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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 "exp_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 "inst_ops.h"
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#include "member_ops.h"
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#include "nspace_ops.h"
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#include "tok_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 "allocate.h"
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#include "basetype.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 "construct.h"
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#include "copy.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 "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 "instance.h"
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#include "namespace.h"
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#include "operator.h"
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#include "overload.h"
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#include "predict.h"
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#include "redeclare.h"
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#include "template.h"
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#include "tokdef.h"
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#include "token.h"
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static void copy_template PROTO_S ( ( IDENTIFIER, int ) ) ;
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/*
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LIST OF ALL TEMPLATE INSTANCES
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All template instances are formed into a linked list by their prev
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field (most recent first).
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*/
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INSTANCE all_instances = NULL_inst ;
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/*
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JOIN TWO LISTS OF TEMPLATE ARGUMENTS
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This routine copies the template arguments p to the start of the list q.
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*/
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static LIST ( TOKEN ) add_template_args
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PROTO_N ( ( p, q ) )
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PROTO_T ( LIST ( TOKEN ) p X LIST ( TOKEN ) q )
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{
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if ( !IS_NULL_list ( p ) ) {
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TOKEN tok = DEREF_tok ( HEAD_list ( p ) ) ;
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tok = expand_sort ( tok, -1, 1 ) ;
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p = TAIL_list ( p ) ;
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q = add_template_args ( p, q ) ;
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CONS_tok ( tok, q, q ) ;
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}
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return ( q ) ;
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}
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/*
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CREATE A PARTIAL FUNCTION INSTANCE
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This routine is a special case of instance_func which allows for the
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case where some of the template arguments are given explicitly and
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others are deduced. id gives the template with any explicit arguments
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already bound, and args gives the implicitly deduced arguments which
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are bound to the parameters pids.
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*/
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static IDENTIFIER inst_func_deduce
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PROTO_N ( ( id, pids, args, d ) )
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PROTO_T ( IDENTIFIER id X LIST ( IDENTIFIER ) pids X
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LIST ( TOKEN ) args X int d )
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{
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IDENTIFIER fid = DEREF_id ( id_alias ( id ) ) ;
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TYPE form = DEREF_type ( id_function_etc_form ( fid ) ) ;
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if ( !IS_NULL_type ( form ) && IS_type_token ( form ) ) {
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LIST ( TOKEN ) dargs ;
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fid = DEREF_id ( type_token_tok ( form ) ) ;
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dargs = DEREF_list ( type_token_args ( form ) ) ;
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if ( !IS_NULL_list ( dargs ) ) {
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/* Partially specified template */
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TYPE s = DEREF_type ( id_function_etc_type ( fid ) ) ;
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TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
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restore_token_args ( pids, d ) ;
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args = add_template_args ( dargs, args ) ;
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pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
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d = save_token_args ( pids, args ) ;
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fid = inst_func_deduce ( fid, pids, args, d ) ;
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return ( fid ) ;
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}
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}
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fid = instance_func ( fid, args, 1, 0 ) ;
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restore_token_args ( pids, d ) ;
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return ( fid ) ;
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}
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/*
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DEDUCE A BASE CLASS
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This routine returns a list of all the base classes of gr which can
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be deduced to be equal to the class ct.
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*/
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static LIST ( GRAPH ) deduce_graph
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PROTO_N ( ( gr, ct, pids ) )
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PROTO_T ( GRAPH gr X CLASS_TYPE ct X LIST ( IDENTIFIER ) pids )
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{
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LIST ( GRAPH ) pr = NULL_list ( GRAPH ) ;
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CLASS_TYPE cr = DEREF_ctype ( graph_head ( gr ) ) ;
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DECL_SPEC acc = DEREF_dspec ( graph_access ( gr ) ) ;
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/* Check for equality */
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int d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
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if ( eq_ctype ( cr, ct ) ) CONS_graph ( gr, pr, pr ) ;
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restore_token_args ( pids, d ) ;
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/* Examine base classes */
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if ( acc & dspec_main ) {
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LIST ( GRAPH ) br = DEREF_list ( graph_tails ( gr ) ) ;
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while ( !IS_NULL_list ( br ) ) {
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GRAPH gs = DEREF_graph ( HEAD_list ( br ) ) ;
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LIST ( GRAPH ) ps = deduce_graph ( gs, ct, pids ) ;
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while ( !IS_NULL_list ( ps ) ) {
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/* Add deduced graphs to list */
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LIST ( GRAPH ) pt = pr ;
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DESTROY_CONS_graph ( destroy, gs, ps, ps ) ;
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while ( !IS_NULL_list ( pt ) ) {
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/* Search for previous deductions */
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GRAPH gt = DEREF_graph ( HEAD_list ( pt ) ) ;
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if ( eq_graph ( gt, gs ) ) break ;
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pt = TAIL_list ( pt ) ;
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}
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if ( IS_NULL_list ( pt ) ) {
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/* Not previously deduced */
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CONS_graph ( gs, pr, pr ) ;
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}
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}
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br = TAIL_list ( br ) ;
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}
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}
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return ( pr ) ;
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}
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/*
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DEDUCE A DERIVED FUNCTION TEMPLATE PARAMETER TYPE
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This routine attempts to deduce the function template parameter type t
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from the corresponding function argument type s in the case where both
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are classes. s can be deduced to be a derived class of a template class
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rather than having to be equal to t.
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*/
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static int deduce_derive
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PROTO_N ( ( t, s, pids ) )
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PROTO_T ( TYPE t X TYPE s X LIST ( IDENTIFIER ) pids )
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{
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CLASS_TYPE cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
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CLASS_INFO ci = DEREF_cinfo ( ctype_info ( cs ) ) ;
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if ( ci & cinfo_templ_base ) {
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/* Only check if s has a template base class */
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CLASS_TYPE ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
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GRAPH gs = DEREF_graph ( ctype_base ( cs ) ) ;
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LIST ( GRAPH ) ps = deduce_graph ( gs, ct, pids ) ;
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if ( !IS_NULL_list ( ps ) ) {
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/* Deduction succeeded */
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DESTROY_CONS_graph ( destroy, gs, ps, ps ) ;
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if ( IS_NULL_list ( ps ) ) {
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/* Unambiguous deduction */
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TYPE fs ;
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cs = DEREF_ctype ( graph_head ( gs ) ) ;
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fs = DEREF_type ( ctype_form ( cs ) ) ;
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if ( !IS_NULL_type ( fs ) && IS_type_token ( fs ) ) {
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IDENTIFIER fid = DEREF_id ( type_token_tok ( fs ) ) ;
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if ( !IS_id_token ( fid ) ) {
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/* cs is a template class */
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return ( eq_ctype ( ct, cs ) ) ;
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}
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}
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return ( 0 ) ;
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}
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DESTROY_list ( ps, SIZE_graph ) ;
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}
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}
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return ( 0 ) ;
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}
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/*
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DEDUCE A FUNCTION TEMPLATE PARAMETER TYPE
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This routine attempts to deduce the function template parameter type t
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from the corresponding function argument type s. Qualification
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conversions and other inexact type conversions are allowed. The
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routine returns true if the deduction was successful.
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*/
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static int deduce_param
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PROTO_N ( ( t, s, pids ) )
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PROTO_T ( TYPE t X TYPE s X LIST ( IDENTIFIER ) pids )
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{
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int go = 1 ;
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int depth = 0 ;
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int all_const = 1 ;
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do {
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unsigned nt = TAG_type ( t ) ;
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unsigned ns = TAG_type ( s ) ;
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CV_SPEC qt = find_cv_qual ( t ) ;
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CV_SPEC qs = find_cv_qual ( s ) ;
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qt &= cv_qual ;
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qs &= cv_qual ;
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if ( qt != qs ) {
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/* Allow for qualification conversions */
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if ( ( qs & ~qt ) || !all_const ) {
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return ( eq_type ( t, s ) ) ;
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}
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}
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if ( depth && !( qt & cv_const ) ) all_const = 0 ;
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if ( nt == ns ) {
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switch ( nt ) {
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case type_ptr_tag :
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case type_ref_tag : {
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/* Continue checking pointer types */
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t = DEREF_type ( type_ptr_etc_sub ( t ) ) ;
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s = DEREF_type ( type_ptr_etc_sub ( s ) ) ;
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depth++ ;
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break ;
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}
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case type_ptr_mem_tag : {
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/* Continue checking pointer to member types */
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CLASS_TYPE ct = DEREF_ctype ( type_ptr_mem_of ( t ) ) ;
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CLASS_TYPE cs = DEREF_ctype ( type_ptr_mem_of ( s ) ) ;
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if ( !eq_ctype ( ct, cs ) ) return ( 0 ) ;
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t = DEREF_type ( type_ptr_mem_sub ( t ) ) ;
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s = DEREF_type ( type_ptr_mem_sub ( s ) ) ;
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depth += 2 ;
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break ;
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}
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case type_compound_tag : {
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/* Allow derived template classes */
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if ( depth < 2 && deduce_derive ( t, s, pids ) ) {
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return ( 1 ) ;
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}
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go = 0 ;
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break ;
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}
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default : {
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/* Now check for equality */
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go = 0 ;
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break ;
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}
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}
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} else {
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/* Now check for equality */
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go = 0 ;
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}
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} while ( go ) ;
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return ( eq_type_unqual ( t, s ) ) ;
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}
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/*
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PERFORM ARGUMENT DEDUCTION FOR A FUNCTION TEMPLATE
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This routine performs argument deduction for the call of the function
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template id with the arguments args. Qualification conversions and
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other inexact deductions are allowed if qual is true. The null
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identifier is returned to indicate that argument deduction fails.
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The instance corresponding to the deduced arguments is only created
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and returned if create is true. If force is true then type deduction
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continues after a failure has occurred.
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*/
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IDENTIFIER deduce_args
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PROTO_N ( ( id, args, qual, force, create, err ) )
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PROTO_T ( IDENTIFIER id X LIST ( EXP ) args X int qual X int force X
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int create X ERROR *err )
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{
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IDENTIFIER rid = NULL_id ;
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TYPE s = DEREF_type ( id_function_etc_type ( id ) ) ;
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TYPE r = DEREF_type ( type_templ_defn ( s ) ) ;
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if ( IS_type_func ( r ) ) {
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int d ;
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int ok = 2 ;
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int started = 0 ;
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ERROR err2 = NULL_err ;
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TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
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LIST ( TYPE ) pars = DEREF_list ( type_func_mtypes ( r ) ) ;
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LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
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if ( err == KILL_err ) err = &err2 ;
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force_template++ ;
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d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
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/* Scan through arguments */
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while ( !IS_NULL_list ( pars ) && !IS_NULL_list ( args ) ) {
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int dep = 1 ;
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344 |
TYPE p = DEREF_type ( HEAD_list ( pars ) ) ;
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EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
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346 |
if ( qual ) dep = depends_on ( p, pids ) ;
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|
347 |
if ( !IS_NULL_exp ( a ) && dep ) {
|
|
|
348 |
int eq ;
|
|
|
349 |
TYPE q ;
|
|
|
350 |
int d2 = 0 ;
|
|
|
351 |
ERROR ferr = NULL_err ;
|
|
|
352 |
if ( started ) {
|
|
|
353 |
/* Each argument deduction is independent */
|
|
|
354 |
d2 = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
|
|
|
355 |
}
|
|
|
356 |
if ( IS_type_ref ( p ) ) {
|
|
|
357 |
/* Use referenced type for type deduction */
|
|
|
358 |
p = DEREF_type ( type_ref_sub ( p ) ) ;
|
|
|
359 |
a = resolve_cast ( p, a, &ferr, 0, 0, pids ) ;
|
|
|
360 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
361 |
q = redef_type ;
|
|
|
362 |
} else {
|
|
|
363 |
q = DEREF_type ( exp_type ( a ) ) ;
|
|
|
364 |
}
|
|
|
365 |
} else {
|
|
|
366 |
/* Convert argument type */
|
|
|
367 |
a = resolve_cast ( p, a, &ferr, 0, 0, pids ) ;
|
|
|
368 |
if ( IS_NULL_exp ( a ) ) {
|
|
|
369 |
q = redef_type ;
|
|
|
370 |
} else {
|
|
|
371 |
q = DEREF_type ( exp_type ( a ) ) ;
|
|
|
372 |
switch ( TAG_type ( q ) ) {
|
|
|
373 |
case type_func_tag : {
|
|
|
374 |
/* Function to pointer */
|
|
|
375 |
MAKE_type_ptr ( cv_none, q, q ) ;
|
|
|
376 |
break ;
|
|
|
377 |
}
|
|
|
378 |
case type_array_tag : {
|
|
|
379 |
/* Array to pointer */
|
|
|
380 |
q = DEREF_type ( type_array_sub ( q ) ) ;
|
|
|
381 |
MAKE_type_ptr ( cv_none, q, q ) ;
|
|
|
382 |
break ;
|
|
|
383 |
}
|
|
|
384 |
case type_bitfield_tag : {
|
|
|
385 |
/* Promote bitfields */
|
|
|
386 |
q = promote_type ( q ) ;
|
|
|
387 |
break ;
|
|
|
388 |
}
|
|
|
389 |
default : {
|
|
|
390 |
/* Ignore type qualifiers */
|
|
|
391 |
q = qualify_type ( q, cv_none, 0 ) ;
|
|
|
392 |
break ;
|
|
|
393 |
}
|
|
|
394 |
}
|
|
|
395 |
}
|
|
|
396 |
}
|
|
|
397 |
if ( qual ) {
|
|
|
398 |
/* Allow qualification conversions */
|
|
|
399 |
eq = deduce_param ( p, q, pids ) ;
|
|
|
400 |
} else {
|
|
|
401 |
/* Require exact conversion */
|
|
|
402 |
eq = eq_type ( p, q ) ;
|
|
|
403 |
}
|
|
|
404 |
if ( !eq ) {
|
|
|
405 |
/* Type deduction should be identical */
|
|
|
406 |
ok = force ;
|
|
|
407 |
}
|
|
|
408 |
if ( started ) {
|
|
|
409 |
/* Combine argument deductions */
|
|
|
410 |
if ( !merge_token_args ( pids, d2, qual ) ) ok = force ;
|
|
|
411 |
}
|
|
|
412 |
started = 1 ;
|
|
|
413 |
if ( !ok ) break ;
|
|
|
414 |
}
|
|
|
415 |
args = TAIL_list ( args ) ;
|
|
|
416 |
pars = TAIL_list ( pars ) ;
|
|
|
417 |
}
|
|
|
418 |
|
|
|
419 |
/* Check the combined results */
|
|
|
420 |
if ( ok ) {
|
|
|
421 |
LIST ( TOKEN ) targs = make_token_args ( id, pids, err ) ;
|
|
|
422 |
if ( ok != 2 ) {
|
|
|
423 |
/* Report unviable resolution */
|
|
|
424 |
add_error ( err, ERR_over_match_viable_none ( id ) ) ;
|
|
|
425 |
}
|
|
|
426 |
if ( IS_NULL_err ( *err ) || force ) {
|
|
|
427 |
/* Successful deduction */
|
|
|
428 |
if ( create ) {
|
|
|
429 |
check_deduced_args ( id, pids, targs ) ;
|
|
|
430 |
rid = inst_func_deduce ( id, pids, targs, d ) ;
|
|
|
431 |
force_template-- ;
|
|
|
432 |
return ( rid ) ;
|
|
|
433 |
}
|
|
|
434 |
rid = id ;
|
|
|
435 |
}
|
|
|
436 |
DESTROY_list ( targs, SIZE_tok ) ;
|
|
|
437 |
}
|
|
|
438 |
restore_token_args ( pids, d ) ;
|
|
|
439 |
force_template-- ;
|
|
|
440 |
}
|
|
|
441 |
UNUSED ( qual ) ;
|
|
|
442 |
return ( rid ) ;
|
|
|
443 |
}
|
|
|
444 |
|
|
|
445 |
|
|
|
446 |
/*
|
|
|
447 |
SPECIALISE A FUNCTION TEMPLATE TO A FUNCTION TYPE
|
|
|
448 |
|
|
|
449 |
This routine constructs checks whether an instance of the function
|
|
|
450 |
template id of type t exists. The null identifier is returned to
|
|
|
451 |
indicate that no such instance exists. peq is as in resolve_func.
