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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 "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 "access.h"
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#include "basetype.h"
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#include "cast.h"
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#include "check.h"
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#include "chktype.h"
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#include "class.h"
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#include "compile.h"
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#include "constant.h"
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#include "construct.h"
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#include "convert.h"
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#include "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 "exception.h"
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#include "expression.h"
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#include "file.h"
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#include "function.h"
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#include "hash.h"
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#include "identifier.h"
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#include "initialise.h"
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#include "instance.h"
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#include "label.h"
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#include "member.h"
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#include "namespace.h"
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#include "operator.h"
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#include "option.h"
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#include "overload.h"
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#include "predict.h"
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#include "printf.h"
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#include "redeclare.h"
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#include "rewrite.h"
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#include "statement.h"
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#include "syntax.h"
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#include "template.h"
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#include "tokdef.h"
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#include "token.h"
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#include "variable.h"
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/*
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CHECK A FUNCTION RETURN TYPE
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This routine checks whether the type t is a suitable function return
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type. This can be void (unqualified) or a complete type. def is
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true for a function definition or call, but false otherwise.
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*/
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TYPE check_ret_type
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PROTO_N ( ( t, err, def ) )
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PROTO_T ( TYPE t X ERROR *err X int def )
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{
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CV_SPEC cv = DEREF_cv ( type_qual ( t ) ) ;
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cv &= cv_qual ;
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if ( IS_type_top_etc ( t ) ) {
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if ( cv != cv_none && !def ) {
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/* Can't return 'cv void' */
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add_error ( err, ERR_dcl_fct_ret_void ( t ) ) ;
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if ( ( cv & cv_volatile ) && IS_type_top ( t ) ) {
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/* Map 'volatile void' to 'bottom' */
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t = type_bottom ;
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cv &= ~cv_volatile ;
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t = qualify_type ( t, cv, 0 ) ;
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}
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}
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} else {
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if ( def ) add_error ( err, check_incomplete ( t ) ) ;
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}
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if ( cv != cv_none && !def ) {
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/* Check for cv-qualified return types */
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add_error ( err, ERR_dcl_fct_cv_ret ( cv ) ) ;
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}
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return ( t ) ;
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}
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/*
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APPLY REFERENCE CONVERSIONS TO A LIST OF EXPRESSIONS
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This routine applies reference conversions to each element of the
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argument list args.
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*/
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LIST ( EXP ) convert_args
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PROTO_N ( ( args ) )
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PROTO_T ( LIST ( EXP ) args )
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{
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LIST ( EXP ) p = args ;
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while ( !IS_NULL_list ( p ) ) {
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EXP e = DEREF_exp ( HEAD_list ( p ) ) ;
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if ( !IS_NULL_exp ( e ) ) {
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e = convert_reference ( e, REF_ASSIGN ) ;
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COPY_exp ( HEAD_list ( p ), e ) ;
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}
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p = TAIL_list ( p ) ;
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}
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return ( args ) ;
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}
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/*
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FIND MINIMUM NUMBER OF ARGUMENTS FOR A FUNCTION
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This routine calculates the minimum number of arguments for the function
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type fn, taking default arguments and weak prototypes into account.
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The extra argument for member functions is included.
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*/
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unsigned min_no_args
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PROTO_N ( ( fn ) )
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PROTO_T ( TYPE fn )
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{
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unsigned n = 0 ;
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LIST ( TYPE ) ptypes ;
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LIST ( TYPE ) mtypes ;
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LIST ( IDENTIFIER ) p ;
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while ( IS_type_templ ( fn ) ) {
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fn = DEREF_type ( type_templ_defn ( fn ) ) ;
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}
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p = DEREF_list ( type_func_pids ( fn ) ) ;
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ptypes = DEREF_list ( type_func_ptypes ( fn ) ) ;
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mtypes = DEREF_list ( type_func_mtypes ( fn ) ) ;
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if ( !EQ_list ( mtypes, ptypes ) ) {
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/* Add one for member functions */
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if ( !IS_NULL_list ( mtypes ) ) {
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mtypes = TAIL_list ( mtypes ) ;
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if ( EQ_list ( mtypes, ptypes ) ) n = 1 ;
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}
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}
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while ( !IS_NULL_list ( p ) ) {
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/* Scan for default arguments */
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IDENTIFIER id = DEREF_id ( HEAD_list ( p ) ) ;
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EXP e = DEREF_exp ( id_parameter_init ( id ) ) ;
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if ( !IS_NULL_exp ( e ) ) break ;
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n++ ;
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p = TAIL_list ( p ) ;
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}
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return ( n ) ;
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}
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/*
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CHECK FUNCTION DEFAULT ARGUMENTS
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This routine checks the default arguments for the function type fn,
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returning true if there is a default argument. Missing default
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arguments are checked if chk is true.
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*/
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int check_func_dargs
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PROTO_N ( ( fn, chk, clr ) )
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PROTO_T ( TYPE fn X int chk X int clr )
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{
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int started = 0 ;
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unsigned tag = TAG_type ( fn ) ;
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while ( tag == type_templ_tag ) {
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fn = DEREF_type ( type_templ_defn ( fn ) ) ;
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tag = TAG_type ( fn ) ;
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}
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if ( tag == type_func_tag ) {
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LIST ( IDENTIFIER ) pids = DEREF_list ( type_func_pids ( fn ) ) ;
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while ( !IS_NULL_list ( pids ) ) {
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IDENTIFIER pid = DEREF_id ( HEAD_list ( pids ) ) ;
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EXP a = DEREF_exp ( id_parameter_init ( pid ) ) ;
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if ( IS_NULL_exp ( a ) ) {
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if ( started && !clr ) {
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/* Missing default arguments */
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TYPE s ;
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LOCATION loc ;
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DEREF_loc ( id_loc ( pid ), loc ) ;
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report ( loc, ERR_dcl_fct_default_missing ( pid ) ) ;
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s = DEREF_type ( id_parameter_type ( pid ) ) ;
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MAKE_exp_value ( s, a ) ;
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COPY_exp ( id_parameter_init ( pid ), a ) ;
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}
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} else {
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started = 1 ;
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if ( clr ) {
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/* Clear default argument */
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COPY_exp ( id_parameter_init ( pid ), NULL_exp ) ;
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} else {
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if ( !chk ) break ;
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}
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}
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pids = TAIL_list ( pids ) ;
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}
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}
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return ( started ) ;
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}
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/*
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CHECK A WEAK PROTOTYPE ARGUMENT
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This routine checks the expression a passed as an argument to a weak
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function parameter of type t. It returns the composite of t and the
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type of a, adding any errors to err.
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*/
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static TYPE check_weak_arg
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PROTO_N ( ( t, a, err ) )
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PROTO_T ( TYPE t X EXP a X ERROR *err )
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{
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ERROR err2 = NULL_err ;
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TYPE s = DEREF_type ( exp_type ( a ) ) ;
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if ( IS_exp_int_lit ( a ) && eq_type_offset ( s, t ) ) {
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/* Allow for integer literals */
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NAT n = DEREF_nat ( exp_int_lit_nat ( a ) ) ;
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if ( check_nat_range ( t, n ) == 0 ) return ( t ) ;
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}
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t = check_compatible ( t, s, 2, &err2, 1 ) ;
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if ( !IS_NULL_err ( err2 ) ) {
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err2 = set_severity ( err2, OPT_whatever, 0 ) ;
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add_error ( err, err2 ) ;
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}
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return ( t ) ;
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}
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/*
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PERFORM WEAK PROTOTYPE ANALYSIS
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This routine performs weak prototype analysis for a call to the
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function id with the arguments args. It is only called when the
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number of arguments matches the function type.
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*/
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static void check_weak_args
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PROTO_N ( ( id, args, n ) )
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PROTO_T ( IDENTIFIER id X LIST ( EXP ) args X unsigned n )
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{
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TYPE fn = DEREF_type ( id_function_etc_type ( id ) ) ;
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if ( IS_type_func ( fn ) ) {
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int changed = 0 ;
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int ell = DEREF_int ( type_func_ellipsis ( fn ) ) ;
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LIST ( TYPE ) p = DEREF_list ( type_func_ptypes ( fn ) ) ;
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LIST ( TYPE ) q = NULL_list ( TYPE ) ;
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LIST ( IDENTIFIER ) pids = NULL_list ( IDENTIFIER ) ;
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if ( ell == FUNC_WEAK_ARGS ) changed = 1 ;
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while ( !IS_NULL_list ( p ) ) {
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/* Check parameter types */
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TYPE s = DEREF_type ( HEAD_list ( p ) ) ;
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if ( !IS_NULL_list ( args ) ) {
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ERROR err = NULL_err ;
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EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
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TYPE t = check_weak_arg ( s, a, &err ) ;
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if ( !IS_NULL_err ( err ) ) {
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/* Report incompatible argument types */
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PTR ( LOCATION ) loc = id_loc ( id ) ;
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ERROR err2 = ERR_expr_call_weak_arg ( n, loc ) ;
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err = concat_error ( ERR_expr_call_func ( id ), err ) ;
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err = concat_error ( err, err2 ) ;
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report ( crt_loc, err ) ;
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}
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if ( !EQ_type ( t, s ) ) {
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if ( changed ) changed = 1 ;
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s = t ;
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}
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args = TAIL_list ( args ) ;
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n++ ;
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}
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if ( changed ) CONS_type ( s, q, q ) ;
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p = TAIL_list ( p ) ;
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}
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310 |
if ( ell == FUNC_NO_PARAMS ) {
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/* Previous declaration was 'id ()' */
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LOCATION loc ;
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int par = CONTEXT_PARAMETER ;
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NAMESPACE ns = DEREF_nspace ( type_func_pars ( fn ) ) ;
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loc = decl_loc ;
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decl_loc = crt_loc ;
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push_namespace ( ns ) ;
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318 |
while ( !IS_NULL_list ( args ) ) {
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HASHID nm = lookup_anon () ;
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EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
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TYPE t = DEREF_type ( exp_type ( a ) ) ;
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IDENTIFIER pid = DEREF_id ( hashid_id ( nm ) ) ;
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pid = make_param_decl ( dspec_none, t, pid, par ) ;
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init_param ( pid, NULL_exp ) ;
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CONS_id ( pid, pids, pids ) ;
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CONS_type ( t, q, q ) ;
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args = TAIL_list ( args ) ;
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}
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IGNORE pop_namespace () ;
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ell = FUNC_WEAK_ARGS ;
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decl_loc = loc ;
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changed = 2 ;
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}
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334 |
if ( changed == 2 ) {
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q = REVERSE_list ( q ) ;
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fn = copy_typedef ( id, fn, cv_none ) ;
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COPY_list ( type_func_ptypes ( fn ), q ) ;
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COPY_list ( type_func_mtypes ( fn ), q ) ;
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339 |
if ( !IS_NULL_list ( pids ) ) {
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340 |
pids = REVERSE_list ( pids ) ;
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341 |
COPY_list ( type_func_pids ( fn ), pids ) ;
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}
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343 |
COPY_int ( type_func_ellipsis ( fn ), ell ) ;
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344 |
COPY_type ( id_function_etc_type ( id ), fn ) ;
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COPY_loc ( id_loc ( id ), crt_loc ) ;
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decl_func_type ( id, fn, 0 ) ;
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} else {
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348 |
DESTROY_list ( q, SIZE_type ) ;
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349 |
}
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|
350 |
}
|
|
|
351 |
return ;
|
|
|
352 |
}
|
|
|
353 |
|
|
|
354 |
|
|
|
355 |
/*
|
|
|
356 |
CHECK PRINTF AND SCANF ARGUMENTS
|
|
|
357 |
|
|
|
358 |
This routine performs weak prototype analysis for a call to the
|
|
|
359 |
printf-like or scanf-like function id with the arguments args. p gives
|
|
|
360 |
the parameter types deduced from the format string.
|
|
|
361 |
*/
|
|
|
362 |
|
|
|
363 |
static void check_printf_args
|
|
|
364 |
PROTO_N ( ( id, p, args, n, pf ) )
|
|
|
365 |
PROTO_T ( IDENTIFIER id X LIST ( TYPE ) p X LIST ( EXP ) args X
|
|
|
366 |
unsigned n X int pf )
|
|
|
367 |
{
|
|
|
368 |
unsigned np = LENGTH_list ( p ) + ( n - 1 ) ;
|
|
|
369 |
unsigned na = LENGTH_list ( args ) + ( n - 1 ) ;
|
|
|
370 |
if ( np != na ) {
|
|
|
371 |
/* Check number of parameters */
|
|
|
372 |
ERROR err = ERR_expr_call_args_exact ( na, na, np ) ;
|
|
|
373 |
err = set_severity ( err, OPT_weak, -1 ) ;
|
|
|
374 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
375 |
err = concat_error ( ERR_expr_call_func ( id ), err ) ;
|
|
|
376 |
}
|
|
|
377 |
report ( crt_loc, err ) ;
|
|
|
378 |
}
|
|
|
379 |
while ( !IS_NULL_list ( p ) && !IS_NULL_list ( args ) ) {
|
|
|
380 |
/* Check parameter types */
|
|
|
381 |
ERROR err = NULL_err ;
|
|
|
382 |
TYPE s = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
383 |
EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
384 |
TYPE t = check_weak_arg ( s, a, &err ) ;
|
|
|
385 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
386 |
/* Report incompatible argument types */
|
|
|
387 |
PTR ( LOCATION ) loc = NULL_ptr ( LOCATION ) ;
|
|
|
388 |
if ( !IS_NULL_id ( id ) ) loc = id_loc ( id ) ;
|
|
|
389 |
err = concat_error ( err, ERR_expr_call_weak_arg ( n, loc ) ) ;
|
|
|
390 |
} else {
|
|
|
391 |
/* Check that scanf arguments aren't const */
|
|
|
392 |
if ( !( pf & 1 ) && IS_type_ptr ( t ) ) {
|
|
|
393 |
CV_SPEC cv ;
|
|
|
394 |
t = DEREF_type ( type_ptr_sub ( t ) ) ;
|
|
|
395 |
cv = DEREF_cv ( type_qual ( t ) ) ;
|
|
|
396 |
if ( cv & cv_const ) {
|
|
|
397 |
err = ERR_conv_qual_cast ( cv_const ) ;
|
|
|
398 |
err = set_severity ( err, OPT_weak, -1 ) ;
|
|
|
399 |
}
|
|
|
400 |
}
|
|
|
401 |
}
|
|
|
402 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
403 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
404 |
err = concat_error ( ERR_expr_call_func ( id ), err ) ;
|
|
|
405 |
}
|
|
|
406 |
report ( crt_loc, err ) ;
|
|
|
407 |
}
|
|
|
408 |
args = TAIL_list ( args ) ;
|
|
|
409 |
p = TAIL_list ( p ) ;
|
|
|
410 |
n++ ;
|
|
|
411 |
}
|
|
|
412 |
return ;
|
|
|
413 |
}
|
|
|
414 |
|
|
|
415 |
|
|
|
416 |
/*
|
|
|
417 |
APPLY ARGUMENT CONVERSIONS TO A LIST OF EXPRESSIONS
|
|
|
418 |
|
|
|
419 |
This routine applies the argument conversions indicated by the function
|
|
|
420 |
type fn to the argument list args. gr gives information on how member
|
|
|
421 |
functions are inherited. The function return type is returned via pr.
|
|
|
422 |
The identifier id is used in error reporting only, it is the function
|
|
|
423 |
being called for named functions and the null identifier otherwise.
