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/*
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Crown Copyright (c) 1997, 1998
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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#include "config.h"
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#include "c_types.h"
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#include "ctype_ops.h"
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#include "etype_ops.h"
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#include "exp_ops.h"
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#include "ftype_ops.h"
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#include "graph_ops.h"
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#include "hashid_ops.h"
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#include "id_ops.h"
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#include "member_ops.h"
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#include "nat_ops.h"
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#include "nspace_ops.h"
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#include "str_ops.h"
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#include "type_ops.h"
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#include "error.h"
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#include "catalog.h"
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#include "option.h"
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#include "tdf.h"
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#include "access.h"
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#include "assign.h"
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#include "basetype.h"
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#include "buffer.h"
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#include "cast.h"
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#include "check.h"
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#include "chktype.h"
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#include "class.h"
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#include "compile.h"
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#include "constant.h"
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#include "construct.h"
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#include "convert.h"
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#include "declare.h"
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#include "derive.h"
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#include "destroy.h"
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#include "dump.h"
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#include "exception.h"
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#include "expression.h"
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#include "file.h"
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#include "function.h"
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#include "hash.h"
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#include "identifier.h"
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#include "initialise.h"
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#include "instance.h"
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#include "inttype.h"
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#include "literal.h"
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#include "namespace.h"
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#include "overload.h"
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#include "parse.h"
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#include "predict.h"
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#include "print.h"
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#include "statement.h"
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#include "syntax.h"
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#include "template.h"
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#include "tok.h"
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#include "tokdef.h"
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#include "token.h"
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#include "ustring.h"
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/*
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INLINE MEMBER DEFINITIONS
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A static member can be defined inline in its class. This is only a
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provisional definition for use in constant expressions etc. The real
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definition (which cannot contain an initialiser) must be provided
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elsewhere. This value is used to indicate such members.
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*/
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#define dspec_stat_inline dspec_explicit
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#define dspec_ignore_mem ( dspec_alias | dspec_inherit | dspec_token )
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/*
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MEMBER NUMBER
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This variable is used to keep track of the number of data members
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within next_data_member. Anonymous unions, rather than their members,
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are counted.
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*/
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unsigned long member_no = 0 ;
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/*
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FIND NEXT DATA MEMBER
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This routine returns the first non-static, non-function member of a
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class following mem. Anonymous unions are included if bit 1 of bf
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is false, but their members if it is true. Anonymous bitfields are
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included if bit 0 of bf is true. The null member is returned if there
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are no further members.
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*/
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MEMBER next_data_member
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PROTO_N ( ( mem, bf ) )
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PROTO_T ( MEMBER mem X int bf )
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{
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while ( !IS_NULL_member ( mem ) ) {
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IDENTIFIER id = DEREF_id ( member_id ( mem ) ) ;
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if ( !IS_NULL_id ( id ) && IS_id_member ( id ) ) {
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DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
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if ( !( ds & dspec_ignore_mem ) ) {
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int ok = 1 ;
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HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
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if ( ds & dspec_reserve ) {
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/* Anonymous union members */
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if ( !( bf & 2 ) ) ok = 0 ;
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} else {
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member_no++ ;
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}
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if ( IS_hashid_anon ( nm ) ) {
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TYPE t = DEREF_type ( id_member_type ( id ) ) ;
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unsigned tag = TAG_type ( t ) ;
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if ( tag == type_bitfield_tag ) {
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/* Anonymous bitfield */
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if ( !( bf & 1 ) ) ok = 0 ;
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} else if ( tag == type_compound_tag ) {
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/* Anonymous union */
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if ( bf & 2 ) ok = 0 ;
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}
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}
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if ( ok ) return ( mem ) ;
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}
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}
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mem = DEREF_member ( member_next ( mem ) ) ;
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}
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return ( NULL_member ) ;
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}
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/*
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CONSTRUCT A DYNAMIC INITIALISER
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This routine checks whether the expression e is a non-constant
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initialiser for id (or a component of id if off is not null). If so
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it is embedded in a dynamic initialiser expression and an error is
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reported.
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*/
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EXP dynamic_init
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PROTO_N ( ( id, off, e ) )
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PROTO_T ( IDENTIFIER id X string off X EXP e )
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{
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int fs = 0 ;
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int c = -1 ;
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if ( !IS_NULL_id ( id ) ) {
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switch ( TAG_id ( id ) ) {
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case id_variable_tag : {
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DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
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if ( ds & dspec_auto ) {
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if ( off == NULL ) return ( e ) ;
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} else {
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if ( !( ds & dspec_linkage ) ) fs = 1 ;
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}
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break ;
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}
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case id_stat_member_tag : {
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/* Check static members */
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break ;
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}
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default : {
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/* Ignore other identifiers */
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return ( e ) ;
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}
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}
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}
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if ( option ( OPT_init_dynamic ) ) {
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/* Dynamic initialisation not allowed */
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c = 1 ;
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}
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if ( !is_const_exp ( e, c ) ) {
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/* Non-constant initialiser */
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TYPE t = DEREF_type ( exp_type ( e ) ) ;
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if ( !is_templ_type ( t ) ) {
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ERROR err ;
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if ( off ) {
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err = ERR_dcl_init_aggr_dynamic () ;
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} else {
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err = ERR_dcl_init_dynamic () ;
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}
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if ( !IS_NULL_err ( err ) ) {
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ERROR err2 = ERR_dcl_init_decl ( id, off ) ;
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err = concat_error ( err2, err ) ;
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report ( crt_loc, err ) ;
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}
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if ( fs ) {
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/* Check function statics */
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e = check_return_exp ( e, lex_static ) ;
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}
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MAKE_exp_dynamic ( t, e, e ) ;
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}
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}
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return ( e ) ;
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}
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/*
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CHECK A VARIABLE INITIALISER
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This routine is called to check the initialiser for a variable or static
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data member. Its primary purpose is to mark those temporaries which
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are bound to variables.
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*/
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EXP check_init
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PROTO_N ( ( e ) )
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PROTO_T ( EXP e )
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{
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if ( !IS_NULL_exp ( e ) ) {
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switch ( TAG_exp ( e ) ) {
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case exp_identifier_tag : {
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IDENTIFIER id = DEREF_id ( exp_identifier_id ( e ) ) ;
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DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
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if ( ds & dspec_temp ) {
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ds &= ~dspec_register ;
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COPY_dspec ( id_storage ( id ), ds ) ;
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}
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break ;
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}
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case exp_init_tag : {
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IDENTIFIER id = DEREF_id ( exp_init_id ( e ) ) ;
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DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
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if ( ds & dspec_temp ) {
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ds &= ~dspec_register ;
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COPY_dspec ( id_storage ( id ), ds ) ;
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}
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break ;
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}
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case exp_indir_tag : {
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EXP a = DEREF_exp ( exp_indir_ptr ( e ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( exp_indir_ptr ( e ), a ) ;
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break ;
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}
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case exp_address_tag : {
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EXP a = DEREF_exp ( exp_address_arg ( e ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( exp_address_arg ( e ), a ) ;
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break ;
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}
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case exp_base_cast_tag : {
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EXP a = DEREF_exp ( exp_base_cast_arg ( e ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( exp_base_cast_arg ( e ), a ) ;
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break ;
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}
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case exp_add_ptr_tag : {
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EXP a = DEREF_exp ( exp_add_ptr_ptr ( e ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( exp_add_ptr_ptr ( e ), a ) ;
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break ;
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}
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case exp_dynamic_tag : {
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EXP a = DEREF_exp ( exp_dynamic_arg ( e ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( exp_dynamic_arg ( e ), a ) ;
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break ;
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}
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case exp_aggregate_tag : {
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LIST ( EXP ) p = DEREF_list ( exp_aggregate_args ( e ) ) ;
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while ( !IS_NULL_list ( p ) ) {
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EXP a = DEREF_exp ( HEAD_list ( p ) ) ;
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a = check_init ( a ) ;
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COPY_exp ( HEAD_list ( p ), a ) ;
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p = TAIL_list ( p ) ;
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}
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break ;
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}
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case exp_nof_tag : {
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EXP a = DEREF_exp ( exp_nof_start ( e ) ) ;
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EXP b = DEREF_exp ( exp_nof_pad ( e ) ) ;
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EXP c = DEREF_exp ( exp_nof_end ( e ) ) ;
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a = check_init ( a ) ;
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b = check_init ( b ) ;
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c = check_init ( c ) ;
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COPY_exp ( exp_nof_start ( e ), a ) ;
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COPY_exp ( exp_nof_pad ( e ), b ) ;
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COPY_exp ( exp_nof_end ( e ), c ) ;
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break ;
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}
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}
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}
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return ( e ) ;
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}
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/*
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TEMPORARY VARIABLE FLAG
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The variable made_temporary is set to the temporary variable whenever
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a temporary variable is created. temp_storage is used to determine
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the storage class for a local variable.
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*/
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IDENTIFIER made_temporary = NULL_id ;
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int keep_temporary = 0 ;
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static DECL_SPEC temp_storage = dspec_auto ;
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/*
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DECLARE A TEMPORARY VARIABLE
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This routine declares a temporary variable of type t, initial value
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e, and destructor d (the implicit destructor will be created if this
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is the null expression). It returns an expression giving the value of
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this temporary. Note the use of an assignment expression to ensure
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that the temporary gets initialised in the right place.
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*/
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EXP make_temporary
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PROTO_N ( ( t, e, d, ref, err ) )
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PROTO_T ( TYPE t X EXP e X EXP d X int ref X ERROR *err )
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{
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LOCATION loc ;
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DECL_SPEC ds ;
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EXP c = NULL_exp ;
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HASHID nm = lookup_anon () ;
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NAMESPACE ns = crt_namespace ;
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348 |
QUALIFIER cq = crt_id_qualifier ;
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349 |
int tq = crt_templ_qualifier ;
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int fn = in_function_defn ;
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IDENTIFIER id = DEREF_id ( hashid_id ( nm ) ) ;
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loc = decl_loc ;
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decl_loc = crt_loc ;
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crt_id_qualifier = qual_none ;
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crt_templ_qualifier = 0 ;
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356 |
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/* Declare the temporary object */
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358 |
if ( IS_type_ref ( t ) ) t = DEREF_type ( type_ref_sub ( t ) ) ;
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359 |
if ( in_default_arg ) {
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360 |
/* NOT YET IMPLEMENTED */
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361 |
crt_namespace = global_namespace ;
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|
362 |
in_function_defn = 0 ;
|
|
|
363 |
}
|
|
|
364 |
t = qualify_type ( t, cv_none, 0 ) ;
|
|
|
365 |
if ( IS_type_compound ( t ) ) {
|
|
|
366 |
add_error ( err, ERR_dcl_init_ref_tmp ( t ) ) ;
|
|
|
367 |
}
|
|
|
368 |
id = make_object_decl ( dspec_temp, t, id, 0 ) ;
|
|
|
369 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
370 |
if ( temp_storage != dspec_auto ) {
|
|
|
371 |
/* Set storage class */
|
|
|
372 |
ds &= ~dspec_storage ;
|
|
|
373 |
ds |= temp_storage ;
|
|
|
374 |
}
|
|
|
375 |
if ( ds & dspec_auto ) ds |= dspec_register ;
|
|
|
376 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
377 |
made_temporary = id ;
|
|
|
378 |
|
|
|
379 |
/* Check initialiser */
|
|
|
380 |
if ( !is_const_exp ( e, -1 ) ) {
|
|
|
381 |
if ( ds & dspec_auto ) {
|
|
|
382 |
c = e ;
|
|
|
383 |
e = NULL_exp ;
|
|
|
384 |
} else if ( ref ) {
|
|
|
385 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
386 |
MAKE_exp_dynamic ( s, e, e ) ;
|
|
|
387 |
add_error ( err, ERR_dcl_init_dynamic () ) ;
|
|
|
388 |
} else {
|
|
|
389 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
390 |
c = e ;
|
|
|
391 |
e = make_null_exp ( s ) ;
|
|
|
392 |
}
|
|
|
393 |
}
|
|
|
394 |
if ( IS_NULL_exp ( d ) ) {
|
|
|
395 |
/* Create destructor */
|
|
|
396 |
int du = do_usage ;
|
|
|
397 |
do_usage = 0 ;
|
|
|
398 |
d = init_default ( t, &d, DEFAULT_DESTR, EXTRA_DESTR, err ) ;
|
|
|
399 |
do_usage = du ;
|
|
|
400 |
}
|
|
|
401 |
COPY_exp ( id_variable_init ( id ), e ) ;
|
|
|
402 |
COPY_exp ( id_variable_term ( id ), d ) ;
|
|
|
403 |
define_id ( id ) ;
|
|
|
404 |
|
|
|
405 |
/* Construct the result expression */
|
|
|
406 |
if ( !IS_NULL_exp ( c ) ) {
|
|
|
407 |
/* Assign initial value */
|
|
|
408 |
t = DEREF_type ( id_variable_type ( id ) ) ;
|
|
|
409 |
MAKE_exp_init ( t, id, c, e ) ;
|
|
|
410 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
411 |
ds |= dspec_explicit ;
|
|
|
412 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
413 |
} else {
|
|
|
414 |
e = make_id_exp ( id ) ;
|
|
|
415 |
}
|
|
|
416 |
|
|
|
417 |
/* Define variable */
|
|
|
418 |
if ( !( ds & dspec_auto ) ) {
|
|
|
419 |
if ( !really_in_function_defn && !in_template_decl ) {
|
|
|
420 |
/* Compile variable definition */
|
|
|
421 |
compile_variable ( id, 0 ) ;
|
|
|
422 |
}
|
|
|
423 |
}
|
|
|
424 |
if ( do_dump ) {
|
|
|
425 |
dump_implicit = 1 ;
|
|
|
426 |
dump_declare ( id, &decl_loc, 1 ) ;
|
|
|
427 |
}
|
|
|
428 |
crt_templ_qualifier = tq ;
|
|
|
429 |
crt_id_qualifier = cq ;
|
|
|
430 |
in_function_defn = fn ;
|
|
|
431 |
crt_namespace = ns ;
|
|
|
432 |
decl_loc = loc ;
|
|
|
433 |
return ( e ) ;
|
|
|
434 |
}
|
|
|
435 |
|
|
|
436 |
|
|
|
437 |
/*
|
|
|
438 |
IS A VARIABLE ALIASED IN AN EXPRESSION
|
|
|
439 |
|
|
|
440 |
This routine checks whether the variable expression d is aliased in
|
|
|
441 |
the expression e.
|
|
|
442 |
*/
|
|
|
443 |
|
|
|
444 |
static int involves_alias
|
|
|
445 |
PROTO_N ( ( e, d ) )
|
|
|
446 |
PROTO_T ( EXP e X EXP d )
|
|
|
447 |
{
|
|
|
448 |
if ( !IS_NULL_exp ( d ) ) {
|
|
|
449 |
/* NOT YET IMPLEMENTED */
|
|
|
450 |
UNUSED ( e ) ;
|
|
|
451 |
return ( 1 ) ;
|
|
|
452 |
}
|
|
|
453 |
return ( 0 ) ;
|
|
|
454 |
}
|
|
|
455 |
|
|
|
456 |
|
|
|
457 |
/*
|
|
|
458 |
ELIMINATE A TEMPORARY VARIABLE
|
|
|
459 |
|
|
|
460 |
This routine is called to eliminate any temporary variables from the
|
|
|
461 |
value e which is to be assigned to a variable given by d. d is the
|
|
|
462 |
null expression in a variable initialisation, otherwise care needs
|
|
|
463 |
to be taken if d is aliased in e. Note that creating a temporary and
|
|
|
464 |
then removing it ensures that the accesses for the copy constructor
|
|
|
465 |
and destructor are checked correctly.
