value_reader_generator Class Reference

#include <value_reader_generator.h>

Inheritance diagram for value_reader_generator:

Collaboration diagram for value_reader_generator:

Public Member Functions
bool	gen_enum (AST_Enum *, UTL_ScopedName *name, const std::vector< AST_EnumVal *> &contents, const char *repoid)
bool	gen_typedef (AST_Typedef *, UTL_ScopedName *, AST_Type *, const char *)
bool	gen_struct (AST_Structure *node, UTL_ScopedName *name, const std::vector< AST_Field *> &fields, AST_Type::SIZE_TYPE size, const char *repoid)
bool	gen_union (AST_Union *, UTL_ScopedName *, const std::vector< AST_UnionBranch *> &, AST_Type *, const char *)
Public Member Functions inherited from dds_generator
virtual	~dds_generator ()=0
virtual bool	do_included_files () const
virtual void	gen_prologue ()
virtual void	gen_epilogue ()
virtual bool	gen_const (UTL_ScopedName *, bool, AST_Constant *)
virtual bool	gen_struct_fwd (UTL_ScopedName *, AST_Type::SIZE_TYPE)
virtual bool	gen_interf (AST_Interface *, UTL_ScopedName *, bool, const std::vector< AST_Interface *> &, const std::vector< AST_Interface *> &, const std::vector< AST_Attribute *> &, const std::vector< AST_Operation *> &, const char *)
virtual bool	gen_interf_fwd (UTL_ScopedName *)
virtual bool	gen_native (AST_Native *, UTL_ScopedName *, const char *)
virtual bool	gen_union_fwd (AST_UnionFwd *, UTL_ScopedName *, AST_Type::SIZE_TYPE)

Additional Inherited Members
Static Public Member Functions inherited from dds_generator
static std::string	get_tag_name (const std::string &base_name, bool nested_key_only=false)
static std::string	get_xtag_name (UTL_ScopedName *name)
static bool	cxx_escaped (const std::string &s)
static std::string	valid_var_name (const std::string &str)
static std::string	to_string (Identifier *id, EscapeContext ec=EscapeContext_Normal)
static std::string	scoped_helper (UTL_ScopedName *sn, const char *sep, EscapeContext cxt=EscapeContext_Normal)
static std::string	module_scope_helper (UTL_ScopedName *sn, const char *sep, EscapeContext cxt=EscapeContext_Normal)

Detailed Description

Definition at line 14 of file value_reader_generator.h.

Member Function Documentation

gen_enum()

bool value_reader_generator::gen_enum ( AST_Enum *  , UTL_ScopedName *  name, const std::vector< AST_EnumVal *> &  contents, const char *  repoid  )

virtual

Reimplemented from dds_generator.

Definition at line 212 of file value_reader_generator.cpp.

References Function::addArg(), be_global, canonical_name(), Function::endArgs(), read(), and scoped().

{
  be_global->add_include("dds/DCPS/Util.h", BE_GlobalData::STREAM_H);
  be_global->add_include("dds/DCPS/ValueReader.h", BE_GlobalData::STREAM_H);

  const std::string type_name = scoped(name);

  {
    NamespaceGuard guard;

    Function read("vread", "bool");
    read.addArg("value_reader", "OpenDDS::DCPS::ValueReader&");
    read.addArg("value", type_name + "&");
    read.endArgs();

    be_global->impl_ <<
      "  static const ListEnumHelper::Pair pairs[] = {";

    for (size_t i = 0; i != contents.size(); ++i) {
      if (i) {
        be_global->impl_ << ',';
      }
      const std::string idl_name = canonical_name(contents[i]);
      be_global->impl_ <<
        '{' << '"' << idl_name << '"' << ',' << contents[i]->constant_value()->ev()->u.eval << '}';
    }

    be_global->impl_ <<
      ",{0,0}};\n"
      "  ListEnumHelper helper(pairs);\n"
      "  return value_reader.read_enum(value, helper);\n";
  }

  return true;
}

gen_struct()

bool value_reader_generator::gen_struct ( AST_Structure *  node, UTL_ScopedName *  name, const std::vector< AST_Field *> &  fields, AST_Type::SIZE_TYPE  size, const char *  repoid  )

virtual

Implements dds_generator.

Definition at line 259 of file value_reader_generator.cpp.