|
|
|
424 |
*/
|
|
|
425 |
|
|
|
426 |
static LIST ( EXP ) cast_args
|
|
|
427 |
PROTO_N ( ( id, fn, gr, args, pr, mem ) )
|
|
|
428 |
PROTO_T ( IDENTIFIER id X TYPE fn X GRAPH gr X LIST ( EXP ) args X
|
|
|
429 |
TYPE *pr X int mem )
|
|
|
430 |
{
|
|
|
431 |
int ell ;
|
|
|
432 |
TYPE ret ;
|
|
|
433 |
int extra = 0 ;
|
|
|
434 |
unsigned n = 1 ;
|
|
|
435 |
LIST ( EXP ) q ;
|
|
|
436 |
LIST ( TYPE ) p ;
|
|
|
437 |
LIST ( TYPE ) ptypes ;
|
|
|
438 |
LIST ( TYPE ) mtypes ;
|
|
|
439 |
ERROR err = NULL_err ;
|
|
|
440 |
int printf_function = 0 ;
|
|
|
441 |
LIST ( IDENTIFIER ) pids ;
|
|
|
442 |
OPTION weak = OPTION_OFF ;
|
|
|
443 |
LIST ( TYPE ) ftypes = NULL_list ( TYPE ) ;
|
|
|
444 |
|
|
|
445 |
/* Allow for template types */
|
|
|
446 |
if ( IS_type_templ ( fn ) ) {
|
|
|
447 |
int d ;
|
|
|
448 |
TOKEN sort = DEREF_tok ( type_templ_sort ( fn ) ) ;
|
|
|
449 |
pids = DEREF_list ( tok_templ_pids ( sort ) ) ;
|
|
|
450 |
force_template++ ;
|
|
|
451 |
d = save_token_args ( pids, NULL_list ( TOKEN ) ) ;
|
|
|
452 |
fn = DEREF_type ( type_templ_defn ( fn ) ) ;
|
|
|
453 |
args = cast_args ( id, fn, gr, args, &ret, mem ) ;
|
|
|
454 |
*pr = expand_type ( ret, 2 ) ;
|
|
|
455 |
restore_token_args ( pids, d ) ;
|
|
|
456 |
force_template-- ;
|
|
|
457 |
return ( args ) ;
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
/* Check function return type */
|
|
|
461 |
ret = DEREF_type ( type_func_ret ( fn ) ) ;
|
|
|
462 |
ret = check_ret_type ( ret, &err, 1 ) ;
|
|
|
463 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
464 |
err = concat_error ( err, ERR_expr_call_ret () ) ;
|
|
|
465 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
466 |
err = concat_error ( ERR_expr_call_func ( id ), err ) ;
|
|
|
467 |
}
|
|
|
468 |
report ( crt_loc, err ) ;
|
|
|
469 |
}
|
|
|
470 |
ret = convert_qual_type ( ret ) ;
|
|
|
471 |
*pr = ret ;
|
|
|
472 |
|
|
|
473 |
/* Check number of arguments */
|
|
|
474 |
ell = DEREF_int ( type_func_ellipsis ( fn ) ) ;
|
|
|
475 |
ptypes = DEREF_list ( type_func_ptypes ( fn ) ) ;
|
|
|
476 |
mtypes = DEREF_list ( type_func_mtypes ( fn ) ) ;
|
|
|
477 |
if ( !EQ_list ( mtypes, ptypes ) ) {
|
|
|
478 |
if ( mem ) {
|
|
|
479 |
/* Member function */
|
|
|
480 |
extra = 1 ;
|
|
|
481 |
} else {
|
|
|
482 |
fn = copy_typedef ( NULL_id, fn, cv_none ) ;
|
|
|
483 |
mtypes = ptypes ;
|
|
|
484 |
COPY_list ( type_func_mtypes ( fn ), mtypes ) ;
|
|
|
485 |
}
|
|
|
486 |
}
|
|
|
487 |
if ( match_no_args == 0 ) {
|
|
|
488 |
/* Weren't checked in overload resolution */
|
|
|
489 |
unsigned na = LENGTH_list ( args ) ;
|
|
|
490 |
unsigned npars = LENGTH_list ( mtypes ) ;
|
|
|
491 |
if ( na != npars ) {
|
|
|
492 |
int more = 0 ;
|
|
|
493 |
unsigned margs = min_no_args ( fn ) ;
|
|
|
494 |
if ( ell & FUNC_VAR_PARAMS ) more = 1 ;
|
|
|
495 |
if ( na < margs || ( na > npars && !more ) ) {
|
|
|
496 |
/* Illegal number of arguments */
|
|
|
497 |
if ( extra ) {
|
|
|
498 |
/* Report actual numbers of passed arguments */
|
|
|
499 |
na-- ;
|
|
|
500 |
npars-- ;
|
|
|
501 |
margs-- ;
|
|
|
502 |
}
|
|
|
503 |
if ( more ) {
|
|
|
504 |
err = ERR_expr_call_args_min ( na, na, margs ) ;
|
|
|
505 |
} else if ( npars == margs ) {
|
|
|
506 |
err = ERR_expr_call_args_exact ( na, na, npars ) ;
|
|
|
507 |
} else {
|
|
|
508 |
err = ERR_expr_call_args_range ( na, na, margs, npars ) ;
|
|
|
509 |
}
|
|
|
510 |
if ( ell & FUNC_NON_PROTO ) {
|
|
|
511 |
/* Allowed for non-prototype functions */
|
|
|
512 |
err = set_severity ( err, OPT_weak, -1 ) ;
|
|
|
513 |
}
|
|
|
514 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
515 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
516 |
ERROR err2 = ERR_expr_call_func ( id ) ;
|
|
|
517 |
err = concat_error ( err2, err ) ;
|
|
|
518 |
}
|
|
|
519 |
report ( crt_loc, err ) ;
|
|
|
520 |
}
|
|
|
521 |
}
|
|
|
522 |
}
|
|
|
523 |
}
|
|
|
524 |
|
|
|
525 |
/* Check function argument types */
|
|
|
526 |
p = mtypes ;
|
|
|
527 |
q = args ;
|
|
|
528 |
pids = DEREF_list ( type_func_pids ( fn ) ) ;
|
|
|
529 |
|
|
|
530 |
/* Extra implicit argument */
|
|
|
531 |
if ( extra && !IS_NULL_list ( p ) && !IS_NULL_list ( q ) ) {
|
|
|
532 |
EXP b = DEREF_exp ( HEAD_list ( q ) ) ;
|
|
|
533 |
TYPE t = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
534 |
if ( !IS_NULL_exp ( b ) && !IS_NULL_type ( t ) ) {
|
|
|
535 |
/* Non-static member function called with object */
|
|
|
536 |
TYPE u = t ;
|
|
|
537 |
int temp = 1 ;
|
|
|
538 |
CLASS_TYPE cs, ct ;
|
|
|
539 |
TYPE s = DEREF_type ( exp_type ( b ) ) ;
|
|
|
540 |
CV_SPEC qs = DEREF_cv ( type_qual ( s ) ) ;
|
|
|
541 |
CV_SPEC qt = DEREF_cv ( type_func_mqual ( fn ) ) ;
|
|
|
542 |
|
|
|
543 |
/* Check for temporary object */
|
|
|
544 |
while ( IS_type_array ( s ) ) {
|
|
|
545 |
s = DEREF_type ( type_array_sub ( s ) ) ;
|
|
|
546 |
temp = 0 ;
|
|
|
547 |
}
|
|
|
548 |
while ( IS_type_ptr_etc ( s ) ) {
|
|
|
549 |
s = DEREF_type ( type_ptr_etc_sub ( s ) ) ;
|
|
|
550 |
temp = 0 ;
|
|
|
551 |
}
|
|
|
552 |
if ( temp ) {
|
|
|
553 |
TYPE ps ;
|
|
|
554 |
if ( !( qs & cv_lvalue ) ) {
|
|
|
555 |
ERROR ferr = NULL_err ;
|
|
|
556 |
b = make_temporary ( s, b, NULL_exp, 0, &ferr ) ;
|
|
|
557 |
if ( !IS_NULL_err ( ferr ) ) report ( crt_loc, ferr ) ;
|
|
|
558 |
}
|
|
|
559 |
MAKE_type_ptr ( cv_none, s, ps ) ;
|
|
|
560 |
MAKE_exp_address ( ps, b, b ) ;
|
|
|
561 |
}
|
|
|
562 |
|
|
|
563 |
/* Check types for base class conversion */
|
|
|
564 |
while ( IS_type_ptr_etc ( t ) ) {
|
|
|
565 |
t = DEREF_type ( type_ptr_etc_sub ( t ) ) ;
|
|
|
566 |
}
|
|
|
567 |
cs = DEREF_ctype ( type_compound_defn ( s ) ) ;
|
|
|
568 |
ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
569 |
if ( !eq_ctype ( cs, ct ) ) {
|
|
|
570 |
GRAPH gs = find_base_class ( cs, ct, 1 ) ;
|
|
|
571 |
if ( IS_NULL_graph ( gs ) ) {
|
|
|
572 |
err = ERR_expr_ref_func_type ( cs ) ;
|
|
|
573 |
} else {
|
|
|
574 |
OFFSET off ;
|
|
|
575 |
err = check_ambig_base ( gs ) ;
|
|
|
576 |
if ( !IS_NULL_graph ( gr ) ) {
|
|
|
577 |
CLASS_TYPE cr = DEREF_ctype ( graph_head ( gr ) ) ;
|
|
|
578 |
if ( !eq_ctype ( cs, cr ) && !eq_ctype ( cr, ct ) ) {
|
|
|
579 |
/* Inherited via intermediate base */
|
|
|
580 |
GRAPH g1 = find_base_class ( cs, cr, 1 ) ;
|
|
|
581 |
if ( !IS_NULL_graph ( g1 ) ) {
|
|
|
582 |
GRAPH g2 = find_base_class ( cr, ct, 1 ) ;
|
|
|
583 |
if ( !IS_NULL_graph ( g2 ) ) {
|
|
|
584 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
585 |
ERROR err2 ;
|
|
|
586 |
destroy_error ( err, 1 ) ;
|
|
|
587 |
err = check_ambig_base ( g1 ) ;
|
|
|
588 |
err2 = check_ambig_base ( g2 ) ;
|
|
|
589 |
err = concat_error ( err, err2 ) ;
|
|
|
590 |
}
|
|
|
591 |
gs = DEREF_graph ( graph_top ( g2 ) ) ;
|
|
|
592 |
gs = find_subgraph ( g1, gs, g2 ) ;
|
|
|
593 |
}
|
|
|
594 |
}
|
|
|
595 |
}
|
|
|
596 |
}
|
|
|
597 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
598 |
/* Report ambiguous bases */
|
|
|
599 |
ERROR err2 = ERR_class_member_lookup_func () ;
|
|
|
600 |
err = concat_error ( err, err2 ) ;
|
|
|
601 |
}
|
|
|
602 |
off = DEREF_off ( graph_off ( gs ) ) ;
|
|
|
603 |
b = make_base_cast ( u, b, off ) ;
|
|
|
604 |
/* Access should have been checked */
|
|
|
605 |
}
|
|
|
606 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
607 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
608 |
ERROR err2 = ERR_expr_call_func ( id ) ;
|
|
|
609 |
err = concat_error ( err2, err ) ;
|
|
|
610 |
}
|
|
|
611 |
report ( crt_loc, err ) ;
|
|
|
612 |
}
|
|
|
613 |
}
|
|
|
614 |
|
|
|
615 |
/* Check type qualifiers */
|
|
|
616 |
qs &= cv_qual ;
|
|
|
617 |
qt &= cv_qual ;
|
|
|
618 |
if ( qs != qt ) MAKE_exp_cast ( u, CONV_QUAL, b, b ) ;
|
|
|
619 |
qs = ( qs & ~qt ) ;
|
|
|
620 |
if ( qs != cv_none ) {
|
|
|
621 |
if ( IS_NULL_id ( id ) ) {
|
|
|
622 |
err = ERR_class_this_qual ( qs ) ;
|
|
|
623 |
report ( crt_loc, err ) ;
|
|
|
624 |
} else {
|
|
|
625 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
626 |
if ( !IS_hashid_destr ( nm ) ) {
|
|
|
627 |
/* Allowed for destructors */
|
|
|
628 |
ERROR err2 ;
|
|
|
629 |
err = ERR_class_this_qual ( qs ) ;
|
|
|
630 |
err2 = ERR_expr_call_func ( id ) ;
|
|
|
631 |
err = concat_error ( err2, err ) ;
|
|
|
632 |
report ( crt_loc, err ) ;
|
|
|
633 |
}
|
|
|
634 |
}
|
|
|
635 |
}
|
|
|
636 |
COPY_exp ( HEAD_list ( q ), b ) ;
|
|
|
637 |
}
|
|
|
638 |
p = TAIL_list ( p ) ;
|
|
|
639 |
q = TAIL_list ( q ) ;
|
|
|
640 |
}
|
|
|
641 |
|
|
|
642 |
/* Normal arguments */
|
|
|
643 |
if ( ell & FUNC_NON_PROTO ) {
|
|
|
644 |
weak = option ( OPT_weak ) ;
|
|
|
645 |
goto ellipsis_lab ;
|
|
|
646 |
}
|
|
|
647 |
while ( !IS_NULL_list ( p ) && !IS_NULL_list ( q ) ) {
|
|
|
648 |
EXP b = DEREF_exp ( HEAD_list ( q ) ) ;
|
|
|
649 |
TYPE t = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
650 |
OPTION opt = option ( OPT_conv_int_int_impl ) ;
|
|
|
651 |
if ( IS_NULL_exp ( b ) ) b = make_error_exp ( 0 ) ;
|
|
|
652 |
if ( IS_exp_paren ( b ) ) {
|
|
|
653 |
/* Parentheses suppress conversion warnings */
|
|
|
654 |
b = DEREF_exp ( exp_paren_arg ( b ) ) ;
|
|
|
655 |
option ( OPT_conv_int_int_impl ) = OPTION_ALLOW ;
|
|
|
656 |
}
|
|
|
657 |
if ( IS_exp_string_lit ( b ) ) {
|
|
|
658 |
if ( option ( OPT_printf_string ) ) {
|
|
|
659 |
/* Check for printf and scanf strings */
|
|
|
660 |
int pf = is_printf_type ( t ) ;
|
|
|
661 |
if ( pf ) {
|
|
|
662 |
unsigned na = LENGTH_list ( q ) + 100 ;
|
|
|
663 |
STRING fmt = DEREF_str ( exp_string_lit_str ( b ) ) ;
|
|
|
664 |
ftypes = find_printf_args ( fmt, na, pf ) ;
|
|
|
665 |
printf_function = pf ;
|
|
|
666 |
}
|
|
|
667 |
}
|
|
|
668 |
}
|
|
|
669 |
err = NULL_err ;
|
|
|
670 |
b = init_assign ( t, cv_none, b, &err ) ;
|
|
|
671 |
if ( pass_complex_type ( t ) ) {
|
|
|
672 |
/* Create temporary variable */
|
|
|
673 |
b = remove_temporary ( b, NULL_exp ) ;
|
|
|
674 |
b = make_temporary ( t, b, NULL_exp, 0, &err ) ;
|
|
|
675 |
MAKE_type_ptr ( cv_none, t, t ) ;
|
|
|
676 |
MAKE_exp_address ( t, b, b ) ;
|
|
|
677 |
}
|
|
|
678 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
679 |
err = init_error ( err, 0 ) ;
|
|
|
680 |
err = concat_error ( err, ERR_expr_call_arg ( n ) ) ;
|
|
|
681 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
682 |
err = concat_error ( ERR_expr_call_func ( id ), err ) ;
|
|
|
683 |
}
|
|
|
684 |
report ( crt_loc, err ) ;
|
|
|
685 |
}
|
|
|
686 |
option ( OPT_conv_int_int_impl ) = opt ;
|
|
|
687 |
n++ ;
|
|
|
688 |
COPY_exp ( HEAD_list ( q ), b ) ;
|
|
|
689 |
pids = TAIL_list ( pids ) ;
|
|
|
690 |
p = TAIL_list ( p ) ;
|
|
|
691 |
q = TAIL_list ( q ) ;
|
|
|
692 |
}
|
|
|
693 |
|
|
|
694 |
/* Default arguments */
|
|
|
695 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
696 |
LIST ( EXP ) dargs = NULL_list ( EXP ) ;
|
|
|
697 |
while ( !IS_NULL_list ( pids ) ) {
|
|
|
698 |
IDENTIFIER pid = DEREF_id ( HEAD_list ( pids ) ) ;
|
|
|
699 |
EXP e = DEREF_exp ( id_parameter_init ( pid ) ) ;
|
|
|
700 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
701 |
TYPE t = DEREF_type ( exp_type ( e ) ) ;
|
|
|
702 |
if ( pass_complex_type ( t ) ) {
|
|
|
703 |
/* Create temporary variable */
|
|
|
704 |
EXP d = DEREF_exp ( id_parameter_term ( pid ) ) ;
|
|
|
705 |
if ( !IS_NULL_exp ( d ) ) {
|
|
|
706 |
d = copy_exp ( d, NULL_type, NULL_type ) ;
|
|
|
707 |
}
|
|
|
708 |
err = NULL_err ;
|
|
|
709 |
e = remove_temporary ( e, NULL_exp ) ;
|
|
|
710 |
MAKE_exp_copy ( t, e, e ) ;
|
|
|
711 |
e = make_temporary ( t, e, d, 0, &err ) ;
|
|
|
712 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
713 |
err = concat_error ( err, ERR_expr_call_arg ( n ) ) ;
|
|
|
714 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
715 |
ERROR err2 = ERR_expr_call_func ( id ) ;
|
|
|
716 |
err = concat_error ( err2, err ) ;
|
|
|
717 |
}
|
|
|
718 |
report ( crt_loc, err ) ;
|
|
|
719 |
}
|
|
|
720 |
MAKE_type_ptr ( cv_none, t, t ) ;
|
|
|
721 |
MAKE_exp_address ( t, e, e ) ;
|
|
|
722 |
} else {
|
|
|
723 |
MAKE_exp_copy ( t, e, e ) ;
|
|
|
724 |
}
|
|
|
725 |
CONS_exp ( e, dargs, dargs ) ;
|
|
|
726 |
n++ ;
|
|
|
727 |
}
|
|
|
728 |
pids = TAIL_list ( pids ) ;
|
|
|
729 |
}
|
|
|
730 |
if ( !IS_NULL_list ( dargs ) ) {
|
|
|
731 |
dargs = REVERSE_list ( dargs ) ;
|
|
|
732 |
args = APPEND_list ( args, dargs ) ;
|
|
|
733 |
}
|
|
|
734 |
}
|
|
|
735 |
|
|
|
736 |
/* Ellipsis arguments */
|
|
|
737 |
ellipsis_lab : {
|
|
|
738 |
unsigned wn = n ;
|
|
|
739 |
LIST ( EXP ) wq = q ;
|
|
|
740 |
while ( !IS_NULL_list ( q ) ) {
|
|
|
741 |
TYPE t, s ;
|
|
|
742 |
EXP b = DEREF_exp ( HEAD_list ( q ) ) ;
|
|
|
743 |
if ( IS_NULL_exp ( b ) ) b = make_error_exp ( 0 ) ;
|
|
|
744 |
b = convert_lvalue ( b ) ;
|
|
|
745 |
b = convert_none ( b ) ;
|
|
|
746 |
t = DEREF_type ( exp_type ( b ) ) ;
|
|
|
747 |
err = NULL_err ;
|
|
|
748 |
s = arg_promote_type ( t, &err ) ;
|
|
|
749 |
if ( !EQ_type ( s, t ) ) {
|
|
|
750 |
b = init_assign ( s, cv_none, b, &err ) ;
|
|
|
751 |
}
|
|
|
752 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
753 |
err = init_error ( err, 0 ) ;
|
|
|
754 |
err = concat_error ( err, ERR_expr_call_ellipsis ( n ) ) ;
|
|
|
755 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
756 |
err = concat_error ( ERR_expr_call_func ( id ), err ) ;
|
|
|
757 |
}
|
|
|
758 |
report ( crt_loc, err ) ;
|
|
|
759 |
}
|
|
|
760 |
COPY_exp ( HEAD_list ( q ), b ) ;
|
|
|
761 |
n++ ;
|
|
|
762 |
q = TAIL_list ( q ) ;
|
|
|
763 |
}
|
|
|
764 |
if ( weak && !IS_NULL_id ( id ) ) {
|
|
|
765 |
/* Perform weak prototype analysis */
|
|
|
766 |
check_weak_args ( id, wq, wn ) ;
|
|
|
767 |
}
|
|
|
768 |
if ( printf_function ) {
|
|
|
769 |
/* Check printf arguments */
|
|
|
770 |
if ( option ( OPT_weak ) ) {
|
|
|
771 |
check_printf_args ( id, ftypes, wq, wn, printf_function ) ;
|
|
|
772 |
}
|
|
|
773 |
DESTROY_list ( ftypes, SIZE_type ) ;
|
|
|
774 |
}
|
|
|
775 |
}
|
|
|
776 |
IGNORE check_value ( OPT_VAL_func_args, ( unsigned long ) ( n - 1 ) ) ;
|
|
|
777 |
return ( args ) ;
|
|
|
778 |
}
|
|
|
779 |
|
|
|
780 |
|
|
|
781 |
/*
|
|
|
782 |
APPLY A NAMED FUNCTION TO A LIST OF EXPRESSIONS
|
|
|
783 |
|
|
|
784 |
This routine applies the function id to the list of arguments args.
|
|
|
785 |
Any qualifiers used to express id are passed in as qual, since these
|
|
|
786 |
may suppress the virtual call mechanism. gr gives the base class
|
|
|
787 |
from which a member function is inherited.