|
|
|
466 |
*/
|
|
|
467 |
|
|
|
468 |
EXP remove_temporary
|
|
|
469 |
PROTO_N ( ( e, d ) )
|
|
|
470 |
PROTO_T ( EXP e X EXP d )
|
|
|
471 |
{
|
|
|
472 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
473 |
EXP a = NULL_exp ;
|
|
|
474 |
unsigned tag = TAG_exp ( e ) ;
|
|
|
475 |
if ( tag == exp_constr_tag ) {
|
|
|
476 |
LIST ( EXP ) p ;
|
|
|
477 |
int info = DEREF_int ( exp_constr_info ( e ) ) ;
|
|
|
478 |
if ( info != DEFAULT_COPY ) return ( e ) ;
|
|
|
479 |
a = DEREF_exp ( exp_constr_call ( e ) ) ;
|
|
|
480 |
p = DEREF_list ( exp_func_id_args ( a ) ) ;
|
|
|
481 |
if ( IS_NULL_list ( p ) ) return ( e ) ;
|
|
|
482 |
p = TAIL_list ( p ) ;
|
|
|
483 |
if ( IS_NULL_list ( p ) ) return ( e ) ;
|
|
|
484 |
a = DEREF_exp ( HEAD_list ( p ) ) ;
|
|
|
485 |
if ( !IS_exp_address ( a ) ) return ( e ) ;
|
|
|
486 |
a = DEREF_exp ( exp_address_arg ( a ) ) ;
|
|
|
487 |
} else if ( tag == exp_contents_tag ) {
|
|
|
488 |
a = DEREF_exp ( exp_contents_ptr ( e ) ) ;
|
|
|
489 |
}
|
|
|
490 |
if ( !IS_NULL_exp ( a ) && IS_exp_init ( a ) ) {
|
|
|
491 |
/* Check for temporary variable */
|
|
|
492 |
IDENTIFIER id = DEREF_id ( exp_init_id ( a ) ) ;
|
|
|
493 |
if ( IS_id_variable ( id ) ) {
|
|
|
494 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
495 |
if ( ( ds & dspec_temp ) && !keep_temporary ) {
|
|
|
496 |
/* Eliminate temporary variable */
|
|
|
497 |
EXP b = DEREF_exp ( exp_init_arg ( a ) ) ;
|
|
|
498 |
if ( IS_NULL_exp ( b ) ) {
|
|
|
499 |
b = DEREF_exp ( id_variable_init ( id ) ) ;
|
|
|
500 |
}
|
|
|
501 |
if ( !involves_alias ( b, d ) ) {
|
|
|
502 |
ds |= dspec_ignore ;
|
|
|
503 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
504 |
return ( b ) ;
|
|
|
505 |
}
|
|
|
506 |
}
|
|
|
507 |
}
|
|
|
508 |
}
|
|
|
509 |
}
|
|
|
510 |
return ( e ) ;
|
|
|
511 |
}
|
|
|
512 |
|
|
|
513 |
|
|
|
514 |
/*
|
|
|
515 |
FORCE A REFERENCE INITIALISATION
|
|
|
516 |
|
|
|
517 |
This flag forces a reference to be initialised by a less cv-qualified
|
|
|
518 |
version of the same type. Values of greater than 1 can arise in
|
|
|
519 |
copy constructors.
|
|
|
520 |
*/
|
|
|
521 |
|
|
|
522 |
int init_ref_force = 1 ;
|
|
|
523 |
|
|
|
524 |
|
|
|
525 |
/*
|
|
|
526 |
INITIALISE A REFERENCE WITH AN LVALUE
|
|
|
527 |
|
|
|
528 |
This routine checks whether e is a suitable lvalue initialiser for a
|
|
|
529 |
reference to type t. If so a suitably converted version of e is
|
|
|
530 |
returned. The null expression is returned otherwise.
|
|
|
531 |
*/
|
|
|
532 |
|
|
|
533 |
EXP init_ref_lvalue
|
|
|
534 |
PROTO_N ( ( t, e, err ) )
|
|
|
535 |
PROTO_T ( TYPE t X EXP e X ERROR *err )
|
|
|
536 |
{
|
|
|
537 |
EXP a = NULL_exp ;
|
|
|
538 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
539 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
540 |
CV_SPEC qual = DEREF_cv ( type_qual ( s ) ) ;
|
|
|
541 |
if ( qual & cv_lvalue ) {
|
|
|
542 |
/* Check whether t is reference compatible with s */
|
|
|
543 |
unsigned nt = TAG_type ( t ) ;
|
|
|
544 |
unsigned ns = TAG_type ( s ) ;
|
|
|
545 |
CV_SPEC cv = cv_compare ( t, s ) ;
|
|
|
546 |
if ( nt == ns ) {
|
|
|
547 |
if ( nt == type_compound_tag ) {
|
|
|
548 |
/* Check for base class conversions */
|
|
|
549 |
if ( cv == cv_none || init_ref_force ) {
|
|
|
550 |
a = cast_class_class ( t, e, err, CAST_IMPLICIT, 1 ) ;
|
|
|
551 |
}
|
|
|
552 |
} else if ( nt == type_func_tag ) {
|
|
|
553 |
/* Allow for overloading */
|
|
|
554 |
LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
|
|
|
555 |
e = resolve_cast ( t, e, err, 1, 0, pids ) ;
|
|
|
556 |
if ( !IS_exp_member ( e ) ) {
|
|
|
557 |
s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
558 |
if ( eq_type_unqual ( t, s ) ) {
|
|
|
559 |
if ( eq_except ( t, s ) != 2 ) {
|
|
|
560 |
add_error ( err, ERR_except_spec_init () ) ;
|
|
|
561 |
}
|
|
|
562 |
a = e ;
|
|
|
563 |
}
|
|
|
564 |
}
|
|
|
565 |
} else {
|
|
|
566 |
/* Otherwise check for equal types */
|
|
|
567 |
if ( eq_type_unqual ( t, s ) ) {
|
|
|
568 |
a = e ;
|
|
|
569 |
if ( cv != cv_none ) {
|
|
|
570 |
add_error ( err, ERR_dcl_init_ref_qual ( cv ) ) ;
|
|
|
571 |
}
|
|
|
572 |
}
|
|
|
573 |
}
|
|
|
574 |
}
|
|
|
575 |
}
|
|
|
576 |
if ( is_templ_type ( s ) ) {
|
|
|
577 |
/* Allow for template parameters */
|
|
|
578 |
a = cast_templ_type ( t, e, CAST_IMPLICIT ) ;
|
|
|
579 |
}
|
|
|
580 |
}
|
|
|
581 |
return ( a ) ;
|
|
|
582 |
}
|
|
|
583 |
|
|
|
584 |
|
|
|
585 |
/*
|
|
|
586 |
INITIALISE A REFERENCE WITH AN RVALUE
|
|
|
587 |
|
|
|
588 |
This routine checks whether e is a suitable rvalue initialiser for a
|
|
|
589 |
reference to type t. It is firstly checked that t is a const reference
|
|
|
590 |
and not a reference to function. If t is reference compatible with the
|
|
|
591 |
type of s then a temporary is created to hold the value of e and the
|
|
|
592 |
contents of this temporary are returned. Otherwise the null expression
|
|
|
593 |
is returned.
|
|
|
594 |
*/
|
|
|
595 |
|
|
|
596 |
static EXP init_ref_rvalue
|
|
|
597 |
PROTO_N ( ( t, e, err ) )
|
|
|
598 |
PROTO_T ( TYPE t X EXP e X ERROR *err )
|
|
|
599 |
{
|
|
|
600 |
/* Check for reference to functions */
|
|
|
601 |
CV_SPEC qual ;
|
|
|
602 |
unsigned nt = TAG_type ( t ) ;
|
|
|
603 |
if ( nt == type_func_tag ) {
|
|
|
604 |
add_error ( err, ERR_dcl_init_ref_func () ) ;
|
|
|
605 |
e = make_null_exp ( t ) ;
|
|
|
606 |
return ( e ) ;
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
/* Check for const references */
|
|
|
610 |
qual = find_cv_qual ( t ) ;
|
|
|
611 |
qual &= cv_qual ;
|
|
|
612 |
if ( qual != cv_const ) {
|
|
|
613 |
int ok = 0 ;
|
|
|
614 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
615 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
616 |
if ( IS_type_error ( s ) ) ok = 1 ;
|
|
|
617 |
}
|
|
|
618 |
if ( !ok ) add_error ( err, ERR_dcl_init_ref_const () ) ;
|
|
|
619 |
}
|
|
|
620 |
|
|
|
621 |
/* Check the initialiser */
|
|
|
622 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
623 |
/* Check whether t is reference compatible with s */
|
|
|
624 |
int force = init_ref_force ;
|
|
|
625 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
626 |
unsigned ns = TAG_type ( s ) ;
|
|
|
627 |
CV_SPEC cv = cv_compare ( t, s ) ;
|
|
|
628 |
if ( nt == ns && ( cv == cv_none || force ) ) {
|
|
|
629 |
TYPE r = t ;
|
|
|
630 |
if ( nt == type_compound_tag ) {
|
|
|
631 |
/* t must be a base class of s */
|
|
|
632 |
CLASS_TYPE ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
633 |
CLASS_TYPE cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
634 |
GRAPH gr = find_base_class ( cs, ct, 1 ) ;
|
|
|
635 |
if ( IS_NULL_graph ( gr ) ) return ( NULL_exp ) ;
|
|
|
636 |
r = qualify_type ( s, qual, 0 ) ;
|
|
|
637 |
/* NOT YET IMPLEMENTED: copy e */
|
|
|
638 |
} else {
|
|
|
639 |
/* Otherwise check for equal types */
|
|
|
640 |
if ( !eq_type_unqual ( t, s ) ) return ( NULL_exp ) ;
|
|
|
641 |
}
|
|
|
642 |
if ( cv != cv_none ) {
|
|
|
643 |
/* Binding from more qualified type */
|
|
|
644 |
add_error ( err, ERR_dcl_init_ref_qual ( cv ) ) ;
|
|
|
645 |
}
|
|
|
646 |
e = make_temporary ( r, e, NULL_exp, 1, err ) ;
|
|
|
647 |
if ( nt == type_compound_tag ) {
|
|
|
648 |
/* Bind temporary to reference */
|
|
|
649 |
e = cast_class_class ( t, e, err, CAST_IMPLICIT, 1 ) ;
|
|
|
650 |
}
|
|
|
651 |
return ( e ) ;
|
|
|
652 |
}
|
|
|
653 |
}
|
|
|
654 |
return ( NULL_exp ) ;
|
|
|
655 |
}
|
|
|
656 |
|
|
|
657 |
|
|
|
658 |
/*
|
|
|
659 |
CREATE A REFERENCE INITIALISER
|
|
|
660 |
|
|
|
661 |
This routine creates a reference initialiser of type t out of the
|
|
|
662 |
expression e.
|
|
|
663 |
*/
|
|
|
664 |
|
|
|
665 |
EXP make_ref_init
|
|
|
666 |
PROTO_N ( ( t, e ) )
|
|
|
667 |
PROTO_T ( TYPE t X EXP e )
|
|
|
668 |
{
|
|
|
669 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
670 |
if ( IS_exp_op ( e ) ) {
|
|
|
671 |
/* Allow for template parameters */
|
|
|
672 |
COPY_type ( exp_type ( e ), t ) ;
|
|
|
673 |
} else {
|
|
|
674 |
TYPE s = t ;
|
|
|
675 |
unsigned tag = TAG_type ( s ) ;
|
|
|
676 |
if ( tag == type_ref_tag ) {
|
|
|
677 |
s = DEREF_type ( type_ref_sub ( s ) ) ;
|
|
|
678 |
tag = TAG_type ( s ) ;
|
|
|
679 |
}
|
|
|
680 |
if ( tag == type_token_tag && is_templ_type ( s ) ) {
|
|
|
681 |
/* Check again later */
|
|
|
682 |
/* EMPTY */
|
|
|
683 |
} else {
|
|
|
684 |
MAKE_exp_address ( t, e, e ) ;
|
|
|
685 |
}
|
|
|
686 |
}
|
|
|
687 |
}
|
|
|
688 |
return ( e ) ;
|
|
|
689 |
}
|
|
|
690 |
|
|
|
691 |
|
|
|
692 |
/*
|
|
|
693 |
CREATE A NULL EXPRESSION
|
|
|
694 |
|
|
|
695 |
This routine creates a null expression (i.e. all zeros) for the type t.
|
|
|
696 |
This is the default value for a non-explicitly initialised variable with
|
|
|
697 |
internal or external linkage.
|
|
|
698 |
*/
|
|
|
699 |
|
|
|
700 |
EXP make_null_exp
|
|
|
701 |
PROTO_N ( ( t ) )
|
|
|
702 |
PROTO_T ( TYPE t )
|
|
|
703 |
{
|
|
|
704 |
EXP e ;
|
|
|
705 |
switch ( TAG_type ( t ) ) {
|
|
|
706 |
case type_integer_tag :
|
|
|
707 |
case type_enumerate_tag : {
|
|
|
708 |
NAT n = small_nat [0] ;
|
|
|
709 |
MAKE_exp_int_lit ( t, n, exp_int_lit_tag, e ) ;
|
|
|
710 |
break ;
|
|
|
711 |
}
|
|
|
712 |
case type_floating_tag : {
|
|
|
713 |
FLOAT f = get_float ( t, 0 ) ;
|
|
|
714 |
MAKE_exp_float_lit ( t, f, e ) ;
|
|
|
715 |
break ;
|
|
|
716 |
}
|
|
|
717 |
case type_bitfield_tag : {
|
|
|
718 |
TYPE s = find_bitfield_type ( t ) ;
|
|
|
719 |
e = make_null_exp ( s ) ;
|
|
|
720 |
MAKE_exp_cast ( t, ( CONV_BITFIELD | CONV_REVERSE ), e, e ) ;
|
|
|
721 |
break ;
|
|
|
722 |
}
|
|
|
723 |
default : {
|
|
|
724 |
MAKE_exp_null ( t, e ) ;
|
|
|
725 |
break ;
|
|
|
726 |
}
|
|
|
727 |
}
|
|
|
728 |
return ( e ) ;
|
|
|
729 |
}
|
|
|
730 |
|
|
|
731 |
|
|
|
732 |
/*
|
|
|
733 |
CREATE A UNIT EXPRESSION
|
|
|
734 |
|
|
|
735 |
This routine creates a unit expression (i.e. one) for the type t.
|
|
|
736 |
*/
|
|
|
737 |
|
|
|
738 |
EXP make_unit_exp
|
|
|
739 |
PROTO_N ( ( t ) )
|
|
|
740 |
PROTO_T ( TYPE t )
|
|
|
741 |
{
|
|
|
742 |
EXP e ;
|
|
|
743 |
switch ( TAG_type ( t ) ) {
|
|
|
744 |
case type_integer_tag :
|
|
|
745 |
case type_enumerate_tag : {
|
|
|
746 |
NAT n = small_nat [1] ;
|
|
|
747 |
MAKE_exp_int_lit ( t, n, exp_int_lit_tag, e ) ;
|
|
|
748 |
break ;
|
|
|
749 |
}
|
|
|
750 |
case type_floating_tag : {
|
|
|
751 |
FLOAT f = get_float ( t, 1 ) ;
|
|
|
752 |
MAKE_exp_float_lit ( t, f, e ) ;
|
|
|
753 |
break ;
|
|
|
754 |
}
|
|
|
755 |
case type_bitfield_tag : {
|
|
|
756 |
TYPE s = find_bitfield_type ( t ) ;
|
|
|
757 |
e = make_unit_exp ( s ) ;
|
|
|
758 |
MAKE_exp_cast ( t, ( CONV_BITFIELD | CONV_REVERSE ), e, e ) ;
|
|
|
759 |
break ;
|
|
|
760 |
}
|
|
|
761 |
default : {
|
|
|
762 |
FAIL ( Invalid unit type ) ;
|
|
|
763 |
MAKE_exp_null ( t, e ) ;
|
|
|
764 |
break ;
|
|
|
765 |
}
|
|
|
766 |
}
|
|
|
767 |
return ( e ) ;
|
|
|
768 |
}
|
|
|
769 |
|
|
|
770 |
|
|
|
771 |
/*
|
|
|
772 |
IS AN EXPRESSION NULL?
|
|
|
773 |
|
|
|
774 |
This routine checks whether the expression e is a null expression.
