self->{output} = defined $output ? $output : $input;" << endl << indent()
+ << "$self->{seqid} = 0;" << endl;
+ }
+
+ f_service_ << indent() << "return bless($self,$classname);" << endl;
+
+ indent_down();
+
+ f_service_ << "}" << endl << endl;
+
+ // Generate client method implementations
+ vector<t_function*> functions = tservice->get_functions();
+ vector<t_function*>::const_iterator f_iter;
+ for (f_iter = functions.begin(); f_iter != functions.end(); ++f_iter) {
+ t_struct* arg_struct = (*f_iter)->get_arglist();
+ const vector<t_field*>& fields = arg_struct->get_members();
+ vector<t_field*>::const_iterator fld_iter;
+ string funname = (*f_iter)->get_name();
+
+ // Open function
+ f_service_ << "sub " << function_signature(*f_iter) << endl;
+
+ indent_up();
+
+ indent(f_service_) << indent() << "$self->send_" << funname << "(";
+
+ bool first = true;
+ for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
+ if (first) {
+ first = false;
+ } else {
+ f_service_ << ", ";
+ }
+ f_service_ << "$" << (*fld_iter)->get_name();
+ }
+ f_service_ << ");" << endl;
+
+ if (!(*f_iter)->is_oneway()) {
+ f_service_ << indent();
+ if (!(*f_iter)->get_returntype()->is_void()) {
+ f_service_ << "return ";
+ }
+ f_service_ << "$self->recv_" << funname << "();" << endl;
+ }
+
+ indent_down();
+
+ f_service_ << "}" << endl << endl;
+
+ f_service_ << "sub send_" << function_signature(*f_iter) << endl;
+
+ indent_up();
+
+ std::string argsname = perl_namespace(tservice->get_program()) + service_name_ + "_"
+ + (*f_iter)->get_name() + "_args";
+
+ // Serialize the request header
+ f_service_ << indent() << "$self->{output}->writeMessageBegin('" << (*f_iter)->get_name()
+ << "', " << ((*f_iter)->is_oneway() ? "TMessageType::ONEWAY" : "TMessageType::CALL")
+ << ", $self->{seqid});" << endl;
+
+ f_service_ << indent() << "my $args = new " << argsname << "();" << endl;
+
+ for (fld_iter = fields.begin(); fld_iter != fields.end(); ++fld_iter) {
+ f_service_ << indent() << "$args->{" << (*fld_iter)->get_name() << "} = $"
+ << (*fld_iter)->get_name() << ";" << endl;
+ }
+
+ // Write to the stream
+ f_service_ << indent() << "$args->write($self->{output});" << endl << indent()
+ << "$self->{output}->writeMessageEnd();" << endl << indent()
+ << "$self->{output}->getTransport()->flush();" << endl;
+
+ indent_down();
+
+ f_service_ << "}" << endl;
+
+ if (!(*f_iter)->is_oneway()) {
+ std::string resultname = perl_namespace(tservice->get_program()) + service_name_ + "_"
+ + (*f_iter)->get_name() + "_result";
+ t_struct noargs(program_);
+
+ t_function recv_function((*f_iter)->get_returntype(),
+ string("recv_") + (*f_iter)->get_name(),
+ &noargs);
+ // Open function
+ f_service_ << endl << "sub " << function_signature(&recv_function) << endl;
+
+ indent_up();
+
+ f_service_ << indent() << "my $rseqid = 0;" << endl << indent() << "my $fname;" << endl
+ << indent() << "my $mtype = 0;" << endl << endl;
+
+ f_service_ << indent() << "$self->{input}->readMessageBegin(\\$fname, \\$mtype, \\$rseqid);"
+ << endl << indent() << "if ($mtype == TMessageType::EXCEPTION) {" << endl
+ << indent() << " my $x = new TApplicationException();" << endl << indent()
+ << " $x->read($self->{input});" << endl << indent()
+ << " $self->{input}->readMessageEnd();" << endl << indent() << " die $x;" << endl
+ << indent() << "}" << endl;
+
+ f_service_ << indent() << "my $result = new " << resultname << "();" << endl << indent()
+ << "$result->read($self->{input});" << endl;
+
+ f_service_ << indent() << "$self->{input}->readMessageEnd();" << endl << endl;
+
+ // Careful, only return result if not a void function
+ if (!(*f_iter)->get_returntype()->is_void()) {
+ f_service_ << indent() << "if (defined $result->{success} ) {" << endl << indent()
+ << " return $result->{success};" << endl << indent() << "}" << endl;
+ }
+
+ t_struct* xs = (*f_iter)->get_xceptions();
+ const std::vector<t_field*>& xceptions = xs->get_members();
+ vector<t_field*>::const_iterator x_iter;
+ for (x_iter = xceptions.begin(); x_iter != xceptions.end(); ++x_iter) {
+ f_service_ << indent() << "if (defined $result->{" << (*x_iter)->get_name() << "}) {"
+ << endl << indent() << " die $result->{" << (*x_iter)->get_name() << "};"
+ << endl << indent() << "}" << endl;
+ }
+
+ // Careful, only return _result if not a void function
+ if ((*f_iter)->get_returntype()->is_void()) {
+ indent(f_service_) << "return;" << endl;
+ } else {
+ f_service_ << indent() << "die \"" << (*f_iter)->get_name() << " failed: unknown result\";"
+ << endl;
+ }
+
+ // Close function
+ indent_down();
+ f_service_ << "}" << endl;
+ }
+ }
+}
+
+/**
+ * Deserializes a field of any type.