|
|
|
788 |
*/
|
|
|
789 |
|
|
|
790 |
EXP apply_func_id
|
|
|
791 |
PROTO_N ( ( id, qual, gr, args ) )
|
|
|
792 |
PROTO_T ( IDENTIFIER id X QUALIFIER qual X GRAPH gr X LIST ( EXP ) args )
|
|
|
793 |
{
|
|
|
794 |
EXP e ;
|
|
|
795 |
TYPE fn ;
|
|
|
796 |
TYPE ret ;
|
|
|
797 |
DECL_SPEC ds ;
|
|
|
798 |
int throws = 1 ;
|
|
|
799 |
EXP virt = NULL_exp ;
|
|
|
800 |
IDENTIFIER fid = id ;
|
|
|
801 |
|
|
|
802 |
/* Check for non-functions */
|
|
|
803 |
if ( !IS_id_function_etc ( id ) ) {
|
|
|
804 |
e = make_error_exp ( 0 ) ;
|
|
|
805 |
return ( e ) ;
|
|
|
806 |
}
|
|
|
807 |
|
|
|
808 |
/* Check for inherited functions */
|
|
|
809 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
810 |
if ( ds & dspec_inherit ) {
|
|
|
811 |
id = DEREF_id ( id_alias ( id ) ) ;
|
|
|
812 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
813 |
}
|
|
|
814 |
|
|
|
815 |
/* Check for trivial functions */
|
|
|
816 |
if ( ds & dspec_trivial ) {
|
|
|
817 |
e = apply_trivial_func ( id, args ) ;
|
|
|
818 |
if ( !IS_NULL_exp ( e ) ) {
|
|
|
819 |
DESTROY_list ( args, SIZE_exp ) ;
|
|
|
820 |
return ( e ) ;
|
|
|
821 |
}
|
|
|
822 |
}
|
|
|
823 |
|
|
|
824 |
/* Convert the arguments */
|
|
|
825 |
fn = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
826 |
args = cast_args ( id, fn, gr, args, &ret, 1 ) ;
|
|
|
827 |
|
|
|
828 |
/* Check for virtual function calls */
|
|
|
829 |
if ( ds & dspec_virtual ) {
|
|
|
830 |
if ( !( qual & qual_explicit ) ) {
|
|
|
831 |
EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
832 |
int know = know_type ( a ) ;
|
|
|
833 |
if ( know == 0 ) {
|
|
|
834 |
if ( !IS_NULL_exp ( a ) ) {
|
|
|
835 |
TYPE ta = DEREF_type ( exp_type ( a ) ) ;
|
|
|
836 |
MAKE_exp_dummy ( ta, a, LINK_NONE, NULL_off, 1, virt ) ;
|
|
|
837 |
COPY_exp ( HEAD_list ( args ), virt ) ;
|
|
|
838 |
}
|
|
|
839 |
} else if ( know == 2 ) {
|
|
|
840 |
/* Non-obvious case */
|
|
|
841 |
report ( crt_loc, ERR_class_virtual_not ( id ) ) ;
|
|
|
842 |
}
|
|
|
843 |
}
|
|
|
844 |
if ( IS_NULL_exp ( virt ) ) {
|
|
|
845 |
/* Explicit call of virtual function */
|
|
|
846 |
if ( ds & dspec_pure ) {
|
|
|
847 |
/* Call of pure virtual function */
|
|
|
848 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
849 |
if ( IS_hashid_destr ( nm ) ) {
|
|
|
850 |
/* Calling pure destructor is alright */
|
|
|
851 |
/* EMPTY */
|
|
|
852 |
} else {
|
|
|
853 |
report ( crt_loc, ERR_class_abstract_call ( id ) ) ;
|
|
|
854 |
}
|
|
|
855 |
}
|
|
|
856 |
if ( !( ds & dspec_used ) ) {
|
|
|
857 |
/* Mark explicit use */
|
|
|
858 |
reuse_id ( id, suppress_usage ) ;
|
|
|
859 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
860 |
}
|
|
|
861 |
}
|
|
|
862 |
}
|
|
|
863 |
if ( ( ds & dspec_friend ) && IS_NULL_exp ( virt ) ) {
|
|
|
864 |
/* Call can't throw an exception */
|
|
|
865 |
throws = 0 ;
|
|
|
866 |
}
|
|
|
867 |
|
|
|
868 |
/* Check for token applications */
|
|
|
869 |
if ( ds & dspec_token ) {
|
|
|
870 |
if ( ( qual & qual_mark ) && !( ds & dspec_reserve ) ) {
|
|
|
871 |
/* Parenthesised - use function proper */
|
|
|
872 |
/* EMPTY */
|
|
|
873 |
} else {
|
|
|
874 |
TYPE form = DEREF_type ( id_function_etc_form ( id ) ) ;
|
|
|
875 |
if ( !IS_NULL_type ( form ) && IS_type_token ( form ) ) {
|
|
|
876 |
IDENTIFIER ext = DEREF_id ( type_token_tok ( form ) ) ;
|
|
|
877 |
if ( !IS_NULL_id ( ext ) && IS_id_token ( ext ) ) {
|
|
|
878 |
id = ext ;
|
|
|
879 |
}
|
|
|
880 |
}
|
|
|
881 |
}
|
|
|
882 |
}
|
|
|
883 |
|
|
|
884 |
/* A function call is a side effect */
|
|
|
885 |
no_side_effects++ ;
|
|
|
886 |
|
|
|
887 |
/* Form the result */
|
|
|
888 |
MAKE_exp_func_id ( ret, id, args, virt, e ) ;
|
|
|
889 |
if ( pass_complex_type ( ret ) ) {
|
|
|
890 |
/* Allow for complex return types */
|
|
|
891 |
EXP a ;
|
|
|
892 |
MAKE_exp_dummy ( ret, NULL_exp, LINK_NONE, NULL_off, 0, a ) ;
|
|
|
893 |
if ( IS_id_stat_mem_func ( id ) ) {
|
|
|
894 |
/* Insert as second parameter for static member functions */
|
|
|
895 |
EXP b = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
896 |
COPY_exp ( HEAD_list ( args ), a ) ;
|
|
|
897 |
CONS_exp ( b, args, args ) ;
|
|
|
898 |
} else {
|
|
|
899 |
/* Insert as first parameter for other functions */
|
|
|
900 |
CONS_exp ( a, args, args ) ;
|
|
|
901 |
}
|
|
|
902 |
COPY_list ( exp_func_id_args ( e ), args ) ;
|
|
|
903 |
COPY_unsigned ( exp_func_id_extra ( e ), 1 ) ;
|
|
|
904 |
COPY_type ( exp_type ( e ), type_void ) ;
|
|
|
905 |
MAKE_exp_constr ( ret, e, a, a, DEFAULT_USR, e ) ;
|
|
|
906 |
}
|
|
|
907 |
|
|
|
908 |
/* Check for exception violations */
|
|
|
909 |
if ( throws ) {
|
|
|
910 |
IGNORE check_func_throw ( fn, fid ) ;
|
|
|
911 |
}
|
|
|
912 |
return ( e ) ;
|
|
|
913 |
}
|
|
|
914 |
|
|
|
915 |
|
|
|
916 |
/*
|
|
|
917 |
APPLY A FUNCTION TO A LIST OF EXPRESSIONS
|
|
|
918 |
|
|
|
919 |
This routine applies the function expression a to the list of arguments
|
|
|
920 |
args.
|
|
|
921 |
*/
|
|
|
922 |
|
|
|
923 |
static EXP apply_func_exp
|
|
|
924 |
PROTO_N ( ( a, args ) )
|
|
|
925 |
PROTO_T ( EXP a X LIST ( EXP ) args )
|
|
|
926 |
{
|
|
|
927 |
/* Find function type */
|
|
|
928 |
EXP e ;
|
|
|
929 |
TYPE ret ;
|
|
|
930 |
int mem = 0 ;
|
|
|
931 |
TYPE fn = DEREF_type ( exp_type ( a ) ) ;
|
|
|
932 |
CV_SPEC cv = DEREF_cv ( type_qual ( fn ) ) ;
|
|
|
933 |
if ( cv & cv_lvalue ) {
|
|
|
934 |
a = convert_lvalue ( a ) ;
|
|
|
935 |
fn = DEREF_type ( exp_type ( a ) ) ;
|
|
|
936 |
}
|
|
|
937 |
switch ( TAG_type ( fn ) ) {
|
|
|
938 |
case type_ptr_tag : {
|
|
|
939 |
fn = DEREF_type ( type_ptr_sub ( fn ) ) ;
|
|
|
940 |
break ;
|
|
|
941 |
}
|
|
|
942 |
case type_ptr_mem_tag : {
|
|
|
943 |
fn = DEREF_type ( type_ptr_mem_sub ( fn ) ) ;
|
|
|
944 |
break ;
|
|
|
945 |
}
|
|
|
946 |
}
|
|
|
947 |
|
|
|
948 |
/* Convert the arguments */
|
|
|
949 |
match_no_args = 0 ;
|
|
|
950 |
if ( IS_exp_call ( a ) ) mem = 1 ;
|
|
|
951 |
args = cast_args ( NULL_id, fn, NULL_graph, args, &ret, mem ) ;
|
|
|
952 |
if ( mem ) {
|
|
|
953 |
/* Record pointer to function member argument */
|
|
|
954 |
EXP c = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
955 |
TYPE t = DEREF_type ( exp_type ( c ) ) ;
|
|
|
956 |
MAKE_exp_dummy ( t, c, LINK_NONE, NULL_off, 1, c ) ;
|
|
|
957 |
COPY_exp ( exp_call_arg ( a ), c ) ;
|
|
|
958 |
COPY_exp ( HEAD_list ( args ), c ) ;
|
|
|
959 |
}
|
|
|
960 |
|
|
|
961 |
/* A function call is a side effect */
|
|
|
962 |
no_side_effects++ ;
|
|
|
963 |
|
|
|
964 |
/* Form the result */
|
|
|
965 |
MAKE_exp_func ( ret, a, args, e ) ;
|
|
|
966 |
if ( pass_complex_type ( ret ) ) {
|
|
|
967 |
/* Allow for complex return types */
|
|
|
968 |
EXP b ;
|
|
|
969 |
MAKE_exp_dummy ( ret, NULL_exp, LINK_NONE, NULL_off, 0, b ) ;
|
|
|
970 |
CONS_exp ( b, args, args ) ;
|
|
|
971 |
COPY_list ( exp_func_args ( e ), args ) ;
|
|
|
972 |
COPY_unsigned ( exp_func_extra ( e ), 1 ) ;
|
|
|
973 |
COPY_type ( exp_type ( e ), type_void ) ;
|
|
|
974 |
MAKE_exp_constr ( ret, e, b, b, DEFAULT_USR, e ) ;
|
|
|
975 |
}
|
|
|
976 |
|
|
|
977 |
/* Check for exception violations */
|
|
|
978 |
IGNORE check_func_throw ( fn, NULL_id ) ;
|
|
|
979 |
return ( e ) ;
|
|
|
980 |
}
|
|
|
981 |
|
|
|
982 |
|
|
|
983 |
/*
|
|
|
984 |
APPLY A TEMPLATE DEPENDENT FUNCTION
|
|
|
985 |
|
|
|
986 |
This routine constructs the template dependent function call
|
|
|
987 |
'a ( args )', or '( a ) ( args )' if is_paren is true.
|
|
|
988 |
*/
|
|
|
989 |
|
|
|
990 |
static EXP call_func_templ
|
|
|
991 |
PROTO_N ( ( a, args, is_paren ) )
|
|
|
992 |
PROTO_T ( EXP a X LIST ( EXP ) args X int is_paren )
|
|
|
993 |
{
|
|
|
994 |
EXP e ;
|
|
|
995 |
TYPE ret = type_templ_param ;
|
|
|
996 |
if ( is_paren ) a = make_paren_exp ( a ) ;
|
|
|
997 |
CONS_exp ( a, args, args ) ;
|
|
|
998 |
MAKE_exp_opn ( ret, lex_func_Hop, args, e ) ;
|
|
|
999 |
return ( e ) ;
|
|
|
1000 |
}
|
|
|
1001 |
|
|
|
1002 |
|
|
|
1003 |
/*
|
|
|
1004 |
CONSTRUCT A FUNCTION CALL EXPRESSION
|
|
|
1005 |
|
|
|
1006 |
This routine constructs the function call expression 'a ( args )'.
|
|
|
1007 |
*/
|
|
|
1008 |
|
|
|
1009 |
EXP make_func_exp
|
|
|
1010 |
PROTO_N ( ( a, args, rescan ) )
|
|
|
1011 |
PROTO_T ( EXP a X LIST ( EXP ) args X int rescan )
|
|
|
1012 |
{
|
|
|
1013 |
EXP e ;
|
|
|
1014 |
TYPE fn ;
|
|
|
1015 |
unsigned tag ;
|
|
|
1016 |
unsigned ftag ;
|
|
|
1017 |
int is_ptr = 0 ;
|
|
|
1018 |
int is_ptr_mem = 0 ;
|
|
|
1019 |
int is_paren = IS_exp_paren ( a ) ;
|
|
|
1020 |
|
|
|
1021 |
/* Do reference conversions */
|
|
|
1022 |
a = convert_reference ( a, REF_FUNCTION ) ;
|
|
|
1023 |
args = convert_args ( args ) ;
|
|
|
1024 |
|
|
|
1025 |
/* Map '&f' to 'f' */
|
|
|
1026 |
tag = TAG_exp ( a ) ;
|
|
|
1027 |
if ( tag == exp_address_tag ) {
|
|
|
1028 |
/* Non-member function */
|
|
|
1029 |
EXP b = DEREF_exp ( exp_address_arg ( a ) ) ;
|
|
|
1030 |
if ( IS_exp_identifier_etc ( b ) ) {
|
|
|
1031 |
a = b ;
|
|
|
1032 |
tag = TAG_exp ( a ) ;
|
|
|
1033 |
is_paren = 1 ;
|
|
|
1034 |
}
|
|
|
1035 |
} else if ( tag == exp_address_mem_tag ) {
|
|
|
1036 |
/* Member function (which better eventually be static) */
|
|
|
1037 |
EXP b = DEREF_exp ( exp_address_mem_arg ( a ) ) ;
|
|
|
1038 |
IDENTIFIER id = DEREF_id ( exp_member_id ( b ) ) ;
|
|
|
1039 |
if ( IS_id_function_etc ( id ) ) {
|
|
|
1040 |
while ( !IS_NULL_id ( id ) ) {
|
|
|
1041 |
if ( IS_id_mem_func ( id ) ) {
|
|
|
1042 |
report ( crt_loc, ERR_over_match_call_mem ( id ) ) ;
|
|
|
1043 |
break ;
|
|
|
1044 |
}
|
|
|
1045 |
id = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
1046 |
}
|
|
|
1047 |
a = b ;
|
|
|
1048 |
tag = TAG_exp ( a ) ;
|
|
|
1049 |
is_paren = 1 ;
|
|
|
1050 |
is_ptr_mem = 1 ;
|
|
|
1051 |
}
|
|
|
1052 |
}
|
|
|
1053 |
|
|
|
1054 |
/* Check function type */
|
|
|
1055 |
fn = DEREF_type ( exp_type ( a ) ) ;
|
|
|
1056 |
ftag = TAG_type ( fn ) ;
|
|
|
1057 |
#if LANGUAGE_CPP
|
|
|
1058 |
if ( ftag == type_compound_tag ) {
|
|
|
1059 |
/* Allow for overloading using 'operator ()' */
|
|
|
1060 |
if ( overload_depth == 0 ) {
|
|
|
1061 |
e = function_overload ( a, args ) ;
|
|
|
1062 |
return ( e ) ;
|
|
|
1063 |
}
|
|
|
1064 |
}
|
|
|
1065 |
#endif
|
|
|
1066 |
if ( ftag == type_ptr_tag ) {
|
|
|
1067 |
/* Allow for pointers to functions */
|
|
|
1068 |
fn = DEREF_type ( type_ptr_sub ( fn ) ) ;
|
|
|
1069 |
ftag = TAG_type ( fn ) ;
|
|
|
1070 |
is_ptr = 1 ;
|
|
|
1071 |
}
|
|
|
1072 |
while ( ftag == type_templ_tag ) {
|
|
|
1073 |
fn = DEREF_type ( type_templ_defn ( fn ) ) ;
|
|
|
1074 |
ftag = TAG_type ( fn ) ;
|
|
|
1075 |
}
|
|
|
1076 |
if ( ftag != type_func_tag ) {
|
|
|
1077 |
if ( ftag == type_token_tag && is_templ_type ( fn ) ) {
|
|
|
1078 |
/* Allow for template types */
|
|
|
1079 |
e = call_func_templ ( a, args, is_paren ) ;
|
|
|
1080 |
return ( e ) ;
|
|
|
1081 |
}
|
|
|
1082 |
if ( ftag != type_error_tag ) {
|
|
|
1083 |
/* Type should now be a function type */
|
|
|
1084 |
ERROR err ;
|
|
|
1085 |
if ( IS_exp_member ( a ) ) {
|
|
|
1086 |
IDENTIFIER id = DEREF_id ( exp_member_id ( a ) ) ;
|
|
|
1087 |
err = ERR_expr_prim_mem ( id ) ;
|
|
|
1088 |
} else {
|
|
|
1089 |
err = ERR_expr_call_op ( fn ) ;
|
|
|
1090 |
}
|
|
|
1091 |
if ( ftag == type_ptr_mem_tag && in_ptr_mem_selector ) {
|
|
|
1092 |
err = concat_error ( err, ERR_expr_mptr_oper_paren () ) ;
|
|
|
1093 |
}
|
|
|
1094 |
report ( crt_loc, err ) ;
|
|
|
1095 |
}
|
|
|
1096 |
e = make_error_exp ( 0 ) ;
|
|
|
1097 |
return ( e ) ;
|
|
|
1098 |
}
|
|
|
1099 |
|
|
|
1100 |
/* Deal with named functions */
|
|
|
1101 |
if ( !is_ptr ) {
|
|
|
1102 |
switch ( tag ) {
|
|
|
1103 |
|
|
|
1104 |
case exp_identifier_tag :
|
|
|
1105 |
case exp_member_tag :
|
|
|
1106 |
case exp_ambiguous_tag :
|
|
|
1107 |
case exp_undeclared_tag : {
|
|
|
1108 |
/* Normal functions, 'f' */
|
|
|
1109 |
int dep = 1 ;
|
|
|
1110 |
DECL_SPEC ds ;
|
|
|
1111 |
IDENTIFIER id ;
|
|
|
1112 |
QUALIFIER qual ;
|
|
|
1113 |
EXP extra = NULL_exp ;
|
|
|
1114 |
NAMESPACE ns = NULL_nspace ;
|
|
|
1115 |
int acc = crt_access_list.inherit ;
|
|
|
1116 |
id = DEREF_id ( exp_identifier_etc_id ( a ) ) ;
|
|
|
1117 |
qual = DEREF_qual ( exp_identifier_etc_qual ( a ) ) ;
|
|
|
1118 |