|
|
|
775 |
*/
|
|
|
776 |
|
|
|
777 |
int is_null_exp
|
|
|
778 |
PROTO_N ( ( e ) )
|
|
|
779 |
PROTO_T ( EXP e )
|
|
|
780 |
{
|
|
|
781 |
if ( IS_NULL_exp ( e ) ) return ( 1 ) ;
|
|
|
782 |
switch ( TAG_exp ( e ) ) {
|
|
|
783 |
case exp_int_lit_tag : {
|
|
|
784 |
NAT n = DEREF_nat ( exp_int_lit_nat ( e ) ) ;
|
|
|
785 |
return ( is_zero_nat ( n ) ) ;
|
|
|
786 |
}
|
|
|
787 |
case exp_float_lit_tag : {
|
|
|
788 |
FLOAT f = DEREF_flt ( exp_float_lit_flt ( e ) ) ;
|
|
|
789 |
return ( is_zero_float ( f ) ) ;
|
|
|
790 |
}
|
|
|
791 |
case exp_null_tag :
|
|
|
792 |
case exp_zero_tag : {
|
|
|
793 |
return ( 1 ) ;
|
|
|
794 |
}
|
|
|
795 |
case exp_aggregate_tag : {
|
|
|
796 |
LIST ( EXP ) p = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
797 |
while ( !IS_NULL_list ( p ) ) {
|
|
|
798 |
EXP a = DEREF_exp ( HEAD_list ( p ) ) ;
|
|
|
799 |
if ( !is_null_exp ( a ) ) return ( 0 ) ;
|
|
|
800 |
p = TAIL_list ( p ) ;
|
|
|
801 |
}
|
|
|
802 |
return ( 1 ) ;
|
|
|
803 |
}
|
|
|
804 |
case exp_nof_tag : {
|
|
|
805 |
EXP a = DEREF_exp ( exp_nof_start ( e ) ) ;
|
|
|
806 |
EXP b = DEREF_exp ( exp_nof_pad ( e ) ) ;
|
|
|
807 |
EXP c = DEREF_exp ( exp_nof_end ( e ) ) ;
|
|
|
808 |
if ( !is_null_exp ( a ) ) return ( 0 ) ;
|
|
|
809 |
if ( !is_null_exp ( b ) ) return ( 0 ) ;
|
|
|
810 |
return ( is_null_exp ( c ) ) ;
|
|
|
811 |
}
|
|
|
812 |
}
|
|
|
813 |
return ( 0 ) ;
|
|
|
814 |
}
|
|
|
815 |
|
|
|
816 |
|
|
|
817 |
/*
|
|
|
818 |
CREATE AN EMPTY INITIALISER
|
|
|
819 |
|
|
|
820 |
This routine creates an empty initialiser for the type t. Basically
|
|
|
821 |
this is the same as make_null_exp except that it also checks for
|
|
|
822 |
uninitialised references and const objects. Also if force is false
|
|
|
823 |
then a value is only created if absolutely necessary.
|
|
|
824 |
*/
|
|
|
825 |
|
|
|
826 |
EXP init_empty
|
|
|
827 |
PROTO_N ( ( t, cv, force, err ) )
|
|
|
828 |
PROTO_T ( TYPE t X CV_SPEC cv X int force X ERROR *err )
|
|
|
829 |
{
|
|
|
830 |
EXP e = NULL_exp ;
|
|
|
831 |
switch ( TAG_type ( t ) ) {
|
|
|
832 |
case type_array_tag : {
|
|
|
833 |
NAT n = DEREF_nat ( type_array_size ( t ) ) ;
|
|
|
834 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
835 |
e = init_empty ( s, cv, force, err ) ;
|
|
|
836 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
837 |
MAKE_exp_nof ( t, NULL_exp, n, e, NULL_exp, e ) ;
|
|
|
838 |
}
|
|
|
839 |
break ;
|
|
|
840 |
}
|
|
|
841 |
case type_ref_tag : {
|
|
|
842 |
/* References must be initialised */
|
|
|
843 |
TYPE s = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
844 |
add_error ( err, ERR_dcl_init_ref_none () ) ;
|
|
|
845 |
if ( IS_type_func ( s ) ) {
|
|
|
846 |
e = make_null_exp ( s ) ;
|
|
|
847 |
} else {
|
|
|
848 |
e = init_empty ( s, cv_none, 1, err ) ;
|
|
|
849 |
e = make_temporary ( s, e, NULL_exp, 1, err ) ;
|
|
|
850 |
e = make_ref_init ( t, e ) ;
|
|
|
851 |
}
|
|
|
852 |
break ;
|
|
|
853 |
}
|
|
|
854 |
case type_compound_tag : {
|
|
|
855 |
/* Call default constructor for classes */
|
|
|
856 |
e = init_default ( t, &e, DEFAULT_CONSTR, EXTRA_CONSTR, err ) ;
|
|
|
857 |
if ( IS_NULL_exp ( e ) ) goto default_lab ;
|
|
|
858 |
break ;
|
|
|
859 |
}
|
|
|
860 |
case type_enumerate_tag : {
|
|
|
861 |
if ( force ) {
|
|
|
862 |
/* Check for zero enumerator */
|
|
|
863 |
ENUM_TYPE et = DEREF_etype ( type_enumerate_defn ( t ) ) ;
|
|
|
864 |
CLASS_INFO ei = DEREF_cinfo ( etype_info ( et ) ) ;
|
|
|
865 |
if ( !( ei & cinfo_usr_constr ) ) {
|
|
|
866 |
add_error ( err, ERR_dcl_enum_zero ( t ) ) ;
|
|
|
867 |
}
|
|
|
868 |
}
|
|
|
869 |
goto default_lab ;
|
|
|
870 |
}
|
|
|
871 |
case type_token_tag : {
|
|
|
872 |
if ( is_templ_type ( t ) ) {
|
|
|
873 |
/* Allow for template parameters */
|
|
|
874 |
if ( force ) {
|
|
|
875 |
MAKE_exp_op ( t, lex_cast, NULL_exp, NULL_exp, e ) ;
|
|
|
876 |
}
|
|
|
877 |
break ;
|
|
|
878 |
}
|
|
|
879 |
goto default_lab ;
|
|
|
880 |
}
|
|
|
881 |
default :
|
|
|
882 |
default_lab : {
|
|
|
883 |
CV_SPEC qual = find_cv_qual ( t ) ;
|
|
|
884 |
qual |= cv ;
|
|
|
885 |
if ( qual & cv_const ) {
|
|
|
886 |
/* Const objects must be initialised */
|
|
|
887 |
add_error ( err, ERR_dcl_init_const () ) ;
|
|
|
888 |
}
|
|
|
889 |
if ( force ) e = make_null_exp ( t ) ;
|
|
|
890 |
break ;
|
|
|
891 |
}
|
|
|
892 |
}
|
|
|
893 |
return ( e ) ;
|
|
|
894 |
}
|
|
|
895 |
|
|
|
896 |
|
|
|
897 |
/*
|
|
|
898 |
LAST ARRAY INITIALISER SIZE
|
|
|
899 |
|
|
|
900 |
This variable is used to hold the number of elements in the last array
|
|
|
901 |
initialiser processed. It is subsequently used to calculate the bound
|
|
|
902 |
for an unbounded, but initialised, array type.
|
|
|
903 |
*/
|
|
|
904 |
|
|
|
905 |
static NAT last_array_size = NULL_nat ;
|
|
|
906 |
|
|
|
907 |
|
|
|
908 |
/*
|
|
|
909 |
IS A TYPE A CHARACTER ARRAY?
|
|
|
910 |
|
|
|
911 |
This routine checks whether the type t is an array of 'char', 'signed
|
|
|
912 |
char', 'unsigned char' 'wchar_t', and so may be initialised by a single
|
|
|
913 |
literal. It returns 1 for character arrays, 2 for wide character
|
|
|
914 |
arrays, and 3 for types compatible with wide character arrays.
|
|
|
915 |
*/
|
|
|
916 |
|
|
|
917 |
static int is_char_array
|
|
|
918 |
PROTO_N ( ( t ) )
|
|
|
919 |
PROTO_T ( TYPE t )
|
|
|
920 |
{
|
|
|
921 |
if ( IS_type_array ( t ) ) {
|
|
|
922 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
923 |
if ( check_int_type ( s, btype_char ) ) return ( 1 ) ;
|
|
|
924 |
if ( check_int_type ( s, btype_wchar_t ) ) return ( 2 ) ;
|
|
|
925 |
if ( !basetype_info [ ntype_wchar_t ].key ) {
|
|
|
926 |
s = type_composite ( s, type_wchar_t, 1, 0, KILL_err, 0 ) ;
|
|
|
927 |
if ( !IS_NULL_type ( s ) ) return ( 3 ) ;
|
|
|
928 |
}
|
|
|
929 |
}
|
|
|
930 |
return ( 0 ) ;
|
|
|
931 |
|
|
|
932 |
}
|
|
|
933 |
|
|
|
934 |
|
|
|
935 |
/*
|
|
|
936 |
PAD AN ARRAY INITIALISER
|
|
|
937 |
|
|
|
938 |
This routine pads the array initialiser e, which contains m elements,
|
|
|
939 |
with zeros until it matches the type t. n gives the bound size of t.
|
|
|
940 |
*/
|
|
|
941 |
|
|
|
942 |
static EXP pad_array
|
|
|
943 |
PROTO_N ( ( e, m, t, n, pad, err ) )
|
|
|
944 |
PROTO_T ( EXP e X NAT m X TYPE t X NAT n X int pad X ERROR *err )
|
|
|
945 |
{
|
|
|
946 |
EXP a ;
|
|
|
947 |
int eq ;
|
|
|
948 |
unsigned long c ;
|
|
|
949 |
ERROR err2 = NULL_err ;
|
|
|
950 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
951 |
|
|
|
952 |
/* Check for equality */
|
|
|
953 |
eq = compare_nat ( n, m ) ;
|
|
|
954 |
if ( eq == 0 ) {
|
|
|
955 |
return ( e ) ;
|
|
|
956 |
} else if ( eq == 1 ) {
|
|
|
957 |
if ( !pad ) return ( NULL_exp ) ;
|
|
|
958 |
} else if ( eq == -1 ) {
|
|
|
959 |
/* Too many initialisers */
|
|
|
960 |
if ( !pad ) return ( NULL_exp ) ;
|
|
|
961 |
add_error ( err, ERR_dcl_init_aggr_excess ( t ) ) ;
|
|
|
962 |
return ( e ) ;
|
|
|
963 |
} else {
|
|
|
964 |
/* Allow for token definitions */
|
|
|
965 |
force_tokdef++ ;
|
|
|
966 |
eq = eq_nat ( n, m ) ;
|
|
|
967 |
force_tokdef-- ;
|
|
|
968 |
if ( eq ) return ( e ) ;
|
|
|
969 |
if ( !pad ) return ( NULL_exp ) ;
|
|
|
970 |
}
|
|
|
971 |
|
|
|
972 |
/* Find number of uninitialised elements */
|
|
|
973 |
c = get_nat_value ( m ) ;
|
|
|
974 |
if ( c != 0 ) {
|
|
|
975 |
EXP en = calc_nat_value ( n, type_size_t ) ;
|
|
|
976 |
EXP em = calc_nat_value ( m, type_size_t ) ;
|
|
|
977 |
en = make_minus_exp ( en, em ) ;
|
|
|
978 |
if ( IS_exp_int_lit ( en ) ) {
|
|
|
979 |
n = DEREF_nat ( exp_int_lit_nat ( en ) ) ;
|
|
|
980 |
if ( pad && c > 1 && is_calc_nat ( n ) ) {
|
|
|
981 |
/* Warn about potentially dubious initialisers */
|
|
|
982 |
err2 = ERR_dcl_init_aggr_array_ti ( m, t ) ;
|
|
|
983 |
}
|
|
|
984 |
c = get_nat_value ( n ) ;
|
|
|
985 |
if ( c == 0 ) return ( e ) ;
|
|
|
986 |
}
|
|
|
987 |
}
|
|
|
988 |
|
|
|
989 |
/* Form initialiser */
|
|
|
990 |
if ( IS_NULL_err ( err2 ) ) err2 = ERR_dcl_init_aggr_pad ( n, t ) ;
|
|
|
991 |
if ( !IS_NULL_err ( err2 ) ) add_error ( err, err2 ) ;
|
|
|
992 |
a = init_empty ( s, cv_none, 1, err ) ;
|
|
|
993 |
if ( !IS_NULL_exp ( e ) && IS_exp_aggregate ( e ) ) {
|
|
|
994 |
if ( c <= ARRAY_PADDING ) {
|
|
|
995 |
/* Explicitly pad small arrays */
|
|
|
996 |
LIST ( EXP ) p = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
997 |
LIST ( EXP ) q = NULL_list ( EXP ) ;
|
|
|
998 |
while ( c ) {
|
|
|
999 |
CONS_exp ( a, q, q ) ;
|
|
|
1000 |
c-- ;
|
|
|
1001 |
}
|
|
|
1002 |
p = APPEND_list ( p, q ) ;
|
|
|
1003 |
COPY_list ( exp_aggregate_args ( e ), p ) ;
|
|
|
1004 |
COPY_type ( exp_type ( e ), t ) ;
|
|
|
1005 |
return ( e ) ;
|
|
|
1006 |
}
|
|
|
1007 |
}
|
|
|
1008 |
MAKE_exp_nof ( t, e, n, a, NULL_exp, e ) ;
|
|
|
1009 |
return ( e ) ;
|
|
|
1010 |
}
|
|
|
1011 |
|
|
|
1012 |
|
|
|
1013 |
/*
|
|
|
1014 |
CHECK AN ASSIGNMENT STYLE ARRAY INITIALISER
|
|
|
1015 |
|
|
|
1016 |
This routine checks the assignment style initialiser 't id = e ;' where
|
|
|
1017 |
t is an array type. If arr is true then e is allowed to be another
|
|
|
1018 |
array expression of compatible type. The routine returns the
|
|
|
1019 |
initialising expression for id.