|
|
|
452 |
*/
|
|
|
453 |
|
|
|
454 |
IDENTIFIER deduce_func
|
|
|
455 |
PROTO_N ( ( id, t, peq ) )
|
|
|
456 |
PROTO_T ( IDENTIFIER id X TYPE t X int *peq )
|
|
|
457 |
{
|
|
|
458 |
TYPE s = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
459 |
if ( IS_type_templ ( s ) ) {
|
|
|
460 |
/* Template function */
|
|
|
461 |
int d ;
|
|
|
462 |
int eq = 0 ;
|
|
|
463 |
TYPE r = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
464 |
TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
465 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
466 |
force_template++ ;
|
|
|
467 |
d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
|
|
|
468 |
if ( IS_type_func ( r ) && IS_type_func ( t ) ) {
|
|
|
469 |
eq = eq_func_type ( r, t, 1, 0 ) ;
|
|
|
470 |
} else {
|
|
|
471 |
int cmp = eq_type ( r, t ) ;
|
|
|
472 |
if ( cmp == 1 || cmp == 2 ) eq = 3 ;
|
|
|
473 |
}
|
|
|
474 |
if ( eq >= 2 ) {
|
|
|
475 |
/* Types match - form instance */
|
|
|
476 |
ERROR err = NULL_err ;
|
|
|
477 |
LIST ( TOKEN ) args = make_token_args ( id, pids, &err ) ;
|
|
|
478 |
if ( IS_NULL_err ( err ) ) {
|
|
|
479 |
/* Successful deduction */
|
|
|
480 |
IDENTIFIER rid ;
|
|
|
481 |
check_deduced_args ( id, pids, args ) ;
|
|
|
482 |
rid = inst_func_deduce ( id, pids, args, d ) ;
|
|
|
483 |
force_template-- ;
|
|
|
484 |
*peq = eq ;
|
|
|
485 |
return ( rid ) ;
|
|
|
486 |
}
|
|
|
487 |
destroy_error ( err, 1 ) ;
|
|
|
488 |
}
|
|
|
489 |
restore_token_args ( pids, d ) ;
|
|
|
490 |
force_template-- ;
|
|
|
491 |
} else {
|
|
|
492 |
/* Simple function */
|
|
|
493 |
int eq = eq_func_type ( s, t, 1, 0 ) ;
|
|
|
494 |
if ( eq >= 2 ) {
|
|
|
495 |
*peq = eq ;
|
|
|
496 |
return ( id ) ;
|
|
|
497 |
}
|
|
|
498 |
}
|
|
|
499 |
*peq = 0 ;
|
|
|
500 |
return ( NULL_id ) ;
|
|
|
501 |
}
|
|
|
502 |
|
|
|
503 |
|
|
|
504 |
/*
|
|
|
505 |
DEDUCE A CONVERSION FUNCTION TYPE
|
|
|
506 |
|
|
|
507 |
This routine is used to find the type of the specialisation of a
|
|
|
508 |
template conversion function of type t which may be used for a
|
|
|
509 |
conversion to type r. If no such specialisation exists the null
|
|
|
510 |
type is returned.
|
|
|
511 |
*/
|
|
|
512 |
|
|
|
513 |
TYPE deduce_conv
|
|
|
514 |
PROTO_N ( ( t, r ) )
|
|
|
515 |
PROTO_T ( TYPE t X TYPE r )
|
|
|
516 |
{
|
|
|
517 |
if ( IS_type_templ ( t ) ) {
|
|
|
518 |
int d ;
|
|
|
519 |
TOKEN sort = DEREF_tok ( type_templ_sort ( t ) ) ;
|
|
|
520 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
521 |
force_template++ ;
|
|
|
522 |
d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
|
|
|
523 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
524 |
t = deduce_conv ( t, r ) ;
|
|
|
525 |
restore_token_args ( pids, d ) ;
|
|
|
526 |
force_template-- ;
|
|
|
527 |
} else {
|
|
|
528 |
int eq ;
|
|
|
529 |
CV_SPEC cv ;
|
|
|
530 |
TYPE s = DEREF_type ( type_func_ret ( t ) ) ;
|
|
|
531 |
if ( IS_type_ref ( s ) && !IS_type_ref ( r ) ) {
|
|
|
532 |
s = DEREF_type ( type_ref_sub ( s ) ) ;
|
|
|
533 |
}
|
|
|
534 |
cv = DEREF_cv ( type_qual ( r ) ) ;
|
|
|
535 |
s = qualify_type ( s, cv, 0 ) ;
|
|
|
536 |
eq = eq_type ( s, r ) ;
|
|
|
537 |
if ( eq == 1 || eq == 2 ) {
|
|
|
538 |
/* Match found */
|
|
|
539 |
t = expand_type ( t, 2 ) ;
|
|
|
540 |
} else {
|
|
|
541 |
/* No match found */
|
|
|
542 |
t = NULL_type ;
|
|
|
543 |
}
|
|
|
544 |
}
|
|
|
545 |
return ( t ) ;
|
|
|
546 |
}
|
|
|
547 |
|
|
|
548 |
|
|
|
549 |
/*
|
|
|
550 |
FIND AN UNDERLYING TEMPLATE
|
|
|
551 |
|
|
|
552 |
This routine finds the underlying form for the template application id.
|
|
|
553 |
If this is an undefined class then pi is set to true.
|
|
|
554 |
*/
|
|
|
555 |
|
|
|
556 |
TYPE find_form
|
|
|
557 |
PROTO_N ( ( id, pi ) )
|
|
|
558 |
PROTO_T ( IDENTIFIER id X int *pi )
|
|
|
559 |
{
|
|
|
560 |
TYPE t = NULL_type ;
|
|
|
561 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
562 |
switch ( TAG_id ( id ) ) {
|
|
|
563 |
case id_class_name_tag : {
|
|
|
564 |
/* Template classes */
|
|
|
565 |
CLASS_TYPE ct ;
|
|
|
566 |
CLASS_INFO ci ;
|
|
|
567 |
t = DEREF_type ( id_class_name_defn ( id ) ) ;
|
|
|
568 |
while ( IS_type_templ ( t ) ) {
|
|
|
569 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
570 |
}
|
|
|
571 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
572 |
ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
573 |
if ( !( ci & cinfo_defined ) ) *pi = 1 ;
|
|
|
574 |
t = DEREF_type ( ctype_form ( ct ) ) ;
|
|
|
575 |
break ;
|
|
|
576 |
}
|
|
|
577 |
case id_function_tag :
|
|
|
578 |
case id_mem_func_tag :
|
|
|
579 |
case id_stat_mem_func_tag : {
|
|
|
580 |
/* Template functions */
|
|
|
581 |
t = DEREF_type ( id_function_etc_form ( id ) ) ;
|
|
|
582 |
break ;
|
|
|
583 |
}
|
|
|
584 |
case id_stat_member_tag : {
|
|
|
585 |
/* Static data members of template classes */
|
|
|
586 |
EXP d = DEREF_exp ( id_stat_member_term ( id ) ) ;
|
|
|
587 |
if ( !IS_NULL_exp ( d ) && IS_exp_paren ( d ) ) {
|
|
|
588 |
t = DEREF_type ( exp_type ( d ) ) ;
|
|
|
589 |
}
|
|
|
590 |
break ;
|
|
|
591 |
}
|
|
|
592 |
}
|
|
|
593 |
}
|
|
|
594 |
return ( t ) ;
|
|
|
595 |
}
|
|
|
596 |
|
|
|
597 |
|
|
|
598 |
/*
|
|
|
599 |
FIND THE INSTANCES FOR A TEMPLATE
|
|
|
600 |
|
|
|
601 |
This routine returns the list of all instances for the template tid.
|
|
|
602 |
*/
|
|
|
603 |
|
|
|
604 |
static INSTANCE find_templ_apps
|
|
|
605 |
PROTO_N ( ( tid ) )
|
|
|
606 |
PROTO_T ( IDENTIFIER tid )
|
|
|
607 |
{
|
|
|
608 |
TYPE s ;
|
|
|
609 |
TOKEN sort ;
|
|
|
610 |
INSTANCE apps ;
|
|
|
611 |
if ( IS_id_class_name_etc ( tid ) ) {
|
|
|
612 |
s = DEREF_type ( id_class_name_etc_defn ( tid ) ) ;
|
|
|
613 |
} else {
|
|
|
614 |
s = DEREF_type ( id_function_etc_type ( tid ) ) ;
|
|
|
615 |
}
|
|
|
616 |
sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
617 |
apps = DEREF_inst ( tok_templ_apps ( sort ) ) ;
|
|
|
618 |
return ( apps ) ;
|
|
|
619 |
}
|
|
|
620 |
|
|
|
621 |
|
|
|
622 |
/*
|
|
|
623 |
FIND A TEMPLATE INSTANCE
|
|
|
624 |
|
|
|
625 |
This routine searches for a previous instance of the template tid
|
|
|
626 |
of sort tok with the template arguments args.
|
|
|
627 |
*/
|
|
|
628 |
|
|
|
629 |
static IDENTIFIER find_instance
|
|
|
630 |
PROTO_N ( ( tid, tok, args, def ) )
|
|
|
631 |
PROTO_T ( IDENTIFIER tid X TOKEN tok X LIST ( TOKEN ) args X int def )
|
|
|
632 |
{
|
|
|
633 |
INSTANCE apps ;
|
|
|
634 |
int fs = force_tokdef ;
|
|
|
635 |
int ft = force_template ;
|
|
|
636 |
force_tokdef = 0 ;
|
|
|
637 |
force_template = 0 ;
|
|
|
638 |
apps = DEREF_inst ( tok_templ_apps ( tok ) ) ;
|
|
|
639 |
while ( !IS_NULL_inst ( apps ) ) {
|
|
|
640 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( apps ) ) ;
|
|
|
641 |
if ( !( acc & dspec_alias ) ) {
|
|
|
642 |
IDENTIFIER fid ;
|
|
|
643 |
LIST ( TOKEN ) fargs ;
|
|
|
644 |
TYPE form = DEREF_type ( inst_form ( apps ) ) ;
|
|
|
645 |
while ( IS_type_templ ( form ) ) {
|
|
|
646 |
form = DEREF_type ( type_templ_defn ( form ) ) ;
|
|
|
647 |
}
|
|
|
648 |
fid = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
649 |
fargs = DEREF_list ( type_token_args ( form ) ) ;
|
|
|
650 |
if ( eq_token_args ( tid, fid, args, fargs ) ) {
|
|
|
651 |
/* Match found */
|
|
|
652 |
IDENTIFIER id = DEREF_id ( inst_templ_id ( apps ) ) ;
|
|
|
653 |
if ( def ) {
|
|
|
654 |
/* Mark instance as used */
|
|
|
655 |
acc |= dspec_used ;
|
|
|
656 |
COPY_dspec ( inst_templ_access ( apps ), acc ) ;
|
|
|
657 |
}
|
|
|
658 |
force_template = ft ;
|
|
|
659 |
force_tokdef = fs ;
|
|
|
660 |
return ( id ) ;
|
|
|
661 |
}
|
|
|
662 |
}
|
|
|
663 |
apps = DEREF_inst ( inst_next ( apps ) ) ;
|
|
|
664 |
}
|
|
|
665 |
force_template = ft ;
|
|
|
666 |
force_tokdef = fs ;
|
|
|
667 |
return ( NULL_id ) ;
|
|
|
668 |
}
|
|
|
669 |
|
|
|
670 |
|
|
|
671 |
/*
|
|
|
672 |
VALIDATE A SET OF TEMPLATE ARGUMENTS
|
|
|
673 |
|
|
|
674 |
This routine performs a final validation for the template arguments
|
|
|
675 |
args for the template id of sort sort.
|
|
|
676 |
*/
|
|
|
677 |
|
|
|
678 |
static void valid_template_args
|
|
|
679 |
PROTO_N ( ( id, sort, args ) )
|
|
|
680 |
PROTO_T ( IDENTIFIER id X TOKEN sort X LIST ( TOKEN ) args )
|
|
|
681 |
{
|
|
|
682 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
683 |
while ( !IS_NULL_list ( pids ) && !IS_NULL_list ( args ) ) {
|
|
|
684 |
TOKEN arg = DEREF_tok ( HEAD_list ( args ) ) ;
|
|
|
685 |
IDENTIFIER pid = DEREF_id ( HEAD_list ( pids ) ) ;
|
|
|
686 |
TOKEN par = DEREF_tok ( id_token_sort ( pid ) ) ;
|
|
|
687 |
unsigned kind = TAG_tok ( par ) ;
|
|
|
688 |
if ( !IS_NULL_tok ( arg ) && TAG_tok ( arg ) == kind ) {
|
|
|
689 |
if ( kind == tok_type_tag ) {
|
|
|
690 |
/* Check template types */
|
|
|
691 |
TYPE t = DEREF_type ( tok_type_value ( arg ) ) ;
|
|
|
692 |
BASE_TYPE bt = DEREF_btype ( tok_type_kind ( par ) ) ;
|
|
|
693 |
bt &= btype_named ;
|
|
|
694 |
if ( bt != btype_none ) {
|
|
|
695 |
/* Check elaborated template type */
|
|
|
696 |
int ok = 0 ;
|
|
|
697 |
unsigned tag = TAG_type ( t ) ;
|
|
|
698 |
if ( bt == btype_enum ) {
|
|
|
699 |
if ( tag == type_enumerate_tag ) ok = 1 ;
|
|
|
700 |
} else {
|
|
|
701 |
if ( tag == type_compound_tag ) {
|
|
|
702 |
CLASS_TYPE ct ;
|
|
|
703 |
BASE_TYPE key ;
|
|
|
704 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
705 |
key = find_class_key ( ct ) ;
|
|
|
706 |
ok = equal_key ( bt, key ) ;
|
|
|
707 |
}
|
|
|
708 |
}
|
|
|
709 |
if ( !ok && tag != type_error_tag ) {
|
|
|
710 |
/* Report type mismatch */
|
|
|
711 |
ERROR err = ERR_temp_res_key ( bt, pid, id, t ) ;
|
|
|
712 |
report ( crt_loc, err ) ;
|
|
|
713 |
}
|
|
|
714 |
}
|
|
|
715 |
break ;
|
|
|
716 |
}
|
|
|
717 |
}
|
|
|
718 |
pids = TAIL_list ( pids ) ;
|
|
|
719 |
args = TAIL_list ( args ) ;
|
|
|
720 |
}
|
|
|
721 |
return ;
|
|
|
722 |
}
|
|
|
723 |
|
|
|
724 |
|
|
|
725 |
/*
|
|
|
726 |
FIND THE MOST SPECIALISED OF A LIST OF SPECIALISATIONS
|
|
|
727 |
|
|
|
728 |
This routine forms the main body of body_match. It runs a tournament
|
|
|
729 |
to find the most specialised of the template specialisations apps.
|
|
|
730 |
Note that the result is not necessarily more specialised than all
|
|
|
731 |
the other elements of apps, but if there is such a most specialised
|
|
|
732 |
element then it will be the winner of this tournament.
|
|
|
733 |
*/
|
|
|
734 |
|
|
|
735 |
static INSTANCE best_match_aux
|
|
|
736 |
PROTO_N ( ( apps ) )
|
|
|
737 |
PROTO_T ( LIST ( INSTANCE ) apps )
|
|
|
738 |
{
|
|
|
739 |
int cmp ;
|
|
|
740 |
TYPE t, s ;
|
|
|
741 |
INSTANCE a, b ;
|
|
|
742 |
if ( IS_NULL_list ( apps ) ) return ( NULL_inst ) ;
|
|
|
743 |
a = DEREF_inst ( HEAD_list ( apps ) ) ;
|
|
|
744 |
b = best_match_aux ( TAIL_list ( apps ) ) ;
|
|
|
745 |
if ( IS_NULL_inst ( b ) ) return ( a ) ;
|
|
|
746 |
t = DEREF_type ( inst_form ( a ) ) ;
|
|
|
747 |
s = DEREF_type ( inst_form ( b ) ) ;
|
|
|
748 |
cmp = eq_type ( t, s ) ;
|
|
|
749 |
if ( cmp == 2 ) return ( b ) ;
|
|
|
750 |
if ( cmp == 3 ) return ( a ) ;
|
|
|
751 |
return ( NULL_inst ) ;
|
|
|
752 |
}
|
|
|
753 |
|
|
|
754 |
|
|
|
755 |
/*
|
|
|
756 |
FIND THE MOST SPECIALISED OF A LIST OF SPECIALISATIONS
|
|
|
757 |
|
|
|
758 |
This routine finds the most specialised of the template specialisations
|
|
|
759 |
apps. It returns the null instance if there is no match or the result
|
|
|
760 |
is ambiguous.