if ( rescan ) id = rescan_func_id ( id, qual ) ;
|
|
|
1119 |
if ( dependent_call ( id, args ) ) {
|
|
|
1120 |
/* Call depends on template argument */
|
|
|
1121 |
e = call_func_templ ( a, args, is_paren ) ;
|
|
|
1122 |
return ( e ) ;
|
|
|
1123 |
}
|
|
|
1124 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1125 |
if ( ds & dspec_instance ) dep = 0 ;
|
|
|
1126 |
if ( qual & qual_explicit ) dep = 0 ;
|
|
|
1127 |
if ( is_paren ) qual |= qual_mark ;
|
|
|
1128 |
switch ( TAG_id ( id ) ) {
|
|
|
1129 |
case id_mem_func_tag :
|
|
|
1130 |
case id_stat_mem_func_tag :
|
|
|
1131 |
mem_func_label : {
|
|
|
1132 |
/* Add argument for member functions */
|
|
|
1133 |
extra = make_this_ref ( &ns ) ;
|
|
|
1134 |
CONS_exp ( extra, args, args ) ;
|
|
|
1135 |
dep = 0 ;
|
|
|
1136 |
break ;
|
|
|
1137 |
}
|
|
|
1138 |
case id_ambig_tag : {
|
|
|
1139 |
/* Check for ambiguous member functions */
|
|
|
1140 |
CLASS_TYPE ct = parent_class ( id ) ;
|
|
|
1141 |
if ( !IS_NULL_ctype ( ct ) ) goto mem_func_label ;
|
|
|
1142 |
break ;
|
|
|
1143 |
}
|
|
|
1144 |
}
|
|
|
1145 |
id = resolve_call ( id, args, qual, dep ) ;
|
|
|
1146 |
switch ( TAG_id ( id ) ) {
|
|
|
1147 |
case id_function_tag : {
|
|
|
1148 |
/* Normal function call */
|
|
|
1149 |
break ;
|
|
|
1150 |
}
|
|
|
1151 |
case id_mem_func_tag : {
|
|
|
1152 |
/* Member function call */
|
|
|
1153 |
if ( is_ptr_mem ) {
|
|
|
1154 |
fn = DEREF_type ( id_mem_func_type ( id ) ) ;
|
|
|
1155 |
COPY_type ( exp_type ( a ), fn ) ;
|
|
|
1156 |
a = make_ref_exp ( a, 1 ) ;
|
|
|
1157 |
fn = DEREF_type ( exp_type ( a ) ) ;
|
|
|
1158 |
report ( crt_loc, ERR_expr_call_op ( fn ) ) ;
|
|
|
1159 |
}
|
|
|
1160 |
if ( IS_NULL_exp ( extra ) ) {
|
|
|
1161 |
/* No associated object */
|
|
|
1162 |
report ( crt_loc, ERR_expr_call_mem ( id ) ) ;
|
|
|
1163 |
} else {
|
|
|
1164 |
/* Indicate inherited member function */
|
|
|
1165 |
crt_access_list.inherit++ ;
|
|
|
1166 |
}
|
|
|
1167 |
break ;
|
|
|
1168 |
}
|
|
|
1169 |
case id_stat_mem_func_tag : {
|
|
|
1170 |
/* Static member function call */
|
|
|
1171 |
if ( !IS_NULL_exp ( extra ) ) {
|
|
|
1172 |
COPY_exp ( HEAD_list ( args ), NULL_exp ) ;
|
|
|
1173 |
}
|
|
|
1174 |
break ;
|
|
|
1175 |
}
|
|
|
1176 |
default : {
|
|
|
1177 |
/* Non-function called */
|
|
|
1178 |
if ( in_template_decl ) {
|
|
|
1179 |
e = call_func_templ ( a, args, is_paren ) ;
|
|
|
1180 |
} else {
|
|
|
1181 |
e = make_id_exp ( id ) ;
|
|
|
1182 |
if ( eq_exp ( e, a, 0 ) ) {
|
|
|
1183 |
e = make_error_exp ( 0 ) ;
|
|
|
1184 |
} else {
|
|
|
1185 |
e = make_func_exp ( e, args, 0 ) ;
|
|
|
1186 |
}
|
|
|
1187 |
}
|
|
|
1188 |
return ( e ) ;
|
|
|
1189 |
}
|
|
|
1190 |
}
|
|
|
1191 |
use_func_id ( id, 1, suppress_usage ) ;
|
|
|
1192 |
crt_access_list.inherit = acc ;
|
|
|
1193 |
if ( resolved_kind == KIND_CONSTR ) {
|
|
|
1194 |
e = apply_constr ( id, args ) ;
|
|
|
1195 |
} else {
|
|
|
1196 |
e = apply_func_id ( id, qual, NULL_graph, args ) ;
|
|
|
1197 |
}
|
|
|
1198 |
return ( e ) ;
|
|
|
1199 |
}
|
|
|
1200 |
|
|
|
1201 |
case exp_call_tag : {
|
|
|
1202 |
/* Member function selectors */
|
|
|
1203 |
EXP b = DEREF_exp ( exp_call_ptr ( a ) ) ;
|
|
|
1204 |
EXP c = DEREF_exp ( exp_call_arg ( a ) ) ;
|
|
|
1205 |
tag = TAG_exp ( b ) ;
|
|
|
1206 |
if ( tag == exp_identifier_tag || tag == exp_member_tag ) {
|
|
|
1207 |
/* Named function selector, 'c->f' */
|
|
|
1208 |
IDENTIFIER id ;
|
|
|
1209 |
QUALIFIER qual ;
|
|
|
1210 |
id = DEREF_id ( exp_identifier_etc_id ( b ) ) ;
|
|
|
1211 |
qual = DEREF_qual ( exp_identifier_etc_qual ( b ) ) ;
|
|
|
1212 |
if ( rescan ) id = rescan_func_id ( id, qual_nested ) ;
|
|
|
1213 |
if ( dependent_call ( id, args ) ) {
|
|
|
1214 |
e = call_func_templ ( a, args, is_paren ) ;
|
|
|
1215 |
} else {
|
|
|
1216 |
GRAPH gr = DEREF_graph ( exp_call_base ( a ) ) ;
|
|
|
1217 |
if ( is_paren ) qual |= qual_mark ;
|
|
|
1218 |
CONS_exp ( c, args, args ) ;
|
|
|
1219 |
id = resolve_call ( id, args, qual, 0 ) ;
|
|
|
1220 |
use_func_id ( id, 1, suppress_usage ) ;
|
|
|
1221 |
if ( resolved_kind == KIND_CONSTR ) {
|
|
|
1222 |
e = apply_constr ( id, args ) ;
|
|
|
1223 |
} else {
|
|
|
1224 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1225 |
e = apply_func_id ( id, qual, gr, args ) ;
|
|
|
1226 |
if ( !IS_hashid_name_etc ( nm ) ) {
|
|
|
1227 |
/* Check for extra arguments */
|
|
|
1228 |
int v = EXTRA_CONSTR ;
|
|
|
1229 |
CLASS_TYPE ct = parent_class ( id ) ;
|
|
|
1230 |
if ( IS_hashid_destr ( nm ) ) {
|
|
|
1231 |
v = EXTRA_DESTR ;
|
|
|
1232 |
}
|
|
|
1233 |
e = add_constr_args ( e, ct, v ) ;
|
|
|
1234 |
}
|
|
|
1235 |
}
|
|
|
1236 |
}
|
|
|
1237 |
return ( e ) ;
|
|
|
1238 |
}
|
|
|
1239 |
if ( tag == exp_undeclared_tag ) {
|
|
|
1240 |
/* Pseudo-destructor call, 'c->C::~C' */
|
|
|
1241 |
IDENTIFIER id = DEREF_id ( exp_undeclared_id ( b ) ) ;
|
|
|
1242 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1243 |
if ( !IS_NULL_list ( args ) ) {
|
|
|
1244 |
report ( crt_loc, ERR_expr_pseudo_args ( nm ) ) ;
|
|
|
1245 |
}
|
|
|
1246 |
e = trivial_destr ( c ) ;
|
|
|
1247 |
return ( e ) ;
|
|
|
1248 |
}
|
|
|
1249 |
/* Pointer to member function selector, 'a.*f' */
|
|
|
1250 |
CONS_exp ( c, args, args ) ;
|
|
|
1251 |
break ;
|
|
|
1252 |
}
|
|
|
1253 |
}
|
|
|
1254 |
}
|
|
|
1255 |
|
|
|
1256 |
/* Form the result for function expressions */
|
|
|
1257 |
e = apply_func_exp ( a, args ) ;
|
|
|
1258 |
return ( e ) ;
|
|
|
1259 |
}
|
|
|
1260 |
|
|
|
1261 |
|
|
|
1262 |
/*
|
|
|
1263 |
SHOULD A FUNCTION RETURN VALUE BE IGNORED?
|
|
|
1264 |
|
|
|
1265 |
This routine checks whether a function consisting of 'return e ;'
|
|
|
1266 |
should be inlined.
|
|
|
1267 |
*/
|
|
|
1268 |
|
|
|
1269 |
static EXP check_inline_return
|
|
|
1270 |
PROTO_N ( ( e, ret ) )
|
|
|
1271 |
PROTO_T ( EXP e X TYPE ret )
|
|
|
1272 |
{
|
|
|
1273 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
1274 |
/* No value returned */
|
|
|
1275 |
MAKE_exp_value ( ret, e ) ;
|
|
|
1276 |
return ( e ) ;
|
|
|
1277 |
}
|
|
|
1278 |
if ( is_const_exp ( e, -1 ) ) {
|
|
|
1279 |
/* Constant expression returned */
|
|
|
1280 |
MAKE_exp_copy ( ret, e, e ) ;
|
|
|
1281 |
return ( e ) ;
|
|
|
1282 |
}
|
|
|
1283 |
return ( NULL_exp ) ;
|
|
|
1284 |
}
|
|
|
1285 |
|
|
|
1286 |
|
|
|
1287 |
/*
|
|
|
1288 |
SHOULD A FUNCTION CALL BE INLINED?
|
|
|
1289 |
|
|
|
1290 |
Function inlining is generally left to the installers which have a
|
|
|
1291 |
far better idea of whether a function should be inlined than the
|
|
|
1292 |
producer. This routine checks whether the function call 'id ( args )'
|
|
|
1293 |
should be inlined by the producer. This is generally done on the
|
|
|
1294 |
basis of code size rather than efficiency. If so it returns the result
|
|
|
1295 |
expression. Otherwise the null expression is returned.
|
|
|
1296 |
*/
|
|
|
1297 |
|
|
|
1298 |
EXP check_inline
|
|
|
1299 |
PROTO_N ( ( id, args, ret ) )
|
|
|
1300 |
PROTO_T ( IDENTIFIER id X LIST ( EXP ) args X TYPE ret )
|
|
|
1301 |
{
|
|
|
1302 |
while ( !IS_NULL_list ( args ) ) {
|
|
|
1303 |
/* Check argument list */
|
|
|
1304 |
EXP a = DEREF_exp ( HEAD_list ( args ) ) ;
|
|
|
1305 |
if ( !IS_NULL_exp ( a ) ) return ( NULL_exp ) ;
|
|
|
1306 |
args = TAIL_list ( args ) ;
|
|
|
1307 |
}
|
|
|
1308 |
if ( IS_id_function_etc ( id ) ) {
|
|
|
1309 |
/* Check function definition */
|
|
|
1310 |
EXP e = DEREF_exp ( id_function_etc_defn ( id ) ) ;
|
|
|
1311 |
if ( !IS_NULL_exp ( e ) && IS_exp_sequence ( e ) ) {
|
|
|
1312 |
LIST ( EXP ) p = DEREF_list ( exp_sequence_first ( e ) ) ;
|
|
|
1313 |
p = TAIL_list ( p ) ;
|
|
|
1314 |
if ( IS_NULL_list ( p ) ) {
|
|
|
1315 |
/* Empty function definition */
|
|
|
1316 |
e = check_inline_return ( NULL_exp, ret ) ;
|
|
|
1317 |
return ( e ) ;
|
|
|
1318 |
}
|
|
|
1319 |
e = DEREF_exp ( HEAD_list ( p ) ) ;
|
|
|
1320 |
p = TAIL_list ( p ) ;
|
|
|
1321 |
if ( IS_NULL_list ( p ) ) {
|
|
|
1322 |
if ( !IS_NULL_exp ( e ) && IS_exp_location ( e ) ) {
|
|
|
1323 |
/* Step over location marker */
|
|
|
1324 |
e = DEREF_exp ( exp_location_arg ( e ) ) ;
|
|
|
1325 |
}
|
|
|
1326 |
if ( !IS_NULL_exp ( e ) && IS_exp_return_stmt ( e ) ) {
|
|
|
1327 |
/* Single return statement */
|
|
|
1328 |
e = DEREF_exp ( exp_return_stmt_value ( e ) ) ;
|
|
|
1329 |
e = check_inline_return ( e, ret ) ;
|
|
|
1330 |
return ( e ) ;
|
|
|
1331 |
}
|
|
|
1332 |
}
|
|
|
1333 |
}
|
|
|
1334 |
}
|
|
|
1335 |
return ( NULL_exp ) ;
|
|
|
1336 |
}
|
|
|
1337 |
|
|
|
1338 |
|
|
|
1339 |
/*
|
|
|
1340 |
CHECK FOR COMPLEX FUNCTION RETURN OR ARGUMENT TYPE
|
|
|
1341 |
|
|
|
1342 |
This routine checks whether t is a complex function return or argument
|
|
|
1343 |
type, that is to say a class type with a non-trivial constructor,
|
|
|
1344 |
destructor, or assignment operator. The calling convention implemented
|
|
|
1345 |
is that such values are returned by means of a reference which is
|
|
|
1346 |
passed to the function as the first argument, and that such values
|
|
|
1347 |
are passed as arguments as a reference to a copy.
|
|
|
1348 |
*/
|
|
|
1349 |
|
|
|
1350 |
int pass_complex_type
|
|
|
1351 |
PROTO_N ( ( t ) )
|
|
|
1352 |
PROTO_T ( TYPE t )
|
|
|
1353 |
{
|
|
|
1354 |
if ( !IS_NULL_type ( t ) && IS_type_compound ( t ) ) {
|
|
|
1355 |
CLASS_TYPE ct = DEREF_ctype ( type_compound_defn ( t ) ) ;
|
|
|
1356 |
CLASS_INFO ci = DEREF_cinfo ( ctype_info ( ct ) ) ;
|
|
|
1357 |
CLASS_INFO cj = ( ci & cinfo_trivial ) ;
|
|
|
1358 |
if ( cj != cinfo_trivial ) return ( 1 ) ;
|
|
|
1359 |
}
|
|
|
1360 |
return ( 0 ) ;
|
|
|
1361 |
}
|
|
|
1362 |
|
|
|
1363 |
|
|
|
1364 |
/*
|
|
|
1365 |
CHECK A FUNCTION RETURN OR PARAMETER TYPE
|
|
|
1366 |
|
|
|
1367 |
This routine checks whether the type just constructed by the parser
|
|
|
1368 |
contains type definitions and so is not suitable for use as a function
|
|
|
1369 |
return or parameter type (as indicated by par). The necessary
|
|
|
1370 |
information is stored in the global variable have_type_declaration.
|
|
|
1371 |
*/
|
|
|
1372 |
|
|
|
1373 |
void func_type_defn
|
|
|
1374 |
PROTO_N ( ( par ) )
|
|
|
1375 |
PROTO_T ( int par )
|
|
|
1376 |
{
|
|
|
1377 |
int td = have_type_declaration ;
|
|
|
1378 |
if ( td == TYPE_DECL_NORMAL || td == TYPE_DECL_ANON ) {
|
|
|
1379 |
if ( par ) {
|
|
|
1380 |
report ( crt_loc, ERR_dcl_fct_typedef_par () ) ;
|
|
|
1381 |
} else {
|
|
|
1382 |
report ( crt_loc, ERR_dcl_fct_typedef_ret () ) ;
|
|
|
1383 |
}
|
|
|
1384 |
}
|
|
|
1385 |
return ;
|
|
|
1386 |
}
|
|
|
1387 |
|
|
|
1388 |
|
|
|
1389 |
/*
|
|
|
1390 |
CREATE A PARAMETER TYPE
|
|
|
1391 |
|
|
|
1392 |
This routine creates the parameter type for a function or template
|
|
|
1393 |
parameter (as indicated by loc) declared with type t. Thus functions
|
|
|
1394 |
and, for function parameters, arrays are converted to pointers.
|
|
|
1395 |
*/
|
|
|
1396 |
|
|
|
1397 |
TYPE make_param_type
|
|
|
1398 |
PROTO_N ( ( t, loc ) )
|
|
|
1399 |
PROTO_T ( TYPE t X int loc )
|
|
|
1400 |
{
|
|
|
1401 |
switch ( TAG_type ( t ) ) {
|
|
|
1402 |
case type_func_tag : {
|
|
|
1403 |
/* Function parameters are adjusted to pointers */
|
|
|
1404 |
member_func_type ( NULL_ctype, id_parameter_tag, t ) ;
|
|
|
1405 |
check_weak_func ( t, 0 ) ;
|
|
|
1406 |
MAKE_type_ptr ( cv_none, t, t ) ;
|
|
|
1407 |
break ;
|
|
|
1408 |
}
|
|
|
1409 |
case type_array_tag : {
|
|
|
1410 |
/* Array parameters are adjusted to pointers */
|
|
|
1411 |
if ( loc == CONTEXT_PARAMETER || loc == CONTEXT_WEAK_PARAM ) {
|
|
|
1412 |
t = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
1413 |
MAKE_type_ptr ( cv_none, t, t ) ;
|
|
|
1414 |
}
|
|
|
1415 |
break ;
|
|
|
1416 |
}
|
|
|
1417 |
}
|
|
|
1418 |
return ( t ) ;
|
|
|
1419 |
}
|
|
|
1420 |
|
|
|
1421 |
|
|
|
1422 |
/*
|
|
|
1423 |
CHECK A PARAMETER TYPE
|
|
|
1424 |
|
|
|
1425 |
A parameter cannot include a type of the form pointer to unbound array
|
|
|
1426 |
or reference to unbound array. This routine returns an error if the type
|
|
|
1427 |
t includes a type of this form. Strictly the parameters of any function
|
|
|
1428 |
components should also be checked, but these will have already been
|
|
|
1429 |
handled by a previous check.