|
|
|
1020 |
*/
|
|
|
1021 |
|
|
|
1022 |
EXP init_array
|
|
|
1023 |
PROTO_N ( ( t, cv, e, arr, err ) )
|
|
|
1024 |
PROTO_T ( TYPE t X CV_SPEC cv X EXP e X int arr X ERROR *err )
|
|
|
1025 |
{
|
|
|
1026 |
TYPE r = DEREF_type ( exp_type ( e ) ) ;
|
|
|
1027 |
NAT n = DEREF_nat ( type_array_size ( t ) ) ;
|
|
|
1028 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
1029 |
if ( IS_type_array ( r ) ) {
|
|
|
1030 |
unsigned tag = TAG_exp ( e ) ;
|
|
|
1031 |
NAT m = DEREF_nat ( type_array_size ( r ) ) ;
|
|
|
1032 |
TYPE u = DEREF_type ( type_array_sub ( r ) ) ;
|
|
|
1033 |
if ( IS_NULL_nat ( n ) ) n = m ;
|
|
|
1034 |
last_array_size = m ;
|
|
|
1035 |
|
|
|
1036 |
/* Check for templates */
|
|
|
1037 |
if ( in_template_decl ) {
|
|
|
1038 |
if ( is_templ_type ( s ) || is_templ_type ( u ) ) {
|
|
|
1039 |
e = cast_templ_type ( t, e, CAST_IMPLICIT ) ;
|
|
|
1040 |
return ( e ) ;
|
|
|
1041 |
}
|
|
|
1042 |
}
|
|
|
1043 |
|
|
|
1044 |
/* Initialisation by string literal */
|
|
|
1045 |
if ( tag == exp_string_lit_tag ) {
|
|
|
1046 |
unsigned long na, ma ;
|
|
|
1047 |
int ca = is_char_array ( t ) ;
|
|
|
1048 |
STRING str = DEREF_str ( exp_string_lit_str ( e ) ) ;
|
|
|
1049 |
unsigned kind = DEREF_unsigned ( str_simple_kind ( str ) ) ;
|
|
|
1050 |
if ( kind & STRING_WIDE ) {
|
|
|
1051 |
/* Wide string literals */
|
|
|
1052 |
if ( ca == 2 ) {
|
|
|
1053 |
u = s ;
|
|
|
1054 |
} else if ( ca == 3 ) {
|
|
|
1055 |
if ( IS_type_enumerate ( s ) ) {
|
|
|
1056 |
/* It could happen ... */
|
|
|
1057 |
EXP a ;
|
|
|
1058 |
ENUM_TYPE es ;
|
|
|
1059 |
MAKE_exp_value ( u, a ) ;
|
|
|
1060 |
a = cast_int_int ( s, a, err, CAST_IMPLICIT, -1 ) ;
|
|
|
1061 |
es = DEREF_etype ( type_enumerate_defn ( s ) ) ;
|
|
|
1062 |
s = DEREF_type ( etype_rep ( es ) ) ;
|
|
|
1063 |
free_exp ( a, 1 ) ;
|
|
|
1064 |
}
|
|
|
1065 |
} else {
|
|
|
1066 |
add_error ( err, ERR_dcl_init_string_wchar () ) ;
|
|
|
1067 |
}
|
|
|
1068 |
} else {
|
|
|
1069 |
/* Normal string literals */
|
|
|
1070 |
if ( ca == 1 ) {
|
|
|
1071 |
u = s ;
|
|
|
1072 |
} else {
|
|
|
1073 |
add_error ( err, ERR_dcl_init_string_char () ) ;
|
|
|
1074 |
}
|
|
|
1075 |
}
|
|
|
1076 |
if ( !EQ_type ( u, s ) ) {
|
|
|
1077 |
/* Deal with invalid cases */
|
|
|
1078 |
if ( IS_type_integer ( s ) ) {
|
|
|
1079 |
/* Cast string to appropriate type */
|
|
|
1080 |
MAKE_type_array ( cv_none, s, m, r ) ;
|
|
|
1081 |
MAKE_exp_string_lit ( r, str, e ) ;
|
|
|
1082 |
} else {
|
|
|
1083 |
/* Don't take any initialisers from the string */
|
|
|
1084 |
e = NULL_exp ;
|
|
|
1085 |
}
|
|
|
1086 |
}
|
|
|
1087 |
|
|
|
1088 |
/* Check array bound */
|
|
|
1089 |
na = get_nat_value ( n ) ;
|
|
|
1090 |
ma = get_nat_value ( m ) ;
|
|
|
1091 |
if ( na != EXTENDED_MAX ) {
|
|
|
1092 |
/* Known array bounds */
|
|
|
1093 |
if ( ma > na ) {
|
|
|
1094 |
/* Too many initialisers - trim string */
|
|
|
1095 |
if ( ma == na + 1 ) {
|
|
|
1096 |
add_error ( err, ERR_dcl_init_string_zero ( t ) ) ;
|
|
|
1097 |
} else {
|
|
|
1098 |
add_error ( err, ERR_dcl_init_string_excess ( t ) ) ;
|
|
|
1099 |
}
|
|
|
1100 |
MAKE_exp_string_lit ( t, str, e ) ;
|
|
|
1101 |
} else if ( ma < na ) {
|
|
|
1102 |
/* Not enough initialisers */
|
|
|
1103 |
NAT d = make_nat_value ( na - ma ) ;
|
|
|
1104 |
add_error ( err, ERR_dcl_init_aggr_pad ( d, t ) ) ;
|
|
|
1105 |
MAKE_exp_string_lit ( t, str, e ) ;
|
|
|
1106 |
}
|
|
|
1107 |
} else {
|
|
|
1108 |
/* Unknown array bounds */
|
|
|
1109 |
e = pad_array ( e, m, t, n, 1, err ) ;
|
|
|
1110 |
}
|
|
|
1111 |
return ( e ) ;
|
|
|
1112 |
}
|
|
|
1113 |
|
|
|
1114 |
/* Check array initialisers */
|
|
|
1115 |
if ( tag == exp_token_tag ) {
|
|
|
1116 |
/* Allow rvalue array tokens */
|
|
|
1117 |
CV_SPEC qual = DEREF_cv ( type_qual ( r ) ) ;
|
|
|
1118 |
if ( !( qual & cv_lvalue ) ) arr = 2 ;
|
|
|
1119 |
}
|
|
|
1120 |
e = convert_reference ( e, REF_ASSIGN ) ;
|
|
|
1121 |
if ( arr == 0 ) {
|
|
|
1122 |
/* Invalid array initialiser */
|
|
|
1123 |
report ( crt_loc, ERR_dcl_init_aggr_array_bad () ) ;
|
|
|
1124 |
if ( tag == exp_paren_tag ) {
|
|
|
1125 |
/* Parenthesised initialiser */
|
|
|
1126 |
e = init_array ( t, cv, e, arr, err ) ;
|
|
|
1127 |
return ( e ) ;
|
|
|
1128 |
}
|
|
|
1129 |
arr = 1 ;
|
|
|
1130 |
}
|
|
|
1131 |
if ( eq_type_unqual ( s, u ) ) {
|
|
|
1132 |
if ( arr != 2 ) {
|
|
|
1133 |
EXP d ;
|
|
|
1134 |
d = init_default ( r, &e, DEFAULT_COPY, EXTRA_CONSTR, err ) ;
|
|
|
1135 |
if ( IS_NULL_exp ( d ) ) {
|
|
|
1136 |
MAKE_exp_contents ( r, e, e ) ;
|
|
|
1137 |
} else {
|
|
|
1138 |
MAKE_exp_preinc ( r, e, d, lex_array, e ) ;
|
|
|
1139 |
}
|
|
|
1140 |
}
|
|
|
1141 |
e = pad_array ( e, m, t, n, arr - 1, err ) ;
|
|
|
1142 |
if ( !IS_NULL_exp ( e ) ) return ( e ) ;
|
|
|
1143 |
}
|
|
|
1144 |
add_error ( err, ERR_basic_link_incompat ( t, r ) ) ;
|
|
|
1145 |
} else {
|
|
|
1146 |
/* Other array initialisations are not allowed */
|
|
|
1147 |
report ( crt_loc, ERR_dcl_init_aggr_array_bad () ) ;
|
|
|
1148 |
last_array_size = NULL_nat ;
|
|
|
1149 |
}
|
|
|
1150 |
e = init_empty ( t, cv, 1, err ) ;
|
|
|
1151 |
return ( e ) ;
|
|
|
1152 |
}
|
|
|
1153 |
|
|
|
1154 |
|
|
|
1155 |
/*
|
|
|
1156 |
REPORT AN INITIALISATION ERROR
|
|
|
1157 |
|
|
|
1158 |
In C there is no distinction between conversion by initialisation and
|
|
|
1159 |
conversion by assignment. This routine adds a suitable error message
|
|
|
1160 |
to err which says that the conversion cannot be done by initialisation.
|
|
|
1161 |
*/
|
|
|
1162 |
|
|
|
1163 |
ERROR init_error
|
|
|
1164 |
PROTO_N ( ( err, init ) )
|
|
|
1165 |
PROTO_T ( ERROR err X int init )
|
|
|
1166 |
{
|
|
|
1167 |
ERROR ferr ;
|
|
|
1168 |
#if LANGUAGE_CPP
|
|
|
1169 |
ferr = ERR_dcl_init_conv () ;
|
|
|
1170 |
UNUSED ( init ) ;
|
|
|
1171 |
#else
|
|
|
1172 |
ferr = ERR_expr_ass_conv () ;
|
|
|
1173 |
if ( init ) ferr = concat_error ( ferr, ERR_dcl_init_assign () ) ;
|
|
|
1174 |
#endif
|
|
|
1175 |
err = concat_warning ( err, ferr ) ;
|
|
|
1176 |
return ( err ) ;
|
|
|
1177 |
}
|
|
|
1178 |
|
|
|
1179 |
|
|
|
1180 |
/*
|
|
|
1181 |
CHECK AN ASSIGNMENT STYLE INITIALISER
|
|
|
1182 |
|
|
|
1183 |
This routine checks the assignment style initialiser 'cv t id = e ;'.
|
|
|
1184 |
It returns a suitably converted version of e.
|
|
|
1185 |
*/
|
|
|
1186 |
|
|
|
1187 |
EXP init_assign
|
|
|
1188 |
PROTO_N ( ( t, cv, e, err ) )
|
|
|
1189 |
PROTO_T ( TYPE t X CV_SPEC cv X EXP e X ERROR *err )
|
|
|
1190 |
{
|
|
|
1191 |
switch ( TAG_type ( t ) ) {
|
|
|
1192 |
case type_array_tag : {
|
|
|
1193 |
/* Array initialisers */
|
|
|
1194 |
e = init_array ( t, cv, e, 0, err ) ;
|
|
|
1195 |
break ;
|
|
|
1196 |
}
|
|
|
1197 |
case type_ref_tag : {
|
|
|
1198 |
/* Reference initialisers */
|
|
|
1199 |
EXP a ;
|
|
|
1200 |
TYPE s = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
1201 |
TYPE r = DEREF_type ( exp_type ( e ) ) ;
|
|
|
1202 |
if ( IS_type_compound ( r ) ) {
|
|
|
1203 |
if ( IS_type_compound ( s ) ) {
|
|
|
1204 |
/* Check base class conversions first */
|
|
|
1205 |
a = init_ref_lvalue ( s, e, err ) ;
|
|
|
1206 |
if ( !IS_NULL_exp ( a ) ) {
|
|
|
1207 |
e = make_ref_init ( t, a ) ;
|
|
|
1208 |
break ;
|
|
|
1209 |
}
|
|
|
1210 |
}
|
|
|
1211 |
a = convert_conv_aux ( t, e, err, CAST_IMPLICIT ) ;
|
|
|
1212 |
if ( !IS_NULL_exp ( a ) ) {
|
|
|
1213 |
e = a ;
|
|
|
1214 |
r = DEREF_type ( exp_type ( e ) ) ;
|
|
|
1215 |
if ( eq_type ( r, t ) ) break ;
|
|
|
1216 |
e = convert_reference ( e, REF_ASSIGN ) ;
|
|
|
1217 |
}
|
|
|
1218 |
}
|
|
|
1219 |
a = init_ref_lvalue ( s, e, err ) ;
|
|
|
1220 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
1221 |
a = init_ref_rvalue ( s, e, err ) ;
|
|
|
1222 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
1223 |
e = init_assign ( s, cv_none, e, err ) ;
|
|
|
1224 |
if ( !IS_exp_null ( e ) ) {
|
|
|
1225 |
e = make_temporary ( s, e, NULL_exp, 1, err ) ;
|
|
|
1226 |
}
|
|
|
1227 |
} else {
|
|
|
1228 |
e = a ;
|
|
|
1229 |
}
|
|
|
1230 |
} else {
|
|
|
1231 |
e = a ;
|
|
|
1232 |
}
|
|
|
1233 |
e = make_ref_init ( t, e ) ;
|
|
|
1234 |
break ;
|
|
|
1235 |
}
|
|
|
1236 |
case type_compound_tag : {
|
|
|
1237 |
/* Class initialisers */
|
|
|
1238 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
1239 |
if ( IS_type_compound ( s ) ) {
|
|
|
1240 |
/* Check for base class initialisers */
|
|
|
1241 |
CLASS_TYPE cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
1242 |
CLASS_TYPE ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
1243 |
GRAPH gr = find_base_class ( cs, ct, 1 ) ;
|
|
|
1244 |
if ( !IS_NULL_graph ( gr ) ) {
|
|
|
1245 |
e = init_direct ( t, e, err ) ;
|
|
|
1246 |
break ;
|
|
|
1247 |
}
|
|
|
1248 |
}
|
|
|
1249 |
e = convert_conv ( t, e, err, CAST_IMPLICIT ) ;
|
|
|
1250 |
if ( !IS_exp_null ( e ) ) {
|
|
|
1251 |
e = make_temporary ( t, e, NULL_exp, 0, err ) ;
|
|
|
1252 |
e = init_direct ( t, e, err ) ;
|
|
|
1253 |
e = remove_temporary ( e, NULL_exp ) ;
|
|
|
1254 |
}
|
|
|
1255 |
break ;
|
|
|
1256 |
}
|
|
|
1257 |
default : {
|
|
|
1258 |
/* Do conversion by initialisation */
|
|
|
1259 |
e = convert_assign ( t, e, err ) ;
|
|
|
1260 |
break ;
|
|
|
1261 |
}
|
|
|
1262 |
}
|
|
|
1263 |
return ( e ) ;
|
|
|
1264 |
}
|
|
|
1265 |
|
|
|
1266 |
|
|
|
1267 |
/*
|
|
|
1268 |
CHECK A CONSTRUCTOR STYLE INITIALISER
|
|
|
1269 |
|
|
|
1270 |
This routine checks the constructor style initialiser 't id ( args ) ;'.
|
|
|
1271 |
It returns an expression representing the result of converting args to
|
|
|
1272 |
type t.
|
|
|
1273 |
*/
|
|
|
1274 |
|
|
|
1275 |
EXP init_constr
|
|
|
1276 |
PROTO_N ( ( t, args, err ) )
|
|
|
1277 |
PROTO_T ( TYPE t X LIST ( EXP ) args X ERROR *err )
|
|
|
1278 |
{
|
|
|
1279 |
EXP e ;
|
|
|
1280 |
unsigned tag = TAG_type ( t ) ;
|
|
|
1281 |
switch ( tag ) {
|
|
|
1282 |
case type_ref_tag : {
|
|
|
1283 |
/* Reference initialisers */
|
|
|
1284 |
EXP a ;
|
|
|
1285 |
TYPE s = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
1286 |
if ( LENGTH_list ( args ) == 1 ) {
|
|
|
1287 |
a = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
1288 |
a = init_ref_lvalue ( s, a, err ) ;
|
|
|
1289 |
} else {
|
|
|
1290 |
a = NULL_exp ;
|
|
|
1291 |
}
|
|
|
1292 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
1293 |
a = init_ref_rvalue ( s, a, err ) ;
|
|
|
1294 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
1295 |
e = init_constr ( s, args, err ) ;
|
|
|
1296 |
if ( !IS_exp_null ( e ) ) {
|
|
|
1297 |
e = make_temporary ( s, e, NULL_exp, 1, err ) ;
|
|
|
1298 |
}
|
|
|
1299 |
} else {
|
|
|
1300 |
e = a ;
|
|
|
1301 |
}
|
|
|
1302 |
} else {
|
|
|
1303 |
e = a ;
|
|
|
1304 |
}
|
|
|
1305 |
e = make_ref_init ( t, e ) ;
|
|
|
1306 |
break ;
|
|
|
1307 |
}
|
|
|
1308 |
case type_compound_tag : {
|
|
|
1309 |
/* Class constructor initialisers */
|
|
|
1310 |
e = convert_constr ( t, args, err, CAST_STATIC ) ;
|
|
|
1311 |
e = remove_temporary ( e, NULL_exp ) ;
|
|
|
1312 |
break ;
|
|
|
1313 |
}
|
|
|
1314 |
case type_token_tag : {
|
|
|
1315 |
/* Check for template parameters */
|
|
|
1316 |
if ( is_templ_type ( t ) ) {
|
|
|
1317 |
LIST ( OFFSET ) offs = NULL_list ( OFFSET ) ;
|
|
|
1318 |
MAKE_exp_initialiser ( t, args, offs, 0, 0, 0, e ) ;
|
|
|
1319 |
e = cast_templ_type ( t, e, CAST_IMPLICIT ) ;
|
|
|
1320 |
break ;
|
|
|
1321 |
}
|
|
|
1322 |
goto default_lab ;
|
|
|
1323 |
}
|
|
|
1324 |
default :
|
|
|
1325 |
default_lab : {
|
|
|
1326 |
/* Should have at most one argument otherwise */
|
|
|
1327 |
unsigned nargs = LENGTH_list ( args ) ;
|
|
|
1328 |
if ( nargs == 0 ) {
|
|
|
1329 |
e = init_empty ( t, cv_none, 1, err ) ;
|
|
|
1330 |
} else {
|
|
|
1331 |
EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
1332 |
DESTROY_list ( args, SIZE_exp ) ;
|
|
|
1333 |
if ( nargs > 1 ) {
|
|
|
1334 |
/* Can't have more than one initialiser */
|
|
|
1335 |
add_error ( err, ERR_dcl_init_ctor ( t ) ) ;
|
|
|
1336 |
}
|
|
|
1337 |
if ( tag == type_array_tag ) {
|
|
|
1338 |
e = init_array ( t, cv_none, a, 0, err ) ;
|
|
|
1339 |
} else {
|
|
|
1340 |
TYPE s = DEREF_type ( exp_type ( a ) ) ;
|
|
|
1341 |
if ( IS_type_compound ( s ) ) {
|
|
|
1342 |
e = convert_conv ( t, a, err, CAST_STATIC ) ;
|
|
|
1343 |
} else {
|
|
|
1344 |
e = convert_assign ( t, a, err ) ;
|
|
|
1345 |
}
|
|
|
1346 |
}
|
|
|
1347 |
}
|
|
|
1348 |
break ;
|
|
|
1349 |
}
|
|
|
1350 |
}
|
|
|
1351 |
return ( e ) ;
|
|
|
1352 |
}
|
|
|
1353 |
|
|
|
1354 |
|
|
|
1355 |
/*
|
|
|
1356 |
CHECK A DIRECT INITIALISER
|
|
|
1357 |
|
|
|
1358 |
This routine checks the direct initialiser 't id ( a ) ;'. It is
|
|
|
1359 |
a special case of init_constr in which there is only one initialiser.