|
|
|
761 |
*/
|
|
|
762 |
|
|
|
763 |
static INSTANCE best_match
|
|
|
764 |
PROTO_N ( ( apps ) )
|
|
|
765 |
PROTO_T ( LIST ( INSTANCE ) apps )
|
|
|
766 |
{
|
|
|
767 |
INSTANCE a = best_match_aux ( apps ) ;
|
|
|
768 |
if ( !IS_NULL_inst ( a ) && LENGTH_list ( apps ) > 2 ) {
|
|
|
769 |
TYPE t = DEREF_type ( inst_form ( a ) ) ;
|
|
|
770 |
while ( !IS_NULL_list ( apps ) ) {
|
|
|
771 |
INSTANCE b = DEREF_inst ( HEAD_list ( apps ) ) ;
|
|
|
772 |
if ( !EQ_inst ( b, a ) ) {
|
|
|
773 |
TYPE s = DEREF_type ( inst_form ( b ) ) ;
|
|
|
774 |
int cmp = eq_type ( t, s ) ;
|
|
|
775 |
if ( cmp != 3 ) {
|
|
|
776 |
/* a is not more specialised than b */
|
|
|
777 |
a = NULL_inst ;
|
|
|
778 |
break ;
|
|
|
779 |
}
|
|
|
780 |
}
|
|
|
781 |
apps = TAIL_list ( apps ) ;
|
|
|
782 |
}
|
|
|
783 |
}
|
|
|
784 |
return ( a ) ;
|
|
|
785 |
}
|
|
|
786 |
|
|
|
787 |
|
|
|
788 |
/*
|
|
|
789 |
DOES A TEMPLATE CLASS INSTANCE SPECIALISE A MEMBER?
|
|
|
790 |
|
|
|
791 |
This routine checks whether the template class instance app contains
|
|
|
792 |
a specialisation of the member mid.
|
|
|
793 |
*/
|
|
|
794 |
|
|
|
795 |
static int specialise_member
|
|
|
796 |
PROTO_N ( ( app, mid ) )
|
|
|
797 |
PROTO_T ( INSTANCE app X IDENTIFIER mid )
|
|
|
798 |
{
|
|
|
799 |
if ( !IS_NULL_id ( mid ) ) {
|
|
|
800 |
LIST ( IDENTIFIER ) mems = DEREF_list ( inst_templ_mems ( app ) ) ;
|
|
|
801 |
while ( !IS_NULL_list ( mems ) ) {
|
|
|
802 |
IDENTIFIER nid = DEREF_id ( HEAD_list ( mems ) ) ;
|
|
|
803 |
if ( EQ_id ( nid, mid ) ) return ( 1 ) ;
|
|
|
804 |
mems = TAIL_list ( mems ) ;
|
|
|
805 |
}
|
|
|
806 |
}
|
|
|
807 |
return ( 0 ) ;
|
|
|
808 |
}
|
|
|
809 |
|
|
|
810 |
|
|
|
811 |
/*
|
|
|
812 |
FIND THE MOST SPECIALISED TEMPLATE MATCHING AN INSTANCE
|
|
|
813 |
|
|
|
814 |
This routine returns the most specialised template specialisation
|
|
|
815 |
from the list apps which contains a specialisation of the member mid
|
|
|
816 |
and matches the instance form. If there is no such specialisation
|
|
|
817 |
or the result is ambiguous then the null instance is returned.
|
|
|
818 |
*/
|
|
|
819 |
|
|
|
820 |
static INSTANCE match_form
|
|
|
821 |
PROTO_N ( ( app, form, mid ) )
|
|
|
822 |
PROTO_T ( INSTANCE app X TYPE form X IDENTIFIER mid )
|
|
|
823 |
{
|
|
|
824 |
INSTANCE best = NULL_inst ;
|
|
|
825 |
LIST ( INSTANCE ) match = NULL_list ( INSTANCE ) ;
|
|
|
826 |
force_template++ ;
|
|
|
827 |
while ( !IS_NULL_inst ( app ) ) {
|
|
|
828 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( app ) ) ;
|
|
|
829 |
if ( !( acc & ( dspec_alias | dspec_main ) ) ) {
|
|
|
830 |
if ( ( acc & dspec_extern ) || specialise_member ( app, mid ) ) {
|
|
|
831 |
TYPE prev = DEREF_type ( inst_form ( app ) ) ;
|
|
|
832 |
int cmp = eq_type ( prev, form ) ;
|
|
|
833 |
if ( cmp == 1 || cmp == 2 ) {
|
|
|
834 |
/* Matches specialisation */
|
|
|
835 |
CONS_inst ( app, match, match ) ;
|
|
|
836 |
}
|
|
|
837 |
}
|
|
|
838 |
}
|
|
|
839 |
app = DEREF_inst ( inst_next ( app ) ) ;
|
|
|
840 |
}
|
|
|
841 |
if ( !IS_NULL_list ( match ) ) {
|
|
|
842 |
/* Determine most specialised match */
|
|
|
843 |
best = best_match ( match ) ;
|
|
|
844 |
if ( IS_NULL_inst ( best ) ) {
|
|
|
845 |
/* Ambiguous specialisation */
|
|
|
846 |
report ( crt_loc, ERR_temp_class_spec_ambig ( form ) ) ;
|
|
|
847 |
} else {
|
|
|
848 |
/* Unambiguous specialisation */
|
|
|
849 |
IDENTIFIER bid = DEREF_id ( inst_templ_id ( best ) ) ;
|
|
|
850 |
report ( crt_loc, ERR_temp_class_spec_match ( bid ) ) ;
|
|
|
851 |
}
|
|
|
852 |
DESTROY_list ( match, SIZE_inst ) ;
|
|
|
853 |
}
|
|
|
854 |
force_template-- ;
|
|
|
855 |
return ( best ) ;
|
|
|
856 |
}
|
|
|
857 |
|
|
|
858 |
|
|
|
859 |
/*
|
|
|
860 |
DEDUCE ARGUMENTS FOR TEMPLATE SPECIALISATION
|
|
|
861 |
|
|
|
862 |
This routine deduces the arguments required for the template
|
|
|
863 |
specialisation spec to instantiate the matching instance form.
|
|
|
864 |
*/
|
|
|
865 |
|
|
|
866 |
static TYPE specialise_args
|
|
|
867 |
PROTO_N ( ( spec, form ) )
|
|
|
868 |
PROTO_T ( INSTANCE spec X TYPE form )
|
|
|
869 |
{
|
|
|
870 |
TYPE s = DEREF_type ( inst_form ( spec ) ) ;
|
|
|
871 |
if ( IS_type_templ ( s ) ) {
|
|
|
872 |
int d ;
|
|
|
873 |
int eq ;
|
|
|
874 |
TYPE r = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
875 |
TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
876 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
877 |
force_template++ ;
|
|
|
878 |
d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
|
|
|
879 |
eq = eq_type ( r, form ) ;
|
|
|
880 |
if ( eq == 1 || eq == 2 ) {
|
|
|
881 |
/* Argument deduction successful */
|
|
|
882 |
ERROR err = NULL_err ;
|
|
|
883 |
IDENTIFIER id = DEREF_id ( inst_templ_id ( spec ) ) ;
|
|
|
884 |
LIST ( TOKEN ) args = make_token_args ( id, pids, &err ) ;
|
|
|
885 |
if ( IS_NULL_err ( err ) ) {
|
|
|
886 |
/* Successful deduction */
|
|
|
887 |
MAKE_type_token ( cv_none, id, args, form ) ;
|
|
|
888 |
COPY_inst ( type_token_app ( form ), spec ) ;
|
|
|
889 |
} else {
|
|
|
890 |
destroy_error ( err, 1 ) ;
|
|
|
891 |
}
|
|
|
892 |
}
|
|
|
893 |
restore_token_args ( pids, d ) ;
|
|
|
894 |
force_template-- ;
|
|
|
895 |
} else {
|
|
|
896 |
IDENTIFIER id = DEREF_id ( inst_templ_id ( spec ) ) ;
|
|
|
897 |
MAKE_type_token ( cv_none, id, NULL_list ( TOKEN ), form ) ;
|
|
|
898 |
}
|
|
|
899 |
return ( form ) ;
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
|
|
|
903 |
/*
|
|
|
904 |
MATCH A TEMPLATE SPECIALISATION
|
|
|
905 |
|
|
|
906 |
This routine finds the template specialisation which best matches the
|
|
|
907 |
template instance given by form. If mid is the null identifier then
|
|
|
908 |
only explicit specialisations are considered. Otherwise any
|
|
|
909 |
specialisation which specialises the member mid is considered.
|
|
|
910 |
*/
|
|
|
911 |
|
|
|
912 |
static TYPE specialise_form
|
|
|
913 |
PROTO_N ( ( form, mid ) )
|
|
|
914 |
PROTO_T ( TYPE form X IDENTIFIER mid )
|
|
|
915 |
{
|
|
|
916 |
if ( !IS_NULL_type ( form ) && IS_type_token ( form ) ) {
|
|
|
917 |
IDENTIFIER tid = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
918 |
INSTANCE app = DEREF_inst ( type_token_app ( form ) ) ;
|
|
|
919 |
if ( !IS_NULL_inst ( app ) ) {
|
|
|
920 |
TYPE spec = DEREF_type ( inst_templ_spec ( app ) ) ;
|
|
|
921 |
if ( IS_NULL_type ( spec ) || !IS_NULL_id ( mid ) ) {
|
|
|
922 |
/* Not previously determined */
|
|
|
923 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( app ) ) ;
|
|
|
924 |
if ( acc & dspec_explicit ) {
|
|
|
925 |
/* Explicit specialisation */
|
|
|
926 |
IDENTIFIER id = DEREF_id ( inst_templ_id ( app ) ) ;
|
|
|
927 |
LIST ( TOKEN ) args = NULL_list ( TOKEN ) ;
|
|
|
928 |
MAKE_type_token ( cv_none, id, args, spec ) ;
|
|
|
929 |
COPY_inst ( type_token_app ( spec ), app ) ;
|
|
|
930 |
} else if ( acc & dspec_instance ) {
|
|
|
931 |
/* Find matching partial specialisations */
|
|
|
932 |
INSTANCE best = find_templ_apps ( tid ) ;
|
|
|
933 |
best = match_form ( best, form, mid ) ;
|
|
|
934 |
if ( !IS_NULL_inst ( best ) ) {
|
|
|
935 |
/* Use matching specialisation */
|
|
|
936 |
spec = specialise_args ( best, form ) ;
|
|
|
937 |
} else {
|
|
|
938 |
/* Use primary form */
|
|
|
939 |
spec = form ;
|
|
|
940 |
}
|
|
|
941 |
}
|
|
|
942 |
if ( IS_NULL_id ( mid ) ) {
|
|
|
943 |
/* Record best explicit match */
|
|
|
944 |
COPY_type ( inst_templ_spec ( app ), spec ) ;
|
|
|
945 |
}
|
|
|
946 |
}
|
|
|
947 |
if ( !IS_NULL_type ( spec ) ) form = spec ;
|
|
|
948 |
}
|
|
|
949 |
}
|
|
|
950 |
return ( form ) ;
|
|
|
951 |
}
|
|
|
952 |
|
|
|
953 |
|
|
|
954 |
/*
|
|
|
955 |
FIND THE COPIED VERSION OF A CLASS MEMBER
|
|
|
956 |
|
|
|
957 |
This routine is identical to find_copied except that it allows for
|
|
|
958 |
template instances when type is not 2.
|
|
|
959 |
*/
|
|
|
960 |
|
|
|
961 |
static IDENTIFIER find_copied_member
|
|
|
962 |
PROTO_N ( ( cid, id, res, type ) )
|
|
|
963 |
PROTO_T ( IDENTIFIER cid X IDENTIFIER id X int res X int type )
|
|
|
964 |
{
|
|
|
965 |
if ( type != 2 ) {
|
|
|
966 |
int undef = 0 ;
|
|
|
967 |
TYPE form = find_form ( id, &undef ) ;
|
|
|
968 |
if ( !IS_NULL_type ( form ) && IS_type_token ( form ) ) {
|
|
|
969 |
/* Template instance */
|
|
|
970 |
IDENTIFIER tid = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
971 |
LIST ( TOKEN ) args = DEREF_list ( type_token_args ( form ) ) ;
|
|
|
972 |
tid = find_copied ( cid, tid, 1 ) ;
|
|
|
973 |
id = apply_template ( tid, args, 0, 0 ) ;
|
|
|
974 |
return ( id ) ;
|
|
|
975 |
}
|
|
|
976 |
}
|
|
|
977 |
id = find_copied ( cid, id, res ) ;
|
|
|
978 |
return ( id ) ;
|
|
|
979 |
}
|
|
|
980 |
|
|
|
981 |
|
|
|
982 |
/*
|
|
|
983 |
MATCH A TEMPLATE MEMBER SPECIALISATION
|
|
|
984 |
|
|
|
985 |
This routine finds the specialisation best matching the template instance
|
|
|
986 |
or class template member id and specialising the member pid.
|
|
|
987 |
*/
|
|
|
988 |
|
|
|
989 |
static IDENTIFIER match_specialise
|
|
|
990 |
PROTO_N ( ( id, pid ) )
|
|
|
991 |
PROTO_T ( IDENTIFIER id X IDENTIFIER pid )
|
|
|
992 |
{
|
|
|
993 |
int undef = 0 ;
|
|
|
994 |
IDENTIFIER tid = NULL_id ;
|
|
|
995 |
TYPE form = find_form ( id, &undef ) ;
|
|
|
996 |
if ( !IS_NULL_type ( form ) ) {
|
|
|
997 |
if ( IS_type_token ( form ) ) {
|
|
|
998 |
/* Template instance */
|
|
|
999 |
TYPE spec = specialise_form ( form, pid ) ;
|
|
|
1000 |
tid = DEREF_id ( type_token_tok ( spec ) ) ;
|
|
|
1001 |
} else if ( IS_type_instance ( form ) ) {
|
|
|
1002 |
/* Member of template class */
|
|
|
1003 |
NAMESPACE cns ;
|
|
|
1004 |
tid = DEREF_id ( type_instance_id ( form ) ) ;
|
|
|
1005 |
cns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
1006 |
if ( !IS_NULL_nspace ( cns ) ) {
|
|
|
1007 |
IDENTIFIER cid = DEREF_id ( nspace_name ( cns ) ) ;
|
|
|
1008 |
IDENTIFIER rid = match_specialise ( cid, tid ) ;
|
|
|
1009 |
if ( !IS_NULL_id ( rid ) ) {
|
|
|
1010 |
if ( EQ_id ( rid, cid ) ) {
|
|
|
1011 |
tid = id ;
|
|
|
1012 |
} else {
|
|
|
1013 |
tid = find_copied_member ( rid, tid, 1, 2 ) ;
|
|
|
1014 |
}
|
|
|
1015 |
}
|
|
|
1016 |
}
|
|
|
1017 |
}
|
|
|
1018 |
}
|
|
|
1019 |
return ( tid ) ;
|
|
|
1020 |
}
|
|
|
1021 |
|
|
|
1022 |
|
|
|
1023 |
/*
|
|
|
1024 |
SET TEMPLATE PARAMETERS
|
|
|
1025 |
|
|
|
1026 |
This routine sets the template parameters for the instance form.
|
|
|
1027 |
*/
|
|
|
1028 |
|
|
|
1029 |
static int set_templ_args
|
|
|
1030 |
PROTO_N ( ( form ) )
|
|
|
1031 |
PROTO_T ( TYPE form )
|
|
|
1032 |
{
|
|
|
1033 |
int d = 0 ;
|
|
|
1034 |
INSTANCE app = DEREF_inst ( type_token_app ( form ) ) ;
|
|
|
1035 |
TYPE spec = DEREF_type ( inst_form ( app ) ) ;
|
|
|
1036 |
if ( IS_type_templ ( spec ) ) {
|
|
|
1037 |
TOKEN sort = DEREF_tok ( type_templ_sort ( spec ) ) ;
|
|
|
1038 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
1039 |
LIST ( TOKEN ) args = DEREF_list ( type_token_args ( form ) ) ;
|
|
|
1040 |
d = save_token_args ( pids, args ) ;
|
|
|
1041 |
}
|
|
|
1042 |
return ( d ) ;
|
|
|
1043 |
}
|
|
|
1044 |
|
|
|
1045 |
|
|
|
1046 |
/*
|
|
|
1047 |
RESTORE TEMPLATE PARAMETERS
|
|
|
1048 |
|
|
|
1049 |
This routine restores the template parameters for the instance form.
|
|
|
1050 |
d is the value returned from the corresponding call to set_templ_args.
|
|
|
1051 |
*/
|
|
|
1052 |
|
|
|
1053 |
static void restore_templ_args
|
|
|
1054 |
PROTO_N ( ( form, d ) )
|
|
|
1055 |
PROTO_T ( TYPE form X int d )
|
|
|
1056 |
{
|
|
|
1057 |
INSTANCE app = DEREF_inst ( type_token_app ( form ) ) ;
|
|
|
1058 |
TYPE spec = DEREF_type ( inst_form ( app ) ) ;
|
|
|
1059 |
if ( IS_type_templ ( spec ) ) {
|
|
|
1060 |
TOKEN sort = DEREF_tok ( type_templ_sort ( spec ) ) ;
|
|
|
1061 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
1062 |
restore_token_args ( pids, d ) ;
|
|
|
1063 |
}
|
|
|
1064 |
return ;
|
|
|
1065 |
}
|
|
|
1066 |
|
|
|
1067 |
|
|
|
1068 |
/*
|
|
|
1069 |
REPORT THE INSTANTIATION OF A TEMPLATE
|
|
|
1070 |
|
|
|
1071 |
This routine reports the instantiation of the template with the
|
|
|
1072 |
given form.