|
|
|
1430 |
*/
|
|
|
1431 |
|
|
|
1432 |
ERROR check_param_type
|
|
|
1433 |
PROTO_N ( ( id, t ) )
|
|
|
1434 |
PROTO_T ( IDENTIFIER id X TYPE t )
|
|
|
1435 |
{
|
|
|
1436 |
TYPE s = t ;
|
|
|
1437 |
int state = 0 ;
|
|
|
1438 |
while ( !IS_NULL_type ( s ) ) {
|
|
|
1439 |
switch ( TAG_type ( s ) ) {
|
|
|
1440 |
case type_top_tag :
|
|
|
1441 |
case type_bottom_tag : {
|
|
|
1442 |
/* Void types */
|
|
|
1443 |
if ( state ) return ( NULL_err ) ;
|
|
|
1444 |
return ( ERR_dcl_fct_par_void ( id, t ) ) ;
|
|
|
1445 |
}
|
|
|
1446 |
case type_ptr_tag :
|
|
|
1447 |
case type_ref_tag : {
|
|
|
1448 |
/* Pointer and reference types */
|
|
|
1449 |
s = DEREF_type ( type_ptr_etc_sub ( s ) ) ;
|
|
|
1450 |
state = 1 ;
|
|
|
1451 |
break ;
|
|
|
1452 |
}
|
|
|
1453 |
case type_array_tag : {
|
|
|
1454 |
/* Array types */
|
|
|
1455 |
if ( state ) {
|
|
|
1456 |
NAT n = DEREF_nat ( type_array_size ( s ) ) ;
|
|
|
1457 |
if ( IS_NULL_nat ( n ) ) {
|
|
|
1458 |
return ( ERR_dcl_fct_par_array ( id, t ) ) ;
|
|
|
1459 |
}
|
|
|
1460 |
}
|
|
|
1461 |
s = DEREF_type ( type_array_sub ( s ) ) ;
|
|
|
1462 |
state = 0 ;
|
|
|
1463 |
break ;
|
|
|
1464 |
}
|
|
|
1465 |
default : {
|
|
|
1466 |
/* Other types */
|
|
|
1467 |
return ( NULL_err ) ;
|
|
|
1468 |
}
|
|
|
1469 |
}
|
|
|
1470 |
}
|
|
|
1471 |
return ( NULL_err ) ;
|
|
|
1472 |
}
|
|
|
1473 |
|
|
|
1474 |
|
|
|
1475 |
/*
|
|
|
1476 |
ADJUST A FUNCTION LINKAGE
|
|
|
1477 |
|
|
|
1478 |
This routine adjusts the function linkage specifier cv to include
|
|
|
1479 |
the current linkage specifier.
|
|
|
1480 |
*/
|
|
|
1481 |
|
|
|
1482 |
CV_SPEC func_linkage
|
|
|
1483 |
PROTO_N ( ( cv ) )
|
|
|
1484 |
PROTO_T ( CV_SPEC cv )
|
|
|
1485 |
{
|
|
|
1486 |
DECL_SPEC ln = crt_linkage ;
|
|
|
1487 |
if ( ln ) {
|
|
|
1488 |
if ( ln & dspec_c ) cv |= cv_c ;
|
|
|
1489 |
if ( ln & dspec_cpp ) cv |= cv_cpp ;
|
|
|
1490 |
}
|
|
|
1491 |
return ( cv ) ;
|
|
|
1492 |
}
|
|
|
1493 |
|
|
|
1494 |
|
|
|
1495 |
/*
|
|
|
1496 |
CREATE A LIST OF FUNCTION PARAMETER TYPES
|
|
|
1497 |
|
|
|
1498 |
This routine constructs the function type with parameter declarations
|
|
|
1499 |
given by the current namespace and const-volatile qualifiers cv. The
|
|
|
1500 |
kind of function is given by ell, which is a combination of the
|
|
|
1501 |
FUNC_* values defined in function.h. The function return type is
|
|
|
1502 |
usually filled in later (by inject_pre_type) but may be specified
|
|
|
1503 |
by r. Note that function and array parameters have already been
|
|
|
1504 |
adjusted to pointers by make_param_decl.
|
|
|
1505 |
*/
|
|
|
1506 |
|
|
|
1507 |
TYPE make_func_type
|
|
|
1508 |
PROTO_N ( ( r, ell, cv, ex ) )
|
|
|
1509 |
PROTO_T ( TYPE r X int ell X CV_SPEC cv X LIST ( TYPE ) ex )
|
|
|
1510 |
{
|
|
|
1511 |
int no_param = 0 ;
|
|
|
1512 |
TYPE t = NULL_type ;
|
|
|
1513 |
LIST ( IDENTIFIER ) p1 ;
|
|
|
1514 |
IDENTIFIER id = NULL_id ;
|
|
|
1515 |
LIST ( TYPE ) q = NULL_list ( TYPE ) ;
|
|
|
1516 |
LIST ( IDENTIFIER ) p = NULL_list ( IDENTIFIER ) ;
|
|
|
1517 |
|
|
|
1518 |
/* Get parameter declarations */
|
|
|
1519 |
NAMESPACE ns = crt_namespace ;
|
|
|
1520 |
MEMBER mem = DEREF_member ( nspace_last ( ns ) ) ;
|
|
|
1521 |
|
|
|
1522 |
/* Build up parameter type list (deleting cv-qualifiers) */
|
|
|
1523 |
while ( !IS_NULL_member ( mem ) ) {
|
|
|
1524 |
id = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1525 |
if ( !IS_NULL_id ( id ) && IS_id_parameter ( id ) ) {
|
|
|
1526 |
t = DEREF_type ( id_parameter_type ( id ) ) ;
|
|
|
1527 |
if ( ( ell & FUNC_WEAK ) && !is_arg_promote ( t ) ) {
|
|
|
1528 |
DECL_SPEC ds ;
|
|
|
1529 |
t = arg_promote_type ( t, KILL_err ) ;
|
|
|
1530 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1531 |
ds |= dspec_virtual ;
|
|
|
1532 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
1533 |
}
|
|
|
1534 |
t = qualify_type ( t, cv_none, 0 ) ;
|
|
|
1535 |
CONS_type ( t, q, q ) ;
|
|
|
1536 |
CONS_id ( id, p, p ) ;
|
|
|
1537 |
no_param++ ;
|
|
|
1538 |
}
|
|
|
1539 |
mem = DEREF_member ( member_next ( mem ) ) ;
|
|
|
1540 |
}
|
|
|
1541 |
|
|
|
1542 |
/* Check for non-prototype functions */
|
|
|
1543 |
if ( IS_NULL_type ( r ) ) {
|
|
|
1544 |
if ( ell & FUNC_NON_PROTO ) {
|
|
|
1545 |
report ( crt_loc, ERR_dcl_fct_nonproto () ) ;
|
|
|
1546 |
if ( ell == FUNC_WEAK && no_param == 0 ) {
|
|
|
1547 |
/* Can't have 't weak ()' */
|
|
|
1548 |
report ( crt_loc, ERR_dcl_fct_par_weak () ) ;
|
|
|
1549 |
}
|
|
|
1550 |
#if LANGUAGE_CPP
|
|
|
1551 |
ell &= FUNC_ELLIPSIS ;
|
|
|
1552 |
#endif
|
|
|
1553 |
} else {
|
|
|
1554 |
report ( crt_loc, ERR_dcl_fct_proto () ) ;
|
|
|
1555 |
}
|
|
|
1556 |
}
|
|
|
1557 |
|
|
|
1558 |
/* Check for '( ... )' */
|
|
|
1559 |
if ( no_param == 0 && ( ell & FUNC_ELLIPSIS ) ) {
|
|
|
1560 |
report ( crt_loc, ERR_dcl_fct_par_ellipsis () ) ;
|
|
|
1561 |
}
|
|
|
1562 |
|
|
|
1563 |
/* Check for '( void )' */
|
|
|
1564 |
if ( no_param == 1 && !( ell & FUNC_ELLIPSIS ) ) {
|
|
|
1565 |
/* Precisely one parameter (in t and id) */
|
|
|
1566 |
if ( IS_type_top ( t ) ) {
|
|
|
1567 |
HASHID nm = DEREF_hashid ( id_name ( id ) ) ;
|
|
|
1568 |
if ( !IS_hashid_anon ( nm ) ) {
|
|
|
1569 |
report ( crt_loc, ERR_dcl_fct_par_empty () ) ;
|
|
|
1570 |
}
|
|
|
1571 |
DESTROY_list ( q, SIZE_type ) ;
|
|
|
1572 |
DESTROY_list ( p, SIZE_id ) ;
|
|
|
1573 |
q = NULL_list ( TYPE ) ;
|
|
|
1574 |
p = NULL_list ( IDENTIFIER ) ;
|
|
|
1575 |
}
|
|
|
1576 |
}
|
|
|
1577 |
|
|
|
1578 |
/* Check for other void parameters */
|
|
|
1579 |
p1 = p ;
|
|
|
1580 |
while ( !IS_NULL_list ( p1 ) ) {
|
|
|
1581 |
ERROR err ;
|
|
|
1582 |
id = DEREF_id ( HEAD_list ( p1 ) ) ;
|
|
|
1583 |
t = DEREF_type ( id_parameter_type ( id ) ) ;
|
|
|
1584 |
err = check_param_type ( id, t ) ;
|
|
|
1585 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1586 |
/* Void or other illegal parameter type */
|
|
|
1587 |
report ( crt_loc, err ) ;
|
|
|
1588 |
}
|
|
|
1589 |
p1 = TAIL_list ( p1 ) ;
|
|
|
1590 |
}
|
|
|
1591 |
|
|
|
1592 |
/* Construct the function type */
|
|
|
1593 |
MAKE_type_func ( cv_none, r, q, ell, cv, q, ns, p, ex, t ) ;
|
|
|
1594 |
return ( t ) ;
|
|
|
1595 |
}
|
|
|
1596 |
|
|
|
1597 |
|
|
|
1598 |
/*
|
|
|
1599 |
ADJUST MEMBER FUNCTION TYPES
|
|
|
1600 |
|
|
|
1601 |
Each function type has two lists of parameter types, ptypes, which
|
|
|
1602 |
gives the actual declared parameters, and mtypes, which has an extra
|
|
|
1603 |
reference to class parameter for non-static member functions, or an
|
|
|
1604 |
extra null parameter for static member functions. This routine sets
|
|
|
1605 |
the mtypes field of t from the ptypes field according to whether or not
|
|
|
1606 |
ct is the null class and the tag of an associated declaration, itag.
|
|
|
1607 |
Note that member function types always have C++ linkage.
|
|
|
1608 |
*/
|
|
|
1609 |
|
|
|
1610 |
void member_func_type
|
|
|
1611 |
PROTO_N ( ( ct, itag, t ) )
|
|
|
1612 |
PROTO_T ( CLASS_TYPE ct X unsigned itag X TYPE t )
|
|
|
1613 |
{
|
|
|
1614 |
unsigned tag = TAG_type ( t ) ;
|
|
|
1615 |
while ( tag == type_templ_tag ) {
|
|
|
1616 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1617 |
tag = TAG_type ( t ) ;
|
|
|
1618 |
}
|
|
|
1619 |
if ( tag == type_func_tag ) {
|
|
|
1620 |
CV_SPEC cv = DEREF_cv ( type_func_mqual ( t ) ) ;
|
|
|
1621 |
CV_SPEC qual = ( cv & cv_qual ) ;
|
|
|
1622 |
LIST ( TYPE ) ptypes = DEREF_list ( type_func_ptypes ( t ) ) ;
|
|
|
1623 |
LIST ( TYPE ) mtypes = DEREF_list ( type_func_mtypes ( t ) ) ;
|
|
|
1624 |
if ( IS_NULL_ctype ( ct ) ) {
|
|
|
1625 |
/* Non-member functions */
|
|
|
1626 |
if ( qual && itag != id_type_alias_tag ) {
|
|
|
1627 |
/* Can't have cv-qualifiers */
|
|
|
1628 |
report ( crt_loc, ERR_dcl_fct_cv ( qual ) ) ;
|
|
|
1629 |
cv &= ~cv_qual ;
|
|
|
1630 |
COPY_cv ( type_func_mqual ( t ), cv ) ;
|
|
|
1631 |
}
|
|
|
1632 |
if ( !EQ_list ( ptypes, mtypes ) ) {
|
|
|
1633 |
/* Set mtypes equal to ptypes */
|
|
|
1634 |
COPY_list ( type_func_mtypes ( t ), ptypes ) ;
|
|
|
1635 |
}
|
|
|
1636 |
} else {
|
|
|
1637 |
/* Member functions */
|
|
|
1638 |
if ( EQ_list ( ptypes, mtypes ) ) {
|
|
|
1639 |
/* Add extra argument to mtypes */
|
|
|
1640 |
TYPE r ;
|
|
|
1641 |
if ( itag == id_mem_func_tag ) {
|
|
|
1642 |
IDENTIFIER cid = DEREF_id ( ctype_name ( ct ) ) ;
|
|
|
1643 |
cv = ( qual | cv_cpp ) ;
|
|
|
1644 |
qual |= cv_lvalue ;
|
|
|
1645 |
MAKE_type_compound ( qual, ct, r ) ;
|
|
|
1646 |
COPY_id ( type_name ( r ), cid ) ;
|
|
|
1647 |
MAKE_type_ref ( cv_none, r, r ) ;
|
|
|
1648 |
} else {
|
|
|
1649 |
if ( qual ) {
|
|
|
1650 |
/* Can't have cv-qualifiers */
|
|
|
1651 |
report ( crt_loc, ERR_dcl_fct_cv ( qual ) ) ;
|
|
|
1652 |
}
|
|
|
1653 |
r = NULL_type ;
|
|
|
1654 |
cv = cv_cpp ;
|
|
|
1655 |
}
|
|
|
1656 |
CONS_type ( r, ptypes, mtypes ) ;
|
|
|
1657 |
COPY_list ( type_func_mtypes ( t ), mtypes ) ;
|
|
|
1658 |
COPY_cv ( type_func_mqual ( t ), cv ) ;
|
|
|
1659 |
} else {
|
|
|
1660 |
/* Don't check existing extra argument */
|
|
|
1661 |
/* EMPTY */
|
|
|
1662 |
}
|
|
|
1663 |
}
|
|
|
1664 |
}
|
|
|
1665 |
return ;
|
|
|
1666 |
}
|
|
|
1667 |
|
|
|
1668 |
|
|
|
1669 |
/*
|
|
|
1670 |
CHECK A NON-PROTOTYPE FUNCTION TYPE
|
|
|
1671 |
|
|
|
1672 |
A parameter list can only be used in a function definition. This
|
|
|
1673 |
routine checks the function type t with def being true for a function
|
|
|
1674 |
definition.
|
|
|
1675 |
*/
|
|
|
1676 |
|
|
|
1677 |
void check_weak_func
|
|
|
1678 |
PROTO_N ( ( t, def ) )
|
|
|
1679 |
PROTO_T ( TYPE t X int def )
|
|
|
1680 |
{
|
|
|
1681 |
int ell = DEREF_int ( type_func_ellipsis ( t ) ) ;
|
|
|
1682 |
if ( ell == FUNC_PARAMS ) {
|
|
|
1683 |
/* Have parameter list '( a1, a2, ..., an )' */
|
|
|
1684 |
if ( def ) {
|
|
|
1685 |
LOCATION loc ;
|
|
|
1686 |
LIST ( TYPE ) q = NULL_list ( TYPE ) ;
|
|
|
1687 |
LIST ( IDENTIFIER ) p = DEREF_list ( type_func_pids ( t ) ) ;
|
|
|
1688 |
NAMESPACE ns = DEREF_nspace ( type_func_pars ( t ) ) ;
|
|
|
1689 |
MEMBER mem = DEREF_member ( nspace_last ( ns ) ) ;
|
|
|
1690 |
loc = decl_loc ;
|
|
|
1691 |
bad_crt_loc++ ;
|
|
|
1692 |
while ( !IS_NULL_member ( mem ) ) {
|
|
|
1693 |
IDENTIFIER id = DEREF_id ( member_id ( mem ) ) ;
|
|
|
1694 |
if ( !IS_NULL_id ( id ) ) {
|
|
|
1695 |
if ( IS_id_weak_param ( id ) ) {
|
|
|
1696 |
/* Implicitly declare parameter */
|
|
|
1697 |
ERROR err ;
|
|
|
1698 |
TYPE s = type_sint ;
|
|
|
1699 |
int par = CONTEXT_WEAK_PARAM ;
|
|
|
1700 |
DEREF_loc ( id_loc ( id ), decl_loc ) ;
|
|
|
1701 |
id = make_param_decl ( dspec_none, s, id, par ) ;
|
|
|
1702 |
init_param ( id, NULL_exp ) ;
|
|
|
1703 |
err = ERR_dcl_fct_par_impl ( id ) ;
|
|
|
1704 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1705 |
ERROR err2 = ERR_dcl_type_infer ( s ) ;
|
|
|
1706 |
err = concat_error ( err, err2 ) ;
|
|
|
1707 |
report ( decl_loc, err ) ;
|
|
|
1708 |
}
|
|
|
1709 |
CONS_id ( id, p, p ) ;
|
|
|
1710 |
CONS_type ( s, q, q ) ;
|
|
|
1711 |
} else if ( IS_id_parameter ( id ) ) {
|
|
|
1712 |
/* Add parameter to list */
|
|
|
1713 |
TYPE s = DEREF_type ( id_parameter_type ( id ) ) ;
|
|
|
1714 |
if ( !is_arg_promote ( s ) ) {
|
|
|
1715 |
DECL_SPEC ds ;
|
|
|
1716 |
s = arg_promote_type ( s, KILL_err ) ;
|
|
|
1717 |
ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
1718 |
ds |= dspec_virtual ;
|
|
|
1719 |
COPY_dspec ( id_storage ( id ), ds ) ;
|
|
|
1720 |
}
|
|
|
1721 |
s = qualify_type ( s, cv_none, 0 ) ;
|
|
|
1722 |
CONS_id ( id, p, p ) ;
|
|
|
1723 |
CONS_type ( s, q, q ) ;
|
|
|
1724 |
}
|
|
|
1725 |
}
|
|
|
1726 |
mem = DEREF_member ( member_next ( mem ) ) ;
|
|
|
1727 |
}
|
|
|
1728 |
COPY_list ( type_func_ptypes ( t ), q ) ;
|
|
|
1729 |
COPY_list ( type_func_mtypes ( t ), q ) ;
|
|
|
1730 |
COPY_list ( type_func_pids ( t ), p ) ;
|
|
|
1731 |
bad_crt_loc-- ;
|
|
|
1732 |
decl_loc = loc ;
|
|
|
1733 |
ell = FUNC_WEAK_PARAMS ;
|
|
|
1734 |
} else {
|
|
|
1735 |
report ( crt_loc, ERR_dcl_fct_weak () ) ;
|
|
|
1736 |
ell = FUNC_NO_PARAMS ;
|
|
|
1737 |
}
|
|
|
1738 |
} else if ( ell == FUNC_NO_PARAMS ) {
|
|
|
1739 |
/* Have empty parameter list '()' */
|
|
|
1740 |
if ( def ) ell = FUNC_WEAK_PARAMS ;
|
|
|
1741 |
}
|
|
|
1742 |
COPY_int ( type_func_ellipsis ( t ), ell ) ;
|
|
|
1743 |
return ;
|
|
|
1744 |
}
|
|
|
1745 |
|
|
|
1746 |
|
|
|
1747 |
/*
|
|
|
1748 |
CHECK THE FUNCTION COMPONENTS OF AN OBJECT TYPE
|
|
|
1749 |
|
|
|
1750 |
This routine checks the function components of an object with the
|
|
|
1751 |
given identifier tag and type t.
