metaclass_generator Class Reference

#include <metaclass_generator.h>

Inheritance diagram for metaclass_generator:

Collaboration diagram for metaclass_generator:

Public Member Functions
	metaclass_generator ()
bool	gen_enum (AST_Enum *node, UTL_ScopedName *name, const std::vector< AST_EnumVal *> &contents, const char *repoid)
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_typedef (AST_Typedef *node, UTL_ScopedName *name, AST_Type *type, const char *repoid)
bool	gen_union (AST_Union *node, UTL_ScopedName *name, const std::vector< AST_UnionBranch *> &branches, AST_Type *type, const char *repoid)
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)

Private Attributes
bool	first_struct_

Additional Inherited Members
Static Public Member Functions inherited from dds_generator
static std::string	get_tag_name (const std::string &base_name, const std::string &qualifier="")
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 13 of file metaclass_generator.h.

Constructor & Destructor Documentation

metaclass_generator()

metaclass_generator::metaclass_generator ( )

inline

Definition at line 15 of file metaclass_generator.h.

References gen_enum(), gen_struct(), gen_typedef(), gen_union(), and name.

    : first_struct_(true)
  {}

Member Function Documentation

gen_enum()

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

virtual

Reimplemented from dds_generator.

Definition at line 31 of file metaclass_generator.cpp.

References be_global, ACE_String_Base< char >::c_str(), canonical_name(), AstTypeClassification::CL_ARRAY, AstTypeClassification::CL_ENUM, AstTypeClassification::CL_SCALAR, AstTypeClassification::CL_SEQUENCE, AstTypeClassification::CL_STRING, AstTypeClassification::CL_STRUCTURE, AstTypeClassification::CL_UNION, AstTypeClassification::classify(), TopicKeys::count(), extensibilitykind_mutable, marshal_generator::gen_field_getValueFromSerialized(), NestedForLoops::index_, OpenDDS::XTypes::key_count(), name, AstTypeClassification::resolveActualType(), scoped(), dds_generator::scoped_helper(), and string_type().

Referenced by metaclass_generator().

{
  NamespaceGuard ng;
  std::string array_decl = "const char* gen_" + scoped_helper(name, "_") + "_names[]";
  std::string size_decl = "const size_t gen_" + scoped_helper(name, "_") + "_names_size";
  std::string decl_prefix = ((be_global->export_macro() == "") ? std::string("extern ") : (std::string(be_global->export_macro().c_str()) + " extern "));
  be_global->header_ << decl_prefix << array_decl << ";\n";
  be_global->header_ << decl_prefix << size_decl << ";\n";
  be_global->impl_ << array_decl << " = {\n";
  for (size_t i = 0; i < contents.size(); ++i) {
    be_global->impl_ << "  \"" << canonical_name(contents[i])
      << ((i < contents.size() - 1) ? "\",\n" : "\"\n");
  }
  be_global->impl_ << "};\n";
  be_global->impl_ << size_decl << " = " << contents.size() << ";\n";
  return true;
}

gen_struct()

bool metaclass_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 495 of file metaclass_generator.cpp.

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

Referenced by metaclass_generator().

{
  const std::string clazz = scoped(name);

  be_global->add_include("dds/DCPS/PoolAllocator.h",
    BE_GlobalData::STREAM_CPP);

  ContentSubscriptionGuard csg;
  NamespaceGuard ng;

  if (!generate_metaclass(node, name, fields, first_struct_, clazz)) {
    return false;
  }

  generate_anon_fields(node);

  {
    Function f("gen_skip_over", "bool");
    f.addArg("ser", "Serializer&");
    f.addArg("", clazz + "*");
    f.endArgs();
    be_global->impl_ <<
      "  MetaStructImpl<" << clazz << ">().getValue(ser, \"\");\n"
      "  return true;\n";
  }
  return true;
}

gen_typedef()

bool metaclass_generator::gen_typedef ( AST_Typedef *  node, UTL_ScopedName *  name, AST_Type *  type, const char *  repoid  )

virtual

Implements dds_generator.

Definition at line 525 of file metaclass_generator.cpp.

References Function::addArg(), array_element_count(), be_global, AstTypeClassification::CL_ARRAY, AstTypeClassification::CL_ENUM, AstTypeClassification::CL_PRIMITIVE, AstTypeClassification::CL_SEQUENCE, AstTypeClassification::CL_STRING, AstTypeClassification::CL_STRUCTURE, AstTypeClassification::classify(), deepest_named_type(), Function::endArgs(), marshal_generator::generate_dheader_code(), dds_generator::get_tag_name(), name, AstTypeClassification::resolveActualType(), scoped(), and to_cxx_type().

Referenced by metaclass_generator().

