Changeset 4864a73 for src/AST/Node.hpp


Ignore:
Timestamp:
Jun 5, 2019, 4:28:28 PM (3 years ago)
Author:
Thierry Delisle <tdelisle@…>
Branches:
arm-eh, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr
Children:
0ce063b
Parents:
2a8f0c1
Message:

Added chain mutation and example use in resolver

File:
1 edited

Legend:

Unmodified
Added
Removed
  • src/AST/Node.hpp

    r2a8f0c1 r4864a73  
    4646        };
    4747
     48        bool unique() const { return strong_count == 1; }
     49
    4850private:
    4951        /// Make a copy of this node; should be overridden in subclass with more precise return type
     
    5658        mutable size_t strong_count = 0;
    5759        mutable size_t weak_count = 0;
     60        mutable bool was_ever_strong = false;
    5861
    5962        void increment(ref_type ref) const {
    6063                switch (ref) {
    61                         case ref_type::strong: strong_count++; break;
     64                        case ref_type::strong: strong_count++; was_ever_strong = true; break;
    6265                        case ref_type::weak  : weak_count  ++; break;
    6366                }
     
    176179        }
    177180
    178         const node_t * get() const { return  node; }
    179         const node_t * operator->() const { return  node; }
    180         const node_t & operator* () const { return *node; }
    181         explicit operator bool() const { return node; }
    182         operator const node_t * () const { return node; }
     181        const node_t * get() const { _check(); return  node; }
     182        const node_t * operator->() const { _check(); return  node; }
     183        const node_t & operator* () const { _check(); return *node; }
     184        explicit operator bool() const { _check(); return node; }
     185        operator const node_t * () const { _check(); return node; }
    183186
    184187        /// wrapper for convenient access to dynamic_cast
    185188        template<typename o_node_t>
    186         const o_node_t * as() const { return dynamic_cast<const o_node_t *>(node); }
     189        const o_node_t * as() const { _check(); return dynamic_cast<const o_node_t *>(node); }
    187190
    188191        /// wrapper for convenient access to strict_dynamic_cast
     
    208211        void _inc( const node_t * other );
    209212        void _dec( const node_t * other );
     213        void _check() const;
    210214
    211215protected:
Note: See TracChangeset for help on using the changeset viewer.