|
|
|
1752 |
*/
|
|
|
1753 |
|
|
|
1754 |
void object_type
|
|
|
1755 |
PROTO_N ( ( t, tag ) )
|
|
|
1756 |
PROTO_T ( TYPE t X unsigned tag )
|
|
|
1757 |
{
|
|
|
1758 |
int depth = 0 ;
|
|
|
1759 |
if ( tag == id_type_alias_tag || tag == null_tag ) {
|
|
|
1760 |
/* Force errors in these cases */
|
|
|
1761 |
depth = 2 ;
|
|
|
1762 |
}
|
|
|
1763 |
while ( !IS_NULL_type ( t ) ) {
|
|
|
1764 |
ASSERT ( ORDER_type == 18 ) ;
|
|
|
1765 |
switch ( TAG_type ( t ) ) {
|
|
|
1766 |
case type_func_tag : {
|
|
|
1767 |
/* Function types */
|
|
|
1768 |
LIST ( TYPE ) ex ;
|
|
|
1769 |
CV_SPEC cv = DEREF_cv ( type_func_mqual ( t ) ) ;
|
|
|
1770 |
|
|
|
1771 |
/* Check function qualifiers */
|
|
|
1772 |
CV_SPEC mq = ( cv & cv_qual ) ;
|
|
|
1773 |
CV_SPEC lq = ( cv & cv_language ) ;
|
|
|
1774 |
if ( depth == 0 ) {
|
|
|
1775 |
if ( tag == id_mem_func_tag ) {
|
|
|
1776 |
/* Member functions have C++ linkage */
|
|
|
1777 |
lq = cv_cpp ;
|
|
|
1778 |
} else {
|
|
|
1779 |
if ( mq ) {
|
|
|
1780 |
/* Can't have cv-qualifiers */
|
|
|
1781 |
report ( crt_loc, ERR_dcl_fct_cv_decl ( mq ) ) ;
|
|
|
1782 |
mq = cv_none ;
|
|
|
1783 |
}
|
|
|
1784 |
if ( tag == id_stat_mem_func_tag ) {
|
|
|
1785 |
/* Member functions have C++ linkage */
|
|
|
1786 |
lq = cv_cpp ;
|
|
|
1787 |
}
|
|
|
1788 |
}
|
|
|
1789 |
}
|
|
|
1790 |
if ( lq == cv_none ) lq = cv_lang ;
|
|
|
1791 |
COPY_cv ( type_func_mqual ( t ), ( mq | lq ) ) ;
|
|
|
1792 |
|
|
|
1793 |
/* Check default arguments */
|
|
|
1794 |
if ( depth && check_func_dargs ( t, 0, 0 ) ) {
|
|
|
1795 |
report ( crt_loc, ERR_dcl_fct_default_bad () ) ;
|
|
|
1796 |
}
|
|
|
1797 |
|
|
|
1798 |
/* Check exception specifiers */
|
|
|
1799 |
ex = DEREF_list ( type_func_except ( t ) ) ;
|
|
|
1800 |
if ( !EQ_list ( ex, empty_type_set ) ) {
|
|
|
1801 |
if ( !EQ_list ( ex, univ_type_set ) ) {
|
|
|
1802 |
ulong n = ( ulong ) LENGTH_list ( ex ) ;
|
|
|
1803 |
IGNORE check_value ( OPT_VAL_exception_specs, n ) ;
|
|
|
1804 |
}
|
|
|
1805 |
if ( depth > 1 ) {
|
|
|
1806 |
report ( crt_loc, ERR_except_spec_bad () ) ;
|
|
|
1807 |
}
|
|
|
1808 |
}
|
|
|
1809 |
|
|
|
1810 |
/* Recheck parameter types */
|
|
|
1811 |
if ( depth > 1 ) {
|
|
|
1812 |
LIST ( TYPE ) p ;
|
|
|
1813 |
p = DEREF_list ( type_func_ptypes ( t ) ) ;
|
|
|
1814 |
while ( !IS_NULL_list ( p ) ) {
|
|
|
1815 |
TYPE s = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
1816 |
s = find_func_type ( s ) ;
|
|
|
1817 |
if ( !IS_NULL_type ( s ) ) {
|
|
|
1818 |
ex = DEREF_list ( type_func_except ( s ) ) ;
|
|
|
1819 |
if ( !EQ_list ( ex, empty_type_set ) ) {
|
|
|
1820 |
report ( crt_loc, ERR_except_spec_bad () ) ;
|
|
|
1821 |
}
|
|
|
1822 |
}
|
|
|
1823 |
p = TAIL_list ( p ) ;
|
|
|
1824 |
}
|
|
|
1825 |
}
|
|
|
1826 |
return ;
|
|
|
1827 |
}
|
|
|
1828 |
case type_ptr_tag : {
|
|
|
1829 |
t = DEREF_type ( type_ptr_sub ( t ) ) ;
|
|
|
1830 |
depth++ ;
|
|
|
1831 |
break ;
|
|
|
1832 |
}
|
|
|
1833 |
case type_ref_tag : {
|
|
|
1834 |
t = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
1835 |
break ;
|
|
|
1836 |
}
|
|
|
1837 |
case type_ptr_mem_tag : {
|
|
|
1838 |
t = DEREF_type ( type_ptr_mem_sub ( t ) ) ;
|
|
|
1839 |
depth++ ;
|
|
|
1840 |
break ;
|
|
|
1841 |
}
|
|
|
1842 |
case type_array_tag : {
|
|
|
1843 |
t = DEREF_type ( type_array_sub ( t ) ) ;
|
|
|
1844 |
depth++ ;
|
|
|
1845 |
break ;
|
|
|
1846 |
}
|
|
|
1847 |
case type_templ_tag : {
|
|
|
1848 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
1849 |
break ;
|
|
|
1850 |
}
|
|
|
1851 |
default : {
|
|
|
1852 |
/* Other types */
|
|
|
1853 |
return ;
|
|
|
1854 |
}
|
|
|
1855 |
}
|
|
|
1856 |
}
|
|
|
1857 |
return ;
|
|
|
1858 |
}
|
|
|
1859 |
|
|
|
1860 |
|
|
|
1861 |
/*
|
|
|
1862 |
DECLARE A FUNCTION TYPE
|
|
|
1863 |
|
|
|
1864 |
This routine checks the function or function typedef id of type t,
|
|
|
1865 |
including checking that if a default argument is given for a
|
|
|
1866 |
particular parameter one is also given for all subsequent parameters.
|
|
|
1867 |
The redeclaration case, where default arguments can be inherited
|
|
|
1868 |
from the previous declaration is dealt with by redecl_func_type.
|
|
|
1869 |
*/
|
|
|
1870 |
|
|
|
1871 |
void decl_func_type
|
|
|
1872 |
PROTO_N ( ( id, t, def ) )
|
|
|
1873 |
PROTO_T ( IDENTIFIER id X TYPE t X int def )
|
|
|
1874 |
{
|
|
|
1875 |
NAMESPACE pns ;
|
|
|
1876 |
int is_templ = 0 ;
|
|
|
1877 |
unsigned tag = TAG_id ( id ) ;
|
|
|
1878 |
|
|
|
1879 |
/* Step over template components */
|
|
|
1880 |
if ( IS_type_templ ( t ) ) {
|
|
|
1881 |
t = check_templ_params ( t, id ) ;
|
|
|
1882 |
is_templ = 1 ;
|
|
|
1883 |
}
|
|
|
1884 |
pns = DEREF_nspace ( type_func_pars ( t ) ) ;
|
|
|
1885 |
COPY_id ( nspace_name ( pns ), id ) ;
|
|
|
1886 |
|
|
|
1887 |
/* Check default arguments */
|
|
|
1888 |
IGNORE check_func_dargs ( t, 1, 0 ) ;
|
|
|
1889 |
|
|
|
1890 |
/* Check cv-qualifiers */
|
|
|
1891 |
switch ( tag ) {
|
|
|
1892 |
case id_function_tag :
|
|
|
1893 |
case id_mem_func_tag :
|
|
|
1894 |
case id_stat_mem_func_tag : {
|
|
|
1895 |
/* Allow for member functions */
|
|
|
1896 |
CLASS_TYPE ct = parent_class ( id ) ;
|
|
|
1897 |
member_func_type ( ct, tag, t ) ;
|
|
|
1898 |
|
|
|
1899 |
/* Allow for overloading of template functions */
|
|
|
1900 |
if ( is_templ ) {
|
|
|
1901 |
templ_func_decl ( id ) ;
|
|
|
1902 |
} else {
|
|
|
1903 |
IDENTIFIER over = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
1904 |
if ( !IS_NULL_id ( over ) ) {
|
|
|
1905 |
/* Overloads a template function */
|
|
|
1906 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( over ) ) ;
|
|
|
1907 |
if ( ds & dspec_template ) templ_func_decl ( id ) ;
|
|
|
1908 |
}
|
|
|
1909 |
}
|
|
|
1910 |
break ;
|
|
|
1911 |
}
|
|
|
1912 |
default : {
|
|
|
1913 |
/* Allow for function typedefs */
|
|
|
1914 |
member_func_type ( NULL_ctype, tag, t ) ;
|
|
|
1915 |
break ;
|
|
|
1916 |
}
|
|
|
1917 |
}
|
|
|
1918 |
UNUSED ( def ) ;
|
|
|
1919 |
return ;
|
|
|
1920 |
}
|
|
|
1921 |
|
|
|
1922 |
|
|
|
1923 |
/*
|
|
|
1924 |
REDECLARE DEFAULT ARGUMENTS
|
|
|
1925 |
|
|
|
1926 |
This routine checks and unifies the default arguments for the equal
|
|
|
1927 |
function types s and t. It returns the number of default arguments
|
|
|
1928 |
added by this unification.
|
|
|
1929 |
*/
|
|
|
1930 |
|
|
|
1931 |
static unsigned redecl_func_dargs
|
|
|
1932 |
PROTO_N ( ( s, t ) )
|
|
|
1933 |
PROTO_T ( TYPE s X TYPE t )
|
|
|
1934 |
{
|
|
|
1935 |
unsigned nargs = 0 ;
|
|
|
1936 |
if ( IS_type_func ( s ) && IS_type_func ( t ) ) {
|
|
|
1937 |
int started = 0 ;
|
|
|
1938 |
LIST ( IDENTIFIER ) ps = DEREF_list ( type_func_pids ( s ) ) ;
|
|
|
1939 |
LIST ( IDENTIFIER ) pt = DEREF_list ( type_func_pids ( t ) ) ;
|
|
|
1940 |
while ( !IS_NULL_list ( ps ) && !IS_NULL_list ( pt ) ) {
|
|
|
1941 |
ERROR err = NULL_err ;
|
|
|
1942 |
IDENTIFIER as = DEREF_id ( HEAD_list ( ps ) ) ;
|
|
|
1943 |
IDENTIFIER at = DEREF_id ( HEAD_list ( pt ) ) ;
|
|
|
1944 |
EXP ds = DEREF_exp ( id_parameter_init ( as ) ) ;
|
|
|
1945 |
EXP dt = DEREF_exp ( id_parameter_init ( at ) ) ;
|
|
|
1946 |
if ( IS_NULL_exp ( ds ) ) {
|
|
|
1947 |
/* No existing default argument */
|
|
|
1948 |
if ( IS_NULL_exp ( dt ) ) {
|
|
|
1949 |
if ( started ) {
|
|
|
1950 |
/* Missing default arguments */
|
|
|
1951 |
TYPE r = DEREF_type ( id_parameter_type ( at ) ) ;
|
|
|
1952 |
err = ERR_dcl_fct_default_missing ( at ) ;
|
|
|
1953 |
MAKE_exp_value ( r, dt ) ;
|
|
|
1954 |
COPY_exp ( id_parameter_init ( at ), dt ) ;
|
|
|
1955 |
COPY_exp ( id_parameter_init ( as ), dt ) ;
|
|
|
1956 |
}
|
|
|
1957 |
} else {
|
|
|
1958 |
/* New default argument */
|
|
|
1959 |
COPY_exp ( id_parameter_init ( as ), dt ) ;
|
|
|
1960 |
dt = DEREF_exp ( id_parameter_term ( at ) ) ;
|
|
|
1961 |
COPY_exp ( id_parameter_term ( as ), dt ) ;
|
|
|
1962 |
nargs++ ;
|
|
|
1963 |
started = 1 ;
|
|
|
1964 |
}
|
|
|
1965 |
} else {
|
|
|
1966 |
/* Existing default argument */
|
|
|
1967 |
if ( IS_NULL_exp ( dt ) ) {
|
|
|
1968 |
/* Inherited default argument */
|
|
|
1969 |
COPY_exp ( id_parameter_init ( at ), ds ) ;
|
|
|
1970 |
ds = DEREF_exp ( id_parameter_term ( as ) ) ;
|
|
|
1971 |
COPY_exp ( id_parameter_term ( at ), ds ) ;
|
|
|
1972 |
} else {
|
|
|
1973 |
/* Redefined default argument */
|
|
|
1974 |
PTR ( LOCATION ) sloc = id_loc ( as ) ;
|
|
|
1975 |
if ( eq_exp ( ds, dt, 0 ) ) {
|
|
|
1976 |
err = ERR_dcl_fct_default_dup ( at, sloc ) ;
|
|
|
1977 |
} else {
|
|
|
1978 |
/* NOT YET IMPLEMENTED: dt uncompiled */
|
|
|
1979 |
err = ERR_dcl_fct_default_redef ( at, sloc ) ;
|
|
|
1980 |
}
|
|
|
1981 |
COPY_exp ( id_parameter_init ( as ), dt ) ;
|
|
|
1982 |
dt = DEREF_exp ( id_parameter_term ( at ) ) ;
|
|
|
1983 |
COPY_exp ( id_parameter_term ( as ), dt ) ;
|
|
|
1984 |
}
|
|
|
1985 |
started = 1 ;
|
|
|
1986 |
}
|
|
|
1987 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
1988 |
/* Report any errors */
|
|
|
1989 |
LOCATION loc ;
|
|
|
1990 |
DEREF_loc ( id_loc ( at ), loc ) ;
|
|
|
1991 |
report ( loc, err ) ;
|
|
|
1992 |
}
|
|
|
1993 |
ps = TAIL_list ( ps ) ;
|
|
|
1994 |
pt = TAIL_list ( pt ) ;
|
|
|
1995 |
}
|
|
|
1996 |
}
|
|
|
1997 |
return ( nargs ) ;
|
|
|
1998 |
}
|
|
|
1999 |
|
|
|
2000 |
|
|
|
2001 |
/*
|
|
|
2002 |
REDECLARE A FUNCTION TYPE
|
|
|
2003 |
|
|
|
2004 |
This routine deals with the compatible redeclaration of the function
|
|
|
2005 |
id of type s to have type t. It unifies the parameter types, checking
|
|
|
2006 |
default arguments etc. It also checks any exception specifications
|
|
|
2007 |
for the two declarations. The parameter names in the returned type
|
|
|
2008 |
are those from t if def is true, and those from s otherwise.