|
|
|
1073 |
*/
|
|
|
1074 |
|
|
|
1075 |
static void report_instance
|
|
|
1076 |
PROTO_N ( ( form ) )
|
|
|
1077 |
PROTO_T ( TYPE form )
|
|
|
1078 |
{
|
|
|
1079 |
ERROR err = ERR_temp_inst_def ( form ) ;
|
|
|
1080 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1081 |
if ( is_templ_depend ( form ) ) {
|
|
|
1082 |
destroy_error ( err, 1 ) ;
|
|
|
1083 |
} else {
|
|
|
1084 |
report ( crt_loc, err ) ;
|
|
|
1085 |
}
|
|
|
1086 |
}
|
|
|
1087 |
return ;
|
|
|
1088 |
}
|
|
|
1089 |
|
|
|
1090 |
|
|
|
1091 |
/*
|
|
|
1092 |
INSTANTIATE A FUNCTION TEMPLATE
|
|
|
1093 |
|
|
|
1094 |
This routine creates an instance of the function template id with
|
|
|
1095 |
the template arguments args.
|
|
|
1096 |
*/
|
|
|
1097 |
|
|
|
1098 |
IDENTIFIER instance_func
|
|
|
1099 |
PROTO_N ( ( id, args, func, def ) )
|
|
|
1100 |
PROTO_T ( IDENTIFIER id X LIST ( TOKEN ) args X int func X int def )
|
|
|
1101 |
{
|
|
|
1102 |
int d = 0 ;
|
|
|
1103 |
IDENTIFIER tid ;
|
|
|
1104 |
IDENTIFIER rid = DEREF_id ( id_alias ( id ) ) ;
|
|
|
1105 |
TYPE s = DEREF_type ( id_function_etc_type ( rid ) ) ;
|
|
|
1106 |
TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
1107 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
1108 |
if ( func ) {
|
|
|
1109 |
/* Arguments already bound */
|
|
|
1110 |
/* EMPTY */
|
|
|
1111 |
} else {
|
|
|
1112 |
/* Bind arguments to parameters */
|
|
|
1113 |
d = save_token_args ( pids, args ) ;
|
|
|
1114 |
}
|
|
|
1115 |
|
|
|
1116 |
/* Find template instance */
|
|
|
1117 |
tid = find_instance ( rid, sort, args, def ) ;
|
|
|
1118 |
if ( IS_NULL_id ( tid ) ) {
|
|
|
1119 |
/* Create a new instance */
|
|
|
1120 |
TYPE form ;
|
|
|
1121 |
ERROR perr ;
|
|
|
1122 |
PTR ( LOCATION ) ploc ;
|
|
|
1123 |
valid_template_args ( rid, sort, args ) ;
|
|
|
1124 |
MAKE_type_token ( cv_none, rid, args, form ) ;
|
|
|
1125 |
dump_template++ ;
|
|
|
1126 |
ploc = MAKE_ptr ( SIZE_loc ) ;
|
|
|
1127 |
COPY_loc ( ploc, crt_loc ) ;
|
|
|
1128 |
perr = set_prefix ( ERR_temp_inst_comment ( form, ploc ) ) ;
|
|
|
1129 |
if ( incr_value ( OPT_VAL_instance_depth ) ) {
|
|
|
1130 |
DECL_SPEC ds ;
|
|
|
1131 |
INSTANCE apps ;
|
|
|
1132 |
HASHID nm = DEREF_hashid ( id_name ( rid ) ) ;
|
|
|
1133 |
|
|
|
1134 |
/* Create new instance */
|
|
|
1135 |
tid = copy_id ( rid, 2 ) ;
|
|
|
1136 |
nm = expand_name ( nm, NULL_ctype ) ;
|
|
|
1137 |
COPY_hashid ( id_name ( tid ), nm ) ;
|
|
|
1138 |
ds = DEREF_dspec ( id_storage ( tid ) ) ;
|
|
|
1139 |
ds &= ~( dspec_used | dspec_called | dspec_done | dspec_defn ) ;
|
|
|
1140 |
ds &= ~dspec_template ;
|
|
|
1141 |
ds |= dspec_instance ;
|
|
|
1142 |
COPY_dspec ( id_storage ( tid ), ds ) ;
|
|
|
1143 |
COPY_exp ( id_function_etc_defn ( tid ), NULL_exp ) ;
|
|
|
1144 |
COPY_id ( id_function_etc_over ( tid ), NULL_id ) ;
|
|
|
1145 |
COPY_type ( id_function_etc_form ( tid ), form ) ;
|
|
|
1146 |
|
|
|
1147 |
/* Check operator type */
|
|
|
1148 |
s = DEREF_type ( id_function_etc_type ( tid ) ) ;
|
|
|
1149 |
#if LANGUAGE_CPP
|
|
|
1150 |
if ( IS_hashid_op ( nm ) ) {
|
|
|
1151 |
int mem = 1 ;
|
|
|
1152 |
int alloc = 0 ;
|
|
|
1153 |
if ( IS_id_function ( tid ) ) mem = 0 ;
|
|
|
1154 |
s = check_operator ( s, tid, mem, &alloc ) ;
|
|
|
1155 |
if ( alloc ) recheck_allocator ( tid, alloc ) ;
|
|
|
1156 |
}
|
|
|
1157 |
#endif
|
|
|
1158 |
|
|
|
1159 |
/* Add new template application */
|
|
|
1160 |
if ( IS_type_func ( s ) ) {
|
|
|
1161 |
/* Full specialisation */
|
|
|
1162 |
ds = dspec_instance ;
|
|
|
1163 |
} else {
|
|
|
1164 |
/* Partial specialisation */
|
|
|
1165 |
ds = dspec_implicit ;
|
|
|
1166 |
}
|
|
|
1167 |
if ( def ) ds |= dspec_used ;
|
|
|
1168 |
if ( is_templ_depend ( form ) ) ds |= dspec_mutable ;
|
|
|
1169 |
apps = DEREF_inst ( tok_templ_apps ( sort ) ) ;
|
|
|
1170 |
MAKE_inst_templ ( form, apps, tid, ds, all_instances, apps ) ;
|
|
|
1171 |
COPY_inst ( type_token_app ( form ), apps ) ;
|
|
|
1172 |
COPY_inst ( tok_templ_apps ( sort ), apps ) ;
|
|
|
1173 |
all_instances = apps ;
|
|
|
1174 |
if ( do_dump ) {
|
|
|
1175 |
/* Dump template instance information */
|
|
|
1176 |
dump_declare ( tid, &crt_loc, 0 ) ;
|
|
|
1177 |
dump_instance ( tid, form, form ) ;
|
|
|
1178 |
}
|
|
|
1179 |
|
|
|
1180 |
} else {
|
|
|
1181 |
/* Instantiation depth too great */
|
|
|
1182 |
tid = rid ;
|
|
|
1183 |
}
|
|
|
1184 |
decr_value ( OPT_VAL_instance_depth ) ;
|
|
|
1185 |
restore_prefix ( perr ) ;
|
|
|
1186 |
DESTROY_ptr ( ploc, SIZE_loc ) ;
|
|
|
1187 |
dump_template-- ;
|
|
|
1188 |
}
|
|
|
1189 |
if ( func ) {
|
|
|
1190 |
/* Check for templates */
|
|
|
1191 |
s = DEREF_type ( id_function_etc_type ( tid ) ) ;
|
|
|
1192 |
if ( IS_type_templ ( s ) ) tid = NULL_id ;
|
|
|
1193 |
} else {
|
|
|
1194 |
restore_token_args ( pids, d ) ;
|
|
|
1195 |
}
|
|
|
1196 |
return ( tid ) ;
|
|
|
1197 |
}
|
|
|
1198 |
|
|
|
1199 |
|
|
|
1200 |
/*
|
|
|
1201 |
INSTANTIATE A CLASS TEMPLATE
|
|
|
1202 |
|
|
|
1203 |
This routine creates an instance of the class template id with the
|
|
|
1204 |
template arguments args. def is true if the class should be
|
|
|
1205 |
defined.
|
|
|
1206 |
*/
|
|
|
1207 |
|
|
|
1208 |
IDENTIFIER instance_type
|
|
|
1209 |
PROTO_N ( ( id, args, type, def ) )
|
|
|
1210 |
PROTO_T ( IDENTIFIER id X LIST ( TOKEN ) args X int type X int def )
|
|
|
1211 |
{
|
|
|
1212 |
int d = 0 ;
|
|
|
1213 |
int undef = 0 ;
|
|
|
1214 |
CLASS_TYPE cs ;
|
|
|
1215 |
IDENTIFIER tid ;
|
|
|
1216 |
TYPE form = NULL_type ;
|
|
|
1217 |
IDENTIFIER rid = DEREF_id ( id_alias ( id ) ) ;
|
|
|
1218 |
TYPE s = DEREF_type ( id_class_name_defn ( rid ) ) ;
|
|
|
1219 |
TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
1220 |
LIST ( IDENTIFIER ) pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
1221 |
if ( type ) {
|
|
|
1222 |
/* Arguments already bound */
|
|
|
1223 |
/* EMPTY */
|
|
|
1224 |
} else {
|
|
|
1225 |
/* Bind arguments to parameters */
|
|
|
1226 |
d = save_token_args ( pids, args ) ;
|
|
|
1227 |
}
|
|
|
1228 |
|
|
|
1229 |
/* Check template class */
|
|
|
1230 |
while ( IS_type_templ ( s ) ) {
|
|
|
1231 |
s = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
1232 |
}
|
|
|
1233 |
cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
1234 |
|
|
|
1235 |
/* Find template instance */
|
|
|
1236 |
tid = find_instance ( rid, sort, args, def ) ;
|
|
|
1237 |
if ( !IS_NULL_id ( tid ) && def ) {
|
|
|
1238 |
form = find_form ( tid, &undef ) ;
|
|
|
1239 |
}
|
|
|
1240 |
if ( IS_NULL_id ( tid ) || ( def && undef ) ) {
|
|
|
1241 |
/* Create a new instance or define an existing one */
|
|
|
1242 |
ERROR perr ;
|
|
|
1243 |
PTR ( LOCATION ) ploc ;
|
|
|
1244 |
if ( IS_NULL_type ( form ) ) {
|
|
|
1245 |
valid_template_args ( rid, sort, args ) ;
|
|
|
1246 |
MAKE_type_token ( cv_none, rid, args, form ) ;
|
|
|
1247 |
}
|
|
|
1248 |
dump_template++ ;
|
|
|
1249 |
if ( def ) report_instance ( form ) ;
|
|
|
1250 |
ploc = MAKE_ptr ( SIZE_loc ) ;
|
|
|
1251 |
COPY_loc ( ploc, crt_loc ) ;
|
|
|
1252 |
perr = set_prefix ( ERR_temp_inst_comment ( form, ploc ) ) ;
|
|
|
1253 |
if ( incr_value ( OPT_VAL_instance_depth ) ) {
|
|
|
1254 |
TYPE t ;
|
|
|
1255 |
int d2 = 0 ;
|
|
|
1256 |
DECL_SPEC ds ;
|
|
|
1257 |
CLASS_TYPE ct ;
|
|
|
1258 |
int created = 0 ;
|
|
|
1259 |
TYPE spec = form ;
|
|
|
1260 |
CLASS_INFO ci = cinfo_templ_base ;
|
|
|
1261 |
|
|
|
1262 |
/* Create new instance if necessary */
|
|
|
1263 |
if ( IS_NULL_id ( tid ) ) {
|
|
|
1264 |
INSTANCE apps ;
|
|
|
1265 |
tid = copy_id ( rid, 2 ) ;
|
|
|
1266 |
ds = DEREF_dspec ( id_storage ( tid ) ) ;
|
|
|
1267 |
ds &= ~( dspec_used | dspec_done | dspec_defn ) ;
|
|
|
1268 |
ds &= ~dspec_template ;
|
|
|
1269 |
ds |= dspec_instance ;
|
|
|
1270 |
COPY_dspec ( id_storage ( tid ), ds ) ;
|
|
|
1271 |
|
|
|
1272 |
/* Add new template application */
|
|
|
1273 |
ds = dspec_instance ;
|
|
|
1274 |
if ( def ) ds |= dspec_used ;
|
|
|
1275 |
if ( is_templ_depend ( form ) ) ds |= dspec_mutable ;
|
|
|
1276 |
apps = DEREF_inst ( tok_templ_apps ( sort ) ) ;
|
|
|
1277 |
MAKE_inst_templ ( form, apps, tid, ds, all_instances, apps ) ;
|
|
|
1278 |
COPY_inst ( type_token_app ( form ), apps ) ;
|
|
|
1279 |
COPY_inst ( tok_templ_apps ( sort ), apps ) ;
|
|
|
1280 |
all_instances = apps ;
|
|
|
1281 |
created = 1 ;
|
|
|
1282 |
}
|
|
|
1283 |
|
|
|
1284 |
/* Check for matching specialisations */
|
|
|
1285 |
if ( def ) {
|
|
|
1286 |
spec = specialise_form ( form, NULL_id ) ;
|
|
|
1287 |
if ( !EQ_type ( spec, form ) ) {
|
|
|
1288 |
/* Specialisation found */
|
|
|
1289 |
d2 = set_templ_args ( spec ) ;
|
|
|
1290 |
rid = DEREF_id ( type_token_tok ( spec ) ) ;
|
|
|
1291 |
s = DEREF_type ( id_class_name_defn ( rid ) ) ;
|
|
|
1292 |
while ( IS_type_templ ( s ) ) {
|
|
|
1293 |
s = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
1294 |
}
|
|
|
1295 |
cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
1296 |
if ( !created ) {
|
|
|
1297 |
if ( do_dump ) dump_instance ( tid, form, spec ) ;
|
|
|
1298 |
}
|
|
|
1299 |
}
|
|
|
1300 |
}
|
|
|
1301 |
|
|
|
1302 |
/* Instantiate class members */
|
|
|
1303 |
t = DEREF_type ( id_class_name_defn ( tid ) ) ;
|
|
|
1304 |
s = DEREF_type ( ctype_form ( cs ) ) ;
|
|
|
1305 |
COPY_type ( ctype_form ( cs ), t ) ;
|
|
|
1306 |
while ( IS_type_templ ( t ) ) {
|
|
|
1307 |
ci = cinfo_template ;
|
|
|
1308 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1309 |
}
|
|
|
1310 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
1311 |
COPY_type ( ctype_form ( ct ), form ) ;
|
|
|
1312 |
if ( do_dump && created ) {
|
|
|
1313 |
/* Dump template instance information */
|
|
|
1314 |
dump_declare ( tid, &crt_loc, 0 ) ;
|
|
|
1315 |
dump_instance ( tid, form, spec ) ;
|
|
|
1316 |
}
|
|
|
1317 |
copy_members ( ct, cs, ci, def ) ;
|
|
|
1318 |
COPY_type ( ctype_form ( cs ), s ) ;
|
|
|
1319 |
if ( !EQ_type ( spec, form ) ) {
|
|
|
1320 |
/* Reset specialisation parameters */
|
|
|
1321 |
restore_templ_args ( spec, d2 ) ;
|
|
|
1322 |
}
|
|
|
1323 |
|
|
|
1324 |
} else {
|
|
|
1325 |
/* Instantiation depth too great */
|
|
|
1326 |
if ( IS_NULL_id ( tid ) ) tid = rid ;
|
|
|
1327 |
}
|
|
|
1328 |
decr_value ( OPT_VAL_instance_depth ) ;
|
|
|
1329 |
restore_prefix ( perr ) ;
|
|
|
1330 |
DESTROY_ptr ( ploc, SIZE_loc ) ;
|
|
|
1331 |
dump_template-- ;
|
|
|
1332 |
}
|
|
|
1333 |
if ( type ) {
|
|
|
1334 |
/* Check for templates */
|
|
|
1335 |
TYPE t = DEREF_type ( id_class_name_defn ( tid ) ) ;
|
|
|
1336 |
if ( IS_type_templ ( t ) ) tid = NULL_id ;
|
|
|
1337 |
} else {
|
|
|
1338 |
restore_token_args ( pids, d ) ;
|
|
|
1339 |
}
|
|
|
1340 |
return ( tid ) ;
|
|
|
1341 |
}
|
|
|
1342 |
|
|
|
1343 |
|
|
|
1344 |
/*
|
|
|
1345 |
COMPLETE A CLASS DEFINITION
|
|
|
1346 |
|
|
|
1347 |
This routine is called with def true whenever a class type is
|
|
|
1348 |
encountered which is complete but not defined in a context where a
|
|
|
1349 |
complete type is required. If ct is a template class instance then
|
|
|
1350 |
the definition is provided. If def is false then ct is marked as
|
|
|
1351 |
complete if possible.