|
|
|
1360 |
*/
|
|
|
1361 |
|
|
|
1362 |
EXP init_direct
|
|
|
1363 |
PROTO_N ( ( t, a, err ) )
|
|
|
1364 |
PROTO_T ( TYPE t X EXP a X ERROR *err )
|
|
|
1365 |
{
|
|
|
1366 |
LIST ( EXP ) args ;
|
|
|
1367 |
CONS_exp ( a, NULL_list ( EXP ), args ) ;
|
|
|
1368 |
a = init_constr ( t, args, err ) ;
|
|
|
1369 |
return ( a ) ;
|
|
|
1370 |
}
|
|
|
1371 |
|
|
|
1372 |
|
|
|
1373 |
/*
|
|
|
1374 |
FIELD NAME BUFFER
|
|
|
1375 |
|
|
|
1376 |
This buffer is used to build up field names for use in error reporting.
|
|
|
1377 |
*/
|
|
|
1378 |
|
|
|
1379 |
BUFFER field_buff = NULL_buff ;
|
|
|
1380 |
|
|
|
1381 |
|
|
|
1382 |
/*
|
|
|
1383 |
SET LOCATION FROM AN AGGREGATE INITIALISER
|
|
|
1384 |
|
|
|
1385 |
Because aggregate initialisers may be spread over several lines each
|
|
|
1386 |
component is embedded in a location expression. This routine gets
|
|
|
1387 |
the first element of the aggregate list p, setting the current location
|
|
|
1388 |
as appropriate. It returns the tag of e (ignoring parentheses) via
|
|
|
1389 |
ptag.
|
|
|
1390 |
*/
|
|
|
1391 |
|
|
|
1392 |
static EXP get_aggr_elem
|
|
|
1393 |
PROTO_N ( ( p, ptag ) )
|
|
|
1394 |
PROTO_T ( LIST ( EXP ) p X unsigned *ptag )
|
|
|
1395 |
{
|
|
|
1396 |
EXP a = DEREF_exp ( HEAD_list ( p ) ) ;
|
|
|
1397 |
if ( !IS_NULL_exp ( a ) ) {
|
|
|
1398 |
if ( IS_exp_location ( a ) ) {
|
|
|
1399 |
TYPE t ;
|
|
|
1400 |
DESTROY_exp_location ( destroy, t, crt_loc, a, a ) ;
|
|
|
1401 |
UNUSED ( t ) ;
|
|
|
1402 |
COPY_exp ( HEAD_list ( p ), a ) ;
|
|
|
1403 |
}
|
|
|
1404 |
if ( !IS_NULL_exp ( a ) ) {
|
|
|
1405 |
EXP b = a ;
|
|
|
1406 |
unsigned tag = TAG_exp ( b ) ;
|
|
|
1407 |
while ( tag == exp_paren_tag ) {
|
|
|
1408 |
b = DEREF_exp ( exp_paren_arg ( b ) ) ;
|
|
|
1409 |
tag = TAG_exp ( b ) ;
|
|
|
1410 |
}
|
|
|
1411 |
*ptag = tag ;
|
|
|
1412 |
}
|
|
|
1413 |
}
|
|
|
1414 |
return ( a ) ;
|
|
|
1415 |
}
|
|
|
1416 |
|
|
|
1417 |
|
|
|
1418 |
/*
|
|
|
1419 |
CHECK AN AGGREGATE INITIALISER
|
|
|
1420 |
|
|
|
1421 |
This routine checks the aggregate initialiser expression list pointed
|
|
|
1422 |
to by r against the type t. The argument start is 1 to indicate the
|
|
|
1423 |
presence of a open brace immediately preceding r and 2 to indicate
|
|
|
1424 |
the top-level aggregate. The result is a structured aggregate
|
|
|
1425 |
initialiser expression for compound types t or a suitably converted
|
|
|
1426 |
initialiser expression.
|
|
|
1427 |
*/
|
|
|
1428 |
|
|
|
1429 |
static EXP init_aggr_aux
|
|
|
1430 |
PROTO_N ( ( t, cv, r, start, id, err ) )
|
|
|
1431 |
PROTO_T ( TYPE t X CV_SPEC cv X LIST ( EXP ) *r X int start X
|
|
|
1432 |
IDENTIFIER id X ERROR *err )
|
|
|
1433 |
{
|
|
|
1434 |
EXP e ;
|
|
|
1435 |
LIST ( EXP ) p = *r ;
|
|
|
1436 |
ERROR cerr = NULL_err ;
|
|
|
1437 |
CLASS_INFO ci = cinfo_none ;
|
|
|
1438 |
unsigned tag = TAG_type ( t ) ;
|
|
|
1439 |
switch ( tag ) {
|
|
|
1440 |
|
|
|
1441 |
case type_array_tag : {
|
|
|
1442 |
/* Array types */
|
|
|
1443 |
NAT nc ;
|
|
|
1444 |
LIST ( EXP ) a = NULL_list ( EXP ) ;
|
|
|
1445 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
1446 |
int str = is_char_array ( s ) ;
|
|
|
1447 |
BUFFER *bf = &field_buff ;
|
|
|
1448 |
unsigned boff = ( unsigned ) ( bf->posn - bf->start ) ;
|
|
|
1449 |
|
|
|
1450 |
/* Find the array size */
|
|
|
1451 |
NAT n = DEREF_nat ( type_array_size ( t ) ) ;
|
|
|
1452 |
unsigned long m = get_nat_value ( n ) ;
|
|
|
1453 |
unsigned long c = 0 ;
|
|
|
1454 |
|
|
|
1455 |
/* Report partially bracketed initialisers */
|
|
|
1456 |
if ( !start ) add_error ( err, ERR_dcl_init_aggr_partial () ) ;
|
|
|
1457 |
|
|
|
1458 |
/* Check for string literals in braces */
|
|
|
1459 |
if ( start && !IS_NULL_list ( p ) ) {
|
|
|
1460 |
unsigned et = null_tag ;
|
|
|
1461 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1462 |
if ( et == exp_string_lit_tag && is_char_array ( t ) ) {
|
|
|
1463 |
e = init_array ( t, cv, e, 0, err ) ;
|
|
|
1464 |
p = TAIL_list ( p ) ;
|
|
|
1465 |
break ;
|
|
|
1466 |
}
|
|
|
1467 |
}
|
|
|
1468 |
|
|
|
1469 |
/* Loop through at most m initialisers */
|
|
|
1470 |
while ( !IS_NULL_list ( p ) && c != m ) {
|
|
|
1471 |
LIST ( EXP ) p0 = p ;
|
|
|
1472 |
ERROR serr = NULL_err ;
|
|
|
1473 |
unsigned et = null_tag ;
|
|
|
1474 |
|
|
|
1475 |
/* Build up the field name */
|
|
|
1476 |
bfprintf ( bf, " [%lu]", c ) ;
|
|
|
1477 |
|
|
|
1478 |
/* Check first element of aggregate */
|
|
|
1479 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1480 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
1481 |
/* Can occur in template initialisers */
|
|
|
1482 |
e = init_empty ( s, cv_none, 1, &serr ) ;
|
|
|
1483 |
COPY_exp ( HEAD_list ( p ), e ) ;
|
|
|
1484 |
}
|
|
|
1485 |
if ( et == exp_string_lit_tag && str ) {
|
|
|
1486 |
/* Check for string literals */
|
|
|
1487 |
e = init_array ( s, cv, e, 0, &serr ) ;
|
|
|
1488 |
p = TAIL_list ( p ) ;
|
|
|
1489 |
} else if ( et == exp_aggregate_tag && start ) {
|
|
|
1490 |
/* Check for sub-aggregates */
|
|
|
1491 |
LIST ( EXP ) q ;
|
|
|
1492 |
q = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1493 |
e = init_aggr_aux ( s, cv, &q, 1, id, &serr ) ;
|
|
|
1494 |
p = TAIL_list ( p ) ;
|
|
|
1495 |
} else {
|
|
|
1496 |
/* Otherwise read constituents from p */
|
|
|
1497 |
e = init_aggr_aux ( s, cv, &p, 0, id, &serr ) ;
|
|
|
1498 |
}
|
|
|
1499 |
|
|
|
1500 |
/* Report any errors for this member */
|
|
|
1501 |
if ( !IS_NULL_err ( serr ) ) {
|
|
|
1502 |
ERROR ferr = ERR_dcl_init_decl ( id, bf->start ) ;
|
|
|
1503 |
serr = concat_error ( ferr, serr ) ;
|
|
|
1504 |
report ( crt_loc, serr ) ;
|
|
|
1505 |
}
|
|
|
1506 |
|
|
|
1507 |
/* Check for dynamic initialisers */
|
|
|
1508 |
e = dynamic_init ( id, bf->start, e ) ;
|
|
|
1509 |
|
|
|
1510 |
/* Restore the field name */
|
|
|
1511 |
bf->posn = bf->start + boff ;
|
|
|
1512 |
bf->posn [0] = 0 ;
|
|
|
1513 |
|
|
|
1514 |
/* Check that some initialisers were used up */
|
|
|
1515 |
if ( EQ_list ( p, p0 ) ) break ;
|
|
|
1516 |
|
|
|
1517 |
/* Build up the result (in reverse order) */
|
|
|
1518 |
CONS_exp ( e, a, a ) ;
|
|
|
1519 |
c++ ;
|
|
|
1520 |
}
|
|
|
1521 |
|
|
|
1522 |
/* Construct the result */
|
|
|
1523 |
a = REVERSE_list ( a ) ;
|
|
|
1524 |
nc = make_nat_value ( c ) ;
|
|
|
1525 |
MAKE_type_array ( cv_none, s, nc, s ) ;
|
|
|
1526 |
MAKE_exp_aggregate ( s, a, NULL_list ( OFFSET ), e ) ;
|
|
|
1527 |
|
|
|
1528 |
/* Check array size */
|
|
|
1529 |
if ( !IS_NULL_nat ( n ) ) {
|
|
|
1530 |
e = pad_array ( e, nc, t, n, 1, err ) ;
|
|
|
1531 |
}
|
|
|
1532 |
last_array_size = nc ;
|
|
|
1533 |
break ;
|
|
|
1534 |
}
|
|
|
1535 |
|
|
|
1536 |
case type_ref_tag : {
|
|
|
1537 |
/* Reference types */
|
|
|
1538 |
TYPE s = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
1539 |
e = init_ref_rvalue ( s, NULL_exp, err ) ;
|
|
|
1540 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
1541 |
e = init_aggr_aux ( s, cv, r, start, id, err ) ;
|
|
|
1542 |
e = make_temporary ( s, e, NULL_exp, 1, err ) ;
|
|
|
1543 |
e = make_ref_init ( t, e ) ;
|
|
|
1544 |
}
|
|
|
1545 |
return ( e ) ;
|
|
|
1546 |
}
|
|
|
1547 |
|
|
|
1548 |
case type_compound_tag : {
|
|
|
1549 |
/* Compound types */
|
|
|
1550 |
MEMBER mem ;
|
|
|
1551 |
NAMESPACE ns ;
|
|
|
1552 |
unsigned long pads = 0 ;
|
|
|
1553 |
LIST ( EXP ) a = NULL_list ( EXP ) ;
|
|
|
1554 |
LIST ( OFFSET ) b = NULL_list ( OFFSET ) ;
|
|
|
1555 |
CV_SPEC cv1 = ( DEREF_cv ( type_qual ( t ) ) | cv ) ;
|
|
|
1556 |
CLASS_TYPE ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
1557 |
GRAPH gr = DEREF_graph ( ctype_base ( ct ) ) ;
|
|
|
1558 |
LIST ( GRAPH ) br = DEREF_list ( graph_tails ( gr ) ) ;
|
|
|
1559 |
BUFFER *bf = &field_buff ;
|
|
|
1560 |
unsigned boff = ( unsigned ) ( bf->posn - bf->start ) ;
|
|
|
1561 |
|
|
|
1562 |
/* Check for non-aggregate classes */
|
|
|
1563 |
ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
1564 |
if ( !( ci & cinfo_defined ) ) {
|
|
|
1565 |
/* Instantiate template types if necessary */
|
|
|
1566 |
complete_class ( ct, 1 ) ;
|
|
|
1567 |
ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
1568 |
}
|
|
|
1569 |
if ( !( ci & cinfo_complete ) ) {
|
|
|
1570 |
/* Incomplete types can't be initialised */
|
|
|
1571 |
goto incomplete_lab ;
|
|
|
1572 |
}
|
|
|
1573 |
if ( ci & cinfo_non_aggregate ) {
|
|
|
1574 |
/* Types with these properties can't be initialised */
|
|
|
1575 |
cerr = class_info ( ct, cinfo_non_aggregate, 1 ) ;
|
|
|
1576 |
if ( ci & cinfo_token ) goto token_lab ;
|
|
|
1577 |
if ( ci & cinfo_usr_constr ) goto non_aggregate_lab ;
|
|
|
1578 |
add_error ( err, cerr ) ;
|
|
|
1579 |
add_error ( err, ERR_dcl_init_aggr_type ( t ) ) ;
|
|
|
1580 |
cerr = NULL_err ;
|
|
|
1581 |
}
|
|
|
1582 |
|
|
|
1583 |
/* Check for non-aggregate initialisations */
|
|
|
1584 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
1585 |
unsigned rank ;
|
|
|
1586 |
CONVERSION conv ;
|
|
|
1587 |
unsigned et = null_tag ;
|
|
|
1588 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1589 |
conv.from = DEREF_type ( exp_type ( e ) ) ;
|
|
|
1590 |
conv.to = t ;
|
|
|
1591 |
rank = std_convert_seq ( &conv, e, 0, 0 ) ;
|
|
|
1592 |
if ( rank != CONV_NONE ) goto non_aggregate_lab ;
|
|
|
1593 |
}
|
|
|
1594 |
|
|
|
1595 |
/* Report partially bracketed initialisers */
|
|
|
1596 |
if ( !start ) add_error ( err, ERR_dcl_init_aggr_partial () ) ;
|
|
|
1597 |
|
|
|
1598 |
/* Loop through base classes */
|
|
|
1599 |
while ( !IS_NULL_list ( br ) ) {
|
|
|
1600 |
ERROR serr = NULL_err ;
|
|
|
1601 |
GRAPH gs = DEREF_graph ( HEAD_list ( br ) ) ;
|
|
|
1602 |
OFFSET off = DEREF_off ( graph_off ( gs ) ) ;
|
|
|
1603 |
CLASS_TYPE cs = DEREF_ctype ( graph_head ( gs ) ) ;
|
|
|
1604 |
TYPE s = make_class_type ( cs ) ;
|
|
|
1605 |
|
|
|
1606 |
/* Build up field name */
|
|
|
1607 |
IDENTIFIER sid = DEREF_id ( ctype_name ( cs ) ) ;
|
|
|
1608 |
HASHID snm = DEREF_hashid ( id_name ( sid ) ) ;
|
|
|
1609 |
if ( !IS_hashid_anon ( snm ) ) {
|
|
|
1610 |
bfputc ( bf, '.' ) ;
|
|
|
1611 |
IGNORE print_hashid ( snm, 1, 0, bf, 0 ) ;
|
|
|
1612 |
}
|
|
|
1613 |
|
|
|
1614 |
/* Check next initialiser */
|
|
|
1615 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
1616 |
unsigned et = null_tag ;
|
|
|
1617 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1618 |
if ( et == exp_aggregate_tag && start ) {
|
|
|
1619 |
/* Check for sub-aggregates */
