示例#1
0
TYPE UdcFindType                // FIND TARGET TYPE FOR UDCF
    ( TYPE src                  // - source class or reference to it
    , TYPE tgt )                // - target type
{
    TYPE result;                // - result type
    FNOV_COARSE_RANK rank;      // - UDC RANKING
    bool is_ctor;               // - true ==> ctor udc, false ==> udcf udc
    FNOV_LIST* fnov_list;       // - matches list
    FNOV_DIAG diag;             // - lookup diagnosis

    if( NULL == ClassTypeForType( src ) ) {
        result = NULL;
    } else {
        rank = UdcLocate( FNOV_UDC_COPY
                        , src
                        , tgt
                        , NULL
                        , &is_ctor
                        , &fnov_list
                        , &diag );
        if( rank == OV_RANK_UD_CONV ) {
            result = SymFuncReturnType( fnov_list->sym );
        } else {
            result = NULL;
        }
        FnovListFree( &fnov_list );
        FnovFreeDiag( &diag );
    }
    return result;
}
示例#2
0
PTREE AnalyseCall(              // ANALYSIS FOR CALL
    PTREE expr,                 // - call expression
    CALL_DIAG *diagnostic )     // - diagnostics used for function problems
{
    PTREE *r_args;              // - reference( arguments )
    PTREE *r_func;              // - reference( function )
    PTREE *ptlist;              // - nodes for arguments
    PTREE left;                 // - left operand ( the function )
    PTREE right;                // - right operand ( the arguments )
    PTREE this_node;            // - node for "this" computation
    PTREE deref_args;           // - member pointer dereference args
    PTREE last_arg;             // - last argument
    PTREE static_fn_this;       // - "this" for a static member
    PTREE templ_args;           // - explicit template arguments
    SYMBOL sym;                 // - function symbol
    SYMBOL caller_sym;          // - function that is doing the call
    TYPE type;                  // - temporary type
    TYPE fn_type;               // - function type
    type_flag fn_mod;           // - function modifier flags
    unsigned count;             // - # args, caller
    arg_list *alist;            // - arg_list for caller
    intrinsic_mapping *intr_map;// - mapping for intrinsic function
    SEARCH_RESULT *result;      // - searching result
    boolean membptr_deref;      // - TRUE ==> member pointer dereference
    boolean has_ellipsis;       // - TRUE ==> ellipsis in argument list
    boolean virtual_call;       // - TRUE ==> virtual call
    TEMP_PT_LIST default_list;  // - default PTREE list
    TEMP_ARG_LIST default_args; // - default arg_list
    FNOV_DIAG fnov_diag;        // - diagnosis information;

    r_args = PTreeRefRight( expr );
    last_arg = *r_args;
    right = NodeReverseArgs( &count, last_arg );
    *r_args = right;
    r_func = PTreeRefLeft( expr );
    left = *r_func;
    membptr_deref = FALSE;
    this_node = NULL;
    intr_map = NULL;
    static_fn_this = NULL;
    virtual_call = FALSE;
    switch( left->cgop ) {
      case CO_DOT:
      case CO_ARROW:
        this_node = left->u.subtree[0];
        left->u.subtree[0] = NULL;
        left = NodePruneTop( left );
        *r_func = left;
        r_func = PTreeRefLeft( expr );
        left = *r_func;
        if( ( left->op == PT_ID ) && ( left->cgop == CO_NAME_DTOR ) ) {
            /* dtor of a non-class type */
            left = NodePruneTop( *r_func );
            /* NYI: verify dtor call has no arguments */
            expr->u.subtree[0] = NULL;
            NodeFreeDupedExpr( expr );
            expr = NodeConvert( GetBasicType( TYP_VOID ), this_node );
            expr = NodeComma( expr, left );
            return( expr );
        }
        break;
      case CO_CALL_EXEC_IND:
        if( left->flags & PTF_CALLED_ONLY ) {
            /* member pointer dereference being called */
            deref_args = left->u.subtree[1];
            this_node = NodeDupExpr( &(deref_args->u.subtree[1]) );
            membptr_deref = TRUE;
        }
        break;
    }
    alist = ArgListTempAlloc( &default_args, count );
    ptlist = PtListAlloc( default_list, count );
    NodeBuildArgList( alist, ptlist, right, count );
    if( this_node == NULL ) {
        alist->qualifier = FunctionThisQualifier();
    } else {
        alist->qualifier = BaseTypeClassFlags( NodeType( this_node ) );
    }