|
|
|
2009 |
*/
|
|
|
2010 |
|
|
|
2011 |
TYPE redecl_func_type
|
|
|
2012 |
PROTO_N ( ( id, s, t, def, dargs ) )
|
|
|
2013 |
PROTO_T ( IDENTIFIER id X TYPE s X TYPE t X int def X int dargs )
|
|
|
2014 |
{
|
|
|
2015 |
TYPE fs = s ;
|
|
|
2016 |
TYPE ft = t ;
|
|
|
2017 |
CV_SPEC qs, qt ;
|
|
|
2018 |
NAMESPACE ns, nt ;
|
|
|
2019 |
unsigned tag = TAG_id ( id ) ;
|
|
|
2020 |
|
|
|
2021 |
/* Check template components */
|
|
|
2022 |
redecl_template ( &fs, &ft, id ) ;
|
|
|
2023 |
ns = DEREF_nspace ( type_func_pars ( fs ) ) ;
|
|
|
2024 |
nt = DEREF_nspace ( type_func_pars ( ft ) ) ;
|
|
|
2025 |
COPY_id ( nspace_name ( ns ), id ) ;
|
|
|
2026 |
COPY_id ( nspace_name ( nt ), id ) ;
|
|
|
2027 |
|
|
|
2028 |
#if LANGUAGE_C
|
|
|
2029 |
/* Copy composite type information */
|
|
|
2030 |
if ( def ) {
|
|
|
2031 |
TYPE ret = DEREF_type ( type_func_ret ( fs ) ) ;
|
|
|
2032 |
int ell = DEREF_int ( type_func_ellipsis ( fs ) ) ;
|
|
|
2033 |
LIST ( TYPE ) ptypes = DEREF_list ( type_func_ptypes ( fs ) ) ;
|
|
|
2034 |
COPY_list ( type_func_ptypes ( ft ), ptypes ) ;
|
|
|
2035 |
COPY_int ( type_func_ellipsis ( ft ), ell ) ;
|
|
|
2036 |
COPY_type ( type_func_ret ( ft ), ret ) ;
|
|
|
2037 |
}
|
|
|
2038 |
#endif
|
|
|
2039 |
|
|
|
2040 |
/* Check default arguments */
|
|
|
2041 |
if ( dargs && redecl_func_dargs ( fs, ft ) ) {
|
|
|
2042 |
if ( IS_type_templ ( t ) ) {
|
|
|
2043 |
report ( decl_loc, ERR_dcl_fct_default_templ () ) ;
|
|
|
2044 |
}
|
|
|
2045 |
}
|
|
|
2046 |
|
|
|
2047 |
/* Check exception specifications */
|
|
|
2048 |
if ( eq_except ( s, t ) != 2 ) {
|
|
|
2049 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
2050 |
report ( decl_loc, ERR_except_spec_wrong ( id, loc ) ) ;
|
|
|
2051 |
}
|
|
|
2052 |
|
|
|
2053 |
/* Check cv-qualifiers */
|
|
|
2054 |
switch ( tag ) {
|
|
|
2055 |
case id_mem_func_tag :
|
|
|
2056 |
case id_stat_mem_func_tag : {
|
|
|
2057 |
/* Allow for member functions */
|
|
|
2058 |
CLASS_TYPE ct = parent_class ( id ) ;
|
|
|
2059 |
member_func_type ( ct, tag, ft ) ;
|
|
|
2060 |
break ;
|
|
|
2061 |
}
|
|
|
2062 |
default : {
|
|
|
2063 |
/* Allow for function typedefs */
|
|
|
2064 |
member_func_type ( NULL_ctype, tag, ft ) ;
|
|
|
2065 |
break ;
|
|
|
2066 |
}
|
|
|
2067 |
}
|
|
|
2068 |
|
|
|
2069 |
/* Check function qualifiers */
|
|
|
2070 |
qs = DEREF_cv ( type_func_mqual ( fs ) ) ;
|
|
|
2071 |
qt = DEREF_cv ( type_func_mqual ( ft ) ) ;
|
|
|
2072 |
if ( qs != qt ) {
|
|
|
2073 |
qs &= cv_language ;
|
|
|
2074 |
qt &= cv_language ;
|
|
|
2075 |
if ( qs != qt ) {
|
|
|
2076 |
/* Language specifiers don't match */
|
|
|
2077 |
string ln = linkage_string ( dspec_none, qs ) ;
|
|
|
2078 |
report ( decl_loc, ERR_dcl_link_func ( ln ) ) ;
|
|
|
2079 |
}
|
|
|
2080 |
}
|
|
|
2081 |
|
|
|
2082 |
/* Select type to continue with */
|
|
|
2083 |
if ( def ) {
|
|
|
2084 |
LIST ( IDENTIFIER ) sids = DEREF_list ( type_func_pids ( fs ) ) ;
|
|
|
2085 |
LIST ( IDENTIFIER ) tids = DEREF_list ( type_func_pids ( ft ) ) ;
|
|
|
2086 |
if ( !EQ_list ( sids, tids ) ) {
|
|
|
2087 |
while ( !IS_NULL_list ( sids ) && !IS_NULL_list ( tids ) ) {
|
|
|
2088 |
/* Identify parameters */
|
|
|
2089 |
IDENTIFIER sid = DEREF_id ( HEAD_list ( sids ) ) ;
|
|
|
2090 |
IDENTIFIER tid = DEREF_id ( HEAD_list ( tids ) ) ;
|
|
|
2091 |
tid = chase_alias ( tid ) ;
|
|
|
2092 |
sid = chase_alias ( sid ) ;
|
|
|
2093 |
COPY_id ( id_alias ( sid ), tid ) ;
|
|
|
2094 |
tids = TAIL_list ( tids ) ;
|
|
|
2095 |
sids = TAIL_list ( sids ) ;
|
|
|
2096 |
}
|
|
|
2097 |
}
|
|
|
2098 |
if ( IS_type_templ ( t ) ) {
|
|
|
2099 |
/* Reset primary function template */
|
|
|
2100 |
reset_primary_templ ( s, t ) ;
|
|
|
2101 |
}
|
|
|
2102 |
s = t ;
|
|
|
2103 |
}
|
|
|
2104 |
return ( s ) ;
|
|
|
2105 |
}
|
|
|
2106 |
|
|
|
2107 |
|
|
|
2108 |
/*
|
|
|
2109 |
FIND THE FUNCTION COMPONENT OF A TYPE
|
|
|
2110 |
|
|
|
2111 |
This routine returns the function component of a function, pointer to
|
|
|
2112 |
function, or pointer to member function type.
|
|
|
2113 |
*/
|
|
|
2114 |
|
|
|
2115 |
TYPE find_func_type
|
|
|
2116 |
PROTO_N ( ( t ) )
|
|
|
2117 |
PROTO_T ( TYPE t )
|
|
|
2118 |
{
|
|
|
2119 |
if ( !IS_NULL_type ( t ) ) {
|
|
|
2120 |
unsigned tag = TAG_type ( t ) ;
|
|
|
2121 |
if ( tag == type_ref_tag ) {
|
|
|
2122 |
t = DEREF_type ( type_ref_sub ( t ) ) ;
|
|
|
2123 |
tag = TAG_type ( t ) ;
|
|
|
2124 |
}
|
|
|
2125 |
if ( tag == type_ptr_tag ) {
|
|
|
2126 |
t = DEREF_type ( type_ptr_sub ( t ) ) ;
|
|
|
2127 |
tag = TAG_type ( t ) ;
|
|
|
2128 |
} else if ( tag == type_ptr_mem_tag ) {
|
|
|
2129 |
t = DEREF_type ( type_ptr_mem_sub ( t ) ) ;
|
|
|
2130 |
tag = TAG_type ( t ) ;
|
|
|
2131 |
}
|
|
|
2132 |
if ( tag == type_func_tag ) return ( t ) ;
|
|
|
2133 |
}
|
|
|
2134 |
return ( NULL_type ) ;
|
|
|
2135 |
}
|
|
|
2136 |
|
|
|
2137 |
|
|
|
2138 |
/*
|
|
|
2139 |
STACK OF DECLARATOR LOCATIONS
|
|
|
2140 |
|
|
|
2141 |
The location decl_loc refers to the current declarator. This value
|
|
|
2142 |
needs to be stored during parameter declarations and this stack is
|
|
|
2143 |
used for this purpose.
|
|
|
2144 |
*/
|
|
|
2145 |
|
|
|
2146 |
static STACK ( LOCATION ) decl_locs = NULL_stack ( LOCATION ) ;
|
|
|
2147 |
|
|
|
2148 |
|
|
|
2149 |
/*
|
|
|
2150 |
BEGIN FUNCTION PARAMETER NAMESPACE
|
|
|
2151 |
|
|
|
2152 |
This routine is called at the start of a list of function parameters to
|
|
|
2153 |
initialise the parameter namespace. id gives the associated function
|
|
|
2154 |
name (or the null identifier).
|
|
|
2155 |
*/
|
|
|
2156 |
|
|
|
2157 |
void begin_param
|
|
|
2158 |
PROTO_N ( ( id ) )
|
|
|
2159 |
PROTO_T ( IDENTIFIER id )
|
|
|
2160 |
{
|
|
|
2161 |
NAMESPACE ns = make_namespace ( id, nspace_param_tag, 0 ) ;
|
|
|
2162 |
push_namespace ( ns ) ;
|
|
|
2163 |
PUSH_loc ( decl_loc, decl_locs ) ;
|
|
|
2164 |
return ;
|
|
|
2165 |
}
|
|
|
2166 |
|
|
|
2167 |
|
|
|
2168 |
/*
|
|
|
2169 |
END FUNCTION PARAMETER NAMESPACE
|
|
|
2170 |
|
|
|
2171 |
This routine is called at the end of a list of function parameters.
|
|
|
2172 |
*/
|
|
|
2173 |
|
|
|
2174 |
void end_param
|
|
|
2175 |
PROTO_Z ()
|
|
|
2176 |
{
|
|
|
2177 |
IGNORE pop_namespace () ;
|
|
|
2178 |
POP_loc ( decl_loc, decl_locs ) ;
|
|
|
2179 |
return ;
|
|
|
2180 |
}
|
|
|
2181 |
|
|
|
2182 |
|
|
|
2183 |
/*
|
|
|
2184 |
ADJUST A FUNCTION PARAMETER NAMESPACE
|
|
|
2185 |
|
|
|
2186 |
This routine adjusts the parameter namespace of the dfunction type
|
|
|
2187 |
t used in a function definition.
|
|
|
2188 |
*/
|
|
|
2189 |
|
|
|
2190 |
void adjust_param
|
|
|
2191 |
PROTO_N ( ( t ) )
|
|
|
2192 |
PROTO_T ( TYPE t )
|
|
|
2193 |
{
|
|
|
2194 |
NAMESPACE ns ;
|
|
|
2195 |
while ( IS_type_templ ( t ) ) {
|
|
|
2196 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
2197 |
}
|
|
|
2198 |
ns = DEREF_nspace ( type_func_pars ( t ) ) ;
|
|
|
2199 |
MODIFY_nspace_block_etc ( nspace_block_tag, ns ) ;
|
|
|
2200 |
report ( crt_loc, ERR_dcl_fct_typedef () ) ;
|
|
|
2201 |
return ;
|
|
|
2202 |
}
|
|
|
2203 |
|
|
|
2204 |
|
|
|
2205 |
/*
|
|
|
2206 |
READ A LIST OF NON-PROTOTYPE FUNCTION PARAMETERS
|
|
|
2207 |
|
|
|
2208 |
This routine reads a list of function parameters, returning true for
|
|
|
2209 |
a function definition.
|
|
|
2210 |
*/
|
|
|
2211 |
|
|
|
2212 |
int function_params
|
|
|
2213 |
PROTO_N ( ( t ) )
|
|
|
2214 |
PROTO_T ( TYPE t )
|
|
|
2215 |
{
|
|
|
2216 |
int def = 0 ;
|
|
|
2217 |
if ( IS_type_func ( t ) ) {
|
|
|
2218 |
int func = have_func_declarator ;
|
|
|
2219 |
int ell = DEREF_int ( type_func_ellipsis ( t ) ) ;
|
|
|
2220 |
NAMESPACE ns = DEREF_nspace ( type_func_pars ( t ) ) ;
|
|
|
2221 |
in_weak_param++ ;
|
|
|
2222 |
push_namespace ( ns ) ;
|
|
|
2223 |
while ( predict_dspec ( 0 ) ) {
|
|
|
2224 |
if ( !func ) {
|
|
|
2225 |
adjust_param ( t ) ;
|
|
|
2226 |
func = 1 ;
|
|
|
2227 |
}
|
|
|
2228 |
if ( ell != FUNC_NO_PARAMS && ell != FUNC_PARAMS ) {
|
|
|
2229 |
/* Can't have parameters with prototype */
|
|
|
2230 |
report ( crt_loc, ERR_dcl_fct_par_proto () ) ;
|
|
|
2231 |
ell = FUNC_PARAMS ;
|
|
|
2232 |
}
|
|
|
2233 |
parse_decl ( NULL_type, dspec_none ) ;
|
|
|
2234 |
def = 1 ;
|
|
|
2235 |
}
|
|
|
2236 |
if ( predict_func_defn () ) {
|
|
|
2237 |
if ( !func ) adjust_param ( t ) ;
|
|
|
2238 |
def = 1 ;
|
|
|
2239 |
}
|
|
|
2240 |
check_weak_func ( t, def ) ;
|
|
|
2241 |
IGNORE pop_namespace () ;
|
|
|
2242 |
in_weak_param-- ;
|
|
|
2243 |
}
|
|
|
2244 |
return ( def ) ;
|
|
|
2245 |
}
|
|
|
2246 |
|
|
|
2247 |
|
|
|
2248 |
/*
|
|
|
2249 |
MAIN FUNCTION
|
|
|
2250 |
|
|
|
2251 |
This variable is used to hold the main function.
|
|
|
2252 |
*/
|
|
|
2253 |
|
|
|
2254 |
IDENTIFIER main_function = NULL_id ;
|
|
|
2255 |
|
|
|
2256 |
|
|
|
2257 |
/*
|
|
|
2258 |
CHECK THE TYPE OF THE MAIN FUNCTION
|
|
|
2259 |
|
|
|
2260 |
This routine checks the type t of the main function nm. The return
|
|
|
2261 |
type must always be 'int', but the parameter types are implementation
|
|
|
2262 |
dependent. Basically, anything other than:
|
|
|
2263 |
|
|
|
2264 |
int main ( void ) ;
|
|
|
2265 |
int main ( int, char **, [extra parameters] ) ;
|
|
|
2266 |
|
|
|
2267 |
is deemed to be unorthodox.
|
|
|
2268 |
*/
|
|
|
2269 |
|
|
|
2270 |
TYPE check_main
|
|
|
2271 |
PROTO_N ( ( t, nm ) )
|
|
|
2272 |
PROTO_T ( TYPE t X HASHID nm )
|
|
|
2273 |
{
|
|
|
2274 |
int ok = 0 ;
|
|
|
2275 |
if ( IS_type_func ( t ) ) {
|
|
|
2276 |
TYPE r = DEREF_type ( type_func_ret ( t ) ) ;
|
|
|
2277 |
LIST ( TYPE ) p = DEREF_list ( type_func_ptypes ( t ) ) ;
|
|
|
2278 |
int ell = DEREF_int ( type_func_ellipsis ( t ) ) ;
|
|
|
2279 |
if ( !eq_type_unqual ( r, type_sint ) ) {
|
|
|
2280 |
/* Return type is wrong */
|
|
|
2281 |
ERROR err = ERR_basic_start_main_ret ( r, nm ) ;
|
|
|
2282 |
report ( crt_loc, err ) ;
|
|
|
2283 |
}
|
|
|
2284 |
if ( IS_NULL_list ( p ) ) {
|
|
|
2285 |
/* Check for no parameter case */
|
|
|
2286 |
if ( !( ell & FUNC_ELLIPSIS ) ) ok = 2 ;
|
|
|
2287 |
} else {
|
|
|
2288 |
/* Check for two parameter case */
|
|
|
2289 |
TYPE s = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
2290 |
if ( eq_type_unqual ( s, type_sint ) ) {
|
|
|
2291 |
p = TAIL_list ( p ) ;
|
|
|
2292 |
if ( !IS_NULL_list ( p ) ) {
|
|
|
2293 |
s = DEREF_type ( HEAD_list ( p ) ) ;
|
|
|
2294 |
if ( IS_type_ptr ( s ) ) {
|
|
|
2295 |
s = DEREF_type ( type_ptr_sub ( s ) ) ;
|
|
|
2296 |
if ( IS_type_ptr ( s ) ) {
|
|
|
2297 |
s = DEREF_type ( type_ptr_sub ( s ) ) ;
|
|
|
2298 |
if ( eq_type_unqual ( s, type_char ) ) {
|
|
|
2299 |
p = TAIL_list ( p ) ;
|
|
|
2300 |
if ( IS_NULL_list ( p ) ) {
|
|
|
2301 |
if ( !( ell & FUNC_ELLIPSIS ) ) {
|
|
|
2302 |
ok = 2 ;
|
|
|
2303 |
} else {
|
|
|
2304 |
ok = 1 ;
|
|
|
2305 |
}
|
|
|
2306 |
} else {
|
|
|
2307 |
ok = 1 ;
|
|
|
2308 |
}
|
|
|
2309 |
}
|
|
|
2310 |
}
|
|
|
2311 |
}
|
|
|
2312 |
}
|
|
|
2313 |
}
|
|
|
2314 |
}
|
|
|
2315 |
}
|
|
|
2316 |
if ( !ok ) {
|
|
|
2317 |
/* Warn about unorthodox parameter types */
|
|
|
2318 |
ERROR err = ERR_basic_start_main_proto ( t, nm ) ;
|
|
|
2319 |
report ( crt_loc, err ) ;
|
|
|
2320 |
}
|
|
|
2321 |
return ( t ) ;
|
|
|
2322 |
}
|
|
|
2323 |
|
|
|
2324 |
|
|
|
2325 |
/*
|
|
|
2326 |
RECHECK THE MAIN FUNCTION
|
|
|
2327 |
|
|
|
2328 |
This routine rechecks the main function id. In particular 'main' can't
|
|
|
2329 |
be overloaded.
|
|
|
2330 |
*/
|
|
|
2331 |
|
|
|
2332 |
void recheck_main
|
|
|
2333 |
PROTO_N ( ( id ) )
|
|
|
2334 |
PROTO_T ( IDENTIFIER id )
|
|
|
2335 |
{
|
|
|
2336 |
TYPE fn = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
2337 |
IDENTIFIER over = DEREF_id ( id_function_etc_over ( id ) ) ;
|
|
|
2338 |
if ( !IS_NULL_id ( over ) || IS_type_templ ( fn ) ) {
|
|
|
2339 |
/* Can't overload 'main' */
|
|
|
2340 |
report ( decl_loc, ERR_basic_start_main_over ( id ) ) ;
|
|
|
2341 |
}
|
|
|
2342 |
main_function = id ;
|
|
|
2343 |
return ;
|
|
|
2344 |
}
|
|
|
2345 |
|
|
|
2346 |
|
|
|
2347 |
/*
|
|
|
2348 |
CURRENT FUNCTION INFORMATION
|
|
|
2349 |
|
|
|
2350 |
These variables are used to hold information concerning the current
|
|
|
2351 |
function, including its name, return type and exception specification.
|
|
|
2352 |
*/
|
|
|
2353 |
|
|
|
2354 |
IDENTIFIER crt_func_id = NULL_id ;
|
|
|
2355 |
TYPE crt_func_return = NULL_type ;
|
|
|
2356 |
int crt_func_complex = 0 ;
|
|
|
2357 |
|
|
|
2358 |
|
|
|
2359 |
/*
|
|
|
2360 |
NESTED FUNCTION STACK
|
|
|
2361 |
|
|
|
2362 |
Note that it is indirectly possible to have nested function definitions
|
|
|
2363 |
(a function definition can include a class definition which can include
|
|
|
2364 |
a member function definition). These stacks are used to preserve
|
|
|
2365 |
information across nested functions.