|
|
|
1620 |
LIST ( EXP ) q ;
|
|
|
1621 |
q = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1622 |
e = init_aggr_aux ( s, cv1, &q, 1, id, &serr ) ;
|
|
|
1623 |
p = TAIL_list ( p ) ;
|
|
|
1624 |
} else {
|
|
|
1625 |
/* Otherwise read constituents from p */
|
|
|
1626 |
e = init_aggr_aux ( s, cv1, &p, 0, id, &serr ) ;
|
|
|
1627 |
}
|
|
|
1628 |
} else {
|
|
|
1629 |
e = init_empty ( s, cv1, 1, &serr ) ;
|
|
|
1630 |
pads++ ;
|
|
|
1631 |
}
|
|
|
1632 |
|
|
|
1633 |
/* Report any errors for this field */
|
|
|
1634 |
if ( !IS_NULL_err ( serr ) ) {
|
|
|
1635 |
ERROR ferr = ERR_dcl_init_decl ( id, bf->start ) ;
|
|
|
1636 |
serr = concat_error ( ferr, serr ) ;
|
|
|
1637 |
report ( crt_loc, serr ) ;
|
|
|
1638 |
}
|
|
|
1639 |
|
|
|
1640 |
/* Check for dynamic initialisers */
|
|
|
1641 |
e = dynamic_init ( id, bf->start, e ) ;
|
|
|
1642 |
|
|
|
1643 |
/* Restore field name */
|
|
|
1644 |
bf->posn = bf->start + boff ;
|
|
|
1645 |
bf->posn [0] = 0 ;
|
|
|
1646 |
|
|
|
1647 |
/* Build up the result (in reverse order) */
|
|
|
1648 |
CONS_exp ( e, a, a ) ;
|
|
|
1649 |
CONS_off ( off, b, b ) ;
|
|
|
1650 |
br = TAIL_list ( br ) ;
|
|
|
1651 |
}
|
|
|
1652 |
|
|
|
1653 |
/* Find list of class members */
|
|
|
1654 |
ns = DEREF_nspace ( ctype_member ( ct ) ) ;
|
|
|
1655 |
mem = DEREF_member ( nspace_ctype_first ( ns ) ) ;
|
|
|
1656 |
mem = next_data_member ( mem, 0 ) ;
|
|
|
1657 |
|
|
|
1658 |
/* Loop through structure members */
|
|
|
1659 |
while ( !IS_NULL_member ( mem ) ) {
|
|
|
1660 |
ERROR serr = NULL_err ;
|
|
|
1661 |
CV_SPEC cv2 = cv1 ;
|
|
|
1662 |
IDENTIFIER sid = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1663 |
TYPE s = DEREF_type ( id_member_type ( sid ) ) ;
|
|
|
1664 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( sid ) ) ;
|
|
|
1665 |
OFFSET off = DEREF_off ( id_member_off ( sid ) ) ;
|
|
|
1666 |
|
|
|
1667 |
/* Build up field name */
|
|
|
1668 |
HASHID snm = DEREF_hashid ( id_name ( sid ) ) ;
|
|
|
1669 |
if ( !IS_hashid_anon ( snm ) ) {
|
|
|
1670 |
bfputc ( bf, '.' ) ;
|
|
|
1671 |
IGNORE print_hashid ( snm, 1, 0, bf, 0 ) ;
|
|
|
1672 |
}
|
|
|
1673 |
|
|
|
1674 |
/* Adjust cv-qualifiers */
|
|
|
1675 |
if ( ds & dspec_mutable ) cv2 = cv_none ;
|
|
|
1676 |
|
|
|
1677 |
/* Check next initialiser */
|
|
|
1678 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
1679 |
unsigned et = null_tag ;
|
|
|
1680 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1681 |
if ( et == exp_string_lit_tag && is_char_array ( s ) ) {
|
|
|
1682 |
/* Check for string literals */
|
|
|
1683 |
e = init_array ( s, cv2, e, 0, &serr ) ;
|
|
|
1684 |
p = TAIL_list ( p ) ;
|
|
|
1685 |
} else if ( et == exp_aggregate_tag && start ) {
|
|
|
1686 |
/* Check for sub-aggregates */
|
|
|
1687 |
LIST ( EXP ) q ;
|
|
|
1688 |
q = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1689 |
e = init_aggr_aux ( s, cv2, &q, 1, id, &serr ) ;
|
|
|
1690 |
p = TAIL_list ( p ) ;
|
|
|
1691 |
} else {
|
|
|
1692 |
/* Otherwise read constituents from p */
|
|
|
1693 |
e = init_aggr_aux ( s, cv2, &p, 0, id, &serr ) ;
|
|
|
1694 |
}
|
|
|
1695 |
} else {
|
|
|
1696 |
/* Pad rest of structure */
|
|
|
1697 |
e = init_empty ( s, cv2, 1, &serr ) ;
|
|
|
1698 |
pads++ ;
|
|
|
1699 |
}
|
|
|
1700 |
|
|
|
1701 |
/* Report any errors for this field */
|
|
|
1702 |
if ( !IS_NULL_err ( serr ) ) {
|
|
|
1703 |
ERROR ferr = ERR_dcl_init_decl ( id, bf->start ) ;
|
|
|
1704 |
serr = concat_error ( ferr, serr ) ;
|
|
|
1705 |
report ( crt_loc, serr ) ;
|
|
|
1706 |
}
|
|
|
1707 |
|
|
|
1708 |
/* Check for dynamic initialisers */
|
|
|
1709 |
e = dynamic_init ( id, bf->start, e ) ;
|
|
|
1710 |
|
|
|
1711 |
/* Restore field name */
|
|
|
1712 |
bf->posn = bf->start + boff ;
|
|
|
1713 |
bf->posn [0] = 0 ;
|
|
|
1714 |
|
|
|
1715 |
/* Build up the result (in reverse order) */
|
|
|
1716 |
CONS_exp ( e, a, a ) ;
|
|
|
1717 |
CONS_off ( off, b, b ) ;
|
|
|
1718 |
|
|
|
1719 |
/* Examine next member */
|
|
|
1720 |
if ( ci & cinfo_union ) break ;
|
|
|
1721 |
mem = DEREF_member ( member_next ( mem ) ) ;
|
|
|
1722 |
mem = next_data_member ( mem, 0 ) ;
|
|
|
1723 |
}
|
|
|
1724 |
|
|
|
1725 |
/* Report padded structures */
|
|
|
1726 |
if ( pads ) {
|
|
|
1727 |
NAT n = make_nat_value ( pads ) ;
|
|
|
1728 |
add_error ( err, ERR_dcl_init_aggr_pad ( n, t ) ) ;
|
|
|
1729 |
}
|
|
|
1730 |
|
|
|
1731 |
/* Construct the result */
|
|
|
1732 |
a = REVERSE_list ( a ) ;
|
|
|
1733 |
b = REVERSE_list ( b ) ;
|
|
|
1734 |
MAKE_exp_aggregate ( t, a, b, e ) ;
|
|
|
1735 |
break ;
|
|
|
1736 |
}
|
|
|
1737 |
|
|
|
1738 |
case type_integer_tag :
|
|
|
1739 |
case type_floating_tag :
|
|
|
1740 |
case type_enumerate_tag :
|
|
|
1741 |
case type_ptr_tag :
|
|
|
1742 |
case type_ptr_mem_tag : {
|
|
|
1743 |
/* Scalar types */
|
|
|
1744 |
if ( IS_NULL_list ( p ) ) {
|
|
|
1745 |
/* Can't have empty initialiser */
|
|
|
1746 |
add_error ( err, ERR_dcl_init_aggr_no_scalar () ) ;
|
|
|
1747 |
e = init_empty ( t, cv, 1, err ) ;
|
|
|
1748 |
} else {
|
|
|
1749 |
/* The first element must be a scalar */
|
|
|
1750 |
unsigned et = null_tag ;
|
|
|
1751 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1752 |
if ( et == exp_aggregate_tag ) {
|
|
|
1753 |
LIST ( EXP ) q ;
|
|
|
1754 |
q = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1755 |
e = init_aggr_aux ( t, cv, &q, 1, id, err ) ;
|
|
|
1756 |
} else {
|
|
|
1757 |
ERROR ferr = NULL_err ;
|
|
|
1758 |
if ( start == 1 ) {
|
|
|
1759 |
/* Can only have aggregate at top level */
|
|
|
1760 |
ferr = ERR_dcl_init_aggr_nest () ;
|
|
|
1761 |
}
|
|
|
1762 |
e = convert_reference ( e, REF_ASSIGN ) ;
|
|
|
1763 |
e = init_assign ( t, cv, e, &ferr ) ;
|
|
|
1764 |
if ( !IS_NULL_err ( ferr ) ) {
|
|
|
1765 |
ferr = init_error ( ferr, 1 ) ;
|
|
|
1766 |
add_error ( err, ferr ) ;
|
|
|
1767 |
}
|
|
|
1768 |
}
|
|
|
1769 |
p = TAIL_list ( p ) ;
|
|
|
1770 |
}
|
|
|
1771 |
break ;
|
|
|
1772 |
}
|
|
|
1773 |
|
|
|
1774 |
case type_token_tag :
|
|
|
1775 |
token_lab : {
|
|
|
1776 |
/* Tokenised types */
|
|
|
1777 |
TYPE s = expand_type ( t, 0 ) ;
|
|
|
1778 |
if ( EQ_type ( s, t ) ) goto non_aggregate_lab ;
|
|
|
1779 |
e = init_aggr_aux ( s, cv, r, start, id, err ) ;
|
|
|
1780 |
return ( e ) ;
|
|
|
1781 |
}
|
|
|
1782 |
|
|
|
1783 |
case type_top_tag :
|
|
|
1784 |
case type_bottom_tag :
|
|
|
1785 |
incomplete_lab : {
|
|
|
1786 |
/* Incomplete types */
|
|
|
1787 |
add_error ( err, ERR_basic_types_incompl ( t ) ) ;
|
|
|
1788 |
add_error ( err, ERR_dcl_init_incompl () ) ;
|
|
|
1789 |
e = init_empty ( t, cv, 1, err ) ;
|
|
|
1790 |
break ;
|
|
|
1791 |
}
|
|
|
1792 |
|
|
|
1793 |
default :
|
|
|
1794 |
non_aggregate_lab : {
|
|
|
1795 |
/* Other types */
|
|
|
1796 |
if ( start ) {
|
|
|
1797 |
/* Can't have aggregate initialisers */
|
|
|
1798 |
ERROR ferr = ERR_dcl_init_decl ( id, NULL_string ) ;
|
|
|
1799 |
ferr = concat_error ( ferr, cerr ) ;
|
|
|
1800 |
ferr = concat_error ( ferr, ERR_dcl_init_aggr_type ( t ) ) ;
|
|
|
1801 |
report ( crt_loc, ferr ) ;
|
|
|
1802 |
if ( ci & cinfo_usr_constr ) {
|
|
|
1803 |
/* Map to constructor call */
|
|
|
1804 |
LIST ( EXP ) q = p ;
|
|
|
1805 |
while ( !IS_NULL_list ( q ) ) {
|
|
|
1806 |
unsigned et = null_tag ;
|
|
|
1807 |
IGNORE get_aggr_elem ( q, &et ) ;
|
|
|
1808 |
q = TAIL_list ( q ) ;
|
|
|
1809 |
}
|
|
|
1810 |
e = init_constr ( t, p, err ) ;
|
|
|
1811 |
return ( e ) ;
|
|
|
1812 |
}
|
|
|
1813 |
} else {
|
|
|
1814 |
if ( !IS_NULL_err ( cerr ) ) destroy_error ( cerr, 1 ) ;
|
|
|
1815 |
}
|
|
|
1816 |
if ( IS_NULL_list ( p ) ) {
|
|
|
1817 |
/* Empty initialiser list */
|
|
|
1818 |
e = init_empty ( t, cv, 1, err ) ;
|
|
|
1819 |
} else {
|
|
|
1820 |
/* Get next initialiser from list */
|
|
|
1821 |
unsigned et = null_tag ;
|
|
|
1822 |
e = get_aggr_elem ( p, &et ) ;
|
|
|
1823 |
if ( et == exp_aggregate_tag ) {
|
|
|
1824 |
LIST ( EXP ) q ;
|
|
|
1825 |
q = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1826 |
e = init_aggr_aux ( t, cv, &q, 1, id, err ) ;
|
|
|
1827 |
} else {
|
|
|
1828 |
e = convert_reference ( e, REF_ASSIGN ) ;
|
|
|
1829 |
if ( tag == type_token_tag && is_zero_exp ( e ) ) {
|
|
|
1830 |
/* Special concession to tokenised types */
|
|
|
1831 |
e = init_empty ( t, cv, 1, err ) ;
|
|
|
1832 |
} else {
|
|
|
1833 |
ERROR ferr = NULL_err ;
|
|
|
1834 |
e = init_assign ( t, cv, e, &ferr ) ;
|
|
|
1835 |
if ( !IS_NULL_err ( ferr ) ) {
|
|
|
1836 |
ferr = init_error ( ferr, 1 ) ;
|
|
|
1837 |
add_error ( err, ferr ) ;
|
|
|
1838 |
}
|
|
|
1839 |
}
|
|
|
1840 |
}
|
|
|
1841 |
p = TAIL_list ( p ) ;
|
|
|
1842 |
}
|
|
|
1843 |
break ;
|
|
|
1844 |
}
|
|
|
1845 |
}
|
|
|
1846 |
|
|
|
1847 |
/* Check for end of initialiser list */
|
|
|
1848 |
if ( start && !IS_NULL_list ( p ) ) {
|
|
|
1849 |
ERROR ferr = ERR_dcl_init_decl ( id, NULL_string ) ;
|
|
|
1850 |
ferr = concat_error ( ferr, ERR_dcl_init_aggr_excess ( t ) ) ;
|
|
|
1851 |
report ( crt_loc, ferr ) ;
|
|
|
1852 |
p = NULL_list ( EXP ) ;
|
|
|
1853 |
}
|
|
|
1854 |
*r = p ;
|
|
|
1855 |
return ( e ) ;
|
|
|
1856 |
}
|
|
|
1857 |
|
|
|
1858 |
|
|
|
1859 |
/*
|
|
|
1860 |
CHECK AN AGGREGATE INITIALISER
|
|
|
1861 |
|
|
|
1862 |
This is the top-level routine for analysing the aggregate initialiser
|
|
|
1863 |
e for the object id of type t. Any errors are added to err.
|
|
|
1864 |
*/
|
|
|
1865 |
|
|
|
1866 |
EXP init_aggregate
|
|
|
1867 |
PROTO_N ( ( t, e, id, err ) )
|
|
|
1868 |
PROTO_T ( TYPE t X EXP e X IDENTIFIER id X ERROR *err )
|
|
|
1869 |
{
|
|
|
1870 |
LOCATION loc ;
|
|
|
1871 |
LIST ( EXP ) args = DEREF_list ( exp_aggregate_args ( e ) ) ;
|
|
|
1872 |
if ( IS_NULL_list ( args ) ) {
|
|
|
1873 |
/* Report empty aggregate initialisers */
|
|
|
1874 |
add_error ( err, ERR_dcl_init_aggr_empty () ) ;
|
|
|
1875 |
}
|
|
|
1876 |
bad_crt_loc++ ;
|
|
|
1877 |
loc = crt_loc ;
|
|
|
1878 |
IGNORE clear_buffer ( &field_buff, NIL ( FILE ) ) ;
|
|
|
1879 |
e = init_aggr_aux ( t, cv_none, &args, 2, id, err ) ;
|
|
|
1880 |
crt_loc = loc ;
|
|
|
1881 |
bad_crt_loc-- ;
|
|
|
1882 |
return ( e ) ;
|
|
|
1883 |
}
|
|
|
1884 |
|
|
|
1885 |
|
|
|
1886 |
/*
|
|
|
1887 |
CHECK ANY INITIALISER
|
|
|
1888 |
|
|
|
1889 |
This routine calls init_assign, init_constr or init_aggregate depending
|
|
|
1890 |
on the value of e. If tentative is true then an absent initialiser
|
|
|
1891 |
(i.e. when e is null) is treated as a tentative definition.