{
  AST_Array* arr = dynamic_cast<AST_Array*>(type);
  AST_Sequence* seq = 0;
  if (!arr && !(seq = dynamic_cast<AST_Sequence*>(type))) {
    return true;
  }
  const bool use_cxx11 = be_global->language_mapping() == BE_GlobalData::LANGMAP_CXX11;
  const std::string clazz = scoped(name);

  ContentSubscriptionGuard csg;
  NamespaceGuard ng;
  Function f("gen_skip_over", "bool");
  f.addArg("ser", "Serializer&");
  if (use_cxx11) {
    f.addArg("", "IDL::DistinctType<" + clazz + ", " + dds_generator::get_tag_name(clazz) +">*");
  } else {
    f.addArg("", clazz + (arr ? "_forany*" : "*"));
  }
  f.endArgs();

  AST_Type* elem;
  if (seq != 0) {
    elem = seq->base_type();
  } else {
    elem = arr->base_type();
  }
  be_global->impl_ <<
    "  const Encoding& encoding = ser.encoding();\n"
    "  ACE_UNUSED_ARG(encoding);\n";
  Classification elem_cls = classify(elem);
  const bool primitive = elem_cls & CL_PRIMITIVE;
  marshal_generator::generate_dheader_code(
    "    if (!ser.read_delimiter(total_size)) {\n"
    "      return false;\n"
    "    }\n", !primitive, true);

  std::string len;

  if (arr) {
    std::ostringstream strstream;
    strstream << array_element_count(arr);
    len = strstream.str();
  } else { // Sequence
    be_global->impl_ <<
      "  ACE_CDR::ULong length;\n"
      "  if (!(ser >> length)) return false;\n";
    len = "length";
  }

  const std::string cxx_elem = scoped(elem->name());
  AST_Type* elem_orig = elem;
  elem = resolveActualType(elem);
  elem_cls = classify(elem);

  if ((elem_cls & (CL_PRIMITIVE | CL_ENUM))) {
    // fixed-length sequence/array element -> skip all elements at once
    size_t sz = 0;
    to_cxx_type(elem, sz);
    be_global->impl_ <<
      "  return ser.skip(" << len << ", " << sz << ");\n";
  } else {
    be_global->impl_ <<
      "  for (ACE_CDR::ULong i = 0; i < " << len << "; ++i) {\n";
    if (elem_cls & CL_STRING) {
      be_global->impl_ <<
        "    ACE_CDR::ULong strlength;\n"
        "    if (!(ser >> strlength && ser.skip(strlength))) return false;\n";
    } else if (elem_cls & (CL_ARRAY | CL_SEQUENCE | CL_STRUCTURE)) {
      std::string pre, post;
      if (!use_cxx11 && (elem_cls & CL_ARRAY)) {
        post = "_forany";
      } else if (use_cxx11 && (elem_cls & (CL_ARRAY | CL_SEQUENCE))) {
        pre = "IDL::DistinctType<";
        post = ", " + dds_generator::get_tag_name(scoped_helper(deepest_named_type(elem_orig)->name(), "::")) + ">";
      }
      be_global->impl_ <<
        "    if (!gen_skip_over(ser, static_cast<" << pre << cxx_elem << post
        << "*>(0))) return false;\n";
    }
    be_global->impl_ <<
      "  }\n"
      "  return true;\n";
  }

  return true;
}

gen_union()

bool metaclass_generator::gen_union ( AST_Union *  node, UTL_ScopedName *  name, const std::vector< AST_UnionBranch *> &  branches, AST_Type *  type, const char *  repoid  )

virtual

Implements dds_generator.

Definition at line 654 of file metaclass_generator.cpp.

References Function::addArg(), be_global, Function::endArgs(), extensibilitykind_final, extensibilitykind_mutable, gen_union_branch(), generate_anon_fields(), marshal_generator::generate_dheader_code(), generateSwitchForUnion(), getWrapper(), scoped(), and WD_INPUT.

Referenced by metaclass_generator().

{
  const std::string clazz = scoped(name);

  ContentSubscriptionGuard csg;
  NamespaceGuard ng;

  std::vector<AST_Field*> dummy_field_list;
  if (!generate_metaclass(node, name, dummy_field_list, first_struct_, clazz)) {
    return false;
  }

  generate_anon_fields(node);

  {
    Function f("gen_skip_over", "bool");
    f.addArg("ser", "Serializer&");
    f.addArg("", clazz + "*");
    f.endArgs();

    const ExtensibilityKind exten = be_global->extensibility(node);
    const bool not_final = exten != extensibilitykind_final;
    const bool is_mutable  = exten == extensibilitykind_mutable;
    be_global->impl_ <<
      "  const Encoding& encoding = ser.encoding();\n"
      "  ACE_UNUSED_ARG(encoding);\n"
      "  const bool is_mutable = " << is_mutable <<";\n"
      "  unsigned member_id;\n"
      "  size_t field_size;\n"
      "  bool must_understand = false;\n";
    marshal_generator::generate_dheader_code(
      "    if (!ser.read_delimiter(total_size)) {\n"
      "      return false;\n"
      "    }\n", not_final);
    if (is_mutable) {
      be_global->impl_ <<
        "  if (!ser.read_parameter_id(member_id, field_size, must_understand)) {\n"
        "    return false;\n"
        "  }\n";
    }
    be_global->impl_ <<
      "  " << scoped(discriminator->name()) << " disc;\n"
      "  if (!(ser >> " << getWrapper("disc", discriminator, WD_INPUT) << ")) {\n"
      "    return false;\n"
      "  }\n";
    if (generateSwitchForUnion(node, "disc", gen_union_branch, branches, discriminator, "", "", "",
                               false, true, false)) {
      be_global->impl_ <<
        "  return true;\n";
    }
  }
  return true;
}

Member Data Documentation

first_struct_

bool metaclass_generator::first_struct_

private

Definition at line 33 of file metaclass_generator.h.

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

• metaclass_generator.h
• metaclass_generator.cpp