keys_generator Class Reference

#include <keys_generator.h>

Inheritance diagram for keys_generator:

[legend]Collaboration diagram for keys_generator:

[legend]List of all members.

Public Member Functions
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 *, UTL_ScopedName *, AST_Type *, const char *)
bool	gen_union (AST_Union *, UTL_ScopedName *, const std::vector< AST_UnionBranch * > &, AST_Type *, const char *)

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Detailed Description

Definition at line 13 of file keys_generator.h.

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Member Function Documentation

bool keys_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 16 of file keys_generator.cpp.

References Function::addArg(), be_global, Function::endArgs(), BE_GlobalData::export_macro(), BE_GlobalData::header_, BE_GlobalData::impl_, scoped(), and dds_generator::scoped_helper().

{
  string cxx = scoped(name), under = scoped_helper(name, "_");
  IDL_GlobalData::DCPS_Data_Type_Info* info = idl_global->is_dcps_type(name);
  if (!info) {
    return true;
  }

  const bool empty = info->key_list_.is_empty();
  {
    NamespaceGuard ng;
    Function has_key("gen_has_key", "bool");
    has_key.addArg("", "const " + cxx + "&");
    has_key.endArgs();
    be_global->impl_ << "  return " << (empty ? "false" : "true") << ";\n";
  }

  struct Namespaces {
    size_t n_;
    Namespaces(UTL_ScopedName* name)
      : n_(0)
    {
      for (UTL_ScopedName* sn = name; sn && sn->tail();
          sn = static_cast<UTL_ScopedName*>(sn->tail())) {
        string str = sn->head()->get_string();
        if (str.size()) {
          be_global->header_ << "namespace " << str << " {\n";
          ++n_;
        }
      }
    }
    ~Namespaces()
    {
      for (size_t i = 0; i < n_; ++i) be_global->header_ << "}\n";
    }
  } ns(name);

  be_global->header_ <<
    "namespace OpenDDSGenerated {\n"
    "// This structure supports use of std::map with a key\n"
    "// defined by one or more #pragma DCPS_DATA_KEY lines.\n"
    "struct " << be_global->export_macro() << ' ' <<
    name->last_component()->get_string() << "_KeyLessThan {\n"
    "  bool operator()(const " << cxx << "& v1, const " << cxx
    << "& v2) const\n"
    "  {\n"
    "    using ::operator<; // TAO::String_Manager's operator< is "
    "in global NS\n";

  if (empty) {
    be_global->header_ <<
      "    ACE_UNUSED_ARG(v1);\n"
      "    ACE_UNUSED_ARG(v2);\n"
      "    // with no DCPS_DATA_KEYs, return false\n"
      "    // to allow use of map with just one entry\n"
      "    return false;\n"
      "  }\n"
      "};\n"
      "}\n";
    return true;
  }

  IDL_GlobalData::DCPS_Data_Type_Info_Iter iter(info->key_list_);

  for (ACE_TString* kp = 0; iter.next(kp) != 0; iter.advance()) {
    string fname = ACE_TEXT_ALWAYS_CHAR(kp->c_str());
    be_global->header_ <<
      "    if (v1." << fname << " < v2." << fname << ") return true;\n"
      "    if (v2." << fname << " < v1." << fname << ") return false;\n";
  }
  be_global->header_ <<
    "    return false;\n"
    "  }\n};\n}\n";
  return true;
}

bool keys_generator::gen_typedef	(	AST_Typedef *	,
		UTL_ScopedName *	,
		AST_Type *	,
		const char *
	)			[inline, virtual]

Implements dds_generator.

Definition at line 19 of file keys_generator.h.

  { return true; }

bool keys_generator::gen_union	(	AST_Union *	,
		UTL_ScopedName *	,
		const std::vector< AST_UnionBranch * > &	,
		AST_Type *	,
		const char *
	)			[inline, virtual]

Implements dds_generator.

Definition at line 22 of file keys_generator.h.

  { return true; }

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

• keys_generator.h
• keys_generator.cpp

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