|
|
|
1352 |
*/
|
|
|
1353 |
|
|
|
1354 |
void complete_class
|
|
|
1355 |
PROTO_N ( ( ct, def ) )
|
|
|
1356 |
PROTO_T ( CLASS_TYPE ct X int def )
|
|
|
1357 |
{
|
|
|
1358 |
CLASS_INFO ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
1359 |
if ( !( ci & cinfo_defined ) ) {
|
|
|
1360 |
IDENTIFIER cid = DEREF_id ( ctype_name ( ct ) ) ;
|
|
|
1361 |
IDENTIFIER sid = match_specialise ( cid, NULL_id ) ;
|
|
|
1362 |
if ( !IS_NULL_id ( sid ) && IS_id_class_name ( sid ) ) {
|
|
|
1363 |
/* Template class instance */
|
|
|
1364 |
CLASS_TYPE cs ;
|
|
|
1365 |
CLASS_INFO cj ;
|
|
|
1366 |
TYPE s = DEREF_type ( id_class_name_defn ( sid ) ) ;
|
|
|
1367 |
while ( IS_type_templ ( s ) ) {
|
|
|
1368 |
s = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
1369 |
}
|
|
|
1370 |
cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
1371 |
if ( !EQ_ctype ( cs, ct ) ) {
|
|
|
1372 |
/* Allow for nested template classes */
|
|
|
1373 |
complete_class ( cs, def ) ;
|
|
|
1374 |
}
|
|
|
1375 |
cj = DEREF_cinfo ( ctype_info ( cs ) ) ;
|
|
|
1376 |
if ( cj & cinfo_complete ) {
|
|
|
1377 |
/* Template class is complete */
|
|
|
1378 |
ci |= cinfo_complete ;
|
|
|
1379 |
COPY_cinfo ( ctype_info ( ct ), ci ) ;
|
|
|
1380 |
if ( def ) {
|
|
|
1381 |
/* Define template class */
|
|
|
1382 |
TYPE form = DEREF_type ( ctype_form ( ct ) ) ;
|
|
|
1383 |
if ( !IS_NULL_type ( form ) ) {
|
|
|
1384 |
if ( IS_type_token ( form ) ) {
|
|
|
1385 |
/* Template instance */
|
|
|
1386 |
IDENTIFIER tid ;
|
|
|
1387 |
LIST ( TOKEN ) args ;
|
|
|
1388 |
tid = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
1389 |
args = DEREF_list ( type_token_args ( form ) ) ;
|
|
|
1390 |
IGNORE instance_type ( tid, args, 0, 1 ) ;
|
|
|
1391 |
} else {
|
|
|
1392 |
/* Nested template class */
|
|
|
1393 |
EXP e ;
|
|
|
1394 |
MAKE_exp_value ( s, e ) ;
|
|
|
1395 |
IGNORE define_templ_member ( cid, sid, form, e ) ;
|
|
|
1396 |
}
|
|
|
1397 |
}
|
|
|
1398 |
}
|
|
|
1399 |
}
|
|
|
1400 |
}
|
|
|
1401 |
}
|
|
|
1402 |
return ;
|
|
|
1403 |
}
|
|
|
1404 |
|
|
|
1405 |
|
|
|
1406 |
/*
|
|
|
1407 |
CHECK THE ARGUMENTS OF A TEMPLATE SPECIALISATION
|
|
|
1408 |
|
|
|
1409 |
This routine checks the template specialisation declared with
|
|
|
1410 |
parameters pids and arguments form.
|
|
|
1411 |
*/
|
|
|
1412 |
|
|
|
1413 |
static void check_spec_args
|
|
|
1414 |
PROTO_N ( ( pids, form ) )
|
|
|
1415 |
PROTO_T ( LIST ( IDENTIFIER ) pids X TYPE form )
|
|
|
1416 |
{
|
|
|
1417 |
LIST ( TOKEN ) args = DEREF_list ( type_token_args ( form ) ) ;
|
|
|
1418 |
while ( !IS_NULL_list ( args ) ) {
|
|
|
1419 |
TOKEN a = DEREF_tok ( HEAD_list ( args ) ) ;
|
|
|
1420 |
if ( IS_tok_exp ( a ) ) {
|
|
|
1421 |
/* Non-type argument */
|
|
|
1422 |
EXP e = DEREF_exp ( tok_exp_value ( a ) ) ;
|
|
|
1423 |
if ( depends_on_exp ( e, pids, 0 ) == 1 ) {
|
|
|
1424 |
report ( crt_loc, ERR_temp_class_spec_depend ( form ) ) ;
|
|
|
1425 |
}
|
|
|
1426 |
}
|
|
|
1427 |
args = TAIL_list ( args ) ;
|
|
|
1428 |
}
|
|
|
1429 |
return ;
|
|
|
1430 |
}
|
|
|
1431 |
|
|
|
1432 |
|
|
|
1433 |
/*
|
|
|
1434 |
CHECK A TEMPLATE SPECIALISATION
|
|
|
1435 |
|
|
|
1436 |
This routine checks the specialisation spec of the template tid.
|
|
|
1437 |
It identifies spec with any previous matching specialisation and
|
|
|
1438 |
returns this previous version. If no such match is found the
|
|
|
1439 |
original instance is returned.
|
|
|
1440 |
*/
|
|
|
1441 |
|
|
|
1442 |
static INSTANCE check_specialise
|
|
|
1443 |
PROTO_N ( ( tid, spec, type ) )
|
|
|
1444 |
PROTO_T ( IDENTIFIER tid X INSTANCE spec X int type )
|
|
|
1445 |
{
|
|
|
1446 |
INSTANCE apps ;
|
|
|
1447 |
ERROR merr = NULL_err ;
|
|
|
1448 |
INSTANCE eq = NULL_inst ;
|
|
|
1449 |
TYPE form = DEREF_type ( inst_form ( spec ) ) ;
|
|
|
1450 |
|
|
|
1451 |
/* Scan through previous instances */
|
|
|
1452 |
force_template++ ;
|
|
|
1453 |
apps = find_templ_apps ( tid ) ;
|
|
|
1454 |
while ( !IS_NULL_inst ( apps ) ) {
|
|
|
1455 |
if ( !EQ_inst ( spec, apps ) ) {
|
|
|
1456 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( apps ) ) ;
|
|
|
1457 |
if ( !( acc & dspec_alias ) ) {
|
|
|
1458 |
/* Compare with previous instance */
|
|
|
1459 |
TYPE prev = DEREF_type ( inst_form ( apps ) ) ;
|
|
|
1460 |
int cmp = eq_type ( form, prev ) ;
|
|
|
1461 |
if ( acc & dspec_main ) {
|
|
|
1462 |
/* Comparison with primary template */
|
|
|
1463 |
if ( cmp == 1 && ( type < 2 && crt_templ_qualifier ) ) {
|
|
|
1464 |
ERROR err = ERR_temp_class_spec_primary ( form ) ;
|
|
|
1465 |
report ( crt_loc, err ) ;
|
|
|
1466 |
crt_templ_qualifier = 0 ;
|
|
|
1467 |
} else if ( cmp == 2 || cmp == 4 ) {
|
|
|
1468 |
ERROR err = ERR_temp_class_spec_primary ( form ) ;
|
|
|
1469 |
report ( crt_loc, err ) ;
|
|
|
1470 |
}
|
|
|
1471 |
}
|
|
|
1472 |
if ( cmp == 2 && ( acc & dspec_instance ) ) {
|
|
|
1473 |
if ( !( acc & dspec_explicit ) && type < 3 ) {
|
|
|
1474 |
/* Specialisation matches previous use */
|
|
|
1475 |
ERROR err = ERR_temp_spec_post ( form, prev ) ;
|
|
|
1476 |
merr = concat_error ( merr, err ) ;
|
|
|
1477 |
}
|
|
|
1478 |
}
|
|
|
1479 |
if ( cmp == 1 ) {
|
|
|
1480 |
/* Equality of template specialisations */
|
|
|
1481 |
eq = apps ;
|
|
|
1482 |
break ;
|
|
|
1483 |
}
|
|
|
1484 |
}
|
|
|
1485 |
}
|
|
|
1486 |
apps = DEREF_inst ( inst_next ( apps ) ) ;
|
|
|
1487 |
}
|
|
|
1488 |
force_template-- ;
|
|
|
1489 |
|
|
|
1490 |
/* Identify equal specialisations */
|
|
|
1491 |
if ( !IS_NULL_inst ( eq ) ) {
|
|
|
1492 |
TYPE prev = DEREF_type ( inst_form ( eq ) ) ;
|
|
|
1493 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
1494 |
acc |= dspec_alias ;
|
|
|
1495 |
COPY_dspec ( inst_templ_access ( spec ), acc ) ;
|
|
|
1496 |
COPY_inst ( inst_alias ( spec ), eq ) ;
|
|
|
1497 |
if ( !IS_NULL_err ( merr ) ) destroy_error ( merr, 1 ) ;
|
|
|
1498 |
|
|
|
1499 |
/* Identify template parameters */
|
|
|
1500 |
if ( IS_type_templ ( form ) && IS_type_templ ( prev ) ) {
|
|
|
1501 |
TOKEN as = DEREF_tok ( type_templ_sort ( form ) ) ;
|
|
|
1502 |
TOKEN at = DEREF_tok ( type_templ_sort ( prev ) ) ;
|
|
|
1503 |
LIST ( IDENTIFIER ) ps = DEREF_list ( tok_templ_pids ( as ) ) ;
|
|
|
1504 |
LIST ( IDENTIFIER ) pt = DEREF_list ( tok_templ_pids ( at ) ) ;
|
|
|
1505 |
IGNORE eq_templ_params ( ps, pt ) ;
|
|
|
1506 |
|
|
|
1507 |
/* Re-check more recent instances */
|
|
|
1508 |
apps = all_instances ;
|
|
|
1509 |
while ( !EQ_inst ( apps, spec ) ) {
|
|
|
1510 |
acc = DEREF_dspec ( inst_templ_access ( apps ) ) ;
|
|
|
1511 |
if ( !( acc & dspec_alias ) ) {
|
|
|
1512 |
IDENTIFIER pid ;
|
|
|
1513 |
prev = DEREF_type ( inst_form ( apps ) ) ;
|
|
|
1514 |
while ( IS_type_templ ( prev ) ) {
|
|
|
1515 |
prev = DEREF_type ( type_templ_defn ( prev ) ) ;
|
|
|
1516 |
}
|
|
|
1517 |
pid = DEREF_id ( type_token_tok ( prev ) ) ;
|
|
|
1518 |
IGNORE check_specialise ( pid, apps, 3 ) ;
|
|
|
1519 |
}
|
|
|
1520 |
apps = DEREF_inst ( inst_templ_prev ( apps ) ) ;
|
|
|
1521 |
}
|
|
|
1522 |
}
|
|
|
1523 |
} else {
|
|
|
1524 |
/* Report matching instances */
|
|
|
1525 |
if ( !IS_NULL_err ( merr ) ) report ( crt_loc, merr ) ;
|
|
|
1526 |
eq = spec ;
|
|
|
1527 |
}
|
|
|
1528 |
return ( eq ) ;
|
|
|
1529 |
}
|
|
|
1530 |
|
|
|
1531 |
|
|
|
1532 |
/*
|
|
|
1533 |
ADJUST THE LINKAGE OF A TEMPLATE FUNCTION
|
|
|
1534 |
|
|
|
1535 |
A specialisation of a template function is inline only if it is
|
|
|
1536 |
explicitly declared to be, independently of whether its function
|
|
|
1537 |
template is. However no storage class specifiers may be given for
|
|
|
1538 |
a specialisation. This routine adjusts the linkage of the template
|
|
|
1539 |
function id of form form declared with declaration specifiers ds.
|
|
|
1540 |
*/
|
|
|
1541 |
|
|
|
1542 |
static void adjust_func_templ
|
|
|
1543 |
PROTO_N ( ( id, ds, form ) )
|
|
|
1544 |
PROTO_T ( IDENTIFIER id X DECL_SPEC ds X TYPE form )
|
|
|
1545 |
{
|
|
|
1546 |
if ( !IS_NULL_type ( form ) ) {
|
|
|
1547 |
DECL_SPEC pds ;
|
|
|
1548 |
int redecl = 0 ;
|
|
|
1549 |
if ( IS_type_token ( form ) ) {
|
|
|
1550 |
INSTANCE app = DEREF_inst ( type_token_app ( form ) ) ;
|
|
|
1551 |
if ( !IS_NULL_inst ( app ) ) {
|
|
|
1552 |
/* Check for redeclarations */
|
|
|
1553 |
DECL_SPEC acc = DEREF_dspec ( inst_templ_access ( app ) ) ;
|
|
|
1554 |
if ( acc & dspec_static ) redecl = 1 ;
|
|
|
1555 |
acc |= dspec_static ;
|
|
|
1556 |
COPY_dspec ( inst_templ_access ( app ), acc ) ;
|
|
|
1557 |
}
|
|
|
1558 |
} else if ( IS_type_instance ( form ) ) {
|
|
|
1559 |
/* Check for redeclarations */
|
|
|
1560 |
DECL_SPEC acc = DEREF_dspec ( type_instance_access ( form ) ) ;
|
|
|
1561 |
if ( acc & dspec_static ) redecl = 1 ;
|
|
|
1562 |
acc |= dspec_static ;
|
|
|
1563 |
COPY_dspec ( type_instance_access ( form ), acc ) ;
|
|
|
1564 |
}
|
|
|
1565 |
if ( !redecl && !IS_NULL_id ( id ) && IS_id_function_etc ( id ) ) {
|
|
|
1566 |
/* Adjust inline specifier */
|
|
|
1567 |
pds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1568 |
pds &= ~dspec_inline ;
|
|
|
1569 |
if ( ds & dspec_inline ) {
|
|
|
1570 |
/* Mark inline functions */
|
|
|
1571 |
pds |= dspec_inline ;
|
|
|
1572 |
}
|
|
|
1573 |
COPY_dspec ( id_storage ( id ), pds ) ;
|
|
|
1574 |
}
|
|
|
1575 |
pds = ( ds & dspec_storage ) ;
|
|
|
1576 |
if ( pds != dspec_none ) {
|
|
|
1577 |
/* Check for storage class specifiers */
|
|
|
1578 |
report ( decl_loc, ERR_dcl_stc_expl_spec ( pds ) ) ;
|
|
|
1579 |
}
|
|
|
1580 |
if ( crt_linkage == dspec_c ) {
|
|
|
1581 |
/* Check for C linkage */
|
|
|
1582 |
report ( decl_loc, ERR_temp_decl_linkage () ) ;
|
|
|
1583 |
}
|
|
|
1584 |
}
|
|
|
1585 |
return ;
|
|
|
1586 |
}
|
|
|
1587 |
|
|
|
1588 |
|
|
|
1589 |
/*
|
|
|
1590 |
EXAMINE A TEMPLATE SPECIALISATION TYPE
|
|
|
1591 |
|
|
|
1592 |
This routine examines the template specialisation t of the given form.
|
|
|
1593 |
expl is true for an explicit specialisation and false for a simple
|
|
|
1594 |
redeclaration. The routine returns 2 if t represents an explicit
|
|
|
1595 |
instantiation, 1 if it represents an explicit specialisation, and 0
|
|
|
1596 |
otherwise.