|
|
|
1892 |
*/
|
|
|
1893 |
|
|
|
1894 |
EXP init_general
|
|
|
1895 |
PROTO_N ( ( t, e, id, tentative ) )
|
|
|
1896 |
PROTO_T ( TYPE t X EXP e X IDENTIFIER id X int tentative )
|
|
|
1897 |
{
|
|
|
1898 |
/* Check the initialiser */
|
|
|
1899 |
ERROR err = NULL_err ;
|
|
|
1900 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
1901 |
/* Empty initialisers */
|
|
|
1902 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1903 |
if ( ds & dspec_auto ) {
|
|
|
1904 |
e = init_empty ( t, cv_none, 0, &err ) ;
|
|
|
1905 |
} else if ( tentative ) {
|
|
|
1906 |
MAKE_exp_zero ( t, e ) ;
|
|
|
1907 |
} else {
|
|
|
1908 |
e = init_empty ( t, cv_none, 1, &err ) ;
|
|
|
1909 |
}
|
|
|
1910 |
} else {
|
|
|
1911 |
switch ( TAG_exp ( e ) ) {
|
|
|
1912 |
case exp_aggregate_tag : {
|
|
|
1913 |
/* Aggregate initialisers */
|
|
|
1914 |
if ( is_templ_type ( t ) ) {
|
|
|
1915 |
e = cast_templ_type ( t, e, CAST_IMPLICIT ) ;
|
|
|
1916 |
} else {
|
|
|
1917 |
e = init_aggregate ( t, e, id, &err ) ;
|
|
|
1918 |
}
|
|
|
1919 |
break ;
|
|
|
1920 |
}
|
|
|
1921 |
case exp_nof_tag : {
|
|
|
1922 |
/* Padded aggregate initialisers */
|
|
|
1923 |
e = DEREF_exp ( exp_nof_start ( e ) ) ;
|
|
|
1924 |
e = init_general ( t, e, id, 0 ) ;
|
|
|
1925 |
return ( e ) ;
|
|
|
1926 |
}
|
|
|
1927 |
case exp_initialiser_tag : {
|
|
|
1928 |
/* Function style initialisers */
|
|
|
1929 |
LIST ( EXP ) args ;
|
|
|
1930 |
args = DEREF_list ( exp_initialiser_args ( e ) ) ;
|
|
|
1931 |
args = convert_args ( args ) ;
|
|
|
1932 |
e = init_constr ( t, args, &err ) ;
|
|
|
1933 |
if ( !IS_NULL_err ( err ) ) err = init_error ( err, 1 ) ;
|
|
|
1934 |
break ;
|
|
|
1935 |
}
|
|
|
1936 |
default : {
|
|
|
1937 |
/* Simple initialisers */
|
|
|
1938 |
unsigned etag = TAG_exp ( e ) ;
|
|
|
1939 |
e = convert_reference ( e, REF_ASSIGN ) ;
|
|
|
1940 |
if ( etag == exp_paren_tag && IS_type_array ( t ) ) {
|
|
|
1941 |
e = make_paren_exp ( e ) ;
|
|
|
1942 |
}
|
|
|
1943 |
e = init_assign ( t, cv_none, e, &err ) ;
|
|
|
1944 |
if ( !IS_NULL_err ( err ) ) err = init_error ( err, 1 ) ;
|
|
|
1945 |
break ;
|
|
|
1946 |
}
|
|
|
1947 |
}
|
|
|
1948 |
}
|
|
|
1949 |
|
|
|
1950 |
/* Report any errors */
|
|
|
1951 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1952 |
ERROR ferr = ERR_dcl_init_decl ( id, NULL_string ) ;
|
|
|
1953 |
err = concat_error ( ferr, err ) ;
|
|
|
1954 |
report ( crt_loc, err ) ;
|
|
|
1955 |
}
|
|
|
1956 |
|
|
|
1957 |
/* Check for dynamic initialisers */
|
|
|
1958 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
1959 |
e = dynamic_init ( id, NULL_string, e ) ;
|
|
|
1960 |
}
|
|
|
1961 |
return ( e ) ;
|
|
|
1962 |
}
|
|
|
1963 |
|
|
|
1964 |
|
|
|
1965 |
/*
|
|
|
1966 |
DESTROY AN OBJECT
|
|
|
1967 |
|
|
|
1968 |
This routine creates a destructor for the object id of type t,
|
|
|
1969 |
reporting any errors.
|
|
|
1970 |
*/
|
|
|
1971 |
|
|
|
1972 |
EXP destroy_general
|
|
|
1973 |
PROTO_N ( ( t, id ) )
|
|
|
1974 |
PROTO_T ( TYPE t X IDENTIFIER id )
|
|
|
1975 |
{
|
|
|
1976 |
EXP d = NULL_exp ;
|
|
|
1977 |
int du = do_usage ;
|
|
|
1978 |
ERROR err = NULL_err ;
|
|
|
1979 |
do_usage = 0 ;
|
|
|
1980 |
d = init_default ( t, &d, DEFAULT_DESTR, EXTRA_DESTR, &err ) ;
|
|
|
1981 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1982 |
/* Report any destructor errors */
|
|
|
1983 |
ERROR ferr = ERR_dcl_init_decl ( id, NULL_string ) ;
|
|
|
1984 |
err = concat_error ( ferr, err ) ;
|
|
|
1985 |
report ( decl_loc, err ) ;
|
|
|
1986 |
}
|
|
|
1987 |
do_usage = du ;
|
|
|
1988 |
return ( d ) ;
|
|
|
1989 |
}
|
|
|
1990 |
|
|
|
1991 |
|
|
|
1992 |
/*
|
|
|
1993 |
INITIALISE AN OBJECT
|
|
|
1994 |
|
|
|
1995 |
This routine initialises the object given by id to the value e. Note
|
|
|
1996 |
that e can be the null expression, indicating that no initialiser is
|
|
|
1997 |
given. The routine 1 if the object is defined, 2 if it is tentatively
|
|
|
1998 |
defined, and 0 if it is just declared (see dump_declare).
|
|
|
1999 |
*/
|
|
|
2000 |
|
|
|
2001 |
int init_object
|
|
|
2002 |
PROTO_N ( ( id, e ) )
|
|
|
2003 |
PROTO_T ( IDENTIFIER id X EXP e )
|
|
|
2004 |
{
|
|
|
2005 |
EXP d ;
|
|
|
2006 |
TYPE t ;
|
|
|
2007 |
int def = 0 ;
|
|
|
2008 |
unsigned tag ;
|
|
|
2009 |
DECL_SPEC ds ;
|
|
|
2010 |
unsigned itag ;
|
|
|
2011 |
int ignore = 0 ;
|
|
|
2012 |
|
|
|
2013 |
/* Check for non-object declarations */
|
|
|
2014 |
if ( IS_NULL_id ( id ) ) return ( 0 ) ;
|
|
|
2015 |
itag = TAG_id ( id ) ;
|
|
|
2016 |
switch ( itag ) {
|
|
|
2017 |
|
|
|
2018 |
case id_variable_tag :
|
|
|
2019 |
case id_stat_member_tag : {
|
|
|
2020 |
/* Variables and static data members */
|
|
|
2021 |
break ;
|
|
|
2022 |
}
|
|
|
2023 |
|
|
|
2024 |
case id_parameter_tag : {
|
|
|
2025 |
/* Function parameters */
|
|
|
2026 |
if ( !in_default_arg ) {
|
|
|
2027 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2028 |
report ( crt_loc, ERR_dcl_fct_default_weak ( id ) ) ;
|
|
|
2029 |
}
|
|
|
2030 |
return ( 0 ) ;
|
|
|
2031 |
}
|
|
|
2032 |
break ;
|
|
|
2033 |
}
|
|
|
2034 |
|
|
|
2035 |
case id_function_tag :
|
|
|
2036 |
case id_mem_func_tag :
|
|
|
2037 |
case id_stat_mem_func_tag : {
|
|
|
2038 |
/* Check for function declarations */
|
|
|
2039 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2040 |
/* Can't initialise functions */
|
|
|
2041 |
report ( crt_loc, ERR_dcl_init_func ( id ) ) ;
|
|
|
2042 |
}
|
|
|
2043 |
|
|
|
2044 |
/* Check previous definition */
|
|
|
2045 |
d = DEREF_exp ( id_function_etc_defn ( id ) ) ;
|
|
|
2046 |
if ( !IS_NULL_exp ( d ) ) {
|
|
|
2047 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2048 |
ds |= dspec_defn ;
|
|
|
2049 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2050 |
}
|
|
|
2051 |
return ( 0 ) ;
|
|
|
2052 |
}
|
|
|
2053 |
|
|
|
2054 |
case id_member_tag : {
|
|
|
2055 |
/* Check for non-static members (shouldn't be reached) */
|
|
|
2056 |
report ( crt_loc, ERR_class_mem_init_mem ( id ) ) ;
|
|
|
2057 |
return ( 0 ) ;
|
|
|
2058 |
}
|
|
|
2059 |
|
|
|
2060 |
default : {
|
|
|
2061 |
/* The declaration could have been a typedef */
|
|
|
2062 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2063 |
/* Can't initialise a typedef */
|
|
|
2064 |
report ( crt_loc, ERR_dcl_init_typedef ( id ) ) ;
|
|
|
2065 |
}
|
|
|
2066 |
return ( 1 ) ;
|
|
|
2067 |
}
|
|
|
2068 |
}
|
|
|
2069 |
|
|
|
2070 |
/* Get declaration data */
|
|
|
2071 |
t = DEREF_type ( id_variable_etc_type ( id ) ) ;
|
|
|
2072 |
tag = TAG_type ( t ) ;
|
|
|
2073 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2074 |
temp_storage = ( ds & dspec_storage ) ;
|
|
|
2075 |
|
|
|
2076 |
/* Check array initialisers */
|
|
|
2077 |
if ( tag == type_array_tag ) {
|
|
|
2078 |
int chk = 0 ;
|
|
|
2079 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2080 |
/* Initialisation of array types */
|
|
|
2081 |
NAT n = DEREF_nat ( type_array_size ( t ) ) ;
|
|
|
2082 |
if ( ( ds & dspec_auto ) && itag == id_variable_tag ) {
|
|
|
2083 |
/* Local aggregate initialiser */
|
|
|
2084 |
report ( crt_loc, ERR_dcl_init_aggr_auto ( id ) ) ;
|
|
|
2085 |
}
|
|
|
2086 |
last_array_size = NULL_nat ;
|
|
|
2087 |
e = init_general ( t, e, id, 0 ) ;
|
|
|
2088 |
if ( IS_NULL_nat ( n ) ) {
|
|
|
2089 |
/* Complete unbounded arrays */
|
|
|
2090 |
n = last_array_size ;
|
|
|
2091 |
if ( !IS_NULL_nat ( n ) ) {
|
|
|
2092 |
CV_SPEC qual = DEREF_cv ( type_qual ( t ) ) ;
|
|
|
2093 |
TYPE s = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
2094 |
n = check_array_dim ( n ) ;
|
|
|
2095 |
MAKE_type_array ( qual, s, n, t ) ;
|
|
|
2096 |
COPY_type ( id_variable_etc_type ( id ), t ) ;
|
|
|
2097 |
}
|
|
|
2098 |
}
|
|
|
2099 |
ds |= dspec_defn ;
|
|
|
2100 |
chk = 1 ;
|
|
|
2101 |
} else {
|
|
|
2102 |
/* Allow for tentative definitions */
|
|
|
2103 |
if ( ds & dspec_defn ) chk = LANGUAGE_CPP ;
|
|
|
2104 |
}
|
|
|
2105 |
|
|
|
2106 |
/* Can only spot incomplete arrays at this stage */
|
|
|
2107 |
if ( chk ) {
|
|
|
2108 |
ERROR err = check_complete ( t ) ;
|
|
|
2109 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
2110 |
ERROR err2 = ERR_basic_types_def_incompl ( id ) ;
|
|
|
2111 |
err = concat_error ( err, err2 ) ;
|
|
|
2112 |
report ( decl_loc, err ) ;
|
|
|
2113 |
}
|
|
|
2114 |
}
|
|
|
2115 |
|
|
|
2116 |
} else {
|
|
|
2117 |
/* Other initialisers */
|
|
|
2118 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2119 |
if ( tag == type_compound_tag ) {
|
|
|
2120 |
if ( ( ds & dspec_auto ) && itag == id_variable_tag ) {
|
|
|
2121 |
/* Local aggregate initialiser */
|
|
|
2122 |
report ( crt_loc, ERR_dcl_init_aggr_auto ( id ) ) ;
|
|
|
2123 |
}
|
|
|
2124 |
}
|
|
|
2125 |
if ( ds & dspec_defn ) {
|
|
|
2126 |
/* Type already check for completeness */
|
|
|
2127 |
/* EMPTY */
|
|
|
2128 |
} else if ( tag == type_ref_tag ) {
|
|
|
2129 |
/* Reference types don't need checking */
|
|
|
2130 |
/* EMPTY */
|
|
|
2131 |
} else {
|
|
|
2132 |
/* Type not yet checked for completeness */
|
|
|
2133 |
ERROR err = check_complete ( t ) ;
|
|
|
2134 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
2135 |
ERROR err2 = ERR_basic_types_def_incompl ( id ) ;
|
|
|
2136 |
err = concat_error ( err, err2 ) ;
|
|
|
2137 |
report ( decl_loc, err ) ;
|
|
|
2138 |
}
|
|
|
2139 |
ds |= dspec_defn ;
|
|
|
2140 |
}
|
|
|
2141 |
|
|
|
2142 |
/* Examine initialiser */
|
|
|
2143 |
e = init_general ( t, e, id, 0 ) ;
|
|
|
2144 |
}
|
|
|
2145 |
}
|
|
|
2146 |
|
|
|
2147 |
/* Check on definition */
|
|
|
2148 |
if ( ds & dspec_stat_inline ) {
|
|
|
2149 |
/* Check for definitions of inline static members */
|
|
|
2150 |
if ( ds & dspec_defn ) {
|
|
|
2151 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2152 |
/* Can't give a value in the definition */
|
|
|
2153 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
2154 |
report ( decl_loc, ERR_class_static_data_def ( id, loc ) ) ;
|
|
|
2155 |
} else {
|
|
|
2156 |
/* Force definition to existing value */
|
|
|
2157 |
e = DEREF_exp ( id_variable_etc_init ( id ) ) ;
|
|
|
2158 |
}
|
|
|
2159 |
/* Mark as defined and no longer inline */
|
|
|
2160 |
ds &= ~dspec_stat_inline ;
|
|
|
2161 |
}
|
|
|
2162 |
|
|
|
2163 |
} else {
|
|
|
2164 |
/* Provide default definition if necessary */
|
|
|
2165 |
if ( ds & dspec_defn ) {
|
|
|
2166 |
def = 1 ;
|
|
|
2167 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
2168 |
e = init_general ( t, e, id, LANGUAGE_C ) ;
|
|
|
2169 |
if ( !IS_NULL_exp ( e ) && IS_exp_zero ( e ) ) def = 2 ;
|
|
|
2170 |
}
|
|
|
2171 |
}
|
|
|
2172 |
|
|
|
2173 |
/* Check previous definition */
|
|
|
2174 |
d = DEREF_exp ( id_variable_etc_init ( id ) ) ;
|
|
|
2175 |
if ( !IS_NULL_exp ( d ) ) {
|
|
|
2176 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2177 |
/* Defined twice */
|
|
|
2178 |
ERROR err ;
|
|
|
2179 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
2180 |
if ( def == 2 ) {
|
|
|
2181 |
/* This definition is tentative */
|
|
|
2182 |
err = ERR_basic_odr_tentative ( id, loc ) ;
|
|
|
2183 |
ignore = 1 ;
|
|
|
2184 |
} else if ( IS_exp_zero ( d ) ) {
|
|
|
2185 |
/* Previous definition was tentative */
|
|
|
2186 |
err = ERR_basic_odr_tentative ( id, loc ) ;
|
|
|
2187 |
} else {
|
|
|
2188 |
/* Neither definition is tentative */
|
|
|
2189 |
err = ERR_basic_odr_def ( id, loc ) ;
|
|
|
2190 |
}
|
|
|
2191 |
report ( decl_loc, err ) ;
|
|
|
2192 |
}
|
|
|
2193 |
ds |= dspec_defn ;
|
|
|
2194 |
}
|
|
|
2195 |
}
|
|
|
2196 |
|
|
|
2197 |
/* Update declaration data */
|
|
|
2198 |
COPY_type ( id_variable_etc_type ( id ), t ) ;
|
|
|
2199 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2200 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2201 |
/* Define object */
|
|
|
2202 |
if ( !ignore ) {
|
|
|
2203 |
if ( ( ds & dspec_auto ) && ( ds & dspec_used ) ) {
|
|
|
2204 |
/* Local variable initialised in terms of itself */
|
|
|
2205 |
TYPE s = DEREF_type ( exp_type ( e ) ) ;
|
|
|
2206 |
MAKE_exp_dynamic ( s, e, e ) ;
|
|
|
2207 |
}
|
|
|
2208 |
if ( itag != id_parameter_tag ) e = check_init ( e ) ;
|
|
|
2209 |
COPY_exp ( id_variable_etc_init ( id ), e ) ;
|
|
|
2210 |
COPY_loc ( id_loc ( id ), decl_loc ) ;
|
|
|
2211 |
define_id ( id ) ;
|
|
|
2212 |
}
|
|
|
2213 |
if ( ds & dspec_linkage ) {
|
|
|
2214 |
/* Check enclosing namespace */
|
|
|
2215 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
2216 |
check_decl_nspace ( id, ns, 1, crt_namespace ) ;
|
|
|
2217 |
}
|
|
|
2218 |
if ( def == 0 ) def = 1 ;
|
|
|
2219 |
}
|
|
|
2220 |
if ( def ) {
|
|
|
2221 |
/* Create destructor */
|
|
|
2222 |
EXP d1 = DEREF_exp ( id_variable_etc_term ( id ) ) ;
|
|
|
2223 |
d = destroy_general ( t, id ) ;
|
|
|
2224 |
if ( !IS_NULL_exp ( d1 ) && IS_exp_paren ( d1 ) ) {
|
|
|
2225 |
/* Preserve parenthesised type information */
|
|
|
2226 |
TYPE t1 = DEREF_type ( exp_type ( d1 ) ) ;
|
|
|
2227 |
MAKE_exp_paren ( t1, d, d ) ;
|
|
|
2228 |
}
|
|
|
2229 |
COPY_exp ( id_variable_etc_term ( id ), d ) ;
|
|
|
2230 |
}
|
|
|
2231 |
if ( !IS_NULL_id ( unify_id_pending ) ) {
|
|
|
2232 |
/* Deal with any pending identifiers */
|
|
|
2233 |
IGNORE unify_id ( unify_id_pending, id, 1 ) ;
|
|
|
2234 |
}
|
|
|
2235 |
temp_storage = dspec_auto ;
|
|
|
2236 |
if ( def && !( ds & dspec_auto ) ) {
|
|
|
2237 |
if ( !really_in_function_defn && !in_template_decl ) {
|
|
|
2238 |
/* Compile variable definition */
|
|
|
2239 |
compile_variable ( id, 0 ) ;
|
|
|
2240 |
}
|
|
|
2241 |
}
|
|
|
2242 |
return ( def ) ;
|
|
|
2243 |
}
|
|
|
2244 |
|
|
|
2245 |
|
|
|
2246 |
/*
|
|
|
2247 |
INITIALISE A FUNCTION PARAMETER
|
|
|
2248 |
|
|
|
2249 |
This routine initialises the function parameter id with the expression
|
|
|
2250 |
e (i.e. sets up a default argument value). Note that the class
|
|
|
2251 |
definition case, where e is initially just skipped over, is dealt
|
|
|
2252 |
with here.