References Function::addArg(), be_global, canonical_name(), Function::endArgs(), read(), and scoped().

{
  be_global->add_include("dds/DCPS/Util.h", BE_GlobalData::STREAM_H);
  be_global->add_include("dds/DCPS/ValueReader.h", BE_GlobalData::STREAM_H);

  const std::string type_name = scoped(name);
  const bool use_cxx11 = be_global->language_mapping() == BE_GlobalData::LANGMAP_CXX11;
  const std::string accessor = use_cxx11 ? "()" : "";

  {
    NamespaceGuard guard;

    Function read("vread", "bool");
    read.addArg("value_reader", "OpenDDS::DCPS::ValueReader&");
    read.addArg("value", type_name + "&");
    read.endArgs();

    be_global->impl_ <<
      "  static const ListMemberHelper::Pair pairs[] = {";

    for (size_t i = 0; i != fields.size(); ++i) {
      if (i) {
        be_global->impl_ << ',';
      }
      const std::string idl_name = canonical_name(fields[i]);
      be_global->impl_ <<
        '{' << '"' << idl_name << '"' << ',' << be_global->get_id(fields[i]) << '}';
    }

    be_global->impl_ <<
      ",{0,0}};\n"
      "  ListMemberHelper helper(pairs);\n";

    be_global->impl_ <<
      "  if (!value_reader.begin_struct()) return false;\n"
      "  XTypes::MemberId member_id;\n"
      "  while (value_reader.begin_struct_member(member_id, helper)) {\n"
      "    switch (member_id) {\n";

    for (std::vector<AST_Field*>::const_iterator pos = fields.begin(), limit = fields.end();
         pos != limit; ++pos) {
      AST_Field* const field = *pos;
      const std::string field_name = field->local_name()->get_string();
      be_global->impl_ <<
        "    case " << be_global->get_id(field) << ": {\n";
      generate_read("value." + field_name, accessor, field->field_type(), "i", 3);
      be_global->impl_ <<
        "      break;\n"
        "    }\n";
    }

    be_global->impl_ <<
      "    }\n"
      "    if (!value_reader.end_struct_member()) return false;\n"
      "  }\n"
      "  if (!value_reader.end_struct()) return false;\n"
      "  return true;\n";
  }

  return true;
}

gen_typedef()

bool value_reader_generator::gen_typedef ( AST_Typedef *  , UTL_ScopedName *  , AST_Type *  , const char *    )

virtual

Implements dds_generator.

Definition at line 251 of file value_reader_generator.cpp.

{
  return true;
}

gen_union()

bool value_reader_generator::gen_union ( AST_Union *  u, UTL_ScopedName *  name, const std::vector< AST_UnionBranch *> &  branches, AST_Type *  discriminator, const char *    )

virtual

Implements dds_generator.

Definition at line 326 of file value_reader_generator.cpp.

References Function::addArg(), be_global, Function::endArgs(), generateSwitchForUnion(), read(), and scoped().

{
  be_global->add_include("dds/DCPS/Util.h", BE_GlobalData::STREAM_H);
  be_global->add_include("dds/DCPS/ValueReader.h", BE_GlobalData::STREAM_H);

  const std::string type_name = scoped(name);

  {
    NamespaceGuard guard;

    Function read("vread", "bool");
    read.addArg("value_reader", "OpenDDS::DCPS::ValueReader&");
    read.addArg("value", type_name + "&");
    read.endArgs();

    be_global->impl_ <<
      "  if (!value_reader.begin_union()) return false;\n"
      "  if (!value_reader.begin_discriminator()) return false;\n"
      "  {\n"
      "    " << scoped(discriminator->name()) << " d;\n";
    generate_read("d", "", discriminator, "i", 2);
    be_global->impl_ <<
      "    value._d(d);\n"
      "  }\n"
      "  if (!value_reader.end_discriminator()) return false;\n";

    generateSwitchForUnion(u, "value._d()", branch_helper, branches,
                           discriminator, "", "", type_name.c_str(),
                           false, false);
    be_global->impl_ <<
      "  if (!value_reader.end_union()) return false;\n"
      "  return true;\n";
  }

  return true;
}

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The documentation for this class was generated from the following files:

• value_reader_generator.h
• value_reader_generator.cpp