|
|
|
1597 |
*/
|
|
|
1598 |
|
|
|
1599 |
static int bind_templ_spec
|
|
|
1600 |
PROTO_N ( ( pid, t, form, type, expl ) )
|
|
|
1601 |
PROTO_T ( IDENTIFIER *pid X TYPE t X TYPE form X int type X int expl )
|
|
|
1602 |
{
|
|
|
1603 |
int def = 0 ;
|
|
|
1604 |
if ( expl ) {
|
|
|
1605 |
DECL_SPEC acc ;
|
|
|
1606 |
TOKEN sort = NULL_tok ;
|
|
|
1607 |
NAMESPACE ns = crt_namespace ;
|
|
|
1608 |
LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
|
|
|
1609 |
INSTANCE spec = DEREF_inst ( type_token_app ( form ) ) ;
|
|
|
1610 |
IDENTIFIER tid = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
1611 |
if ( IS_type_templ ( t ) ) {
|
|
|
1612 |
/* Find template information */
|
|
|
1613 |
sort = DEREF_tok ( type_templ_sort ( t ) ) ;
|
|
|
1614 |
pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
1615 |
ns = DEREF_nspace ( tok_templ_pars ( sort ) ) ;
|
|
|
1616 |
}
|
|
|
1617 |
if ( IS_NULL_list ( pids ) ) {
|
|
|
1618 |
if ( IS_NULL_nspace ( ns ) ) {
|
|
|
1619 |
/* Explicit instantiation */
|
|
|
1620 |
acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
1621 |
if ( acc & dspec_register ) {
|
|
|
1622 |
report ( decl_loc, ERR_temp_spec_reinst ( form ) ) ;
|
|
|
1623 |
} else if ( acc & dspec_explicit ) {
|
|
|
1624 |
report ( decl_loc, ERR_temp_spec_redecl ( form ) ) ;
|
|
|
1625 |
}
|
|
|
1626 |
acc |= dspec_register ;
|
|
|
1627 |
COPY_dspec ( inst_templ_access ( spec ), acc ) ;
|
|
|
1628 |
def = ( type == 2 ? 3 : 2 ) ;
|
|
|
1629 |
} else {
|
|
|
1630 |
/* Explicit specialisation */
|
|
|
1631 |
spec = check_specialise ( tid, spec, type ) ;
|
|
|
1632 |
if ( type != 2 ) {
|
|
|
1633 |
acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
1634 |
if ( acc & dspec_register ) {
|
|
|
1635 |
report ( decl_loc, ERR_temp_spec_redecl ( form ) ) ;
|
|
|
1636 |
} else if ( acc & dspec_explicit ) {
|
|
|
1637 |
report ( decl_loc, ERR_temp_spec_respec ( form ) ) ;
|
|
|
1638 |
} else if ( acc & ( dspec_used | dspec_called ) ) {
|
|
|
1639 |
report ( decl_loc, ERR_temp_spec_used ( form ) ) ;
|
|
|
1640 |
}
|
|
|
1641 |
acc |= dspec_explicit ;
|
|
|
1642 |
COPY_dspec ( inst_templ_access ( spec ), acc ) ;
|
|
|
1643 |
}
|
|
|
1644 |
*pid = DEREF_id ( inst_templ_id ( spec ) ) ;
|
|
|
1645 |
def = 1 ;
|
|
|
1646 |
}
|
|
|
1647 |
|
|
|
1648 |
} else {
|
|
|
1649 |
/* Partial specialisation */
|
|
|
1650 |
check_spec_args ( pids, form ) ;
|
|
|
1651 |
if ( check_templ_dargs ( t ) ) {
|
|
|
1652 |
/* Check template default arguments */
|
|
|
1653 |
report ( decl_loc, ERR_temp_class_spec_darg () ) ;
|
|
|
1654 |
}
|
|
|
1655 |
MAKE_type_templ ( cv_none, sort, form, 1, form ) ;
|
|
|
1656 |
COPY_type ( inst_form ( spec ), form ) ;
|
|
|
1657 |
spec = check_specialise ( tid, spec, type ) ;
|
|
|
1658 |
acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
1659 |
acc &= ~dspec_instance ;
|
|
|
1660 |
acc |= dspec_template ;
|
|
|
1661 |
if ( type == 0 && !( acc & dspec_main ) ) {
|
|
|
1662 |
/* Can't partially specialise functions */
|
|
|
1663 |
report ( decl_loc, ERR_temp_decl_func () ) ;
|
|
|
1664 |
}
|
|
|
1665 |
if ( type != 2 ) {
|
|
|
1666 |
if ( acc & dspec_called ) {
|
|
|
1667 |
/* Have specialised members */
|
|
|
1668 |
report ( decl_loc, ERR_temp_spec_used ( form ) ) ;
|
|
|
1669 |
}
|
|
|
1670 |
acc |= dspec_extern ;
|
|
|
1671 |
}
|
|
|
1672 |
COPY_dspec ( inst_templ_access ( spec ), acc ) ;
|
|
|
1673 |
*pid = DEREF_id ( inst_templ_id ( spec ) ) ;
|
|
|
1674 |
}
|
|
|
1675 |
if ( type == 0 && check_func_dargs ( t, 0, 0 ) ) {
|
|
|
1676 |
/* Check function default arguments */
|
|
|
1677 |
report ( decl_loc, ERR_temp_class_spec_darg () ) ;
|
|
|
1678 |
}
|
|
|
1679 |
}
|
|
|
1680 |
return ( def ) ;
|
|
|
1681 |
}
|
|
|
1682 |
|
|
|
1683 |
|
|
|
1684 |
/*
|
|
|
1685 |
TEMPLATE SPECIALISATION FLAG
|
|
|
1686 |
|
|
|
1687 |
This flag is set by bind_specialise to indicate the type of template
|
|
|
1688 |
declaration encountered. The values are as in bind_templ_spec.
|
|
|
1689 |
*/
|
|
|
1690 |
|
|
|
1691 |
int bound_specialise = 0 ;
|
|
|
1692 |
|
|
|
1693 |
|
|
|
1694 |
/*
|
|
|
1695 |
BIND TEMPLATE PARAMETERS IN A TEMPLATE SPECIALISATION
|
|
|
1696 |
|
|
|
1697 |
This routine binds any template parameters in the template
|
|
|
1698 |
specialisation given by the declarator id of type t and declaration
|
|
|
1699 |
specifiers ds. It returns those components of t which bind to the
|
|
|
1700 |
underlying object. For example in 'template < class T > int A < T >::a'
|
|
|
1701 |
the component of the type which binds to 'a' is 'int'. The
|
|
|
1702 |
'template < class T >' component binds to the 'A < T >::' qualifier.
|
|
|
1703 |
Note that this analysis may be done prior to any replacement of
|
|
|
1704 |
inferred types in t.
|
|
|
1705 |
*/
|
|
|
1706 |
|
|
|
1707 |
TYPE bind_specialise
|
|
|
1708 |
PROTO_N ( ( pid, t, ds, type, force, init ) )
|
|
|
1709 |
PROTO_T ( IDENTIFIER *pid X TYPE t X DECL_SPEC ds X
|
|
|
1710 |
int type X int force X int init )
|
|
|
1711 |
{
|
|
|
1712 |
IDENTIFIER id = *pid ;
|
|
|
1713 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
1714 |
DECL_SPEC pds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1715 |
if ( pds & dspec_instance ) {
|
|
|
1716 |
/* Template instance */
|
|
|
1717 |
TYPE f ;
|
|
|
1718 |
int def = 0 ;
|
|
|
1719 |
int undef = 0 ;
|
|
|
1720 |
INSTANCE spec = NULL_inst ;
|
|
|
1721 |
|
|
|
1722 |
/* Examine enclosing class */
|
|
|
1723 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
1724 |
if ( !IS_NULL_nspace ( ns ) && IS_nspace_ctype ( ns ) ) {
|
|
|
1725 |
IDENTIFIER cid = DEREF_id ( nspace_name ( ns ) ) ;
|
|
|
1726 |
IDENTIFIER sid = cid ;
|
|
|
1727 |
t = bind_specialise ( &sid, t, ds, 2, 0, init ) ;
|
|
|
1728 |
if ( !EQ_id ( sid, cid ) ) {
|
|
|
1729 |
/* Changed specialisation */
|
|
|
1730 |
IDENTIFIER qid = id ;
|
|
|
1731 |
id = find_copied_member ( sid, qid, 0, type ) ;
|
|
|
1732 |
if ( type != 2 ) {
|
|
|
1733 |
/* Update namespace stacks */
|
|
|
1734 |
QUALIFIER q = qual_nested ;
|
|
|
1735 |
end_declarator ( qid, 1 ) ;
|
|
|
1736 |
begin_declarator ( id, q, NULL_nspace, 1 ) ;
|
|
|
1737 |
}
|
|
|
1738 |
*pid = id ;
|
|
|
1739 |
}
|
|
|
1740 |
f = find_form ( sid, &undef ) ;
|
|
|
1741 |
if ( !IS_NULL_type ( f ) && IS_type_token ( f ) ) {
|
|
|
1742 |
spec = DEREF_inst ( type_token_app ( f ) ) ;
|
|
|
1743 |
}
|
|
|
1744 |
}
|
|
|
1745 |
|
|
|
1746 |
/* Select overloaded function */
|
|
|
1747 |
if ( type == 0 && IS_id_function_etc ( id ) ) {
|
|
|
1748 |
TYPE fn = t ;
|
|
|
1749 |
if ( !IS_NULL_type ( fn ) ) {
|
|
|
1750 |
TYPE ret ;
|
|
|
1751 |
int eq = 0 ;
|
|
|
1752 |
IDENTIFIER fid ;
|
|
|
1753 |
LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
|
|
|
1754 |
if ( IS_type_templ ( fn ) ) {
|
|
|
1755 |
fn = DEREF_type ( type_templ_defn ( fn ) ) ;
|
|
|
1756 |
}
|
|
|
1757 |
ret = inferred_return ( fn, id ) ;
|
|
|
1758 |
fid = resolve_func ( id, fn, 1, 0, pids, &eq ) ;
|
|
|
1759 |
if ( IS_NULL_id ( fid ) ) {
|
|
|
1760 |
/* No match found */
|
|
|
1761 |
report ( decl_loc, ERR_temp_spec_type ( fn, id ) ) ;
|
|
|
1762 |
} else if ( IS_id_ambig ( fid ) ) {
|
|
|
1763 |
/* More than one match found */
|
|
|
1764 |
IGNORE report_ambiguous ( fid, 0, 0, 0 ) ;
|
|
|
1765 |
fid = NULL_id ;
|
|
|
1766 |
}
|
|
|
1767 |
if ( !IS_NULL_type ( ret ) ) {
|
|
|
1768 |
/* Restore return type */
|
|
|
1769 |
COPY_type ( type_func_ret ( fn ), ret ) ;
|
|
|
1770 |
}
|
|
|
1771 |
*pid = fid ;
|
|
|
1772 |
id = fid ;
|
|
|
1773 |
}
|
|
|
1774 |
}
|
|
|
1775 |
|
|
|
1776 |
/* Examine template instance */
|
|
|
1777 |
f = find_form ( id, &undef ) ;
|
|
|
1778 |
if ( !IS_NULL_type ( f ) && IS_type_token ( f ) ) {
|
|
|
1779 |
IDENTIFIER tid = DEREF_id ( type_token_tok ( f ) ) ;
|
|
|
1780 |
unsigned tag = TAG_id ( tid ) ;
|
|
|
1781 |
if ( tag != id_token_tag ) {
|
|
|
1782 |
/* Examine template qualifiers */
|
|
|
1783 |
if ( !IS_NULL_type ( t ) && IS_type_templ ( t ) ) {
|
|
|
1784 |
def = bind_templ_spec ( &id, t, f, type, 1 ) ;
|
|
|
1785 |
if ( def == 1 || def == 2 ) {
|
|
|
1786 |
/* Explicit specialisations */
|
|
|
1787 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1788 |
} else if ( def == 0 ) {
|
|
|
1789 |
/* Partial specialisations */
|
|
|
1790 |
if ( type == 2 || crt_templ_qualifier ) {
|
|
|
1791 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1792 |
}
|
|
|
1793 |
}
|
|
|
1794 |
} else {
|
|
|
1795 |
int expl = 0 ;
|
|
|
1796 |
TYPE s = type_error ;
|
|
|
1797 |
if ( !( ds & dspec_friend ) ) {
|
|
|
1798 |
/* A friend declaration is allowed */
|
|
|
1799 |
report ( decl_loc, ERR_temp_spec_prefix () ) ;
|
|
|
1800 |
expl = 1 ;
|
|
|
1801 |
}
|
|
|
1802 |
def = bind_templ_spec ( &id, s, f, type, expl ) ;
|
|
|
1803 |
}
|
|
|
1804 |
if ( tag == id_class_name_tag ) {
|
|
|
1805 |
if ( type == 0 ) {
|
|
|
1806 |
report ( decl_loc, ERR_temp_spec_bad ( f ) ) ;
|
|
|
1807 |
id = NULL_id ;
|
|
|
1808 |
}
|
|
|
1809 |
} else {
|
|
|
1810 |
if ( type ) {
|
|
|
1811 |
report ( decl_loc, ERR_temp_spec_bad ( f ) ) ;
|
|
|
1812 |
id = NULL_id ;
|
|
|
1813 |
} else {
|
|
|
1814 |
}
|
|
|
1815 |
}
|
|
|
1816 |
bound_specialise = def ;
|
|
|
1817 |
*pid = id ;
|
|
|
1818 |
}
|
|
|
1819 |
} else {
|
|
|
1820 |
/* Check for explicit instantiations */
|
|
|
1821 |
if ( !IS_NULL_type ( t ) && IS_type_templ ( t ) ) {
|
|
|
1822 |
TOKEN sort = DEREF_tok ( type_templ_sort ( t ) ) ;
|
|
|
1823 |
NAMESPACE pns = DEREF_nspace ( tok_templ_pars ( sort ) ) ;
|
|
|
1824 |
if ( IS_NULL_nspace ( pns ) ) {
|
|
|
1825 |
if ( !IS_NULL_type ( f ) && IS_type_instance ( f ) ) {
|
|
|
1826 |
def = ( type == 2 ? 3 : 2 ) ;
|
|
|
1827 |
} else {
|
|
|
1828 |
report ( decl_loc, ERR_temp_explicit_templ () ) ;
|
|
|
1829 |
}
|
|
|
1830 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1831 |
bound_specialise = def ;
|
|
|
1832 |
}
|
|
|
1833 |
}
|
|
|
1834 |
}
|
|
|
1835 |
|
|
|
1836 |
/* Adjust function linkage */
|
|
|
1837 |
if ( !type ) adjust_func_templ ( id, ds, f ) ;
|
|
|
1838 |
|
|
|
1839 |
/* Record member specialisations */
|
|
|
1840 |
if ( !IS_NULL_inst ( spec ) ) {
|
|
|
1841 |
DECL_SPEC acc ;
|
|
|
1842 |
LIST ( IDENTIFIER ) mems ;
|
|
|
1843 |
if ( def == 0 || def == 1 ) {
|
|
|
1844 |
if ( !IS_NULL_type ( f ) && IS_type_instance ( f ) ) {
|
|
|
1845 |
IDENTIFIER mid = DEREF_id ( type_instance_id ( f ) ) ;
|
|
|
1846 |
mems = DEREF_list ( inst_templ_mems ( spec ) ) ;
|
|
|
1847 |
CONS_id ( mid, mems, mems ) ;
|
|
|
1848 |
COPY_list ( inst_templ_mems ( spec ), mems ) ;
|
|
|
1849 |
}
|
|
|
1850 |
}
|
|
|
1851 |
acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
1852 |
acc |= dspec_called ;
|
|
|
1853 |
COPY_dspec ( inst_templ_access ( spec ), acc ) ;
|
|
|
1854 |
}
|
|
|
1855 |
|
|
|
1856 |
/* Mark explicit specialisations */
|
|
|
1857 |
if ( def == 1 && !IS_NULL_id ( id ) ) {
|
|
|
1858 |
if ( type != 2 ) {
|
|
|
1859 |
/* Explicit specialisations are exported */
|
|
|
1860 |
export_template ( id, 1 ) ;
|
|
|
1861 |
}
|
|
|
1862 |
}
|
|
|
1863 |
|
|
|
1864 |
/* Mark explicit instantiations */
|
|
|
1865 |
if ( def == 2 && !IS_NULL_id ( id ) ) {
|
|
|
1866 |
if ( force == 2 ) {
|
|
|
1867 |
/* template-id required in instantiation */
|
|
|
1868 |
ERROR err = ERR_temp_explicit_id ( id ) ;
|
|
|
1869 |
report ( decl_loc, err ) ;
|
|
|
1870 |
}
|
|
|
1871 |
if ( init ) {
|
|
|
1872 |
/* Can't have definition as well */
|
|
|
1873 |
report ( decl_loc, ERR_temp_explicit_def () ) ;
|
|
|
1874 |
}
|
|
|
1875 |
define_template ( id, 1 ) ;
|
|
|
1876 |
}
|
|
|
1877 |
|
|
|
1878 |
} else if ( force ) {
|
|
|
1879 |
/* Not a template instance */
|
|
|
1880 |
if ( pds & dspec_template ) {
|
|
|
1881 |
if ( IS_id_function_etc ( id ) ) {
|
|
|
1882 |
/* Template function */
|
|
|
1883 |
allow_templ_dargs = 0 ;
|
|
|
1884 |
*pid = parse_id_template ( id, NIL ( PPTOKEN ), 0 ) ;
|
|
|
1885 |
allow_templ_dargs = 1 ;
|
|
|
1886 |
crt_templ_qualifier = 1 ;
|
|
|
1887 |
t = bind_specialise ( pid, t, ds, type, 2, init ) ;
|
|
|
1888 |
} else {
|
|
|
1889 |
/* Template class */
|
|
|
1890 |
report ( decl_loc, ERR_temp_param_none ( id ) ) ;
|
|
|
1891 |
*pid = NULL_id ;
|
|
|
1892 |
}
|
|
|
1893 |
} else {
|
|
|
1894 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
1895 |
if ( !IS_NULL_nspace ( ns ) && IS_nspace_ctype ( ns ) ) {
|
|
|
1896 |
IDENTIFIER cid = DEREF_id ( nspace_name ( ns ) ) ;
|
|
|
1897 |
IDENTIFIER sid = cid ;
|
|
|
1898 |
t = bind_specialise ( &sid, t, ds, 2, 0, init ) ;
|
|
|
1899 |
if ( !EQ_id ( sid, cid ) ) {
|
|
|
1900 |
/* Changed specialisation */
|
|
|
1901 |
IDENTIFIER qid = id ;
|
|
|
1902 |
id = find_copied_member ( sid, qid, 0, type ) ;
|
|
|
1903 |
if ( type != 2 ) {
|
|
|
1904 |
/* Update namespace stacks */
|
|
|
1905 |
QUALIFIER q = qual_nested ;
|
|
|
1906 |
end_declarator ( qid, 1 ) ;
|
|
|
1907 |
begin_declarator ( id, q, NULL_nspace, 1 ) ;
|
|
|
1908 |
}
|
|
|
1909 |
*pid = id ;
|
|
|
1910 |
}
|
|
|
1911 |
}
|
|
|
1912 |
if ( IS_type_templ ( t ) ) {
|
|
|
1913 |
/* Invalid template declaration */
|
|
|
1914 |
id = underlying_id ( id ) ;
|
|
|
1915 |
report ( decl_loc, ERR_temp_param_none ( id ) ) ;
|
|
|
1916 |
*pid = NULL_id ;
|
|
|
1917 |
}
|
|
|
1918 |
}
|
|
|
1919 |
}
|
|
|
1920 |
}
|
|
|
1921 |
return ( t ) ;
|
|
|
1922 |
}
|
|
|
1923 |
|
|
|
1924 |
|
|
|
1925 |
/*
|
|
|
1926 |
SYNTHESISE A LIST OF ARGUMENTS FOR A FUNCTION
|
|
|
1927 |
|
|
|
1928 |
This routine synthesises a list of dummy arguments for the function
|
|
|
1929 |
template id.