|
|
|
2253 |
*/
|
|
|
2254 |
|
|
|
2255 |
void init_param
|
|
|
2256 |
PROTO_N ( ( id, e ) )
|
|
|
2257 |
PROTO_T ( IDENTIFIER id X EXP e )
|
|
|
2258 |
{
|
|
|
2259 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2260 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
2261 |
if ( IS_id_token ( id ) ) {
|
|
|
2262 |
/* Template parameter */
|
|
|
2263 |
init_exp_param ( id, e ) ;
|
|
|
2264 |
} else {
|
|
|
2265 |
/* Function parameter */
|
|
|
2266 |
if ( IS_exp_uncompiled ( e ) ) {
|
|
|
2267 |
if ( in_class_defn ) {
|
|
|
2268 |
LIST ( IDENTIFIER ) ft ;
|
|
|
2269 |
CLASS_TYPE ct = crt_class ;
|
|
|
2270 |
ft = DEREF_list ( ctype_nest ( ct ) ) ;
|
|
|
2271 |
CONS_id ( id, ft, ft ) ;
|
|
|
2272 |
COPY_list ( ctype_nest ( ct ), ft ) ;
|
|
|
2273 |
}
|
|
|
2274 |
COPY_exp ( id_parameter_init ( id ), e ) ;
|
|
|
2275 |
} else {
|
|
|
2276 |
in_default_arg++ ;
|
|
|
2277 |
IGNORE init_object ( id, e ) ;
|
|
|
2278 |
in_default_arg-- ;
|
|
|
2279 |
}
|
|
|
2280 |
}
|
|
|
2281 |
}
|
|
|
2282 |
}
|
|
|
2283 |
return ;
|
|
|
2284 |
}
|
|
|
2285 |
|
|
|
2286 |
|
|
|
2287 |
/*
|
|
|
2288 |
INITIALISE A CLASS MEMBER
|
|
|
2289 |
|
|
|
2290 |
This routine initialises the class member id with the expression e
|
|
|
2291 |
(which since it is a constant-expression has already undergone the
|
|
|
2292 |
appropriate operand conversions). Note that the pure specifier is
|
|
|
2293 |
indistinguishible syntactically from a member initialiser, and so is
|
|
|
2294 |
only spotted at this stage. See above for inline definitions of static
|
|
|
2295 |
data members. The routine returns 1 for a definition and 0 for a
|
|
|
2296 |
declaration (see dump_declare).
|
|
|
2297 |
*/
|
|
|
2298 |
|
|
|
2299 |
int init_member
|
|
|
2300 |
PROTO_N ( ( id, e ) )
|
|
|
2301 |
PROTO_T ( IDENTIFIER id X EXP e )
|
|
|
2302 |
{
|
|
|
2303 |
int def ;
|
|
|
2304 |
unsigned tag ;
|
|
|
2305 |
|
|
|
2306 |
/* Check for definitions */
|
|
|
2307 |
if ( IS_NULL_id ( id ) ) return ( 0 ) ;
|
|
|
2308 |
tag = TAG_id ( id ) ;
|
|
|
2309 |
if ( have_access_decl ) {
|
|
|
2310 |
def = 2 ;
|
|
|
2311 |
have_access_decl = 0 ;
|
|
|
2312 |
} else {
|
|
|
2313 |
switch ( tag ) {
|
|
|
2314 |
case id_stat_member_tag :
|
|
|
2315 |
case id_mem_func_tag :
|
|
|
2316 |
case id_stat_mem_func_tag : {
|
|
|
2317 |
def = 0 ;
|
|
|
2318 |
break ;
|
|
|
2319 |
}
|
|
|
2320 |
default : {
|
|
|
2321 |
def = 1 ;
|
|
|
2322 |
break ;
|
|
|
2323 |
}
|
|
|
2324 |
}
|
|
|
2325 |
}
|
|
|
2326 |
|
|
|
2327 |
/* Check for function declarations */
|
|
|
2328 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
2329 |
if ( tag == id_mem_func_tag || tag == id_stat_mem_func_tag ) {
|
|
|
2330 |
if ( really_in_function_defn ) {
|
|
|
2331 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
2332 |
if ( EQ_nspace ( ns, crt_namespace ) ) {
|
|
|
2333 |
DECL_SPEC ds, mds ;
|
|
|
2334 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2335 |
mds = ( dspec_inherit | dspec_implicit | dspec_defn ) ;
|
|
|
2336 |
if ( !( ds & mds ) ) {
|
|
|
2337 |
/* Local functions should be defined */
|
|
|
2338 |
report ( decl_loc, ERR_class_local_func ( id ) ) ;
|
|
|
2339 |
}
|
|
|
2340 |
}
|
|
|
2341 |
}
|
|
|
2342 |
}
|
|
|
2343 |
return ( def ) ;
|
|
|
2344 |
}
|
|
|
2345 |
|
|
|
2346 |
/* Check the various types of member */
|
|
|
2347 |
switch ( tag ) {
|
|
|
2348 |
|
|
|
2349 |
case id_stat_member_tag : {
|
|
|
2350 |
/* Static data members may be initialised */
|
|
|
2351 |
DECL_SPEC ds ;
|
|
|
2352 |
TYPE t = DEREF_type ( id_stat_member_type ( id ) ) ;
|
|
|
2353 |
CV_SPEC cv = find_cv_qual ( t ) ;
|
|
|
2354 |
switch ( TAG_type ( t ) ) {
|
|
|
2355 |
case type_integer_tag :
|
|
|
2356 |
case type_enumerate_tag : {
|
|
|
2357 |
ERROR err = NULL_err ;
|
|
|
2358 |
IGNORE make_nat_exp ( e, &err ) ;
|
|
|
2359 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
2360 |
/* Initialiser should be a constant expression */
|
|
|
2361 |
ERROR err2 = ERR_class_mem_init_const () ;
|
|
|
2362 |
err = concat_error ( err, err2 ) ;
|
|
|
2363 |
report ( crt_loc, err ) ;
|
|
|
2364 |
}
|
|
|
2365 |
break ;
|
|
|
2366 |
}
|
|
|
2367 |
case type_token_tag : {
|
|
|
2368 |
if ( !is_templ_type ( t ) ) goto default_lab ;
|
|
|
2369 |
break ;
|
|
|
2370 |
}
|
|
|
2371 |
default :
|
|
|
2372 |
default_lab : {
|
|
|
2373 |
/* Only integral types allowed */
|
|
|
2374 |
report ( crt_loc, ERR_class_static_data_init ( id, t ) ) ;
|
|
|
2375 |
break ;
|
|
|
2376 |
}
|
|
|
2377 |
}
|
|
|
2378 |
if ( cv != ( cv_const | cv_lvalue ) ) {
|
|
|
2379 |
/* Only const types allowed */
|
|
|
2380 |
report ( crt_loc, ERR_class_static_data_const ( id, t ) ) ;
|
|
|
2381 |
}
|
|
|
2382 |
e = init_general ( t, e, id, 0 ) ;
|
|
|
2383 |
e = dynamic_init ( id, NULL_string, e ) ;
|
|
|
2384 |
e = check_init ( e ) ;
|
|
|
2385 |
COPY_exp ( id_stat_member_init ( id ), e ) ;
|
|
|
2386 |
|
|
|
2387 |
/* Mark inline member definition */
|
|
|
2388 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2389 |
ds |= dspec_stat_inline ;
|
|
|
2390 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2391 |
break ;
|
|
|
2392 |
}
|
|
|
2393 |
|
|
|
2394 |
case id_mem_func_tag :
|
|
|
2395 |
case id_stat_mem_func_tag : {
|
|
|
2396 |
/* Check for pure specifiers */
|
|
|
2397 |
if ( is_zero_exp ( e ) ) {
|
|
|
2398 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2399 |
if ( ds & dspec_virtual ) {
|
|
|
2400 |
CLASS_TYPE ct = crt_class ;
|
|
|
2401 |
CLASS_INFO ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
2402 |
|
|
|
2403 |
/* Pure specifier should be precisely '0' */
|
|
|
2404 |
int tok = last_lex_token ;
|
|
|
2405 |
if ( tok != lex_integer_Hexp || is_literal ( e ) != 2 ) {
|
|
|
2406 |
report ( crt_loc, ERR_class_abstract_zero () ) ;
|
|
|
2407 |
}
|
|
|
2408 |
|
|
|
2409 |
/* Mark class as abstract */
|
|
|
2410 |
ci |= cinfo_abstract ;
|
|
|
2411 |
COPY_cinfo ( ctype_info ( ct ), ci ) ;
|
|
|
2412 |
|
|
|
2413 |
/* Mark function as pure */
|
|
|
2414 |
ds |= dspec_pure ;
|
|
|
2415 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2416 |
} else {
|
|
|
2417 |
/* Only virtual functions can be pure */
|
|
|
2418 |
report ( crt_loc, ERR_class_abstract_virt () ) ;
|
|
|
2419 |
}
|
|
|
2420 |
} else {
|
|
|
2421 |
/* Can't initialise functions otherwise */
|
|
|
2422 |
report ( crt_loc, ERR_dcl_init_func ( id ) ) ;
|
|
|
2423 |
}
|
|
|
2424 |
break ;
|
|
|
2425 |
}
|
|
|
2426 |
|
|
|
2427 |
case id_member_tag : {
|
|
|
2428 |
/* Can't initialise non-static members */
|
|
|
2429 |
report ( crt_loc, ERR_class_mem_init_mem ( id ) ) ;
|
|
|
2430 |
break ;
|
|
|
2431 |
}
|
|
|
2432 |
|
|
|
2433 |
default : {
|
|
|
2434 |
/* Can't initialise a typedef */
|
|
|
2435 |
report ( crt_loc, ERR_dcl_init_typedef ( id ) ) ;
|
|
|
2436 |
break ;
|
|
|
2437 |
}
|
|
|
2438 |
}
|
|
|
2439 |
return ( def ) ;
|
|
|
2440 |
}
|
|
|
2441 |
|
|
|
2442 |
|
|
|
2443 |
/*
|
|
|
2444 |
ALLOW A TOKEN AS AN INITIALISER
|
|
|
2445 |
|
|
|
2446 |
This routine enables the token id as an initialiser.
|
|
|
2447 |
*/
|
|
|
2448 |
|
|
|
2449 |
void allow_initialiser
|
|
|
2450 |
PROTO_N ( ( id ) )
|
|
|
2451 |
PROTO_T ( IDENTIFIER id )
|
|
|
2452 |
{
|
|
|
2453 |
id = find_token ( id ) ;
|
|
|
2454 |
if ( IS_id_token ( id ) ) {
|
|
|
2455 |
/* NOT YET IMPLEMENTED */
|
|
|
2456 |
/* EMPTY */
|
|
|
2457 |
} else {
|
|
|
2458 |
report ( crt_loc, ERR_token_undecl ( id ) ) ;
|
|
|
2459 |
}
|
|
|
2460 |
return ;
|
|
|
2461 |
}
|
|
|
2462 |
|
|
|
2463 |
|
|
|
2464 |
/*
|
|
|
2465 |
INITIALISE THE FIELD BUFFER
|
|
|
2466 |
|
|
|
2467 |
This routine initialises the field buffer.
|
|
|
2468 |
*/
|
|
|
2469 |
|
|
|
2470 |
void init_initialise
|
|
|
2471 |
PROTO_Z ()
|
|
|
2472 |
{
|
|
|
2473 |
field_buff.posn = extend_buffer ( &field_buff, field_buff.posn ) ;
|
|
|
2474 |
return ;
|
|
|
2475 |
}
|