+ */
+void t_perl_generator::generate_deserialize_field(ofstream& out,
+ t_field* tfield,
+ string prefix,
+ bool inclass) {
+ (void)inclass;
+ t_type* type = get_true_type(tfield->get_type());
+
+ if (type->is_void()) {
+ throw "CANNOT GENERATE DESERIALIZE CODE FOR void TYPE: " + prefix + tfield->get_name();
+ }
+
+ string name = tfield->get_name();
+
+ // Hack for when prefix is defined (always a hash ref)
+ if (!prefix.empty()) {
+ name = prefix + "{" + tfield->get_name() + "}";
+ }
+
+ if (type->is_struct() || type->is_xception()) {
+ generate_deserialize_struct(out, (t_struct*)type, name);
+ } else if (type->is_container()) {
+ generate_deserialize_container(out, type, name);
+ } else if (type->is_base_type() || type->is_enum()) {
+ indent(out) << "$xfer += $input->";
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "compiler error: cannot serialize void field in a struct: " + name;
+ break;
+ case t_base_type::TYPE_STRING:
+ out << "readString(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << "readBool(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_I8:
+ out << "readByte(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_I16:
+ out << "readI16(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_I32:
+ out << "readI32(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_I64:
+ out << "readI64(\\$" << name << ");";
+ break;
+ case t_base_type::TYPE_DOUBLE:
+ out << "readDouble(\\$" << name << ");";
+ break;
+ default:
+ throw "compiler error: no PERL name for base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << "readI32(\\$" << name << ");";
+ }
+ out << endl;
+
+ } else {
+ printf("DO NOT KNOW HOW TO DESERIALIZE FIELD '%s' TYPE '%s'\n",
+ tfield->get_name().c_str(),
+ type->get_name().c_str());
+ }
+}
+
+/**
+ * Generates an unserializer for a variable. This makes two key assumptions,
+ * first that there is a const char* variable named data that points to the
+ * buffer for deserialization, and that there is a variable protocol which
+ * is a reference to a TProtocol serialization object.