    if( NodeIsBinaryOp( left, CO_TEMPLATE ) ) {
        DbgAssert( left->u.subtree[0]->op == PT_SYMBOL );

        templ_args = left->u.subtree[1];

        left->u.subtree[1] = NULL;
        left = NodePruneTop( left );
        *r_func = left;
        r_func = PTreeRefLeft( expr );
        left = *r_func;
    } else {
        templ_args = NULL;
    }

    if( left->op == PT_SYMBOL ) {
        FNOV_RESULT ovret;
        SYMBOL orig;        // - original symbol
        sym = left->u.symcg.symbol;
        orig = sym;
        if( left->cgop == CO_NAME_CONVERT ) {
            ovret = UdcOverloadedDiag( &sym
                                 , left->u.symcg.result
                                 , sym
                                 , SymFuncReturnType( sym )
                                 , alist->qualifier
                                 , &fnov_diag );
        } else {
            ovret = FuncOverloadedDiag( &sym
                                   , left->u.symcg.result
                                   , sym
                                   , alist
                                   , ptlist
                                   , templ_args
                                   , &fnov_diag );
        }

        switch( ovret ) {
          case FNOV_AMBIGUOUS :
            CallDiagAmbiguous( expr, diagnostic->msg_ambiguous, &fnov_diag );
            NodeFreeDupedExpr( this_node );
            ArgListTempFree( alist, count );
            PtListFree( ptlist, count );
            return( expr );
          case FNOV_NO_MATCH :
            if( this_node == NULL ) {
                if( SymIsThisFuncMember( orig ) ) {
                    this_node = NodeThisCopyLocation( left );
                }
            }
            if( this_node != NULL ) {
                if( ( ! SymIsCtor( orig ) )
                  &&( ! SymIsDtor( orig ) )
                  &&( CNV_OK != AnalysePtrCV
                                ( this_node
                                , TypeThisSymbol( orig
                                                , this_node->flags & PTF_LVALUE )
                                , NodeType( this_node )
                                , CNV_FUNC_THIS ) ) ) {
                    PTreeErrorNode( expr );
                    InfSymbolDeclaration( orig );
                    NodeFreeDupedExpr( this_node );
                    ArgListTempFree( alist, count );
                    PtListFree( ptlist, count );
                    return( expr );
                }
            }
            CallDiagNoMatch( expr
                           , diagnostic->msg_no_match_one
                           , diagnostic->msg_no_match_many
                           , this_node
                           , orig
                           , &fnov_diag );
            NodeFreeDupedExpr( this_node );
            ArgListTempFree( alist, count );
            PtListFree( ptlist, count );
            return( expr );
        }
        FnovFreeDiag( &fnov_diag );
        left->u.symcg.symbol = sym;
        result = left->u.symcg.result;
        if( this_node == NULL ) {
            if( SymIsThisFuncMember( sym ) ) {
                if( result->use_this ) {
                    this_node = NodeThisCopyLocation( left );
                    if( this_node == NULL ) {
                        PTreeErrorExpr( expr, ERR_INVALID_NONSTATIC_ACCESS );
                        InfSymbolDeclaration( sym );
                        ArgListTempFree( alist, count );
                        PtListFree( ptlist, count );
                        return( expr );
                    }
                } else {
                    PTreeErrorExpr( expr, ERR_BARE_FUNCTION_ACCESS );
                    InfSymbolDeclaration( sym );
