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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [cp/] [cp-objcp-common.c] - Rev 320
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/* Some code common to C++ and ObjC++ front ends. Copyright (C) 2004, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Ziemowit Laski <zlaski@apple.com> This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config.h" #include "system.h" #include "coretypes.h" #include "tm.h" #include "tree.h" #include "cp-tree.h" #include "c-common.h" #include "toplev.h" #include "langhooks.h" #include "langhooks-def.h" #include "diagnostic.h" #include "debug.h" #include "cxx-pretty-print.h" #include "cp-objcp-common.h" /* Special routine to get the alias set for C++. */ alias_set_type cxx_get_alias_set (tree t) { if (IS_FAKE_BASE_TYPE (t)) /* The base variant of a type must be in the same alias set as the complete type. */ return get_alias_set (TYPE_CONTEXT (t)); /* Punt on PMFs until we canonicalize functions properly. */ if (TYPE_PTRMEMFUNC_P (t) || (POINTER_TYPE_P (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))) return 0; return c_common_get_alias_set (t); } /* Called from check_global_declarations. */ bool cxx_warn_unused_global_decl (const_tree decl) { if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) return false; if (DECL_IN_SYSTEM_HEADER (decl)) return false; /* Const variables take the place of #defines in C++. */ if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl)) return false; return true; } /* Langhook for tree_size: determine size of our 'x' and 'c' nodes. */ size_t cp_tree_size (enum tree_code code) { switch (code) { case PTRMEM_CST: return sizeof (struct ptrmem_cst); case BASELINK: return sizeof (struct tree_baselink); case TEMPLATE_PARM_INDEX: return sizeof (template_parm_index); case DEFAULT_ARG: return sizeof (struct tree_default_arg); case OVERLOAD: return sizeof (struct tree_overload); case STATIC_ASSERT: return sizeof (struct tree_static_assert); case TYPE_ARGUMENT_PACK: case TYPE_PACK_EXPANSION: return sizeof (struct tree_common); case NONTYPE_ARGUMENT_PACK: case EXPR_PACK_EXPANSION: return sizeof (struct tree_exp); case ARGUMENT_PACK_SELECT: return sizeof (struct tree_argument_pack_select); case TRAIT_EXPR: return sizeof (struct tree_trait_expr); case LAMBDA_EXPR: return sizeof (struct tree_lambda_expr); case TEMPLATE_INFO: return sizeof (struct tree_template_info); default: gcc_unreachable (); } /* NOTREACHED */ } /* Returns true if T is a variably modified type, in the sense of C99. FN is as passed to variably_modified_p. This routine needs only check cases that cannot be handled by the language-independent logic in tree.c. */ bool cp_var_mod_type_p (tree type, tree fn) { /* If TYPE is a pointer-to-member, it is variably modified if either the class or the member are variably modified. */ if (TYPE_PTR_TO_MEMBER_P (type)) return (variably_modified_type_p (TYPE_PTRMEM_CLASS_TYPE (type), fn) || variably_modified_type_p (TYPE_PTRMEM_POINTED_TO_TYPE (type), fn)); /* All other types are not variably modified. */ return false; } /* Construct a C++-aware pretty-printer for CONTEXT. It is assumed that CONTEXT->printer is an already constructed basic pretty_printer. */ void cxx_initialize_diagnostics (diagnostic_context *context) { pretty_printer *base = context->printer; cxx_pretty_printer *pp = XNEW (cxx_pretty_printer); memcpy (pp_base (pp), base, sizeof (pretty_printer)); pp_cxx_pretty_printer_init (pp); context->printer = (pretty_printer *) pp; /* It is safe to free this object because it was previously malloc()'d. */ free (base); } /* This compares two types for equivalence ("compatible" in C-based languages). This routine should only return 1 if it is sure. It should not be used in contexts where erroneously returning 0 causes problems. */ int cxx_types_compatible_p (tree x, tree y) { return same_type_ignoring_top_level_qualifiers_p (x, y); } /* Return true if DECL is explicit member function. */ bool cp_function_decl_explicit_p (tree decl) { return (decl && FUNCTION_FIRST_USER_PARMTYPE (decl) != void_list_node && DECL_NONCONVERTING_P (decl)); } /* Stubs to keep c-opts.c happy. */ void push_file_scope (void) { } void pop_file_scope (void) { } /* c-pragma.c needs to query whether a decl has extern "C" linkage. */ bool has_c_linkage (const_tree decl) { return DECL_EXTERN_C_P (decl); } static GTY ((if_marked ("tree_map_marked_p"), param_is (struct tree_map))) htab_t shadowed_var_for_decl; /* Lookup a shadowed var for FROM, and return it if we find one. */ tree decl_shadowed_for_var_lookup (tree from) { struct tree_map *h, in; in.base.from = from; h = (struct tree_map *) htab_find_with_hash (shadowed_var_for_decl, &in, htab_hash_pointer (from)); if (h) return h->to; return NULL_TREE; } /* Insert a mapping FROM->TO in the shadowed var hashtable. */ void decl_shadowed_for_var_insert (tree from, tree to) { struct tree_map *h; void **loc; h = GGC_NEW (struct tree_map); h->hash = htab_hash_pointer (from); h->base.from = from; h->to = to; loc = htab_find_slot_with_hash (shadowed_var_for_decl, h, h->hash, INSERT); *(struct tree_map **) loc = h; } void init_shadowed_var_for_decl (void) { shadowed_var_for_decl = htab_create_ggc (512, tree_map_hash, tree_map_eq, 0); } #include "gt-cp-cp-objcp-common.h"
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