|
|
|
2366 |
*/
|
|
|
2367 |
|
|
|
2368 |
static struct {
|
|
|
2369 |
STACK ( IDENTIFIER ) id ;
|
|
|
2370 |
STACK ( TYPE ) ret ;
|
|
|
2371 |
STACK ( int ) unreached ;
|
|
|
2372 |
STACK ( int ) declaration ;
|
|
|
2373 |
STACK ( int ) destructor ;
|
|
|
2374 |
STACK ( int ) handler ;
|
|
|
2375 |
STACK ( STACK ( EXP ) ) loops ;
|
|
|
2376 |
STACK ( NAMESPACE ) labels ;
|
|
|
2377 |
STACK ( LIST ( EXP ) ) solves ;
|
|
|
2378 |
STACK ( LIST ( EXP ) ) tries ;
|
|
|
2379 |
STACK ( unsigned long ) opts ;
|
|
|
2380 |
} func_stack = {
|
|
|
2381 |
NULL_stack ( IDENTIFIER ),
|
|
|
2382 |
NULL_stack ( TYPE ),
|
|
|
2383 |
NULL_stack ( int ),
|
|
|
2384 |
NULL_stack ( int ),
|
|
|
2385 |
NULL_stack ( int ),
|
|
|
2386 |
NULL_stack ( int ),
|
|
|
2387 |
NULL_stack ( STACK ( EXP ) ),
|
|
|
2388 |
NULL_stack ( NAMESPACE ),
|
|
|
2389 |
NULL_stack ( LIST ( EXP ) ),
|
|
|
2390 |
NULL_stack ( LIST ( EXP ) ),
|
|
|
2391 |
NULL_stack ( unsigned long )
|
|
|
2392 |
} ;
|
|
|
2393 |
|
|
|
2394 |
|
|
|
2395 |
/*
|
|
|
2396 |
BEGIN A FUNCTION DEFINITION
|
|
|
2397 |
|
|
|
2398 |
This routine is called at the start of a function definition. t gives
|
|
|
2399 |
the function type.
|
|
|
2400 |
*/
|
|
|
2401 |
|
|
|
2402 |
void begin_function
|
|
|
2403 |
PROTO_N ( ( id ) )
|
|
|
2404 |
PROTO_T ( IDENTIFIER id )
|
|
|
2405 |
{
|
|
|
2406 |
TYPE t ;
|
|
|
2407 |
int ell ;
|
|
|
2408 |
TYPE ret ;
|
|
|
2409 |
NAMESPACE ns ;
|
|
|
2410 |
NAMESPACE bns ;
|
|
|
2411 |
unsigned long n ;
|
|
|
2412 |
LIST ( TYPE ) ex ;
|
|
|
2413 |
ERROR err = NULL_err ;
|
|
|
2414 |
LIST ( IDENTIFIER ) p ;
|
|
|
2415 |
unsigned long npars = 0 ;
|
|
|
2416 |
|
|
|
2417 |
/* Check for previous definition */
|
|
|
2418 |
if ( IS_id_function_etc ( id ) ) {
|
|
|
2419 |
EXP e = DEREF_exp ( id_function_etc_defn ( id ) ) ;
|
|
|
2420 |
DECL_SPEC ds = DEREF_dspec ( id_storage ( id ) ) ;
|
|
|
2421 |
t = DEREF_type ( id_function_etc_type ( id ) ) ;
|
|
|
2422 |
if ( IS_NULL_exp ( e ) ) {
|
|
|
2423 |
/* Mark with dummy definition */
|
|
|
2424 |
MAKE_exp_value ( t, e ) ;
|
|
|
2425 |
COPY_exp ( id_function_etc_defn ( id ), e ) ;
|
|
|
2426 |
} else {
|
|
|
2427 |
/* Already defined */
|
|
|
2428 |
PTR ( LOCATION ) loc = id_loc ( id ) ;
|
|
|
2429 |
report ( decl_loc, ERR_basic_odr_def_func ( id, loc ) ) ;
|
|
|
2430 |
}
|
|
|
2431 |
if ( ( ds & dspec_inline ) && ( ds & dspec_called ) ) {
|
|
|
2432 |
report ( decl_loc, ERR_dcl_fct_spec_inline_call ( id ) ) ;
|
|
|
2433 |
}
|
|
|
2434 |
} else {
|
|
|
2435 |
t = type_func_void ;
|
|
|
2436 |
}
|
|
|
2437 |
COPY_loc ( id_loc ( id ), decl_loc ) ;
|
|
|
2438 |
stmt_loc = crt_loc ;
|
|
|
2439 |
|
|
|
2440 |
/* Decompose function type */
|
|
|
2441 |
while ( IS_type_templ ( t ) ) {
|
|
|
2442 |
t = DEREF_type ( type_templ_defn ( t ) ) ;
|
|
|
2443 |
}
|
|
|
2444 |
ell = DEREF_int ( type_func_ellipsis ( t ) ) ;
|
|
|
2445 |
p = DEREF_list ( type_func_pids ( t ) ) ;
|
|
|
2446 |
ex = DEREF_list ( type_func_except ( t ) ) ;
|
|
|
2447 |
ns = DEREF_nspace ( type_func_pars ( t ) ) ;
|
|
|
2448 |
if ( IS_NULL_nspace ( ns ) ) {
|
|
|
2449 |
ns = make_namespace ( id, nspace_param_tag, 0 ) ;
|
|
|
2450 |
}
|
|
|
2451 |
bns = ns ;
|
|
|
2452 |
|
|
|
2453 |
/* Check return type */
|
|
|
2454 |
ret = DEREF_type ( type_func_ret ( t ) ) ;
|
|
|
2455 |
ret = check_ret_type ( ret, &err, 1 ) ;
|
|
|
2456 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
2457 |
err = concat_error ( err, ERR_dcl_fct_ret () ) ;
|
|
|
2458 |
report ( decl_loc, err ) ;
|
|
|
2459 |
}
|
|
|
2460 |
|
|
|
2461 |
/* Save old function data */
|
|
|
2462 |
PUSH_id ( crt_func_id, func_stack.id ) ;
|
|
|
2463 |
PUSH_type ( crt_func_return, func_stack.ret ) ;
|
|
|
2464 |
PUSH_int ( unreached_code, func_stack.unreached ) ;
|
|
|
2465 |
PUSH_int ( in_declaration, func_stack.declaration ) ;
|
|
|
2466 |
PUSH_int ( have_destructor, func_stack.destructor ) ;
|
|
|
2467 |
PUSH_int ( in_func_handler, func_stack.handler ) ;
|
|
|
2468 |
PUSH_stack ( crt_loop_stack, func_stack.loops ) ;
|
|
|
2469 |
PUSH_nspace ( label_namespace, func_stack.labels ) ;
|
|
|
2470 |
PUSH_list ( all_solve_stmts, func_stack.solves ) ;
|
|
|
2471 |
PUSH_list ( all_try_blocks, func_stack.tries ) ;
|
|
|
2472 |
n = crt_option_value ( OPT_VAL_statement_depth ) ;
|
|
|
2473 |
PUSH_ulong ( n, func_stack.opts ) ;
|
|
|
2474 |
n = crt_option_value ( OPT_VAL_nested_class ) ;
|
|
|
2475 |
PUSH_ulong ( n, func_stack.opts ) ;
|
|
|
2476 |
n = number_errors ;
|
|
|
2477 |
PUSH_ulong ( n, func_stack.opts ) ;
|
|
|
2478 |
|
|
|
2479 |
/* Set up new function data */
|
|
|
2480 |
commentary ( id ) ;
|
|
|
2481 |
crt_func_id = id ;
|
|
|
2482 |
crt_func_return = ret ;
|
|
|
2483 |
crt_func_complex = pass_complex_type ( ret ) ;
|
|
|
2484 |
unreached_code = 0 ;
|
|
|
2485 |
unreached_last = 0 ;
|
|
|
2486 |
unreached_fall = 1 ;
|
|
|
2487 |
in_declaration = 0 ;
|
|
|
2488 |
have_destructor = 0 ;
|
|
|
2489 |
in_func_handler = 0 ;
|
|
|
2490 |
crt_loop_stack = NULL_stack ( EXP ) ;
|
|
|
2491 |
all_solve_stmts = NULL_list ( EXP ) ;
|
|
|
2492 |
all_try_blocks = NULL_list ( EXP ) ;
|
|
|
2493 |
crt_option_value ( OPT_VAL_statement_depth ) = 0 ;
|
|
|
2494 |
crt_option_value ( OPT_VAL_nested_class ) = 0 ;
|
|
|
2495 |
if ( option ( OPT_variable ) ) record_location++ ;
|
|
|
2496 |
label_namespace = make_namespace ( id, nspace_label_tag, 0 ) ;
|
|
|
2497 |
if ( do_dump ) dump_declare ( id, &decl_loc, 1 ) ;
|
|
|
2498 |
|
|
|
2499 |
/* Modify function parameter namespace */
|
|
|
2500 |
if ( IS_nspace_block ( bns ) ) bns = NULL_nspace ;
|
|
|
2501 |
MODIFY_nspace_block_etc ( nspace_block_tag, ns ) ;
|
|
|
2502 |
COPY_id ( nspace_name ( ns ), id ) ;
|
|
|
2503 |
|
|
|
2504 |
/* Check function parameters */
|
|
|
2505 |
crt_id_qualifier = qual_none ;
|
|
|
2506 |
while ( !IS_NULL_list ( p ) ) {
|
|
|
2507 |
IDENTIFIER par = DEREF_id ( HEAD_list ( p ) ) ;
|
|
|
2508 |
IDENTIFIER par2 = DEREF_id ( id_alias ( par ) ) ;
|
|
|
2509 |
HASHID pnm = DEREF_hashid ( id_name ( par ) ) ;
|
|
|
2510 |
TYPE pt = DEREF_type ( id_parameter_type ( par ) ) ;
|
|
|
2511 |
unsigned ptag = TAG_type ( pt ) ;
|
|
|
2512 |
if ( !EQ_id ( par2, par ) ) {
|
|
|
2513 |
/* Rename parameter if necessary */
|
|
|
2514 |
par2 = chase_alias ( par2 ) ;
|
|
|
2515 |
pnm = DEREF_hashid ( id_name ( par2 ) ) ;
|
|
|
2516 |
COPY_hashid ( id_name ( par ), pnm ) ;
|
|
|
2517 |
COPY_id ( id_alias ( par ), par2 ) ;
|
|
|
2518 |
}
|
|
|
2519 |
if ( do_local ) {
|
|
|
2520 |
LOCATION loc ;
|
|
|
2521 |
DEREF_loc ( id_loc ( par ), loc ) ;
|
|
|
2522 |
dump_declare ( par, &loc, 1 ) ;
|
|
|
2523 |
}
|
|
|
2524 |
if ( IS_hashid_anon ( pnm ) ) {
|
|
|
2525 |
/* Report anonymous parameters */
|
|
|
2526 |
LOCATION loc ;
|
|
|
2527 |
DEREF_loc ( id_loc ( par ), loc ) ;
|
|
|
2528 |
report ( loc, ERR_dcl_fct_par_anon () ) ;
|
|
|
2529 |
}
|
|
|
2530 |
switch ( ptag ) {
|
|
|
2531 |
case type_top_tag :
|
|
|
2532 |
case type_bottom_tag : {
|
|
|
2533 |
/* Void parameters have already been reported */
|
|
|
2534 |
break ;
|
|
|
2535 |
}
|
|
|
2536 |
case type_ref_tag : {
|
|
|
2537 |
/* References don't need checking */
|
|
|
2538 |
break ;
|
|
|
2539 |
}
|
|
|
2540 |
default : {
|
|
|
2541 |
/* Check for incomplete types */
|
|
|
2542 |
err = check_complete ( pt ) ;
|
|
|
2543 |
if ( !IS_NULL_err ( err ) ) {
|
|
|
2544 |
LOCATION loc ;
|
|
|
2545 |
ERROR err2 = ERR_basic_types_par_incompl ( par ) ;
|
|
|
2546 |
err = concat_error ( err, err2 ) ;
|
|
|
2547 |
DEREF_loc ( id_loc ( par ), loc ) ;
|
|
|
2548 |
report ( loc, err ) ;
|
|
|
2549 |
}
|
|
|
2550 |
break ;
|
|
|
2551 |
}
|
|
|
2552 |
}
|
|
|
2553 |
if ( option ( OPT_decl_hide ) ) check_hiding ( par ) ;
|
|
|
2554 |
npars++ ;
|
|
|
2555 |
p = TAIL_list ( p ) ;
|
|
|
2556 |
}
|
|
|
2557 |
|
|
|
2558 |
/* Declare parameters */
|
|
|
2559 |
push_namespace ( ns ) ;
|
|
|
2560 |
block_namespace = bns ;
|
|
|
2561 |
IGNORE check_value ( OPT_VAL_func_pars, npars ) ;
|
|
|
2562 |
|
|
|
2563 |
/* Deal with the this pointer */
|
|
|
2564 |
if ( IS_id_mem_func ( id ) ) {
|
|
|
2565 |
IGNORE make_this_decl ( id ) ;
|
|
|
2566 |
}
|
|
|
2567 |
|
|
|
2568 |
/* Deal with the ellipsis parameter */
|
|
|
2569 |
if ( ell & FUNC_ELLIPSIS ) make_ellipsis_decl () ;
|
|
|
2570 |
|
|
|
2571 |
/* Create dummy try block */
|
|
|
2572 |
start_try_check ( ex ) ;
|
|
|
2573 |
return ;
|
|
|
2574 |
}
|
|
|
2575 |
|
|
|
2576 |
|
|
|
2577 |
/*
|
|
|
2578 |
END A FUNCTION DEFINITION
|
|
|
2579 |
|
|
|
2580 |
This routine is called at the end of a function definition. The
|
|
|
2581 |
expression body gives the compound statement comprising the definition.
|
|
|
2582 |
Note that the parameters are in the outermost scope of body and so
|
|
|
2583 |
have already been taken out of scope.
|
|
|
2584 |
*/
|
|
|
2585 |
|
|
|
2586 |
EXP end_function
|
|
|
2587 |
PROTO_N ( ( id, body ) )
|
|
|
2588 |
PROTO_T ( IDENTIFIER id X EXP body )
|
|
|
2589 |
{
|
|
|
2590 |
/* Check for errors in function */
|
|
|
2591 |
TYPE ret ;
|
|
|
2592 |
int flow = 0 ;
|
|
|
2593 |
unsigned long n ;
|
|
|
2594 |
POP_ulong ( n, func_stack.opts ) ;
|
|
|
2595 |
if ( option ( OPT_variable ) ) {
|
|
|
2596 |
if ( n == number_errors ) flow = 1 ;
|
|
|
2597 |
record_location-- ;
|
|
|
2598 |
}
|
|
|
2599 |
|
|
|
2600 |
/* Check function body */
|
|
|
2601 |
if ( !IS_NULL_exp ( body ) ) {
|
|
|
2602 |
if ( !unreached_code ) {
|
|
|
2603 |
/* Check for falling out of function */
|
|
|
2604 |
EXP e = fall_return_stmt () ;
|
|
|
2605 |
body = add_compound_stmt ( body, e ) ;
|
|
|
2606 |
}
|
|
|
2607 |
unreached_code = 0 ;
|
|
|
2608 |
set_parent_stmt ( body, NULL_exp ) ;
|
|
|
2609 |
if ( IS_exp_solve_stmt ( body ) ) {
|
|
|
2610 |
/* Analyse enclosing solve statement */
|
|
|
2611 |
body = solve_labels ( body ) ;
|
|
|
2612 |
} else if ( check_labels () ) {
|
|
|
2613 |
/* Construct enclosing solve statement */
|
|
|
2614 |
EXP a ;
|
|
|
2615 |
MAKE_exp_solve_stmt ( type_void, body, a ) ;
|
|
|
2616 |
CONS_exp ( a, all_solve_stmts, all_solve_stmts ) ;
|
|
|
2617 |
set_parent_stmt ( body, a ) ;
|
|
|
2618 |
body = solve_labels ( a ) ;
|
|
|
2619 |
}
|
|
|
2620 |
end_solve_stmts () ;
|
|
|
2621 |
#if LANGUAGE_CPP
|
|
|
2622 |
if ( !IS_NULL_list ( all_try_blocks ) ) {
|
|
|
2623 |
/* Check all try blocks */
|
|
|
2624 |
end_try_blocks ( id ) ;
|
|
|
2625 |
}
|
|
|
2626 |
#endif
|
|
|
2627 |
body = end_try_check ( id, body ) ;
|
|
|
2628 |
if ( flow || ( have_destructor && do_usage ) ) {
|
|
|
2629 |
/* Variable flow analysis */
|
|
|
2630 |
check_flow ( id, body, flow ) ;
|
|
|
2631 |
}
|
|
|
2632 |
}
|
|
|
2633 |
|
|
|
2634 |
/* Define the function */
|
|
|
2635 |
if ( IS_id_function_etc ( id ) ) {
|
|
|
2636 |
COPY_exp ( id_function_etc_defn ( id ), body ) ;
|
|
|
2637 |
define_id ( id ) ;
|
|
|
2638 |
if ( !in_template_decl ) {
|
|
|
2639 |
compile_function ( id, 0 ) ;
|
|
|
2640 |
free_nspace ( label_namespace ) ;
|
|
|
2641 |
}
|
|
|
2642 |
if ( do_dump ) dump_undefine ( id, &crt_loc, 0 ) ;
|
|
|
2643 |
}
|
|
|
2644 |
|
|
|
2645 |
/* Restore old function data */
|
|
|
2646 |
POP_id ( crt_func_id, func_stack.id ) ;
|
|
|
2647 |
POP_type ( ret, func_stack.ret ) ;
|
|
|
2648 |
POP_int ( unreached_code, func_stack.unreached ) ;
|
|
|
2649 |
POP_int ( in_declaration, func_stack.declaration ) ;
|
|
|
2650 |
POP_int ( have_destructor, func_stack.destructor ) ;
|
|
|
2651 |
POP_int ( in_func_handler, func_stack.handler ) ;
|
|
|
2652 |
POP_stack ( crt_loop_stack, func_stack.loops ) ;
|
|
|
2653 |
POP_nspace ( label_namespace, func_stack.labels ) ;
|
|
|
2654 |
POP_list ( all_solve_stmts, func_stack.solves ) ;
|
|
|
2655 |
POP_list ( all_try_blocks, func_stack.tries ) ;
|
|
|
2656 |
POP_ulong ( n, func_stack.opts ) ;
|
|
|
2657 |
crt_option_value ( OPT_VAL_nested_class ) = n ;
|
|
|
2658 |
POP_ulong ( n, func_stack.opts ) ;
|
|
|
2659 |
crt_option_value ( OPT_VAL_statement_depth ) = n ;
|
|
|
2660 |
crt_func_complex = pass_complex_type ( ret ) ;
|
|
|
2661 |
crt_func_return = ret ;
|
|
|
2662 |
block_namespace = NULL_nspace ;
|
|
|
2663 |
suppress_variable = 0 ;
|
|
|
2664 |
unreached_last = 0 ;
|
|
|
2665 |
return ( body ) ;
|
|
|
2666 |
}
|