                    ArgListTempFree( alist, count );
                    PtListFree( ptlist, count );
                    return( expr );
                }
            }
        }
        if( ! AnalyseSymbolAccess( expr, left, this_node, &diagAccess ) ) {
            NodeFreeDupedExpr( this_node );
            ArgListTempFree( alist, count );
            PtListFree( ptlist, count );
            return( expr );
        }
        type = sym->sym_type;
        fn_type = TypeGetActualFlags( type, &fn_mod );
        if( fn_type->flag & TF1_INTRINSIC ) {
            intr_map = intrinsicMapping( sym );
            if( intr_map == NULL ) {
                outputCallTriggeredWarning( expr, sym );
            }
        }
        if( fn_mod & TF1_FAR16 ) {
            /* we are calling a far16 function */
            caller_sym = ScopeFunctionInProgress();
            caller_sym->flag |= SF_FAR16_CALLER;
        }
        left->type = type;
        if( this_node == NULL ) {
            if( SymIsThisFuncMember( sym ) ) {
                this_node = NodeThisCopyLocation( left );
            }
        } else {
            if( SymIsStaticFuncMember( sym ) ) {
                #ifdef OLD_STATIC_MEMBER_ACCESS
                    NodeFreeDupedExpr( this_node );
                #else
                    static_fn_this = this_node;
                #endif
                this_node = NULL;
            }
        }
        if( this_node != NULL ) {
            TYPE pted;
            pted = TypePointedAtModified( this_node->type );
            if( pted == NULL ) {
                pted = this_node->type;
            }
            if( TypeTruncByMemModel( pted ) ) {
                if( SymIsCtor( sym ) ) {
                    PTreeErrorExpr( this_node, ERR_CTOR_OBJ_MEM_MODEL );
                } else if( SymIsDtor( sym ) ) {
                    PTreeErrorExpr( this_node, ERR_DTOR_OBJ_MEM_MODEL );
                } else {
                    PTreeErrorExpr( this_node, ERR_THIS_OBJ_MEM_MODEL );
                }
                InfSymbolDeclaration( sym );
                PTreeErrorNode( expr );
                NodeFreeDupedExpr( this_node );
                ArgListTempFree( alist, count );
                PtListFree( ptlist, count );
                NodeFreeDupedExpr( static_fn_this );
                return( expr );
            }
            if( adjustForVirtualCall( &this_node, r_func, result ) ) {
                virtual_call = TRUE;
                expr->cgop = CO_CALL_EXEC_IND;
                left = VfunSetupCall( expr->u.subtree[0] );
                left = VfnDecorateCall( left, sym );
            } else {
                expr->cgop = CO_CALL_EXEC;
                left = NodeUnaryCopy( CO_CALL_SETUP, expr->u.subtree[0] );
                SymMarkRefed( sym );
            }
        } else {
            NodeFreeSearchResult( left );
            expr->cgop = CO_CALL_EXEC;
            left = NodeUnaryCopy( CO_CALL_SETUP, expr->u.subtree[0] );
            SymMarkRefed( sym );
        }
    } else {
        if( ! membptr_deref ) {
            /* i.e, p->foo() where foo is a pointer to a function */
            NodeFreeDupedExpr( this_node );
            this_node = NULL;
        }
        sym = NULL;
        left = expr->u.subtree[0];
        type = TypedefModifierRemove( left->type );
        if( type->id == TYP_POINTER ) {
            type = type->of;
        }
        fn_type = TypeGetActualFlags( type, &fn_mod );
        if( fn_mod & TF1_FAR16 ) {
            /* we are calling a far16 function */
            caller_sym = ScopeFunctionInProgress();
            caller_sym->flag |= SF_FAR16_CALLER;
        }
        if( ! TypeHasNumArgs( type, count ) ) {