|
|
|
1930 |
*/
|
|
|
1931 |
|
|
|
1932 |
static LIST ( EXP ) synthesise_args
|
|
|
1933 |
PROTO_N ( ( id ) )
|
|
|
1934 |
PROTO_T ( IDENTIFIER id )
|
|
|
1935 |
{
|
|
|
1936 |
LIST ( TYPE ) pars ;
|
|
|
1937 |
LIST ( EXP ) args = NULL_list ( EXP ) ;
|
|
|
1938 |
TYPE fn = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
1939 |
while ( IS_type_templ ( fn ) ) {
|
|
|
1940 |
fn = DEREF_type ( type_templ_defn ( fn ) ) ;
|
|
|
1941 |
}
|
|
|
1942 |
pars = DEREF_list ( type_func_mtypes ( fn ) ) ;
|
|
|
1943 |
while ( !IS_NULL_list ( pars ) ) {
|
|
|
1944 |
EXP a ;
|
|
|
1945 |
TYPE t = DEREF_type ( HEAD_list ( pars ) ) ;
|
|
|
1946 |
if ( IS_type_ref ( t ) ) {
|
|
|
1947 |
/* Do reference conversions */
|
|
|
1948 |
t = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
1949 |
}
|
|
|
1950 |
MAKE_exp_value ( t, a ) ;
|
|
|
1951 |
CONS_exp ( a, args, args ) ;
|
|
|
1952 |
pars = TAIL_list ( pars ) ;
|
|
|
1953 |
}
|
|
|
1954 |
return ( REVERSE_list ( args ) ) ;
|
|
|
1955 |
}
|
|
|
1956 |
|
|
|
1957 |
|
|
|
1958 |
/*
|
|
|
1959 |
FIND THE MORE SPECIALISED OF TWO FUNCTION TEMPLATES
|
|
|
1960 |
|
|
|
1961 |
This routine compares the function templates tid and sid. It returns
|
|
|
1962 |
1 if tid is more specialised than sid, 2 if sid is more specialised,
|
|
|
1963 |
and 0 otherwise.
|
|
|
1964 |
*/
|
|
|
1965 |
|
|
|
1966 |
int compare_specs
|
|
|
1967 |
PROTO_N ( ( tid, sid ) )
|
|
|
1968 |
PROTO_T ( IDENTIFIER tid X IDENTIFIER sid )
|
|
|
1969 |
{
|
|
|
1970 |
if ( !EQ_id ( tid, sid ) ) {
|
|
|
1971 |
IDENTIFIER ds, dt ;
|
|
|
1972 |
LIST ( EXP ) args ;
|
|
|
1973 |
ERROR err = NULL_err ;
|
|
|
1974 |
args = synthesise_args ( sid ) ;
|
|
|
1975 |
ds = deduce_args ( tid, args, 0, 0, 0, &err ) ;
|
|
|
1976 |
free_exp_list ( args, 1 ) ;
|
|
|
1977 |
args = synthesise_args ( tid ) ;
|
|
|
1978 |
dt = deduce_args ( sid, args, 0, 0, 0, &err ) ;
|
|
|
1979 |
free_exp_list ( args, 1 ) ;
|
|
|
1980 |
if ( !IS_NULL_err ( err ) ) destroy_error ( err, 1 ) ;
|
|
|
1981 |
if ( !IS_NULL_id ( ds ) ) {
|
|
|
1982 |
if ( IS_NULL_id ( dt ) ) return ( 2 ) ;
|
|
|
1983 |
} else {
|
|
|
1984 |
if ( !IS_NULL_id ( dt ) ) return ( 1 ) ;
|
|
|
1985 |
}
|
|
|
1986 |
}
|
|
|
1987 |
return ( 0 ) ;
|
|
|
1988 |
}
|
|
|
1989 |
|
|
|
1990 |
|
|
|
1991 |
/*
|
|
|
1992 |
CHECK A TEMPLATE FUNCTION DECLARATION
|
|
|
1993 |
|
|
|
1994 |
This routine checks the declaration of the function id which is
|
|
|
1995 |
either a template function itself or overloads a template function.
|
|
|
1996 |
*/
|
|
|
1997 |
|
|
|
1998 |
void templ_func_decl
|
|
|
1999 |
PROTO_N ( ( id ) )
|
|
|
2000 |
PROTO_T ( IDENTIFIER id )
|
|
|
2001 |
{
|
|
|
2002 |
while ( !IS_NULL_id ( id ) ) {
|
|
|
2003 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2004 |
ds |= dspec_template ;
|
|
|
2005 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2006 |
id = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
2007 |
}
|
|
|
2008 |
return ;
|
|
|
2009 |
}
|
|
|
2010 |
|
|
|
2011 |
|
|
|
2012 |
/*
|
|
|
2013 |
LIST OF TEMPLATES FOR DEFINITION
|
|
|
2014 |
|
|
|
2015 |
The variable pending_templates holds a list of all the template
|
|
|
2016 |
instances which should be defined at the next available opportunity.
|
|
|
2017 |
The variable still_pending_templates holds a list of all those
|
|
|
2018 |
instances which should be defined if the corresponding template
|
|
|
2019 |
is defined at some later stage.
|
|
|
2020 |
*/
|
|
|
2021 |
|
|
|
2022 |
LIST ( IDENTIFIER ) pending_templates = NULL_list ( IDENTIFIER ) ;
|
|
|
2023 |
LIST ( IDENTIFIER ) still_pending_templates = NULL_list ( IDENTIFIER ) ;
|
|
|
2024 |
|
|
|
2025 |
|
|
|
2026 |
/*
|
|
|
2027 |
MARK ALL MEMBERS OF A TEMPLATE CLASS FOR DEFINITION
|
|
|
2028 |
|
|
|
2029 |
This routine adds all members of the template class ct to the list of
|
|
|
2030 |
templates to be defined.
|
|
|
2031 |
*/
|
|
|
2032 |
|
|
|
2033 |
static void define_members
|
|
|
2034 |
PROTO_N ( ( ct ) )
|
|
|
2035 |
PROTO_T ( CLASS_TYPE ct )
|
|
|
2036 |
{
|
|
|
2037 |
TYPE form = DEREF_type ( ctype_form ( ct ) ) ;
|
|
|
2038 |
if ( !IS_NULL_type ( form ) ) {
|
|
|
2039 |
NAMESPACE ns = DEREF_nspace ( ctype_member ( ct ) ) ;
|
|
|
2040 |
MEMBER mem = DEREF_member ( nspace_ctype_first ( ns ) ) ;
|
|
|
2041 |
GRAPH gr = DEREF_graph ( ctype_base ( ct ) ) ;
|
|
|
2042 |
LIST ( GRAPH ) br = DEREF_list ( graph_tails ( gr ) ) ;
|
|
|
2043 |
while ( !IS_NULL_list ( br ) ) {
|
|
|
2044 |
/* Scan through base classes */
|
|
|
2045 |
GRAPH gs = DEREF_graph ( HEAD_list ( br ) ) ;
|
|
|
2046 |
CLASS_TYPE cs = DEREF_ctype ( graph_head ( gs ) ) ;
|
|
|
2047 |
define_members ( cs ) ;
|
|
|
2048 |
br = TAIL_list ( br ) ;
|
|
|
2049 |
}
|
|
|
2050 |
while ( !IS_NULL_member ( mem ) ) {
|
|
|
2051 |
/* Scan through class members */
|
|
|
2052 |
IDENTIFIER id = DEREF_id ( member_id ( mem ) ) ;
|
|
|
2053 |
IDENTIFIER alt = DEREF_id ( member_alt ( mem ) ) ;
|
|
|
2054 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
2055 |
define_template ( id, 1 ) ;
|
|
|
2056 |
}
|
|
|
2057 |
if ( !IS_NULL_id ( alt ) && !EQ_id ( id, alt ) ) {
|
|
|
2058 |
define_template ( alt, 2 ) ;
|
|
|
2059 |
}
|
|
|
2060 |
mem = DEREF_member ( member_next ( mem ) ) ;
|
|
|
2061 |
}
|
|
|
2062 |
}
|
|
|
2063 |
return ;
|
|
|
2064 |
}
|
|
|
2065 |
|
|
|
2066 |
|
|
|
2067 |
/*
|
|
|
2068 |
MARK A TEMPLATE FOR DEFINITION
|
|
|
2069 |
|
|
|
2070 |
This routine adds the template instance id to the list of templates
|
|
|
2071 |
to be defined. The identifier is marked as defined even though the
|
|
|
2072 |
actual definition occurs later. Explicit instantiations are indicated
|
|
|
2073 |
by expl being true.
|
|
|
2074 |
*/
|
|
|
2075 |
|
|
|
2076 |
void define_template
|
|
|
2077 |
PROTO_N ( ( id, expl ) )
|
|
|
2078 |
PROTO_T ( IDENTIFIER id X int expl )
|
|
|
2079 |
{
|
|
|
2080 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2081 |
if ( ds & dspec_inherit ) {
|
|
|
2082 |
/* Inherited functions */
|
|
|
2083 |
id = DEREF_id ( id_alias ( id ) ) ;
|
|
|
2084 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2085 |
}
|
|
|
2086 |
if ( ( ds & dspec_instance ) && !( ds & dspec_implicit ) ) {
|
|
|
2087 |
if ( dependent_id ( id ) ) {
|
|
|
2088 |
/* Ignore template dependent instantiations */
|
|
|
2089 |
return ;
|
|
|
2090 |
}
|
|
|
2091 |
switch ( TAG_id ( id ) ) {
|
|
|
2092 |
case id_class_name_tag :
|
|
|
2093 |
case id_class_alias_tag : {
|
|
|
2094 |
if ( expl ) {
|
|
|
2095 |
TYPE t = DEREF_type ( id_class_name_etc_defn ( id ) ) ;
|
|
|
2096 |
if ( IS_type_compound ( t ) ) {
|
|
|
2097 |
/* Define all template members */
|
|
|
2098 |
ERROR err = check_incomplete ( t ) ;
|
|
|
2099 |
if ( IS_NULL_err ( err ) ) {
|
|
|
2100 |
CLASS_TYPE ct ;
|
|
|
2101 |
NAMESPACE ns = DEREF_nspace ( id_parent ( id ) ) ;
|
|
|
2102 |
check_decl_nspace ( id, ns, 1, crt_namespace ) ;
|
|
|
2103 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
2104 |
define_members ( ct ) ;
|
|
|
2105 |
} else {
|
|
|
2106 |
ERROR err2 = ERR_temp_explicit_incompl () ;
|
|
|
2107 |
err = concat_error ( err, err2 ) ;
|
|
|
2108 |
report ( crt_loc, err ) ;
|
|
|
2109 |
}
|
|
|
2110 |
}
|
|
|
2111 |
}
|
|
|
2112 |
break ;
|
|
|
2113 |
}
|
|
|
2114 |
case id_function_tag :
|
|
|
2115 |
case id_mem_func_tag :
|
|
|
2116 |
case id_stat_mem_func_tag : {
|
|
|
2117 |
/* Template functions */
|
|
|
2118 |
if ( !( ds & dspec_defn ) ) {
|
|
|
2119 |
CONS_id ( id, pending_templates, pending_templates ) ;
|
|
|
2120 |
COPY_dspec ( id_storage ( id ), ( ds | dspec_defn ) ) ;
|
|
|
2121 |
COPY_loc ( id_loc ( id ), crt_loc ) ;
|
|
|
2122 |
}
|
|
|
2123 |
if ( expl == 2 ) {
|
|
|
2124 |
/* Allow for overloaded functions */
|
|
|
2125 |
id = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
2126 |
if ( !IS_NULL_id ( id ) ) define_template ( id, 2 ) ;
|
|
|
2127 |
}
|
|
|
2128 |
break ;
|
|
|
2129 |
}
|
|
|
2130 |
case id_stat_member_tag : {
|
|
|
2131 |
/* Static data members of class templates */
|
|
|
2132 |
if ( !( ds & dspec_defn ) ) {
|
|
|
2133 |
TYPE t = DEREF_type ( id_stat_member_type ( id ) ) ;
|
|
|
2134 |
CV_SPEC cv = DEREF_cv ( type_qual ( t ) ) ;
|
|
|
2135 |
COPY_dspec ( id_storage ( id ), ( ds | dspec_defn ) ) ;
|
|
|
2136 |
COPY_loc ( id_loc ( id ), crt_loc ) ;
|
|
|
2137 |
CONS_id ( id, pending_templates, pending_templates ) ;
|
|
|
2138 |
if ( cv == ( cv_lvalue | cv_const ) ) {
|
|
|
2139 |
copy_template ( id, 2 ) ;
|
|
|
2140 |
}
|
|
|
2141 |
}
|
|
|
2142 |
break ;
|
|
|
2143 |
}
|
|
|
2144 |
}
|
|
|
2145 |
}
|
|
|
2146 |
return ;
|
|
|
2147 |
}
|
|
|
2148 |
|
|
|
2149 |
|
|
|
2150 |
/*
|
|
|
2151 |
BIND TEMPLATE ARGUMENTS AND DEFINE A TEMPLATE
|
|
|
2152 |
|
|
|
2153 |
This routine binds the template arguments for the identifier tid to
|
|
|
2154 |
the specialisation sid and then defines id to be e. It returns false
|
|
|
2155 |
if any template argument depends on an unbound template parameter.