+ */
+void t_perl_generator::generate_deserialize_struct(ofstream& out,
+ t_struct* tstruct,
+ string prefix) {
+ out << indent() << "$" << prefix << " = new " << perl_namespace(tstruct->get_program())
+ << tstruct->get_name() << "();" << endl << indent() << "$xfer += $" << prefix
+ << "->read($input);" << endl;
+}
+
+void t_perl_generator::generate_deserialize_container(ofstream& out, t_type* ttype, string prefix) {
+ scope_up(out);
+
+ string size = tmp("_size");
+ string ktype = tmp("_ktype");
+ string vtype = tmp("_vtype");
+ string etype = tmp("_etype");
+
+ t_field fsize(g_type_i32, size);
+ t_field fktype(g_type_i8, ktype);
+ t_field fvtype(g_type_i8, vtype);
+ t_field fetype(g_type_i8, etype);
+
+ out << indent() << "my $" << size << " = 0;" << endl;
+
+ // Declare variables, read header
+ if (ttype->is_map()) {
+ out << indent() << "$" << prefix << " = {};" << endl << indent() << "my $" << ktype << " = 0;"
+ << endl << indent() << "my $" << vtype << " = 0;" << endl;
+
+ out << indent() << "$xfer += $input->readMapBegin("
+ << "\\$" << ktype << ", \\$" << vtype << ", \\$" << size << ");" << endl;
+
+ } else if (ttype->is_set()) {
+
+ out << indent() << "$" << prefix << " = {};" << endl << indent() << "my $" << etype << " = 0;"
+ << endl << indent() << "$xfer += $input->readSetBegin("
+ << "\\$" << etype << ", \\$" << size << ");" << endl;
+
+ } else if (ttype->is_list()) {
+
+ out << indent() << "$" << prefix << " = [];" << endl << indent() << "my $" << etype << " = 0;"
+ << endl << indent() << "$xfer += $input->readListBegin("
+ << "\\$" << etype << ", \\$" << size << ");" << endl;
+ }
+
+ // For loop iterates over elements
+ string i = tmp("_i");
+ indent(out) << "for (my $" << i << " = 0; $" << i << " < $" << size << "; ++$" << i << ")"
+ << endl;
+
+ scope_up(out);
+
+ if (ttype->is_map()) {
+ generate_deserialize_map_element(out, (t_map*)ttype, prefix);
+ } else if (ttype->is_set()) {
+ generate_deserialize_set_element(out, (t_set*)ttype, prefix);
+ } else if (ttype->is_list()) {
+ generate_deserialize_list_element(out, (t_list*)ttype, prefix);
+ }
+
+ scope_down(out);
+
+ // Read container end
+ if (ttype->is_map()) {
+ indent(out) << "$xfer += $input->readMapEnd();" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "$xfer += $input->readSetEnd();" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "$xfer += $input->readListEnd();" << endl;
+ }
+
+ scope_down(out);
+}
+
+/**
+ * Generates code to deserialize a map
+ */
+void t_perl_generator::generate_deserialize_map_element(ofstream& out, t_map* tmap, string prefix) {
+ string key = tmp("key");
+ string val = tmp("val");
+ t_field fkey(tmap->get_key_type(), key);
+ t_field fval(tmap->get_val_type(), val);
+
+ indent(out) << declare_field(&fkey, true, true) << endl;
+ indent(out) << declare_field(&fval, true, true) << endl;
+
+ generate_deserialize_field(out, &fkey);
+ generate_deserialize_field(out, &fval);
+
+ indent(out) << "$" << prefix << "->{$" << key << "} = $" << val << ";" << endl;
+}
+
+void t_perl_generator::generate_deserialize_set_element(ofstream& out, t_set* tset, string prefix) {
+ string elem = tmp("elem");
+ t_field felem(tset->get_elem_type(), elem);
+
+ indent(out) << "my $" << elem << " = undef;" << endl;
+
+ generate_deserialize_field(out, &felem);
+
+ indent(out) << "$" << prefix << "->{$" << elem << "} = 1;" << endl;
+}
+
+void t_perl_generator::generate_deserialize_list_element(ofstream& out,
+ t_list* tlist,
+ string prefix) {
+ string elem = tmp("elem");
+ t_field felem(tlist->get_elem_type(), elem);
+
+ indent(out) << "my $" << elem << " = undef;" << endl;
+
+ generate_deserialize_field(out, &felem);
+
+ indent(out) << "push(@{$" << prefix << "},$" << elem << ");" << endl;
+}
+
+/**
+ * Serializes a field of any type.
