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author | Jason Merrill <jason@redhat.com> | 2008-07-02 11:38:50 -0400 |
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committer | Jason Merrill <jason@gcc.gnu.org> | 2008-07-02 11:38:50 -0400 |
commit | 0935784671e347118c6bf7629852ba50e9466a85 (patch) | |
tree | 607689dbfbc953af02e19c2cf6b60aa4ddae34e3 /gcc/tree.c | |
parent | 906c5773db6775e8182c4ff74f5c835bca66ae4e (diff) | |
download | gcc-0935784671e347118c6bf7629852ba50e9466a85.zip gcc-0935784671e347118c6bf7629852ba50e9466a85.tar.gz gcc-0935784671e347118c6bf7629852ba50e9466a85.tar.bz2 |
Implement WG21 N2672, Initializer List proposed wording
gcc/cp/ChangeLog:
2008-07-02 Jason Merrill <jason@redhat.com>
Implement WG21 N2672, Initializer List proposed wording
* cp-tree.h (enum cp_tree_index): Add CPTI_INIT_LIST_TYPE.
(struct lang_type_class): Add has_list_ctor bitfield.
(TYPE_HAS_LIST_CTOR): New macro.
(BRACE_ENCLOSED_INITIALIZER_P): Expect init_list_type_node.
(CONSTRUCTOR_IS_DIRECT_INIT): New macro.
(LOOKUP_NO_NARROWING): New macro.
(LOOKUP_NO_COPY_CTOR_CONVERSION): New macro.
* parser.c (cp_parse_braced_list): Split out from...
(cp_parser_initializer_clause): ...here.
(cp_parser_postfix_expression): Build up CONSTRUCTOR for compound
literal here.
(cp_lexer_next_token_is_not_keyword): New fn.
(cp_parser_parenthesized_expression_list): Handle { }.
(cp_parser_new_expression, cp_parser_new_initializer): Likewise.
(cp_parser_assignment_expression, cp_parser_condition): Likewise.
(cp_parser_jump_statement, cp_parser_simple_declaration): Likewise.
(cp_parser_mem_initializer, cp_parser_init_declarator): Likewise.
(cp_parser_initializer, cp_parser_functional_cast): Likewise.
(cp_parser_omp_for_loop, cp_parser_cache_group): Likewise.
(cp_parser_save_member_function_body): Likewise.
* call.c (conversion_kind): Add ck_list, ck_aggr.
(struct conversion): Add check_narrowing bitfield, conversion list.
(build_list_conv): New fn.
(build_aggr_conv): New fn.
(implicit_conversion): Call them.
(standard_conversion): Set check_narrowing if appropriate.
(add_function_candidate): Handle LOOKUP_NO_COPY_CTOR_CONVERSION.
(build_user_type_conversion_1): When converting from an init list,
we allow additional conversions except when calling a copy ctor.
(convert_like_real): Calling an explicit ctor for an init list is
ill-formed. Handle ck_list and ck_addr. Check narrowing.
(build_new_method_call): If CONSTRUCTOR_IS_DIRECT_INIT is set and
class doesn't have a list ctor, break the {} into a TREE_LIST.
(compare_ics): ck_list is better than other UDCs.
(set_up_extended_ref_temp): Split out from initialize_reference.
(is_std_init_list): New fn.
(is_list_ctor): New fn.
* decl.c (cxx_init_decl_processing): Create init_list_type_node.
(reshape_init_array_1): Pass it to build_constructor.
(reshape_init_class): Ditto.
(initialize_artificial_var): Pass the appropriate type.
(build_aggr_init_full_exprs): Split out from...
(check_initializer): ...here. Handle new semantics.
(build_init_list_var_init): New subroutine of check_initializer.
(grokdeclarator): Converting constructors can have more than one parm.
(grok_special_member_properties): Set TYPE_HAS_LIST_CTOR.
* init.c (expand_default_init): Only do digest_init for aggregates.
* rtti.c (tinfo_base_init): Pass init_list_type_node to
build_constructor_from_list.
(generic_initializer, ptr_initializer): Ditto.
(ptm_initializer, class_initializer): Ditto.
(get_pseudo_ti_init): Ditto.
* error.c (dump_type): Handle init_list_type_node.
(maybe_warn_cpp0x): New fn.
(maybe_varn_variadic_templates): Call it.
* cvt.c (ocp_convert): Handle conversion from { }.
* tree.c (build_array_of_n_type): New fn.
* typeck2.c (store_init_value): Use init_list_type_node.
(digest_init): Likewise.
(check_narrowing): New fn.
* semantics.c: (finish_compound_literal): Take CONSTRUCTOR instead
of vector of constructor elts. Handle non-aggregate types. Make
constant literals static.
* pt.c: (tsubst_copy_and_build): Adjust.
(unify): Handle { }.
* name-lookup.c (arg_assoc_type): Handle init_list_type_node.
gcc/ChangeLog:
2008-07-02 Jason Merrill <jason@redhat.com>
* tree.c (ctor_to_list): New fn.
* tree.h: Declare it.
(CONSTRUCTOR_ELT): New macro.
(CONSTRUCTOR_NELTS): New macro.
libstdc++-v3/ChangeLog:
2008-07-02 Jason Merrill <jason@redhat.com>
* libsupc++/initializer_list: New file.
* include/bits/stl_map.h (insert(initializer_list)): New method.
From-SVN: r137361
Diffstat (limited to 'gcc/tree.c')
-rw-r--r-- | gcc/tree.c | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -1827,6 +1827,26 @@ tree_cons_stat (tree purpose, tree value, tree chain MEM_STAT_DECL) return node; } +/* Return the elements of a CONSTRUCTOR as a TREE_LIST. */ + +tree +ctor_to_list (tree ctor) +{ + tree list = NULL_TREE; + tree *p = &list; + unsigned ix; + constructor_elt *ce; + + for (ix = 0; + VEC_iterate (constructor_elt, CONSTRUCTOR_ELTS (ctor), ix, ce); + ++ix) + { + *p = build_tree_list (ce->index, ce->value); + p = &TREE_CHAIN (*p); + } + + return list; +} /* Return the size nominally occupied by an object of type TYPE when it resides in memory. The value is measured in units of bytes, |