elna/gcc/elna1.cc

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "target.h"
#include "tree.h"
#include "tree-iterator.h"
#include "gimple-expr.h"
#include "diagnostic.h"
#include "opts.h"
#include "fold-const.h"
#include "stor-layout.h"
#include "debug.h"
#include "langhooks.h"
#include "langhooks-def.h"
#include "common/common-target.h"

#include <fstream>
#include <elna/source/driver.h>
#include "elna/gcc/elna-generic.h"
#include "elna/gcc/elna-diagnostic.h"
#include "parser.hh"

/* Language-dependent contents of a type.  */

struct GTY (()) lang_type
{
  char dummy;
};

/* Language-dependent contents of a decl.  */

struct GTY (()) lang_decl
{
  char dummy;
};

/* Language-dependent contents of an identifier.  This must include a
   tree_identifier.  */

struct GTY (()) lang_identifier
{
  struct tree_identifier common;
};

/* The resulting tree type.  */

union GTY ((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"),
	    chain_next ("CODE_CONTAINS_STRUCT (TREE_CODE (&%h.generic), "
			"TS_COMMON) ? ((union lang_tree_node *) TREE_CHAIN "
			"(&%h.generic)) : NULL"))) lang_tree_node
{
  union tree_node GTY ((tag ("0"), desc ("tree_node_structure (&%h)"))) generic;
  struct lang_identifier GTY ((tag ("1"))) identifier;
};

/* We don't use language_function.  */

struct GTY (()) language_function
{
  int dummy;
};

/* Language hooks.  */

static bool elna_langhook_init(void)
{
    build_common_tree_nodes (false);

    /* I don't know why this has to be done explicitly.  */
    void_list_node = build_tree_list (NULL_TREE, void_type_node);

    build_common_builtin_nodes ();

    return true;
}

static void elna_parse_file (const char *filename)
{
    std::ifstream file{ filename, std::ios::in };

    if (!file)
    {
      fatal_error(UNKNOWN_LOCATION, "cannot open filename %s: %m", filename);
    }

    elna::source::driver driver{ filename };
    elna::source::lexer lexer(file);
    yy::parser parser(lexer, driver);

    linemap_add(line_table, LC_ENTER, 0, filename, 1);
    if (auto result = parser())
    {
        for (const auto& error : driver.errors())
        {
            auto gcc_location = elna_gcc_location(&error->position);

            error_at(gcc_location, error->what().c_str());
        }
    }
    else
    {
        elna::gcc::generic_visitor generic_visitor;

        generic_visitor.visit(driver.tree.get());
    }
    linemap_add(line_table, LC_LEAVE, 0, NULL, 0);
}

static void
elna_langhook_parse_file (void)
{
  for (int i = 0; i < num_in_fnames; i++)
    {
      elna_parse_file (in_fnames[i]);
    }
}

static tree
elna_langhook_type_for_mode (enum machine_mode mode, int unsignedp)
{
  if (mode == TYPE_MODE (float_type_node))
    return float_type_node;

  if (mode == TYPE_MODE (double_type_node))
    return double_type_node;

  if (mode == TYPE_MODE (intQI_type_node))
    return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
  if (mode == TYPE_MODE (intHI_type_node))
    return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
  if (mode == TYPE_MODE (intSI_type_node))
    return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
  if (mode == TYPE_MODE (intDI_type_node))
    return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
  if (mode == TYPE_MODE (intTI_type_node))
    return unsignedp ? unsigned_intTI_type_node : intTI_type_node;

  if (mode == TYPE_MODE (integer_type_node))
    return unsignedp ? unsigned_type_node : integer_type_node;

  if (mode == TYPE_MODE (long_integer_type_node))
    return unsignedp ? long_unsigned_type_node : long_integer_type_node;

  if (mode == TYPE_MODE (long_long_integer_type_node))
    return unsignedp ? long_long_unsigned_type_node
		     : long_long_integer_type_node;

  if (COMPLEX_MODE_P (mode))
    {
      if (mode == TYPE_MODE (complex_float_type_node))
	return complex_float_type_node;
      if (mode == TYPE_MODE (complex_double_type_node))
	return complex_double_type_node;
      if (mode == TYPE_MODE (complex_long_double_type_node))
	return complex_long_double_type_node;
      if (mode == TYPE_MODE (complex_integer_type_node) && !unsignedp)
	return complex_integer_type_node;
    }

  /* gcc_unreachable */
  return NULL;
}

static tree
elna_langhook_type_for_size (unsigned int bits ATTRIBUTE_UNUSED,
			     int unsignedp ATTRIBUTE_UNUSED)
{
  gcc_unreachable ();
  return NULL;
}

/* Record a builtin function.  We just ignore builtin functions.  */

static tree
elna_langhook_builtin_function (tree decl)
{
  return decl;
}

static bool
elna_langhook_global_bindings_p (void)
{
  gcc_unreachable ();
  return true;
}

static tree
elna_langhook_pushdecl (tree decl ATTRIBUTE_UNUSED)
{
  gcc_unreachable ();
}

static tree
elna_langhook_getdecls (void)
{
  return NULL;
}

#undef LANG_HOOKS_NAME
#define LANG_HOOKS_NAME "Elna"

#undef LANG_HOOKS_INIT
#define LANG_HOOKS_INIT elna_langhook_init

#undef LANG_HOOKS_PARSE_FILE
#define LANG_HOOKS_PARSE_FILE elna_langhook_parse_file

#undef LANG_HOOKS_TYPE_FOR_MODE
#define LANG_HOOKS_TYPE_FOR_MODE elna_langhook_type_for_mode

#undef LANG_HOOKS_TYPE_FOR_SIZE
#define LANG_HOOKS_TYPE_FOR_SIZE elna_langhook_type_for_size

#undef LANG_HOOKS_BUILTIN_FUNCTION
#define LANG_HOOKS_BUILTIN_FUNCTION elna_langhook_builtin_function

#undef LANG_HOOKS_GLOBAL_BINDINGS_P
#define LANG_HOOKS_GLOBAL_BINDINGS_P elna_langhook_global_bindings_p

#undef LANG_HOOKS_PUSHDECL
#define LANG_HOOKS_PUSHDECL elna_langhook_pushdecl

#undef LANG_HOOKS_GETDECLS
#define LANG_HOOKS_GETDECLS elna_langhook_getdecls

struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;

#include "gt-elna-elna1.h"
#include "gtype-elna.h"