+ *
+ * @param tfield The field to serialize
+ * @param prefix Name to prepend to field name
+ */
+void t_perl_generator::generate_serialize_field(ofstream& out, t_field* tfield, string prefix) {
+ t_type* type = get_true_type(tfield->get_type());
+
+ // Do nothing for void types
+ if (type->is_void()) {
+ throw "CANNOT GENERATE SERIALIZE CODE FOR void TYPE: " + prefix + tfield->get_name();
+ }
+
+ if (type->is_struct() || type->is_xception()) {
+ generate_serialize_struct(out, (t_struct*)type, prefix + "{" + tfield->get_name() + "}");
+ } else if (type->is_container()) {
+ generate_serialize_container(out, type, prefix + "{" + tfield->get_name() + "}");
+ } else if (type->is_base_type() || type->is_enum()) {
+
+ string name = tfield->get_name();
+
+ // Hack for when prefix is defined (always a hash ref)
+ if (!prefix.empty())
+ name = prefix + "{" + tfield->get_name() + "}";
+
+ indent(out) << "$xfer += $output->";
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "compiler error: cannot serialize void field in a struct: " + name;
+ break;
+ case t_base_type::TYPE_STRING:
+ out << "writeString($" << name << ");";
+ break;
+ case t_base_type::TYPE_BOOL:
+ out << "writeBool($" << name << ");";
+ break;
+ case t_base_type::TYPE_I8:
+ out << "writeByte($" << 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 PERL name for base type " + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ out << "writeI32($" << name << ");";
+ }
+ out << endl;
+
+ } else {
+ printf("DO NOT KNOW HOW TO SERIALIZE FIELD '%s%s' TYPE '%s'\n",
+ prefix.c_str(),
+ tfield->get_name().c_str(),
+ type->get_name().c_str());
+ }
+}
+
+/**
+ * Serializes all the members of a struct.
+ *
+ * @param tstruct The struct to serialize
+ * @param prefix String prefix to attach to all fields
+ */
+void t_perl_generator::generate_serialize_struct(ofstream& out, t_struct* tstruct, string prefix) {
+ (void)tstruct;
+ indent(out) << "$xfer += $" << prefix << "->write($output);" << endl;
+}
+
+/**
+ * Writes out a container
+ */
+void t_perl_generator::generate_serialize_container(ofstream& out, t_type* ttype, string prefix) {
+ scope_up(out);
+
+ if (ttype->is_map()) {
+ indent(out) << "$xfer += $output->writeMapBegin("
+ << type_to_enum(((t_map*)ttype)->get_key_type()) << ", "
+ << type_to_enum(((t_map*)ttype)->get_val_type()) << ", "
+ << "scalar(keys %{$" << prefix << "}));" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "$xfer += $output->writeSetBegin("
+ << type_to_enum(((t_set*)ttype)->get_elem_type()) << ", "
+ << "scalar(@{$" << prefix << "}));" << endl;
+
+ } else if (ttype->is_list()) {
+
+ indent(out) << "$xfer += $output->writeListBegin("
+ << type_to_enum(((t_list*)ttype)->get_elem_type()) << ", "
+ << "scalar(@{$" << prefix << "}));" << endl;
+ }
+
+ scope_up(out);
+
+ if (ttype->is_map()) {
+ string kiter = tmp("kiter");
+ string viter = tmp("viter");
+ indent(out) << "while( my ($" << kiter << ",$" << viter << ") = each %{$" << prefix << "}) "
+ << endl;
+
+ scope_up(out);
+ generate_serialize_map_element(out, (t_map*)ttype, kiter, viter);
+ scope_down(out);
+
+ } else if (ttype->is_set()) {
+ string iter = tmp("iter");
+ indent(out) << "foreach my $" << iter << " (@{$" << prefix << "})" << endl;
+ scope_up(out);
+ generate_serialize_set_element(out, (t_set*)ttype, iter);
+ scope_down(out);
+
+ } else if (ttype->is_list()) {
+ string iter = tmp("iter");
+ indent(out) << "foreach my $" << iter << " (@{$" << prefix << "}) " << endl;
+ scope_up(out);
+ generate_serialize_list_element(out, (t_list*)ttype, iter);
+ scope_down(out);
+ }
+
+ scope_down(out);
+
+ if (ttype->is_map()) {
+ indent(out) << "$xfer += $output->writeMapEnd();" << endl;
+ } else if (ttype->is_set()) {
+ indent(out) << "$xfer += $output->writeSetEnd();" << endl;
+ } else if (ttype->is_list()) {
+ indent(out) << "$xfer += $output->writeListEnd();" << endl;
+ }
+
+ scope_down(out);
+}
+
+/**
+ * Serializes the members of a map.
+ *
+ */
+void t_perl_generator::generate_serialize_map_element(ofstream& out,
+ t_map* tmap,
+ string kiter,
+ string viter) {
+ t_field kfield(tmap->get_key_type(), kiter);
+ generate_serialize_field(out, &kfield);
+
+ t_field vfield(tmap->get_val_type(), viter);
+ generate_serialize_field(out, &vfield);
+}
+
+/**
+ * Serializes the members of a set.