|
|
|
2156 |
*/
|
|
|
2157 |
|
|
|
2158 |
static int bind_template
|
|
|
2159 |
PROTO_N ( ( tid, id, sid, e, bound ) )
|
|
|
2160 |
PROTO_T ( IDENTIFIER tid X IDENTIFIER id X IDENTIFIER sid X
|
|
|
2161 |
EXP e X int bound )
|
|
|
2162 |
{
|
|
|
2163 |
if ( IS_NULL_id ( tid ) ) {
|
|
|
2164 |
/* Binding complete - copy definition */
|
|
|
2165 |
if ( !bound ) {
|
|
|
2166 |
/* Suppress output of object definition */
|
|
|
2167 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2168 |
COPY_dspec ( id_storage ( id ), ( ds | dspec_done ) ) ;
|
|
|
2169 |
}
|
|
|
2170 |
copy_object ( id, e ) ;
|
|
|
2171 |
|
|
|
2172 |
} else {
|
|
|
2173 |
/* Examine parent namespace */
|
|
|
2174 |
TYPE p, q ;
|
|
|
2175 |
int undef = 0 ;
|
|
|
2176 |
IDENTIFIER pid = NULL_id ;
|
|
|
2177 |
IDENTIFIER qid = NULL_id ;
|
|
|
2178 |
NAMESPACE pns = DEREF_nspace ( id_parent ( tid ) ) ;
|
|
|
2179 |
NAMESPACE qns = DEREF_nspace ( id_parent ( sid ) ) ;
|
|
|
2180 |
if ( !IS_NULL_nspace ( pns ) ) {
|
|
|
2181 |
switch ( TAG_nspace ( pns ) ) {
|
|
|
2182 |
case nspace_block_tag :
|
|
|
2183 |
case nspace_param_tag :
|
|
|
2184 |
case nspace_dummy_tag :
|
|
|
2185 |
case nspace_ctype_tag : {
|
|
|
2186 |
/* Find enclosing class or function */
|
|
|
2187 |
pid = DEREF_id ( nspace_name ( pns ) ) ;
|
|
|
2188 |
qid = DEREF_id ( nspace_name ( qns ) ) ;
|
|
|
2189 |
break ;
|
|
|
2190 |
}
|
|
|
2191 |
}
|
|
|
2192 |
}
|
|
|
2193 |
|
|
|
2194 |
/* Bind template arguments */
|
|
|
2195 |
p = find_form ( tid, &undef ) ;
|
|
|
2196 |
q = find_form ( sid, &undef ) ;
|
|
|
2197 |
if ( !IS_NULL_type ( p ) && IS_type_token ( p ) ) {
|
|
|
2198 |
/* Template application found */
|
|
|
2199 |
TYPE s = NULL_type ;
|
|
|
2200 |
IDENTIFIER rid = NULL_id ;
|
|
|
2201 |
DECL_SPEC acc = dspec_none ;
|
|
|
2202 |
if ( !IS_NULL_type ( q ) && IS_type_token ( q ) ) {
|
|
|
2203 |
/* Check for specialised template */
|
|
|
2204 |
INSTANCE spec = DEREF_inst ( type_token_app ( q ) ) ;
|
|
|
2205 |
s = DEREF_type ( inst_form ( spec ) ) ;
|
|
|
2206 |
rid = DEREF_id ( inst_templ_id ( spec ) ) ;
|
|
|
2207 |
acc = DEREF_dspec ( inst_templ_access ( spec ) ) ;
|
|
|
2208 |
}
|
|
|
2209 |
if ( !( acc & dspec_template ) ) {
|
|
|
2210 |
/* Not specialised - use primary template */
|
|
|
2211 |
rid = DEREF_id ( type_token_tok ( p ) ) ;
|
|
|
2212 |
if ( IS_id_class_name ( rid ) ) {
|
|
|
2213 |
s = DEREF_type ( id_class_name_defn ( rid ) ) ;
|
|
|
2214 |
} else {
|
|
|
2215 |
s = DEREF_type ( id_function_etc_type ( rid ) ) ;
|
|
|
2216 |
}
|
|
|
2217 |
acc = dspec_main ;
|
|
|
2218 |
}
|
|
|
2219 |
if ( IS_type_templ ( s ) ) {
|
|
|
2220 |
/* Bind template parameters */
|
|
|
2221 |
int d ;
|
|
|
2222 |
LIST ( TOKEN ) args ;
|
|
|
2223 |
LIST ( IDENTIFIER ) pids ;
|
|
|
2224 |
TOKEN sort = DEREF_tok ( type_templ_sort ( s ) ) ;
|
|
|
2225 |
pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
2226 |
if ( acc & dspec_main ) {
|
|
|
2227 |
/* Bound to primary template */
|
|
|
2228 |
args = DEREF_list ( type_token_args ( p ) ) ;
|
|
|
2229 |
} else {
|
|
|
2230 |
/* Bound to template specialisation */
|
|
|
2231 |
args = NULL_list ( TOKEN ) ;
|
|
|
2232 |
}
|
|
|
2233 |
d = save_token_args ( pids, args ) ;
|
|
|
2234 |
if ( IS_NULL_list ( args ) ) {
|
|
|
2235 |
force_template++ ;
|
|
|
2236 |
s = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
2237 |
if ( !eq_type ( s, p ) ) {
|
|
|
2238 |
FAIL ( bind_template failed ) ;
|
|
|
2239 |
bound = 0 ;
|
|
|
2240 |
}
|
|
|
2241 |
force_template-- ;
|
|
|
2242 |
}
|
|
|
2243 |
|
|
|
2244 |
/* Bind parent templates */
|
|
|
2245 |
if ( is_templ_depend ( p ) ) bound = 0 ;
|
|
|
2246 |
if ( IS_id_class_name ( rid ) ) {
|
|
|
2247 |
TYPE t ;
|
|
|
2248 |
CLASS_TYPE cs ;
|
|
|
2249 |
s = DEREF_type ( id_class_name_defn ( rid ) ) ;
|
|
|
2250 |
while ( IS_type_templ ( s ) ) {
|
|
|
2251 |
s = DEREF_type ( type_templ_defn ( s ) ) ;
|
|
|
2252 |
}
|
|
|
2253 |
cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
2254 |
s = DEREF_type ( ctype_form ( cs ) ) ;
|
|
|
2255 |
t = DEREF_type ( id_class_name_defn ( tid ) ) ;
|
|
|
2256 |
COPY_type ( ctype_form ( cs ), t ) ;
|
|
|
2257 |
bound = bind_template ( pid, id, qid, e, bound ) ;
|
|
|
2258 |
COPY_type ( ctype_form ( cs ), s ) ;
|
|
|
2259 |
} else {
|
|
|
2260 |
bound = bind_template ( pid, id, qid, e, bound ) ;
|
|
|
2261 |
}
|
|
|
2262 |
restore_token_args ( pids, d ) ;
|
|
|
2263 |
|
|
|
2264 |
} else {
|
|
|
2265 |
/* Explicit specialisation */
|
|
|
2266 |
bound = 0 ;
|
|
|
2267 |
}
|
|
|
2268 |
|
|
|
2269 |
} else {
|
|
|
2270 |
/* Bind parent templates */
|
|
|
2271 |
bound = bind_template ( pid, id, qid, e, bound ) ;
|
|
|
2272 |
}
|
|
|
2273 |
}
|
|
|
2274 |
return ( bound ) ;
|
|
|
2275 |
}
|
|
|
2276 |
|
|
|
2277 |
|
|
|
2278 |
/*
|
|
|
2279 |
DEFINE A TEMPLATE MEMBER
|
|
|
2280 |
|
|
|
2281 |
This routine defines the template member id given by form to be the
|
|
|
2282 |
specialisation tid of value e. It returns the declaration specifiers
|
|
|
2283 |
of the result.
|
|
|
2284 |
*/
|
|
|
2285 |
|
|
|
2286 |
DECL_SPEC define_templ_member
|
|
|
2287 |
PROTO_N ( ( id, tid, form, e ) )
|
|
|
2288 |
PROTO_T ( IDENTIFIER id X IDENTIFIER tid X TYPE form X EXP e )
|
|
|
2289 |
{
|
|
|
2290 |
ERROR perr ;
|
|
|
2291 |
DECL_SPEC ds ;
|
|
|
2292 |
PTR ( LOCATION ) ploc ;
|
|
|
2293 |
dump_template++ ;
|
|
|
2294 |
report_instance ( form ) ;
|
|
|
2295 |
ploc = MAKE_ptr ( SIZE_loc ) ;
|
|
|
2296 |
COPY_loc ( ploc, crt_loc ) ;
|
|
|
2297 |
perr = set_prefix ( ERR_temp_inst_comment ( form, ploc ) ) ;
|
|
|
2298 |
if ( incr_value ( OPT_VAL_instance_depth ) ) {
|
|
|
2299 |
/* Bind template arguments and copy function */
|
|
|
2300 |
LOCATION loc ;
|
|
|
2301 |
loc = crt_loc ;
|
|
|
2302 |
bad_crt_loc++ ;
|
|
|
2303 |
DEREF_loc ( id_loc ( tid ), crt_loc ) ;
|
|
|
2304 |
IGNORE bind_template ( id, id, tid, e, 1 ) ;
|
|
|
2305 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2306 |
clear_templates ( 0 ) ;
|
|
|
2307 |
crt_loc = loc ;
|
|
|
2308 |
bad_crt_loc-- ;
|
|
|
2309 |
} else {
|
|
|
2310 |
/* Instantiation depth too great */
|
|
|
2311 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2312 |
}
|
|
|
2313 |
decr_value ( OPT_VAL_instance_depth ) ;
|
|
|
2314 |
restore_prefix ( perr ) ;
|
|
|
2315 |
DESTROY_ptr ( ploc, SIZE_loc ) ;
|
|
|
2316 |
dump_template-- ;
|
|
|
2317 |
return ( ds ) ;
|
|
|
2318 |
}
|
|
|
2319 |
|
|
|
2320 |
|
|
|
2321 |
/*
|
|
|
2322 |
DEFINE A TEMPLATE
|
|
|
2323 |
|
|
|
2324 |
This routine defines the template application id. force is true to
|
|
|
2325 |
indicate the end of the translation unit when a non-exported template
|
|
|
2326 |
should have been defined.
|
|
|
2327 |
*/
|
|
|
2328 |
|
|
|
2329 |
static void copy_template
|
|
|
2330 |
PROTO_N ( ( id, force ) )
|
|
|
2331 |
PROTO_T ( IDENTIFIER id X int force )
|
|
|
2332 |
{
|
|
|
2333 |
/* Find the template information */
|
|
|
2334 |
EXP e = NULL_exp ;
|
|
|
2335 |
TYPE form = NULL_type ;
|
|
|
2336 |
IDENTIFIER tid = NULL_id ;
|
|
|
2337 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2338 |
switch ( TAG_id ( id ) ) {
|
|
|
2339 |
case id_function_tag :
|
|
|
2340 |
case id_mem_func_tag :
|
|
|
2341 |
case id_stat_mem_func_tag : {
|
|
|
2342 |
/* Template functions */
|
|
|
2343 |
e = DEREF_exp ( id_function_etc_defn ( id ) ) ;
|
|
|
2344 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2345 |
/* Template already defined */
|
|
|
2346 |
return ;
|
|
|
2347 |
}
|
|
|
2348 |
form = DEREF_type ( id_function_etc_form ( id ) ) ;
|
|
|
2349 |
tid = match_specialise ( id, NULL_id ) ;
|
|
|
2350 |
if ( !IS_NULL_id ( tid ) ) {
|
|
|
2351 |
/* Find function definition */
|
|
|
2352 |
DECL_SPEC tds = DEREF_dspec ( id_storage ( tid ) ) ;
|
|
|
2353 |
if ( ( tds & dspec_instance ) && !( tds & dspec_defn ) ) {
|
|
|
2354 |
/* This is itself a template */
|
|
|
2355 |
if ( !EQ_id ( tid, id ) ) copy_template ( tid, force ) ;
|
|
|
2356 |
}
|
|
|
2357 |
e = DEREF_exp ( id_function_etc_defn ( tid ) ) ;
|
|
|
2358 |
}
|
|
|
2359 |
break ;
|
|
|
2360 |
}
|
|
|
2361 |
case id_stat_member_tag : {
|
|
|
2362 |
/* Static data members */
|
|
|
2363 |
int undef = 0 ;
|
|
|
2364 |
e = DEREF_exp ( id_stat_member_init ( id ) ) ;
|
|
|
2365 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
2366 |
/* Template member already defined */
|
|
|
2367 |
return ;
|
|
|
2368 |
}
|
|
|
2369 |
form = find_form ( id, &undef ) ;
|
|
|
2370 |
tid = match_specialise ( id, NULL_id ) ;
|
|
|
2371 |
if ( !IS_NULL_id ( tid ) ) {
|
|
|
2372 |
/* Find static member definition */
|
|
|
2373 |
DECL_SPEC tds = DEREF_dspec ( id_storage ( tid ) ) ;
|
|
|
2374 |
if ( ( tds & dspec_instance ) && !( tds & dspec_defn ) ) {
|
|
|
2375 |
/* This is itself a template */
|
|
|
2376 |
if ( !EQ_id ( tid, id ) ) copy_template ( tid, force ) ;
|
|
|
2377 |
}
|
|
|
2378 |
e = DEREF_exp ( id_stat_member_init ( tid ) ) ;
|
|
|
2379 |
}
|
|
|
2380 |
if ( force == 2 ) {
|
|
|
2381 |
/* Check for constants only */
|
|
|
2382 |
if ( IS_NULL_exp ( e ) ) return ;
|
|
|
2383 |
switch ( TAG_exp ( e ) ) {
|
|
|
2384 |
case exp_int_lit_tag : break ;
|
|
|
2385 |
case exp_null_tag : break ;
|
|
|
2386 |
default : return ;
|
|
|
2387 |
}
|
|
|
2388 |
}
|
|
|
2389 |
break ;
|
|
|
2390 |
}
|
|
|
2391 |
}
|
|
|
2392 |
|
|
|
2393 |
/* Check for exported templates */
|
|
|
2394 |
if ( is_exported ( tid ) ) {
|
|
|
2395 |
export_template ( id, 0 ) ;
|
|
|
2396 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2397 |
}
|
|
|
2398 |
|
|
|
2399 |
/* Define the object */
|
|
|
2400 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
2401 |
if ( force && !is_exported ( id ) ) {
|
|
|
2402 |
/* Check for non-exported templates */
|
|
|
2403 |
if ( !( ds & dspec_inline ) ) {
|
|
|
2404 |
report ( crt_loc, ERR_temp_decl_undef ( id ) ) ;
|
|
|
2405 |
export_template ( id, 0 ) ;
|
|
|
2406 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2407 |
}
|
|
|
2408 |
}
|
|
|
2409 |
CONS_id ( id, still_pending_templates, still_pending_templates ) ;
|
|
|
2410 |
ds &= ~dspec_defn ;
|
|
|
2411 |
} else {
|
|
|
2412 |
ds = define_templ_member ( id, tid, form, e ) ;
|
|
|
2413 |
ds |= dspec_defn ;
|
|
|
2414 |
}
|
|
|
2415 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
2416 |
return ;
|
|
|
2417 |
}
|
|
|
2418 |
|
|
|
2419 |
|
|
|
2420 |
/*
|
|
|
2421 |
DEFINE A LIST OF TEMPLATES
|
|
|
2422 |
|
|
|
2423 |
This routine calls copy_template for each element of the list p.
|
|
|
2424 |
*/
|
|
|
2425 |
|
|
|
2426 |
static void copy_template_list
|
|
|
2427 |
PROTO_N ( ( p, force ) )
|
|
|
2428 |
PROTO_T ( LIST ( IDENTIFIER ) p X int force )
|
|
|
2429 |
{
|
|
|
2430 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
2431 |
IDENTIFIER id ;
|
|
|
2432 |
DESTROY_CONS_id ( destroy, id, p, p ) ;
|
|
|
2433 |
copy_template_list ( p, force ) ;
|
|
|
2434 |
DEREF_loc ( id_loc ( id ), crt_loc ) ;
|
|
|
2435 |
copy_template ( id, force ) ;
|
|
|
2436 |
}
|
|
|
2437 |
return ;
|
|
|
2438 |
}
|
|
|
2439 |
|
|
|
2440 |
|
|
|
2441 |
/*
|
|
|
2442 |
DEFINE ALL PENDING TEMPLATES
|
|
|
2443 |
|
|
|
2444 |
This routine defines all the template instances in the list of pending
|
|
|
2445 |
templates. The list of still pending templates is only checked if
|
|
|
2446 |
templ is nonzero. A templ value of 2 is used to indicate the end of
|
|
|
2447 |
the file.
|
|
|
2448 |
*/
|
|
|
2449 |
|
|
|
2450 |
void clear_templates
|
|
|
2451 |
PROTO_N ( ( templ ) )
|
|
|
2452 |
PROTO_T ( int templ )
|
|
|
2453 |
{
|
|
|
2454 |
if ( !in_function_defn && !in_class_defn ) {
|
|
|
2455 |
LIST ( IDENTIFIER ) p = pending_templates ;
|
|
|
2456 |
if ( templ ) {
|
|
|
2457 |
/* Include still pending templates */
|
|
|
2458 |
p = APPEND_list ( still_pending_templates, p ) ;
|
|
|
2459 |
still_pending_templates = NULL_list ( IDENTIFIER ) ;
|
|
|
2460 |
}
|
|
|
2461 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
2462 |
LOCATION loc ;
|
|
|
2463 |
loc = crt_loc ;
|
|
|
2464 |
bad_crt_loc++ ;
|
|
|
2465 |
while ( !IS_NULL_list ( p ) ) {
|
|
|
2466 |
/* Scan through pending templates */
|
|
|
2467 |
pending_templates = NULL_list ( IDENTIFIER ) ;
|
|
|
2468 |
copy_template_list ( p, 0 ) ;
|
|
|
2469 |
p = pending_templates ;
|
|
|
2470 |
}
|
|
|
2471 |
if ( templ == 2 ) {
|
|
|
2472 |
/* Check for exported templates */
|
|
|
2473 |
p = still_pending_templates ;
|
|
|
2474 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
2475 |
still_pending_templates = NULL_list ( IDENTIFIER ) ;
|
|
|
2476 |
copy_template_list ( p, 1 ) ;
|
|
|
2477 |
}
|
|
|
2478 |
}
|
|
|
2479 |
crt_loc = loc ;
|
|
|
2480 |
bad_crt_loc-- ;
|
|
|
2481 |
}
|
|
|
2482 |
}
|
|
|
2483 |
return ;
|
|
|
2484 |
}
|