            PTreeErrorExpr( expr, ERR_PARM_COUNT_MISMATCH_POINTER );
            CErr2p( INF_FUNCTION_TYPE, type );
            ArgListTempFree( alist, count );
            PtListFree( ptlist, count );
            NodeFreeDupedExpr( static_fn_this );
            return( expr );
        }
        expr->cgop = CO_CALL_EXEC_IND;
        left = VfunSetupCall( left );
    }
    expr->u.subtree[0] = left;
#if _CPU == _AXP
    if( intr_map != NULL && intr_map->cgop == CO_VASTART ) {
        expr = convertVaStart( expr, alist, type );
    } else {
        expr = NodeConvertCallArgList( expr, count, type, &expr->u.subtree[1] );
    }
#else
    expr = NodeConvertCallArgList( expr, count, type, &expr->u.subtree[1] );
#endif
    if( expr->op != PT_ERROR ) {
        TYPE ftype;             // - function type
        PTREE cdtor;            // - CDTOR node
        PTREE callnode;         // - call node
        PTREE retnnode;         // - return node (for struct return)
        callnode = expr;
        if( this_node == NULL ) {
            cdtor = NULL;
        } else {
            this_node = NodeArg( this_node );
            if( virtual_call ) {
                this_node->flags |= PTF_ARG_THIS_VFUN;
            }
            if( sym != NULL && SymIsDtor( sym ) ) {
                cdtor = NodeArg( NodeCDtorArg( DTOR_NULL ) );
            } else {
                cdtor = NULL;
            }
        }
        ftype = type;
        type = TypedefModifierRemove( type );
        has_ellipsis = TypeHasEllipsisArg( type );
        type = type->of;
        {
            TYPE tgt = TypeReference( type );
            if( tgt == NULL ) {
                expr->type = type;
            } else {
                expr->type = tgt;
                expr->flags |= PTF_LVALUE;
            }
        }
        if( sym != NULL ) {
            if( ! AddDefaultArgs( sym, expr ) ) {
                NodeFreeDupedExpr( cdtor );
                NodeFreeDupedExpr( this_node );
                ArgListTempFree( alist, count );
                PtListFree( ptlist, count );
                return expr;
            }
        }
        if( NULL != TypeReference( type ) ) {
            expr->flags |= PTF_LVALUE;
        }
        if( OMR_CLASS_REF == ObjModelArgument( type ) ) {
            retnnode = NodeTemporary( type );
            retnnode = PTreeCopySrcLocation( retnnode, expr );
        } else {
            retnnode = NULL;
        }
        expr = CallArgsArrange( ftype
                              , callnode
                              , callnode->u.subtree[1]
                              , this_node
                              , cdtor
                              , retnnode );
        if( retnnode != NULL ) {
            expr = NodeDtorExpr( expr, retnnode->u.symcg.symbol );
            if( SymRequiresDtoring( retnnode->u.symcg.symbol ) ) {
                expr = PtdCtoredExprType( expr, NULL, type );
            }
        }
        type = StructType( type );
        if( type != NULL && ! TypeDefined( type ) ) {
            PTreeErrorExpr( expr, ERR_RETURN_UNDEFD_TYPE );
        }
        if( intr_map != NULL && expr->op != PT_ERROR ) {
#if _CPU == _AXP
            if( intr_map->cgop == CO_VASTART ) {
                expr = transformVaStart( expr );
            } else {
                expr = PTreeIntrinsicOperator( expr, intr_map->cgop );
            }
#else
            expr = PTreeIntrinsicOperator( expr, intr_map->cgop );
#endif
            expr->flags |= PTF_MEANINGFUL | PTF_SIDE_EFF;
        }
    }
    if( static_fn_this != NULL ) {
        expr = NodeCommaIfSideEffect( static_fn_this, expr );
    }
    ArgListTempFree( alist, count );
    PtListFree( ptlist, count );
    return expr;
}