+ */
+void t_perl_generator::generate_serialize_set_element(ofstream& out, t_set* tset, string iter) {
+ t_field efield(tset->get_elem_type(), iter);
+ generate_serialize_field(out, &efield);
+}
+
+/**
+ * Serializes the members of a list.
+ */
+void t_perl_generator::generate_serialize_list_element(ofstream& out, t_list* tlist, string iter) {
+ t_field efield(tlist->get_elem_type(), iter);
+ generate_serialize_field(out, &efield);
+}
+
+/**
+ * Declares a field, which may include initialization as necessary.
+ *
+ * @param ttype The type
+ */
+string t_perl_generator::declare_field(t_field* tfield, bool init, bool obj) {
+ string result = "my $" + tfield->get_name();
+ if (init) {
+ t_type* type = get_true_type(tfield->get_type());
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ break;
+ case t_base_type::TYPE_STRING:
+ result += " = ''";
+ break;
+ case t_base_type::TYPE_BOOL:
+ result += " = 0";
+ 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 += " = 0.0";
+ break;
+ default:
+ throw "compiler error: no PERL initializer for base type "
+ + t_base_type::t_base_name(tbase);
+ }
+ } else if (type->is_enum()) {
+ result += " = 0";
+ } else if (type->is_container()) {
+ result += " = []";
+ } else if (type->is_struct() || type->is_xception()) {
+ if (obj) {
+ result += " = new " + perl_namespace(type->get_program()) + type->get_name() + "()";
+ } else {
+ result += " = undef";
+ }
+ }
+ }
+ return result + ";";
+}
+
+/**
+ * Renders a function signature of the form 'type name(args)'
+ *
+ * @param tfunction Function definition
+ * @return String of rendered function definition
+ */
+string t_perl_generator::function_signature(t_function* tfunction, string prefix) {
+
+ string str;
+
+ str = prefix + tfunction->get_name() + "{\n";
+ str += " my $self = shift;\n";
+
+ // Need to create perl function arg inputs
+ const vector<t_field*>& fields = tfunction->get_arglist()->get_members();
+ vector<t_field*>::const_iterator f_iter;
+
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ str += " my $" + (*f_iter)->get_name() + " = shift;\n";
+ }
+
+ return str;
+}
+
+/**
+ * Renders a field list
+ */
+string t_perl_generator::argument_list(t_struct* tstruct) {
+ string result = "";
+
+ const vector<t_field*>& fields = tstruct->get_members();
+ vector<t_field*>::const_iterator f_iter;
+ bool first = true;
+ for (f_iter = fields.begin(); f_iter != fields.end(); ++f_iter) {
+ if (first) {
+ first = false;
+ } else {
+ result += ", ";
+ }
+ result += "$" + (*f_iter)->get_name();
+ }
+ return result;
+}
+
+/**
+ * Converts the parse type to a C++ enum string for the given type.
+ */
+string t_perl_generator::type_to_enum(t_type* type) {
+ type = get_true_type(type);
+
+ if (type->is_base_type()) {
+ t_base_type::t_base tbase = ((t_base_type*)type)->get_base();
+ switch (tbase) {
+ case t_base_type::TYPE_VOID:
+ throw "NO T_VOID CONSTRUCT";
+ case t_base_type::TYPE_STRING:
+ return "TType::STRING";
+ case t_base_type::TYPE_BOOL:
+ return "TType::BOOL";
+ case t_base_type::TYPE_I8:
+ return "TType::BYTE";
+ case t_base_type::TYPE_I16:
+ return "TType::I16";
+ case t_base_type::TYPE_I32:
+ return "TType::I32";
+ case t_base_type::TYPE_I64:
+ return "TType::I64";
+ case t_base_type::TYPE_DOUBLE:
+ return "TType::DOUBLE";
+ }
+ } else if (type->is_enum()) {
+ return "TType::I32";
+ } else if (type->is_struct() || type->is_xception()) {
+ return "TType::STRUCT";
+ } else if (type->is_map()) {
+ return "TType::MAP";
+ } else if (type->is_set()) {
+ return "TType::SET";
+ } else if (type->is_list()) {
+ return "TType::LIST";
+ }
+
+ throw "INVALID TYPE IN type_to_enum: " + type->get_name();
+}
+
+THRIFT_REGISTER_GENERATOR(perl, "Perl", "")